* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        :root {
            /* === ACCENT COLOR CONFIGURATION (Change here to customize theme) === */
            --accent-h: 250;
            --accent-s: 60%;
            --accent-l: 50%;

            /* === Material Design 3 Color Tokens === */
            /* Primary colors (derived from accent) */
            --md-primary: hsl(var(--accent-h), var(--accent-s), var(--accent-l));
            --md-primary-light: hsl(var(--accent-h), var(--accent-s), 65%);
            --md-primary-dark: hsl(var(--accent-h), var(--accent-s), 35%);
            --md-on-primary: #ffffff;
            --md-primary-container: hsl(var(--accent-h), 60%, 90%);
            --md-on-primary-container: hsl(var(--accent-h), 60%, 10%);

            /* Secondary colors */
            --md-secondary: hsl(calc(var(--accent-h) + 20), 40%, 50%);
            --md-secondary-light: hsl(calc(var(--accent-h) + 20), 40%, 60%);
            --md-on-secondary: #ffffff;
            --md-secondary-container: hsl(calc(var(--accent-h) + 20), 40%, 90%);

            /* Tertiary colors */
            --md-tertiary: hsl(calc(var(--accent-h) - 30), 45%, 55%);
            --md-on-tertiary: #ffffff;

            /* Success colors (green) */
            --md-success: #10b981;
            --md-success-light: #34d399;
            --md-success-dark: #059669;
            --md-on-success: #ffffff;
            --md-success-container: #d1fae5;
            --md-on-success-container: #064e3b;

            /* Error colors */
            --md-error: #ba1a1a;
            --md-error-light: #ef4444;
            --md-on-error: #ffffff;
            --md-error-container: #fef2f2;
            --md-on-error-container: #7f1d1d;

            /* Warning colors */
            --md-warning: #f59e0b;
            --md-warning-light: #fbbf24;
            --md-on-warning: #ffffff;
            --md-warning-container: #fff7ed;
            --md-on-warning-container: #b45309;

            /* Surface colors (backgrounds with slight primary tint) */
            --md-surface: #fef7ff;
            --md-surface-dim: #ded8e1;
            --md-surface-bright: #fef7ff;
            --md-surface-container-lowest: #ffffff;
            --md-surface-container-low: #f7f2fa;
            --md-surface-container: #f3edf7;
            --md-surface-container-high: #ece6f0;
            --md-surface-container-highest: #e6e0e9;
            --md-on-surface: #1c1b1f;
            --md-on-surface-variant: #49454f;

            /* Outline/borders */
            --md-outline: #79747e;
            --md-outline-variant: #cac4d0;

            /* Scrim (overlay) */
            --md-scrim: rgba(0, 0, 0, 0.32);

            /* State layers (hover/focus/press overlays) */
            --md-state-hover-opacity: 0.08;
            --md-state-focus-opacity: 0.12;
            --md-state-press-opacity: 0.12;
            --md-state-drag-opacity: 0.16;

            /* === Material Design 3 Elevation (shadows - light theme) === */
            --md-elevation-0: none;
            --md-elevation-1: 0px 1px 2px 0px rgba(0, 0, 0, 0.15), 0px 1px 3px 1px rgba(0, 0, 0, 0.1);
            --md-elevation-2: 0px 1px 2px 0px rgba(0, 0, 0, 0.2), 0px 2px 6px 2px rgba(0, 0, 0, 0.12);
            --md-elevation-3: 0px 4px 8px 3px rgba(0, 0, 0, 0.12), 0px 1px 3px 0px rgba(0, 0, 0, 0.2);
            --md-elevation-4: 0px 6px 10px 4px rgba(0, 0, 0, 0.12), 0px 2px 3px 0px rgba(0, 0, 0, 0.2);
            --md-elevation-5: 0px 8px 12px 6px rgba(0, 0, 0, 0.12), 0px 4px 4px 0px rgba(0, 0, 0, 0.2);

            /* === Material Design 3 Typography Scale === */
            --md-display-large: 57px;
            --md-display-medium: 45px;
            --md-display-small: 36px;
            --md-headline-large: 32px;
            --md-headline-medium: 28px;
            --md-headline-small: 24px;
            --md-title-large: 22px;
            --md-title-medium: 16px;
            --md-title-small: 14px;
            --md-body-large: 16px;
            --md-body-medium: 14px;
            --md-body-small: 12px;
            --md-label-large: 14px;
            --md-label-medium: 12px;
            --md-label-small: 11px;

            /* === Material Design 3 Shape (border-radius) === */
            --md-shape-corner-none: 0px;
            --md-shape-corner-xs: 4px;
            --md-shape-corner-sm: 8px;
            --md-shape-corner-md: 12px;
            --md-shape-corner-lg: 16px;
            --md-shape-corner-xl: 28px;
            --md-shape-corner-full: 9999px;
        }

        body {
            font-family: 'Source Sans 3', 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
            background:
                linear-gradient(135deg,
                    hsl(var(--accent-h), calc(var(--accent-s) * 0.8), 90%) 0%,
                    hsl(calc(var(--accent-h) - 10), calc(var(--accent-s) * 0.7), 93%) 50%,
                    hsl(var(--accent-h), calc(var(--accent-s) * 0.6), 95%) 100%
                );
            min-height: 100vh;
            padding: 2rem;
            display: flex;
            justify-content: center;
            align-items: flex-start;
            position: relative;
        }

        body::before {
            content: '';
            position: fixed;
            inset: 0;
            background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 400 400' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)' opacity='0.02'/%3E%3C/svg%3E");
            pointer-events: none;
            z-index: 1;
        }

        /* Old single-page layout - removed for wizard */
        /* .container, .page-hero, .layout-grid, .main-panel styles removed */

        .queue-column {
            position: relative;
        }

        .queue-controls {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
            gap: 0.75rem;
            margin-bottom: 1.5rem;
        }

        .queue-controls button {
            width: 100%;
        }

        .queue-actions {
            display: flex;
            gap: 0.75rem;
        }

h1 {
    color: var(--md-on-surface);
    margin: 0;
    font-size: clamp(2.4rem, 3.2vw, 3rem);
    font-weight: 700;
    letter-spacing: -0.025em;
}

h1 .headline-accent {
    display: inline-flex;
    align-items: center;
    padding: 0.15em 0.5em;
    border-radius: var(--md-shape-corner-full);
    background: var(--md-secondary-container);
    color: var(--md-primary-dark);
    font-size: 0.6em;
    font-weight: 600;
    margin-left: 0.45em;
    text-transform: uppercase;
    letter-spacing: 0.16em;
}

.subtitle {
    color: var(--md-on-surface-variant);
    margin: 0;
    font-size: clamp(1.05rem, 1.45vw, 1.2rem);
    line-height: 1.55;
    max-width: 980px;
}

        .upload-zone {
            min-height: 220px;
            border: 1.5px dashed #d8d1dc;
            border-radius: 18px;
            padding: 2.25rem 2rem;
            text-align: center;
            cursor: pointer;
            transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
            background: linear-gradient(160deg, #ffffff 0%, #f6f1fb 100%);
            display: grid;
            place-items: center;
            gap: 0.5rem;
            margin-bottom: 0;
            position: relative;
        }

        .upload-zone::before {
            content: '';
            position: absolute;
            inset: 0;
            border-radius: inherit;
            background: var(--md-primary);
            opacity: 0;
            transition: opacity 0.4s cubic-bezier(0.4, 0, 0.2, 1);
            pointer-events: none;
        }

        .upload-zone:hover::before {
            opacity: var(--md-state-hover-opacity);
        }

        .upload-zone:hover {
            border-color: var(--md-primary);
            transform: translateY(-2px) scale(1.01);
            box-shadow: 0 0 40px rgba(180, 168, 255, 0.25),
                        0 0 80px rgba(180, 168, 255, 0.15),
                        var(--md-elevation-2);
        }

        .upload-zone.drag-over {
            border-color: var(--md-primary);
            background: var(--md-primary-container);
            transform: scale(1.02);
            box-shadow: 0 0 60px rgba(180, 168, 255, 0.4),
                        0 0 120px rgba(180, 168, 255, 0.2),
                        var(--md-elevation-3);
        }

        .upload-zone.loading {
            pointer-events: none;
        }

        .upload-loading-overlay {
            position: absolute;
            inset: 0;
            border-radius: inherit;
            background: rgba(255, 255, 255, 0.8);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            display: none;
            align-items: center;
            justify-content: center;
            flex-direction: column;
            gap: 0.75rem;
            color: var(--md-on-surface);
            font-weight: 600;
            z-index: 2;
        }

        .upload-zone.loading .upload-loading-overlay {
            display: flex;
        }

        .upload-loading-spinner {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            border: 3px solid rgba(99, 102, 241, 0.15);
            border-top-color: var(--md-primary);
            animation: spinner 0.8s linear infinite;
        }

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

        .upload-icon {
            width: 44px;
            height: 44px;
            border-radius: 14px;
            background: #f0ecf9;
            display: grid;
            place-items: center;
            font-size: 1.4rem;
            color: var(--md-primary);
            margin-bottom: 0.5rem;
        }

        input[type="file"] {
            display: none;
        }

        .section-title {
            color: #3b3542;
            font-size: 0.8rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            line-height: 1rem;
            text-transform: uppercase;
            letter-spacing: 0.08em;
        }

        .section-subtitle {
            color: var(--md-on-surface);
            font-size: 0.9rem;
            font-weight: 600;
        }

        .section-header .section-title {
            margin-bottom: 0;
        }

        .section-header .section-subtitle {
            margin-bottom: 0;
        }

        .section-title::before {
            display: none;
        }

        /* Format Selection Cards */
        .section-header {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            margin-bottom: 1rem;
        }

        .format-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
            margin-bottom: 0.75rem;
            width: 100%;
        }

        .format-card {
            border: 1px solid #d9d3df;
            border-radius: 999px;
            padding: 0 0.9rem;
            cursor: pointer;
            transition: all 0.2s ease;
            text-align: center;
            background: #fff;
            display: inline-flex;
            align-items: center;
            min-height: 38px;
        }

        .format-card::before {
            display: none;
        }

        .format-card:hover {
            border-color: var(--md-primary);
        }

        .format-card.active {
            border-color: transparent;
            background: var(--md-primary);
            color: var(--md-on-primary);
            box-shadow: 0 6px 16px rgba(109, 91, 255, 0.25);
        }

        .format-card.active .format-name::after {
            content: ' ✓';
        }

        .format-icon {
            display: none;
        }

        .format-name {
            font-weight: 600;
            color: currentColor;
            font-size: 0.85rem;
        }

        .format-desc {
            display: none;
        }

        /* Quality Slider */
        .quality-control {
            margin: 0.75rem 0 2rem;
            padding: 1.5rem;
            background: var(--md-surface-container);
            border-radius: var(--md-shape-corner-md);
        }

        .quality-control.disabled {
            opacity: 0.6;
        }

        .quality-control.disabled input[type="range"] {
            pointer-events: none;
        }

        .quality-control.disabled .quality-value {
            background: var(--md-outline);
        }

        .quality-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 1rem;
        }

        .quality-label {
            color: var(--md-on-surface);
            font-weight: 600;
            font-size: 0.95rem;
        }

        .quality-value {
            background: var(--md-primary);
            color: var(--md-on-primary);
            padding: 0.25rem 0.75rem;
            border-radius: var(--md-shape-corner-full);
            font-weight: 600;
            font-size: 0.9rem;
        }

        input[type="range"] {
            width: 100%;
            height: 8px;
            border-radius: var(--md-shape-corner-xs);
            background: var(--md-surface-container-high);
            outline: none;
            -webkit-appearance: none;
            appearance: none;
        }

        input[type="range"]::-webkit-slider-thumb {
            -webkit-appearance: none;
            appearance: none;
            width: 20px;
            height: 20px;
            border-radius: 50%;
            background: var(--md-primary);
            cursor: pointer;
            box-shadow: var(--md-elevation-1);
        }

        input[type="range"]::-moz-range-thumb {
            width: 20px;
            height: 20px;
            border-radius: 50%;
            background: var(--md-primary);
            cursor: pointer;
            box-shadow: var(--md-elevation-1);
            border: none;
        }

        .quality-labels {
            display: flex;
            justify-content: space-between;
            margin-top: 0.5rem;
            font-size: 0.75rem;
            color: var(--md-on-surface-variant);
        }

        .metadata-checkbox-wrapper {
            margin-top: 1.25rem;
            padding-top: 1.25rem;
            border-top: 1px solid var(--md-outline-variant);
            transition: opacity 0.2s ease;
        }

        .metadata-checkbox-wrapper.disabled {
            opacity: 0.6;
            cursor: not-allowed;
        }

        .metadata-checkbox-wrapper.disabled .checkbox-label {
            cursor: not-allowed;
        }

        .metadata-note {
            margin-top: 0.5rem;
            margin-left: 2rem;
            font-size: 0.8rem;
            color: var(--md-on-surface-variant);
            line-height: 1.4;
        }

        /* Diagnostics Settings */
        .diagnostics-settings-wrapper {
            margin-top: 1.25rem;
            padding-top: 1.25rem;
            border-top: 1px solid var(--md-outline-variant);
        }

        .diagnostics-note {
            margin-top: 0.5rem;
            margin-left: 2rem;
            font-size: 0.8rem;
            color: var(--md-on-surface-variant);
            line-height: 1.4;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 0.5rem;
        }

        .diagnostics-info-link {
            background: none;
            border: none;
            color: var(--md-primary);
            font-size: 0.8rem;
            text-decoration: underline;
            cursor: pointer;
            padding: 0;
            transition: color 0.2s ease;
        }

        .diagnostics-info-link:hover,
        .diagnostics-info-link:focus {
            color: var(--md-primary-dark);
        }

        .checkbox-label {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            cursor: pointer;
            user-select: none;
        }

        .checkbox-label input[type="checkbox"] {
            position: absolute;
            opacity: 0;
            width: 0;
            height: 0;
        }

        .checkbox-custom {
            width: 20px;
            height: 20px;
            border: 2px solid var(--md-outline);
            border-radius: 4px;
            flex-shrink: 0;
            position: relative;
            transition: all 0.2s ease;
            background: var(--md-surface);
        }

        .checkbox-label:hover .checkbox-custom {
            border-color: var(--md-primary);
        }

        .checkbox-label input[type="checkbox"]:checked + .checkbox-custom {
            background: var(--md-primary);
            border-color: var(--md-primary);
        }

        .checkbox-label input[type="checkbox"]:checked + .checkbox-custom::after {
            content: '';
            position: absolute;
            left: 5px;
            top: 2px;
            width: 6px;
            height: 10px;
            border: solid white;
            border-width: 0 2px 2px 0;
            transform: rotate(45deg);
        }

        .checkbox-text {
            font-size: 0.9rem;
            color: var(--md-on-surface);
            line-height: 1.4;
        }

        /* Resize Options */
        .resize-section {
            margin-bottom: 2rem;
        }

        .resize-inputs-container {
            min-height: 250px;
            position: relative;
        }

        @media (max-width: 1100px) {
            .resize-inputs-container {
                min-height: auto;
            }
        }

        .resize-tabs {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 0.75rem;
            margin-bottom: 1rem;
        }

        .resize-tab {
            padding: 1rem;
            border: 2px solid var(--md-outline-variant);
            border-radius: var(--md-shape-corner-md);
            cursor: pointer;
            transition: all 0.3s ease;
            text-align: center;
            background: var(--md-surface-container-lowest);
            position: relative;
        }

        .resize-tab::before {
            content: '';
            position: absolute;
            inset: 0;
            border-radius: inherit;
            background: var(--md-primary);
            opacity: 0;
            transition: opacity 0.3s ease;
            pointer-events: none;
        }

        .resize-tab:hover::before {
            opacity: var(--md-state-hover-opacity);
        }

        .resize-tab:hover {
            border-color: var(--md-primary);
        }

        .resize-tab.active {
            border-color: var(--md-primary);
            background: var(--md-primary);
            color: var(--md-on-primary);
        }

        .resize-tab-icon {
            display: none;
        }

        .resize-tab-label {
            font-weight: 600;
            font-size: 0.9rem;
        }

        .resize-inputs {
            padding: 1.5rem;
            background: var(--md-surface-container);
            border-radius: var(--md-shape-corner-md);
            display: none;
        }

        .resize-inputs.active {
            display: block;
        }

        .resize-input-group {
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }

        .resize-input-group label {
            color: var(--md-on-surface);
            font-weight: 500;
            font-size: 0.9rem;
        }

        .resize-input-group input {
            padding: 0.75rem;
            border: 2px solid var(--md-outline-variant);
            border-radius: var(--md-shape-corner-sm);
            font-size: 1rem;
            transition: border-color 0.3s ease;
        }

        .resize-input-group input:focus {
            outline: none;
            border-color: var(--md-primary);
        }

        .modern-number-input {
            display: flex;
            align-items: stretch;
            border: 2px solid var(--md-outline-variant);
            border-radius: var(--md-shape-corner-md);
            background: var(--md-surface-container-lowest);
            transition: border-color 0.3s ease, box-shadow 0.3s ease;
            overflow: hidden;
        }

        .modern-number-input:focus-within {
            border-color: var(--md-primary);
            box-shadow: var(--md-elevation-1);
        }

        .modern-number-input input {
            border: none;
            padding: 0.75rem 1rem;
            font-size: 1rem;
            flex: 1;
            background: transparent;
        }

        .modern-number-input input:focus {
            outline: none;
        }

        .modern-input-addon {
            display: flex;
            align-items: center;
            padding: 0 1rem;
            background: var(--md-surface-container);
            font-weight: 600;
            color: var(--md-on-surface-variant);
        }

        .preset-label {
            margin-top: 1rem;
            font-size: 0.75rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: var(--md-on-surface-variant);
        }

        .preset-chips {
            margin-top: 0.75rem;
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
        }

        .preset-chip {
            border: 1px solid var(--md-outline-variant);
            background: var(--md-surface-container-lowest);
            color: var(--md-on-surface-variant);
            padding: 0.5rem 0.95rem;
            border-radius: var(--md-shape-corner-full);
            font-size: 0.85rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.25s ease;
            position: relative;
        }

        .preset-chip::before {
            content: '';
            position: absolute;
            inset: 0;
            border-radius: inherit;
            background: var(--md-primary);
            opacity: 0;
            transition: opacity 0.25s ease;
            pointer-events: none;
        }

        .preset-chip:hover::before {
            opacity: var(--md-state-hover-opacity);
        }

        .preset-chip:hover {
            border-color: var(--md-primary);
            color: var(--md-on-surface);
            box-shadow: var(--md-elevation-1);
            transform: translateY(-1px);
        }

        .preset-chip.active {
            background: var(--md-primary);
            color: var(--md-on-primary);
            border-color: transparent;
            box-shadow: var(--md-elevation-2);
        }

        button {
            padding: 1rem;
            border: none;
            border-radius: var(--md-shape-corner-xl);
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            position: relative;
            overflow: hidden;
        }

        button::before {
            content: '';
            position: absolute;
            inset: 0;
            background: currentColor;
            opacity: 0;
            transition: opacity 0.2s ease;
            pointer-events: none;
        }

        button:hover:not(:disabled)::before {
            opacity: var(--md-state-hover-opacity);
        }

        button:active:not(:disabled)::before {
            opacity: var(--md-state-press-opacity);
        }

        button:active:not(:disabled) {
            transform: scale(0.98);
        }

        #convertBtn {
            background: var(--md-primary);
            color: var(--md-on-primary);
            box-shadow: var(--md-elevation-1);
        }

        #convertBtn:hover:not(:disabled) {
            transform: translateY(-2px) scale(1.02);
            box-shadow: var(--md-elevation-2),
                        0 0 30px rgba(180, 168, 255, 0.3);
        }

        #convertBtn:disabled {
            opacity: 0.6;
            cursor: not-allowed;
        }

        #convertBtn.processing {
            opacity: 0.75;
            cursor: not-allowed;
            pointer-events: none;
        }

        #cancelBtn {
            padding: 1rem;
            border-radius: var(--md-shape-corner-xl);
            font-size: 1rem;
            font-weight: 600;
            border: 2px solid var(--md-primary);
            background: rgba(255, 255, 255, 0.9);
            color: var(--md-primary);
            box-shadow: var(--md-elevation-1);
        }

        #cancelBtn::before {
            background: var(--md-primary);
        }

        #cancelBtn:hover:not(:disabled) {
            transform: translateY(-2px) scale(1.02);
            box-shadow: var(--md-elevation-2),
                        0 0 30px rgba(180, 168, 255, 0.2);
            color: var(--md-on-primary);
        }

        #cancelBtn:disabled {
            opacity: 0.6;
            cursor: not-allowed;
            box-shadow: none;
        }

        #downloadAllBtn {
            background: var(--md-success);
            color: var(--md-on-success);
            box-shadow: var(--md-elevation-1);
            display: none;
        }

        #downloadAllBtn:hover:not(:disabled) {
            transform: translateY(-2px) scale(1.02);
            box-shadow: var(--md-elevation-2),
                        0 0 30px rgba(74, 222, 128, 0.3);
        }

        #downloadAllBtn.visible {
            display: block;
            animation: slideIn 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        @keyframes slideIn {
            from {
                opacity: 0;
                transform: translateY(-10px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* Savings Statistics */
        .savings-stats {
            display: none;
            margin-top: 1rem;
            padding: 1rem 1.25rem;
            border-radius: var(--md-shape-corner-md);
            background: var(--md-success-container);
            border: 1px solid rgba(16, 185, 129, 0.2);
        }

        .savings-stats.visible {
            display: block;
        }

        .savings-stats-title {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--md-on-success-container);
            margin-bottom: 0.75rem;
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }

        .savings-stats-grid {
            display: grid;
            grid-template-columns: repeat(2, minmax(0, 1fr));
            gap: 0.65rem;
        }

        @media (max-width: 600px) {
            .savings-stats-grid {
                grid-template-columns: 1fr;
            }
        }

        .savings-stat-item {
            background: var(--md-surface-container-lowest);
            padding: 0.6rem 0.5rem;
            border-radius: var(--md-shape-corner-sm);
            text-align: center;
        }

        .savings-stat-value {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--md-success-dark);
            display: block;
        }

        .savings-stat-label {
            font-size: 0.7rem;
            color: var(--md-on-success-container);
            margin-top: 0.15rem;
            display: block;
            font-weight: 500;
        }

        /* Queue Card */
        .queue-card {
            margin-top: 0;
            border-radius: var(--md-shape-corner-lg);
            border: 1px solid rgba(202, 196, 208, 0.3);
            background: rgba(255, 255, 255, 0.65);
            backdrop-filter: blur(16px) saturate(180%);
            -webkit-backdrop-filter: blur(16px) saturate(180%);
            box-shadow: var(--md-elevation-1);
            overflow: hidden;
        }

        .queue-header {
            padding: 1.5rem 2rem 1rem;
            display: flex;
            flex-direction: column;
            gap: 1rem;
            border-bottom: 1px solid var(--md-outline-variant);
        }

        .queue-header-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 1.5rem;
        }

        .queue-stats {
            display: grid;
            grid-auto-flow: column;
            gap: 1.25rem;
            font-size: 0.85rem;
            color: var(--md-on-surface);
        }

        .queue-stats strong {
            font-weight: 700;
            color: var(--md-primary-dark);
        }

        .queue-title {
            font-size: 1.15rem;
            font-weight: 600;
            color: var(--md-on-surface);
        }

        .queue-subtitle {
            font-size: 0.85rem;
            color: var(--md-on-surface-variant);
            margin-top: 0.25rem;
        }

        .queue-progress {
            display: block;
            padding: 0.5rem 0 0;
        }

        .queue-progress-bar {
            height: 8px;
            background: var(--md-surface-container-high);
            border-radius: var(--md-shape-corner-full);
            overflow: hidden;
            position: relative;
        }

        .queue-progress-fill {
            height: 100%;
            width: 0%;
            background: var(--md-primary);
            transition: width 0.3s ease;
        }

        .queue-progress-fill.complete {
            background: var(--md-success);
        }

        .queue-progress-label {
            margin-top: 0.35rem;
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--md-on-surface-variant);
            text-align: right;
        }

        .queue-body {
            padding: 1.75rem 2rem;
            background: var(--md-surface-container-low);
        }

        .queue-columns {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.5rem;
        }

        .queue-column {
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }

        .queue-status-title {
            font-size: 0.75rem;
            font-weight: 700;
            color: var(--md-on-surface-variant);
            text-transform: uppercase;
            letter-spacing: 0.08em;
            margin-top: 0.5rem;
        }

        .queue-file-row {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 1rem;
            padding: 0.75rem 0.85rem;
            border-radius: var(--md-shape-corner-md);
            border: 1px solid var(--md-outline-variant);
            background: var(--md-surface-container);
        }

        .queue-file-row.processing {
            background: var(--md-primary-container);
            border-color: var(--md-primary);
        }

        .queue-file-row.complete {
            background: var(--md-success-container);
            border-color: var(--md-success);
        }

        .queue-file-row.warning {
            background: var(--md-warning-container);
            border-color: var(--md-warning);
        }

        .queue-file-row.error {
            background: var(--md-error-container);
            border-color: var(--md-error);
        }

        .queue-file-main {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            min-width: 0;
        }

        .queue-file-thumb {
            width: 36px;
            height: 36px;
            border-radius: 10px;
            object-fit: cover;
            background: var(--md-surface-container-high);
            cursor: pointer;
            flex-shrink: 0;
        }

        .queue-file-meta {
            min-width: 0;
        }

        .queue-file-name {
            display: flex;
            align-items: center;
            gap: 0.35rem;
            font-weight: 600;
            font-size: 0.85rem;
            color: var(--md-on-surface);
            word-break: break-word;
        }

        .queue-file-details {
            display: flex;
            gap: 0.4rem;
            flex-wrap: wrap;
            font-size: 0.7rem;
            color: var(--md-on-surface-variant);
            margin-top: 0.15rem;
        }

        .queue-file-status {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.75rem;
            color: var(--md-on-surface-variant);
            white-space: nowrap;
        }

        .secondary-btn {
            background: var(--md-primary-container);
            border: none;
            color: var(--md-on-primary-container);
            padding: 0.55rem 1.2rem;
            border-radius: var(--md-shape-corner-md);
            cursor: pointer;
            font-weight: 500;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            position: relative;
            overflow: hidden;
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
        }

        .secondary-btn::before {
            content: '';
            position: absolute;
            inset: 0;
            background: var(--md-on-primary-container);
            opacity: 0;
            transition: opacity 0.2s ease;
            pointer-events: none;
        }

        .secondary-btn:hover:not(:disabled)::before {
            opacity: var(--md-state-hover-opacity);
        }

        .secondary-btn:hover:not(:disabled) {
            box-shadow: var(--md-elevation-1);
            transform: translateY(-2px) scale(1.02);
        }

        .secondary-btn:disabled {
            opacity: 0.5;
            cursor: not-allowed;
            box-shadow: none;
        }

        /* Files List */
        .files-list {
            margin-top: 0;
        }

        .upload-thumbs-grid {
            display: grid;
            grid-template-columns: repeat(6, 1fr);
            gap: 0.75rem;
        }

        .upload-thumb-card {
            display: flex;
            flex-direction: column;
            gap: 0.4rem;
        }

        .upload-thumb {
            position: relative;
            border-radius: var(--md-shape-corner-md);
            overflow: hidden;
            background: var(--md-surface-container);
            border: 1px solid var(--md-outline-variant);
        }

        .upload-thumb img {
            width: 100%;
            aspect-ratio: 1;
            object-fit: cover;
            display: block;
        }

        .upload-thumb-remove {
            position: absolute;
            top: 6px;
            left: 6px;
            width: 22px;
            height: 22px;
            border: none;
            border-radius: 999px;
            background: rgba(0, 0, 0, 0.6);
            color: #fff;
            font-size: 16px;
            cursor: pointer;
        }

        .thumb-info-btn {
            position: absolute;
            top: 6px;
            right: 6px;
            width: 22px;
            height: 22px;
            border-radius: 999px;
            border: none;
            background: rgba(255, 255, 255, 0.8);
            color: var(--md-on-surface);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
        }

        .thumb-info-btn svg {
            width: 12px;
            height: 12px;
            stroke: currentColor;
            stroke-width: 2;
            stroke-linecap: round;
            stroke-linejoin: round;
        }

        .upload-thumb-name {
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--md-on-surface);
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        .upload-thumb-meta {
            font-size: 0.75rem;
            color: var(--md-on-surface-variant);
        }

        @media (max-width: 1100px) {
            .upload-thumbs-grid {
                grid-template-columns: repeat(4, 1fr);
            }
        }

        @media (max-width: 700px) {
            .upload-thumbs-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }

        .files-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 1rem;
        }

        .status-group-separator {
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--md-outline-variant) 15%, var(--md-outline-variant) 85%, transparent);
            margin: 1.25rem 0;
            position: relative;
        }

        .status-group-separator::after {
            content: attr(data-label);
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            background: var(--md-surface-container-lowest);
            padding: 0 0.75rem;
            font-size: 0.7rem;
            font-weight: 600;
            color: var(--md-on-surface-variant);
            text-transform: uppercase;
            letter-spacing: 0.05em;
        }

        .file-item {
            --progress: 0%;
            position: relative;
            background: var(--md-surface-container);
            padding: 0.85rem 1.1rem;
            border-radius: var(--md-shape-corner-md);
            margin-bottom: 0.75rem;
            display: grid;
            grid-template-columns: 86px minmax(0, 1fr) auto;
            grid-template-rows: auto auto auto;
            grid-template-areas:
                "thumb name action"
                "thumb meta meta"
                "warning warning warning";
            gap: 0.4rem 0.9rem;
            align-items: start;
            transition: all 0.25s ease;
            border: 1px solid var(--md-outline-variant);
            overflow: hidden;
        }

        .file-item::before {
            content: '';
            position: absolute;
            inset: 0;
            background: var(--md-secondary-container);
            width: var(--progress);
            max-width: 100%;
            pointer-events: none;
            transition: width 0.25s ease;
        }

        .file-item:hover {
            transform: translateX(4px);
            box-shadow: var(--md-elevation-1);
        }

        .file-item.processing {
            background: var(--md-primary-container);
            border: 1px solid var(--md-primary);
            color: var(--md-on-primary-container);
        }

        .file-item.processing::before {
            background: var(--md-primary);
            opacity: 0.2;
        }

        .file-item.complete {
            background: var(--md-success-container);
            border: 1px solid var(--md-success);
        }

        .file-item.complete::before {
            background: var(--md-success);
            opacity: 0.2;
        }

        .file-item.error {
            background: var(--md-error-container);
            border: 1px solid var(--md-error);
        }

        .file-item.error::before {
            background: var(--md-error);
            opacity: 0.2;
        }

        .file-item.warning {
            background: var(--md-warning-container);
            border: 1px solid var(--md-warning);
        }

        .file-item.warning::before {
            background: var(--md-warning);
            opacity: 0.2;
        }

        .file-thumbnail {
            width: 70px;
            height: 70px;
            border-radius: var(--md-shape-corner-md);
            object-fit: cover;
            background: var(--md-surface-container-high);
            grid-area: thumb;
            justify-self: center;
            align-self: center;
            position: relative;
            z-index: 1;
            cursor: pointer;
            transition: transform 0.2s ease, box-shadow 0.2s ease;
        }

        .file-thumbnail:hover {
            transform: scale(1.05);
            box-shadow: var(--md-elevation-2);
        }

        .file-name {
            grid-area: name;
            font-weight: 600;
            color: var(--md-on-surface);
            width: 100%;
            word-break: break-word;
            position: relative;
            z-index: 1;
            align-self: center;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .file-info-icon {
            flex-shrink: 0;
            border: none;
            background: var(--md-secondary-container);
            color: var(--md-primary-dark);
            border-radius: var(--md-shape-corner-full);
            width: 20px;
            height: 20px;
            padding: 0;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: background 0.2s ease, transform 0.2s ease;
            position: relative;
            overflow: hidden;
        }

        .file-info-icon::before {
            content: '';
            position: absolute;
            inset: 0;
            background: var(--md-primary);
            opacity: 0;
            transition: opacity 0.2s ease;
            pointer-events: none;
        }

        .file-info-icon:hover::before,
        .file-info-icon:focus::before {
            opacity: var(--md-state-hover-opacity);
        }

        .file-info-icon svg {
            width: 12px;
            height: 12px;
            stroke: currentColor;
            stroke-width: 2;
            stroke-linecap: round;
            stroke-linejoin: round;
            position: relative;
            z-index: 1;
        }

        .file-details {
            grid-area: meta;
            display: flex;
            gap: 0.5rem;
            flex-wrap: wrap;
            row-gap: 0.35rem;
            font-size: 0.78rem;
            color: var(--md-on-surface-variant);
            align-items: center;
            width: 100%;
            position: relative;
            z-index: 1;
        }

        .file-detail-group {
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
            padding: 0.28rem 0.55rem;
            border-radius: var(--md-shape-corner-full);
            background: var(--md-secondary-container);
            color: var(--md-on-primary-container);
            font-weight: 600;
        }

        .file-detail-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.35rem;
            padding: 0.28rem 0.55rem;
            border-radius: var(--md-shape-corner-full);
            background: var(--md-primary-container);
            color: var(--md-on-primary-container);
            font-weight: 600;
        }

        .file-warning-message {
            display: block;
            width: 100%;
            margin-top: 0.35rem;
            padding: 0.4rem 0.55rem;
            border-radius: var(--md-shape-corner-sm);
            background: var(--md-warning-container);
            color: var(--md-on-warning-container);
            font-weight: 600;
            grid-area: warning;
            margin-bottom: 0.1rem;
            position: relative;
            z-index: 1;
        }

        .file-actions {
            grid-area: action;
            display: flex;
            align-items: center;
            justify-content: flex-end;
            position: relative;
            z-index: 1;
            align-self: center;
        }

        .file-action-btn {
            width: 36px;
            height: 36px;
            padding: 0;
            border-radius: var(--md-shape-corner-sm);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border: none;
            cursor: pointer;
            transition: all 0.2s ease;
            flex-shrink: 0;
            position: relative;
            overflow: hidden;
        }

        .file-action-btn::before {
            content: '';
            position: absolute;
            inset: 0;
            background: currentColor;
            opacity: 0;
            transition: opacity 0.2s ease;
            pointer-events: none;
        }

        .file-action-btn:hover::before {
            opacity: var(--md-state-hover-opacity);
        }

        .file-action-btn svg {
            width: 20px;
            height: 20px;
            position: relative;
            z-index: 1;
        }

        .file-action-btn.download {
            background: var(--md-success);
            color: var(--md-on-success);
            box-shadow: var(--md-elevation-1);
        }

        .file-action-btn.download:hover {
            transform: translateY(-2px);
            box-shadow: var(--md-elevation-2);
        }

        .file-action-btn.remove {
            background: var(--md-surface-container-lowest);
            border: 1.5px solid var(--md-outline-variant);
            color: var(--md-on-surface-variant);
        }

        .file-action-btn.remove:hover {
            background: var(--md-surface-container);
            border-color: var(--md-outline);
            color: var(--md-on-surface);
            transform: translateY(-2px);
        }

        .app-footer {
            margin-top: 3rem;
            padding-top: 1.5rem;
            border-top: 1px solid var(--md-outline-variant);
            color: var(--md-on-surface-variant);
            font-size: 0.85rem;
        }

        .footer-inner {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.75rem;
        }

.footer-language {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.language-switcher-btn {
    border: none;
    background: none;
    color: var(--md-primary);
    font-weight: 600;
    cursor: pointer;
    padding: 0;
    text-decoration: underline transparent;
    transition: color 0.2s ease, text-decoration-color 0.2s ease;
    font-size: 1em;
}

        .language-switcher-btn:hover,
        .language-switcher-btn:focus {
            color: var(--md-primary-dark);
            text-decoration-color: currentColor;
        }


        .footer-brand a {
            color: inherit;
            text-decoration: none;
        }

        .footer-brand a:hover {
            text-decoration: underline;
        }

        .footer-build {
            font-variant-numeric: tabular-nums;
            background: var(--md-secondary-container);
            color: var(--md-primary-dark);
            padding: 0.25rem 0.6rem;
            border-radius: var(--md-shape-corner-full);
            font-weight: 600;
        }

        .footer-license-link {
            color: var(--md-primary);
            text-decoration: none;
            font-size: 0.8rem;
            transition: color 0.2s ease, text-decoration-color 0.2s ease;
        }

        .footer-license-link:hover,
        .footer-license-link:focus {
            color: var(--md-primary-dark);
            text-decoration: underline;
        }


        .info-button {
            border: none;
            background: var(--md-secondary-container);
            color: var(--md-primary-dark);
            border-radius: var(--md-shape-corner-full);
            width: 26px;
            height: 26px;
            padding: 0;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: background 0.2s ease, transform 0.2s ease;
            flex-shrink: 0;
            vertical-align: middle;
            position: relative;
            overflow: hidden;
        }

        .info-button::before {
            content: '';
            position: absolute;
            inset: 0;
            background: var(--md-primary);
            opacity: 0;
            transition: opacity 0.2s ease;
            pointer-events: none;
        }

        .info-button:hover::before,
        .info-button:focus::before {
            opacity: var(--md-state-hover-opacity);
        }

        .info-button svg {
            width: 16px;
            height: 16px;
            stroke: currentColor;
            stroke-width: 2;
            stroke-linecap: round;
            stroke-linejoin: round;
            position: relative;
            z-index: 1;
        }

        .info-button:hover,
        .info-button:focus {
            transform: translateY(-1px);
        }

        .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;
        }

        .modal {
            position: fixed;
            inset: 0;
            display: none;
            align-items: center;
            justify-content: center;
            z-index: 1000;
        }

        .modal.open {
            display: flex;
        }

        .modal-backdrop {
            position: fixed;
            inset: 0;
            background: var(--md-scrim);
            backdrop-filter: blur(8px) saturate(120%);
            -webkit-backdrop-filter: blur(8px) saturate(120%);
            animation: fadeIn 0.2s ease-out;
        }

        @keyframes fadeIn {
            from {
                opacity: 0;
            }
            to {
                opacity: 1;
            }
        }

        @keyframes scaleIn {
            from {
                opacity: 0;
                transform: scale(0.9);
            }
            to {
                opacity: 1;
                transform: scale(1);
            }
        }

        .modal-dialog {
            position: relative;
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(24px) saturate(180%);
            -webkit-backdrop-filter: blur(24px) saturate(180%);
            border: 1px solid rgba(255, 255, 255, 0.7);
            border-radius: var(--md-shape-corner-lg);
            padding: 1.75rem;
            max-width: 560px;
            width: calc(100% - 2rem);
            box-shadow: var(--md-elevation-5),
                        0 0 60px rgba(102, 126, 234, 0.15);
            z-index: 1;
            animation: scaleIn 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        .modal-title {
            margin: 0;
            font-size: 1.25rem;
            font-weight: 600;
            color: var(--md-on-surface);
        }

        .modal-close {
            position: absolute;
            top: 0.75rem;
            right: 0.75rem;
            border: none;
            background: transparent;
            color: var(--md-on-surface-variant);
            font-size: 1.5rem;
            line-height: 1;
            cursor: pointer;
            padding: 0.25rem;
            border-radius: var(--md-shape-corner-sm);
            transition: background 0.2s ease, color 0.2s ease;
        }

        .modal-close:hover,
        .modal-close:focus {
            background: var(--md-secondary-container);
            color: var(--md-primary-dark);
        }

        .modal-body {
            margin-top: 1rem;
            color: var(--md-on-surface-variant);
            font-size: 0.95rem;
            line-height: 1.55;
        }

        .modal-body ul {
            padding-left: 1.25rem;
            margin: 0.5rem 0 1rem;
        }

        .modal-body li + li {
            margin-top: 0.35rem;
        }

        body.modal-open {
            overflow: hidden;
        }

        .modal-dialog.modal-dialog--wide {
            max-width: 820px;
        }

        .privacy-modal__body {
            max-height: min(70vh, 560px);
            overflow: auto;
            padding-right: 0.25rem;
        }

        .privacy-modal__meta {
            margin: 0 0 1rem;
            color: #8c8791;
            font-size: 0.85rem;
        }

        .privacy-modal__section {
            background: var(--wizard-card);
            border: 1px solid var(--wizard-line);
            border-radius: 14px;
            padding: 1rem 1.25rem;
            box-shadow: var(--wizard-shadow);
        }

        .privacy-modal__section + .privacy-modal__section {
            margin-top: 0.85rem;
        }

        .privacy-modal__section h3 {
            margin: 0 0 0.5rem;
            font-size: 1rem;
            color: var(--md-on-surface);
        }

        .privacy-modal__section p,
        .privacy-modal__section li {
            font-size: 0.9rem;
            color: #5b5563;
            line-height: 1.6;
        }

        .privacy-modal__section ul {
            margin: 0;
            padding-left: 1.25rem;
        }

        .privacy-modal__section li + li {
            margin-top: 0.35rem;
        }

        /* Diagnostics Opt-In Modal */
        .modal-dialog-center {
            display: flex;
            flex-direction: column;
            justify-content: center;
            max-width: 500px;
        }

        .diagnostics-optin-highlights {
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
            margin: 1.5rem 0;
            padding: 1rem;
            background: var(--md-surface-container);
            border-radius: var(--md-shape-corner-sm);
        }

        .highlight-item {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            font-size: 0.95rem;
        }

        .highlight-icon {
            font-size: 1.25rem;
            flex-shrink: 0;
        }

        .diagnostics-optin-actions {
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
            margin-top: 1.5rem;
        }

        .diagnostics-optin-actions .btn {
            width: 100%;
            padding: 0.75rem 1.5rem;
            border: none;
            border-radius: var(--md-shape-corner-sm);
            font-size: 1rem;
            font-weight: 500;
            cursor: pointer;
            transition: all 0.2s ease;
        }

        .diagnostics-optin-actions .btn-primary {
            background: var(--md-primary);
            color: var(--md-on-primary);
        }

        .diagnostics-optin-actions .btn-primary:hover {
            background: var(--md-primary-dark);
            transform: translateY(-1px);
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
        }

        .diagnostics-optin-actions .btn-secondary {
            background: var(--md-surface-container-high);
            color: var(--md-on-surface);
        }

        .diagnostics-optin-actions .btn-secondary:hover {
            background: var(--md-surface-container-highest);
        }

        /* Diagnostics Privacy Modal */
        .diagnostics-privacy-intro {
            margin-bottom: 1.5rem;
            padding: 1rem;
            background: var(--md-primary-container);
            border-radius: var(--md-shape-corner-sm);
            color: var(--md-on-primary-container);
        }

        .diagnostics-privacy-section {
            margin: 1.25rem 0;
        }

        .diagnostics-privacy-section strong {
            display: block;
            margin-bottom: 0.5rem;
            font-size: 1rem;
            color: var(--md-on-surface);
        }

        .diagnostics-privacy-section ul {
            margin-top: 0.5rem;
        }

        .diagnostics-privacy-section li {
            margin-left: 1.25rem;
            padding-left: 0.25rem;
        }

        .diagnostics-privacy-example {
            margin: 1.5rem 0;
        }

        .diagnostics-privacy-example details {
            background: var(--md-surface-container);
            border-radius: var(--md-shape-corner-sm);
            padding: 0.75rem;
            cursor: pointer;
        }

        .diagnostics-privacy-example summary {
            font-weight: 500;
            color: var(--md-primary);
            list-style: none;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .diagnostics-privacy-example summary::-webkit-details-marker {
            display: none;
        }

        .diagnostics-privacy-example summary::before {
            content: '▶';
            display: inline-block;
            transition: transform 0.2s ease;
        }

        .diagnostics-privacy-example details[open] summary::before {
            transform: rotate(90deg);
        }

        .diagnostics-example-payload {
            margin-top: 0.75rem;
            padding: 0.75rem;
            background: var(--md-surface-container-high);
            border-radius: var(--md-shape-corner-xs);
            overflow-x: auto;
        }

        .diagnostics-example-payload pre {
            margin: 0;
            font-family: 'Monaco', 'Menlo', 'Consolas', monospace;
            font-size: 0.8rem;
            line-height: 1.4;
            color: var(--md-on-surface);
            white-space: pre-wrap;
            word-wrap: break-word;
        }

        .diagnostics-privacy-footer {
            margin-top: 1.5rem;
            padding: 1rem;
            background: var(--md-surface-container);
            border-radius: var(--md-shape-corner-sm);
            text-align: center;
            font-style: italic;
            color: var(--md-on-surface-variant);
        }

        /* Image Viewer Modal */
        .image-viewer-modal .modal-backdrop {
            background: rgba(0, 0, 0, 0.9);
        }

        .image-viewer-container {
            position: relative;
            width: 90vw;
            max-width: 1200px;
            height: 90vh;
            display: flex;
            flex-direction: column;
            z-index: 1;
        }

        .image-viewer-header {
            padding: 1rem 0 0.5rem;
            text-align: center;
        }

        .image-viewer-title {
            color: white;
            font-size: 1.1rem;
            font-weight: 500;
        }

        .image-viewer-content {
            flex: 1;
            display: flex;
            align-items: center;
            gap: 1rem;
            min-height: 0;
        }

        .image-viewer-image-wrapper {
            flex: 1;
            display: flex;
            align-items: center;
            justify-content: center;
            min-height: 0;
            position: relative;
        }

        .image-viewer-image-wrapper img {
            max-width: 100%;
            max-height: calc(90vh - 4rem);
            object-fit: contain;
            border-radius: var(--md-shape-corner-md);
            transition: opacity 0.2s ease;
        }

        .image-viewer-image-wrapper.loading img {
            opacity: 0;
        }

        .image-viewer-loading-spinner {
            position: absolute;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            border: 4px solid rgba(255, 255, 255, 0.2);
            border-top-color: white;
            animation: spinner 0.8s linear infinite;
            opacity: 0;
            pointer-events: none;
            transition: opacity 0.2s ease;
        }

        .image-viewer-image-wrapper.loading .image-viewer-loading-spinner {
            opacity: 1;
        }

        .image-viewer-nav {
            background: rgba(255, 255, 255, 0.15);
            border: 1px solid rgba(255, 255, 255, 0.3);
            border-radius: var(--md-shape-corner-full);
            color: white;
            width: 48px;
            height: 48px;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all 0.2s ease;
            flex-shrink: 0;
        }

        .image-viewer-nav:hover:not(:disabled) {
            background: rgba(255, 255, 255, 0.25);
            transform: scale(1.1);
        }

        .image-viewer-nav:disabled {
            opacity: 0.3;
            cursor: not-allowed;
        }

        .image-viewer-nav svg {
            width: 24px;
            height: 24px;
        }

        .image-viewer-modal .modal-close {
            color: white;
            z-index: 2;
        }

        .image-viewer-modal .modal-close:hover,
        .image-viewer-modal .modal-close:focus {
            background: rgba(255, 255, 255, 0.2);
            color: white;
        }

        /* Feedback Form */
        .feedback-form-group {
            margin-bottom: 1.25rem;
        }

        .feedback-form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 500;
            color: var(--md-on-surface);
        }

        .feedback-form-group input,
        .feedback-form-group select,
        .feedback-form-group textarea {
            width: 100%;
            padding: 0.625rem 0.875rem;
            border: 1px solid var(--md-outline);
            border-radius: var(--md-shape-corner-sm);
            font-family: inherit;
            font-size: 0.95rem;
            background: var(--md-surface);
            color: var(--md-on-surface);
            transition: border-color 0.2s ease;
        }

        .feedback-form-group input:focus,
        .feedback-form-group select:focus,
        .feedback-form-group textarea:focus {
            outline: none;
            border-color: var(--md-primary);
        }

        .feedback-form-group textarea {
            resize: vertical;
            min-height: 100px;
        }

        .feedback-status {
            margin: 1rem 0;
            padding: 0.75rem 1rem;
            border-radius: var(--md-shape-corner-sm);
            font-size: 0.9rem;
            display: none;
        }

        .feedback-status.success {
            display: block;
            background: var(--md-success-container);
            color: var(--md-on-success-container);
            border: 1px solid var(--md-success);
        }

        .feedback-status.error {
            display: block;
            background: var(--md-error-container);
            color: var(--md-on-error-container);
            border: 1px solid var(--md-error);
        }

        .feedback-form-actions {
            display: flex;
            gap: 0.75rem;
            justify-content: flex-end;
            margin-top: 1.5rem;
        }

        .primary-btn {
            background: var(--md-primary);
            color: white;
            border: none;
            padding: 0.625rem 1.5rem;
            border-radius: var(--md-shape-corner-sm);
            font-weight: 500;
            cursor: pointer;
            transition: background 0.2s ease;
        }

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

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

        /* Feedback FAB */
        .feedback-fab {
            position: fixed;
            bottom: 24px;
            right: 24px;
            width: 56px;
            height: 56px;
            border-radius: 16px;
            background: var(--md-primary);
            color: white;
            border: none;
            box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2), 0 6px 20px rgba(0, 0, 0, 0.19);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            z-index: 999;
        }

        .feedback-fab:hover {
            background: var(--md-primary-dark);
            box-shadow: 0 6px 12px rgba(0, 0, 0, 0.25), 0 8px 24px rgba(0, 0, 0, 0.22);
            transform: scale(1.05);
        }

        .feedback-fab:active {
            transform: scale(0.95);
        }

        .feedback-fab svg {
            width: 24px;
            height: 24px;
        }

        @media (max-width: 768px) {
            .feedback-fab {
                bottom: 16px;
                right: 16px;
                width: 48px;
                height: 48px;
                border-radius: 12px;
            }

            .feedback-fab svg {
                width: 20px;
                height: 20px;
            }
        }

        .empty-state {
            text-align: center;
            padding: 3rem 1rem;
            color: var(--md-on-surface-variant);
        }

        .info-banner {
            position: fixed;
            left: 50%;
            top: 24px;
            transform: translate(-50%, -150%);
            background: var(--md-surface-container);
            border: 1px solid var(--md-outline-variant);
            border-left-width: 4px;
            border-radius: var(--md-shape-corner-md);
            padding: 0.85rem 1rem;
            font-size: 0.9rem;
            color: var(--md-on-surface);
            box-shadow: var(--md-elevation-3);
            max-width: min(540px, calc(100% - 32px));
            width: calc(100% - 32px);
            z-index: 2000;
            pointer-events: none;
            opacity: 0;
            transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }

        .info-banner.show {
            transform: translate(-50%, 0);
            opacity: 1;
            pointer-events: auto;
        }

        .info-banner.info {
            background: var(--md-primary-container);
            border-color: var(--md-primary);
            color: var(--md-on-primary-container);
        }

        .info-banner.error {
            background: var(--md-error-container);
            border-color: var(--md-error);
            color: var(--md-on-error-container);
        }

        .info-banner.success {
            background: var(--md-success-container);
            border-color: var(--md-success);
            color: var(--md-on-success-container);
        }

        .info-banner.warning {
            background: var(--md-warning-container);
            border-color: var(--md-warning);
            color: var(--md-on-warning-container);
        }

        .info-banner strong {
            display: block;
            margin-bottom: 0.25rem;
        }

        .info-banner-content {
            display: flex;
            flex: 1;
            align-items: center;
            gap: 0.75rem;
        }

        .info-banner-text {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            flex: 1;
        }

        .info-banner-icon {
            font-size: 1.25rem;
        }

        .info-banner-actions {
            display: flex;
            gap: 0.5rem;
            flex-wrap: wrap;
        }

        .info-banner-btn {
            border: none;
            border-radius: 999px;
            padding: 0.4rem 0.9rem;
            font-size: 0.85rem;
            font-weight: 600;
            cursor: pointer;
            transition: transform 0.2s ease, opacity 0.2s ease;
        }

        .info-banner-btn.primary {
            background: var(--md-on-primary);
            color: var(--md-primary);
        }

        .info-banner-btn.secondary {
            background: var(--md-primary-container);
            color: var(--md-on-primary-container);
        }

        .info-banner-btn:hover {
            transform: translateY(-1px);
        }

        .info-banner-close {
            background: none;
            border: none;
            color: inherit;
            font-size: 1.2rem;
            cursor: pointer;
            padding: 0.25rem;
            border-radius: 50%;
            opacity: 0.7;
            transition: opacity 0.2s ease, transform 0.2s ease;
        }

        .info-banner-close:hover {
            opacity: 1;
            transform: scale(1.05);
        }

        @media (max-width: 768px) {
            .info-banner {
                flex-direction: column;
                align-items: flex-start;
            }

            .info-banner-content {
                flex-direction: column;
                align-items: flex-start;
                width: 100%;
            }

            .info-banner-actions {
                width: 100%;
                justify-content: flex-start;
            }
        }

        @media (max-width: 1100px) {
            /* Old .layout-grid media query removed for wizard */

            .queue-column {
                margin-top: 2rem;
            }
        }

        @media (max-width: 768px) {
            .resize-tabs {
                grid-template-columns: 1fr;
            }

            .queue-controls {
                grid-template-columns: 1fr;
            }
        }

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

        :root {
            --wizard-card: #fbf8f4;
            --wizard-line: #e4dee7;
            --wizard-shadow: 0 12px 30px rgba(30, 20, 60, 0.08);
        }

        .seo-about {
            margin: 2rem auto 0;
            max-width: 920px;
            text-align: center;
            color: #6d6a73;
            padding: 0 1rem;
        }

        .seo-about__title {
            font-size: 1rem;
            font-weight: 600;
            color: var(--md-on-surface);
            margin-bottom: 0.5rem;
        }

        .seo-about__text {
            font-size: 0.85rem;
            line-height: 1.6;
            margin: 0;
        }

        .seo-how,
        .seo-faq {
            margin: 1.75rem auto 0;
            max-width: 920px;
            padding: 0 1rem;
            color: #6d6a73;
        }

        .seo-how__title,
        .seo-faq__title {
            font-size: 1rem;
            font-weight: 600;
            color: var(--md-on-surface);
            margin-bottom: 0.75rem;
        }

        .seo-how__list {
            margin: 0;
            padding-left: 1.25rem;
            font-size: 0.9rem;
            line-height: 1.65;
        }

        .seo-how__list li + li {
            margin-top: 0.35rem;
        }

        .seo-faq__items {
            display: grid;
            gap: 0.75rem;
        }

        .seo-faq__item {
            background: var(--wizard-card);
            border: 1px solid var(--wizard-line);
            border-radius: 14px;
            padding: 0.85rem 1rem;
            box-shadow: var(--wizard-shadow);
        }

        .seo-faq__item summary {
            cursor: pointer;
            list-style: none;
            font-weight: 650;
            color: var(--md-on-surface);
        }

        .seo-faq__item summary::-webkit-details-marker {
            display: none;
        }

        .seo-faq__answer {
            margin-top: 0.55rem;
            font-size: 0.9rem;
            line-height: 1.6;
        }

        .seo-faq__answer a {
            color: var(--md-primary);
            text-decoration: none;
            font-weight: 600;
        }

        .seo-faq__answer a:hover {
            text-decoration: underline;
        }

        .site-footer .footer-main {
            display: inline-block;
        }

        .site-footer .footer-action {
            background: none;
            border: 0;
            padding: 0;
            margin: 0;
            border-radius: 0;
            color: var(--md-primary);
            font: inherit;
            line-height: inherit;
            cursor: pointer;
            box-shadow: none;
            position: static;
            overflow: visible;
        }

        .site-footer .footer-action::before {
            display: none;
        }

        .site-footer .footer-action:hover,
        .site-footer .footer-action:focus {
            text-decoration: underline;
        }

        .site-footer .footer-links {
            margin-top: 0.5rem;
            display: flex;
            flex-wrap: wrap;
            gap: 0.6rem;
            justify-content: center;
        }