/* ═══════════════════════════════════════════════════════════════
   Abhinav College of Education — Design System
   ═══════════════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Poppins:wght@500;600;700;800&display=swap');

/* ─── CSS Variables ──────────────────────────────────────────── */
:root {
  --primary: #1B4D8E;
  --primary-light: #2A6BC7;
  --primary-dark: #0F2D54;
  --primary-rgb: 27,77,142;
  --secondary: #E8A838;
  --secondary-light: #F0C060;
  --accent: #2EAD6D;
  --surface: #F4F7FB;
  --card: #FFFFFF;
  --text: #1E293B;
  --text-muted: #64748B;
  --border: #E2E8F0;
  --danger: #DC2626;
  --danger-light: #FEE2E2;
  --success: #16A34A;
  --success-light: #DCFCE7;
  --warning: #F59E0B;
  --warning-light: #FEF3C7;
  --info: #0EA5E9;
  --info-light: #E0F2FE;
  --shadow-sm: 0 1px 3px rgba(0,0,0,.08);
  --shadow-md: 0 4px 16px rgba(0,0,0,.1);
  --shadow-lg: 0 10px 40px rgba(0,0,0,.12);
  --shadow-xl: 0 20px 60px rgba(0,0,0,.15);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --transition: .3s cubic-bezier(.4,0,.2,1);
  --font-body: 'Inter', system-ui, sans-serif;
  --font-heading: 'Poppins', system-ui, sans-serif;
  --container: 1200px;
  --header-h: 80px;
}

/* ─── Reset ──────────────────────────────────────────────────── */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:var(--font-body);color:var(--text);background:var(--surface);line-height:1.7;overflow-x:hidden;min-height:100vh}
img{max-width:100%;height:auto;display:block}
a{color:var(--primary);text-decoration:none;transition:var(--transition)}
a:hover{color:var(--primary-light)}
ul,ol{list-style:none}
button{cursor:pointer;border:none;font-family:inherit}
h1,h2,h3,h4,h5,h6{font-family:var(--font-heading);font-weight:700;line-height:1.25;color:var(--primary-dark)}

/* ─── Container ──────────────────────────────────────────────── */
.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px}

/* ─── Top Bar ────────────────────────────────────────────────── */
.top-bar{background:var(--primary-dark);color:#fff;padding:8px 0;font-size:.85rem}
.top-bar .container{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:8px}
.top-bar a{color:rgba(255,255,255,.85);font-size:.85rem}
.top-bar a:hover{color:var(--secondary)}
.top-bar-left,.top-bar-right{display:flex;align-items:center;gap:16px}
.top-bar i{margin-right:5px;color:var(--secondary)}

/* ─── Header / Navbar ────────────────────────────────────────── */
.header{background:var(--card);box-shadow:var(--shadow-sm);position:sticky;top:0;z-index:1000;transition:var(--transition)}
.header.scrolled{box-shadow:var(--shadow-md)}
.header .container{display:flex;align-items:center;justify-content:space-between;height:var(--header-h)}
.logo{display:flex;align-items:center;gap:12px;text-decoration:none}
.logo-icon{width:52px;height:52px;background:linear-gradient(135deg,var(--primary),var(--primary-light));border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;color:#fff;font-family:var(--font-heading);font-weight:800;font-size:1.4rem;flex-shrink:0}
.logo-text h1{font-size:1.15rem;font-weight:700;color:var(--primary-dark);line-height:1.2}
.logo-text span{font-size:.75rem;color:var(--text-muted);font-weight:400}

.nav-menu{display:flex;align-items:center;gap:4px}
.nav-menu a{padding:10px 18px;border-radius:var(--radius-sm);font-weight:500;font-size:.92rem;color:var(--text);transition:var(--transition);position:relative}
.nav-menu a:hover,.nav-menu a.active{color:var(--primary);background:rgba(var(--primary-rgb),.06)}
.nav-menu a.active::after{content:'';position:absolute;bottom:4px;left:50%;transform:translateX(-50%);width:20px;height:3px;background:var(--primary);border-radius:3px}

/* Hamburger */
.hamburger{display:none;flex-direction:column;gap:5px;padding:8px;cursor:pointer;z-index:1001}
.hamburger span{width:26px;height:2.5px;background:var(--primary-dark);border-radius:3px;transition:var(--transition)}
.hamburger.active span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}
.hamburger.active span:nth-child(2){opacity:0}
.hamburger.active span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}

/* ─── Hero Slider ────────────────────────────────────────────── */
.hero{position:relative;height:520px;overflow:hidden;background:var(--primary-dark)}
.hero-slide{position:absolute;inset:0;opacity:0;transition:opacity 1s ease}
.hero-slide.active{opacity:1}
.hero-slide img{width:100%;height:100%;object-fit:cover}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(135deg,rgba(15,45,84,.82),rgba(27,77,142,.6))}
.hero-content{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:20px;z-index:2}
.hero-content h2{font-size:2.8rem;font-weight:800;color:#fff;margin-bottom:12px;text-shadow:0 2px 20px rgba(0,0,0,.3);letter-spacing:-.5px}
.hero-content p{font-size:1.15rem;color:rgba(255,255,255,.9);max-width:600px;font-weight:400}
.hero-dots{position:absolute;bottom:24px;left:50%;transform:translateX(-50%);display:flex;gap:10px;z-index:3}
.hero-dot{width:12px;height:12px;border-radius:50%;background:rgba(255,255,255,.4);cursor:pointer;transition:var(--transition)}
.hero-dot.active{background:var(--secondary);transform:scale(1.2)}

/* ─── Section Styles ─────────────────────────────────────────── */
.section{padding:70px 0}
.section-header{text-align:center;margin-bottom:48px}
.section-header h2{font-size:2rem;margin-bottom:10px;position:relative;display:inline-block}
.section-header h2::after{content:'';display:block;width:60px;height:4px;background:linear-gradient(90deg,var(--primary),var(--secondary));border-radius:4px;margin:12px auto 0}
.section-header p{color:var(--text-muted);font-size:1.05rem;max-width:600px;margin:0 auto}
.section-alt{background:var(--card)}

/* ─── Cards ──────────────────────────────────────────────────── */
.card{background:var(--card);border-radius:var(--radius-md);box-shadow:var(--shadow-sm);overflow:hidden;transition:var(--transition);border:1px solid var(--border)}
.card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.card-body{padding:24px}
.card-img{width:100%;height:220px;object-fit:cover}

/* Glass Card */
.glass-card{background:rgba(255,255,255,.7);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid rgba(255,255,255,.3);border-radius:var(--radius-md);padding:28px;transition:var(--transition)}
.glass-card:hover{background:rgba(255,255,255,.85);box-shadow:var(--shadow-md)}

/* ─── Stats Bar ──────────────────────────────────────────────── */
.stats-bar{background:linear-gradient(135deg,var(--primary),var(--primary-dark));padding:40px 0;margin-top:-1px}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.stat-item{text-align:center;color:#fff;padding:20px}
.stat-number{font-family:var(--font-heading);font-size:2.5rem;font-weight:800;color:var(--secondary);margin-bottom:4px}
.stat-label{font-size:.9rem;opacity:.85;font-weight:400}

/* ─── Welcome Section ────────────────────────────────────────── */
.welcome-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:center}
.welcome-img{border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow-lg);position:relative}
.welcome-img img{width:100%;height:380px;object-fit:cover}
.welcome-text h3{font-size:1.5rem;margin-bottom:16px;color:var(--primary-dark)}
.welcome-text p{color:var(--text-muted);margin-bottom:16px;line-height:1.8}

/* ─── Quick Links ────────────────────────────────────────────── */
.quick-links-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:20px}
.quick-link{display:flex;flex-direction:column;align-items:center;padding:32px 20px;border-radius:var(--radius-md);background:var(--card);border:1px solid var(--border);transition:var(--transition);text-align:center}
.quick-link:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:var(--primary)}
.quick-link i{font-size:2.2rem;color:var(--primary);margin-bottom:14px;transition:var(--transition)}
.quick-link:hover i{color:var(--secondary);transform:scale(1.15)}
.quick-link span{font-weight:600;font-size:.92rem;color:var(--text)}

/* ─── Downloads Section ──────────────────────────────────────── */
.download-categories{display:grid;gap:20px}
.download-category{border-radius:var(--radius-md);border:1px solid var(--border);overflow:hidden;background:var(--card)}
.download-category-header{padding:16px 24px;background:linear-gradient(135deg,rgba(var(--primary-rgb),.05),rgba(var(--primary-rgb),.02));cursor:pointer;display:flex;align-items:center;justify-content:space-between;font-weight:600;color:var(--primary-dark);transition:var(--transition)}
.download-category-header:hover{background:rgba(var(--primary-rgb),.08)}
.download-category-header i.toggle{transition:var(--transition);font-size:.85rem}
.download-category.open .toggle{transform:rotate(180deg)}
.download-category-body{padding:0 24px;max-height:0;overflow:hidden;transition:max-height .4s ease}
.download-category.open .download-category-body{max-height:600px;padding:0 24px 16px}
.download-item{display:flex;align-items:center;gap:14px;padding:12px 16px;border-radius:var(--radius-sm);transition:var(--transition);border-bottom:1px solid var(--border)}
.download-item:last-child{border-bottom:none}
.download-item:hover{background:rgba(var(--primary-rgb),.04)}
.download-item i{font-size:1.4rem;color:var(--danger);flex-shrink:0}
.download-item i.fa-file-word{color:var(--primary)}
.download-item i.fa-file-excel{color:var(--accent)}
.download-item span{flex:1;font-size:.92rem}
.download-item .btn-download{padding:6px 14px;font-size:.8rem}

/* ─── Buttons ────────────────────────────────────────────────── */
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 28px;border-radius:var(--radius-sm);font-weight:600;font-size:.92rem;transition:var(--transition);border:2px solid transparent;cursor:pointer;text-align:center;justify-content:center}
.btn-primary{background:var(--primary);color:#fff;border-color:var(--primary)}
.btn-primary:hover{background:var(--primary-light);border-color:var(--primary-light);color:#fff;transform:translateY(-2px);box-shadow:0 4px 15px rgba(var(--primary-rgb),.3)}
.btn-secondary{background:transparent;color:var(--primary);border-color:var(--primary)}
.btn-secondary:hover{background:var(--primary);color:#fff}
.btn-danger{background:var(--danger);color:#fff;border-color:var(--danger)}
.btn-danger:hover{background:#B91C1C;border-color:#B91C1C;color:#fff}
.btn-sm{padding:8px 18px;font-size:.82rem}
.btn-block{width:100%;display:flex}
.btn-download{background:rgba(var(--primary-rgb),.08);color:var(--primary);border:none;padding:8px 16px;font-size:.82rem}
.btn-download:hover{background:var(--primary);color:#fff}

/* ─── Staff Cards ────────────────────────────────────────────── */
.staff-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:24px}
.staff-card{text-align:center;padding:32px 24px;border-radius:var(--radius-md);background:var(--card);border:1px solid var(--border);transition:var(--transition)}
.staff-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.staff-photo{width:110px;height:110px;border-radius:50%;margin:0 auto 16px;overflow:hidden;border:4px solid var(--border);background:var(--surface)}
.staff-photo img{width:100%;height:100%;object-fit:cover}
.staff-photo .placeholder-avatar{width:100%;height:100%;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,var(--primary),var(--primary-light));color:#fff;font-size:2.2rem;font-weight:700;font-family:var(--font-heading)}
.staff-card h4{font-size:1.05rem;margin-bottom:4px;color:var(--primary-dark)}
.staff-card .designation{color:var(--primary);font-size:.85rem;font-weight:500;margin-bottom:8px}
.staff-card .qualification{color:var(--text-muted);font-size:.82rem}

/* Tabs */
.tabs{display:flex;gap:4px;margin-bottom:32px;justify-content:center;flex-wrap:wrap}
.tab-btn{padding:12px 28px;border-radius:50px;font-weight:600;font-size:.92rem;background:var(--card);color:var(--text-muted);border:2px solid var(--border);cursor:pointer;transition:var(--transition)}
.tab-btn:hover{border-color:var(--primary);color:var(--primary)}
.tab-btn.active{background:var(--primary);color:#fff;border-color:var(--primary)}
.tab-content{display:none}
.tab-content.active{display:block;animation:fadeUp .4s ease}

/* ─── Committee Accordion ────────────────────────────────────── */
.accordion{display:grid;gap:12px}
.accordion-item{border-radius:var(--radius-md);border:1px solid var(--border);overflow:hidden;background:var(--card)}
.accordion-header{padding:18px 24px;cursor:pointer;display:flex;align-items:center;justify-content:space-between;font-weight:600;font-size:1.02rem;color:var(--primary-dark);transition:var(--transition)}
.accordion-header:hover{background:rgba(var(--primary-rgb),.04)}
.accordion-header .acc-icon{width:32px;height:32px;border-radius:50%;background:rgba(var(--primary-rgb),.08);display:flex;align-items:center;justify-content:center;transition:var(--transition);flex-shrink:0}
.accordion-item.open .acc-icon{background:var(--primary);color:#fff;transform:rotate(180deg)}
.accordion-body{max-height:0;overflow:hidden;transition:max-height .4s ease}
.accordion-item.open .accordion-body{max-height:500px}
.accordion-body-inner{padding:0 24px 20px}
.committee-table{width:100%;border-collapse:collapse}
.committee-table tr{border-bottom:1px solid var(--border)}
.committee-table tr:last-child{border-bottom:none}
.committee-table td{padding:10px 12px;font-size:.92rem}
.committee-table td:first-child{font-weight:500;color:var(--text)}
.committee-table td:last-child{color:var(--primary);font-weight:600;text-align:right;white-space:nowrap}

/* ─── Gallery ────────────────────────────────────────────────── */
.gallery-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:16px}
.gallery-item{border-radius:var(--radius-md);overflow:hidden;cursor:pointer;position:relative;aspect-ratio:16/10}
.gallery-item img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.gallery-item:hover img{transform:scale(1.08)}
.gallery-item::after{content:'';position:absolute;inset:0;background:linear-gradient(to top,rgba(0,0,0,.4),transparent);opacity:0;transition:var(--transition)}
.gallery-item:hover::after{opacity:1}
.gallery-item .zoom-icon{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%) scale(0);color:#fff;font-size:1.5rem;z-index:2;transition:var(--transition)}
.gallery-item:hover .zoom-icon{transform:translate(-50%,-50%) scale(1)}

/* Lightbox */
.lightbox{position:fixed;inset:0;background:rgba(0,0,0,.92);z-index:10000;display:none;align-items:center;justify-content:center;padding:20px}
.lightbox.active{display:flex}
.lightbox img{max-width:90vw;max-height:85vh;border-radius:var(--radius-sm);object-fit:contain}
.lightbox-close{position:absolute;top:20px;right:30px;color:#fff;font-size:2rem;cursor:pointer;width:48px;height:48px;display:flex;align-items:center;justify-content:center;border-radius:50%;background:rgba(255,255,255,.1);transition:var(--transition)}
.lightbox-close:hover{background:rgba(255,255,255,.2)}
.lightbox-nav{position:absolute;top:50%;transform:translateY(-50%);color:#fff;font-size:1.5rem;cursor:pointer;width:52px;height:52px;display:flex;align-items:center;justify-content:center;border-radius:50%;background:rgba(255,255,255,.1);transition:var(--transition)}
.lightbox-nav:hover{background:rgba(255,255,255,.2)}
.lightbox-prev{left:20px}
.lightbox-next{right:20px}
.lightbox-counter{position:absolute;bottom:24px;left:50%;transform:translateX(-50%);color:rgba(255,255,255,.7);font-size:.9rem}

/* ─── Footer ─────────────────────────────────────────────────── */
.footer{background:var(--primary-dark);color:rgba(255,255,255,.85);padding:60px 0 0}
.footer-grid{display:grid;grid-template-columns:1.3fr 1fr 1fr;gap:40px;padding-bottom:40px;border-bottom:1px solid rgba(255,255,255,.1)}
.footer h4{color:#fff;font-size:1.1rem;margin-bottom:20px;position:relative}
.footer h4::after{content:'';display:block;width:40px;height:3px;background:var(--secondary);border-radius:3px;margin-top:8px}
.footer p{font-size:.9rem;line-height:1.8;margin-bottom:12px}
.footer-links{display:flex;flex-direction:column;gap:10px}
.footer-links a{color:rgba(255,255,255,.7);font-size:.9rem;display:flex;align-items:center;gap:8px;transition:var(--transition)}
.footer-links a:hover{color:var(--secondary);transform:translateX(4px)}
.footer-contact-item{display:flex;gap:12px;margin-bottom:14px;font-size:.9rem}
.footer-contact-item i{color:var(--secondary);margin-top:3px;width:18px;text-align:center}
.footer-bottom{padding:20px 0;text-align:center;font-size:.82rem;color:rgba(255,255,255,.5)}

/* ─── Alerts ─────────────────────────────────────────────────── */
.alert{padding:14px 20px;border-radius:var(--radius-sm);margin-bottom:16px;display:flex;align-items:center;gap:12px;font-size:.92rem;animation:slideDown .3s ease}
.alert-icon{font-size:1.1rem;flex-shrink:0}
.alert-close{margin-left:auto;background:none;border:none;font-size:1.2rem;cursor:pointer;opacity:.6;padding:0 4px}
.alert-close:hover{opacity:1}
.alert-success{background:var(--success-light);color:#166534;border:1px solid #BBF7D0}
.alert-error{background:var(--danger-light);color:#991B1B;border:1px solid #FECACA}
.alert-warning{background:var(--warning-light);color:#92400E;border:1px solid #FDE68A}
.alert-info{background:var(--info-light);color:#075985;border:1px solid #BAE6FD}

/* ─── Page Header (inner pages) ──────────────────────────────── */
.page-header{background:linear-gradient(135deg,var(--primary-dark),var(--primary));padding:50px 0;text-align:center;color:#fff;position:relative;overflow:hidden}
.page-header::before{content:'';position:absolute;top:-50%;right:-20%;width:400px;height:400px;border-radius:50%;background:rgba(255,255,255,.03)}
.page-header h2{font-size:2.2rem;font-weight:700;color:#fff;margin-bottom:8px}
.page-header .breadcrumb{font-size:.9rem;color:rgba(255,255,255,.7)}
.page-header .breadcrumb a{color:var(--secondary)}

/* ─── Error Page ─────────────────────────────────────────────── */
.error-page{text-align:center;padding:100px 20px}
.error-page h1{font-size:6rem;color:var(--primary);font-weight:800}
.error-page p{color:var(--text-muted);margin:16px 0 32px;font-size:1.1rem}

/* ─── Animations ─────────────────────────────────────────────── */
@keyframes fadeUp{from{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}
@keyframes slideDown{from{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
.fade-up{animation:fadeUp .6s ease both}

/* ─── Responsive ─────────────────────────────────────────────── */
@media(max-width:1024px){
  .footer-grid{grid-template-columns:1fr 1fr}
  .welcome-grid{grid-template-columns:1fr;gap:32px}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
  :root{--header-h:66px}
  .hamburger{display:flex}
  .nav-menu{position:fixed;top:0;right:-100%;width:280px;height:100vh;background:var(--card);flex-direction:column;padding:80px 24px 24px;box-shadow:var(--shadow-xl);transition:right .35s ease;z-index:1000;align-items:flex-start;gap:0}
  .nav-menu.open{right:0}
  .nav-menu a{width:100%;padding:14px 16px;border-radius:var(--radius-sm);font-size:1rem}
  .nav-menu a.active::after{display:none}
  .hero{height:380px}
  .hero-content h2{font-size:1.8rem}
  .hero-content p{font-size:.95rem}
  .section{padding:48px 0}
  .section-header h2{font-size:1.6rem}
  .footer-grid{grid-template-columns:1fr}
  .top-bar{display:none}
  .page-header h2{font-size:1.6rem}
  .staff-grid{grid-template-columns:repeat(auto-fill,minmax(240px,1fr))}
  .gallery-grid{grid-template-columns:repeat(auto-fill,minmax(240px,1fr))}
}
@media(max-width:480px){
  .stats-grid{grid-template-columns:1fr 1fr;gap:12px}
  .stat-number{font-size:1.8rem}
  .hero{height:320px}
  .hero-content h2{font-size:1.4rem}
  .quick-links-grid{grid-template-columns:repeat(2,1fr);gap:12px}
  .quick-link{padding:20px 12px}
  .staff-grid{grid-template-columns:1fr}
  .gallery-grid{grid-template-columns:1fr 1fr;gap:8px}
  .tabs{gap:6px}
  .tab-btn{padding:10px 18px;font-size:.85rem}
}

/* ─── Mobile Nav Overlay ─────────────────────────────────────── */
.nav-overlay{position:fixed;inset:0;background:rgba(0,0,0,.5);z-index:999;display:none}
.nav-overlay.active{display:block}

/* ─── Scroll to top ──────────────────────────────────────────── */
.scroll-top{position:fixed;bottom:24px;right:24px;width:46px;height:46px;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-size:1.1rem;box-shadow:var(--shadow-md);opacity:0;visibility:hidden;transition:var(--transition);z-index:999;cursor:pointer}
.scroll-top.visible{opacity:1;visibility:visible}
.scroll-top:hover{background:var(--primary-light);transform:translateY(-3px)}