:root {
    --bg-color: #0f172a; /* Slate 900 */
    --card-bg: #1e293b; /* Slate 800 */
    --card-hover: #334155; /* Slate 700 */
    --primary: #8b5cf6; /* Violet 500 */
    --primary-hover: #7c3aed; /* Violet 600 */
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --accent: #10b981; /* Emerald 500 */
    --accent-hover: #059669; /* Emerald 600 */
    --radius: 16px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Outfit', sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-main);
    overflow-x: hidden;
    line-height: 1.5;
}

/* Navbar */
.navbar {
    position: sticky;
    top: 0;
    background: rgba(15, 23, 42, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    z-index: 1000;
    padding: 1rem 0;
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 2rem;
}

.logo {
    font-family: 'Rowdies', cursive;
    font-size: 1.8rem;
    color: var(--text-main);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    letter-spacing: 1px;
    background: linear-gradient(135deg, #a855f7, #ec4899);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.search-bar {
    flex: 1;
    max-width: 500px;
    position: relative;
    display: flex;
    align-items: center;
}

.search-bar i {
    position: absolute;
    left: 1rem;
    color: var(--text-muted);
}

.search-bar input {
    width: 100%;
    padding: 0.75rem 1rem 0.75rem 2.5rem;
    border-radius: 50px;
    border: 1px solid rgba(255,255,255,0.1);
    background: rgba(255,255,255,0.05);
    color: var(--text-main);
    font-size: 1rem;
    outline: none;
    transition: var(--transition);
}

.search-bar input:focus {
    background: rgba(255,255,255,0.1);
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(139, 92, 246, 0.2);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    gap: 0.4rem;
    transition: var(--transition);
}

.nav-links a:hover, .nav-links a.active {
    color: var(--text-main);
}

.nav-links .upload-btn {
    background: linear-gradient(135deg, var(--accent), var(--accent-hover));
    color: white;
    padding: 0.6rem 1.2rem;
    border-radius: 50px;
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.3);
}

.nav-links .upload-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(16, 185, 129, 0.4);
    color: white;
}

/* Layout */
.container {
    max-width: 1400px;
    margin: 2rem auto;
    padding: 0 2rem;
    display: grid;
    grid-template-columns: 250px 1fr;
    gap: 2rem;
}

/* Sidebar */
.sidebar {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 1.5rem;
    height: fit-content;
    border: 1px solid rgba(255,255,255,0.05);
    position: sticky;
    top: 100px;
}

.sidebar h3 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.category-list {
    list-style: none;
}

.category-list li {
    padding: 0.8rem 1rem;
    border-radius: 12px;
    margin-bottom: 0.5rem;
    cursor: pointer;
    font-weight: 600;
    color: var(--text-muted);
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.8rem;
}

.category-list li:hover {
    background: rgba(255,255,255,0.05);
    color: var(--text-main);
    transform: translateX(5px);
}

.category-list li.active {
    background: rgba(139, 92, 246, 0.15);
    color: var(--primary);
}

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, #1e1b4b, #312e81);
    border-radius: var(--radius);
    padding: 3rem 2rem;
    text-align: center;
    margin-bottom: 2rem;
    border: 1px solid rgba(255,255,255,0.05);
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.15) 0%, transparent 60%);
    animation: rotate 20s linear infinite;
    pointer-events: none;
}

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

.hero-section h1 {
    font-family: 'Rowdies', cursive;
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    position: relative;
    z-index: 1;
}

.hero-section p {
    font-size: 1.1rem;
    color: var(--text-muted);
    position: relative;
    z-index: 1;
}

/* Game Grid */
.game-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1.5rem;
}

.game-card {
    background: var(--card-bg);
    border-radius: var(--radius);
    overflow: hidden;
    cursor: pointer;
    transition: var(--transition);
    border: 1px solid rgba(255,255,255,0.05);
    position: relative;
    display: flex;
    flex-direction: column;
}

.game-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 15px 30px rgba(0,0,0,0.4);
    border-color: rgba(255,255,255,0.2);
}

.game-thumbnail {
    width: 100%;
    aspect-ratio: 1;
    background-color: #2a364a;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 4rem;
    position: relative;
    overflow: hidden;
}

.game-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

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

.game-thumbnail i {
    color: rgba(255,255,255,0.5);
    transition: var(--transition);
}

.game-card:hover .game-thumbnail i {
    transform: scale(1.1);
    color: rgba(255,255,255,0.8);
}

.game-info {
    padding: 1rem;
    background: linear-gradient(to top, var(--card-bg) 80%, transparent);
}

.game-title {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 0.3rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.game-category {
    font-size: 0.85rem;
    color: var(--primary);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.play-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    transition: var(--transition);
    backdrop-filter: blur(2px);
}

.play-overlay span {
    background: var(--primary);
    color: white;
    padding: 0.8rem 1.5rem;
    border-radius: 50px;
    font-weight: bold;
    font-size: 1.1rem;
    transform: translateY(20px);
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.game-card:hover .play-overlay {
    opacity: 1;
}

.game-card:hover .play-overlay span {
    transform: translateY(0);
}

/* Upload Page Form Styles */
.upload-container {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 3rem;
    max-width: 800px;
    margin: 0 auto;
    border: 1px solid rgba(255,255,255,0.05);
}

.upload-header {
    text-align: center;
    margin-bottom: 2rem;
}

.upload-header h1 {
    font-family: 'Rowdies', cursive;
    margin-bottom: 1rem;
    color: var(--primary);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-muted);
}

.form-group input, .form-group textarea, .form-group select {
    width: 100%;
    padding: 1rem;
    border-radius: 12px;
    background: rgba(0,0,0,0.2);
    border: 1px solid rgba(255,255,255,0.1);
    color: var(--text-main);
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus, .form-group textarea:focus, .form-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.2);
}

.submit-btn {
    width: 100%;
    padding: 1rem;
    background: linear-gradient(135deg, var(--primary), var(--primary-hover));
    color: white;
    border: none;
    border-radius: 12px;
    font-size: 1.1rem;
    font-weight: bold;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(139, 92, 246, 0.4);
}

.guidelines {
    background: rgba(16, 185, 129, 0.1);
    border-left: 4px solid var(--accent);
    padding: 1rem;
    border-radius: 0 8px 8px 0;
    margin-bottom: 2rem;
}

/* Footer */
footer {
    text-align: center;
    padding: 2rem;
    margin-top: 4rem;
    border-top: 1px solid rgba(255,255,255,0.05);
    color: var(--text-muted);
}

footer a {
    color: var(--primary);
    text-decoration: none;
    font-weight: bold;
}

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

/* Responsive */
@media (max-width: 992px) {
    .container {
        grid-template-columns: 1fr;
    }
    .sidebar {
        position: static;
        display: flex;
        overflow-x: auto;
        padding: 1rem;
    }
    .sidebar h3 {
        display: none;
    }
    .category-list {
        display: flex;
        gap: 1rem;
    }
    .category-list li {
        white-space: nowrap;
        margin-bottom: 0;
    }
}

@media (max-width: 768px) {
    .nav-container {
        flex-wrap: wrap;
    }
    .search-bar {
        order: 3;
        min-width: 100%;
    }
    .nav-links a span {
        display: none; /* Hide text on mobile, keep icons */
    }
}