/* ================================================================
   CSS — Centre for Science Studies | Main Stylesheet
   ================================================================ */
:root {
  --blue:#2563eb;--blue-l:#3b82f6;--blue-d:#1d4ed8;--blue-pale:#dbeafe;
  --orange:#f97316;--orange-l:#fb923c;--dark:#0b1437;--dark2:#1e2a4a;
  --green:#16a34a;--green-l:#22c55e;--bg:#f0f4ff;--bg2:#e8eeff;
  --white:#fff;--gray:#6b7280;--gray-l:#f3f4f6;--border:rgba(37,99,235,.1);
  --shadow-sm:0 2px 8px rgba(37,99,235,.07);
  --shadow:0 8px 32px rgba(37,99,235,.1);
  --shadow-lg:0 24px 64px rgba(37,99,235,.16);
  --glass:rgba(255,255,255,.75);--r:16px;--r-lg:24px;
  --font:'Outfit',sans-serif;--font-s:'DM Serif Display',serif;
}
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:var(--font);background:var(--bg);color:var(--dark);overflow-x:hidden;line-height:1.6}
a{text-decoration:none;color:inherit}img{max-width:100%;display:block}
button{cursor:pointer;border:none;font-family:var(--font)}
h1,h2,h3,h4,h5{line-height:1.15;font-weight:700}
.container{max-width:1220px;margin:0 auto;padding:0 24px}
section{padding:80px 0}
.serif{font-family:var(--font-s)}
.gradient-text{background:linear-gradient(135deg,var(--blue),var(--orange));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}

/* Buttons */
.btn{display:inline-flex;align-items:center;gap:8px;padding:13px 26px;border-radius:50px;font-size:15px;font-weight:600;transition:all .3s;cursor:pointer;border:none}
.btn-primary{background:linear-gradient(135deg,var(--blue),var(--blue-d));color:#fff;box-shadow:0 4px 20px rgba(37,99,235,.3)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 8px 28px rgba(37,99,235,.4)}
.btn-secondary{background:#fff;color:var(--blue);border:2px solid var(--blue-pale)}
.btn-secondary:hover{background:var(--blue-pale);transform:translateY(-2px)}
.btn-orange{background:linear-gradient(135deg,var(--orange),#ea580c);color:#fff;box-shadow:0 4px 20px rgba(249,115,22,.3)}
.btn-orange:hover{transform:translateY(-2px);box-shadow:0 8px 28px rgba(249,115,22,.4)}
.btn-green{background:linear-gradient(135deg,var(--green),#15803d);color:#fff;box-shadow:0 4px 20px rgba(22,163,74,.3)}
.btn-sm{padding:9px 18px;font-size:13px}
.btn-lg{padding:16px 36px;font-size:17px}
.w-full{width:100%;justify-content:center}

/* Section labels */
.section-label{display:inline-flex;align-items:center;gap:8px;background:var(--blue-pale);color:var(--blue);padding:5px 16px;border-radius:50px;font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:.7px;margin-bottom:16px}
.section-label::before{content:'';width:6px;height:6px;background:var(--blue);border-radius:50%}
.section-head{text-align:center;max-width:640px;margin:0 auto 56px}
.section-head h2{font-size:clamp(28px,4vw,44px);font-weight:800;margin-bottom:14px}
.section-head p{font-size:17px;color:var(--gray)}

/* Backgrounds */
.bg-grid{background-image:linear-gradient(rgba(37,99,235,.03) 1px,transparent 1px),linear-gradient(90deg,rgba(37,99,235,.03) 1px,transparent 1px);background-size:44px 44px}
.bg-dark{background:linear-gradient(135deg,var(--dark),var(--dark2));color:#fff}

/* Orbs */
.orb{position:absolute;border-radius:50%;pointer-events:none;filter:blur(80px);opacity:.3}
.orb-blue{background:radial-gradient(circle,#2563eb,transparent)}
.orb-orange{background:radial-gradient(circle,#f97316,transparent)}
.orb-green{background:radial-gradient(circle,#16a34a,transparent)}
@keyframes float{0%,100%{transform:translateY(0) scale(1)}50%{transform:translateY(-24px) scale(1.04)}}
@keyframes float2{0%,100%{transform:translateY(0)}50%{transform:translateY(18px)}}

/* Glass Card */
.glass-card{background:var(--glass);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid rgba(255,255,255,.9);border-radius:var(--r-lg);box-shadow:var(--shadow);transition:transform .3s,box-shadow .3s}
.glass-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}

/* ===== NAVBAR ===== */
#navbar{position:fixed;top:0;left:0;right:0;z-index:9000;transition:all .3s;background:rgba(255,255,255,.85);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid rgba(37,99,235,.06)}
#navbar.scrolled{background:rgba(255,255,255,.96);box-shadow:0 4px 24px rgba(37,99,235,.08);border-bottom:1px solid rgba(37,99,235,.09)}
.nav-inner{height:70px;display:flex;align-items:center;justify-content:space-between;gap:16px}
.nav-logo{display:flex;align-items:center;gap:11px}
.nav-logo-icon{width:42px;height:42px;border-radius:11px;background:linear-gradient(135deg,var(--blue),var(--blue-d));display:flex;align-items:center;justify-content:center;font-size:20px;color:#fff;font-weight:900;box-shadow:0 4px 12px rgba(37,99,235,.3);flex-shrink:0}
.nav-logo-text strong{display:block;font-size:17px;font-weight:800;color:var(--dark);letter-spacing:-.3px}
.nav-logo-text span{display:block;font-size:10px;color:var(--gray);font-weight:500;letter-spacing:.2px}
.nav-links{display:flex;align-items:center;gap:2px;list-style:none}
.nav-links a{padding:7px 12px;border-radius:8px;font-size:13.5px;font-weight:500;color:var(--dark2);transition:all .2s;cursor:pointer;white-space:nowrap}
.nav-links a:hover,.nav-links a.active{color:var(--blue);background:var(--blue-pale)}
.nav-dropdown{position:relative}
.nav-dropdown:hover .dropdown-menu,.nav-dropdown:focus-within .dropdown-menu{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
.dropdown-menu{position:absolute;top:calc(100% + 10px);left:50%;transform:translateX(-50%) translateY(8px);background:#fff;border-radius:16px;padding:8px;box-shadow:0 20px 60px rgba(0,0,0,.1);min-width:220px;opacity:0;visibility:hidden;transition:all .25s;border:1px solid rgba(37,99,235,.07);z-index:200}
.dropdown-menu a{display:flex;align-items:center;gap:10px;padding:10px 14px;border-radius:10px;font-size:14px;color:var(--dark2);transition:all .2s;width:100%}
.dropdown-menu a:hover{background:var(--bg);color:var(--blue)}
.dropdown-menu a .dm-icon{font-size:18px}
.dropdown-menu a small{display:block;font-size:11px;color:var(--gray);font-weight:400;margin-top:1px}
.nav-right{display:flex;align-items:center;gap:10px;flex-shrink:0}
.nav-admit-btn{padding:8px 16px;font-size:13px}
.nav-portal-btn{background:linear-gradient(135deg,var(--blue),var(--blue-d));color:#fff;padding:9px 18px;border-radius:50px;font-size:13px;font-weight:600;box-shadow:0 4px 12px rgba(37,99,235,.28);transition:all .3s;white-space:nowrap}
.nav-portal-btn:hover{transform:translateY(-1px);box-shadow:0 6px 20px rgba(37,99,235,.38)}
.hamburger{display:none;flex-direction:column;gap:5px;cursor:pointer;padding:8px;background:none;border:none}
.hamburger span{display:block;width:22px;height:2px;background:var(--dark);border-radius:2px;transition:all .3s}
.hamburger.open span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}
.hamburger.open span:nth-child(2){opacity:0}
.hamburger.open span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}

/* Mobile Menu */
#mobile-menu{display:none;position:fixed;inset:0;z-index:999;background:#fff;padding:80px 24px 40px;overflow-y:auto;transform:translateX(-100%);transition:transform .35s cubic-bezier(.4,0,.2,1)}
#mobile-menu.open{display:block;transform:translateX(0)}
.mobile-close{position:absolute;top:20px;right:20px;background:var(--bg);border:none;width:40px;height:40px;border-radius:50%;font-size:18px;cursor:pointer;display:flex;align-items:center;justify-content:center}
.mobile-nav-links{list-style:none;display:flex;flex-direction:column;gap:4px}
.mobile-nav-links a{display:block;padding:13px 16px;border-radius:12px;font-size:15px;font-weight:500;color:var(--dark);transition:all .2s}
.mobile-nav-links a:hover{background:var(--bg);color:var(--blue)}
.mobile-section-label{font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:1px;color:var(--gray);padding:16px 16px 6px;margin-top:4px}
.mobile-portal-btn{display:block;background:linear-gradient(135deg,var(--blue),var(--blue-d));color:#fff !important;text-align:center;border-radius:12px;font-weight:700 !important}
.mobile-overlay{display:none;position:fixed;inset:0;z-index:998;background:rgba(11,20,55,.5)}
.mobile-overlay.open{display:block}

/* ===== HERO ===== */
.hero{min-height:100vh;position:relative;overflow:hidden;display:flex;align-items:center;padding-top:70px}
.hero-bg{position:absolute;inset:0;background:linear-gradient(160deg,#f0f4ff 0%,#e8eeff 45%,#f5f0ff 100%)}
.hero-inner{display:grid;grid-template-columns:1fr 440px;gap:48px;align-items:start;width:100%;position:relative;z-index:2;padding:90px 0 60px}
.hero-content{position:relative;z-index:2;max-width:100%}
.hero-badge{display:inline-flex;align-items:center;gap:8px;background:#fff;border:1px solid var(--blue-pale);border-radius:50px;padding:7px 18px;margin-bottom:28px;font-size:13px;font-weight:600;color:var(--blue);box-shadow:var(--shadow-sm);animation:fadeUp .6s ease both}
.hero-badge-dot{width:8px;height:8px;background:var(--green);border-radius:50%;animation:pulse 1.5s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.3}}
.hero h1{font-size:clamp(38px,5vw,66px);font-weight:900;line-height:1.07;color:var(--dark);margin-bottom:22px;animation:fadeUp .6s .1s ease both}
.hero h1 em{font-family:var(--font-s);font-style:italic;color:var(--orange)}
.hero-desc{font-size:18px;color:var(--gray);margin-bottom:34px;max-width:540px;animation:fadeUp .6s .2s ease both}
.hero-btns{display:flex;gap:14px;flex-wrap:wrap;animation:fadeUp .6s .3s ease both}
.hero-trust{margin-top:44px;display:flex;align-items:center;gap:20px;flex-wrap:wrap;animation:fadeUp .6s .4s ease both}
.hero-avatars{display:flex}
.hero-avatars span{width:36px;height:36px;border-radius:50%;border:3px solid #fff;margin-left:-10px;background:linear-gradient(135deg,var(--blue),var(--orange));display:flex;align-items:center;justify-content:center;font-size:14px}
.hero-avatars span:first-child{margin-left:0}
.hero-trust-text{font-size:14px;color:var(--gray)}
.hero-trust-text strong{color:var(--dark);display:block}

/* Hero 3D visual */
.hero-visual{width:100%;z-index:2;animation:fadeRight .8s .3s ease both;margin-top:0}
@keyframes fadeRight{from{opacity:0;transform:translateX(30px)}to{opacity:1;transform:translateX(0)}}
.hero-card{background:#fff;border-radius:22px;box-shadow:0 32px 80px rgba(37,99,235,.14),0 0 0 1px rgba(37,99,235,.05);padding:24px;margin-bottom:14px;transform:perspective(900px) rotateY(-6deg) rotateX(3deg);transition:transform .5s}
.hero-card:hover{transform:perspective(900px) rotateY(-2deg) rotateX(1deg)}
.hero-card-mini{background:#fff;border-radius:14px;box-shadow:var(--shadow);padding:14px 18px;display:flex;align-items:center;gap:12px;margin-bottom:12px;transform:perspective(700px) rotateY(-9deg) rotateX(2deg)}
.hc-stat{text-align:center}
.hc-stat .n{font-size:26px;font-weight:900;color:var(--blue)}
.hc-stat .l{font-size:11px;color:var(--gray)}
.hc-stats-row{display:flex;gap:20px;margin-top:12px}

@keyframes fadeUp{from{opacity:0;transform:translateY(22px)}to{opacity:1;transform:translateY(0)}}

/* Trust strip */
.trust-strip{background:#fff;border-top:1px solid var(--border);border-bottom:1px solid var(--border);padding:18px 0;overflow:hidden}
.trust-strip-track{display:flex;gap:40px;animation:marquee 28s linear infinite;white-space:nowrap}
.trust-item{display:flex;align-items:center;gap:10px;flex-shrink:0}
.trust-item .ti-icon{font-size:18px}
.trust-item .ti-text{font-size:13px;font-weight:600;color:var(--dark2)}
@keyframes marquee{0%{transform:translateX(0)}100%{transform:translateX(-50%)}}

/* Stats counter section */
.stats-section{background:linear-gradient(135deg,var(--dark),var(--dark2))}
.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:2px;background:rgba(255,255,255,.04);border-radius:24px;overflow:hidden}
.stat-box{padding:40px 28px;text-align:center;background:rgba(255,255,255,.02);border:1px solid rgba(255,255,255,.05);transition:background .3s}
.stat-box:hover{background:rgba(255,255,255,.05)}
.stat-box .num{font-size:clamp(38px,4vw,54px);font-weight:900;display:block}
.stat-box .num.n-blue{color:#60a5fa}
.stat-box .num.n-orange{color:#fb923c}
.stat-box .num.n-white{color:#ffffff}
.stat-box .num.n-green{color:#4ade80}
.stat-box .s-label{font-size:14px;color:rgba(255,255,255,.55);margin-top:8px;font-weight:500}
.stat-box .s-sub{font-size:12px;color:rgba(255,255,255,.3);margin-top:4px}

/* Course cards */
.courses-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.course-card{background:#fff;border-radius:var(--r-lg);border:1px solid var(--border);overflow:hidden;transition:all .3s;cursor:pointer;position:relative}
.course-card:hover{transform:translateY(-8px);box-shadow:var(--shadow-lg);border-color:var(--blue)}
.course-card-header{padding:28px 28px 20px}
.course-icon{width:54px;height:54px;border-radius:15px;display:flex;align-items:center;justify-content:center;font-size:24px;margin-bottom:16px}
.ci-blue{background:#dbeafe}.ci-green{background:#dcfce7}.ci-purple{background:#ede9fe}.ci-orange{background:#ffedd5}
.course-card h3{font-size:19px;font-weight:700;margin-bottom:8px}
.course-card p{font-size:14px;color:var(--gray);line-height:1.6}
.course-tags{display:flex;flex-wrap:wrap;gap:7px;margin-top:14px}
.course-tag{font-size:11px;font-weight:700;padding:4px 10px;border-radius:50px;background:var(--blue-pale);color:var(--blue)}
.course-tag.green{background:#dcfce7;color:var(--green)}
.course-tag.purple{background:#ede9fe;color:#7c3aed}
.course-tag.orange{background:#ffedd5;color:var(--orange)}
.course-card-footer{padding:16px 28px;background:var(--gray-l);display:flex;justify-content:space-between;align-items:center;border-top:1px solid var(--border)}
.course-fee{font-size:18px;font-weight:800;color:var(--dark)}
.course-fee span{font-size:12px;color:var(--gray);font-weight:400}
.course-badge{position:absolute;top:14px;right:14px;background:linear-gradient(135deg,var(--orange),#ea580c);color:#fff;font-size:10px;font-weight:800;padding:4px 10px;border-radius:50px;text-transform:uppercase;letter-spacing:.5px}

/* Why CSS section */
.why-grid{display:grid;grid-template-columns:1fr 1fr;gap:72px;align-items:center}
.why-features{display:flex;flex-direction:column;gap:16px}
.why-feat{display:flex;gap:14px;padding:18px;background:var(--bg);border-radius:14px;border:1px solid var(--border);transition:all .3s}
.why-feat:hover{background:#fff;box-shadow:var(--shadow);transform:translateX(4px)}
.wf-icon{width:46px;height:46px;border-radius:13px;background:linear-gradient(135deg,var(--blue),var(--blue-d));display:flex;align-items:center;justify-content:center;font-size:21px;flex-shrink:0;box-shadow:0 4px 12px rgba(37,99,235,.2)}
.wf-text h4{font-size:15px;font-weight:700;margin-bottom:5px}
.wf-text p{font-size:13px;color:var(--gray);line-height:1.5}
.why-visual-main{background:linear-gradient(135deg,var(--dark),var(--dark2));border-radius:26px;padding:44px 38px;color:#fff;box-shadow:var(--shadow-lg);position:relative;overflow:hidden}
.why-visual-main::before{content:'';position:absolute;width:300px;height:300px;border-radius:50%;background:rgba(37,99,235,.08);top:-80px;right:-60px}
.why-visual-main h3{font-size:26px;font-weight:800;margin-bottom:8px;position:relative}
.why-visual-main p{color:rgba(255,255,255,.6);font-size:15px;margin-bottom:28px;position:relative}
.alumni-badge{display:inline-flex;align-items:center;gap:10px;background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.13);border-radius:12px;padding:12px 16px;margin-bottom:12px;position:relative;width:100%}
.ab-info strong{display:block;font-size:14px;font-weight:700}
.ab-info span{font-size:12px;color:rgba(255,255,255,.55)}
.iit-badge{display:inline-flex;align-items:center;gap:6px;background:linear-gradient(135deg,var(--blue),var(--blue-d));color:#fff;font-size:11px;font-weight:700;padding:5px 12px;border-radius:50px}

/* Results/Toppers */
.topper-card{background:#fff;border-radius:18px;padding:22px;border:1px solid var(--border);text-align:center;transition:all .3s;cursor:pointer}
.topper-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg);border-color:var(--blue)}
.topper-avatar{width:68px;height:68px;border-radius:50%;margin:0 auto 14px;display:flex;align-items:center;justify-content:center;font-size:30px;position:relative}
.topper-rank{position:absolute;bottom:-3px;right:-3px;background:linear-gradient(135deg,var(--orange),#ea580c);color:#fff;font-size:9px;font-weight:800;padding:2px 7px;border-radius:6px;border:2px solid #fff}
.topper-card h4{font-size:15px;font-weight:700;margin-bottom:4px}
.topper-card .college{font-size:13px;color:var(--blue);font-weight:600;margin-bottom:3px}
.topper-card .year{font-size:11px;color:var(--gray)}
.exam-badge{display:inline-block;font-size:10px;font-weight:700;padding:3px 10px;border-radius:50px;margin-top:8px}
.eb-jee{background:#dbeafe;color:var(--blue)}
.eb-neet{background:#dcfce7;color:var(--green)}
.eb-cbse{background:#fef9c3;color:#854d0e}

/* YouTube banner */
.yt-banner{background:linear-gradient(135deg,#e00,#c00);color:#fff;padding:64px 0}
.yt-inner{display:flex;align-items:center;gap:48px;flex-wrap:wrap}
.yt-info{flex:1;min-width:280px}
.yt-label{font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:1px;opacity:.7;margin-bottom:8px}
.yt-info h2{font-size:clamp(26px,4vw,38px);font-weight:800;margin-bottom:10px}
.yt-info p{opacity:.8;font-size:16px;margin-bottom:22px}
.yt-stats{display:flex;gap:28px;margin-bottom:22px;flex-wrap:wrap}
.yt-stat .n{font-size:26px;font-weight:800}
.yt-stat .l{font-size:11px;opacity:.65}
.yt-btn{display:inline-flex;align-items:center;gap:10px;background:#fff;color:#c00;padding:13px 26px;border-radius:50px;font-size:15px;font-weight:700;transition:all .3s;box-shadow:0 4px 20px rgba(0,0,0,.2)}
.yt-btn:hover{transform:translateY(-2px);box-shadow:0 8px 28px rgba(0,0,0,.28)}
.yt-preview{width:360px;border-radius:16px;overflow:hidden;box-shadow:0 20px 60px rgba(0,0,0,.3);background:#000;flex-shrink:0}
.yt-preview-inner{position:relative;padding-bottom:56.25%;background:linear-gradient(135deg,#111,#222)}
.yt-preview-play{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;cursor:pointer}
.yt-preview-play span{font-size:60px}
.yt-preview-text{color:#fff;font-size:13px;font-weight:600;text-align:center;opacity:.8;padding:0 16px}

/* Testimonials */
.testimonial-card{background:#fff;border-radius:18px;padding:26px;border:1px solid var(--border);position:relative;overflow:hidden}
.tc-quote{font-size:72px;color:var(--blue-pale);position:absolute;top:8px;left:14px;line-height:1;font-family:var(--font-s);font-style:italic}
.tc-stars{color:#f59e0b;font-size:15px;margin-bottom:10px}
.tc-text{font-size:14px;color:var(--gray);line-height:1.7;margin-bottom:18px;padding-top:6px;position:relative}
.tc-author{display:flex;align-items:center;gap:11px}
.tc-avatar{width:42px;height:42px;border-radius:50%;background:linear-gradient(135deg,var(--blue),var(--orange));display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:700;color:#fff;flex-shrink:0}
.tc-name{font-size:13px;font-weight:700;display:block}
.tc-role{font-size:11px;color:var(--gray)}

/* Grid utilities */
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:24px}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.gap-32{gap:32px}.gap-48{gap:48px}

/* Page hero */
.page-hero{background:linear-gradient(160deg,var(--dark),var(--dark2));color:#fff;padding:130px 0 64px;position:relative;overflow:hidden}
.page-hero-orb1{position:absolute;width:400px;height:400px;border-radius:50%;background:rgba(37,99,235,.15);top:-100px;right:-80px}
.page-hero-orb2{position:absolute;width:300px;height:300px;border-radius:50%;background:rgba(249,115,22,.1);bottom:-80px;left:-60px}
.page-hero-content{position:relative;z-index:2}
.page-hero h1{font-size:clamp(32px,5vw,52px);font-weight:800;color:#fff;margin-bottom:12px}
.page-hero p{font-size:17px;opacity:.7;max-width:520px}
.breadcrumb{display:flex;align-items:center;gap:8px;font-size:12px;opacity:.6;margin-bottom:16px;list-style:none}
.breadcrumb li+li::before{content:'/';margin-right:8px}
.breadcrumb a{opacity:.8}

/* Course detail pages */
.course-detail-hero{padding:130px 0 56px;position:relative;overflow:hidden}
.cdh-jee{background:linear-gradient(160deg,#eff6ff,#dbeafe)}
.cdh-neet{background:linear-gradient(160deg,#f0fdf4,#dcfce7)}
.cdh-physics{background:linear-gradient(160deg,#faf5ff,#ede9fe)}
.cdh-cbse{background:linear-gradient(160deg,#fff7ed,#ffedd5)}
.course-detail-inner{display:grid;grid-template-columns:1.6fr 1fr;gap:52px;align-items:start}
.course-feats{list-style:none;display:flex;flex-direction:column;gap:11px;margin:22px 0}
.course-feats li{display:flex;align-items:center;gap:12px;font-size:15px}
.course-feats li::before{content:'✓';width:22px;height:22px;background:var(--green);color:#fff;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:11px;font-weight:800;flex-shrink:0}
.fee-card{background:#fff;border-radius:20px;padding:30px;box-shadow:var(--shadow-lg);position:sticky;top:90px}
.fee-card .fee-top{font-size:11px;font-weight:800;text-transform:uppercase;letter-spacing:.8px;margin-bottom:6px}
.fee-card .fee-amount{font-size:38px;font-weight:900;color:var(--dark)}
.fee-card .fee-amount span{font-size:15px;color:var(--gray);font-weight:400}
.fee-card .fee-emi{font-size:13px;color:var(--green);font-weight:600;margin-top:4px}
.fee-includes{list-style:none;margin:18px 0;display:flex;flex-direction:column;gap:9px}
.fee-includes li{font-size:14px;display:flex;align-items:center;gap:8px}
.fee-includes li::before{content:'📦';font-size:14px}
.schedule-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin:22px 0}
.sch-item{background:var(--bg);border-radius:11px;padding:14px;border:1px solid var(--border)}
.sch-item .day{font-size:11px;font-weight:700;text-transform:uppercase;color:var(--blue);margin-bottom:4px}
.sch-item .time{font-size:14px;font-weight:600}
.topics-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin:20px 0}
.topic-pill{background:#fff;border:1px solid var(--border);border-radius:9px;padding:9px 13px;font-size:12px;font-weight:600;display:flex;align-items:center;gap:7px}
.topic-pill::before{content:'⚡';font-size:13px}

/* Faculty cards */
.faculty-card{background:#fff;border-radius:18px;padding:26px;text-align:center;border:1px solid var(--border);transition:all .3s}
.faculty-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.fac-emoji{font-size:52px;margin-bottom:14px;display:block}
.faculty-card h3{font-size:17px;font-weight:700;margin-bottom:4px}
.fac-subject{font-size:13px;color:var(--blue);font-weight:600;margin-bottom:6px}
.fac-exp{font-size:13px;color:var(--gray);margin-bottom:11px}
.fac-bio{font-size:13px;color:var(--gray);line-height:1.6}
.iit-badge-sm{display:inline-flex;align-items:center;gap:5px;background:linear-gradient(135deg,#dbeafe,#bfdbfe);color:var(--blue-d);font-size:10px;font-weight:700;padding:4px 10px;border-radius:50px;margin-top:8px}

/* Reviews page */
.reviews-summary{display:flex;align-items:flex-start;gap:48px;flex-wrap:wrap;margin-bottom:48px}
.rating-big .rb-num{font-size:72px;font-weight:900;color:var(--dark);line-height:1}
.rating-big .rb-stars{font-size:26px;color:#f59e0b;margin:6px 0}
.rating-big .rb-count{font-size:14px;color:var(--gray)}
.rating-bars{flex:1;min-width:200px;display:flex;flex-direction:column;gap:7px}
.rb-row{display:flex;align-items:center;gap:10px}
.rb-row span{font-size:12px;color:var(--gray);width:36px;text-align:right}
.rb-track{flex:1;height:8px;background:var(--border);border-radius:4px;overflow:hidden}
.rb-fill{height:100%;background:#f59e0b;border-radius:4px;transition:width 1s ease}
.rb-count{width:28px;font-size:12px;color:var(--gray)}
.review-card{background:#fff;border-radius:14px;padding:22px;border:1px solid var(--border)}
.review-header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:11px}
.reviewer{display:flex;align-items:center;gap:11px}
.reviewer-avatar{width:42px;height:42px;border-radius:50%;background:linear-gradient(135deg,var(--blue),var(--orange));display:flex;align-items:center;justify-content:center;font-size:17px;color:#fff;font-weight:700;flex-shrink:0}
.reviewer-name{display:block;font-size:14px;font-weight:700}
.reviewer-time{font-size:11px;color:var(--gray)}
.review-stars{color:#f59e0b;font-size:13px}
.review-text{font-size:14px;color:var(--dark2);line-height:1.7}
.api-config-box{background:var(--bg);border:2px dashed var(--border);border-radius:14px;padding:22px;margin-bottom:28px}
.api-config-box h4{font-size:14px;font-weight:700;margin-bottom:14px;color:var(--dark2)}
.api-row{display:flex;gap:10px;margin-bottom:10px}
.api-row input{flex:1;padding:10px 14px;border:2px solid var(--border);border-radius:10px;font-size:14px;outline:none;font-family:var(--font);background:#fff}
.api-row input:focus{border-color:var(--blue)}
.api-row .btn{white-space:nowrap}

/* Videos page */
.filter-row{display:flex;gap:9px;flex-wrap:wrap;margin-bottom:28px}
.filter-btn{padding:8px 18px;border-radius:50px;border:2px solid var(--border);font-size:13px;font-weight:600;background:#fff;color:var(--gray);cursor:pointer;transition:all .2s;font-family:var(--font)}
.filter-btn.active,.filter-btn:hover{background:var(--blue);border-color:var(--blue);color:#fff}
.video-card{background:#fff;border-radius:14px;overflow:hidden;border:1px solid var(--border);transition:all .3s;cursor:pointer}
.video-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.video-thumb{position:relative;background:#111;padding-bottom:56.25%;overflow:hidden}
.video-thumb img,.video-thumb .thumb-bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.video-thumb .thumb-bg{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;background:linear-gradient(135deg,#111,#222)}
.video-thumb .thumb-bg span{font-size:38px}
.video-thumb .thumb-bg .vt-title{font-size:11px;color:rgba(255,255,255,.5);text-align:center;padding:0 12px}
.video-overlay{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;background:rgba(0,0,0,.3);opacity:0;transition:opacity .2s;font-size:44px}
.video-card:hover .video-overlay{opacity:1}
.video-duration{position:absolute;bottom:8px;right:8px;background:rgba(0,0,0,.75);color:#fff;font-size:10px;font-weight:700;padding:2px 7px;border-radius:4px}
.video-info{padding:14px}
.subject-tag{display:inline-block;font-size:10px;font-weight:700;padding:2px 8px;border-radius:50px;text-transform:uppercase;margin-bottom:6px}
.st-physics{background:#dbeafe;color:var(--blue)}
.st-chemistry{background:#dcfce7;color:var(--green)}
.st-math{background:#fef9c3;color:#854d0e}
.st-biology{background:#ffe4e6;color:#9f1239}
.st-jee{background:#ede9fe;color:#7c3aed}
.st-neet{background:#ffedd5;color:var(--orange)}
.video-title{font-size:13px;font-weight:600;line-height:1.4;margin-bottom:6px}
.video-meta{display:flex;justify-content:space-between;font-size:11px;color:var(--gray)}

/* Video modal */
.modal-overlay{display:none;position:fixed;inset:0;z-index:9999;background:rgba(0,0,0,.85);align-items:center;justify-content:center}
.modal-overlay.open{display:flex;animation:fadeIn .25s ease}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
.video-modal{background:#000;border-radius:14px;overflow:hidden;width:90%;max-width:900px;position:relative;box-shadow:0 40px 100px rgba(0,0,0,.5)}
.vm-close{position:absolute;top:10px;right:10px;z-index:1;width:34px;height:34px;border-radius:50%;background:rgba(255,255,255,.18);color:#fff;display:flex;align-items:center;justify-content:center;font-size:17px;cursor:pointer;border:none;transition:background .2s}
.vm-close:hover{background:rgba(255,255,255,.28)}
.vm-ratio{position:relative;padding-bottom:56.25%}
.vm-ratio iframe{position:absolute;inset:0;width:100%;height:100%;border:none}

/* Admission page */
.steps-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-bottom:52px}
.step-card{text-align:center;position:relative}
.step-card::after{content:'→';position:absolute;right:-12px;top:22px;font-size:22px;color:var(--blue-pale)}
.step-card:last-child::after{display:none}
.step-num{width:54px;height:54px;border-radius:50%;background:linear-gradient(135deg,var(--blue),var(--blue-d));color:#fff;font-size:20px;font-weight:800;display:flex;align-items:center;justify-content:center;margin:0 auto 14px;box-shadow:0 4px 16px rgba(37,99,235,.3)}
.step-card h4{font-size:14px;font-weight:700;margin-bottom:6px}
.step-card p{font-size:13px;color:var(--gray)}

/* Seats table */
.seats-table{width:100%;border-collapse:collapse;border-radius:16px;overflow:hidden;box-shadow:var(--shadow)}
.seats-table th{background:linear-gradient(135deg,var(--dark),var(--dark2));color:#fff;padding:14px 18px;text-align:left;font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:.4px}
.seats-table td{padding:13px 18px;font-size:14px;border-bottom:1px solid var(--border)}
.seats-table tr:last-child td{border-bottom:none}
.seats-table tr:nth-child(even) td{background:var(--gray-l)}
.seats-avail{color:var(--green);font-weight:700}
.seats-full{color:#ef4444;font-weight:700}
.seats-few{color:var(--orange);font-weight:700}

/* Contact */
.contact-grid{display:grid;grid-template-columns:1fr 1.5fr;gap:48px}
.contact-item{display:flex;gap:14px;margin-bottom:22px}
.c-icon{width:46px;height:46px;border-radius:13px;background:var(--blue-pale);color:var(--blue);display:flex;align-items:center;justify-content:center;font-size:19px;flex-shrink:0}
.c-info h4{font-size:14px;font-weight:700;margin-bottom:3px}
.c-info p,.c-info a{font-size:14px;color:var(--gray)}
.c-info a:hover{color:var(--blue)}
.map-embed{border-radius:16px;overflow:hidden;box-shadow:var(--shadow);height:280px}
.map-embed iframe{width:100%;height:100%;border:none}

/* Forms */
.inquiry-form{max-width:700px;margin:0 auto}
.form-box{background:var(--bg);border-radius:22px;padding:38px;border:1px solid var(--border)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.form-group{display:flex;flex-direction:column;gap:6px}
.form-group.full{grid-column:1/-1}
.form-group label{font-size:12px;font-weight:700;color:var(--dark2);text-transform:uppercase;letter-spacing:.4px}
.form-group input,.form-group select,.form-group textarea{padding:11px 15px;border:2px solid var(--border);border-radius:11px;font-size:15px;transition:border-color .2s;background:#fff;color:var(--dark);outline:none;font-family:var(--font)}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{border-color:var(--blue)}
.form-group textarea{resize:vertical;min-height:100px}
.form-msg{text-align:center;padding:16px;border-radius:11px;font-size:14px;font-weight:600;margin-top:12px;display:none}
.form-msg.success{background:#dcfce7;color:var(--green);display:block}
.form-msg.error{background:#fee2e2;color:#dc2626;display:block}

/* Blog */
.blog-card{background:#fff;border-radius:18px;overflow:hidden;border:1px solid var(--border);transition:all .3s}
.blog-card:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.blog-img{height:170px;display:flex;align-items:center;justify-content:center;font-size:60px}
.blog-body{padding:22px}
.blog-cat{display:inline-block;font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:.5px;padding:3px 10px;border-radius:50px;margin-bottom:10px}
.bc-jee{background:#dbeafe;color:var(--blue)}
.bc-neet{background:#dcfce7;color:var(--green)}
.bc-strategy{background:#fef9c3;color:#854d0e}
.bc-local{background:#ffe4e6;color:#9f1239}
.blog-card h3{font-size:16px;font-weight:700;margin-bottom:7px;line-height:1.35}
.blog-card p{font-size:13px;color:var(--gray);line-height:1.65;margin-bottom:14px}
.blog-meta{display:flex;justify-content:space-between;align-items:center}
.blog-date{font-size:12px;color:var(--gray)}
.blog-read{font-size:12px;font-weight:600;color:var(--blue)}

/* CTA section */
.cta-section{background:linear-gradient(135deg,var(--blue),var(--blue-d));color:#fff;padding:80px 0;text-align:center}
.cta-section h2{font-size:clamp(28px,4vw,46px);font-weight:800;color:#fff;margin-bottom:14px}
.cta-section p{font-size:18px;opacity:.8;margin-bottom:32px;max-width:480px;margin-left:auto;margin-right:auto}
.cta-btns{display:flex;gap:14px;justify-content:center;flex-wrap:wrap}

/* Scroll reveal */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .6s,transform .6s}
.reveal.visible{opacity:1;transform:translateY(0)}
.delay-1{transition-delay:.1s}.delay-2{transition-delay:.2s}.delay-3{transition-delay:.3s}

/* WhatsApp button */
#wa-btn{position:fixed;bottom:26px;right:26px;z-index:900;width:56px;height:56px;border-radius:50%;background:#25d366;display:flex;align-items:center;justify-content:center;box-shadow:0 4px 20px rgba(37,211,102,.4);transition:all .3s;animation:waPulse 2.5s ease-in-out infinite}
#wa-btn:hover{transform:scale(1.1);box-shadow:0 8px 28px rgba(37,211,102,.5)}
@keyframes waPulse{0%,100%{box-shadow:0 4px 20px rgba(37,211,102,.4)}50%{box-shadow:0 4px 28px rgba(37,211,102,.65),0 0 0 8px rgba(37,211,102,.1)}}

/* Footer */
.site-footer{background:var(--dark);color:rgba(255,255,255,.65)}
.footer-top{padding:64px 0 48px;border-bottom:1px solid rgba(255,255,255,.08)}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:48px}
.footer-logo{display:flex;align-items:center;gap:12px;margin-bottom:16px;color:#fff}
.footer-logo-icon{width:42px;height:42px;border-radius:11px;background:linear-gradient(135deg,var(--blue),var(--blue-d));display:flex;align-items:center;justify-content:center;font-size:20px;color:#fff;font-weight:900;flex-shrink:0}
.footer-logo strong{display:block;font-size:17px;font-weight:800;color:#fff}
.footer-logo span{font-size:10px;color:rgba(255,255,255,.5)}
.footer-brand p{font-size:13px;line-height:1.7;margin-bottom:18px}
.footer-contact-quick{display:flex;flex-direction:column;gap:10px;margin-bottom:18px}
.fq-item{display:flex;align-items:center;gap:8px;font-size:13px;transition:color .2s}
.fq-item:hover{color:#fff}
.fq-icon{font-size:14px}
.footer-social{display:flex;gap:8px}
.social-btn{width:38px;height:38px;border-radius:9px;background:rgba(255,255,255,.07);display:flex;align-items:center;justify-content:center;font-size:16px;transition:all .2s;cursor:pointer}
.social-btn:hover{background:var(--blue);transform:translateY(-2px)}
.footer-col h3{font-size:13px;font-weight:700;color:#fff;margin-bottom:14px;text-transform:uppercase;letter-spacing:.6px}
.footer-col ul{list-style:none;display:flex;flex-direction:column;gap:9px}
.footer-col ul li a{font-size:13px;transition:color .2s;display:block}
.footer-col ul li a:hover{color:var(--blue-l)}
.footer-bottom{padding:20px 0}
.footer-bottom-inner{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px}
.footer-bottom-inner p{font-size:12px}
.footer-badges{display:flex;gap:8px;flex-wrap:wrap}
.footer-badges span{background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.08);border-radius:6px;padding:3px 10px;font-size:11px;font-weight:600}

/* ===== RESPONSIVE ===== */
@media(max-width:1100px){
  .hero-inner{grid-template-columns:1fr 380px;gap:28px}
  .why-grid,.course-detail-inner,.contact-grid{grid-template-columns:1fr}
  .hero-inner{grid-template-columns:1fr;gap:24px}
  .hero-visual{display:none}
  .stats-grid,.footer-grid{grid-template-columns:repeat(2,1fr)}
  .grid-4{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:768px){
  .nav-links,.nav-admit-btn{display:none}
  .hamburger{display:flex}
  section{padding:56px 0}
  .grid-2,.grid-3,.courses-grid{grid-template-columns:1fr}
  .steps-grid{grid-template-columns:1fr 1fr}
  .schedule-grid,.topics-grid{grid-template-columns:1fr 1fr}
  .form-grid{grid-template-columns:1fr}
  .page-hero h1{font-size:28px}
  .hero h1{font-size:34px}
  .footer-grid{grid-template-columns:1fr}
  .yt-inner{flex-direction:column}
  .yt-preview{width:100%;max-width:440px}
  .reviews-summary{flex-direction:column}
  .stats-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:480px){
  .steps-grid,.schedule-grid,.topics-grid,.grid-4{grid-template-columns:1fr}
  .hero-btns{flex-direction:column}
  .btn-lg{padding:14px 24px;font-size:15px}
}