/* Website 5: Cyber Tech Dark Mode */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;600;800&display=swap');

:root {
    --bg: #020617;
    --card-bg: #0f172a;
    --primary: #22d3ee;
    --primary-hover: #0891b2;
    --text: #f8fafc;
    --text-dim: #94a3b8;
    --border: #1e293b;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg);
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
}

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

section { padding: 100px 0; }

.section-title { text-align: center; margin-bottom: 60px; }
.section-title h2 { font-size: 2.5rem; font-weight: 800; color: var(--primary); letter-spacing: -1px; }

.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 6px;
    font-weight: 600;
    transition: var(--transition);
    border: 1px solid transparent;
    cursor: pointer;
    text-decoration: none;
    font-size: 0.95rem;
}

.btn-primary { background: var(--primary); color: var(--bg); }
.btn-primary:hover { background: var(--primary-hover); transform: translateY(-2px); box-shadow: 0 0 20px rgba(34, 211, 238, 0.3); }

.btn-outline { border-color: var(--border); color: var(--text); }
.btn-outline:hover { background: var(--border); }

/* Header */
header {
    background: rgba(2, 6, 23, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    padding: 15px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.logo { font-weight: 800; font-size: 1.4rem; color: var(--text); letter-spacing: -1px; }
.logo span { color: var(--primary); }

.nav-links { display: flex; gap: 30px; list-style: none; }
.nav-links a { color: var(--text-dim); font-size: 0.9rem; font-weight: 500; text-decoration: none; }
.nav-links a:hover, .nav-links a.active { color: var(--primary); }

/* Hero */
.hero {
    padding: 150px 0;
    position: relative;
}

.hero::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(34, 211, 238, 0.05) 0%, transparent 70%);
    z-index: -1;
}

.hero h1 { font-size: 4.5rem; font-weight: 800; line-height: 1.1; margin-bottom: 25px; text-align: center; }
.hero p { font-size: 1.25rem; color: var(--text-dim); text-align: center; max-width: 700px; margin: 0 auto 40px; }

/* Grid */
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 30px; }

.card {
    background: var(--card-bg);
    padding: 40px;
    border-radius: 12px;
    border: 1px solid var(--border);
    transition: var(--transition);
}

.card:hover { border-color: var(--primary); transform: translateY(-5px); box-shadow: 0 10px 30px rgba(0,0,0,0.5); }

.card i { font-size: 2rem; color: var(--primary); margin-bottom: 20px; }

/* Footer */
footer { background: #010409; padding: 80px 0 30px; border-top: 1px solid var(--border); }
footer h4 { color: var(--text); margin-bottom: 20px; font-size: 1.1rem; }
footer ul { list-style: none; }
footer li { margin-bottom: 12px; }
footer a { color: var(--text-dim); text-decoration: none; font-size: 0.9rem; }
footer a:hover { color: var(--primary); }

@media (max-width: 768px) {
    .hero h1 { font-size: 3rem; }
    .nav-links { display: none; }
    .footer-grid { grid-template-columns: 1fr 1fr !important; }
}
@media (max-width: 480px) {
    .footer-grid { grid-template-columns: 1fr !important; }
}