/* ============================================================
   SHN Institute — Victory of Maths
   Palette + type tokens
   ============================================================ */
:root{
  --navy:#17325f;
  --navy-2:#1c3f7d;
  --footer-bg:#142a55;
  --footer-bg-dark:#0e1f42;
  --accent:#2f6bff;
  --accent-strong:#1e56e6;
  --accent-light:#dbe7ff;
  --accent-25:rgba(47,107,255,.25);
  --tint:#eef3ff;
  --tint-2:#f6f9ff;
  --ink:#16233f;
  --muted:#5b6b88;
  --muted-on-dark:#c3d1ee;
  --line:#e4ebf7;
  --white:#fff;
  --radius:16px;
  --radius-sm:12px;
  --shadow:0 18px 46px -22px rgba(23,50,95,.35);
  --shadow-sm:0 8px 24px -14px rgba(23,50,95,.4);
  --font-display:'Plus Jakarta Sans',system-ui,sans-serif;
  --font-body:'Inter',system-ui,sans-serif;
  --font-script:'Caveat',cursive;
  --maxw:1160px;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--font-body);
  color:var(--ink);
  background:var(--white);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3{font-family:var(--font-display);line-height:1.15;margin:0;color:var(--navy);font-weight:800}
p{margin:0}
a{color:inherit;text-decoration:none}
img,svg{display:block;max-width:100%}
ul{margin:0;padding:0;list-style:none}

.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}
.center{text-align:center}
.eyebrow{
  font-family:var(--font-display);font-weight:700;
  color:var(--accent);text-transform:uppercase;
  letter-spacing:.14em;font-size:.74rem;margin-bottom:10px;
}
.eyebrow.center{text-align:center}
.section-title{font-size:clamp(1.6rem,3.4vw,2.15rem);text-align:center}
.section-lead{text-align:center;color:var(--muted);margin-top:8px}

.skip-link{
  position:absolute;left:-999px;top:0;z-index:100;
  background:var(--navy);color:#fff;padding:10px 16px;border-radius:0 0 8px 0;
}
.skip-link:focus{left:0}

/* ============================================================
   Buttons
   ============================================================ */
.btn{
  display:inline-flex;align-items:center;gap:9px;
  font-family:var(--font-display);font-weight:700;font-size:.95rem;
  padding:13px 24px;border-radius:12px;cursor:pointer;border:1.6px solid transparent;
  transition:transform .18s ease,background .2s ease,color .2s ease,box-shadow .2s ease;
}
.btn:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
.btn .ico{width:18px;height:18px;fill:currentColor}
.btn-primary{background:var(--accent);color:#fff;box-shadow:0 12px 26px -14px var(--accent)}
.btn-primary:hover{background:var(--accent-strong);transform:translateY(-2px)}
.btn-ghost{background:#fff;color:var(--navy);border-color:var(--line)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px)}
.btn-white{background:#fff;color:var(--navy)}
.btn-white:hover{transform:translateY(-2px);box-shadow:0 12px 26px -16px rgba(0,0,0,.5)}
.btn-outline-white{background:transparent;color:#fff;border-color:rgba(255,255,255,.55)}
.btn-outline-white:hover{background:rgba(255,255,255,.12);transform:translateY(-2px)}

/* ============================================================
   Header
   ============================================================ */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(255,255,255,.9);backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.header-inner{display:flex;align-items:center;gap:24px;min-height:74px}
.brand{display:flex;align-items:center;gap:11px}
.brand-mark{width:52px;height:52px;object-fit:contain}
.brand-text{display:flex;flex-direction:column;line-height:1.05}
.brand-text strong{font-family:var(--font-display);font-size:1.1rem;letter-spacing:.02em;color:var(--navy);font-weight:800}
.brand-text em{font-style:normal;font-size:.62rem;letter-spacing:.22em;text-transform:uppercase;color:var(--muted);border-top:1px solid var(--line);padding-top:3px;margin-top:2px}
.nav{display:flex;gap:28px;margin-left:auto}
.nav a{font-family:var(--font-display);font-weight:600;font-size:.95rem;color:var(--navy);padding:6px 0;position:relative}
.nav a::after{content:"";position:absolute;left:0;right:100%;bottom:-2px;height:2px;background:var(--accent);transition:right .25s ease}
.nav a:hover::after,.nav a.active::after{right:0}
.nav-cta{padding:11px 20px}
.nav-toggle{display:none;flex-direction:column;gap:5px;background:none;border:0;cursor:pointer;padding:8px}
.nav-toggle span{width:24px;height:2.5px;background:var(--navy);border-radius:2px;transition:.25s}

/* ============================================================
   Hero
   ============================================================ */
.hero{
  position:relative;
  background:
    radial-gradient(1100px 460px at 78% -8%,rgba(47,107,255,.10),transparent 60%),
    linear-gradient(180deg,var(--tint) 0%,#fff 78%);
  padding:64px 0 0;
  overflow:visible;
}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;gap:40px;align-items:center}
.hero h1{font-size:clamp(2.3rem,5.2vw,3.5rem);letter-spacing:-.01em}
.hero-sub{color:var(--muted);margin-top:16px;font-size:1.05rem}
.hero-name{font-family:var(--font-script);color:var(--accent);font-size:2rem;font-weight:700;margin-top:22px;line-height:1}
.hero-role{color:var(--muted);font-size:.9rem;margin-top:2px}
.hero-badges{margin-top:20px;display:flex;flex-direction:column;gap:10px}
.hero-badges li{display:flex;align-items:center;gap:10px;font-weight:500;color:var(--ink);font-size:.96rem}
.hero-badges .ico{width:34px;height:34px;padding:8px;border-radius:50%;background:var(--white);fill:var(--accent);box-shadow:var(--shadow-sm);flex:none}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap;margin-top:28px}
.hero-art img{width:100%;height:auto;filter:drop-shadow(0 30px 40px rgba(23,50,95,.12))}

/* Quick facts */
.facts{
  display:grid;grid-template-columns:repeat(4,1fr);gap:8px;
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);padding:22px;margin:52px 0 -44px;
  position:relative;z-index:2;
}
.facts li{display:flex;align-items:center;gap:13px;padding:6px 16px;position:relative}
.facts li:not(:last-child)::after{content:"";position:absolute;right:0;top:14%;bottom:14%;width:1px;background:var(--line)}
.fact-ic{flex:none;width:44px;height:44px;border-radius:50%;background:var(--accent);display:grid;place-items:center}
.fact-ic svg{width:22px;height:22px;fill:#fff}
.fact-body{display:flex;flex-direction:column;line-height:1.25}
.fact-body strong{font-family:var(--font-display);font-size:.82rem;color:var(--navy);font-weight:700}
.fact-body b{font-size:.95rem;font-weight:700;color:var(--ink)}
.fact-body b a{color:var(--accent)}
.fact-body small{color:var(--muted);font-size:.72rem}

/* ============================================================
   About
   ============================================================ */
.about{padding:110px 0 78px}
.about-grid{display:grid;grid-template-columns:1fr .85fr;gap:56px;align-items:center}
.about h2{font-size:clamp(1.7rem,3.5vw,2.3rem);margin-bottom:20px}
.checklist{display:flex;flex-direction:column;gap:12px;margin-bottom:20px}
.checklist li{display:flex;align-items:center;gap:12px;font-weight:600;color:var(--ink)}
.checklist li::before{
  content:"";flex:none;width:24px;height:24px;border-radius:50%;
  background:var(--accent) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='white'%3E%3Cpath d='M9 16.2 4.8 12l-1.4 1.4L9 19 21 7l-1.4-1.4z'/%3E%3C/svg%3E") center/15px no-repeat;
}
.about-text{color:var(--muted);max-width:44ch}
.about-photo{display:grid;place-items:center}
.about-photo img{
  width:min(380px,100%);aspect-ratio:1;border-radius:50%;object-fit:cover;
  border:8px solid #fff;box-shadow:0 30px 60px -26px rgba(23,50,95,.5);
  background:var(--tint);
}
/* Big logo used in place of an instructor photo */
.about-logo{display:grid;place-items:center}
.about-logo img{
  width:min(400px,100%);height:auto;
  padding:22px;border-radius:24px;background:#fff;
  border:1px solid var(--line);
  box-shadow:0 30px 60px -30px rgba(23,50,95,.4);
}

/* ============================================================
   Classes
   ============================================================ */
.classes{padding:70px 0;background:var(--tint-2);border-top:1px solid var(--line);border-bottom:1px solid var(--line)}
.class-cards{display:grid;grid-template-columns:1fr 1fr;gap:22px;margin:34px 0 30px}
.class-card{
  background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:28px;box-shadow:var(--shadow-sm);transition:transform .2s,box-shadow .2s;
}
.class-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.class-ic{width:58px;height:58px;border-radius:14px;background:var(--tint);display:grid;place-items:center;margin-bottom:16px}
.class-ic svg{width:28px;height:28px;fill:var(--accent)}
.class-card h3{font-size:1.2rem;color:var(--accent)}
.class-loc{font-weight:700;color:var(--navy);margin:2px 0 10px}
.class-card p:last-child{color:var(--muted)}

/* ============================================================
   Why choose us
   ============================================================ */
.why{padding:76px 0}
.why-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:40px}
.why-item{text-align:center;padding:8px}
.why-ic{width:64px;height:64px;margin:0 auto 16px;border-radius:18px;background:var(--tint);display:grid;place-items:center}
.why-ic svg{width:30px;height:30px;fill:var(--accent)}
.why-item h3{font-size:1.06rem;margin-bottom:8px}
.why-item p{color:var(--muted);font-size:.94rem}

/* ============================================================
   Stats
   ============================================================ */
.stats{padding:20px 0 60px}
.stats .container{
  background:
    radial-gradient(600px 300px at 12% 0%,rgba(47,107,255,.4),transparent 60%),
    linear-gradient(120deg,var(--navy) 0%,var(--navy-2) 100%);
  border-radius:22px;padding:44px 30px;box-shadow:var(--shadow);
}
.stats-title{color:#fff;text-align:center;font-size:clamp(1.3rem,2.8vw,1.7rem);margin-bottom:32px}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}
.stat-grid li{display:flex;flex-direction:column;align-items:center;text-align:center;gap:6px;position:relative;padding:4px 12px}
.stat-grid li:not(:last-child)::after{content:"";position:absolute;right:0;top:18%;bottom:18%;width:1px;background:rgba(255,255,255,.16)}
.stat-ic svg{width:32px;height:32px;fill:var(--accent-light)}
.stat-grid b{font-family:var(--font-display);font-size:clamp(1.6rem,3.6vw,2.1rem);color:#fff;font-weight:800;line-height:1}
.stat-grid small{color:var(--muted-on-dark);font-size:.86rem}

/* ============================================================
   Follow us
   ============================================================ */
.follow{padding:66px 0}
.social-cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:34px}
.social-card{
  display:flex;align-items:center;gap:16px;background:#fff;
  border:1px solid var(--line);border-radius:var(--radius);padding:20px 24px;
  box-shadow:var(--shadow-sm);transition:transform .2s,box-shadow .2s,border-color .2s;
}
.social-card:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--accent-25)}
.soc-ic{width:48px;height:48px;border-radius:12px;display:grid;place-items:center;flex:none}
.soc-ic svg{width:26px;height:26px;fill:#fff}
.soc-ic.yt{background:#ff0000}
.soc-ic.tt{background:#010101}
.soc-ic.ig{background:linear-gradient(45deg,#f9ce34,#ee2a7b 45%,#6228d7)}
.soc-body{display:flex;flex-direction:column}
.soc-body strong{font-family:var(--font-display);color:var(--navy)}
.soc-body small{color:var(--muted)}

/* ============================================================
   Testimonials
   ============================================================ */
.testi{padding:56px 0 76px;background:var(--tint-2);border-top:1px solid var(--line)}
.testi-track{display:grid;grid-template-columns:repeat(3,1fr);gap:22px;margin-top:36px}
.testi-card{
  position:relative;background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  padding:30px 26px 24px;margin:0;box-shadow:var(--shadow-sm);
}
.quote-mark{position:absolute;top:8px;left:20px;font-family:Georgia,serif;font-size:3.4rem;color:var(--accent-25);line-height:1}
.testi-card p{color:var(--ink);position:relative;z-index:1;margin-bottom:14px}
.stars{color:#f5a623;letter-spacing:2px;font-size:1.05rem}
.testi-card cite{display:block;margin-top:8px;font-style:normal;font-weight:700;color:var(--navy);font-size:.9rem}
.testi-dots{display:none;justify-content:center;gap:8px;margin-top:26px}
.testi-dots button{width:9px;height:9px;border-radius:50%;border:0;background:var(--line);cursor:pointer;transition:.2s}
.testi-dots button.active{background:var(--accent);width:22px;border-radius:6px}

/* ============================================================
   CTA band
   ============================================================ */
.cta-band{padding:26px 0 74px}
.cta-inner{
  display:flex;align-items:center;gap:26px;flex-wrap:wrap;
  background:
    radial-gradient(500px 260px at 90% 120%,rgba(47,107,255,.45),transparent 60%),
    linear-gradient(120deg,var(--navy) 0%,var(--navy-2) 100%);
  border-radius:22px;padding:34px 40px;box-shadow:var(--shadow);
}
.cta-ic{width:64px;height:64px;border-radius:50%;background:#fff;display:grid;place-items:center;flex:none}
.cta-ic svg{width:34px;height:34px;fill:var(--navy)}
.cta-text{flex:1;min-width:240px}
.cta-text h2{color:#fff;font-size:clamp(1.3rem,3vw,1.7rem)}
.cta-text p{color:var(--muted-on-dark);margin-top:6px}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}

/* ============================================================
   Footer
   ============================================================ */
.site-footer{background:var(--footer-bg);color:var(--muted-on-dark)}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1.3fr;gap:36px;padding:56px 0 40px}
.brand--footer .brand-text strong{color:#fff}
.brand--footer .brand-text em{color:var(--muted-on-dark);border-top-color:rgba(255,255,255,.18)}
.footer-brand p{margin:16px 0 18px;font-size:.9rem;max-width:34ch;color:var(--muted-on-dark)}
.footer-brand .brand-mark{background:#fff;border-radius:12px;padding:4px}
.footer-social{display:flex;gap:10px}
.footer-social a{width:38px;height:38px;border-radius:10px;background:rgba(255,255,255,.08);display:grid;place-items:center;transition:.2s}
.footer-social a:hover{background:var(--accent)}
.footer-social svg{width:19px;height:19px;fill:#fff}
.footer-col h3{color:#fff;font-size:1rem;margin-bottom:16px}
.footer-col ul{display:flex;flex-direction:column;gap:11px;font-size:.9rem}
.footer-col a:hover{color:#fff}
.footer-col li::marker{color:transparent}
.footer-contact li{display:flex;align-items:flex-start;gap:10px}
.footer-contact svg{width:17px;height:17px;fill:var(--accent-light);flex:none;margin-top:3px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.1)}
.footer-bottom-inner{display:flex;justify-content:space-between;padding:18px 0;font-size:.82rem;color:var(--muted-on-dark)}

/* ============================================================
   Plixoo credit bar
   ============================================================ */
.plixoo{background:var(--footer-bg-dark);border-top:1px solid var(--accent-25);padding:16px 0}
.plixoo .container{display:flex;align-items:center;justify-content:center;gap:18px;flex-wrap:wrap;text-align:center}
.plixoo p{font-size:.88rem;color:var(--muted-on-dark);line-height:1.4;margin:0}
.plixoo strong{color:var(--accent);font-weight:700}
.plixoo-btn{
  display:inline-flex;align-items:center;gap:9px;
  border:1.5px solid var(--accent);color:var(--accent-light);
  border-radius:12px;padding:9px 20px;font-family:var(--font-display);
  font-size:.86rem;font-weight:600;transition:background .2s,color .2s;
}
.plixoo-btn svg{flex:none}
.plixoo-btn:hover{background:var(--accent);color:#fff}

/* ============================================================
   Reveal-on-scroll
   ============================================================ */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width:960px){
  .hero-grid{grid-template-columns:1fr;gap:24px}
  .hero-art{order:-1;max-width:520px;margin:0 auto}
  .about-grid{grid-template-columns:1fr;gap:36px}
  .about-photo,.about-logo{order:-1}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .facts{grid-template-columns:1fr 1fr;gap:18px}
  .facts li:nth-child(2)::after{display:none}
}
@media (max-width:820px){
  .nav,.nav-cta{display:none}
  .nav-toggle{display:flex}
  .nav.open{
    display:flex;flex-direction:column;gap:0;margin:0;
    position:absolute;left:0;right:0;top:100%;
    background:#fff;border-bottom:1px solid var(--line);box-shadow:var(--shadow);
  }
  .nav.open a{padding:15px 24px;border-top:1px solid var(--line)}
  .nav.open a::after{display:none}
  .header-inner{position:relative}
  .why-grid{grid-template-columns:1fr 1fr;gap:28px}
  .stat-grid{grid-template-columns:1fr 1fr;gap:22px}
  .stat-grid li:nth-child(2)::after{display:none}
  .stat-grid li:nth-child(even){padding-bottom:22px}
}
@media (max-width:680px){
  .class-cards{grid-template-columns:1fr}
  .social-cards{grid-template-columns:1fr}
  .facts{grid-template-columns:1fr}
  .facts li::after{display:none!important}
  .facts li{border-bottom:1px solid var(--line);padding-bottom:14px}
  .facts li:last-child{border-bottom:0;padding-bottom:6px}
  /* Testimonials become a swipeable carousel */
  .testi-track{
    grid-template-columns:none;display:flex;overflow-x:auto;scroll-snap-type:x mandatory;
    gap:16px;scroll-behavior:smooth;-webkit-overflow-scrolling:touch;
    scrollbar-width:none;margin-left:-24px;margin-right:-24px;padding:6px 24px 4px;
  }
  .testi-track::-webkit-scrollbar{display:none}
  .testi-card{flex:0 0 84%;scroll-snap-align:center}
  .testi-dots{display:flex}
  .footer-bottom-inner{flex-direction:column;gap:6px;text-align:center}
}
@media (max-width:460px){
  .why-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .cta-inner{padding:26px 22px}
  .stats .container{padding:34px 20px}
}

@media (prefers-reduced-motion:reduce){
  *{scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none;transition:none}
  .btn:hover,.class-card:hover,.social-card:hover{transform:none}
}