:root {
    --bg-color: #030014; /* Deep dark blue/purple */
    --card-bg: rgba(255, 255, 255, 0.03);
    --card-border: rgba(255, 255, 255, 0.1);
    --primary-accent: #00f3ff; /* Neon Cyan */
    --secondary-accent: #bc13fe; /* Neon Purple */
    --text-primary: #ffffff;
    --text-secondary: #a1a1aa;
    --font-main: 'Inter', system-ui, -apple-system, sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: var(--font-main);
    margin: 0;
    padding: 0;
    min-height: 100vh;
    background-image: 
        radial-gradient(circle at 10% 20%, rgba(188, 19, 254, 0.1) 0%, transparent 20%),
        radial-gradient(circle at 90% 80%, rgba(0, 243, 255, 0.1) 0%, transparent 20%);
}

/* Header */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 5%;
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--card-border);
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(3, 0, 20, 0.8);
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    background: linear-gradient(to right, var(--text-primary), var(--primary-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -0.02em;
}

.upload-btn {
    background: linear-gradient(45deg, var(--secondary-accent), var(--primary-accent));
    border: none;
    padding: 0.6rem 1.2rem;
    border-radius: 99px;
    color: white;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.3s ease;
    box-shadow: 0 0 20px rgba(188, 19, 254, 0.3);
}

.upload-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 30px rgba(0, 243, 255, 0.5);
}

/* Hero Section */
.hero {
    text-align: center;
    padding: 4rem 1rem;
    max-width: 800px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    line-height: 1.1;
}

.hero p {
    color: var(--text-secondary);
    font-size: 1.2rem;
    margin-bottom: 2rem;
}

/* Video Grid */
.container {
    padding: 2rem 5%;
}

.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
}

.video-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    text-decoration: none;
    display: block;
}

.video-card:hover {
    transform: translateY(-5px) scale(1.02);
    border-color: var(--primary-accent);
    box-shadow: 0 10px 40px -10px rgba(0, 243, 255, 0.15);
}

.thumbnail-wrapper {
    position: relative;
    padding-top: 56.25%; /* 16:9 Aspect Ratio */
    overflow: hidden;
}

.thumbnail-wrapper img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.video-card:hover .thumbnail-wrapper img {
    transform: scale(1.1);
}

.play-icon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) scale(0.8);
    width: 50px;
    height: 50px;
    background: rgba(0,0,0,0.6);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: all 0.3s ease;
    backdrop-filter: blur(4px);
    border: 1px solid rgba(255,255,255,0.2);
}

.play-icon::after {
    content: '';
    display: block;
    width: 0;
    height: 0;
    border-left: 14px solid white;
    border-top: 9px solid transparent;
    border-bottom: 9px solid transparent;
    margin-left: 4px;
}

.video-card:hover .play-icon {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
}

.card-content {
    padding: 1.2rem;
}

.video-title {
    color: var(--text-primary);
    font-size: 1.1rem;
    font-weight: 600;
    margin: 0 0 0.5rem 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.video-meta {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.orientation-badge {
    background: rgba(255,255,255,0.1);
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 4rem;
    color: var(--text-secondary);
    grid-column: 1 / -1;
}

@media (max-width: 600px) {
    .video-grid {
        grid-template-columns: 1fr;
    }
    .hero h1 {
        font-size: 2.5rem;
    }
}