/**
 * Online File Converter - Digital Atelier
 * Design System: Warm & Professional
 * Colors: Amber/Orange + Teal/Cyan + Coral
 * Fonts: Outfit (Heading), DM Sans (Body), JetBrains Mono (Code)
 */

/* === CSS Variables === */
:root {
    /* Color Palette - Warm & Professional */
    --fc-amber-50: #fffbeb;
    --fc-amber-100: #fef3c7;
    --fc-amber-200: #fde68a;
    --fc-amber-400: #fbbf24;
    --fc-amber-500: #f59e0b;
    --fc-amber-600: #d97706;
    --fc-orange-500: #f97316;
    --fc-orange-600: #ea580c;

    --fc-teal-50: #f0fdfa;
    --fc-teal-100: #ccfbf1;
    --fc-teal-500: #14b8a6;
    --fc-teal-600: #0d9488;
    --fc-cyan-500: #06b6d4;
    --fc-cyan-600: #0891b2;

    --fc-coral-400: #ff8787;
    --fc-coral-500: #ff6b6b;
    --fc-coral-600: #fa5252;

    /* Neutrals */
    --fc-gray-50: #f9fafb;
    --fc-gray-100: #f3f4f6;
    --fc-gray-200: #e5e7eb;
    --fc-gray-300: #d1d5db;
    --fc-gray-400: #9ca3af;
    --fc-gray-500: #6b7280;
    --fc-gray-600: #4b5563;
    --fc-gray-700: #374151;
    --fc-gray-800: #1f2937;
    --fc-gray-900: #111827;

    /* Spacing */
    --fc-space-1: 0.25rem;
    --fc-space-2: 0.5rem;
    --fc-space-3: 0.75rem;
    --fc-space-4: 1rem;
    --fc-space-5: 1.25rem;
    --fc-space-6: 1.5rem;
    --fc-space-8: 2rem;
    --fc-space-10: 2.5rem;
    --fc-space-12: 3rem;
    --fc-space-16: 4rem;

    /* Border Radius */
    --fc-radius-sm: 0.375rem;
    --fc-radius-md: 0.5rem;
    --fc-radius-lg: 0.75rem;
    --fc-radius-xl: 1rem;
    --fc-radius-2xl: 1.5rem;
    --fc-radius-full: 9999px;

    /* Shadows */
    --fc-shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --fc-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --fc-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --fc-shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --fc-shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);

    /* Transitions */
    --fc-transition-base: all 0.2s ease-in-out;
    --fc-transition-fast: all 0.15s ease-in-out;
    --fc-transition-slow: all 0.3s ease-in-out;
}

/* === Body Background (applies to entire page) === */
/* Keep body background as default white - no custom styling needed */

/* === Section Container === */
.file-converter-section {
    position: relative;
    padding: var(--fc-space-16) var(--fc-space-4);
    background: transparent;
    overflow: visible;
}

.file-converter-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 60%;
    height: 150%;
    background: radial-gradient(
        circle,
        rgba(245, 158, 11, 0.1) 0%,
        transparent 70%
    );
    pointer-events: none;
    animation: fc-float 20s ease-in-out infinite;
}

@keyframes fc-float {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    33% { transform: translate(-30px, -30px) rotate(5deg); }
    66% { transform: translate(30px, 30px) rotate(-5deg); }
}

.file-converter-container {
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

/* === Header Section === */
.converter-header {
    text-align: center;
    margin-bottom: var(--fc-space-12);
    animation: fc-fade-in-up 0.6s ease-out;
}

@keyframes fc-fade-in-up {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.converter-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--fc-space-2);
    padding: var(--fc-space-2) var(--fc-space-4);
    background: linear-gradient(
        135deg,
        var(--fc-amber-100) 0%,
        var(--fc-teal-100) 100%
    );
    border: 2px solid var(--fc-amber-200);
    border-radius: var(--fc-radius-full);
    font-family: 'DM Sans', sans-serif;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--fc-gray-700);
    margin-bottom: var(--fc-space-6);
    animation: fc-pulse 2s ease-in-out infinite;
}

@keyframes fc-pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.badge-icon {
    color: var(--fc-amber-600);
}

.converter-title {
    font-family: 'Outfit', sans-serif;
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 700;
    margin: 0 0 var(--fc-space-4) 0;
    line-height: 1.2;
}

.title-gradient {
    background: linear-gradient(
        135deg,
        var(--fc-amber-500) 0%,
        var(--fc-orange-500) 50%,
        var(--fc-teal-500) 100%
    );
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fc-gradient-shift 5s ease-in-out infinite;
    background-size: 200% 200%;
}

@keyframes fc-gradient-shift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.converter-subtitle {
    font-family: 'DM Sans', sans-serif;
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--fc-gray-600);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
}

/* === Main Converter Interface === */
.converter-interface {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--fc-space-6);
    margin-bottom: var(--fc-space-12);
}

@media (min-width: 768px) {
    .converter-interface {
        grid-template-columns: 1fr 1fr;
        gap: var(--fc-space-8);
    }

    .action-section {
        grid-column: 1 / -1;
    }
}

/* === Upload Card === */
.upload-card,
.format-card {
    background: white;
    border-radius: var(--fc-radius-2xl);
    padding: var(--fc-space-8);
    box-shadow: var(--fc-shadow-lg);
    transition: var(--fc-transition-base);
    position: relative;
    overflow: hidden;
    animation: fc-fade-in-up 0.8s ease-out 0.2s backwards;
    min-height: 550px;
    display: flex;
    flex-direction: column;
}

.upload-card::before,
.format-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(
        90deg,
        var(--fc-amber-500) 0%,
        var(--fc-teal-500) 100%
    );
}

.upload-card:hover,
.format-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--fc-shadow-2xl);
}

.upload-icon-wrapper {
    display: flex;
    justify-content: center;
    margin-bottom: var(--fc-space-4);
}

.upload-icon {
    color: var(--fc-amber-500);
    animation: fc-bounce 2s ease-in-out infinite;
}

@keyframes fc-bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

/* === File Drop Zone === */
.file-drop-zone {
    position: relative;
}

.file-input {
    position: absolute;
    width: 0;
    height: 0;
    opacity: 0;
    pointer-events: none;
}

.drop-zone-content {
    border: 3px dashed var(--fc-gray-300);
    border-radius: var(--fc-radius-xl);
    padding: var(--fc-space-10);
    text-align: center;
    transition: var(--fc-transition-base);
    background: var(--fc-gray-50);
}

.drop-zone-content:hover {
    border-color: var(--fc-amber-400);
    background: var(--fc-amber-50);
}

.drop-zone-content.drag-over {
    border-color: var(--fc-teal-500);
    background: var(--fc-teal-50);
    transform: scale(1.02);
    box-shadow: 0 0 0 4px rgba(20, 184, 166, 0.1);
}

.drop-zone-title {
    font-family: 'Outfit', sans-serif;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--fc-gray-800);
    margin: 0 0 var(--fc-space-2) 0;
}

.drop-zone-text {
    font-family: 'DM Sans', sans-serif;
    font-size: 0.875rem;
    color: var(--fc-gray-500);
    margin: var(--fc-space-3) 0;
}

.file-select-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--fc-space-2);
    padding: var(--fc-space-3) var(--fc-space-6);
    background: linear-gradient(
        135deg,
        var(--fc-amber-500) 0%,
        var(--fc-orange-500) 100%
    );
    color: white;
    border: none;
    border-radius: var(--fc-radius-lg);
    font-family: 'DM Sans', sans-serif;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--fc-transition-base);
    box-shadow: var(--fc-shadow-md);
}

.file-select-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--fc-shadow-xl);
    background: linear-gradient(
        135deg,
        var(--fc-amber-600) 0%,
        var(--fc-orange-600) 100%
    );
}

.file-select-btn:active {
    transform: translateY(0);
}

.drop-zone-hint {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem;
    color: var(--fc-gray-400);
    margin-top: var(--fc-space-3);
}

.drop-zone-formats-wrapper {
    margin-top: var(--fc-space-4);
    padding: var(--fc-space-3);
    background: white;
    border-radius: var(--fc-radius-lg);
    border: 1px solid var(--fc-gray-200);
}

.format-category {
    font-family: 'DM Sans', sans-serif;
    font-size: 0.75rem;
    color: var(--fc-gray-600);
    margin-bottom: var(--fc-space-2);
    display: flex;
    align-items: center;
    gap: var(--fc-space-2);
    line-height: 1.5;
}

.format-category:last-child {
    margin-bottom: 0;
}

.format-icon {
    font-size: 1rem;
    flex-shrink: 0;
}

.format-label {
    font-weight: 600;
    color: var(--fc-gray-700);
    flex-shrink: 0;
}

.format-list {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.7rem;
    color: var(--fc-gray-500);
}

/* === Selected Files Preview === */
.selected-files-preview {
    animation: fc-fade-in 0.3s ease-out;
}

@keyframes fc-fade-in {
    from { opacity: 0; }
    to { opacity: 1; }
}

.files-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--fc-space-4);
    padding-bottom: var(--fc-space-4);
    border-bottom: 2px solid var(--fc-gray-200);
}

.files-title {
    display: flex;
    align-items: center;
    gap: var(--fc-space-2);
    font-family: 'Outfit', sans-serif;
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--fc-gray-800);
    margin: 0;
}

.files-title svg {
    color: var(--fc-teal-500);
}

#file-count {
    color: var(--fc-amber-600);
    font-weight: 700;
}

.change-files-btn {
    padding: var(--fc-space-2) var(--fc-space-4);
    background: transparent;
    color: var(--fc-amber-600);
    border: 2px solid var(--fc-amber-200);
    border-radius: var(--fc-radius-md);
    font-family: 'DM Sans', sans-serif;
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--fc-transition-fast);
}

.change-files-btn:hover {
    background: var(--fc-amber-50);
    border-color: var(--fc-amber-400);
}

.files-list {
    list-style: none;
    padding: 0;
    margin: 0;
    max-height: 250px;
    overflow-y: auto;
}

.files-list::-webkit-scrollbar {
    width: 8px;
}

.files-list::-webkit-scrollbar-track {
    background: var(--fc-gray-100);
    border-radius: var(--fc-radius-md);
}

.files-list::-webkit-scrollbar-thumb {
    background: var(--fc-amber-400);
    border-radius: var(--fc-radius-md);
}

.files-list::-webkit-scrollbar-thumb:hover {
    background: var(--fc-amber-500);
}

.file-item {
    display: flex;
    align-items: center;
    gap: var(--fc-space-3);
    padding: var(--fc-space-3);
    background: var(--fc-gray-50);
    border-radius: var(--fc-radius-md);
    margin-bottom: var(--fc-space-2);
    animation: fc-slide-in 0.3s ease-out;
}

@keyframes fc-slide-in {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.file-item-icon {
    font-size: 1.5rem;
}

.file-item-info {
    flex: 1;
    min-width: 0;
}

.file-item-name {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.875rem;
    color: var(--fc-gray-800);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    margin: 0;
}

.file-item-size {
    font-family: 'DM Sans', sans-serif;
    font-size: 0.75rem;
    color: var(--fc-gray-500);
}

.file-item-remove {
    padding: var(--fc-space-1);
    background: transparent;
    color: var(--fc-gray-400);
    border: none;
    border-radius: var(--fc-radius-sm);
    cursor: pointer;
    transition: var(--fc-transition-fast);
}

.file-item-remove:hover {
    color: var(--fc-coral-500);
    background: var(--fc-gray-100);
}

/* === Format Selection === */
.format-header {
    display: flex;
    align-items: center;
    gap: var(--fc-space-4);
    margin-bottom: var(--fc-space-6);
}

.format-icon-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background: linear-gradient(
        135deg,
        var(--fc-teal-100) 0%,
        var(--fc-cyan-100) 100%
    );
    border-radius: var(--fc-radius-lg);
    animation: fc-spin 3s linear infinite;
}

@keyframes fc-spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.format-icon {
    color: var(--fc-teal-600);
}

.format-label {
    font-family: 'Outfit', sans-serif;
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--fc-gray-800);
}

.format-select-wrapper {
    position: relative;
}

.format-select {
    width: 100%;
    padding: var(--fc-space-4);
    background: var(--fc-gray-50);
    border: 2px solid var(--fc-gray-300);
    border-radius: var(--fc-radius-lg);
    font-family: 'DM Sans', sans-serif;
    font-size: 1rem;
    color: var(--fc-gray-800);
    cursor: pointer;
    transition: var(--fc-transition-base);
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg width='12' height='8' viewBox='0 0 12 8' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1L6 6L11 1' stroke='%236b7280' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    padding-right: 3rem;
}

.format-select:hover {
    border-color: var(--fc-teal-400);
    background: white;
}

.format-select:focus {
    outline: none;
    border-color: var(--fc-teal-500);
    box-shadow: 0 0 0 3px rgba(20, 184, 166, 0.1);
}

.format-select optgroup {
    font-family: 'Outfit', sans-serif;
    font-weight: 600;
    color: var(--fc-gray-700);
    padding: var(--fc-space-2);
}

.format-select option {
    font-family: 'DM Sans', sans-serif;
    padding: var(--fc-space-2);
}

.format-preview {
    display: flex;
    align-items: center;
    gap: var(--fc-space-4);
    margin-top: var(--fc-space-4);
    padding: var(--fc-space-4);
    background: linear-gradient(
        135deg,
        var(--fc-teal-50) 0%,
        var(--fc-cyan-50) 100%
    );
    border-radius: var(--fc-radius-lg);
    border: 2px solid var(--fc-teal-200);
}

.format-preview-icon {
    font-size: 2rem;
    animation: fc-rotate 0.5s ease-out;
}

@keyframes fc-rotate {
    from { transform: rotate(-180deg); }
    to { transform: rotate(0deg); }
}

.format-preview-text {
    flex: 1;
}

.format-preview-name {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1rem;
    font-weight: 600;
    color: var(--fc-teal-700);
}

/* === Convert Button === */
.action-section {
    text-align: center;
    animation: fc-fade-in-up 1s ease-out 0.4s backwards;
}

.convert-btn {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 280px;
    padding: var(--fc-space-5) var(--fc-space-10);
    background: linear-gradient(
        135deg,
        var(--fc-amber-500) 0%,
        var(--fc-orange-500) 50%,
        var(--fc-coral-500) 100%
    );
    background-size: 200% 200%;
    color: white;
    border: none;
    border-radius: var(--fc-radius-xl);
    font-family: 'Outfit', sans-serif;
    font-size: 1.25rem;
    font-weight: 700;
    cursor: pointer;
    transition: var(--fc-transition-base);
    box-shadow: var(--fc-shadow-xl);
    overflow: hidden;
}

.convert-btn-gradient {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        135deg,
        rgba(255, 255, 255, 0.2) 0%,
        transparent 50%,
        rgba(0, 0, 0, 0.1) 100%
    );
    pointer-events: none;
    transition: var(--fc-transition-slow);
}

.convert-btn:hover .convert-btn-gradient {
    transform: translateX(100%);
}

.convert-btn:hover {
    transform: translateY(-4px) scale(1.05);
    box-shadow: var(--fc-shadow-2xl);
    animation: fc-gradient-shift 2s ease-in-out infinite;
}

.convert-btn:active {
    transform: translateY(-2px) scale(1.03);
}

.convert-btn:disabled {
    background: #1e1b4b; /* 매우 어두운 인디고/네이비 */
    cursor: not-allowed;
    transform: none;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.convert-btn:disabled:hover {
    background: #0f0e27; /* 거의 검은색에 가까운 진한 보라 */
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(30, 27, 75, 0.5);
}

.convert-btn:disabled .convert-btn-gradient {
    display: none;
}

.convert-btn-content {
    position: relative;
    display: flex;
    align-items: center;
    gap: var(--fc-space-3);
    z-index: 1;
}

.convert-btn-icon {
    animation: fc-spin 2s linear infinite;
    animation-play-state: paused;
}

.convert-btn:hover .convert-btn-icon {
    animation-play-state: running;
}

/* === Feature Highlights === */
.converter-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--fc-space-6);
    margin-bottom: var(--fc-space-12);
}

.feature-item {
    text-align: center;
    padding: var(--fc-space-6);
    background: white;
    border-radius: var(--fc-radius-xl);
    box-shadow: var(--fc-shadow-md);
    transition: var(--fc-transition-base);
    animation: fc-fade-in-up 1s ease-out backwards;
}

.feature-item:nth-child(1) { animation-delay: 0.6s; }
.feature-item:nth-child(2) { animation-delay: 0.7s; }
.feature-item:nth-child(3) { animation-delay: 0.8s; }

.feature-item:hover {
    transform: translateY(-8px);
    box-shadow: var(--fc-shadow-xl);
}

.feature-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    background: linear-gradient(
        135deg,
        var(--fc-amber-100) 0%,
        var(--fc-teal-100) 100%
    );
    border-radius: var(--fc-radius-full);
    margin-bottom: var(--fc-space-4);
    color: var(--fc-teal-600);
}

.feature-title {
    font-family: 'Outfit', sans-serif;
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--fc-gray-800);
    margin: 0 0 var(--fc-space-2) 0;
}

.feature-desc {
    font-family: 'DM Sans', sans-serif;
    font-size: 0.875rem;
    color: var(--fc-gray-600);
    margin: 0;
    line-height: 1.5;
}

/* === Popular Formats === */
.popular-formats {
    text-align: center;
    padding: var(--fc-space-8);
    background: white;
    border-radius: var(--fc-radius-2xl);
    box-shadow: var(--fc-shadow-lg);
    animation: fc-fade-in-up 1.2s ease-out 0.8s backwards;
}

.popular-formats-title {
    display: inline-flex;
    align-items: center;
    gap: var(--fc-space-2);
    font-family: 'Outfit', sans-serif;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--fc-gray-800);
    margin: 0 0 var(--fc-space-6) 0;
}

.popular-formats-title svg {
    color: var(--fc-amber-500);
}

.popular-formats-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--fc-space-3);
    justify-content: center;
}

.format-tag {
    display: inline-flex;
    align-items: center;
    gap: var(--fc-space-2);
    padding: var(--fc-space-3) var(--fc-space-5);
    background: linear-gradient(
        135deg,
        var(--fc-gray-50) 0%,
        var(--fc-gray-100) 100%
    );
    border: 2px solid var(--fc-gray-200);
    border-radius: var(--fc-radius-full);
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--fc-gray-700);
    cursor: pointer;
    transition: var(--fc-transition-base);
}

.format-tag:hover {
    background: linear-gradient(
        135deg,
        var(--fc-amber-50) 0%,
        var(--fc-teal-50) 100%
    );
    border-color: var(--fc-amber-300);
    transform: translateY(-2px);
    box-shadow: var(--fc-shadow-md);
}

.format-tag-icon {
    font-size: 1.125rem;
}

/* === Responsive Design === */
@media (max-width: 768px) {
    .file-converter-section {
        padding: var(--fc-space-8) var(--fc-space-4);
    }

    .converter-title {
        font-size: 2rem;
    }

    .upload-card,
    .format-card {
        padding: var(--fc-space-6);
    }

    .drop-zone-content {
        padding: var(--fc-space-6);
    }

    .convert-btn {
        min-width: 100%;
        font-size: 1.125rem;
    }

    .converter-features {
        grid-template-columns: 1fr;
    }

    .popular-formats-list {
        flex-direction: column;
        align-items: stretch;
    }

    .format-tag {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .converter-title {
        font-size: 1.75rem;
    }

    .converter-subtitle {
        font-size: 0.875rem;
    }

    .files-header {
        flex-direction: column;
        gap: var(--fc-space-3);
        align-items: flex-start;
    }

    .change-files-btn {
        width: 100%;
    }
}

/* === Dark Mode Support === */
[data-theme='dark'] {
    /* Dark Mode Color Variables */
    --fc-dark-bg-primary: #0f172a;
    --fc-dark-bg-secondary: #1e293b;
    --fc-dark-bg-tertiary: #334155;
    --fc-dark-text-primary: #f1f5f9;
    --fc-dark-text-secondary: #cbd5e1;
    --fc-dark-text-muted: #94a3b8;
    --fc-dark-border: #475569;
}

[data-theme='dark'] .file-converter-section {
    background: linear-gradient(
        135deg,
        #0f172a 0%,
        #1e293b 50%,
        #1a1f2e 100%
    );
}

[data-theme='dark'] .converter-badge {
    background: linear-gradient(
        135deg,
        rgba(245, 158, 11, 0.2) 0%,
        rgba(20, 184, 166, 0.2) 100%
    );
    border-color: var(--fc-amber-600);
    color: var(--fc-dark-text-primary);
}

[data-theme='dark'] .converter-subtitle {
    color: var(--fc-dark-text-secondary);
}

[data-theme='dark'] .upload-card,
[data-theme='dark'] .format-card {
    background: var(--fc-dark-bg-secondary);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

[data-theme='dark'] .drop-zone-content {
    background: var(--fc-dark-bg-tertiary);
    border-color: var(--fc-dark-border);
}

[data-theme='dark'] .drop-zone-content:hover {
    background: rgba(245, 158, 11, 0.1);
    border-color: var(--fc-amber-500);
}

[data-theme='dark'] .drop-zone-title {
    color: var(--fc-dark-text-primary);
}

[data-theme='dark'] .drop-zone-text {
    color: var(--fc-dark-text-muted);
}

[data-theme='dark'] .drop-zone-hint {
    color: var(--fc-dark-text-muted);
}

[data-theme='dark'] .drop-zone-formats-wrapper {
    background: var(--fc-dark-bg-primary);
    border-color: var(--fc-dark-border);
}

[data-theme='dark'] .format-category {
    color: var(--fc-dark-text-secondary);
}

[data-theme='dark'] .format-label {
    color: var(--fc-dark-text-primary);
}

[data-theme='dark'] .format-list {
    color: var(--fc-dark-text-muted);
}

[data-theme='dark'] .files-header {
    border-bottom-color: var(--fc-dark-border);
}

[data-theme='dark'] .files-title {
    color: var(--fc-dark-text-primary);
}

[data-theme='dark'] .change-files-btn {
    color: var(--fc-amber-400);
    border-color: var(--fc-amber-600);
    background: transparent;
}

[data-theme='dark'] .change-files-btn:hover {
    background: rgba(245, 158, 11, 0.1);
    border-color: var(--fc-amber-500);
}

[data-theme='dark'] .file-item {
    background: var(--fc-dark-bg-tertiary);
}

[data-theme='dark'] .file-item-name {
    color: var(--fc-dark-text-primary);
}

[data-theme='dark'] .file-item-size {
    color: var(--fc-dark-text-muted);
}

[data-theme='dark'] .format-label {
    color: var(--fc-dark-text-primary);
}

[data-theme='dark'] .format-select {
    background: var(--fc-dark-bg-tertiary);
    border-color: var(--fc-dark-border);
    color: var(--fc-dark-text-primary);
}

[data-theme='dark'] .format-select:hover {
    background: var(--fc-dark-bg-primary);
    border-color: var(--fc-teal-500);
}

[data-theme='dark'] .format-select optgroup {
    color: var(--fc-dark-text-secondary);
}

[data-theme='dark'] .format-preview {
    background: linear-gradient(
        135deg,
        rgba(20, 184, 166, 0.1) 0%,
        rgba(6, 182, 212, 0.1) 100%
    );
    border-color: var(--fc-teal-600);
}

[data-theme='dark'] .format-preview-name {
    color: var(--fc-teal-400);
}

[data-theme='dark'] .feature-item {
    background: var(--fc-dark-bg-secondary);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

[data-theme='dark'] .feature-title {
    color: var(--fc-dark-text-primary);
}

[data-theme='dark'] .feature-desc {
    color: var(--fc-dark-text-secondary);
}

[data-theme='dark'] .popular-formats {
    background: var(--fc-dark-bg-secondary);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

[data-theme='dark'] .popular-formats-title {
    color: var(--fc-dark-text-primary);
}

[data-theme='dark'] .format-tag {
    background: var(--fc-dark-bg-tertiary);
    border-color: var(--fc-dark-border);
    color: var(--fc-dark-text-primary);
}

[data-theme='dark'] .format-tag:hover {
    background: linear-gradient(
        135deg,
        rgba(245, 158, 11, 0.2) 0%,
        rgba(20, 184, 166, 0.2) 100%
    );
    border-color: var(--fc-amber-500);
}