/* ============== Variables ============== */
:root {
    --primary-color: #27ae60;
    --primary-dark: #1e8449;
    --secondary-color: #3498db;
    --text-color: #2c3e50;
    --text-light: #7f8c8d;
    --bg-color: #f8f9fa;
    --white: #ffffff;
    --border-color: #e0e0e0;
    --shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.15);
    --radius: 12px;
    --radius-sm: 8px;
    --transition: all 0.3s ease;
}

/* ============== Reset & Base ============== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    color: var(--text-color);
    background-color: var(--bg-color);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

a {
    text-decoration: none;
    color: inherit;
}

button {
    cursor: pointer;
    border: none;
    background: none;
    font-family: inherit;
}

/* ============== Layout ============== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.main {
    flex: 1;
}

/* ============== Header ============== */
.header {
    background: var(--white);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.logo i {
    font-size: 1.8rem;
}

.nav {
    display: flex;
    gap: 20px;
}

.nav-link {
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    color: var(--text-color);
    font-weight: 500;
}

.nav-link:hover {
    background: var(--bg-color);
    color: var(--primary-color);
}

/* ============== Footer ============== */
.footer {
    background: var(--white);
    padding: 30px 0;
    text-align: center;
    border-top: 1px solid var(--border-color);
    margin-top: 60px;
}

.footer p {
    color: var(--text-light);
}

.footer-note {
    font-size: 0.875rem;
    margin-top: 8px;
}

/* ============== Landing Tool Explorer ============== */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.landing-hero {
    padding: 56px 0 20px;
    background: #f6f8f7;
}

.landing-hero-inner {
    max-width: 860px;
    text-align: center;
}

.landing-hero h1 {
    font-size: clamp(2rem, 3vw, 2.7rem);
    line-height: 1.15;
    letter-spacing: -0.02em;
    margin-bottom: 12px;
    display: inline-block;
    color: #fff;
    background: linear-gradient(135deg, #27ae60 0%, #1e8449 100%);
    border-radius: 14px;
    padding: 12px 22px;
    box-shadow: 0 10px 22px rgba(30, 132, 73, 0.18);
}

.landing-hero-subtitle {
    color: #5d6a63;
    font-size: 1.04rem;
    margin: 0 auto;
    max-width: 640px;
}

.landing-search-wrap {
    margin: 28px auto 0;
    max-width: 620px;
    display: flex;
    align-items: center;
    gap: 10px;
    background: #fff;
    border: 1px solid #dce5df;
    border-radius: 999px;
    padding: 12px 18px;
    box-shadow: 0 6px 20px rgba(16, 24, 40, 0.06);
}

.landing-search-wrap i {
    color: #6a7b71;
    font-size: 0.95rem;
}

.landing-search-wrap input {
    width: 100%;
    border: 0;
    outline: 0;
    background: transparent;
    color: var(--text-color);
    font-size: 1rem;
}

.landing-search-wrap input::placeholder {
    color: #809187;
}

.tools-explorer-section {
    padding: 14px 0 56px;
}

.tools-tabs-wrap {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    margin: 0 auto 28px;
    overflow-x: auto;
    padding: 6px;
    scrollbar-width: thin;
}

.tool-tab {
    border: 1px solid #d9e3dd;
    border-radius: 999px;
    background: #fff;
    color: #4f6055;
    padding: 8px 18px;
    font-size: 0.92rem;
    font-weight: 600;
    transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
    white-space: nowrap;
    box-shadow: 0 1px 0 rgba(16, 24, 40, 0.04);
}

.tool-tab:hover {
    border-color: #27ae60;
    color: #1e8449;
}

.tool-tab.is-active {
    background: #27ae60;
    border-color: #27ae60;
    color: #fff;
}

.tool-tab:focus-visible {
    outline: 3px solid rgba(39, 174, 96, 0.25);
    outline-offset: 1px;
}

.tools-panel {
    position: relative;
}

.tool-group {
    margin-top: 12px;
}

.tool-group + .tool-group {
    margin-top: 34px;
}

.tool-group-title {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    font-size: 0.84rem;
    letter-spacing: 0.1em;
    color: #2f4a3c;
    text-transform: uppercase;
    font-weight: 800;
    margin: 0 0 14px;
    padding: 6px 12px;
    border-radius: 999px;
    border: 1px solid #c8dfd1;
    background: linear-gradient(135deg, #eef8f2 0%, #e3f2e8 100%);
}

.tool-group-title::before {
    content: '';
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: #27ae60;
    box-shadow: 0 0 0 3px rgba(39, 174, 96, 0.18);
}

.tool-explorer-grid,
.tools-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
}

.tool-card {
    background: #fff;
    border: 1px solid #e2eae5;
    border-radius: 16px;
    padding: 18px;
    box-shadow: 0 3px 14px rgba(16, 24, 40, 0.05);
    transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    min-height: 160px;
}

.tool-explorer-card:hover {
    transform: translateY(-3px);
    border-color: #27ae60;
    box-shadow: 0 10px 22px rgba(16, 24, 40, 0.09);
}

.tool-explorer-card.is-disabled:hover {
    transform: none;
    border-color: #e7ece9;
    box-shadow: 0 3px 14px rgba(16, 24, 40, 0.05);
}

.tool-icon-shell {
    width: auto;
    height: auto;
    border-radius: 0;
    background: transparent;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 14px;
}

.tool-icon {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--tool-color, #27ae60);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
}

.tool-icon.dual-icon {
    background: linear-gradient(135deg, var(--tool-color) 50%, var(--tool-color2) 50%);
}

.tool-icon.dual-icon.dual-icon-vertical {
    background: linear-gradient(90deg, var(--tool-color) 50%, var(--tool-color2) 50%);
}

.tool-name {
    font-size: 1.02rem;
    line-height: 1.3;
    font-weight: 650;
    margin-bottom: 5px;
    color: #26342d;
}

.tool-description {
    font-size: 0.9rem;
    color: #718278;
    white-space: normal;
    line-height: 1.35;
    overflow-wrap: anywhere;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: clip;
}

.tool-status-badge {
    margin-top: 10px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 3px 10px;
    border-radius: 999px;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.03em;
    text-transform: uppercase;
    background: #fff3e0;
    color: #ef6c00;
    border: 1px solid #ffd8a8;
}

.tool-explorer-card.is-disabled {
    opacity: 0.7;
    border-color: #e7ece9;
    background: #fbfcfb;
}

.tool-explorer-card.is-disabled .tool-icon-shell {
    background: transparent;
}

.tool-explorer-card.is-disabled .tool-icon {
    filter: grayscale(45%);
}

.tools-empty-state {
    border: 1px dashed #cad7cf;
    border-radius: 14px;
    background: #f9fbfa;
    text-align: center;
    padding: 32px 20px;
}

.tools-empty-state h3 {
    font-size: 1.08rem;
    margin-bottom: 6px;
}

.tools-empty-state p {
    color: #728379;
}

.tools-panel.panel-animating {
    animation: toolPanelFadeSlide 0.22s ease;
}

@keyframes toolPanelFadeSlide {
    from {
        opacity: 0;
        transform: translateY(8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@media (max-width: 1180px) {
    .tool-explorer-grid,
    .tools-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

@media (max-width: 760px) {
    .tool-explorer-grid,
    .tools-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 680px) {
    .landing-hero {
        padding-top: 44px;
    }

    .tool-explorer-grid,
    .tools-grid {
        grid-template-columns: 1fr;
    }

    .tool-card {
        min-height: 146px;
    }

    .tools-tabs-wrap {
        justify-content: flex-start;
        padding-left: 0;
        padding-right: 0;
    }
}

@media (max-width: 1024px) {
    .landing-hero h1 {
        font-size: clamp(1.75rem, 3vw, 2.15rem);
        padding: 10px 18px;
    }

    .tool-group-title {
        display: flex;
        width: 100%;
        font-size: 0.82rem;
        letter-spacing: 0.08em;
        padding: 10px 14px;
        border-radius: 10px;
        border: none;
        color: #fff;
        background: linear-gradient(135deg, #27ae60 0%, #1e8449 100%);
        box-shadow: 0 7px 18px rgba(30, 132, 73, 0.2);
    }

    .tool-group-title::before {
        background: #fff;
        box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.28);
    }

    .tools-tabs-wrap {
        display: grid;
        grid-template-columns: repeat(4, minmax(0, 1fr));
        gap: 6px;
        margin-bottom: 16px;
        overflow: visible;
        padding: 0;
    }

    .tool-tab {
        width: 100%;
        min-height: 34px;
        border-radius: 9px;
        text-align: center;
        padding: 5px 8px;
        font-size: 0.82rem;
    }
}

@media (max-width: 768px) {
    .tool-explorer-grid,
    .tools-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .header .container {
        height: auto;
        min-height: 64px;
        padding-top: 8px;
        padding-bottom: 8px;
        gap: 10px;
    }

    .nav {
        flex-wrap: wrap;
        justify-content: flex-end;
        gap: 8px;
    }

    .donate-btn {
        padding: 8px 12px;
        font-size: 0.82rem;
        gap: 6px;
    }

    .nav-user {
        gap: 6px;
        font-size: 0.78rem;
    }

    .nav-user-info {
        display: none;
    }
}

@media (max-width: 768px) {
    .logo {
        font-size: 1.2rem;
        gap: 6px;
    }

    .logo i {
        font-size: 1.35rem;
    }

    .header .nav > .donate-btn {
        display: none;
    }
}

@media (max-width: 680px) {
    .landing-hero h1 {
        font-size: 1.45rem;
        padding: 8px 12px;
    }

    .tool-explorer-grid,
    .tools-grid {
        grid-template-columns: 1fr;
    }

    .tools-tabs-wrap {
        grid-template-columns: repeat(3, minmax(0, 1fr));
        gap: 5px;
    }

    .tool-tab {
        min-height: 30px;
        padding: 4px 6px;
        font-size: 0.76rem;
        border-radius: 8px;
    }
}

@media (prefers-reduced-motion: reduce) {
    .tool-tab,
    .tool-card,
    .tools-panel.panel-animating {
        transition: none;
        animation: none;
    }
}

/* ============== Features Section ============== */
.features-section {
    padding: 60px 0;
    background: var(--white);
}

.features-section h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 40px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.feature {
    text-align: center;
    padding: 30px;
}

.feature i {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.feature h4 {
    font-size: 1.2rem;
    margin-bottom: 10px;
}

.feature p {
    color: var(--text-light);
}

/* ============== Tool Page ============== */
.tool-page {
    padding: 40px 0;
}

.tool-header {
    text-align: center;
    margin-bottom: 40px;
}

.tool-header-icon {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: var(--tool-color);
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin: 0 auto 20px;
}

.tool-header h1 {
    font-size: 2rem;
    margin-bottom: 10px;
}

.tool-header p {
    color: var(--text-light);
    font-size: 1.1rem;
}

.tool-content {
    max-width: 700px;
    margin: 0 auto;
    position: relative;
}

/* ============== Upload Area ============== */
.upload-area {
    background: var(--white);
    border: 3px dashed var(--border-color);
    border-radius: var(--radius);
    padding: 60px 40px;
    text-align: center;
    transition: var(--transition);
    cursor: pointer;
}

.upload-area:hover,
.upload-area.dragover {
    border-color: var(--primary-color);
    background: #f0faf4;
}

.upload-content i {
    font-size: 4rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.upload-content h3 {
    font-size: 1.3rem;
    margin-bottom: 10px;
}

.upload-content p {
    color: var(--text-light);
}

.upload-area input[type="file"] {
    display: none;
}

.upload-preview {
    margin-top: 20px;
}

.upload-preview.has-files .upload-content {
    display: none;
}

.file-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px;
    background: var(--bg-color);
    border-radius: var(--radius-sm);
    margin-bottom: 10px;
}

.file-item i {
    font-size: 1.5rem;
    color: var(--primary-color);
}

.file-item-info {
    flex: 1;
    text-align: left;
}

.file-item-name {
    font-weight: 500;
}

.file-item-size {
    font-size: 0.85rem;
    color: var(--text-light);
}

.file-item-remove {
    color: var(--text-light);
    padding: 5px;
    transition: var(--transition);
}

.file-item-remove:hover {
    color: var(--primary-color);
}

/* Compact file view (single file selected) */
.upload-area.has-file-selected {
    padding: 15px 20px;
    border-style: solid;
    border-color: var(--primary-color);
    background: #f0faf4;
}

.upload-area.has-file-selected .upload-content {
    display: none;
}

.file-item-compact {
    display: flex;
    align-items: center;
    gap: 10px;
    text-align: left;
}

.file-item-compact i {
    font-size: 1.2rem;
    color: var(--primary-color);
}

.file-compact-name {
    font-weight: 500;
    color: var(--text-color);
    max-width: 400px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.file-compact-size {
    font-size: 0.85rem;
    color: var(--text-light);
}

.file-compact-remove {
    margin-left: auto;
    color: var(--text-light);
    padding: 5px 8px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    opacity: 0;
}

.upload-area.has-file-selected:hover .file-compact-remove {
    opacity: 1;
}

.file-compact-remove:hover {
    color: var(--primary-color);
    background: rgba(39, 174, 96, 0.1);
}

.upload-media-preview {
    margin-top: 0.75rem;
    border-radius: var(--radius);
    overflow: hidden;
    background: #000;
}

.upload-media-preview video {
    width: 100%;
    display: block;
    max-height: 360px;
    border-radius: var(--radius);
}

.upload-media-preview audio {
    display: block;
    border-radius: var(--radius);
}

/* ============== Options Panel ============== */
.options-panel {
    background: var(--white);
    border-radius: var(--radius);
    padding: 30px;
    margin-top: 20px;
    box-shadow: var(--shadow);
}

.option-group {
    margin-bottom: 25px;
}

.option-group:last-child {
    margin-bottom: 0;
}

.option-group label {
    display: block;
    font-weight: 500;
    margin-bottom: 10px;
}

.option-group input[type="text"],
.option-group input[type="number"],
.option-group select {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 1rem;
    transition: var(--transition);
}

.option-group input:focus,
.option-group select:focus {
    outline: none;
    border-color: var(--primary-color);
}

.option-group small {
    display: block;
    margin-top: 5px;
    color: var(--text-light);
    font-size: 0.85rem;
}

/* Range Slider */
input[type="range"] {
    width: 100%;
    height: 8px;
    border-radius: 4px;
    background: var(--border-color);
    outline: none;
    appearance: none;
    -webkit-appearance: none;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--primary-color);
    cursor: pointer;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
}

/* Preset Buttons */
.preset-buttons,
.format-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.preset-btn,
.format-btn {
    flex: 1 1 calc(25% - 10px);
    min-width: 100px;
    max-width: calc(25% - 8px);
}

.preset-btn input,
.format-btn input {
    display: none;
}

.preset-btn span,
.format-btn span {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-sm);
    transition: var(--transition);
    font-weight: 500;
    cursor: pointer;
}

.preset-btn input:checked + span,
.format-btn input:checked + span {
    border-color: var(--primary-color);
    background: #f0faf4;
    color: var(--primary-color);
}

/* Compress Preset Cards */
.compress-preset-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 10px;
}
.compress-preset-card {
    cursor: pointer;
}
.compress-preset-card input {
    display: none;
}
.cpc-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    padding: 14px 8px 12px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius);
    transition: all 0.2s;
    text-align: center;
    background: var(--white);
}
.cpc-inner i {
    font-size: 1.5rem;
}
.cpc-name {
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--text-color);
    line-height: 1.2;
}
.cpc-detail {
    font-size: 0.72rem;
    color: var(--text-light);
    line-height: 1.2;
}
.compress-preset-card:hover .cpc-inner {
    border-color: var(--primary-color);
    background: #f8fffe;
}
.compress-preset-card input:checked + .cpc-inner {
    border-color: var(--primary-color);
    background: #f0faf4;
    box-shadow: 0 0 0 1px var(--primary-color);
}
.compress-preset-card input:checked + .cpc-inner .cpc-name {
    color: var(--primary-color);
}
@media (max-width: 600px) {
    .compress-preset-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Method Cards (Noise Removal) */
.method-cards {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.method-card {
    cursor: pointer;
}

.method-card input {
    display: none;
}

.method-card-content {
    border: 2px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 16px;
    transition: all 0.2s;
}

.method-card input:checked + .method-card-content {
    border-color: var(--primary-color);
    background: #f0faf4;
}

.method-card-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 6px;
    font-size: 1rem;
}

.method-card-header i {
    color: var(--text-light);
    width: 20px;
    text-align: center;
}

.method-card input:checked + .method-card-content .method-card-header i {
    color: var(--primary-color);
}

.method-badge {
    font-size: 0.7rem;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: 10px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.method-badge.fast {
    background: #e8f5e9;
    color: #2e7d32;
}

.method-badge.balanced {
    background: #fff3e0;
    color: #e65100;
}

.method-badge.quality {
    background: #e3f2fd;
    color: #1565c0;
}

.method-desc {
    font-size: 0.85rem;
    color: var(--text-light);
    margin-bottom: 8px;
}

.method-pros-cons {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.method-pros-cons .pro,
.method-pros-cons .con {
    font-size: 0.78rem;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 2px 0;
    width: 100%;
}

.method-pros-cons .pro i {
    color: #2e7d32;
    font-size: 0.7rem;
}

.method-pros-cons .con i {
    color: #c62828;
    font-size: 0.7rem;
}

/* Preset Info */
.preset-info {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 15px;
    background: #f0f7ff;
    border-radius: var(--radius-sm);
    color: #1976d2;
    font-size: 0.9rem;
    margin-bottom: 15px;
}

.preset-info i {
    font-size: 1.1rem;
}

/* Position Grid */
.position-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    max-width: 200px;
}

.position-btn input {
    display: none;
}

.position-btn span {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 1.2rem;
    cursor: pointer;
    transition: var(--transition);
}

.position-btn input:checked + span {
    border-color: var(--primary-color);
    background: var(--primary-color);
    color: var(--white);
}

/* Checkbox */
.checkbox-label {
    display: flex !important;
    align-items: center;
    gap: 10px;
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    width: 20px;
    height: 20px;
    accent-color: var(--primary-color);
}

/* Input with suffix */
.input-with-suffix {
    display: flex;
    align-items: center;
    gap: 10px;
}

.input-with-suffix input {
    flex: 1;
}

.input-with-suffix span {
    color: var(--text-light);
}

/* Speed input row */
.speed-input-row {
    display: flex;
    align-items: center;
    gap: 15px;
}

.speed-input-row input[type="range"] {
    flex: 1;
}

.speed-input-row .input-with-suffix input {
    width: 80px;
    text-align: center;
}

.speed-input-row .input-with-suffix {
    min-width: 110px;
}

/* Speed labels */
.speed-labels {
    position: relative;
    margin-top: 5px;
    color: var(--text-light);
    font-size: 0.85rem;
    height: 1.2em;
}

.speed-labels span {
    position: absolute;
    transform: translateX(-50%);
}

.speed-labels span:first-child {
    left: 0;
    transform: translateX(0);
}

.speed-labels span:nth-child(2) {
    left: 20%; /* (1-0.25)/(4-0.25) = 20% */
}

.speed-labels span:nth-child(3) {
    left: 46.67%; /* (2-0.25)/(4-0.25) = 46.67% */
}

.speed-labels span:last-child {
    left: 100%;
    transform: translateX(-100%);
}

@media (max-width: 768px) {
    .speed-input-row {
        flex-direction: column;
        align-items: stretch;
        gap: 10px;
    }

    .speed-input-row .input-with-suffix {
        justify-content: flex-end;
    }

    .speed-input-row .input-with-suffix input {
        width: min(130px, 100%);
    }

    .speed-labels {
        display: flex;
        justify-content: space-between;
        align-items: center;
        gap: 6px;
        margin-top: 8px;
        height: auto;
        font-size: 0.78rem;
    }

    .speed-labels span,
    .speed-labels span:first-child,
    .speed-labels span:nth-child(2),
    .speed-labels span:nth-child(3),
    .speed-labels span:last-child {
        position: static;
        left: auto;
        transform: none;
    }
}

/* Info text */
.info-text {
    background: #e3f2fd;
    padding: 15px;
    border-radius: var(--radius-sm);
    color: #1976d2;
}

.info-text i {
    margin-right: 8px;
}

/* File list for merge */
.file-list {
    margin-top: 15px;
}

/* ============== Submit Button ============== */
.submit-btn {
    width: 100%;
    padding: 18px 30px;
    background: var(--tool-color, var(--primary-color));
    color: var(--white);
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: var(--radius);
    margin-top: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    transition: var(--transition);
}

.submit-btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
}

.submit-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ============== Processing Overlay ============== */
.processing-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.8);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.processing-overlay.active {
    display: flex;
}

.processing-content {
    background: var(--white);
    padding: 50px;
    border-radius: var(--radius);
    text-align: center;
}

.spinner {
    width: 60px;
    height: 60px;
    border: 4px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 20px;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.processing-content h3 {
    margin-bottom: 10px;
}

.processing-content p {
    color: var(--text-light);
}

/* Progress Bar */
.progress-bar-container {
    margin-top: 1.5rem;
    width: 320px;
    max-width: 100%;
    margin-left: auto;
    margin-right: auto;
}

.progress-bar-track {
    height: 12px;
    background: #e9ecef;
    border-radius: 6px;
    overflow: hidden;
}

.recent-source-area {
    background: var(--white);
    border: 2px dashed var(--border);
    border-top: none;
    border-radius: 0 0 var(--radius) var(--radius);
    padding: 18px;
    min-height: 120px;
}

.recent-source-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    margin-bottom: 12px;
    font-size: 0.88rem;
    color: var(--text-light);
}

.recent-source-head i {
    margin-right: 6px;
}

.recent-source-refresh {
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background: var(--white);
    color: var(--text-color);
    font-size: 0.8rem;
    padding: 6px 10px;
    cursor: pointer;
    transition: var(--transition);
}

.recent-source-refresh:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.recent-source-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    max-height: 290px;
    overflow-y: auto;
}

.recent-source-empty {
    color: var(--text-light);
    font-size: 0.88rem;
    padding: 8px 2px;
}

.recent-source-item {
    width: 100%;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background: var(--white);
    padding: 10px 12px;
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    text-align: left;
    transition: var(--transition);
}

button.recent-source-item {
    border: 1px solid var(--border-color);
}

.recent-source-item:hover,
.recent-source-item.active {
    border-color: var(--primary-color);
    background: rgba(99, 102, 241, 0.05);
}

.recent-source-main {
    display: flex;
    flex-direction: column;
    min-width: 0;
    flex: 1;
}

.recent-source-name {
    color: var(--text-color);
    font-size: 0.9rem;
    font-weight: 600;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.recent-source-meta {
    color: var(--text-light);
    font-size: 0.8rem;
}

.recent-source-cta {
    color: var(--primary-color);
    font-size: 0.8rem;
    font-weight: 700;
    white-space: nowrap;
}

.recent-source-check {
    margin-top: 1px;
}

.recent-source-actions {
    margin-top: 12px;
    display: flex;
    justify-content: flex-end;
}

.progress-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, #27ae60, #1e8449);
    border-radius: 6px;
    transition: width 0.8s ease;
    min-width: 0;
}

.progress-bar-pct {
    display: block;
    margin-top: 0.4rem;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-color);
}

/* Cancel Button */
.cancel-task-btn {
    margin-top: 1.2rem;
    padding: 8px 24px;
    min-height: 42px;
    min-width: 150px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: #ef4444;
    border: 1.5px solid #ef4444;
    border-radius: var(--radius);
    color: #fff;
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition);
}

.cancel-task-btn:hover {
    background: #dc2626;
    border-color: #dc2626;
    color: #fff;
}

.task-action-row {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    margin-top: 12px;
}

.task-action-row .cancel-task-btn {
    margin-top: 0;
}

.cancel-task-btn.run-background-btn {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: #fff;
}

.cancel-task-btn.run-background-btn:hover {
    background: #1e8e4f;
    border-color: #1e8e4f;
    color: #fff;
}

/* ============== Source Tabs (File / URL) ============== */
.source-tabs {
    display: flex;
    gap: 0;
    margin-bottom: 0;
    border-bottom: 2px solid var(--border);
    border-radius: var(--radius) var(--radius) 0 0;
    overflow: hidden;
}

.source-tab {
    flex: 1;
    padding: 10px 20px;
    background: transparent;
    border: none;
    color: var(--text-light);
    font-size: 0.95rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
}

.source-tab:hover {
    background: rgba(99, 102, 241, 0.05);
    color: var(--primary);
}

.source-tab.active {
    color: var(--primary);
    border-bottom: 2px solid var(--primary);
    margin-bottom: -2px;
    font-weight: 600;
}

/* When source tabs are above upload area, flatten top corners */
.source-tabs + .upload-area {
    border-radius: 0 0 var(--radius) var(--radius);
    border-top: none;
}

/* URL Input Area */
.url-input-area {
    background: var(--white);
    border: 2px dashed var(--border);
    border-top: none;
    border-radius: 0 0 var(--radius) var(--radius);
    padding: 24px;
    min-height: 120px;
    overflow: hidden;
}

.url-input-row {
    display: flex;
    gap: 10px;
    align-items: center;
}

.url-text-input {
    flex: 1;
    padding: 10px 14px;
    border: 1.5px solid var(--border);
    border-radius: var(--radius);
    font-size: 0.95rem;
    color: var(--text);
    background: var(--bg);
    transition: var(--transition);
}

.url-text-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.btn-fetch-url,
.btn-download-url {
    padding: 10px 18px;
    border: none;
    border-radius: var(--radius);
    font-size: 0.9rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 6px;
    white-space: nowrap;
}

.btn-fetch-url {
    background: var(--primary);
    color: white;
}

.btn-fetch-url:hover {
    background: var(--primary-dark);
}

.btn-fetch-url:disabled,
.btn-download-url:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-download-url {
    background: #10b981;
    color: white;
}

.btn-download-url:hover {
    background: #059669;
}

/* Video Info Panel */
.url-video-info {
    display: flex;
    gap: 16px;
    margin-top: 16px;
    padding: 14px;
    background: var(--bg);
    border-radius: var(--radius);
    border: 1px solid var(--border);
}

.url-video-thumb {
    flex-shrink: 0;
    width: 180px;
    border-radius: 6px;
    overflow: hidden;
}

.url-video-thumb img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 6px;
}

.url-video-details {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 6px;
    min-width: 0;
}

.url-video-title {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.url-video-duration {
    font-size: 0.85rem;
    color: var(--text-light);
}

.url-format-row {
    display: flex;
    gap: 10px;
    align-items: center;
    margin-top: 8px;
}

.url-format-select {
    flex: 1;
    padding: 8px 12px;
    border: 1.5px solid var(--border);
    border-radius: var(--radius);
    font-size: 0.9rem;
    color: var(--text);
    background: var(--white);
    cursor: pointer;
}

.url-format-select:focus {
    outline: none;
    border-color: var(--primary);
}

/* Download Progress */
.url-download-progress {
    margin-top: 14px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.url-download-progress .progress-bar-track {
    flex: 1;
}

.url-progress-text {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--primary);
    min-width: 36px;
    text-align: right;
}

.url-progress-phase {
    font-size: 0.82rem;
    color: var(--text-light);
    min-width: 100px;
}

.url-status {
    margin-top: 8px;
    font-size: 0.85rem;
    color: var(--text-light);
}

.url-status.error {
    color: #e74c3c;
}

.url-status.success {
    color: #10b981;
}

/* Responsive adjustments for URL input */
@media (max-width: 600px) {
    .url-video-info {
        flex-direction: column;
    }
    .url-video-thumb {
        width: 100%;
    }
    .url-format-row {
        flex-direction: column;
    }
    .url-input-row {
        flex-direction: column;
    }
    .btn-fetch-url {
        width: 100%;
        justify-content: center;
    }
}

/* ============== Normalize Volume (generic forms) ============== */
.tool-form[data-tool-id="normalize-audio"] .options-panel {
    display: none !important;
}

@media (max-width: 768px) {
    .tool-form[data-tool-id="normalize-audio"] .source-tab {
        padding: 10px 10px;
        font-size: 0.9rem;
        gap: 5px;
    }

    .tool-form[data-tool-id="normalize-audio"] .upload-area {
        padding: 34px 18px;
        border-width: 2px;
    }

    .tool-form[data-tool-id="normalize-audio"] .upload-content i {
        font-size: 2.8rem;
        margin-bottom: 12px;
    }

    .tool-form[data-tool-id="normalize-audio"] .upload-content h3 {
        font-size: 1.05rem;
        line-height: 1.35;
    }

    .tool-form[data-tool-id="normalize-audio"] .submit-btn {
        margin-top: 22px;
        padding: 16px 18px;
        font-size: 1rem;
    }

    .tool-form[data-tool-id="normalize-audio"] .pipeline-source {
        gap: 12px;
        padding: 14px;
    }

    .tool-form[data-tool-id="normalize-audio"] .source-icon {
        width: 46px;
        height: 46px;
        font-size: 1.15rem;
    }

    .tool-form[data-tool-id="normalize-audio"] .source-change {
        font-size: 0.85rem;
        padding: 10px 12px;
    }
}

@media (max-width: 480px) {
    .tool-form[data-tool-id="normalize-audio"] .source-tab {
        padding: 9px 8px;
        font-size: 0.84rem;
        gap: 4px;
    }

    .tool-form[data-tool-id="normalize-audio"] .upload-area {
        padding: 24px 14px;
    }

    .tool-form[data-tool-id="normalize-audio"] .upload-content h3 {
        font-size: 0.95rem;
    }

    .tool-form[data-tool-id="normalize-audio"] .upload-content p {
        font-size: 0.84rem;
    }

    .tool-form[data-tool-id="normalize-audio"] .file-item-compact {
        align-items: flex-start;
        gap: 8px;
    }

    .tool-form[data-tool-id="normalize-audio"] .file-compact-name {
        max-width: 180px;
    }

    .tool-form[data-tool-id="normalize-audio"] .submit-btn {
        padding: 14px 14px;
    }

    .tool-form[data-tool-id="normalize-audio"] .submit-btn span {
        text-align: center;
        white-space: normal;
    }

    .tool-form[data-tool-id="normalize-audio"] .pipeline-source {
        padding: 12px;
    }

    .tool-form[data-tool-id="normalize-audio"] .source-icon {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }

    .tool-form[data-tool-id="normalize-audio"] .source-size {
        font-size: 0.82rem;
    }
}

/* ============== Remove Background Noise (generic forms) ============== */
@media (max-width: 768px) {
    .tool-form[data-tool-id="remove-bg-noise"] .source-tab {
        padding: 10px 10px;
        font-size: 0.9rem;
        gap: 5px;
    }

    .tool-form[data-tool-id="remove-bg-noise"] .upload-area {
        padding: 34px 18px;
        border-width: 2px;
    }

    .tool-form[data-tool-id="remove-bg-noise"] .upload-content i {
        font-size: 2.8rem;
        margin-bottom: 12px;
    }

    .tool-form[data-tool-id="remove-bg-noise"] .upload-content h3 {
        font-size: 1.05rem;
        line-height: 1.35;
    }

    .tool-form[data-tool-id="remove-bg-noise"] .options-panel {
        padding: 20px;
        margin-top: 14px;
    }

    .tool-form[data-tool-id="remove-bg-noise"] .method-cards {
        gap: 10px;
    }

    .tool-form[data-tool-id="remove-bg-noise"] .method-card-content {
        padding: 13px;
    }

    .tool-form[data-tool-id="remove-bg-noise"] .method-card-header {
        font-size: 0.95rem;
        margin-bottom: 4px;
    }

    .tool-form[data-tool-id="remove-bg-noise"] .method-desc {
        font-size: 0.82rem;
        line-height: 1.4;
        margin-bottom: 0;
    }

    .tool-form[data-tool-id="remove-bg-noise"] .submit-btn {
        margin-top: 20px;
        padding: 15px 18px;
        font-size: 1rem;
    }

    .tool-form[data-tool-id="remove-bg-noise"] .pipeline-source {
        gap: 12px;
        padding: 14px;
    }

    .tool-form[data-tool-id="remove-bg-noise"] .source-icon {
        width: 46px;
        height: 46px;
        font-size: 1.15rem;
    }
}

@media (max-width: 480px) {
    .tool-form[data-tool-id="remove-bg-noise"] .source-tab {
        padding: 9px 8px;
        font-size: 0.84rem;
        gap: 4px;
    }

    .tool-form[data-tool-id="remove-bg-noise"] .upload-area {
        padding: 24px 14px;
    }

    .tool-form[data-tool-id="remove-bg-noise"] .upload-content h3 {
        font-size: 0.95rem;
    }

    .tool-form[data-tool-id="remove-bg-noise"] .upload-content p {
        font-size: 0.84rem;
    }

    .tool-form[data-tool-id="remove-bg-noise"] .options-panel {
        padding: 14px;
    }

    .tool-form[data-tool-id="remove-bg-noise"] .method-card-content {
        padding: 11px;
    }

    .tool-form[data-tool-id="remove-bg-noise"] .method-card-header {
        font-size: 0.9rem;
    }

    .tool-form[data-tool-id="remove-bg-noise"] .method-desc {
        font-size: 0.78rem;
    }

    .tool-form[data-tool-id="remove-bg-noise"] .submit-btn {
        padding: 14px 14px;
    }

    .tool-form[data-tool-id="remove-bg-noise"] .submit-btn span {
        text-align: center;
        white-space: normal;
    }

    .tool-form[data-tool-id="remove-bg-noise"] .pipeline-source {
        padding: 12px;
    }

    .tool-form[data-tool-id="remove-bg-noise"] .source-icon {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }

    .tool-form[data-tool-id="remove-bg-noise"] .source-size {
        font-size: 0.82rem;
    }
}

/* ============== Transcribe (generic forms) ============== */
@media (max-width: 768px) {
    .tool-form[data-tool-id="transcribe"] .source-tab {
        padding: 10px 10px;
        font-size: 0.9rem;
        gap: 5px;
    }

    .tool-form[data-tool-id="transcribe"] .upload-area {
        padding: 34px 18px;
        border-width: 2px;
    }

    .tool-form[data-tool-id="transcribe"] .upload-content i {
        font-size: 2.8rem;
        margin-bottom: 12px;
    }

    .tool-form[data-tool-id="transcribe"] .upload-content h3 {
        font-size: 1.05rem;
        line-height: 1.35;
    }

    .tool-form[data-tool-id="transcribe"] .options-panel {
        padding: 20px;
        margin-top: 14px;
    }

    .tool-form[data-tool-id="transcribe"] .option-group {
        margin-bottom: 18px;
    }

    .tool-form[data-tool-id="transcribe"] .checkbox-label {
        align-items: flex-start;
    }

    .tool-form[data-tool-id="transcribe"] .submit-btn {
        margin-top: 20px;
        padding: 15px 18px;
        font-size: 1rem;
    }

    .tool-form[data-tool-id="transcribe"] .pipeline-source {
        gap: 12px;
        padding: 14px;
    }

    .tool-form[data-tool-id="transcribe"] .source-icon {
        width: 46px;
        height: 46px;
        font-size: 1.15rem;
    }

    .tool-form[data-tool-id="transcribe"] .source-change {
        font-size: 0.85rem;
        padding: 10px 12px;
    }
}

@media (max-width: 480px) {
    .tool-form[data-tool-id="transcribe"] .source-tab {
        padding: 9px 8px;
        font-size: 0.84rem;
        gap: 4px;
    }

    .tool-form[data-tool-id="transcribe"] .upload-area {
        padding: 24px 14px;
    }

    .tool-form[data-tool-id="transcribe"] .upload-content h3 {
        font-size: 0.95rem;
    }

    .tool-form[data-tool-id="transcribe"] .upload-content p {
        font-size: 0.84rem;
    }

    .tool-form[data-tool-id="transcribe"] .options-panel {
        padding: 14px;
    }

    .tool-form[data-tool-id="transcribe"] .option-group label {
        font-size: 0.9rem;
    }

    .tool-form[data-tool-id="transcribe"] .checkbox-label input[type="checkbox"] {
        width: 18px;
        height: 18px;
    }

    .tool-form[data-tool-id="transcribe"] .submit-btn {
        padding: 14px 14px;
    }

    .tool-form[data-tool-id="transcribe"] .submit-btn span {
        text-align: center;
        white-space: normal;
    }

    .tool-form[data-tool-id="transcribe"] .pipeline-source {
        padding: 12px;
    }

    .tool-form[data-tool-id="transcribe"] .source-icon {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }

    .tool-form[data-tool-id="transcribe"] .source-size {
        font-size: 0.82rem;
    }
}

/* ============== Summarize Transcript (generic forms) ============== */
@media (max-width: 768px) {
    .tool-form[data-tool-id="summarize-transcript"] .source-tab {
        padding: 10px 10px;
        font-size: 0.9rem;
        gap: 5px;
    }

    .tool-form[data-tool-id="summarize-transcript"] .upload-area {
        padding: 34px 18px;
        border-width: 2px;
    }

    .tool-form[data-tool-id="summarize-transcript"] .upload-content i {
        font-size: 2.8rem;
        margin-bottom: 12px;
    }

    .tool-form[data-tool-id="summarize-transcript"] .upload-content h3 {
        font-size: 1.05rem;
        line-height: 1.35;
    }

    .tool-form[data-tool-id="summarize-transcript"] .options-panel {
        padding: 20px;
        margin-top: 14px;
    }

    .tool-form[data-tool-id="summarize-transcript"] .option-group {
        margin-bottom: 18px;
    }

    .tool-form[data-tool-id="summarize-transcript"] .submit-btn {
        margin-top: 20px;
        padding: 15px 18px;
        font-size: 1rem;
    }

    .tool-form[data-tool-id="summarize-transcript"] .pipeline-source {
        gap: 12px;
        padding: 14px;
    }

    .tool-form[data-tool-id="summarize-transcript"] .source-icon {
        width: 46px;
        height: 46px;
        font-size: 1.15rem;
    }

    .tool-form[data-tool-id="summarize-transcript"] .source-change {
        font-size: 0.85rem;
        padding: 10px 12px;
    }
}

@media (max-width: 480px) {
    .tool-form[data-tool-id="summarize-transcript"] .source-tab {
        padding: 9px 8px;
        font-size: 0.84rem;
        gap: 4px;
    }

    .tool-form[data-tool-id="summarize-transcript"] .upload-area {
        padding: 24px 14px;
    }

    .tool-form[data-tool-id="summarize-transcript"] .upload-content h3 {
        font-size: 0.95rem;
    }

    .tool-form[data-tool-id="summarize-transcript"] .upload-content p {
        font-size: 0.84rem;
    }

    .tool-form[data-tool-id="summarize-transcript"] .options-panel {
        padding: 14px;
    }

    .tool-form[data-tool-id="summarize-transcript"] .option-group label {
        font-size: 0.9rem;
    }

    .tool-form[data-tool-id="summarize-transcript"] .submit-btn {
        padding: 14px 14px;
    }

    .tool-form[data-tool-id="summarize-transcript"] .submit-btn span {
        text-align: center;
        white-space: normal;
    }

    .tool-form[data-tool-id="summarize-transcript"] .pipeline-source {
        display: grid;
        grid-template-columns: 40px 1fr;
        gap: 10px;
        padding: 12px;
    }

    .tool-form[data-tool-id="summarize-transcript"] .source-icon {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }

    .tool-form[data-tool-id="summarize-transcript"] .source-size {
        font-size: 0.82rem;
    }

    .tool-form[data-tool-id="summarize-transcript"] .source-change {
        grid-column: 1 / -1;
        justify-content: center;
        width: 100%;
    }
}

/* ============== Transcript to Chapters (generic forms) ============== */
@media (max-width: 768px) {
    .tool-form[data-tool-id="transcript-to-chapters"] .source-tab {
        padding: 10px 10px;
        font-size: 0.9rem;
        gap: 5px;
    }

    .tool-form[data-tool-id="transcript-to-chapters"] .upload-area {
        padding: 34px 18px;
        border-width: 2px;
    }

    .tool-form[data-tool-id="transcript-to-chapters"] .upload-content i {
        font-size: 2.8rem;
        margin-bottom: 12px;
    }

    .tool-form[data-tool-id="transcript-to-chapters"] .upload-content h3 {
        font-size: 1.05rem;
        line-height: 1.35;
    }

    .tool-form[data-tool-id="transcript-to-chapters"] .options-panel {
        padding: 20px;
        margin-top: 14px;
    }

    .tool-form[data-tool-id="transcript-to-chapters"] .option-group {
        margin-bottom: 18px;
    }

    .tool-form[data-tool-id="transcript-to-chapters"] .submit-btn {
        margin-top: 20px;
        padding: 15px 18px;
        font-size: 1rem;
    }

    .tool-form[data-tool-id="transcript-to-chapters"] .pipeline-source {
        gap: 12px;
        padding: 14px;
    }

    .tool-form[data-tool-id="transcript-to-chapters"] .source-icon {
        width: 46px;
        height: 46px;
        font-size: 1.15rem;
    }

    .tool-form[data-tool-id="transcript-to-chapters"] .source-change {
        font-size: 0.85rem;
        padding: 10px 12px;
    }
}

@media (max-width: 480px) {
    .tool-form[data-tool-id="transcript-to-chapters"] .source-tab {
        padding: 9px 8px;
        font-size: 0.84rem;
        gap: 4px;
    }

    .tool-form[data-tool-id="transcript-to-chapters"] .upload-area {
        padding: 24px 14px;
    }

    .tool-form[data-tool-id="transcript-to-chapters"] .upload-content h3 {
        font-size: 0.95rem;
    }

    .tool-form[data-tool-id="transcript-to-chapters"] .upload-content p {
        font-size: 0.84rem;
    }

    .tool-form[data-tool-id="transcript-to-chapters"] .options-panel {
        padding: 14px;
    }

    .tool-form[data-tool-id="transcript-to-chapters"] .option-group label {
        font-size: 0.9rem;
    }

    .tool-form[data-tool-id="transcript-to-chapters"] .submit-btn {
        padding: 14px 14px;
    }

    .tool-form[data-tool-id="transcript-to-chapters"] .submit-btn span {
        text-align: center;
        white-space: normal;
    }

    .tool-form[data-tool-id="transcript-to-chapters"] .pipeline-source {
        display: grid;
        grid-template-columns: 40px 1fr;
        gap: 10px;
        padding: 12px;
    }

    .tool-form[data-tool-id="transcript-to-chapters"] .source-icon {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }

    .tool-form[data-tool-id="transcript-to-chapters"] .source-size {
        font-size: 0.82rem;
    }

    .tool-form[data-tool-id="transcript-to-chapters"] .source-change {
        grid-column: 1 / -1;
        justify-content: center;
        width: 100%;
    }
}

/* ============== Extract Frames (generic forms) ============== */
@media (max-width: 768px) {
    .tool-form[data-tool-id="frames"] .source-tab {
        padding: 10px 10px;
        font-size: 0.9rem;
        gap: 5px;
    }

    .tool-form[data-tool-id="frames"] .upload-area {
        padding: 34px 18px;
        border-width: 2px;
    }

    .tool-form[data-tool-id="frames"] .upload-content i {
        font-size: 2.8rem;
        margin-bottom: 12px;
    }

    .tool-form[data-tool-id="frames"] .upload-content h3 {
        font-size: 1.05rem;
        line-height: 1.35;
    }

    .tool-form[data-tool-id="frames"] .options-panel {
        padding: 20px;
        margin-top: 14px;
    }

    .tool-form[data-tool-id="frames"] .option-group {
        margin-bottom: 18px;
    }

    .tool-form[data-tool-id="frames"] .submit-btn {
        margin-top: 20px;
        padding: 15px 18px;
        font-size: 1rem;
    }

    .tool-form[data-tool-id="frames"] .pipeline-source {
        gap: 12px;
        padding: 14px;
    }

    .tool-form[data-tool-id="frames"] .source-icon {
        width: 46px;
        height: 46px;
        font-size: 1.15rem;
    }

    .tool-form[data-tool-id="frames"] .source-change {
        font-size: 0.85rem;
        padding: 10px 12px;
    }
}

@media (max-width: 480px) {
    .tool-form[data-tool-id="frames"] .source-tab {
        padding: 9px 8px;
        font-size: 0.84rem;
        gap: 4px;
    }

    .tool-form[data-tool-id="frames"] .upload-area {
        padding: 24px 14px;
    }

    .tool-form[data-tool-id="frames"] .upload-content h3 {
        font-size: 0.95rem;
    }

    .tool-form[data-tool-id="frames"] .upload-content p {
        font-size: 0.84rem;
    }

    .tool-form[data-tool-id="frames"] .options-panel {
        padding: 14px;
    }

    .tool-form[data-tool-id="frames"] .option-group label {
        font-size: 0.9rem;
    }

    .tool-form[data-tool-id="frames"] .submit-btn {
        padding: 14px 14px;
    }

    .tool-form[data-tool-id="frames"] .submit-btn span {
        text-align: center;
        white-space: normal;
    }

    .tool-form[data-tool-id="frames"] .pipeline-source {
        padding: 12px;
    }

    .tool-form[data-tool-id="frames"] .source-icon {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }

    .tool-form[data-tool-id="frames"] .source-size {
        font-size: 0.82rem;
    }
}

.tool-form[data-tool-id="translate-subtitles"] .srt-preview {
    max-height: 220px;
    overflow-y: auto;
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 12px;
    font-size: 0.85rem;
    color: var(--text-light);
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
    white-space: pre-wrap;
    line-height: 1.4;
}

/* ============== Translate Subtitles (generic forms) ============== */
@media (max-width: 768px) {
    .tool-form[data-tool-id="translate-subtitles"] .upload-area {
        padding: 34px 18px;
        border-width: 2px;
    }

    .tool-form[data-tool-id="translate-subtitles"] .upload-content i {
        font-size: 2.8rem;
        margin-bottom: 12px;
    }

    .tool-form[data-tool-id="translate-subtitles"] .upload-content h3 {
        font-size: 1.05rem;
        line-height: 1.35;
    }

    .tool-form[data-tool-id="translate-subtitles"] .options-panel {
        padding: 20px;
        margin-top: 14px;
    }

    .tool-form[data-tool-id="translate-subtitles"] .option-group {
        margin-bottom: 18px;
    }

    .tool-form[data-tool-id="translate-subtitles"] .submit-btn {
        margin-top: 20px;
        padding: 15px 18px;
        font-size: 1rem;
    }

    .tool-form[data-tool-id="translate-subtitles"] .pipeline-source {
        gap: 12px;
        padding: 14px;
    }

    .tool-form[data-tool-id="translate-subtitles"] .source-icon {
        width: 46px;
        height: 46px;
        font-size: 1.15rem;
    }

    .tool-form[data-tool-id="translate-subtitles"] .source-change {
        font-size: 0.85rem;
        padding: 10px 12px;
    }
}

@media (max-width: 480px) {
    .tool-form[data-tool-id="translate-subtitles"] .upload-area {
        padding: 24px 14px;
    }

    .tool-form[data-tool-id="translate-subtitles"] .upload-content h3 {
        font-size: 0.95rem;
    }

    .tool-form[data-tool-id="translate-subtitles"] .upload-content p {
        font-size: 0.84rem;
    }

    .tool-form[data-tool-id="translate-subtitles"] .options-panel {
        padding: 14px;
    }

    .tool-form[data-tool-id="translate-subtitles"] .option-group label {
        font-size: 0.9rem;
    }

    .tool-form[data-tool-id="translate-subtitles"] .srt-preview {
        font-size: 0.8rem;
        padding: 10px;
        max-height: 180px;
    }

    .tool-form[data-tool-id="translate-subtitles"] .submit-btn {
        padding: 14px 14px;
    }

    .tool-form[data-tool-id="translate-subtitles"] .submit-btn span {
        text-align: center;
        white-space: normal;
    }

    .tool-form[data-tool-id="translate-subtitles"] .pipeline-source {
        padding: 12px;
    }

    .tool-form[data-tool-id="translate-subtitles"] .source-icon {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }

    .tool-form[data-tool-id="translate-subtitles"] .source-size {
        font-size: 0.82rem;
    }
}

/* ============== Embed Subtitles (generic forms) ============== */
.tool-form[data-tool-id="embed-subtitles"] .embed-dual-upload {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
    margin-bottom: 18px;
}

.tool-form[data-tool-id="embed-subtitles"] .embed-upload-section {
    border: 2px dashed var(--border-color);
    border-radius: var(--radius);
    padding: 28px 18px;
    text-align: center;
    cursor: pointer;
    position: relative;
    transition: var(--transition);
    background: var(--white);
}

.tool-form[data-tool-id="embed-subtitles"] .embed-upload-section:hover,
.tool-form[data-tool-id="embed-subtitles"] .embed-upload-section.dragover {
    border-color: var(--primary-color);
    background: rgba(255, 245, 245, 0.85);
}

.tool-form[data-tool-id="embed-subtitles"] .embed-upload-section.has-file {
    border-style: solid;
    border-color: #27ae60;
    background: #f0fff4;
    padding: 14px 16px;
}

.tool-form[data-tool-id="embed-subtitles"] .embed-upload-section .upload-icon {
    font-size: 2.2rem;
    color: var(--primary-color);
    margin-bottom: 8px;
}

.tool-form[data-tool-id="embed-subtitles"] .embed-upload-section.has-file .upload-icon {
    font-size: 1.3rem;
}

.tool-form[data-tool-id="embed-subtitles"] .embed-upload-section h4 {
    margin: 0 0 6px;
    font-size: 1rem;
}

.tool-form[data-tool-id="embed-subtitles"] .embed-upload-section p {
    margin: 0;
    font-size: 0.86rem;
    color: var(--text-light);
}

.tool-form[data-tool-id="embed-subtitles"] .embed-upload-section input[type="file"] {
    position: absolute;
    inset: 0;
    opacity: 0;
    cursor: pointer;
}

.tool-form[data-tool-id="embed-subtitles"] .embed-upload-status {
    margin-top: 8px;
    font-size: 0.84rem;
    color: var(--text-light);
}

.tool-form[data-tool-id="embed-subtitles"] .video-editor {
    background: var(--white);
    border-radius: var(--radius);
    padding: 22px;
    box-shadow: var(--shadow);
    margin-bottom: 16px;
}

.tool-form[data-tool-id="embed-subtitles"] .video-container {
    position: relative;
    background: #000;
    border-radius: var(--radius-sm) var(--radius-sm) 0 0;
    overflow: hidden;
    display: flex;
    justify-content: center;
}

.tool-form[data-tool-id="embed-subtitles"] .video-container video {
    width: 100%;
    max-height: 450px;
    display: block;
}

.tool-form[data-tool-id="embed-subtitles"] .video-container.portrait {
    background: transparent;
    max-width: 360px;
    margin-left: auto;
    margin-right: auto;
}

.tool-form[data-tool-id="embed-subtitles"] .video-container.portrait video {
    width: 100%;
    max-height: 70vh;
    background: #000;
    border-radius: var(--radius-sm) var(--radius-sm) 0 0;
}

.tool-form[data-tool-id="embed-subtitles"] .custom-controls {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    background: #1a1a1a;
    border-radius: 0 0 var(--radius-sm) var(--radius-sm);
}

.tool-form[data-tool-id="embed-subtitles"] .play-btn {
    background: none;
    border: none;
    color: #fff;
    font-size: 1.1rem;
    cursor: pointer;
    padding: 4px 8px;
}

.tool-form[data-tool-id="embed-subtitles"] .seek-bar {
    flex: 1;
    height: 6px;
    -webkit-appearance: none;
    appearance: none;
    background: #444;
    border-radius: 3px;
    outline: none;
    cursor: pointer;
}

.tool-form[data-tool-id="embed-subtitles"] .seek-bar::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--primary-color);
    cursor: pointer;
}

.tool-form[data-tool-id="embed-subtitles"] .time-display {
    color: #ccc;
    font-size: 0.8rem;
    font-family: monospace;
    min-width: 90px;
    text-align: right;
}

.tool-form[data-tool-id="embed-subtitles"] .subtitle-preview-overlay {
    position: absolute;
    left: 0;
    right: 0;
    text-align: center;
    padding: 8px 16px;
    cursor: ns-resize;
    z-index: 10;
    user-select: none;
    border: 2px dashed transparent;
    transition: border-color 0.2s;
}

.tool-form[data-tool-id="embed-subtitles"] .subtitle-preview-overlay:hover {
    border-color: rgba(255, 255, 255, 0.5);
}

.tool-form[data-tool-id="embed-subtitles"] .subtitle-preview-overlay.dragging {
    border-color: var(--primary-color);
    border-style: solid;
}

.tool-form[data-tool-id="embed-subtitles"] .subtitle-preview-text {
    display: inline-block;
    padding: 4px 10px;
    background: rgba(0, 0, 0, 0.7);
    border-radius: 4px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.8);
    pointer-events: none;
    max-width: 92%;
    white-space: pre-wrap;
}

.tool-form[data-tool-id="embed-subtitles"] .subtitle-settings {
    background: var(--white);
    border-radius: var(--radius);
    padding: 22px;
    box-shadow: var(--shadow);
    margin-bottom: 16px;
}

.tool-form[data-tool-id="embed-subtitles"] .subtitle-settings h3 {
    margin: 0 0 16px;
    font-size: 1.05rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

.tool-form[data-tool-id="embed-subtitles"] .settings-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
}

.tool-form[data-tool-id="embed-subtitles"] .setting-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.tool-form[data-tool-id="embed-subtitles"] .setting-group label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-light);
}

.tool-form[data-tool-id="embed-subtitles"] .setting-group input,
.tool-form[data-tool-id="embed-subtitles"] .font-dropdown-trigger {
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    background: var(--white);
}

.tool-form[data-tool-id="embed-subtitles"] .font-dropdown {
    position: relative;
}

.tool-form[data-tool-id="embed-subtitles"] .font-dropdown-trigger {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    text-align: left;
    cursor: pointer;
}

.tool-form[data-tool-id="embed-subtitles"] .font-dropdown-menu {
    display: none;
    position: absolute;
    top: calc(100% + 4px);
    left: 0;
    right: 0;
    z-index: 20;
    background: var(--white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
    max-height: 280px;
    overflow: hidden;
}

.tool-form[data-tool-id="embed-subtitles"] .font-dropdown.open .font-dropdown-menu {
    display: block;
}

.tool-form[data-tool-id="embed-subtitles"] .font-dropdown-search {
    width: 100%;
    border: 0;
    border-bottom: 1px solid var(--border-color);
    padding: 8px 10px;
    font-size: 0.84rem;
}

.tool-form[data-tool-id="embed-subtitles"] .font-dropdown-list {
    max-height: 220px;
    overflow-y: auto;
}

.tool-form[data-tool-id="embed-subtitles"] .font-dropdown-option {
    padding: 9px 12px;
    cursor: pointer;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    transition: background 0.15s;
}

.tool-form[data-tool-id="embed-subtitles"] .font-dropdown-option:hover {
    background: var(--gray-bg);
}

.tool-form[data-tool-id="embed-subtitles"] .font-dropdown-option.selected {
    background: rgba(108, 92, 231, 0.1);
    color: var(--primary-color);
    font-weight: 600;
}

.tool-form[data-tool-id="embed-subtitles"] .color-input-wrapper {
    display: flex;
    align-items: center;
    gap: 8px;
}

.tool-form[data-tool-id="embed-subtitles"] .color-input-wrapper input[type="color"] {
    width: 40px;
    height: 40px;
    padding: 2px;
}

.tool-form[data-tool-id="embed-subtitles"] .color-hex,
.tool-form[data-tool-id="embed-subtitles"] .position-indicator {
    font-size: 0.84rem;
    color: var(--text-light);
}

.tool-form[data-tool-id="embed-subtitles"] .embed-srt-upload input[type="file"] {
    width: 100%;
    padding: 10px;
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-sm);
    cursor: pointer;
}

@media (max-width: 768px) {
    .tool-form[data-tool-id="embed-subtitles"] .embed-dual-upload,
    .tool-form[data-tool-id="embed-subtitles"] .settings-grid {
        grid-template-columns: 1fr;
    }

    .tool-form[data-tool-id="embed-subtitles"] .video-editor,
    .tool-form[data-tool-id="embed-subtitles"] .subtitle-settings {
        padding: 16px;
    }

    .tool-form[data-tool-id="embed-subtitles"] .pipeline-source {
        gap: 12px;
        padding: 14px;
    }

    .tool-form[data-tool-id="embed-subtitles"] .source-icon {
        width: 46px;
        height: 46px;
        font-size: 1.1rem;
    }
}

@media (max-width: 480px) {
    .tool-form[data-tool-id="embed-subtitles"] .embed-upload-section {
        padding: 20px 14px;
    }

    .tool-form[data-tool-id="embed-subtitles"] .video-editor,
    .tool-form[data-tool-id="embed-subtitles"] .subtitle-settings {
        padding: 12px;
    }

    .tool-form[data-tool-id="embed-subtitles"] .time-display {
        min-width: 78px;
        font-size: 0.74rem;
    }

    .tool-form[data-tool-id="embed-subtitles"] .subtitle-preview-text {
        max-width: 96%;
    }

    .tool-form[data-tool-id="embed-subtitles"] .pipeline-source {
        padding: 12px;
    }

    .tool-form[data-tool-id="embed-subtitles"] .source-icon {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }

    .tool-form[data-tool-id="embed-subtitles"] .source-size {
        font-size: 0.82rem;
    }
}

/* ============== Result Page ============== */
.result-page {
    padding: 60px 0;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 60vh;
}

.result-card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 50px;
    text-align: center;
    box-shadow: var(--shadow-lg);
    max-width: 1000px;
    width: 100%;
    box-sizing: border-box;
    overflow: hidden;
}

.result-card.subtitle-result-card {
    max-width: 1200px;
}

.result-icon {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 2.5rem;
}

.result-icon.success {
    background: #e8f5e9;
    color: #4caf50;
}

.result-card h1 {
    margin-bottom: 30px;
}

.video-preview {
    margin-bottom: 25px;
    border-radius: var(--radius-sm);
    overflow: hidden;
    background: #000;
    display: flex;
    justify-content: center;
}

.video-preview video {
    display: block;
    width: 100%;
    height: auto;
    max-height: 500px;
    object-fit: contain;
}

.video-preview.portrait {
    background: transparent;
}

.video-preview.portrait video {
    width: auto;
    max-width: 100%;
    max-height: 70vh;
    border-radius: var(--radius-sm);
    background: #000;
}

.video-error {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
    color: var(--text-light);
    text-align: center;
    background: #1a1a1a;
    min-height: 150px;
}

.video-error i {
    font-size: 2.5rem;
    color: #f39c12;
    margin-bottom: 15px;
}

.video-error p {
    margin: 0;
    line-height: 1.6;
}

.image-preview {
    margin-bottom: 25px;
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.image-preview img {
    max-width: 100%;
    max-height: 300px;
    display: block;
    margin: 0 auto;
}

.file-info {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 20px;
    background: var(--bg-color);
    border-radius: var(--radius-sm);
    margin-bottom: 30px;
}

.file-preview {
    width: 60px;
    height: 60px;
    background: var(--primary-color);
    color: var(--white);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.file-details {
    text-align: left;
}

.file-name {
    font-weight: 500;
    word-break: break-all;
}

.file-size {
    color: var(--text-light);
    font-size: 0.9rem;
}

.download-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 40px;
    background: var(--primary-color);
    color: var(--white);
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: var(--radius);
    transition: var(--transition);
}

.download-btn:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

.result-actions {
    display: flex;
    justify-content: center;
    gap: 30px;
    margin-top: 30px;
}

.action-link {
    color: var(--text-light);
    display: flex;
    align-items: center;
    gap: 8px;
    transition: var(--transition);
}

.action-link:hover {
    color: var(--primary-color);
}

.cleanup-notice {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
    color: var(--text-light);
    font-size: 0.9rem;
}

/* ============== Pipeline Section ============== */
.pipeline-section {
    margin-top: 30px;
    padding: 25px;
    background: var(--bg-color);
    border-radius: var(--radius);
    text-align: left;
}

.pipeline-section h3 {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 8px;
    color: var(--text-color);
    font-size: 1.1rem;
}

.pipeline-section h3 i {
    color: var(--primary-color);
}

.pipeline-hint {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 20px;
}

.pipeline-tools {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
}

.pipeline-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 15px 10px;
    background: var(--white);
    border-radius: var(--radius-sm);
    border: 2px solid var(--border-color);
    transition: var(--transition);
    text-align: center;
}

.pipeline-btn i {
    font-size: 1.3rem;
    color: var(--tool-color, var(--primary-color));
}

.pipeline-btn span {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-color);
}

.pipeline-btn:hover {
    border-color: var(--tool-color, var(--primary-color));
    background: rgba(39, 174, 96, 0.05);
    transform: translateY(-2px);
}

.action-link.go-back {
    color: var(--primary-color);
    font-weight: 500;
}

/* Pipeline Source File Display */
.pipeline-source {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 20px;
    background: var(--bg-color);
    border-radius: var(--radius);
    margin-bottom: 25px;
}

.source-icon {
    width: 60px;
    height: 60px;
    background: var(--primary-color);
    color: var(--white);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.source-info {
    flex: 1;
    text-align: left;
}

.source-info h3 {
    font-size: 0.85rem;
    color: var(--text-light);
    font-weight: 400;
    margin-bottom: 4px;
}

.source-filename {
    font-weight: 500;
    word-break: break-all;
    margin-bottom: 2px;
}

.source-size {
    color: var(--text-light);
    font-size: 0.9rem;
}

.source-change {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 15px;
    background: var(--white);
    border-radius: var(--radius-sm);
    color: var(--text-light);
    font-size: 0.9rem;
    transition: var(--transition);
}

.source-change:hover {
    color: var(--primary-color);
    background: var(--white);
}

@media (max-width: 768px) {
    .pipeline-tools {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .pipeline-source {
        flex-wrap: wrap;
    }
    
    .source-change {
        width: 100%;
        justify-content: center;
    }
}

/* ============== Error Page ============== */
.error-page {
    padding: 60px 0;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 60vh;
}

.error-card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 50px;
    text-align: center;
    box-shadow: var(--shadow-lg);
    max-width: 500px;
    width: 100%;
}

.error-icon {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: #ffebee;
    color: #e74c3c;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 2.5rem;
}

.error-message {
    background: var(--bg-color);
    padding: 15px;
    border-radius: var(--radius-sm);
    margin: 20px 0 30px;
    color: var(--text-light);
    word-break: break-word;
}

.error-actions {
    display: flex;
    gap: 15px;
    justify-content: center;
}

.primary-btn,
.secondary-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: var(--radius-sm);
    font-weight: 500;
    transition: var(--transition);
}

.primary-btn {
    background: var(--primary-color);
    color: var(--white);
}

.primary-btn:hover {
    background: var(--primary-dark);
}

.secondary-btn {
    background: var(--bg-color);
    color: var(--text-color);
}

.secondary-btn:hover {
    background: var(--border-color);
}

/* ============== Donate Button ============== */
.donate-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: linear-gradient(135deg, #27ae60, #1e8449);
    color: var(--white);
    border-radius: var(--radius-sm);
    font-weight: 500;
    font-size: 0.9rem;
    transition: var(--transition);
    border: none;
    cursor: pointer;
}

.donate-btn:hover {
    background: linear-gradient(135deg, #1e8449, #196f3d);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(39, 174, 96, 0.3);
}

.donate-btn i {
    color: #fff;
}

/* ============== Modal ============== */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    backdrop-filter: blur(4px);
}

.modal-content {
    background: var(--white);
    border-radius: var(--radius);
    padding: 30px;
    max-width: 450px;
    width: 90%;
    position: relative;
    box-shadow: var(--shadow-lg);
    animation: modalSlideIn 0.3s ease;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-close {
    position: absolute;
    top: 15px;
    right: 15px;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-light);
    cursor: pointer;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: var(--transition);
}

.modal-close:hover {
    background: var(--bg-color);
    color: var(--text-color);
}

/* ============== Donate Modal ============== */
.donate-header {
    text-align: center;
    margin-bottom: 25px;
}

.donate-icon {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.donate-header h2 {
    font-size: 1.5rem;
    margin-bottom: 10px;
    color: var(--text-color);
}

.donate-header p {
    color: var(--text-light);
    font-size: 0.95rem;
}

.donate-amount {
    margin-bottom: 20px;
}

.donate-amount label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-color);
}

.amount-input-wrapper {
    display: flex;
    align-items: center;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-sm);
    overflow: hidden;
    transition: var(--transition);
}

.amount-input-wrapper:focus-within {
    border-color: var(--primary-color);
}

.currency-symbol {
    padding: 12px 15px;
    background: var(--bg-color);
    color: var(--text-color);
    font-weight: 600;
    font-size: 1.1rem;
}

.amount-input-wrapper input {
    flex: 1;
    border: none;
    padding: 12px 15px;
    font-size: 1.1rem;
    outline: none;
}

.donate-note {
    text-align: center;
    color: var(--text-light);
    font-size: 0.85rem;
    margin-top: 15px;
}

.donate-note i {
    margin-right: 5px;
    color: #27ae60;
}

/* ============== Thank You Message ============== */
.thank-you-message {
    text-align: center;
    padding: 20px 0;
}

.thank-you-icon {
    font-size: 4rem;
    color: var(--primary-color);
    margin-bottom: 20px;
    animation: heartBeat 1s ease-in-out;
}

@keyframes heartBeat {
    0%, 100% { transform: scale(1); }
    25% { transform: scale(1.1); }
    50% { transform: scale(1); }
    75% { transform: scale(1.1); }
}

.thank-you-message h2 {
    font-size: 1.8rem;
    margin-bottom: 15px;
    color: var(--text-color);
}

.thank-you-message p {
    color: var(--text-light);
    margin-bottom: 25px;
}

.thank-you-message .btn-primary {
    display: inline-block;
    padding: 12px 30px;
    background: var(--primary-color);
    color: var(--white);
    border: none;
    border-radius: var(--radius-sm);
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.thank-you-message .btn-primary:hover {
    background: var(--primary-dark);
}

/* ============== Payment Modal ============== */
.payment-header {
    text-align: center;
    margin-bottom: 25px;
}

.payment-icon {
    font-size: 3rem;
    color: var(--secondary-color);
    margin-bottom: 15px;
}

.payment-header h2 {
    font-size: 1.5rem;
    margin-bottom: 10px;
    color: var(--text-color);
}

.payment-header p {
    color: var(--text-light);
    font-size: 0.95rem;
}

.pricing-breakdown {
    background: var(--bg-color);
    border-radius: var(--radius-sm);
    padding: 15px 20px;
    margin-bottom: 15px;
}

.pricing-row {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    color: var(--text-color);
}

.pricing-row.total {
    border-top: 2px solid var(--border-color);
    margin-top: 8px;
    padding-top: 12px;
    font-weight: 600;
    font-size: 1.1rem;
}

.pricing-note {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-light);
    font-size: 0.85rem;
    margin-bottom: 20px;
    padding: 10px 15px;
    background: #fff8e1;
    border-radius: var(--radius-sm);
}

.pricing-note i {
    color: #f39c12;
}

.payment-secure {
    text-align: center;
    color: var(--text-light);
    font-size: 0.85rem;
    margin-top: 15px;
}

.payment-secure i {
    margin-right: 5px;
    color: #27ae60;
}

/* ============== Pricing Info Display ============== */
.pricing-info {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    margin: 15px 0;
}

.pricing-info.free {
    background: #e8f5e9;
    color: #2e7d32;
}

.pricing-info.free i {
    color: #4caf50;
}

.pricing-info.paid {
    background: #fff3e0;
    color: #e65100;
}

.pricing-info.paid i {
    color: #ff9800;
}

/* ============== Donate Section on Result Page ============== */
/* Download Payment Pricing Info */
.download-pricing-info {
    margin: 1.5rem 0;
    padding: 0;
}

.pricing-alert {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    background: linear-gradient(135deg, #fff3cd 0%, #ffeeba 100%);
    border: 1px solid #ffc107;
    border-radius: 12px;
    padding: 1.25rem;
    color: #856404;
}

.pricing-alert > i {
    font-size: 1.5rem;
    margin-top: 0.25rem;
}

.pricing-details {
    flex: 1;
}

.pricing-details strong {
    display: block;
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    color: #664d03;
}

.pricing-details p {
    margin: 0.25rem 0;
    font-size: 0.95rem;
}

.pricing-amount {
    margin-top: 0.5rem !important;
    font-size: 1.1rem !important;
    color: #664d03;
}

.download-btn.payment-required {
    background: linear-gradient(135deg, #f39c12 0%, #e67e22 100%);
    border: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    font-size: 1.1rem;
    border-radius: 12px;
    color: white;
    text-decoration: none;
    transition: all 0.3s ease;
    width: 100%;
    max-width: 300px;
}

.download-btn.payment-required:hover {
    background: linear-gradient(135deg, #e67e22 0%, #d35400 100%);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(243, 156, 18, 0.4);
}

.donate-section {
    margin-top: 30px;
    padding: 25px;
    background: linear-gradient(135deg, #e8f5e9, #f0faf4);
    border-radius: var(--radius);
    text-align: center;
    border: 1px solid #a5d6a7;
}

.donate-section h3 {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    font-size: 1.2rem;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.donate-section p {
    color: var(--text-light);
    margin-bottom: 15px;
    font-size: 0.95rem;
}

.donate-section .donate-btn {
    padding: 12px 24px;
    font-size: 1rem;
    margin: 0 auto;
}

.donate-pro-cta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: fit-content;
    margin: 14px auto 0;
    padding: 10px 16px;
    border-radius: 999px;
    border: 1px solid #d7a11f;
    background: linear-gradient(135deg, #f9e08b, #f2c14d);
    color: #6f4300;
    font-weight: 700;
    text-decoration: none;
    box-shadow: 0 4px 12px rgba(215, 161, 31, 0.3);
    transition: all 0.2s ease;
}

.donate-pro-cta i {
    color: #8c5a00;
}

.donate-pro-cta:hover {
    color: #5e3900;
    transform: translateY(-1px);
    box-shadow: 0 6px 14px rgba(215, 161, 31, 0.38);
}

/* ============== Responsive ============== */
@media (max-width: 1024px) {
    .tools-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .hero h1 {
        font-size: 1.8rem;
    }

    .tools-grid {
        grid-template-columns: 1fr;
    }

    .tool-card {
        padding: 25px;
    }

    .upload-area {
        padding: 40px 20px;
    }

    .options-panel {
        padding: 20px;
    }

    .preset-buttons,
    .format-buttons {
        flex-direction: column;
    }

    .result-card,
    .error-card {
        padding: 30px 20px;
    }

    .file-info {
        flex-direction: column;
        text-align: center;
    }

    .file-details {
        text-align: center;
    }

    .error-actions {
        flex-direction: column;
    }
}

/* ============== Pricing Section ============== */
.pricing-section {
    padding: 60px 0;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

.pricing-section h2 {
    text-align: center;
    font-size: 2rem;
    margin-bottom: 40px;
    color: var(--text-color);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
}

.pricing-section h2 i {
    color: var(--primary-color);
}

.pricing-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
    max-width: 900px;
    margin: 0 auto;
}

@media (max-width: 900px) {
    .pricing-cards {
        grid-template-columns: 1fr;
        max-width: 400px;
    }
}

.pricing-card {
    background: var(--card-background);
    border-radius: var(--radius);
    padding: 35px 30px;
    text-align: center;
    box-shadow: var(--shadow);
    position: relative;
    transition: transform 0.3s, box-shadow 0.3s;
}

.pricing-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.pricing-card.free {
    border-top: 4px solid #27ae60;
}

.pricing-card.paid {
    border-top: 4px solid var(--primary-color);
}

.pricing-card.pro-plan {
    border-top: 4px solid #f39c12;
}

.pricing-card.pro-plan .pricing-badge {
    background: linear-gradient(135deg, #f39c12, #e67e22);
    color: white;
}

.pricing-pro-link {
    display: inline-block;
    margin-top: 10px;
    color: #f39c12;
    font-weight: 600;
    font-size: 0.9rem;
    transition: var(--transition);
}

.pricing-pro-link:hover {
    color: #e67e22;
}

.pricing-badge {
    display: inline-block;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    margin-bottom: 15px;
}

.pricing-card.free .pricing-badge {
    background: #d4edda;
    color: #155724;
}

.pricing-card.paid .pricing-badge {
    background: #e8f5e9;
    color: var(--primary-color);
}

.pricing-card h3 {
    font-size: 1.3rem;
    color: var(--text-color);
    margin-bottom: 10px;
}

.pricing-amount {
    font-size: 3rem;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 5px;
}

.pricing-amount span {
    font-size: 1rem;
    font-weight: 400;
    color: var(--text-light);
}

.pricing-detail {
    color: var(--text-light);
    font-size: 0.95rem;
    margin-bottom: 25px;
}

.pricing-features {
    list-style: none;
    padding: 0;
    margin: 0 0 20px 0;
    text-align: left;
}

.pricing-features li {
    padding: 8px 0;
    color: var(--text-light);
    display: flex;
    align-items: center;
    gap: 10px;
}

.pricing-features li i {
    color: #27ae60;
    font-size: 0.9rem;
}

.pricing-note-general {
    text-align: center;
    color: var(--text-light);
    font-size: 0.9rem;
    margin-top: 20px;
}

.pricing-note-general i {
    margin-right: 5px;
}

.pricing-example {
    background: #fff3cd;
    color: #856404;
    padding: 10px 15px;
    border-radius: var(--radius);
    font-size: 0.9rem;
    font-weight: 500;
    margin-top: 15px;
}

@media (max-width: 768px) {
    .pricing-section h2 {
        font-size: 1.5rem;
    }
    
    .pricing-amount {
        font-size: 2.5rem;
    }
}

/* ============== Footer Links ============== */
.footer-links {
    margin-top: 15px;
}

.footer-links a {
    color: var(--text-light);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.2s;
}

.footer-links a:hover {
    color: var(--primary-color);
}

.footer-divider {
    color: var(--text-light);
    margin: 0 10px;
    opacity: 0.5;
}

/* ============== Legal Pages ============== */
.legal-page {
    padding: 40px 0 60px;
}

.legal-page h1 {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.legal-page .last-updated {
    text-align: center;
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 40px;
}

.legal-content {
    background: var(--card-background);
    border-radius: var(--radius);
    padding: 40px;
    box-shadow: var(--shadow);
    max-width: 900px;
    margin: 0 auto;
}

.legal-content h2 {
    color: var(--text-color);
    font-size: 1.3rem;
    margin-top: 30px;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--border-color);
}

.legal-content h2:first-child {
    margin-top: 0;
}

.legal-content h3 {
    color: var(--text-color);
    font-size: 1.1rem;
    margin-top: 20px;
    margin-bottom: 10px;
}

.legal-content p {
    color: var(--text-light);
    line-height: 1.7;
    margin-bottom: 15px;
}

.legal-content ul {
    color: var(--text-light);
    line-height: 1.7;
    margin-bottom: 15px;
    padding-left: 25px;
}

.legal-content li {
    margin-bottom: 8px;
}

.legal-content a {
    color: var(--primary-color);
    text-decoration: none;
}

.legal-content a:hover {
    text-decoration: underline;
}

.legal-content strong {
    color: var(--text-color);
}

.legal-back {
    text-align: center;
    margin-top: 40px;
}

.legal-back .btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 30px;
    background: var(--primary-color);
    color: white;
    border-radius: var(--radius);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.2s;
}

.legal-back .btn-primary:hover {
    background: #1e8449;
    transform: translateY(-2px);
}

@media (max-width: 768px) {
    .legal-content {
        padding: 25px;
    }
    
    .legal-page h1 {
        font-size: 1.5rem;
    }
}

/* ============== Usage Banner ============== */
.usage-banner {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 20px;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    margin-bottom: 20px;
}

.usage-banner i {
    font-size: 1.1rem;
    flex-shrink: 0;
}

.usage-banner-free {
    background: #e8f5e9;
    color: #2e7d32;
    border: 1px solid #a5d6a7;
}

.usage-banner-paid {
    background: #fff3e0;
    color: #e65100;
    border: 1px solid #ffcc80;
}

/* ============== Coming Soon Page ============== */
.coming-soon-page {
    text-align: center;
    padding: 80px 20px;
    max-width: 500px;
    margin: 0 auto;
}

.coming-soon-icon {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background: var(--tool-color);
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    margin: 0 auto 30px;
}

.coming-soon-page h1 {
    font-size: 2rem;
    margin-bottom: 12px;
}

.coming-soon-description {
    color: var(--text-light);
    font-size: 1.1rem;
    margin-bottom: 30px;
}

.coming-soon-status {
    background: var(--white);
    border-radius: var(--radius);
    padding: 30px;
    box-shadow: var(--shadow);
    margin-bottom: 30px;
}

.progress-indicator {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: linear-gradient(135deg, #f39c12, #e67e22);
    color: white;
    padding: 8px 20px;
    border-radius: 20px;
    font-weight: 600;
    font-size: 0.95rem;
    margin-bottom: 12px;
}

.coming-soon-status p {
    color: var(--text-light);
}

.btn-back {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    background: var(--primary-color);
    color: white;
    border-radius: var(--radius-sm);
    font-weight: 600;
    transition: var(--transition);
}

.btn-back:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

/* ============== Nav Pro Link ============== */
.nav-pro {
    color: #f39c12 !important;
    font-weight: 600;
}

.nav-pro i {
    margin-right: 2px;
}

.nav-pro.active-pro {
    background: linear-gradient(135deg, #f39c12, #e67e22);
    color: white !important;
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 0.85rem;
}

/* ============== Usage Banner Pro ============== */
.usage-banner-pro {
    background: linear-gradient(135deg, #fff8e1, #fff3c4);
    color: #5d4e37;
    border: 1px solid #f9d77e;
}

.usage-banner-pro i {
    color: #f39c12;
}

@media (max-width: 768px) {
    .usage-banner.usage-banner-pro {
        flex-wrap: nowrap;
        padding: 10px 12px;
        font-size: 0.82rem;
        gap: 8px;
    }

    .usage-banner.usage-banner-pro span {
        min-width: 0;
        display: block;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
    }
}

/* ============== Subscribe Page ============== */
.subscribe-page {
    padding: 40px 0 80px;
}

.subscribe-header {
    text-align: center;
    margin-bottom: 40px;
}

.subscribe-icon {
    font-size: 3rem;
    color: #f39c12;
    margin-bottom: 15px;
}

.subscribe-header h1 {
    font-size: 2.2rem;
    margin-bottom: 8px;
}

.subscribe-header p {
    color: var(--text-light);
    font-size: 1.1rem;
}

.sub-status-banner {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 15px 20px;
    background: linear-gradient(135deg, #fff8e1, #fff3c4);
    border: 1px solid #f9d77e;
    border-radius: var(--radius-sm);
    margin-bottom: 30px;
    color: #5d4e37;
}

.sub-status-banner i:first-child {
    color: #f39c12;
    font-size: 1.2rem;
}

.sub-manage-btn {
    margin-left: auto;
    background: #f39c12;
    color: white;
    border: none;
    padding: 6px 16px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-weight: 600;
    font-size: 0.85rem;
    transition: var(--transition);
}

.sub-manage-btn:hover {
    background: #e67e22;
}

.subscribe-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    max-width: 700px;
    margin: 0 auto 40px;
}

.sub-plan-card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 35px 30px;
    box-shadow: var(--shadow);
    text-align: center;
    position: relative;
    border: 2px solid transparent;
    transition: var(--transition);
}

.sub-plan-card.pro {
    border-color: #f39c12;
}

.sub-plan-badge {
    display: inline-block;
    padding: 4px 16px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 1px;
    margin-bottom: 12px;
    background: #e8f5e9;
    color: #2e7d32;
}

.pro-badge {
    background: linear-gradient(135deg, #f39c12, #e67e22) !important;
    color: white !important;
}

.sub-plan-price {
    font-size: 2.5rem;
    font-weight: 800;
    margin: 10px 0 0;
}

.sub-plan-price span {
    font-size: 1rem;
    font-weight: 400;
    color: var(--text-light);
}

.sub-plan-period {
    color: var(--text-light);
    font-size: 0.85rem;
    margin-bottom: 20px;
}

.sub-plan-features {
    list-style: none;
    text-align: left;
    margin-bottom: 25px;
}

.sub-plan-features li {
    padding: 6px 0;
    font-size: 0.9rem;
}

.sub-plan-features li i {
    margin-right: 8px;
    color: #2e7d32;
    width: 16px;
}

.sub-plan-features li.muted {
    color: var(--text-light);
}

.sub-plan-features li.muted i {
    color: #ccc;
}

.sub-plan-btn {
    width: 100%;
    padding: 12px 20px;
    background: linear-gradient(135deg, #f39c12, #e67e22);
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: var(--transition);
}

.sub-plan-btn:hover {
    background: linear-gradient(135deg, #e67e22, #d35400);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(243, 156, 18, 0.4);
}

.sub-plan-btn:disabled {
    background: #ccc;
    cursor: not-allowed;
    transform: none;
}

.sub-plan-current {
    padding: 10px;
    background: #f5f5f5;
    border-radius: var(--radius-sm);
    font-weight: 600;
    color: var(--text-light);
    font-size: 0.9rem;
}

.sub-plan-current.pro-active {
    background: linear-gradient(135deg, #fff8e1, #fff3c4);
    color: #e67e22;
}

.sub-restore {
    text-align: center;
    margin-bottom: 40px;
    color: var(--text-light);
    font-size: 0.9rem;
}

.sub-restore a {
    color: var(--primary-color);
    font-weight: 600;
}

.restore-form {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin-top: 12px;
    flex-wrap: wrap;
}

.restore-input {
    padding: 8px 14px;
    border: 1px solid #ddd;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    width: 280px;
}

.restore-btn {
    padding: 8px 18px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-weight: 600;
    font-size: 0.9rem;
}

.restore-message {
    width: 100%;
    text-align: center;
    font-size: 0.85rem;
    margin-top: 5px;
}

.restore-message.success { color: #2e7d32; }
.restore-message.error { color: #e53935; }

.sub-info {
    max-width: 700px;
    margin: 0 auto;
}

.sub-info h3 {
    text-align: center;
    margin-bottom: 25px;
    color: var(--text-color);
}

.sub-info h3 i {
    color: var(--primary-color);
    margin-right: 6px;
}

.sub-info-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.sub-info-item {
    background: var(--white);
    padding: 20px;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow-sm);
    text-align: center;
}

.sub-info-item i {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.sub-info-item h4 {
    margin-bottom: 6px;
    font-size: 0.95rem;
}

.sub-info-item p {
    color: var(--text-light);
    font-size: 0.85rem;
    line-height: 1.4;
}

@media (max-width: 768px) {
    .subscribe-grid {
        grid-template-columns: 1fr;
    }
    
    .sub-info-grid {
        grid-template-columns: 1fr;
    }
}

/* ============== Stripe Payment Button ============== */
.stripe-pay-btn {
    width: 100%;
    padding: 15px 25px;
    background: linear-gradient(135deg, #635bff 0%, #7b73ff 100%);
    color: white;
    border: none;
    border-radius: var(--radius);
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    transition: all 0.3s ease;
    margin-top: 20px;
}

.stripe-pay-btn:hover {
    background: linear-gradient(135deg, #5851ea 0%, #6b63ff 100%);
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(99, 91, 255, 0.4);
}

.stripe-pay-btn:disabled {
    background: #ccc;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.stripe-pay-btn i {
    font-size: 1.2rem;
}

/* ==================== Login Page ==================== */
.login-page {
    padding: 80px 0;
    min-height: 60vh;
    display: flex;
    align-items: center;
}

.login-card {
    max-width: 440px;
    margin: 0 auto;
    background: var(--card-background);
    border-radius: var(--radius);
    padding: 50px 40px;
    box-shadow: var(--shadow);
    text-align: center;
}

.login-header {
    margin-bottom: 30px;
}

.login-icon {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.login-icon.success {
    color: #27ae60;
}

.login-header h1 {
    font-size: 1.8rem;
    color: var(--text-color);
    margin-bottom: 8px;
}

.login-header p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.login-error {
    background: #fdecea;
    color: #c0392b;
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 0.9rem;
    text-align: left;
}

.login-form {
    margin-bottom: 20px;
}

.login-input-group {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.login-input {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    outline: none;
    transition: border-color 0.3s;
    box-sizing: border-box;
}

.login-input:focus {
    border-color: var(--primary-color);
}

.login-btn {
    width: 100%;
    padding: 14px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.login-btn:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.login-info {
    margin-top: 24px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.login-info p {
    color: var(--text-secondary);
    font-size: 0.85rem;
    margin-bottom: 6px;
}

.login-info i {
    margin-right: 6px;
    color: var(--primary-color);
}

.login-field {
    margin-bottom: 16px;
    text-align: left;
}

.login-field label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 6px;
}

.login-success {
    background: #eafaf1;
    color: #27ae60;
    padding: 12px 16px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 0.9rem;
    text-align: left;
}

.login-links {
    margin-top: 20px;
    padding-top: 16px;
    border-top: 1px solid var(--border-color);
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.login-links-divider {
    margin: 0 8px;
    color: var(--border-color);
}

.login-links a {
    color: var(--primary-color);
    font-weight: 600;
    transition: var(--transition);
}

.login-links a:hover {
    opacity: 0.8;
}

.login-divider {
    margin: 0 8px;
    color: var(--border-color);
}

.social-auth-divider {
    margin: 1rem 0;
    text-align: center;
    color: #7d8796;
    font-weight: 600;
}

.social-auth-btn {
    width: 100%;
    min-height: 50px;
    border-radius: 10px;
    border: 1px solid #d6dce6;
    background: linear-gradient(180deg, #ffffff 0%, #f5f8fb 100%);
    color: #2d3748;
    font-weight: 700;
    text-decoration: none;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    box-shadow: 0 2px 10px rgba(15, 23, 42, 0.06);
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.social-auth-btn + .social-auth-btn {
    margin-top: 10px;
}

.social-auth-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 10px 20px rgba(15, 23, 42, 0.12);
}

.social-auth-btn.google-btn {
    border-color: #d2e3fc;
}

.social-auth-btn.google-btn:hover {
    border-color: #4285f4;
    box-shadow: 0 10px 20px rgba(66, 133, 244, 0.18);
}

.social-auth-btn.microsoft-btn {
    border-color: #d9e2ec;
}

.social-auth-btn.microsoft-btn:hover {
    border-color: #5b708a;
    box-shadow: 0 10px 20px rgba(91, 112, 138, 0.18);
}

.social-google-icon {
    font-size: 1.25rem;
    font-weight: 800;
    line-height: 1;
    background: conic-gradient(from 0deg, #4285f4 0deg 90deg, #34a853 90deg 180deg, #fbbc05 180deg 270deg, #ea4335 270deg 360deg);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.social-ms-icon {
    width: 16px;
    height: 16px;
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2px;
}

.social-ms-icon span:nth-child(1) {
    background: #f25022;
}

.social-ms-icon span:nth-child(2) {
    background: #7fba00;
}

.social-ms-icon span:nth-child(3) {
    background: #00a4ef;
}

.social-ms-icon span:nth-child(4) {
    background: #ffb900;
}

.login-hint {
    display: block;
    margin-top: 4px;
    font-size: 0.78rem;
    color: var(--text-secondary);
}

/* Nav user section */
.nav-user {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 0.85rem;
}

.nav-user-info {
    display: flex;
    flex-direction: column;
    align-items: center;
    line-height: 1.2;
    gap: 2px;
    cursor: pointer;
}

a.nav-user-info:hover .nav-user-email {
    color: var(--primary-color);
}

.nav-user-email {
    color: var(--text-secondary);
    max-width: 160px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.nav-credits {
    font-size: 0.7rem;
    color: var(--primary-color);
    font-weight: 600;
}

.nav-running {
    font-size: 0.68rem;
    color: #2563eb;
    font-weight: 600;
}

.nav-plan-badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    vertical-align: middle;
    margin-left: 4px;
}

.nav-plan-badge.free {
    background: var(--border-color);
    color: var(--text-secondary);
}

.nav-plan-badge.pro {
    background: linear-gradient(135deg, #f39c12, #e67e22);
    color: white;
}

.nav-login-link,
.nav-logout-link {
    color: var(--primary-color);
    font-weight: 600;
    font-size: 0.85rem;
    transition: var(--transition);
}

.nav-login-link:hover,
.nav-logout-link:hover {
    opacity: 0.8;
}

/* ============== Subtitle Editor ============== */
.subtitle-editor {
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 1fr);
    gap: 1rem;
    margin: 0 auto 1.5rem;
    min-height: 400px;
    width: 100%;
    max-width: 1100px;
}

.subtitle-editor > * {
    min-width: 0;
}

.subtitle-editor-player {
    display: flex;
    flex-direction: column;
    gap: 0;
    min-width: 0;
    width: 100%;
}

.subtitle-editor-player video {
    width: 100%;
    border-radius: var(--radius) var(--radius) 0 0;
    background: #000;
}

.audio-player-wrapper {
    background: linear-gradient(135deg, #1e1e2e, #2d2d3f);
    border-radius: var(--radius) var(--radius) 0 0;
    padding: 2rem 1.5rem 1.5rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
}

.subtitle-editor-player .audio-player-wrapper {
    width: 100%;
    align-items: stretch;
    box-sizing: border-box;
}

.subtitle-editor-player-audio {
    --subtitle-audio-player-width: 560px;
}

.subtitle-editor-player-audio .audio-player-wrapper,
.subtitle-editor-player-audio .current-subtitle-display {
    width: var(--subtitle-audio-player-width);
    max-width: 100%;
    margin-left: auto;
    margin-right: auto;
}

.subtitle-editor-player .audio-player-wrapper .audio-player-icon {
    align-self: center;
}

.subtitle-editor-player .audio-player-wrapper audio {
    width: 100%;
    min-width: 0;
    display: block;
}

.audio-player-icon {
    font-size: 3rem;
    color: #d35400;
    opacity: 0.7;
}

.no-media-placeholder {
    background: #1e1e2e;
    border-radius: var(--radius) var(--radius) 0 0;
    padding: 3rem;
    text-align: center;
    color: #666;
}

.no-media-placeholder i {
    font-size: 2.5rem;
    margin-bottom: 0.75rem;
    display: block;
    opacity: 0.4;
}

.current-subtitle-display {
    background: #1a1a2e;
    border-radius: 0 0 var(--radius) var(--radius);
    padding: 0.75rem 1rem;
    min-height: 4.5rem;
    height: 4.5rem;
    width: 100%;
    box-sizing: border-box;
    display: flex;
    align-items: center;
    justify-content: center;
}

.current-subtitle-display span {
    display: block;
    color: #f1c40f;
    font-size: 0.95rem;
    font-weight: 500;
    text-align: center;
    line-height: 1.4;
    width: 100%;
    max-width: 100%;
    max-height: 100%;
    overflow-y: auto;
    white-space: pre-wrap;
    word-break: break-word;
    overflow-wrap: anywhere;
}

.subtitle-editor-list {
    display: flex;
    flex-direction: column;
    background: #fafbfc;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    overflow: hidden;
    min-width: 0;
}

.subtitle-editor-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.65rem 1rem;
    background: #2d2d3f;
    color: #cdd6f4;
    flex-shrink: 0;
}

.subtitle-editor-title {
    font-weight: 600;
    font-size: 0.9rem;
}

.subtitle-editor-title i {
    color: #d35400;
    margin-right: 0.3rem;
}

.subtitle-segment-count {
    font-size: 0.8rem;
    color: #888;
}

.subtitle-segments {
    flex: 1;
    overflow-y: auto;
    max-height: 520px;
    padding: 0.5rem;
}

.subtitle-segment {
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    padding: 0.5rem 0.6rem;
    margin-bottom: 0.35rem;
    transition: border-color 0.2s, background 0.2s;
}

.subtitle-segment:hover {
    background: #f0f4f8;
}

.subtitle-segment.active {
    border-color: #d35400;
    background: #fff8f0;
}

.segment-time {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.3rem;
    cursor: pointer;
    user-select: none;
}

.segment-time:hover .segment-timestamp {
    color: #d35400;
}

.segment-index {
    font-size: 0.7rem;
    color: #999;
    font-weight: 600;
    min-width: 2rem;
}

.segment-timestamp {
    font-size: 0.75rem;
    color: #666;
    font-family: 'Courier New', Courier, monospace;
    transition: color 0.2s;
}

.segment-text {
    width: 100%;
    border: 1px solid #e0e0e0;
    border-radius: 4px;
    padding: 0.4rem 0.5rem;
    font-size: 0.85rem;
    font-family: inherit;
    line-height: 1.4;
    resize: none;
    background: #fff;
    color: var(--text-color);
    transition: border-color 0.2s;
    min-height: 2.25rem;
    overflow: hidden;
    white-space: pre-wrap;
    overflow-wrap: anywhere;
}

.segment-text:focus {
    outline: none;
    border-color: #d35400;
    box-shadow: 0 0 0 2px rgba(211, 84, 0, 0.1);
}

.subtitle-editor-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.65rem 1rem;
    border-top: 1px solid var(--border-color);
    background: #fff;
    flex-shrink: 0;
}

.subtitle-save-btn {
    background: #d35400;
    color: #fff;
    border: none;
    border-radius: var(--radius-sm);
    padding: 0.5rem 1.2rem;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s, opacity 0.2s;
}

.subtitle-save-btn:hover:not(:disabled) {
    background: #b84500;
}

.subtitle-save-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.subtitle-save-status {
    font-size: 0.8rem;
    font-weight: 500;
}

.subtitle-save-status.unsaved { color: #e67e22; }
.subtitle-save-status.saving { color: #3498db; }
.subtitle-save-status.saved { color: #27ae60; }
.subtitle-save-status.error { color: #e74c3c; }

@media (max-width: 768px) {
    .subtitle-editor {
        grid-template-columns: 1fr;
    }
    .subtitle-segments {
        max-height: 300px;
    }
}

/* ==================== Account Page ==================== */
.account-page { padding: 40px 0 60px; }

.account-page .container {
    max-width: 1100px !important;
}

/* Hero / profile section */
.account-hero {
    text-align: center;
    padding: 36px 20px 28px;
    background: linear-gradient(135deg, #f0faf4 0%, #e8f5e9 100%);
    border-radius: 16px;
    margin-bottom: 24px;
}

.account-avatar {
    width: 72px;
    height: 72px;
    border-radius: 50%;
    background: var(--primary-color);
    color: #fff;
    font-size: 2rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 14px;
    box-shadow: 0 4px 14px rgba(39,174,96,.25);
}

.account-plan-badge {
    display: inline-block;
    padding: 4px 14px;
    border-radius: 20px;
    font-size: .8rem;
    font-weight: 700;
}
.account-plan-badge.pro {
    background: var(--primary-color);
    color: #fff;
}
.account-plan-badge.free {
    background: #e8f5e9;
    color: var(--primary-color);
}

/* Stats row */
.account-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
    margin-bottom: 24px;
}

.account-stat {
    background: #fff;
    border-radius: 12px;
    padding: 18px 10px;
    text-align: center;
    box-shadow: 0 2px 10px rgba(0,0,0,.06);
}

.account-stat-value {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--primary-color);
}

.account-stat-label {
    font-size: .75rem;
    color: #999;
    margin-top: 4px;
    text-transform: uppercase;
    letter-spacing: .5px;
    font-weight: 600;
}

/* Card */
.account-card {
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 2px 12px rgba(0,0,0,.07);
    margin-bottom: 24px;
    overflow: hidden;
}

.account-card-header {
    background: #f8f9fa;
    padding: 14px 24px;
    font-weight: 600;
    font-size: .95rem;
    color: #555;
    border-bottom: 1px solid #eee;
}

.account-card-header i {
    margin-right: 8px;
    color: var(--primary-color);
}

.account-card-body {
    padding: 20px 24px;
}

.account-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
    border-bottom: 1px solid #f0f0f0;
}

.account-row:last-child {
    border-bottom: none;
}

.account-label {
    font-size: .9rem;
    color: #777;
}

.account-value {
    font-size: .95rem;
    color: #333;
    font-weight: 500;
}

.account-table-scroll {
    width: 100%;
    overflow-x: auto;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
}

.account-data-table {
    width: 100%;
    table-layout: fixed;
}

.account-col-created,
.account-col-expires {
    width: 120px;
    white-space: nowrap;
}

.account-col-size {
    width: 90px;
    white-space: nowrap;
}

.account-col-download {
    width: 120px;
    white-space: nowrap;
}

.account-col-download .account-action-btn {
    display: inline-flex;
    width: auto;
    min-width: 92px;
    flex: none;
}

.account-col-description {
    width: auto;
}

.account-table-scroll:focus {
    outline: 2px solid rgba(39, 174, 96, 0.35);
    outline-offset: -2px;
}

/* Usage bar */
.account-bar-track {
    background: #e8f5e9;
    border-radius: 8px;
    height: 12px;
    overflow: hidden;
}

.account-bar-fill {
    background: linear-gradient(90deg, var(--primary-color), #2ecc71);
    height: 100%;
    border-radius: 8px;
    width: 0%;
    transition: width .6s ease;
}

/* Action buttons */
.account-actions {
    display: flex;
    gap: 12px;
    margin-top: 4px;
}

.account-action-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 16px;
    border-radius: 10px;
    font-size: .9rem;
    font-weight: 600;
    text-decoration: none;
    transition: all .2s;
    cursor: pointer;
    border: none;
    background: var(--primary-color);
    color: #fff;
}

.account-action-btn:hover {
    opacity: .9;
    transform: translateY(-1px);
}

.account-action-btn.secondary {
    background: #f0f0f0;
    color: #555;
}

.account-action-btn.secondary:hover {
    background: #e0e0e0;
}

.account-action-btn.danger {
    background: #fff;
    color: #e74c3c;
    border: 1px solid #fdd;
}

.account-action-btn.danger:hover {
    background: #fef5f5;
}

@media (max-width: 768px) {
    .account-stats { grid-template-columns: repeat(2, 1fr); }
    .account-actions { flex-direction: column; }

    .account-data-table {
        min-width: 620px;
        table-layout: auto;
    }
}

@media (max-width: 600px) {
    .account-data-table {
        min-width: 620px;
    }
}