:root {
    --bg-dark: #0b0f19;
    --card-bg: #111827;
    --accent-gold: #f59e0b;
    --accent-glow: 0 0 16px rgba(245, 158, 11, 0.45);
    --border-color: #1f2937;
    --text-main: #f9fafb;
    --text-muted: #9ca3af;
}
* { box-sizing: border-box; margin: 0; padding: 0; font-family: 'Segoe UI', Tahoma, sans-serif; }
body { background-color: var(--bg-dark); color: var(--text-main); }
.navbar { display: flex; justify-content: space-between; align-items: center; padding: 1.2rem 5%; background-color: var(--card-bg); border-bottom: 2px solid var(--accent-gold); box-shadow: var(--accent-glow); }
.logo { display: flex; align-items: center; gap: 12px; text-decoration: none; color: var(--text-main); }
.logo-icon { width: 36px; height: 36px; filter: drop-shadow(0 0 6px var(--accent-gold)); }
.logo h1 { font-size: 1.5rem; font-weight: 700; }
.logo span { color: var(--accent-gold); text-shadow: var(--accent-glow); }
.nav-links { display: flex; list-style: none; gap: 20px; }
.nav-links a { color: var(--text-main); text-decoration: none; font-weight: 500; transition: 0.3s; }
.nav-links a:hover, .nav-links a.active { color: var(--accent-gold); text-shadow: var(--accent-glow); }
.hero { text-align: center; padding: 4rem 2rem; }
.hero h2 { font-size: 2.5rem; margin-bottom: 1rem; color: var(--accent-gold); text-shadow: var(--accent-glow); }
.container { max-width: 1200px; margin: 0 auto; padding: 2rem; display: flex; flex-direction: column; gap: 2rem; }
.ad-banner { width: 100%; min-height: 90px; background: transparent; display: flex; justify-content: center; align-items: center; margin: 10px 0; overflow: hidden; }
.crypto-ticker { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1.5rem; }
.coin-card { background: var(--card-bg); padding: 1.5rem; border-radius: 12px; border: 1px solid var(--border-color); transition: 0.3s; }
.coin-card:hover { transform: translateY(-5px); border-color: var(--accent-gold); box-shadow: var(--accent-glow); }
.coin-name { font-size: 1.2rem; font-weight: bold; }
.coin-price { font-size: 1.6rem; color: var(--text-main); margin-top: 10px; }
.positive { color: #10b981; font-weight: bold; margin-top: 5px; }
.negative { color: #ef4444; font-weight: bold; margin-top: 5px; }