:root {
    --bg-color: #0f172a;
    --card-bg: rgba(30, 41, 59, 0.7);
    --border-color: rgba(148, 163, 184, 0.1);
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --accent-color: #3b82f6;
    --neon-green: #00ff00;
    --neon-blue: #00e5ff;
    --glass-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
}

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: 'Inter', sans-serif;
    margin: 0;
    padding: 0;
    overflow-x: hidden;
    background-image: 
        radial-gradient(circle at 10% 20%, rgba(59, 130, 246, 0.1) 0%, transparent 40%),
        radial-gradient(circle at 90% 80%, rgba(16, 185, 129, 0.1) 0%, transparent 40%);
}

.glass-card {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    box-shadow: var(--glass-shadow);
    padding: 20px;
    margin-bottom: 20px;
}

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

h1, h2, h3 {
    font-weight: 700;
    margin-top: 0;
}

h1 {
    font-size: 2.5rem;
    background: linear-gradient(to right, var(--neon-blue), var(--neon-green));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 2rem;
}

/* Sidebar Layout */
.layout-grid {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 20px;
}

.sidebar {
    position: sticky;
    top: 20px;
    height: fit-content;
}

/* Upload Form */
.upload-area {
    border: 2px dashed var(--border-color);
    border-radius: 12px;
    padding: 40px;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
}

.upload-area:hover {
    border-color: var(--accent-color);
    background: rgba(59, 130, 246, 0.05);
}

.btn {
    background: var(--accent-color);
    color: white;
    padding: 10px 20px;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    font-weight: 600;
    transition: transform 0.2s;
    text-decoration: none;
    display: inline-block;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

/* File List */
.file-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 20px;
}

.file-card {
    transition: transform 0.3s;
}

.file-card:hover {
    transform: translateY(-5px);
}

.file-meta {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 15px;
}

/* VFP Hero */
.vfp-hero {
    position: relative;
    border-radius: 12px;
    overflow: hidden;
    margin-bottom: 20px;
    aspect-ratio: 1;
}

.vfp-hero img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    image-rendering: pixelated;
}

/* Neon Slider */
.compare-container {
    position: relative;
    width: 512px;
    height: 512px;
    max-width: 100%;
    margin: 0 auto;
}

.compare-img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;
    image-rendering: pixelated;
}

.slider {
    position: absolute;
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 100%;
    background: transparent;
    outline: none;
    margin: 0;
    transition: all 0.2s;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 10;
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 4px;
    height: 512px;
    background: var(--neon-green);
    cursor: ew-resize;
    box-shadow: 0 0 10px var(--neon-green);
}

.clipper {
    position: absolute;
    top: 0;
    left: 0;
    width: 50%;
    height: 100%;
    overflow: hidden;
    border-right: 2px solid var(--neon-green);
    box-shadow: 4px 0 10px rgba(0, 255, 0, 0.2);
}