/* SchoolApp — core: tokens, base, nav, footer, splash, reveals */

:root{
  --brand:#384fbe; --brand-hover:#2c3f9d; --brand-light:#c3cbea; --brand-muted:#e9ecf8;
  --ink:#141c42; --ink-2:#1b2450; --nav:#141c42;
  --text:#5a6080; --muted:#8a90ab;
  --success:#2fa96b; --success-bg:#dff3e8;
  --info:#2D6BFF; --info-bg:#E6EEFF;
  --warning:#F5A623; --danger:#a41616; --danger-bg:#f7e4e4; --teal:#9933ff;
  --white:#fff; --surface:#f4f6fd; --line:#e4e8f5;
  --r-sm:10px; --r-md:18px; --r-lg:28px; --r-pill:40px;
  --shadow-sm:0 1px 3px rgba(20,28,66,.06),0 1px 2px rgba(20,28,66,.04);
  --shadow-md:0 26px 60px rgba(20,28,66,.13);
  --shadow-lg:0 44px 90px rgba(20,28,66,.2);
  --shadow-brand:0 26px 60px rgba(20,28,66,.16);
  --ease:cubic-bezier(.19,1,.22,1); --ease-soft:cubic-bezier(.4,0,.2,1);
  --maxw:1180px;
}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;overflow-x:hidden}
body{font-family:"Outfit","Gilroy","Poppins",system-ui,-apple-system,"Segoe UI",sans-serif;color:var(--text);background:var(--white);font-weight:300;line-height:1.55;overflow-x:hidden;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font-family:inherit}
button{cursor:pointer;border:none;background:none}
img{max-width:100%;display:block}
ul{list-style:none}
svg{display:block;flex-shrink:0}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}
h1,h2{color:var(--ink);letter-spacing:-.024em;line-height:1.1;font-weight:300}
h3{color:var(--ink);letter-spacing:-.015em;line-height:1.22;font-weight:500}
.eyebrow{display:inline-block;font-size:12px;font-weight:400;letter-spacing:.12em;text-transform:uppercase;color:var(--brand);background:var(--brand-muted);padding:6px 14px;border-radius:var(--r-pill);margin-bottom:20px}

/* ── Buttons ── */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;font-weight:400;font-size:15px;padding:13px 24px;border-radius:var(--r-pill);transition:transform .45s var(--ease),box-shadow .45s var(--ease),background .45s var(--ease);white-space:nowrap}
.btn-primary{background:var(--brand);color:#fff;box-shadow:var(--shadow-brand)}
.btn-primary:hover{background:var(--brand-hover);transform:translateY(-2px);box-shadow:0 18px 46px rgba(56,79,190,.42)}
.btn-ghost{background:#fff;color:var(--ink);box-shadow:var(--shadow-sm);border:1px solid var(--line)}
.btn-ghost:hover{transform:translateY(-2px);box-shadow:var(--shadow-md)}
.btn-light{background:#fff;color:var(--brand)}
.btn-light:hover{transform:translateY(-2px);box-shadow:var(--shadow-md)}
.btn .play{width:30px;height:30px;border-radius:50%;background:var(--brand);display:inline-flex;align-items:center;justify-content:center;color:#fff}
.btn-ghost .play{box-shadow:var(--shadow-brand)}

/* ── Nav ── */
.nav{position:sticky;top:0;z-index:200;background:rgba(255,255,255,.82);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid transparent;transition:border-color .45s var(--ease),box-shadow .45s var(--ease)}
.nav.scrolled{border-color:var(--line);box-shadow:var(--shadow-sm)}
.nav-inner{max-width:var(--maxw);margin:0 auto;padding:14px 24px;display:flex;align-items:center;gap:28px}
.brand{display:inline-flex;align-items:center;gap:11px;line-height:1}
.brand-mark{width:40px;height:40px;border-radius:11px;background:var(--brand);display:flex;align-items:center;justify-content:center;flex-shrink:0}
.brand-name{font-size:19px;font-weight:500;color:var(--nav);letter-spacing:-.02em;line-height:1;display:block}
.nav-links{display:flex;gap:30px;margin-left:14px}
.nav-links a{font-size:15px;font-weight:400;color:var(--nav);opacity:.78;transition:opacity .15s,color .15s}
.nav-links a:hover{opacity:1;color:var(--brand)}
.nav-cta{margin-left:auto;display:flex;align-items:center;gap:16px}
.nav-login{font-weight:400;font-size:15px;color:var(--nav)}
.nav-login:hover{color:var(--brand)}
.nav-toggle{display:none;width:42px;height:42px;border-radius:11px;border:1px solid var(--line);align-items:center;justify-content:center;margin-left:auto}

/* ── Footer ── */
.footer{background:#fff;border-top:1px solid var(--line);padding:64px 0 30px}
.foot-grid{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:40px}
.foot-brand p{font-size:14px;color:var(--muted);margin:14px 0 18px;max-width:280px}
.foot-news{display:flex;background:var(--surface);border:1px solid var(--line);border-radius:var(--r-pill);padding:5px 5px 5px 18px;max-width:320px}
.foot-news input{flex:1;border:none;background:none;outline:none;font-size:14px;color:var(--ink)}
.foot-news button{width:42px;height:42px;border-radius:50%;background:var(--brand);color:#fff;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.foot-col h5{font-size:14px;font-weight:500;color:var(--ink);margin-bottom:16px}
.foot-col a{display:block;font-size:14px;color:var(--muted);margin-bottom:11px;transition:color .15s}
.foot-col a:hover{color:var(--brand)}
.foot-bottom{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;margin-top:48px;padding-top:24px;border-top:1px solid var(--line);font-size:13px;color:var(--muted)}
.foot-bottom a{font-weight:600}

/* ── Reveal ── */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}


/* ── Splash (reference: ring + hairline bar) ── */
.splash{position:fixed;inset:0;z-index:900;background:var(--brand);color:#fff;display:grid;place-items:center;text-align:center}
.splash__in{display:flex;flex-direction:column;align-items:center;gap:24px}
.splash__ring{position:relative;width:clamp(140px,17vw,210px);aspect-ratio:1;display:grid;place-items:center;border-radius:50%;border:1px solid rgba(255,255,255,.18)}
.splash__ring::before{content:"";position:absolute;inset:-1px;border-radius:50%;border:1px solid transparent;border-top-color:#fff;animation:spin 1.6s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.splash__mark{width:clamp(70px,8vw,110px);height:auto}
.splash__name{font-size:clamp(1.5rem,2.2vw,2rem);font-weight:300;line-height:1.2}
.splash__name b{font-weight:500}
.splash__tag{font-size:clamp(.8rem,.88vw,.92rem);color:rgba(255,255,255,.8);margin-top:2px}
.splash__bar{width:min(220px,50vw);height:1px;background:rgba(255,255,255,.2);overflow:hidden}
.splash__bar i{display:block;height:100%;width:0;background:#fff}
.splash.is-out{transition:opacity .7s var(--ease-soft),transform 1s var(--ease);opacity:0;transform:translateY(-2%);pointer-events:none}
html.is-locked{overflow:hidden}

/* ── Reveals (reference: masked lines + staggered fade) ── */
.mask{display:block;overflow:hidden;padding-bottom:.14em;margin-bottom:-.14em}
.mask>span{display:block;transform:translateY(108%);transition:transform 1s var(--ease)}
.is-in .mask>span,.mask.is-in>span{transform:translateY(0)}
.mask:nth-child(2)>span{transition-delay:.08s}
.reveal,.fade{opacity:0;transform:translateY(18px);transition:opacity .8s var(--ease-soft),transform .9s var(--ease)}
.reveal.is-in,.fade.is-in,.reveal.in{opacity:1;transform:none}
.fade[data-d="1"]{transition-delay:.09s}
.fade[data-d="2"]{transition-delay:.18s}
.fade[data-d="3"]{transition-delay:.27s}
.fade[data-d="4"]{transition-delay:.36s}

/* ── Section base ── */
.section{padding:84px 0}
.section-head{max-width:680px}
.section-head h2{font-size:clamp(28px,3.6vw,42px);margin:0 0 14px}
.section-head p{font-size:17px;color:var(--text)}
.center{margin-left:auto;margin-right:auto;text-align:center}


/* ── Responsive ── */
@media(max-width:980px){  .nav-inner{padding:14px 18px}
  .nav-links,.nav-cta .nav-login{display:none}
  .nav-cta{margin-left:auto;gap:10px}
  .nav-cta .btn-primary{padding:10px 16px;font-size:14px}
  .nav-toggle{display:flex;margin-left:0}
  .foot-grid{grid-template-columns:1fr 1fr}
  .nav-mobile{display:none;background:#fff;border-bottom:1px solid var(--line);padding:14px 24px}
  .nav-mobile.open{display:block}
}
@media(max-width:560px){  .section{padding:64px 0}
  .foot-grid{grid-template-columns:1fr}
}
@media(prefers-reduced-motion:reduce){  html{scroll-behavior:auto}
  .mask>span{transform:none}
  .reveal,.fade{opacity:1;transform:none}
}

/* ── Utilities ── */
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.skip{position:absolute;left:-9999px;top:0;z-index:1000;background:var(--brand);color:#fff;padding:12px 20px;border-radius:0 0 10px 0}
.skip:focus{left:0}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:4px}
.foot-news input:focus-visible{outline-offset:0}
html{scroll-padding-top:96px}
.news-ok{font-size:13px;color:var(--success);margin-top:10px}
.foot-legal{display:flex;gap:22px;flex-wrap:wrap}

/* mobile menu is hidden unless the breakpoint opens it */
.nav-mobile{display:none}
.nav-mobile a{display:block;padding:11px 0;font-weight:400;color:var(--nav)}