/* ============================================
   CSS VARIABLES
   ============================================ */
:root {
    --primary: #1a3a8a;
    --primary-dark: #122b6a;
    --primary-light: #2b5bc9;
    --secondary: #0a1640;
    --accent: #6da4f7;
    --accent-light: #e8f0fe;
    --bg: #ffffff;
    --bg-light: #f6f8fc;
    --text: #1a1a2e;
    --text-secondary: #5a6078;
    --text-light: #8890a5;
    --border: #e2e6f0;
    --shadow: 0 2px 16px rgba(26,58,138,0.08);
    --shadow-lg: 0 8px 40px rgba(26,58,138,0.12);
    --shadow-xl: 0 20px 60px rgba(26,58,138,0.15);
    --radius: 12px;
    --radius-sm: 8px;
    --radius-lg: 20px;
    --transition: 0.3s ease;
    --max-width: 1200px;
}

/* ============================================
   RESET & BASE
   ============================================ */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{font-family:'Poppins',sans-serif;font-size:16px;line-height:1.7;color:var(--text);background:var(--bg);overflow-x:hidden}
a{text-decoration:none;color:inherit;transition:color var(--transition)}
img{max-width:100%;height:auto;display:block}
ul{list-style:none}
button{cursor:pointer;border:none;background:none;font-family:inherit}
input,select,textarea{font-family:inherit;font-size:inherit}
.container{max-width:var(--max-width);margin:0 auto;padding:0 20px}
.text-center{text-align:center}

/* ============================================
   BUTTONS
   ============================================ */
.btn{display:inline-flex;align-items:center;gap:8px;padding:14px 32px;border-radius:50px;font-weight:600;font-size:15px;transition:all var(--transition);border:2px solid transparent;cursor:pointer;white-space:nowrap}
.btn-primary{background:var(--primary);color:#fff;border-color:var(--primary)}
.btn-primary:hover{background:var(--primary-dark);border-color:var(--primary-dark);transform:translateY(-2px);box-shadow:0 8px 24px rgba(26,58,138,0.3)}
.btn-secondary{background:transparent;color:#fff;border-color:rgba(255,255,255,0.6)}
.btn-secondary:hover{background:#fff;color:var(--primary);border-color:#fff}
.btn-white{background:#fff;color:var(--primary);border-color:#fff}
.btn-white:hover{background:transparent;color:#fff;border-color:#fff}
.btn-outline{background:transparent;color:var(--primary);border-color:var(--primary)}
.btn-outline:hover{background:var(--primary);color:#fff}
.btn-outline-white{background:transparent;color:#fff;border-color:rgba(255,255,255,0.5)}
.btn-outline-white:hover{background:#fff;color:var(--primary);border-color:#fff}

/* ============================================
   SECTION UTILITIES
   ============================================ */
.section-eyebrow{display:inline-block;font-size:13px;font-weight:600;color:var(--primary);text-transform:uppercase;letter-spacing:2px;margin-bottom:12px}
.section-heading{font-size:40px;font-weight:700;color:var(--text);line-height:1.2;margin-bottom:16px}
.section-subtext{font-size:16px;color:var(--text-secondary);max-width:600px;margin:0 auto}
.section-header{margin-bottom:50px}

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes fadeUp{from{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
@keyframes slideLeft{from{opacity:0;transform:translateX(-40px)}to{opacity:1;transform:translateX(0)}}
@keyframes slideRight{from{opacity:0;transform:translateX(40px)}to{opacity:1;transform:translateX(0)}}
@keyframes scaleIn{from{opacity:0;transform:scale(0.9)}to{opacity:1;transform:scale(1)}}

.animate-fade-up{opacity:0;animation:fadeUp 0.7s ease forwards}
.animate-on-scroll{opacity:0;transform:translateY(30px);transition:all 0.7s ease}
.animate-on-scroll.visible{opacity:1;transform:translateY(0)}

/* ============================================
   TOP BAR
   ============================================ */
.top-bar{background:#f8f9fc;border-bottom:1px solid var(--border);font-size:13px;color:var(--text-secondary);position:relative;z-index:1001}
.top-bar-inner{display:flex;justify-content:space-between;align-items:center;padding-top:6px;padding-bottom:6px}
.top-bar-left{display:flex;align-items:center;gap:24px}
.top-bar-left a,.top-bar-right a{display:flex;align-items:center;gap:6px;color:var(--text-secondary);transition:color var(--transition)}
.top-bar-left a:hover,.top-bar-right a:hover{color:var(--primary)}
.top-bar-right{display:flex;align-items:center;gap:20px}

/* ============================================
   MAIN HEADER
   ============================================ */
.main-header{background:#fff;position:sticky;top:0;z-index:1000;box-shadow:0 2px 12px rgba(0,0,0,0.06);transition:box-shadow var(--transition)}
.main-header.scrolled{box-shadow:0 4px 20px rgba(0,0,0,0.1)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;padding-top:10px;padding-bottom:10px}
.logo{display:flex;align-items:center;gap:10px}
.logo-text{display:flex;flex-direction:column}
.logo-name{font-size:18px;font-weight:700;color:var(--secondary);line-height:1.2}
.logo-tagline{font-size:11px;color:var(--text-light);font-weight:400;letter-spacing:0.5px}
.desktop-nav ul{display:flex;align-items:center;gap:4px}
.desktop-nav li{position:relative}
.desktop-nav a{display:flex;align-items:center;gap:4px;padding:10px 14px;font-size:14px;font-weight:500;color:var(--text);border-radius:var(--radius-sm);transition:all var(--transition)}
.desktop-nav a:hover,.desktop-nav a.active{color:var(--primary)}
.desktop-nav a::after{content:'';position:absolute;bottom:4px;left:14px;right:14px;height:2px;background:var(--primary);transform:scaleX(0);transition:transform var(--transition);border-radius:1px}
.desktop-nav a:hover::after,.desktop-nav a.active::after{transform:scaleX(1)}
.has-dropdown:hover .dropdown{opacity:1;visibility:visible;transform:translateY(0)}
.dropdown{position:absolute;top:100%;left:0;background:#fff;min-width:240px;border-radius:var(--radius);box-shadow:var(--shadow-lg);padding:8px 0;opacity:0;visibility:hidden;transform:translateY(8px);transition:all var(--transition);z-index:100}
.dropdown li a{padding:10px 20px;font-size:14px;font-weight:400;border-radius:0;display:block;white-space:nowrap}
.dropdown li a:hover{background:var(--accent-light);color:var(--primary)}
.dropdown li a::after{display:none}
.nav-actions{display:flex;align-items:center;gap:12px}
.search-toggle{width:40px;height:40px;display:flex;align-items:center;justify-content:center;border-radius:50%;color:var(--text);transition:all var(--transition)}
.search-toggle:hover{background:var(--accent-light);color:var(--primary)}

/* Search Overlay */
.search-overlay{position:absolute;top:100%;left:0;right:0;background:#fff;padding:20px 0;box-shadow:var(--shadow-lg);transform:translateY(-10px);opacity:0;visibility:hidden;transition:all var(--transition);z-index:100}
.search-overlay.active{transform:translateY(0);opacity:1;visibility:visible}
.search-form{display:flex;gap:12px}
.search-form input{flex:1;padding:14px 20px;border:2px solid var(--border);border-radius:50px;font-size:15px;outline:none;transition:border-color var(--transition)}
.search-form input:focus{border-color:var(--primary)}
.search-form button{width:48px;height:48px;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;flex-shrink:0;transition:background var(--transition)}
.search-form button:hover{background:var(--primary-dark)}

/* Mobile Menu Toggle */
.mobile-menu-toggle{display:none;width:40px;height:40px;flex-direction:column;align-items:center;justify-content:center;gap:5px}
.mobile-menu-toggle span{width:24px;height:2.5px;background:var(--text);border-radius:2px;transition:all var(--transition)}
.mobile-menu-toggle.active span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}
.mobile-menu-toggle.active span:nth-child(2){opacity:0}
.mobile-menu-toggle.active span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}

/* ============================================
   MOBILE NAVIGATION
   ============================================ */
.mobile-nav{position:fixed;top:0;right:0;width:300px;max-width:85vw;height:100vh;background:#fff;z-index:2000;transform:translateX(100%);transition:transform 0.4s cubic-bezier(0.22,1,0.36,1);overflow-y:auto;box-shadow:-4px 0 30px rgba(0,0,0,0.15)}
.mobile-nav.active{transform:translateX(0)}
.mobile-nav-header{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid var(--border)}
.mobile-close{width:36px;height:36px;display:flex;align-items:center;justify-content:center;font-size:28px;color:var(--text);border-radius:50%;transition:background var(--transition)}
.mobile-close:hover{background:var(--accent-light)}
.mobile-menu{padding:10px 0}
.mobile-menu li a{display:flex;align-items:center;justify-content:space-between;padding:14px 24px;font-size:15px;font-weight:500;color:var(--text);border-bottom:1px solid var(--border)}
.mobile-menu li a:hover{color:var(--primary);background:var(--accent-light)}
.mobile-has-dropdown ul{display:none;background:var(--bg-light)}
.mobile-has-dropdown.open>ul{display:block}
.mobile-has-dropdown.open>a svg{transform:rotate(180deg)}
.mobile-has-dropdown a svg{transition:transform var(--transition)}
.mobile-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background:rgba(0,0,0,0.5);z-index:1999;opacity:0;visibility:hidden;transition:all 0.4s ease}
.mobile-overlay.active{opacity:1;visibility:visible}

/* ============================================
   HERO SECTION
   ============================================ */
.hero{position:relative;height:600px;overflow:hidden}
.hero-slides{position:absolute;inset:0}
.hero-slide{position:absolute;inset:0;background-size:cover;background-position:center;opacity:0;transition:opacity 1s ease}
.hero-slide.active{opacity:1}
.hero-overlay{position:absolute;inset:0;background:linear-gradient(135deg,rgba(10,22,64,0.85) 0%,rgba(26,58,138,0.65) 50%,rgba(10,22,64,0.75) 100%)}
.hero-content{position:relative;height:100%;display:flex;flex-direction:column;justify-content:center;max-width:700px;padding-left:40px}
.hero-eyebrow{display:inline-block;font-size:14px;font-weight:600;color:var(--accent);text-transform:uppercase;letter-spacing:3px;margin-bottom:16px}
.hero-title{font-size:56px;font-weight:800;color:#fff;line-height:1.1;margin-bottom:20px}
.hero-text{font-size:17px;color:rgba(255,255,255,0.85);margin-bottom:32px;line-height:1.7;max-width:520px}
.hero-buttons{display:flex;gap:16px;flex-wrap:wrap}
.hero-arrow{position:absolute;top:50%;transform:translateY(-50%);width:48px;height:48px;background:rgba(255,255,255,0.15);backdrop-filter:blur(4px);border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;transition:all var(--transition);z-index:5}
.hero-arrow:hover{background:rgba(255,255,255,0.3)}
.hero-arrow-left{left:24px}
.hero-arrow-right{right:24px}
.hero-dots{position:absolute;bottom:28px;left:50%;transform:translateX(-50%);display:flex;gap:10px;z-index:5}
.hero-dot{width:12px;height:12px;border-radius:50%;background:rgba(255,255,255,0.4);cursor:pointer;transition:all var(--transition)}
.hero-dot.active{background:#fff;transform:scale(1.2)}

/* ============================================
   FEATURE CARDS
   ============================================ */
.features{position:relative;z-index:10;margin-top:-80px;padding-bottom:0}
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:0;background:#fff;border-radius:var(--radius-lg);box-shadow:var(--shadow-xl);overflow:hidden}
.feature-card{padding:44px 36px;text-align:center;border-right:1px solid var(--border);transition:all var(--transition)}
.feature-card:last-child{border-right:none}
.feature-card:hover{background:var(--bg-light)}
.feature-icon{width:72px;height:72px;border-radius:50%;background:var(--accent-light);display:flex;align-items:center;justify-content:center;margin:0 auto 20px;transition:all var(--transition)}
.feature-card:hover .feature-icon{background:var(--primary);transform:scale(1.05)}
.feature-card:hover .feature-icon svg{stroke:#fff}
.feature-card h3{font-size:20px;font-weight:700;color:var(--text);margin-bottom:12px}
.feature-card p{font-size:15px;color:var(--text-secondary);margin-bottom:16px;line-height:1.7}
.feature-link{display:inline-flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--primary);transition:all var(--transition)}
.feature-link:hover{gap:10px}

/* ============================================
   ABOUT SECTION
   ============================================ */
.about{padding:100px 0;background:var(--bg)}
.about-inner{display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:center}
.about-images{position:relative}
.about-img-collage{position:relative;height:480px}
.about-img{position:absolute;overflow:hidden;border-radius:var(--radius);box-shadow:var(--shadow-lg)}
.about-img img{width:100%;height:100%;object-fit:cover;transition:transform 0.5s ease}
.about-img:hover img{transform:scale(1.05)}
.about-img-1{width:200px;height:160px;top:0;left:0;z-index:2}
.about-img-2{width:280px;height:300px;top:40px;right:0;z-index:3}
.about-img-3{width:220px;height:180px;bottom:0;left:40px;z-index:2}
.about-circle{position:absolute;border-radius:50%;border:2px dashed var(--accent);opacity:0.3}
.about-circle-1{width:200px;height:200px;top:-20px;right:40px}
.about-circle-2{width:140px;height:140px;bottom:20px;left:-10px}
.about-content .section-eyebrow{margin-bottom:10px}
.about-content .section-heading{margin-bottom:20px}
.about-content>p{font-size:16px;color:var(--text-secondary);margin-bottom:24px;line-height:1.8}
.about-list{margin-bottom:32px}
.about-list li{display:flex;align-items:center;gap:12px;padding:8px 0;font-size:15px;font-weight:500;color:var(--text)}

/* ============================================
   STATISTICS
   ============================================ */
.stats{padding:80px 0;background:var(--bg-light)}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:0}
.stat-item{text-align:center;padding:20px 16px;position:relative}
.stat-item:not(:last-child)::after{content:'';position:absolute;right:0;top:20%;height:60%;width:1px;background:var(--border)}
.stat-icon{margin-bottom:16px}
.stat-number{font-size:48px;font-weight:800;color:var(--primary);display:inline;line-height:1}
.stat-plus{font-size:32px;font-weight:700;color:var(--primary)}
.stat-label{font-size:14px;color:var(--text-secondary);margin-top:8px;font-weight:500}

/* ============================================
   COURSES
   ============================================ */
.courses{padding:100px 0;background:var(--bg)}
.courses-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:28px}
.course-card{background:#fff;border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:all var(--transition)}
.course-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-xl)}
.course-img{position:relative;height:200px;overflow:hidden}
.course-img img{width:100%;height:100%;object-fit:cover;transition:transform 0.5s ease}
.course-card:hover .course-img img{transform:scale(1.08)}
.course-badge{position:absolute;top:14px;left:14px;padding:5px 14px;background:var(--primary);color:#fff;font-size:12px;font-weight:600;border-radius:50px;letter-spacing:0.5px}
.course-body{padding:24px}
.course-body h3{font-size:18px;font-weight:700;color:var(--text);margin-bottom:10px;line-height:1.3}
.course-body p{font-size:14px;color:var(--text-secondary);margin-bottom:20px;line-height:1.7}

/* ============================================
   WHY CHOOSE US
   ============================================ */
.why-us{padding:100px 0;background:var(--bg-light)}
.why-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.why-card{background:#fff;padding:36px;border-radius:var(--radius);box-shadow:var(--shadow);transition:all var(--transition);text-align:center}
.why-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-xl)}
.why-icon{width:68px;height:68px;border-radius:50%;background:var(--accent-light);display:flex;align-items:center;justify-content:center;margin:0 auto 18px;transition:all var(--transition)}
.why-card:hover .why-icon{background:var(--primary)}
.why-card:hover .why-icon svg{stroke:#fff}
.why-card h3{font-size:18px;font-weight:700;color:var(--text);margin-bottom:10px}
.why-card p{font-size:14px;color:var(--text-secondary);line-height:1.7}

/* ============================================
   CAMPUS LIFE
   ============================================ */
.campus{padding:100px 0;background:var(--bg)}
.campus-grid{display:grid;grid-template-columns:repeat(3,1fr);grid-auto-rows:260px;gap:20px}
.campus-item{position:relative;overflow:hidden;border-radius:var(--radius);cursor:pointer}
.campus-item img{width:100%;height:100%;object-fit:cover;transition:transform 0.6s ease}
.campus-item:hover img{transform:scale(1.08)}
.campus-overlay{position:absolute;inset:0;background:linear-gradient(to top,rgba(10,22,64,0.8) 0%,transparent 60%);display:flex;align-items:flex-end;padding:24px;opacity:0;transition:opacity var(--transition)}
.campus-item:hover .campus-overlay{opacity:1}
.campus-overlay span{color:#fff;font-size:17px;font-weight:700}

/* ============================================
   CTA SECTION
   ============================================ */
.cta-section{position:relative;padding:100px 0;background:var(--primary);overflow:hidden}
.cta-bg{position:absolute;inset:0;background:url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1440 320"><path fill="rgba(255,255,255,0.05)" d="M0,192L48,197.3C96,203,192,213,288,202.7C384,192,480,160,576,165.3C672,171,768,213,864,218.7C960,224,1056,192,1152,165.3C1248,139,1344,117,1392,106.7L1440,96L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"/></svg>') no-repeat bottom;background-size:cover}
.cta-content{position:relative;text-align:center;z-index:1}
.cta-content h2{font-size:40px;font-weight:800;color:#fff;margin-bottom:16px;line-height:1.2}
.cta-content p{font-size:17px;color:rgba(255,255,255,0.85);margin-bottom:36px;max-width:550px;margin-left:auto;margin-right:auto}
.cta-buttons{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}

/* ============================================
   TESTIMONIALS
   ============================================ */
.testimonials{padding:100px 0;background:var(--bg-light)}
.testimonials-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px}
.testimonial-card{background:#fff;padding:36px;border-radius:var(--radius);box-shadow:var(--shadow);transition:all var(--transition);position:relative}
.testimonial-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.testimonial-quote{margin-bottom:16px}
.testimonial-card>p{font-size:15px;color:var(--text-secondary);line-height:1.8;margin-bottom:24px;font-style:italic}
.testimonial-author{display:flex;align-items:center;gap:14px}
.testimonial-avatar{width:48px;height:48px;border-radius:50%;background:var(--accent-light);color:var(--primary);font-weight:700;font-size:18px;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.testimonial-author strong{display:block;font-size:15px;color:var(--text)}
.testimonial-author span{font-size:13px;color:var(--text-light)}

/* ============================================
   CONTACT
   ============================================ */
.contact{padding:100px 0;background:var(--bg)}
.contact-grid{display:grid;grid-template-columns:1fr 1.2fr;gap:60px;align-items:start}
.contact-info .section-heading{margin-bottom:16px}
.contact-info>p{font-size:16px;color:var(--text-secondary);margin-bottom:32px;line-height:1.8}
.contact-details{display:flex;flex-direction:column;gap:20px}
.contact-detail{display:flex;align-items:flex-start;gap:14px}
.contact-detail svg{flex-shrink:0;margin-top:4px}
.contact-detail strong{display:block;font-size:14px;color:var(--text);margin-bottom:2px}
.contact-detail a,.contact-detail span{font-size:14px;color:var(--text-secondary)}
.contact-detail a:hover{color:var(--primary)}

/* Contact Form */
.contact-form-wrap{background:#fff;padding:40px;border-radius:var(--radius);box-shadow:var(--shadow-lg)}
.contact-form-wrap h3{font-size:22px;font-weight:700;color:var(--text);margin-bottom:24px}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:16px}
.form-group{position:relative}
.form-group.full-width{margin-bottom:16px}
.form-group input,.form-group select,.form-group textarea{width:100%;padding:14px 18px;border:1.5px solid var(--border);border-radius:var(--radius-sm);font-size:14px;color:var(--text);background:var(--bg-light);outline:none;transition:border-color var(--transition)}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{border-color:var(--primary);background:#fff}
.form-group textarea{resize:vertical;min-height:100px}
.form-group select{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%235a6078' stroke-width='2.5'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 16px center;padding-right:40px;cursor:pointer}
.form-message{margin-top:16px;padding:12px;border-radius:var(--radius-sm);font-size:14px;font-weight:500;display:none}
.form-message.success{display:block;background:#e6f9e6;color:#1a7a1a;border:1px solid #b3e6b3}
.form-message.error{display:block;background:#ffe6e6;color:#cc0000;border:1px solid #ffb3b3}

/* ============================================
   FOOTER
   ============================================ */
.footer{background:var(--secondary);color:rgba(255,255,255,0.7);padding-top:70px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:40px;padding-bottom:50px}
.footer-logo{margin-bottom:16px}
.footer-about p{font-size:14px;line-height:1.8;margin-bottom:20px}
.footer-socials{display:flex;gap:10px}
.footer-socials a{width:38px;height:38px;border-radius:50%;background:rgba(255,255,255,0.08);display:flex;align-items:center;justify-content:center;color:rgba(255,255,255,0.6);transition:all var(--transition)}
.footer-socials a:hover{background:var(--primary);color:#fff}
.footer-col h4{font-size:16px;font-weight:700;color:#fff;margin-bottom:20px}
.footer-col ul li{margin-bottom:10px}
.footer-col ul li a{font-size:14px;color:rgba(255,255,255,0.6);transition:color var(--transition)}
.footer-col ul li a:hover{color:var(--accent)}
.footer-col ul li span{font-size:14px;color:rgba(255,255,255,0.6)}
.footer-contact li{display:flex;align-items:center;gap:10px}
.footer-contact svg{flex-shrink:0;stroke:rgba(255,255,255,0.4)}
.footer-bottom{border-top:1px solid rgba(255,255,255,0.08);padding:20px 0}
.footer-bottom-inner{display:flex;justify-content:space-between;align-items:center}
.footer-bottom p{font-size:13px;color:rgba(255,255,255,0.4)}

/* ============================================
   BACK TO TOP
   ============================================ */
.back-to-top{position:fixed;bottom:30px;right:30px;width:48px;height:48px;background:var(--primary);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;box-shadow:0 4px 16px rgba(26,58,138,0.3);opacity:0;visibility:hidden;transform:translateY(20px);transition:all var(--transition);z-index:999}
.back-to-top.visible{opacity:1;visibility:visible;transform:translateY(0)}
.back-to-top:hover{background:var(--primary-dark);transform:translateY(-3px)}

/* ============================================
   RESPONSIVE - TABLET (768px - 1199px)
   ============================================ */
@media(max-width:1199px){
    .container{max-width:100%;padding:0 24px}
    .desktop-nav ul{gap:0}
    .desktop-nav a{padding:10px 10px;font-size:13px}
    .hero-title{font-size:46px}
    .section-heading{font-size:36px}
    .courses-grid{grid-template-columns:repeat(2,1fr)}
    .features-grid{grid-template-columns:repeat(3,1fr)}
    .feature-card{padding:36px 28px}
    .about-inner{gap:40px}
    .about-img-collage{height:400px}
    .stats-grid{grid-template-columns:repeat(2,1fr);gap:30px}
    .stat-item:not(:last-child)::after{display:none}
    .why-grid{grid-template-columns:repeat(2,1fr)}
    .testimonials-grid{grid-template-columns:repeat(2,1fr)}
    .testimonials-grid .testimonial-card:last-child{grid-column:1/3;max-width:50%;margin:0 auto}
    .footer-grid{grid-template-columns:repeat(2,1fr)}
    .campus-grid{grid-template-columns:repeat(2,1fr);grid-auto-rows:200px}
}

@media(max-width:991px){
    .desktop-nav{display:none}
    .mobile-menu-toggle{display:flex}
    .features-grid{grid-template-columns:1fr}
    .feature-card{border-right:none;border-bottom:1px solid var(--border);padding:32px 40px;text-align:left;display:grid;grid-template-columns:auto 1fr;gap:0 20px;align-items:center}
    .feature-card:last-child{border-bottom:none}
    .feature-icon{margin:0}
    .feature-card h3{margin-bottom:6px}
    .feature-card p{margin-bottom:8px}
    .feature-link{grid-column:2}
    .about-inner{grid-template-columns:1fr;text-align:center}
    .about-images{margin-bottom:20px}
    .about-img-collage{height:360px;margin:0 auto;max-width:480px}
    .about-list li{justify-content:center}
    .contact-grid{grid-template-columns:1fr}
}

/* ============================================
   RESPONSIVE - MOBILE (320px - 767px)
   ============================================ */
@media(max-width:767px){
    .top-bar-left{display:none}
    .desktop-nav{display:none}
    .mobile-menu-toggle{display:flex}
    .hero{height:500px}
    .hero-content{padding-left:0;max-width:100%}
    .hero-title{font-size:34px}
    .hero-text{font-size:15px}
    .hero-buttons{flex-direction:column;gap:12px}
    .hero-buttons .btn{width:100%;justify-content:center}
    .hero-arrow{width:40px;height:40px}
    .hero-arrow-left{left:12px}
    .hero-arrow-right{right:12px}
    .features{margin-top:-50px}
    .feature-card{grid-template-columns:1fr;text-align:center;padding:28px 24px}
    .feature-link{grid-column:1}
    .section-heading{font-size:30px}
    .section-header{margin-bottom:36px}
    .about{padding:70px 0}
    .about-img-collage{height:300px}
    .about-img-1{width:150px;height:120px}
    .about-img-2{width:200px;height:220px}
    .about-img-3{width:160px;height:140px}
    .stats{padding:60px 0}
    .stats-grid{grid-template-columns:repeat(2,1fr);gap:24px 0}
    .stat-number{font-size:36px}
    .stat-plus{font-size:24px}
    .courses{padding:70px 0}
    .courses-grid{grid-template-columns:1fr}
    .why-us{padding:70px 0}
    .why-grid{grid-template-columns:1fr}
    .campus{padding:70px 0}
    .campus-grid{grid-template-columns:1fr;grid-template-rows:auto}
    .campus-item{height:220px}
    .campus-item-1{grid-column:auto;grid-row:auto}
    .campus-overlay{opacity:1}
    .cta-section{padding:70px 0}
    .cta-content h2{font-size:28px}
    .testimonials{padding:70px 0}
    .testimonials-grid{grid-template-columns:1fr}
    .testimonials-grid .testimonial-card:last-child{grid-column:auto;max-width:100%}
    .contact{padding:70px 0}
    .form-row{grid-template-columns:1fr}
    .contact-form-wrap{padding:28px 20px}
    .footer{padding-top:50px}
    .footer-grid{grid-template-columns:1fr;gap:30px}
    .footer-bottom-inner{flex-direction:column;gap:8px;text-align:center}
    .back-to-top{width:42px;height:42px;bottom:20px;right:20px}
}

@media(max-width:480px){
    .hero{height:460px}
    .hero-title{font-size:28px}
    .hero-eyebrow{font-size:12px;letter-spacing:2px}
    .about-img-collage{height:260px;max-width:100%}
    .about-img-1{width:130px;height:105px}
    .about-img-2{width:170px;height:190px}
    .about-img-3{width:140px;height:115px}
    .stat-number{font-size:30px}
    .section-heading{font-size:26px}
    .cta-content h2{font-size:24px}
}