/* ═══════════════════════════════════════════════════════════════
   Ömürboyu Təhsil Məktəbi - Main Stylesheet
   ═══════════════════════════════════════════════════════════════ */

:root {
    --primary: #1a365d;
    --primary-light: #2d4a7c;
    --secondary: #0ea5e9;
    --accent: #0ea5e9;
    --accent-dark: #0284c7;
    --bg-light: #f8fafc;
    --text-dark: #1e293b;
    --text-muted: #64748b;
    --border: #e2e8f0;
    --shadow-sm: 0 2px 8px rgba(26,54,93,0.08);
    --shadow-md: 0 4px 20px rgba(26,54,93,0.12);
    --shadow-lg: 0 8px 40px rgba(26,54,93,0.16);
    --gradient-primary: linear-gradient(135deg, #1a365d 0%, #0ea5e9 100%);
    --gradient-accent: linear-gradient(135deg, #0ea5e9 0%, #38bdf8 100%);
    --radius: 0.75rem;
    --transition: all 0.3s ease;
}

* { box-sizing: border-box; }

body {
    font-family: 'Inter', -apple-system, sans-serif;
    color: var(--text-dark);
    background: var(--bg-light);
    overflow-x: hidden;
}

/* ─── Typography ─────────────────────────────────────────────── */
.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.section-title { font-size: 2rem; font-weight: 800; margin-bottom: 0.5rem; }
.section-subtitle { color: var(--text-muted); max-width: 600px; margin: 0 auto; }
.line-clamp-2 { display: -webkit-box; -webkit-line-clamp: 2; line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.line-clamp-3 { display: -webkit-box; -webkit-line-clamp: 3; line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }

/* ─── Header ─────────────────────────────────────────────────── */
.header-fixed {
    position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
}

.header-inner {
    display: flex; align-items: center; justify-content: space-between;
    height: 70px;
}

.header-logo {
    display: flex; align-items: center; gap: 0.75rem;
    text-decoration: none;
}

.logo-text {
    font-size: 1.75rem; font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.logo-subtitle { color: var(--text-muted); font-size: 0.8rem; }

.header-nav { display: flex; align-items: center; gap: 0.25rem; }
.header-nav .nav-link {
    padding: 0.5rem 1rem; border-radius: var(--radius);
    font-size: 0.875rem; font-weight: 500; color: var(--text-dark);
    transition: var(--transition); text-decoration: none;
}
.header-nav .nav-link:hover { background: #f1f5f9; }
.header-nav .nav-link.active {
    background: var(--primary); color: #fff;
}

/* ─── Buttons ────────────────────────────────────────────────── */
.btn-accent {
    background: var(--gradient-accent); color: #fff; border: none;
    font-weight: 600; border-radius: var(--radius);
    transition: var(--transition);
}
.btn-accent:hover { background: var(--accent-dark); color: #fff; transform: translateY(-1px); box-shadow: var(--shadow-md); }

.btn-outline-accent {
    border: 1.5px solid var(--accent); color: var(--accent);
    border-radius: var(--radius); font-weight: 500;
    transition: var(--transition);
}
.btn-outline-accent:hover { background: var(--accent); color: #fff; }

.btn-link { text-decoration: none; font-weight: 600; }

/* ─── Hamburger ──────────────────────────────────────────────── */
.hamburger {
    background: none; border: none; padding: 0.5rem;
    cursor: pointer; display: flex; flex-direction: column; gap: 5px;
}
.hamburger span {
    width: 24px; height: 2px; background: var(--text-dark);
    border-radius: 2px; transition: var(--transition);
}

/* ─── Mobile Menu ────────────────────────────────────────────── */
.mobile-menu {
    display: none; background: #fff;
    border-top: 1px solid var(--border);
    padding: 1rem;
}
.mobile-menu.open { display: block; }
.mobile-link {
    display: block; padding: 0.75rem 1rem; color: var(--text-dark);
    text-decoration: none; border-radius: var(--radius);
    font-weight: 500; transition: var(--transition);
}
.mobile-link:hover { background: #f1f5f9; }

/* ─── Main Content ───────────────────────────────────────────── */
.main-content { padding-top: 70px; }

/* ─── Hero Section ───────────────────────────────────────────── */
.hero-section {
    position: relative; min-height: 75vh;
    display: flex; align-items: center;
    background: url('../images/hero-bg.jpg') center/cover no-repeat;
    overflow: hidden;
}
.hero-overlay {
    position: absolute; inset: 0;
    background: linear-gradient(180deg, rgba(26,54,93,0.6) 0%, rgba(14,165,233,0.45) 100%);
}
.hero-blur-box {
    background: rgba(26, 54, 93, 0.45);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-radius: 16px;
    padding: 2.5rem;
    border: 1px solid rgba(255, 255, 255, 0.15);
}
.hero-title { font-size: 3rem; font-weight: 800; line-height: 1.15; }
.hero-text { font-size: 1.15rem; line-height: 1.7; }
.text-accent { color: var(--accent) !important; }
.text-white-75 { color: rgba(255,255,255,0.85) !important; }
.text-white-50 { color: rgba(255,255,255,0.5) !important; }

@media (max-width: 768px) {
    .hero-title { font-size: 2rem; }
    .hero-section { min-height: 60vh; }
}

/* ─── Page Hero ──────────────────────────────────────────────── */
.page-hero {
    background: var(--gradient-primary);
    padding: 6rem 0 3rem;
}

/* ─── Sections ───────────────────────────────────────────────── */
.section-padding { padding: 5rem 0; }
.bg-light { background: var(--bg-light) !important; }

/* ─── Cards ──────────────────────────────────────────────────── */
.shadow-card { box-shadow: var(--shadow-sm); border: 1px solid var(--border); border-radius: var(--radius); }
.card-hover { transition: var(--transition); }
.card-hover:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.card-accent-top { height: 4px; background: var(--gradient-accent); }

.object-cover { object-fit: cover; }

/* ─── Icon Boxes ─────────────────────────────────────────────── */
.icon-box {
    width: 56px; height: 56px; border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.5rem;
}
.icon-box-primary { background: rgba(26,54,93,0.1); color: var(--primary); }
.icon-box-success { background: rgba(34,197,94,0.1); color: #22c55e; }
.icon-box-warning { background: rgba(245,158,11,0.1); color: #f59e0b; }
.icon-box-accent { background: rgba(14,165,233,0.1); color: var(--accent); }

/* ─── Avatar ─────────────────────────────────────────────────── */
.avatar-circle {
    width: 44px; height: 44px; border-radius: 50%;
    background: var(--gradient-accent); color: #fff;
    display: flex; align-items: center; justify-content: center;
    font-weight: 700; font-size: 0.9rem; flex-shrink: 0;
}
.avatar-xl { width: 80px; height: 80px; font-size: 1.5rem; }
.avatar-sm { width: 36px; height: 36px; font-size: 0.75rem; }

/* ─── CTA Section ────────────────────────────────────────────── */
.cta-section {
    position: relative; padding: 5rem 0;
    background: var(--gradient-primary);
    overflow: hidden;
}
.cta-section::before {
    content: ''; position: absolute; inset: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.3;
}
.bg-white-10 { background: rgba(255,255,255,0.1) !important; }
.bg-white-25 { background: rgba(255,255,255,0.25); }
.border-white-25 { border-color: rgba(255,255,255,0.25) !important; }

/* ─── Gradient Background ────────────────────────────────────── */
.bg-gradient-primary { background: var(--gradient-primary) !important; }

/* ─── Footer ─────────────────────────────────────────────────── */
.site-footer {
    background: var(--primary); color: #fff;
    padding: 4rem 0 0;
}
.footer-links { list-style: none; padding: 0; margin: 0; }
.footer-links li { margin-bottom: 0.5rem; }
.footer-links a { color: rgba(255,255,255,0.65); text-decoration: none; font-size: 0.875rem; transition: var(--transition); }
.footer-links a:hover { color: #fff; }
.footer-contact { list-style: none; padding: 0; margin: 0; }
.footer-contact li { display: flex; align-items: flex-start; gap: 0.75rem; color: rgba(255,255,255,0.65); font-size: 0.875rem; margin-bottom: 0.75rem; }
.footer-contact i { margin-top: 2px; }
.footer-bottom { margin-top: 3rem; padding: 1.5rem 0; border-top: 1px solid rgba(255,255,255,0.15); }
.social-links { display: flex; gap: 0.5rem; }
.social-link {
    width: 36px; height: 36px; border-radius: 50%;
    background: rgba(255,255,255,0.1); color: #fff;
    display: flex; align-items: center; justify-content: center;
    text-decoration: none; transition: var(--transition);
}
.social-link:hover { background: rgba(255,255,255,0.2); color: #fff; }

/* ─── Tabs ───────────────────────────────────────────────────── */
.division-tab {
    border-radius: var(--radius) !important;
    border: 1px solid var(--border) !important;
    padding: 0.85rem 1.25rem !important;
    font-weight: 600 !important;
    transition: var(--transition);
}
.division-tab.active {
    background: var(--primary) !important;
    color: #fff !important;
    border-color: var(--primary) !important;
}

.nav-pills .nav-link {
    border-radius: var(--radius);
    font-weight: 600;
    border: 1px solid var(--border);
    color: var(--text-dark);
}
.nav-pills .nav-link.active {
    background: var(--primary);
    border-color: var(--primary);
}

/* ─── Sticky Filter ──────────────────────────────────────────── */
.sticky-filter { position: sticky; top: 70px; z-index: 40; }

/* ─── Border utility ─────────────────────────────────────────── */
@media (min-width: 768px) {
    .border-start-md { border-left: 1px solid var(--border) !important; padding-left: 1.5rem !important; }
}

/* ─── Animations ─────────────────────────────────────────────── */
.animate-fade-up {
    animation: fadeUp 0.6s ease both;
}
@keyframes fadeUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ─── Custom Scrollbar ───────────────────────────────────────── */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: #f1f5f9; }
::-webkit-scrollbar-thumb { background: var(--accent); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--primary); }

/* ─── Form Controls ──────────────────────────────────────────── */
.form-control:focus, .form-select:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 0.2rem rgba(14,165,233,0.15);
}

/* ─── Badge Custom ───────────────────────────────────────────── */
.bg-accent { background: var(--accent) !important; color: #fff !important; }
.badge.bg-outline { background: transparent; border: 1px solid var(--border); color: var(--text-muted); font-weight: 500; }

/* ─── Z-index ────────────────────────────────────────────────── */
.z-2 { z-index: 2; }

/* ─── Max Width ──────────────────────────────────────────────── */
.max-w-md { max-width: 28rem; }

/* ─── Animation Delays ───────────────────────────────────────── */
.delay-0 { animation-delay: 0s; }
.delay-1 { animation-delay: 0.05s; }
.delay-2 { animation-delay: 0.1s; }
.delay-3 { animation-delay: 0.15s; }
.delay-4 { animation-delay: 0.2s; }
.delay-5 { animation-delay: 0.25s; }
.delay-6 { animation-delay: 0.3s; }
.delay-7 { animation-delay: 0.35s; }
.delay-8 { animation-delay: 0.4s; }
.delay-9 { animation-delay: 0.45s; }
.delay-10 { animation-delay: 0.5s; }
.delay-11 { animation-delay: 0.55s; }
.delay-12 { animation-delay: 0.6s; }