/* ===== Tokens ===== */
:root{
  --red:#E10B0B; --red-deep:#A80606; --ink:#0A1F3D; --ink-2:#12305c;
  --sky:#DFF3FC; --sky-2:#7FCBEF; --sun:#FFC62B; --paper:#F7FBFE; --white:#fff;
  --text:#14233b; --muted:#54657e; --wa:#1FAF52;
  --display:"Bricolage Grotesque","Hind Siliguri",system-ui,sans-serif;
  --body:"Hind Siliguri",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --r:14px; --wrap:1160px;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:84px}
body{margin:0;font-family:var(--body);font-size:1.0625rem;line-height:1.65;color:var(--text);background:var(--paper);-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:inherit}
h1,h2,h3{font-family:var(--display);line-height:1.1;margin:0;color:var(--ink)}
h2{font-size:clamp(1.9rem,4.2vw,3rem);font-weight:800;letter-spacing:-.02em}
h3{font-size:1.25rem;font-weight:700}
p{margin:0 0 1em}
.wrap{width:min(var(--wrap),100% - 40px);margin-inline:auto}
.bn{font-family:"Hind Siliguri",sans-serif;line-height:1.85}
.skip{position:absolute;left:-999px;top:8px;background:var(--ink);color:#fff;padding:8px 14px;border-radius:8px;z-index:100}
.skip:focus{left:8px}
:focus-visible{outline:3px solid var(--sun);outline-offset:3px}

/* ===== Buttons ===== */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;padding:.8rem 1.4rem;border-radius:999px;font-weight:700;font-size:1rem;text-decoration:none;border:2px solid transparent;cursor:pointer;font-family:var(--body);transition:transform .2s,box-shadow .2s,background .2s,color .2s}
.btn:hover{transform:translateY(-2px)}
.btn:active{transform:translateY(0)}
.btn-red{background:var(--red);color:#fff;box-shadow:0 8px 20px -8px rgba(225,11,11,.7)}
.btn-red:hover{background:var(--red-deep)}
.btn-ghost{border-color:var(--ink);color:var(--ink);background:transparent}
.btn-ghost:hover{background:var(--ink);color:#fff}
.btn-wa{background:var(--wa);color:#fff;box-shadow:0 8px 20px -8px rgba(31,175,82,.7)}
.btn-wa:hover{background:#178a40}
.btn-white{background:#fff;color:var(--red-deep)}
.btn-white:hover{background:var(--sun);color:var(--ink)}

/* ===== Header ===== */
.site-header{position:fixed;inset:0 0 auto 0;z-index:50;background:rgba(255,255,255,.0);transition:background .3s,box-shadow .3s,padding .3s;padding:14px 0}
.site-header.scrolled{background:rgba(255,255,255,.94);backdrop-filter:blur(10px);box-shadow:0 6px 24px -14px rgba(10,31,61,.35);padding:8px 0}
.bar{display:flex;align-items:center;justify-content:space-between;gap:16px}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none}
.brand img{width:48px;height:48px;border-radius:12px;box-shadow:0 4px 12px -4px rgba(225,11,11,.6)}
.brand-name{font-family:var(--display);font-weight:800;font-size:1.3rem;letter-spacing:.01em;color:var(--ink)}
.nav{display:flex;align-items:center;gap:26px}
.nav a:not(.btn){text-decoration:none;font-weight:600;color:var(--ink);position:relative;padding:4px 0}
.nav a:not(.btn)::after{content:"";position:absolute;left:0;bottom:-2px;height:3px;width:100%;background:var(--red);transform:scaleX(0);transform-origin:left;transition:transform .25s}
.nav a:not(.btn):hover::after{transform:scaleX(1)}
.nav-call{padding:.6rem 1.1rem}
.nav-toggle{display:none;width:46px;height:46px;border-radius:12px;border:0;background:var(--ink);cursor:pointer;padding:0;position:relative}
.nav-toggle span{position:absolute;left:12px;right:12px;height:2.5px;background:#fff;border-radius:2px;transition:transform .3s,opacity .2s}
.nav-toggle span:nth-child(1){top:15px}.nav-toggle span:nth-child(2){top:22px}.nav-toggle span:nth-child(3){top:29px}
.nav-toggle[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.nav-toggle[aria-expanded="true"] span:nth-child(2){opacity:0}
.nav-toggle[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ===== Hero ===== */
.hero{position:relative;padding:140px 0 90px;background:linear-gradient(180deg,var(--sky) 0%,#EFF9FE 100%);overflow:hidden}
.traces{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}
.traces{opacity:.55}
.traces path{stroke:var(--sky-2);stroke-dasharray:1;stroke-dashoffset:1;animation:draw 2.6s cubic-bezier(.6,.1,.2,1) forwards;animation-delay:calc(var(--i) * .22s + .2s)}
.traces .nodes circle{fill:var(--red);opacity:0;transform-box:fill-box;transform-origin:center;animation:node .5s ease forwards,pulse 2.8s ease-in-out infinite;animation-delay:calc(var(--i) * .22s + 2.2s),calc(var(--i) * .22s + 2.8s)}
@keyframes draw{to{stroke-dashoffset:0}}
@keyframes node{from{opacity:0;transform:scale(0)}to{opacity:1;transform:scale(1)}}
@keyframes pulse{0%,100%{transform:scale(1)}50%{transform:scale(1.5)}}

.hero-grid{position:relative;display:grid;grid-template-columns:1.25fr .85fr;gap:56px;align-items:center}
.ribbon{display:inline-block;margin:0 0 26px;filter:drop-shadow(0 8px 14px rgba(168,6,6,.35))}
.ribbon span{display:block;background:var(--red);color:#fff;font-family:var(--display);font-weight:800;font-size:clamp(1.05rem,2.3vw,1.55rem);letter-spacing:.005em;line-height:1.2;padding:14px 38px;clip-path:polygon(0 0,100% 0,calc(100% - 16px) 50%,100% 100%,0 100%,16px 50%);text-shadow:0 1px 0 rgba(0,0,0,.2)}
.ribbon-sm{margin-bottom:14px}
.ribbon-sm span{font-size:1.05rem;padding:10px 30px}
.hero h1{font-size:clamp(2.5rem,6vw,4.6rem);font-weight:800;letter-spacing:-.03em;max-width:13ch}
.lead{font-size:1.2rem;color:var(--muted);max-width:52ch;margin:22px 0 28px}
.cta-row{display:flex;flex-wrap:wrap;gap:12px}
.facts{list-style:none;margin:40px 0 0;padding:0;display:grid;grid-template-columns:repeat(3,1fr);gap:18px;max-width:640px}
.facts li{border-left:4px solid var(--red);padding-left:12px;font-size:.92rem;color:var(--muted);line-height:1.4}
.facts strong{display:block;color:var(--ink);font-size:1rem;margin-bottom:2px}

.hero-fig{margin:0;position:relative;justify-self:center;width:min(100%,400px)}
.arch{border-radius:200px 200px 24px 24px;overflow:hidden;border:6px solid #fff;box-shadow:0 30px 60px -24px rgba(10,31,61,.5);aspect-ratio:3/4;background:var(--ink-2);animation:rise 1.1s cubic-bezier(.2,.8,.2,1) both}
.arch img{width:100%;height:100%;object-fit:cover}
@keyframes rise{from{opacity:0;transform:translateY(30px)}to{opacity:1;transform:none}}
.tag{position:absolute;left:-22px;bottom:34px;background:var(--ink);color:#fff;font-weight:600;font-size:.95rem;padding:10px 18px;border-radius:12px;display:flex;align-items:center;gap:10px;box-shadow:0 14px 30px -12px rgba(10,31,61,.7);animation:rise 1s .5s cubic-bezier(.2,.8,.2,1) both}
.tag .dot{width:10px;height:10px;border-radius:50%;background:var(--sun);animation:blink 1.6s infinite}
@keyframes blink{50%{opacity:.25}}

/* Checker echoes the centre's red-and-white floor */
.checker{height:22px;background:conic-gradient(var(--red) 25%,#fff 0 50%,var(--red) 0 75%,#fff 0) 0 0/44px 44px}

/* ===== Marquee ===== */
.marquee{background:var(--ink);color:#fff;overflow:hidden;padding:16px 0}
.marquee-track{display:flex;width:max-content;animation:scroll 40s linear infinite}
.marquee:hover .marquee-track{animation-play-state:paused}
.marquee ul{display:flex;list-style:none;margin:0;padding:0}
.marquee li{font-family:var(--display);font-weight:700;font-size:1.05rem;padding:0 26px;position:relative;white-space:nowrap}
.marquee li::after{content:"";position:absolute;right:-5px;top:50%;width:10px;height:10px;margin-top:-5px;background:var(--sun);transform:rotate(45deg)}
@keyframes scroll{to{transform:translateX(-50%)}}

/* ===== Sections ===== */
.section{padding:96px 0}
.sec-head{margin-bottom:44px}
.sub{color:var(--muted);font-size:1.15rem;margin:12px 0 0}
.sub.bn{font-size:1.5rem;color:var(--sky-2);font-weight:600}

.intro-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start}
.intro p{font-size:1.15rem;color:var(--muted)}

/* ===== Curriculum ===== */
.curriculum{background:var(--ink);color:#fff;position:relative}
.curriculum h2{color:#fff}
.curriculum .sub{color:var(--sky-2)}
.tabs{display:grid;grid-template-columns:340px 1fr;gap:28px}
.tablist{display:flex;flex-direction:column;gap:10px}
.tablist button{display:flex;align-items:center;gap:16px;text-align:left;padding:18px 20px;border-radius:var(--r);border:2px solid rgba(255,255,255,.14);background:transparent;color:#fff;font-size:1.15rem;font-weight:600;cursor:pointer;transition:background .25s,border-color .25s,transform .25s}
.tablist button:hover{border-color:var(--sky-2);transform:translateX(4px)}
.tablist button[aria-selected="true"]{background:var(--sun);color:var(--ink);border-color:var(--sun);transform:translateX(8px)}
.tablist .n{flex:none;width:36px;height:36px;border-radius:50%;display:grid;place-items:center;font-family:var(--display);font-weight:800;background:rgba(255,255,255,.14)}
.tablist button[aria-selected="true"] .n{background:var(--ink);color:var(--sun)}
.panels{background:var(--ink-2);border-radius:20px;padding:36px 40px;min-height:100%;border:1px solid rgba(127,203,239,.25)}
.panel{animation:swap .45s cubic-bezier(.2,.8,.2,1)}
.panel[hidden]{display:none}
@keyframes swap{from{opacity:0;transform:translateX(18px)}to{opacity:1;transform:none}}
.panel h3{color:#fff;font-size:1.7rem;margin-bottom:18px}
.panel h3 small{display:block;font-family:var(--display);font-size:.95rem;font-weight:500;color:var(--sky-2);margin-top:4px}
.panel ul{margin:0;padding:0;list-style:none}
.panel li{position:relative;padding-left:30px;margin-bottom:14px;font-size:1.12rem}
.panel li::before{content:"";position:absolute;left:0;top:.8em;width:14px;height:4px;background:var(--red);border-radius:2px}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin:26px 0 0}
.chips span{font-family:var(--display);font-size:.88rem;font-weight:500;padding:5px 12px;border-radius:999px;background:rgba(127,203,239,.15);color:var(--sky-2)}
.note{margin-top:36px;padding:28px 32px;border-radius:18px;background:var(--red);color:#fff;display:grid;grid-template-columns:auto 1fr;gap:10px 32px;align-items:center}
.note h3{color:#fff;font-size:1.5rem}
.note p{margin:0;font-size:1.1rem}

/* ===== Gallery ===== */
.filters{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:28px}
.chip{border:2px solid var(--ink);background:transparent;color:var(--ink);padding:.5rem 1.1rem;border-radius:999px;font-weight:600;font-family:var(--body);font-size:.98rem;cursor:pointer;transition:background .2s,color .2s}
.chip:hover{background:rgba(10,31,61,.08)}
.chip.is-on{background:var(--ink);color:#fff}
.grid{display:grid;grid-template-columns:repeat(3,1fr);grid-auto-rows:230px;grid-auto-flow:dense;gap:14px}
.shot{position:relative;padding:0;border:0;border-radius:var(--r);overflow:hidden;cursor:zoom-in;background:var(--ink-2);animation:pop .45s ease both}
.shot.wide{grid-column:span 2}
.shot[hidden]{display:none}
.shot img{width:100%;height:100%;object-fit:cover;transition:transform .6s cubic-bezier(.2,.8,.2,1)}
.shot:hover img{transform:scale(1.06)}
.shot span{position:absolute;left:0;right:0;bottom:0;padding:26px 16px 12px;text-align:left;color:#fff;font-weight:600;background:linear-gradient(transparent,rgba(10,31,61,.85));transform:translateY(100%);transition:transform .3s}
.shot:hover span,.shot:focus-visible span{transform:none}
@keyframes pop{from{opacity:0;transform:scale(.96)}to{opacity:1;transform:none}}

/* ===== Certificate ===== */
.certificate{background:var(--red);color:#fff;position:relative;overflow:hidden}
.certificate::before{content:"";position:absolute;inset:0;background:conic-gradient(rgba(255,255,255,.06) 25%,transparent 0 50%,rgba(255,255,255,.06) 0 75%,transparent 0) 0 0/90px 90px;pointer-events:none}
.cert-grid{position:relative;display:grid;grid-template-columns:.9fr 1.1fr;gap:56px;align-items:center}
.certificate h2{color:#fff}
.cert-copy p{font-size:1.15rem;margin:20px 0}
.cert-copy .btn{margin-top:10px}
.cert-fig{margin:0;border-radius:18px;overflow:hidden;border:6px solid #fff;box-shadow:0 30px 60px -20px rgba(0,0,0,.5);transform:rotate(1.5deg);transition:transform .5s}
.cert-fig:hover{transform:rotate(0)}
.cert-fig img{width:100%;height:auto}

/* ===== Admission ===== */
.adm-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:60px;align-items:center}
.steps{list-style:none;margin:0;padding:0;counter-reset:s;position:relative}
.steps::before{content:"";position:absolute;left:21px;top:10px;bottom:10px;width:4px;background:repeating-linear-gradient(var(--red) 0 10px,transparent 10px 20px)}
.steps li{position:relative;padding:0 0 30px 70px;counter-increment:s}
.steps li:last-child{padding-bottom:0}
.steps li::before{content:counter(s);position:absolute;left:0;top:0;width:46px;height:46px;border-radius:50%;background:var(--red);color:#fff;display:grid;place-items:center;font-family:var(--display);font-weight:800;font-size:1.2rem;box-shadow:0 0 0 6px var(--paper)}
.steps h3{margin:6px 0 4px}
.steps p{margin:0;color:var(--muted)}
.photo-stack{position:relative;min-height:480px}
.photo-stack img{position:absolute;width:82%;border-radius:var(--r);border:6px solid #fff;box-shadow:0 24px 50px -22px rgba(10,31,61,.5);transition:transform .5s}
.photo-stack .p1{top:0;left:0;transform:rotate(-3deg)}
.photo-stack .p2{bottom:0;right:0;transform:rotate(3deg)}
.photo-stack img:hover{transform:rotate(0) scale(1.03);z-index:2}

/* ===== Contact ===== */
.contact{background:var(--sky)}
.contact-grid{display:grid;grid-template-columns:.8fr 1.2fr;gap:28px;align-items:stretch}
.info{background:#fff;border-radius:20px;padding:32px;box-shadow:0 20px 40px -26px rgba(10,31,61,.4)}
.info address{font-style:normal;margin-bottom:22px;font-size:1.1rem}
.info strong{display:block;font-family:var(--display);color:var(--ink);margin-bottom:4px}
.plus{display:inline-block;margin-top:8px;font-size:.95rem;color:var(--muted)}
.phones{display:flex;flex-direction:column;gap:2px;margin-bottom:24px}
.phones a{font-family:var(--display);font-weight:800;font-size:1.5rem;text-decoration:none;color:var(--red);width:max-content;transition:color .2s}
.phones a:hover{color:var(--ink)}
.btn-row{display:flex;flex-wrap:wrap;gap:10px}
.map{position:relative;border-radius:20px;overflow:hidden;min-height:380px;border:6px solid #fff;box-shadow:0 20px 40px -26px rgba(10,31,61,.5)}
.map iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.map-hit{position:absolute;inset:0;display:flex;align-items:flex-end;justify-content:center;padding:18px;text-decoration:none;cursor:pointer}
.pill{background:var(--ink);color:#fff;font-weight:700;padding:.7rem 1.3rem;border-radius:999px;box-shadow:0 10px 24px -8px rgba(0,0,0,.5);transition:background .2s,transform .2s}
.map-hit:hover .pill{background:var(--red);transform:translateY(-3px)}
.enquiry{margin-top:28px;background:#fff;border-radius:20px;padding:32px;box-shadow:0 20px 40px -26px rgba(10,31,61,.4)}
.enquiry h3{margin-bottom:18px;font-size:1.4rem}
.fields{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin-bottom:18px}
.fields .full{grid-column:1/-1}
label{display:flex;flex-direction:column;gap:6px;font-weight:600;font-size:.95rem;color:var(--ink)}
input,select,textarea{font:inherit;padding:.75rem .9rem;border:2px solid #cfdceb;border-radius:10px;background:#fff;color:var(--text);transition:border-color .2s,box-shadow .2s}
input:focus,select:focus,textarea:focus{outline:0;border-color:var(--red);box-shadow:0 0 0 4px rgba(225,11,11,.15)}
input.bad{border-color:var(--red)}
.err{color:var(--red-deep);font-weight:600;margin:0 0 14px}

/* ===== Footer ===== */
.site-footer{background:var(--ink);color:#cfe1f5;padding:44px 0 20px}
.foot{display:flex;flex-wrap:wrap;gap:30px;justify-content:space-between;align-items:center}
.foot-brand{display:flex;align-items:center;gap:20px}
.foot-brand img{border-radius:16px}
.foot-brand p:last-child{margin:0}
.foot-links{display:flex;flex-direction:column;gap:4px;text-align:right}
.foot-links a{text-decoration:none;font-weight:600}
.foot-links a:hover{color:var(--sun)}
.copy{text-align:center;margin:30px 0 0;font-size:.9rem;opacity:.7}

/* ===== Floating buttons ===== */
.float{position:fixed;right:18px;bottom:18px;display:flex;flex-direction:column;gap:12px;z-index:60}
.fab{width:56px;height:56px;border-radius:50%;display:grid;place-items:center;color:#fff;box-shadow:0 12px 26px -8px rgba(0,0,0,.5);transition:transform .2s;position:relative}
.fab:hover{transform:scale(1.1)}
.fab-wa{background:var(--wa)}
.fab-call{background:var(--red)}
.fab-wa::after{content:"";position:absolute;inset:0;border-radius:50%;border:2px solid var(--wa);animation:ring 2.4s ease-out infinite}
@keyframes ring{from{transform:scale(1);opacity:.8}to{transform:scale(1.7);opacity:0}}

/* ===== Lightbox ===== */
.lightbox{border:0;padding:0;background:transparent;max-width:100vw;max-height:100vh;width:100%;height:100%}
.lightbox::backdrop{background:rgba(5,14,30,.92)}
.lightbox[open]{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:10px;padding:20px}
.lightbox figure{margin:0;text-align:center;min-width:0}
.lightbox img{max-height:80vh;max-width:100%;margin:0 auto;border-radius:12px}
.lightbox figcaption{color:#fff;margin-top:12px}
.lb-close{position:absolute;top:14px;right:18px;font-size:2.4rem;line-height:1;background:none;border:0;color:#fff;cursor:pointer}
.lb-nav{width:48px;height:48px;border-radius:50%;border:0;background:rgba(255,255,255,.15);color:#fff;font-size:2rem;cursor:pointer}
.lb-nav:hover{background:var(--red)}

/* ===== Reveal ===== */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s ease,transform .7s cubic-bezier(.2,.8,.2,1)}
.reveal.in{opacity:1;transform:none}

/* ===== Responsive ===== */
@media (max-width:980px){
  .hero-grid,.intro-grid,.tabs,.cert-grid,.adm-grid,.contact-grid{grid-template-columns:1fr}
  .hero{padding-top:120px}
  .hero-fig{order:-1;width:min(100%,300px)}
  .tablist{flex-direction:row;overflow-x:auto;padding-bottom:6px;scroll-snap-type:x mandatory}
  .tablist button{flex:none;scroll-snap-align:start;font-size:1rem;padding:14px 16px}
  .tablist button[aria-selected="true"],.tablist button:hover{transform:none}
  .panels{padding:26px 22px}
  .note{grid-template-columns:1fr}
  .fields{grid-template-columns:1fr}
  .photo-stack{min-height:420px;max-width:440px}
  .nav-toggle{display:block}
  .nav{position:fixed;inset:70px 14px auto 14px;flex-direction:column;align-items:stretch;gap:0;background:#fff;border-radius:18px;padding:12px;box-shadow:0 24px 50px -16px rgba(10,31,61,.5);opacity:0;visibility:hidden;transform:translateY(-10px);transition:opacity .25s,transform .25s,visibility .25s}
  .nav.open{opacity:1;visibility:visible;transform:none}
  .nav a:not(.btn){padding:14px 10px;border-bottom:1px solid #e5edf6}
  .nav a:not(.btn)::after{display:none}
  .nav-call{margin-top:10px}
  .facts{grid-template-columns:1fr}
  .foot-links{text-align:left}
}
@media (max-width:640px){
  .section{padding:68px 0}
  .grid{grid-template-columns:repeat(2,1fr);grid-auto-rows:150px}
  .shot span{transform:none;font-size:.85rem;padding:20px 10px 8px}
  .tag{left:8px}
  .ribbon span{padding:12px 30px}
  .lightbox[open]{grid-template-columns:1fr;padding:10px}
  .lb-nav{position:absolute;bottom:20px}
  .lb-prev{left:20px}.lb-next{right:20px}
}
@media (prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
  .reveal{opacity:1;transform:none}
  .traces path{stroke-dashoffset:0}
  .traces .nodes circle{opacity:1}
  html{scroll-behavior:auto}
}