:root {
    --gold: #FFD700;
    --gold-dim: #B8860B;
    --dark-bg: #0a0a0a;
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 215, 0, 0.2);
}

body {
    background-color: var(--dark-bg);
    color: #ffffff;
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    margin: 0;
    line-height: 1.6;
    -webkit-tap-highlight-color: transparent;
}

header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(10, 10, 10, 0.9);
    backdrop-filter: blur(15px);
    border-bottom: 1px solid var(--glass-border);
    padding: 1rem 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap; /* للسماح بالعناصر بالنزول في الشاشات الصغيرة */
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-container img {
    width: 40px;
    height: 40px;
}

nav ul {
    display: flex;
    list-style: none;
    gap: 20px;
    margin: 0;
    padding: 0;
}

nav a {
    color: #fff;
    text-decoration: none;
    font-weight: 500;
    transition: 0.3s;
    font-size: 0.85rem;
}

nav a:hover { color: var(--gold); }

/* تحسينات الهواتف */
@media (max-width: 768px) {
    header { justify-content: center; gap: 15px; }
    .hero-title { font-size: 2.5rem !important; }
    .hero-section { padding: 80px 5%; }
    nav ul { gap: 10px; font-size: 0.75rem; flex-wrap: wrap; justify-content: center; }
    .feature-grid { grid-template-columns: 1fr; } /* عمود واحد في الهاتف */
}

.hero-section {
    padding: 100px 5%;
    text-align: center;
    background: radial-gradient(circle at center, #1a1a1a 0%, #0a0a0a 100%);
}

.hero-title {
    font-size: 4rem;
    color: var(--gold);
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 5px;
}

.btn-primary, .btn-secondary {
    padding: 12px 30px;
    border-radius: 50px;
    font-weight: bold;
    text-decoration: none;
    display: inline-block;
    transition: 0.3s;
    margin: 10px;
    font-size: 0.9rem;
}

.btn-primary { background: var(--gold); color: #000; }
.btn-secondary { border: 2px solid var(--gold); color: var(--gold); }
.btn-primary:active, .btn-secondary:active { transform: scale(0.95); }

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    padding: 60px 5%;
}

.card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    padding: 25px;
    border-radius: 15px;
    text-align: center;
}

footer { padding: 40px 5%; text-align: center; border-top: 1px solid var(--glass-border); color: var(--gold-dim); font-size: 0.8rem; }