:root {
    --bg: #030712;
    --card: rgba(17, 24, 39, 0.8);
    --accent: #38bdf8;
    --text: #f3f4f6;
}

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

body { 
    background-color: var(--bg); 
    color: var(--text); 
    background-image: radial-gradient(circle at top, #1e3a8a 0%, var(--bg) 60%);
    background-attachment: fixed;
}

header { padding: 80px 20px; text-align: center; }

h1 { font-size: 3.5rem; letter-spacing: -2px; color: var(--accent); margin-bottom: 10px; }

.filter-buttons { margin-top: 30px; display: flex; justify-content: center; gap: 10px; flex-wrap: wrap; }

.filter-btn {
    padding: 10px 22px;
    background: transparent;
    border: 1px solid var(--accent);
    color: var(--accent);
    border-radius: 50px;
    cursor: pointer;
    font-weight: 700;
    transition: 0.3s;
}

.filter-btn.active, .filter-btn:hover {
    background: var(--accent);
    color: #000;
}

.container { width: 90%; max-width: 1400px; margin: 0 auto; }

.ai-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.ai-card {
    background: var(--card);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 24px;
    padding: 30px;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    transition: 0.4s;
}

.ai-card:hover {
    transform: translateY(-10px);
    border-color: var(--accent);
    box-shadow: 0 0 30px rgba(56, 189, 248, 0.2);
}

.rank-badge {
    background: var(--accent);
    color: #000;
    font-weight: 800;
    padding: 4px 12px;
    border-radius: 8px;
    font-size: 0.75rem;
    margin-bottom: 20px;
}

.ai-card img {
    width: 70px;
    height: 70px;
    background: #fff;
    padding: 8px;
    border-radius: 16px;
    margin-bottom: 20px;
    object-fit: contain;
}

.category {
    font-size: 0.8rem;
    font-weight: bold;
    color: var(--accent);
    text-transform: uppercase;
    margin-bottom: 8px;
}

.stars { color: #fbbf24; margin: 10px 0; font-weight: bold; }

.visit-btn {
    width: 100%;
    margin-top: auto;
    padding: 14px;
    background: var(--accent);
    color: #000;
    text-decoration: none;
    border-radius: 12px;
    font-weight: 800;
    transition: 0.3s;
}

.visit-btn:hover { background: #fff; }