* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Cairo', sans-serif;
    scroll-behavior: smooth;
}

body {
    min-height: 100vh;
    background: #090a1a;
    color: #fff;
    position: relative;
    overflow-x: hidden;
}

/* شبكة خلفية ناعمة */
.bg-ambient {
    position: fixed;
    inset: 0;
    background: 
        linear-gradient(135deg, rgba(15, 23, 42, 0.90) 0%, rgba(30, 27, 75, 0.85) 50%, rgba(9, 10, 26, 0.95) 100%),
        url('https://images.unsplash.com/photo-1523240795612-9a054b0db644?auto=format&fit=crop&w=1920&q=80') center/cover no-repeat fixed;
    z-index: -1;
}

.container {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 20px;
}

/* شريط التنقل العلوي */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
}

.brand-logo {
    font-size: 1.5rem;
    font-weight: 900;
    color: #fff;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 10px;
}

.nav-links {
    display: flex;
    gap: 25px;
    list-style: none;
    margin-bottom: 0;
}

.nav-links a {
    color: #cbd5e1;
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: #38bdf8;
}

/* Hero Section */
.hero-section {
    min-height: 85vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 40px 0;
}

/* البطاقة الزجاجية */
.glass-card {
    background: rgba(15, 23, 42, 0.55);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 28px;
    padding: 45px 35px;
    max-width: 720px;
    margin: 0 auto;
    box-shadow: 0 30px 70px rgba(0, 0, 0, 0.6), inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.badge-center {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(99, 102, 241, 0.2);
    border: 1px solid rgba(165, 180, 252, 0.4);
    color: #c7d2fe;
    padding: 6px 18px;
    border-radius: 50px;
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 20px;
}

.title-gradient {
    font-size: 2.8rem;
    font-weight: 900;
    background: linear-gradient(135deg, #e9d5ff, #818cf8, #38bdf8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 15px;
}

.subtitle {
    font-size: 1.15rem;
    color: #e2e8f0;
    line-height: 1.8;
    margin-bottom: 35px;
}

.main-actions {
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px 28px;
    border-radius: 14px;
    font-size: 1.05rem;
    font-weight: 700;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.btn-teacher {
    background: linear-gradient(135deg, #4f46e5, #7c3aed);
    color: #ffffff;
    border: 1px solid rgba(255, 255, 255, 0.25);
    box-shadow: 0 10px 25px -5px rgba(99, 102, 241, 0.6);
    flex: 1;
    min-width: 220px;
}

.btn-teacher:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 30px -5px rgba(124, 58, 237, 0.8);
    color: #ffffff;
}

.btn-admin {
    background: rgba(255, 255, 255, 0.95);
    color: #0f172a;
    border: none;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
    flex: 1;
    min-width: 200px;
}

.btn-admin:hover {
    background: #ffffff;
    transform: translateY(-3px);
    color: #0f172a;
}

.student-portal-link {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.12);
    color: #cbd5e1;
    font-size: 0.95rem;
}

.student-portal-link a {
    color: #38bdf8;
    text-decoration: none;
    font-weight: 700;
}

/* أقسام المحتوى (التعريف والخدمات) */
.section-padding {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 50px;
}

.section-title {
    font-size: 2.2rem;
    font-weight: 900;
    color: #fff;
    margin-bottom: 12px;
}

.section-desc {
    color: #94a3b8;
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

/* كروت الخدمات والمميزات */
.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 25px;
}

.feature-card {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 35px 25px;
    transition: all 0.3s ease;
    position: relative;
}

.feature-card:hover {
    transform: translateY(-6px);
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(99, 102, 241, 0.4);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

.feature-icon {
    width: 60px;
    height: 60px;
    border-radius: 16px;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.2), rgba(168, 85, 247, 0.2));
    border: 1px solid rgba(165, 180, 252, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    color: #818cf8;
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 12px;
    color: #f8fafc;
}

.feature-card p {
    color: #94a3b8;
    line-height: 1.7;
    font-size: 0.98rem;
}

/* قسم عن السنتر / الأرقام الإحصائية */
.about-box {
    background: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(15px);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 24px;
    padding: 50px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

@media (max-width: 768px) {
    .about-box {
        grid-template-columns: 1fr;
        padding: 30px;
    }
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.stat-item {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    padding: 20px;
    border-radius: 16px;
    text-align: center;
}

.stat-number {
    font-size: 2.2rem;
    font-weight: 900;
    color: #38bdf8;
    margin-bottom: 5px;
}

.stat-label {
    color: #cbd5e1;
    font-size: 0.95rem;
}

/* التذييل (Footer) */
footer {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding: 30px 0;
    text-align: center;
    color: #64748b;
    font-size: 0.9rem;
}