:root {
    --primary: #000080;
    --primary-dark: #00005c;
    --primary-light: #0a0a9e;
    --secondary: #E60000;
    --secondary-dark: #b30000;
    --gold: #FFD700;
    --white: #ffffff;
    --light: #f0f2f8;
    --dark: #1a1a2e;
    --gray: #6c757d;
    --shadow: 0 4px 20px rgba(0,0,128,0.12);
    --shadow-lg: 0 12px 40px rgba(0,0,128,0.2);
    --transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    --radius: 12px;
    --radius-lg: 16px;
}

* { font-family: 'Vazirmatn', Tahoma, sans-serif; }
body { background: var(--light); color: var(--dark); overflow-x: hidden; }

/* نوار اعلان */
.top-announcement {
    background: linear-gradient(90deg, var(--secondary), var(--secondary-dark));
    color: var(--white);
    text-align: center;
    padding: 10px 0;
    font-size: 14px;
    font-weight: 600;
}
.top-announcement a { color: var(--gold); text-decoration: none; font-weight: 800; }
.badge-discount {
    background: var(--white);
    color: var(--secondary);
    padding: 3px 14px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 700;
    margin: 0 5px;
}

/* هدر */
.main-header {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    box-shadow: 0 4px 30px rgba(0,0,0,0.3);
    position: sticky;
    top: 0;
    z-index: 1000;
}
.main-header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--secondary), var(--gold), var(--secondary));
}

/* لوگو */
.navbar-brand { display: flex; align-items: center; gap: 12px; text-decoration: none; }
.logo-img {
    width: 55px;
    height: 55px;
    border-radius: 50%;
    border: 2px solid rgba(255,255,255,0.2);
    transition: var(--transition);
}
.logo-img:hover { transform: rotate(5deg) scale(1.05); }
.logo-text { display: flex; flex-direction: column; }
.logo-title {
    color: var(--white);
    font-size: 22px;
    font-weight: 900;
    line-height: 1.2;
    text-shadow: 0 2px 8px rgba(0,0,0,0.3);
}
.logo-subtitle { color: rgba(255,255,255,0.6); font-size: 11px; letter-spacing: 2px; }

/* منو */
.navbar-nav .nav-link {
    color: rgba(255,255,255,0.9) !important;
    font-weight: 600;
    font-size: 14px;
    padding: 10px 14px !important;
    border-radius: 8px;
    transition: var(--transition);
    margin: 0 1px;
}
.navbar-nav .nav-link:hover,
.navbar-nav .nav-link.active {
    background: rgba(255,255,255,0.12);
    color: var(--white) !important;
}
.navbar-nav .nav-link i { margin-left: 4px; font-size: 13px; }
.navbar-toggler {
    border: 2px solid rgba(255,255,255,0.3);
    color: var(--white);
    padding: 6px 12px;
    border-radius: 8px;
}
.navbar-toggler i { font-size: 24px; color: var(--white); }

/* دراپ‌داون */
.dropdown-menu {
    background: var(--white);
    border: none;
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    border-top: 3px solid var(--secondary);
    padding: 8px;
    animation: dropFade 0.3s ease;
    min-width: 220px;
}
@keyframes dropFade {
    from { opacity: 0; transform: translateY(-8px); }
    to { opacity: 1; transform: translateY(0); }
}
.dropdown-item {
    padding: 10px 16px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    color: var(--primary) !important;
    transition: var(--transition);
}
.dropdown-item:hover {
    background: var(--light);
    color: var(--secondary) !important;
    padding-right: 20px;
}
.mega-menu { min-width: 650px; padding: 15px; }
.mega-title {
    color: var(--secondary);
    font-weight: 800;
    font-size: 14px;
    padding-bottom: 10px;
    margin-bottom: 10px;
    border-bottom: 2px solid var(--light);
}

/* دکمه‌های هدر */
.nav-actions { display: flex; gap: 8px; margin-right: 15px; }
.nav-actions .btn { font-size: 13px; font-weight: 600; border-radius: 8px; padding: 8px 18px; }

/* هیرو */
.hero-section {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 60%, #1a0a2e 100%);
    padding: 80px 0;
    position: relative;
    overflow: hidden;
    min-height: 550px;
    display: flex;
    align-items: center;
}
.hero-section::before {
    content: '';
    position: absolute;
    top: -100px; left: -100px;
    width: 400px; height: 400px;
    border-radius: 50%;
    background: rgba(230,0,0,0.06);
}
.hero-section::after {
    content: '';
    position: absolute;
    bottom: -150px; right: -150px;
    width: 500px; height: 500px;
    border-radius: 50%;
    background: rgba(255,215,0,0.04);
}
.hero-badge {
    display: inline-block;
    background: rgba(230,0,0,0.15);
    border: 1px solid rgba(230,0,0,0.3);
    color: #ff6b6b;
    padding: 6px 20px;
    border-radius: 30px;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 20px;
}
.hero-title {
    color: var(--white);
    font-size: 44px;
    font-weight: 900;
    line-height: 1.5;
    margin-bottom: 15px;
    text-shadow: 0 4px 20px rgba(0,0,0,0.3);
}
.hero-title span {
    background: linear-gradient(135deg, var(--secondary), #ff4444);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.hero-subtitle {
    color: rgba(255,255,255,0.85);
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 25px;
}
.hero-desc { color: rgba(255,255,255,0.65); font-size: 16px; line-height: 2; margin-bottom: 30px; }
.hero-buttons { display: flex; flex-wrap: wrap; gap: 15px; margin-bottom: 40px; }
.btn-hero-primary {
    background: linear-gradient(135deg, var(--secondary), var(--secondary-dark));
    color: var(--white);
    padding: 15px 40px;
    border-radius: var(--radius);
    font-weight: 800;
    font-size: 17px;
    text-decoration: none;
    box-shadow: 0 8px 30px rgba(230,0,0,0.4);
    transition: var(--transition);
    border: none;
}
.btn-hero-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 40px rgba(230,0,0,0.5);
    color: var(--white);
}
.btn-hero-secondary {
    background: rgba(255,255,255,0.1);
    border: 2px solid rgba(255,255,255,0.3);
    color: var(--white);
    padding: 15px 40px;
    border-radius: var(--radius);
    font-weight: 700;
    font-size: 17px;
    text-decoration: none;
    backdrop-filter: blur(10px);
    transition: var(--transition);
}
.btn-hero-secondary:hover { background: rgba(255,255,255,0.2); color: var(--white); }

/* آمار */
.hero-stats { display: flex; flex-wrap: wrap; gap: 35px; }
.stat-item { text-align: center; }
.stat-number { color: var(--gold); font-size: 34px; font-weight: 900; display: block; }
.stat-label { color: rgba(255,255,255,0.55); font-size: 13px; }
.hero-logo img {
    width: 320px; height: 320px;
    border-radius: 50%;
    box-shadow: 0 0 60px rgba(230,0,0,0.25), 0 0 120px rgba(0,0,128,0.15);
    border: 4px solid rgba(255,255,255,0.1);
    animation: floatLogo 3s ease-in-out infinite;
}
@keyframes floatLogo {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}

/* دسترسی سریع */
.quick-access {
    background: var(--white);
    padding: 25px 0;
    box-shadow: 0 4px 20px rgba(0,0,128,0.06);
}
.quick-btn {
    padding: 13px 24px;
    border-radius: 10px;
    font-weight: 700;
    font-size: 14px;
    text-decoration: none;
    transition: var(--transition);
    display: inline-block;
    border: none;
}
.quick-btn:hover { transform: translateY(-3px); }
.quick-btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: var(--white);
    box-shadow: 0 4px 15px rgba(0,0,128,0.2);
}
.quick-btn-primary:hover { color: var(--white); }
.quick-btn-secondary {
    background: linear-gradient(135deg, var(--secondary), var(--secondary-dark));
    color: var(--white);
    box-shadow: 0 4px 15px rgba(230,0,0,0.2);
}
.quick-btn-secondary:hover { color: var(--white); }
.quick-btn-gold {
    background: linear-gradient(135deg, var(--gold), #e6c200);
    color: var(--primary);
    box-shadow: 0 4px 15px rgba(255,215,0,0.3);
    font-weight: 800;
}
.quick-btn-gold:hover { color: var(--primary); }

/* چرا سفیرمهر */
.why-section { padding: 70px 0; background: linear-gradient(180deg, var(--light), var(--white)); }
.section-title { color: var(--primary); font-size: 34px; font-weight: 900; margin-bottom: 10px; }
.section-title span { color: var(--secondary); }
.section-line {
    width: 60px; height: 4px;
    background: linear-gradient(90deg, var(--secondary), var(--gold));
    border-radius: 4px;
    margin: 15px auto 0;
}
.feature-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 35px 25px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border-top: 4px solid var(--primary);
    height: 100%;
}
.feature-card:hover { transform: translateY(-8px); box-shadow: var(--shadow-lg); }
.feature-card.red { border-top-color: var(--secondary); }
.feature-card.gold { border-top-color: var(--gold); }
.feature-icon {
    width: 70px; height: 70px;
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    margin: 0 auto 20px;
    font-size: 28px;
    color: var(--white);
}
.feature-icon.blue { background: linear-gradient(135deg, var(--primary), var(--primary-light)); }
.feature-icon.red { background: linear-gradient(135deg, var(--secondary), var(--secondary-dark)); }
.feature-icon.gold { background: linear-gradient(135deg, var(--gold), #e6c200); }
.feature-card h3 { color: var(--primary); font-size: 18px; font-weight: 800; margin-bottom: 10px; }
.feature-card p { color: var(--gray); font-size: 14px; line-height: 1.9; }

/* دوره‌ها */
.courses-section {
    padding: 70px 0;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
}
.course-card {
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--radius-lg);
    padding: 30px 20px;
    text-align: center;
    transition: var(--transition);
    backdrop-filter: blur(10px);
    text-decoration: none;
    display: block;
    height: 100%;
}
.course-card:hover {
    background: rgba(255,255,255,0.12);
    transform: translateY(-8px);
    border-color: rgba(255,255,255,0.25);
}
.course-card.highlight {
    background: rgba(230,0,0,0.12);
    border-color: rgba(230,0,0,0.25);
}
.course-emoji { font-size: 48px; margin-bottom: 15px; display: block; }
.course-card h3 { color: var(--white); font-size: 17px; font-weight: 700; margin-bottom: 8px; }
.course-card.highlight h3 { color: var(--gold); }
.course-card p { color: rgba(255,255,255,0.5); font-size: 13px; }

/* اخبار */
.news-section { padding: 70px 0; background: var(--white); }
.news-card {
    background: var(--light);
    border-radius: 14px;
    padding: 20px;
    transition: var(--transition);
    height: 100%;
}
.news-card:hover { transform: translateY(-5px); box-shadow: var(--shadow); }
.news-card.border-red { border-right: 4px solid var(--secondary); }
.news-card.border-blue { border-right: 4px solid var(--primary); }
.news-card.border-gold { border-right: 4px solid var(--gold); }
.news-badge {
    padding: 3px 12px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 700;
    color: var(--white);
}
.news-badge.red { background: var(--secondary); }
.news-badge.blue { background: var(--primary); }
.news-badge.gold { background: var(--gold); color: #000; }
.news-date { color: #999; font-size: 12px; }
.news-card h4 { color: var(--primary); font-size: 15px; font-weight: 700; line-height: 1.8; margin: 10px 0; }
.news-card p { color: var(--gray); font-size: 13px; line-height: 1.9; }

/* فوتر */
.main-footer {
    background: linear-gradient(180deg, var(--primary), var(--primary-dark));
    color: rgba(255,255,255,0.8);
}
.footer-top { padding: 60px 0; border-top: 4px solid var(--secondary); }
.footer-logo { width: 70px; height: 70px; border-radius: 50%; margin-bottom: 15px; }
.footer-widget h4, .footer-widget h5 {
    color: var(--white);
    font-weight: 800;
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 2px solid var(--secondary);
    font-size: 18px;
}
.footer-widget p { font-size: 14px; line-height: 2; color: rgba(255,255,255,0.65); }
.footer-widget ul { list-style: none; padding: 0; margin: 0; }
.footer-widget ul li { padding: 7px 0; border-bottom: 1px solid rgba(255,255,255,0.05); }
.footer-widget ul li a {
    color: rgba(255,255,255,0.65);
    text-decoration: none;
    font-size: 14px;
    transition: var(--transition);
}
.footer-widget ul li a:hover { color: var(--gold); padding-right: 5px; }
.social-links { display: flex; gap: 10px; margin-top: 20px; }
.social-links a {
    width: 42px; height: 42px;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    color: var(--white);
    text-decoration: none;
    transition: var(--transition);
    border: 1px solid rgba(255,255,255,0.12);
    font-size: 18px;
}
.social-links a:hover {
    background: var(--secondary);
    transform: translateY(-4px) scale(1.1);
    border-color: var(--secondary);
    color: var(--white);
}
.contact-info p { margin-bottom: 12px; font-size: 14px; }
.contact-info i { color: var(--gold); margin-left: 8px; }
.contact-info a { color: rgba(255,255,255,0.8); text-decoration: none; }
.contact-info a:hover { color: var(--gold); }
.footer-bottom {
    background: rgba(0,0,0,0.2);
    padding: 18px 0;
    border-top: 1px solid rgba(255,255,255,0.08);
}
.footer-bottom p { margin: 0; font-size: 13px; color: rgba(255,255,255,0.5); }
.footer-bottom strong { color: var(--gold); }

/* واتساپ شناور */
.whatsapp-float {
    position: fixed;
    bottom: 25px; left: 25px;
    width: 60px; height: 60px;
    background: #25D366;
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    color: var(--white);
    font-size: 28px;
    text-decoration: none;
    box-shadow: 0 4px 20px rgba(37,211,102,0.4);
    z-index: 9999;
    transition: var(--transition);
    animation: wpulse 2s infinite;
}
.whatsapp-float:hover { transform: scale(1.1); color: var(--white); }
@keyframes wpulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(37,211,102,0.5); }
    50% { box-shadow: 0 0 0 15px rgba(37,211,102,0); }
}

/* بک تو تاپ */
.back-to-top {
    position: fixed;
    bottom: 25px; right: 25px;
    width: 48px; height: 48px;
    background: var(--secondary);
    border-radius: 50%;
    display: none;
    align-items: center; justify-content: center;
    color: var(--white);
    font-size: 20px;
    text-decoration: none;
    box-shadow: 0 4px 15px rgba(230,0,0,0.3);
    z-index: 9999;
    transition: var(--transition);
}
.back-to-top.show { display: flex; }
.back-to-top:hover { transform: translateY(-3px); color: var(--white); }

/* اسکرول‌بار */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--light); }
::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--primary), var(--secondary));
    border-radius: 4px;
}
::selection { background: var(--primary); color: var(--white); }

/* ریسپانسیو */
@media (max-width: 991px) {
    .mega-menu { min-width: 100%; }
    .nav-actions { margin-right: 0; margin-top: 15px; justify-content: center; }
    .hero-logo img { width: 200px; height: 200px; }
}
@media (max-width: 768px) {
    .hero-section { padding: 40px 0; text-align: center; }
    .hero-title { font-size: 28px; }
    .hero-subtitle { font-size: 16px; }
    .hero-buttons { justify-content: center; }
    .hero-stats { justify-content: center; }
    .hero-logo { margin-bottom: 30px; }
    .hero-logo img { width: 160px; height: 160px; }
    .stat-number { font-size: 26px; }
    .section-title { font-size: 26px; }
    .quick-btn { font-size: 12px; padding: 10px 16px; }
}