:root {
    --primary-color: #6366f1;
    --primary-hover: #4f46e5;
    --gradient-start: #6366f1;
    --gradient-end: #a855f7;
    
    /* Light Theme Variables */
    --bg-color: #f8fafc;
    --card-bg: rgba(255, 255, 255, 0.7);
    --card-border: rgba(255, 255, 255, 0.5);
    --text-main: #0f172a;
    --text-muted: #64748b;
    --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.05);
}

[data-bs-theme="dark"] {
    /* Dark Theme Variables */
    --bg-color: #0f172a;
    --card-bg: rgba(30, 41, 59, 0.7);
    --card-border: rgba(255, 255, 255, 0.05);
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
}

body {
    font-family: 'Outfit', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    transition: background-color 0.3s ease, color 0.3s ease;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Glassmorphism Classes */
.glass-nav {
    background: var(--card-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--card-border);
}

.glass-card {
    background: var(--card-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--card-border);
    border-radius: 1rem;
    box-shadow: var(--glass-shadow);
}

/* Typography */
.gradient-text {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.max-w-700 {
    max-width: 700px;
}

/* Buttons and Inputs */
.btn-primary {
    background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
    border: none;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(99, 102, 241, 0.3);
}

.glow-btn:disabled {
    opacity: 0.6;
    transform: none;
    box-shadow: none;
    background: var(--text-muted);
}

.custom-select, .form-control {
    background-color: transparent;
    border: 1px solid var(--card-border);
    color: var(--text-main);
}

.custom-select:focus, .form-control:focus {
    background-color: transparent;
    color: var(--text-main);
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.25rem rgba(99, 102, 241, 0.25);
}

[data-bs-theme="dark"] .custom-select option {
    background-color: var(--bg-color);
    color: var(--text-main);
}

.custom-range::-webkit-slider-thumb {
    background: var(--primary-color);
}

/* Upload Zone */
.upload-zone {
    border: 2px dashed var(--primary-color);
    background: rgba(99, 102, 241, 0.05);
    transition: all 0.3s ease;
    cursor: pointer;
}

.upload-zone:hover, .upload-zone.dragover {
    background: rgba(99, 102, 241, 0.1);
    border-color: var(--gradient-end);
    transform: scale(1.01);
}

.icon-container {
    width: 80px;
    height: 80px;
    background: var(--card-bg);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--glass-shadow);
}

/* Animations */
@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(99, 102, 241, 0.4); }
    70% { box-shadow: 0 0 0 20px rgba(99, 102, 241, 0); }
    100% { box-shadow: 0 0 0 0 rgba(99, 102, 241, 0); }
}

.pulse-animation {
    animation: pulse 2s infinite;
}

/* File List Item */
.file-item {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 0.75rem;
    padding: 1rem;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    transition: transform 0.2s;
}

.file-item:hover {
    transform: translateX(5px);
}

.file-preview {
    width: 60px;
    height: 60px;
    border-radius: 0.5rem;
    object-fit: cover;
    background: #e2e8f0;
}

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

.file-name {
    font-weight: 600;
    margin-bottom: 0.25rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

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

.file-actions {
    display: flex;
    gap: 0.5rem;
}

.progress {
    height: 6px;
    border-radius: 3px;
    background-color: var(--card-border);
}

.progress-bar {
    background: linear-gradient(90deg, var(--gradient-start), var(--gradient-end));
}

/* Theme Toggle */
.theme-toggle {
    font-size: 1.2rem;
    color: var(--text-main);
    background: transparent;
    border: none;
}

/* Compare Slider */
.compare-overlay {
    border-right: 2px solid var(--primary-color);
}
.compare-slider {
    width: 2px;
    background: var(--primary-color);
    cursor: ew-resize;
    z-index: 10;
    transform: translateX(-50%);
}
.compare-handle {
    width: 40px;
    height: 40px;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    cursor: ew-resize;
    font-size: 1.2rem;
}