/* =========================================================
   SASTRA EDUCATIONAL SERVICES — STYLE SHEET
   Palette drawn from brand mark:
   Sastra Blue #0F7FC0 · Ink #26282A · Amber #F2A400
   ========================================================= */

:root{
  --blue: #0f7fc0;
  --blue-dark: #0a5a8c;
  --blue-light: #56b0e6;
  --ink: #26282a;
  --ink-soft: #55585c;
  --navy: #0b2c40;
  --navy-soft: #123852;
  --amber: #f2a400;
  --amber-dark: #d38b00;
  --paper: #faf9f5;
  --paper-tint: #eaf5fc;
  --white: #ffffff;
  --line: rgba(15,127,192,0.18);
  --shadow: 0 20px 45px -25px rgba(11,44,64,0.45);

  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'IBM Plex Sans', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;

  --wrap: 1180px;
}

*, *::before, *::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior: auto; }
  *, *::before, *::after{ animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; scroll-behavior: auto !important; }
}

body{
  margin:0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  line-height: 1.6;
}

img{ max-width:100%; display:block; }
a{ color:inherit; text-decoration:none; }
ul{ margin:0; padding:0; list-style:none; }
svg{ fill:none; stroke:currentColor; stroke-width:2.4; stroke-linecap:round; stroke-linejoin:round; }

.wrap{
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 24px;
}

.skip-link{
  position:absolute; left:-999px; top:auto;
  background: var(--navy); color:#fff; padding:12px 18px; border-radius:0 0 8px 0; z-index:200;
}
.skip-link:focus{ left:0; top:0; }

:focus-visible{ outline: 3px solid var(--amber); outline-offset: 2px; }

.icon{ width:20px; height:20px; flex-shrink:0; }

/* ---------- Eyebrow / labels ---------- */
.eyebrow{
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.14em;
  color: var(--blue-dark);
  margin: 0 0 14px;
}
.eyebrow--center{ text-align:center; }
.eyebrow--onnavy{ color: var(--amber); }

/* ---------- Ticker ---------- */
.ticker{
  background: var(--navy);
  color: #fff;
  overflow: hidden;
  white-space: nowrap;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}
.ticker__track{
  display:inline-flex;
  align-items:center;
  gap: 22px;
  padding: 9px 0;
  animation: scroll-ticker 28s linear infinite;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.04em;
}
.ticker__item{ display:inline-flex; align-items:center; gap:6px; }
.ticker__dot{ color: var(--amber); font-size:10px; }

@keyframes scroll-ticker{
  from{ transform: translateX(0); }
  to{ transform: translateX(-50%); }
}
@media (prefers-reduced-motion: reduce){
  .ticker__track{ animation: none; }
  .ticker{ overflow-x: auto; }
}

/* ---------- Header ---------- */
.site-header{
  position: sticky; top:0; z-index: 100;
  background: rgba(250,249,245,0.92);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--line);
}
.header__inner{
  display:flex; align-items:center; gap: 28px;
  padding: 10px 24px;
}
.brand{ display:flex; align-items:center; flex-shrink:0; }
.brand__logo{ height: 46px; width:auto; }

.nav{ display:flex; gap: 26px; margin-left: 8px; flex:1; }
.nav a{
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: var(--ink-soft);
  padding: 6px 2px;
  position:relative;
}
.nav a::after{
  content:''; position:absolute; left:0; right:0; bottom:-2px; height:2px;
  background: var(--amber); transform: scaleX(0); transform-origin:left;
  transition: transform .25s ease;
}
.nav a:hover{ color: var(--ink); }
.nav a:hover::after{ transform: scaleX(1); }

.header__cta{ flex-shrink:0; }

.nav-toggle{
  display:none; flex-direction:column; justify-content:center; gap:5px;
  width:38px; height:38px; background:none; border:1px solid var(--line); border-radius:8px;
  cursor:pointer; margin-left:auto;
}
.nav-toggle span{ display:block; height:2px; width:18px; background: var(--ink); margin:0 auto; transition: transform .22s ease, opacity .22s ease; }
.nav-toggle.is-active span:nth-child(1){ transform: translateY(7px) rotate(45deg); }
.nav-toggle.is-active span:nth-child(2){ opacity:0; }
.nav-toggle.is-active span:nth-child(3){ transform: translateY(-7px) rotate(-45deg); }

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:9px;
  font-family: var(--font-mono);
  font-weight:600; font-size: 13.5px; letter-spacing:0.02em;
  padding: 13px 22px; border-radius: 8px;
  border: 1.5px solid transparent;
  cursor:pointer; white-space:nowrap;
  transition: transform .18s ease, box-shadow .18s ease, background-color .18s ease, color .18s ease;
}
.btn:hover{ transform: translateY(-2px); }
.btn .icon{ width:17px; height:17px; }

.btn--amber{ background: var(--amber); color: var(--navy); box-shadow: 0 12px 24px -12px rgba(242,164,0,0.6); }
.btn--amber:hover{ background: var(--amber-dark); }

.btn--ghost{ background: transparent; color: var(--ink); border-color: var(--line); }
.btn--ghost:hover{ border-color: var(--blue); color: var(--blue-dark); }

.btn--outline{ background: transparent; color: var(--navy); border-color: var(--navy); }
.btn--outline:hover{ background: var(--navy); color:#fff; }
.btn--outline.btn--onnavy{ color:#fff; border-color: rgba(255,255,255,0.5); }
.btn--outline.btn--onnavy:hover{ background:#fff; color: var(--navy); }

.btn--solid{ background: var(--blue); color:#fff; box-shadow: 0 14px 26px -14px rgba(15,127,192,0.65); }
.btn--solid:hover{ background: var(--blue-dark); }

.btn--block{ width:100%; margin-top: 6px; }

/* ---------- Bezel (signature instrument-frame) ---------- */
.bezel{
  position:relative;
  background: #fff;
  border-radius: 4px;
  border: 1px solid var(--line);
}
.bezel::before, .bezel::after,
.bezel > .corner-a, .bezel > .corner-b{ content:''; }
.bezel::before, .bezel::after{
  position:absolute; width:18px; height:18px;
  border: 2.5px solid var(--amber);
  pointer-events:none;
}
.bezel::before{ top:-1px; left:-1px; border-right:none; border-bottom:none; }
.bezel::after{ bottom:-1px; right:-1px; border-left:none; border-top:none; }

/* ---------- Hero ---------- */
.hero{
  position:relative;
  padding: 72px 0 90px;
  overflow:hidden;
  background:
    radial-gradient(ellipse at 85% 0%, var(--paper-tint) 0%, transparent 55%),
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: auto, 42px 42px, 42px 42px;
  background-position: 0 0, -1px -1px, -1px -1px;
}
.hero__helix{
  position:absolute; right: -20px; top:0; bottom:0; width: 200px; opacity:0.14;
  pointer-events:none;
}
.hero__helix svg{ width:100%; height:100%; }
.helix-strand{ stroke: var(--blue); stroke-width:6; fill:none; }
.helix-strand--b{ stroke: var(--navy); }

.hero__inner{
  display:grid; grid-template-columns: 1.1fr 0.9fr; gap: 56px; align-items:center;
  position:relative;
}

.hero__title{
  font-family: var(--font-display);
  font-size: clamp(2.3rem, 4vw, 3.4rem);
  line-height: 1.08;
  letter-spacing: -0.01em;
  margin: 0 0 20px;
  color: var(--ink);
}
.hero__sub{
  font-size: 17px; color: var(--ink-soft); max-width: 46ch; margin: 0 0 30px;
}
.hero__actions{ display:flex; gap:14px; flex-wrap:wrap; margin-bottom: 34px; }

.hero__stats{ display:flex; flex-wrap:wrap; gap: 12px 22px; }
.hero__stats li{
  display:flex; align-items:center; gap:8px;
  font-family: var(--font-mono); font-size:12.5px; font-weight:600;
  color: var(--navy); letter-spacing:0.02em;
}
.hero__stats .dot{ width:7px; height:7px; border-radius:50%; background: var(--blue); box-shadow: 0 0 0 3px var(--paper-tint); }

/* ---------- Hero visual: scope panel ---------- */
.hero__visual{ display:flex; justify-content:center; }
.scope{
  width: 100%; max-width: 400px;
  background: linear-gradient(160deg, var(--navy) 0%, #0e3450 100%);
  border-radius: 10px;
  padding: 18px 18px 14px;
  box-shadow: var(--shadow);
}
.scope::before, .scope::after{ border-color: var(--blue-light); }
.scope__head{
  display:flex; justify-content:space-between; align-items:center;
  font-family: var(--font-mono); font-size:11px; letter-spacing:0.08em; color: rgba(255,255,255,0.7);
  margin-bottom: 10px;
}
.scope__blink{ color: #6cd67a; display:flex; align-items:center; gap:5px; }
.scope__blink::before{ content:''; }
.scope__art{ width:100%; height:auto; }
.scope-flask{ stroke: var(--blue-light); }
.scope-line{ stroke: rgba(255,255,255,0.35); }
.bubble{ fill: var(--amber); stroke:none; opacity:0.9; animation: bubble-rise 3.2s ease-in-in infinite; }
.bubble--2{ animation-delay: .6s; }
.bubble--3{ animation-delay: 1.2s; }
@keyframes bubble-rise{
  0%{ transform: translateY(0); opacity:0; }
  15%{ opacity:0.9; }
  100%{ transform: translateY(-46px); opacity:0; }
}
.scope-circuit{ stroke: rgba(255,255,255,0.28); }
.scope-circuit circle{ fill: var(--blue-light); stroke:none; }
.scope-molecule{ stroke: var(--amber); }
.scope-molecule circle{ fill: var(--navy); stroke: var(--amber); }

.scope__foot{
  display:flex; justify-content:space-between; align-items:center;
  margin-top: 8px; padding-top:10px; border-top:1px dashed rgba(255,255,255,0.2);
  font-family: var(--font-mono); font-size:11.5px; letter-spacing:0.1em; color: rgba(255,255,255,0.7);
}
.scope__foot-strong{ color: var(--amber); font-weight:700; }

/* ---------- Sections ---------- */
.section{ padding: 92px 0; }
.section--tint{ background: var(--paper-tint); }
.section--navy{ background: var(--navy); color:#fff; }

.section__title{
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 3vw, 2.4rem);
  text-align:center; max-width: 720px; margin: 0 auto 16px;
  line-height:1.2;
}
.section__title--left{ text-align:left; margin: 0 0 16px; max-width: none; }
.section__title--onnavy{ color:#fff; }
.section__lead{
  text-align:center; max-width: 560px; margin: 0 auto 52px;
  color: var(--ink-soft); font-size:16px;
}
.section__lead--left{ text-align:left; margin: 0 0 30px; max-width: 52ch; }

.br-desktop{ display:inline; }

/* ---------- Feature grid ---------- */
.feature-grid{
  display:grid; grid-template-columns: repeat(3, 1fr); gap: 22px;
}
.feature-card{
  padding: 30px 26px 28px;
  transition: transform .25s ease, box-shadow .25s ease;
}
.feature-card:hover{ transform: translateY(-5px); box-shadow: var(--shadow); }
.feature-card--wide{ grid-column: span 3; display:flex; align-items:center; gap:24px; text-align:left; }
.feature-card--wide .feature-card__icon{ margin: 0; flex-shrink:0; }
.feature-card__icon{
  width:52px; height:52px; margin: 0 0 18px;
  display:flex; align-items:center; justify-content:center;
  background: var(--paper-tint); border-radius:10px; color: var(--blue-dark);
}
.feature-card__icon svg{ width:28px; height:28px; }
.feature-card h3{
  font-family: var(--font-display); font-size:19px; margin: 0 0 8px; color: var(--ink);
}
.feature-card p{ margin:0; color: var(--ink-soft); font-size:15px; }

/* ---------- Programs ---------- */
.programs{
  display:grid; grid-template-columns: 1.15fr 0.85fr; gap: 56px; align-items:start;
}
.checklist{ margin: 0 0 30px; display:flex; flex-direction:column; gap:14px; }
.checklist li{
  padding-left: 28px; position:relative; font-size:15.5px; color: var(--ink-soft);
}
.checklist li::before{
  content:''; position:absolute; left:0; top:6px; width:14px; height:14px;
  border: 2px solid var(--blue); border-radius:3px;
  background: linear-gradient(135deg, var(--blue) 0 50%, transparent 50%);
}
.checklist strong{ color: var(--ink); }

.notice-card{
  padding: 30px 28px; text-align:center;
  background: linear-gradient(165deg, var(--navy), var(--navy-soft));
  color:#fff;
}
.notice-card::before, .notice-card::after{ border-color: var(--amber); }
.notice-card__badge{
  display:inline-block; font-family: var(--font-mono); font-size:11px; letter-spacing:0.14em;
  color: var(--amber); border:1px solid rgba(242,164,0,0.5); border-radius: 999px; padding: 5px 12px; margin-bottom:18px;
}
.notice-card__mal{
  font-family: var(--font-body); font-weight:600; font-size: 21px; line-height:1.4; margin: 0 0 10px;
}
.notice-card__en{ color: rgba(255,255,255,0.75); margin: 0 0 22px; font-size:14.5px; }
.notice-card__row{
  display:flex; align-items:center; justify-content:center; gap:10px; margin-bottom:10px;
  font-family: var(--font-mono); font-size:13.5px; color: rgba(255,255,255,0.9);
}

/* ---------- Facilities strip ---------- */
.facility-strip{
  display:grid; grid-template-columns: repeat(4,1fr); gap:20px;
}
.facility{
  padding: 26px 18px; text-align:center; color: var(--blue-dark);
  display:flex; flex-direction:column; align-items:center; gap:14px;
}
.facility svg{ width:34px; height:34px; }
.facility span{
  font-family: var(--font-mono); font-size:12.5px; font-weight:600; letter-spacing:0.02em; color: var(--ink);
}

/* ---------- Contact / location ---------- */
.contact-grid{
  display:grid; grid-template-columns: 1fr 1fr; gap: 26px; margin-top: 20px;
}
.contact-card{ padding: 34px 32px; color: var(--ink); }
.contact-card h3{ font-family: var(--font-display); font-size:21px; margin:0 0 20px; }
.contact-row{ display:flex; gap:14px; margin-bottom:16px; color: var(--ink-soft); }
.contact-row .icon{ color: var(--blue); margin-top:2px; }
.contact-row p{ margin:0; font-size:15px; }
.email-link{ word-break: break-all; color: var(--blue-dark); }
.contact-actions{ display:flex; gap:14px; flex-wrap:wrap; margin-top:22px; }

.map-card{ overflow:hidden; padding:0; min-height: 320px; }
.map-card iframe{ width:100%; height:100%; min-height:320px; border:0; display:block; }

/* ---------- Footer ---------- */
.site-footer{ background: var(--ink); color: rgba(255,255,255,0.75); padding-top: 56px; }
.footer__inner{
  display:grid; grid-template-columns: 1.3fr 1fr 1fr; gap: 40px; padding-bottom: 40px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}
.footer__logo{ height: 40px; width:auto; margin-bottom: 12px; }
.footer__brand p{ font-family: var(--font-mono); font-size:13px; letter-spacing:0.04em; }
.footer__col h4{
  font-family: var(--font-mono); color:#fff; font-size:13px; letter-spacing:0.08em; margin: 0 0 16px;
}
.footer__col a, .footer__col p{ display:block; margin-bottom:10px; font-size:14.5px; }
.footer__col a:hover{ color: var(--amber); }
.footer__bottom{
  text-align:center; padding: 20px 0; font-size:13px; font-family: var(--font-mono); letter-spacing:0.02em;
}

/* ---------- Mobile Footer ---------- */
.footer__brand p,
.footer__col p,
.footer__col a{
    overflow-wrap: break-word;
    word-wrap: break-word;
    word-break: break-word;
}

.footer__col a{
    display: inline-block;
    max-width: 100%;
}

@media (max-width: 768px){

    .footer__inner{
        grid-template-columns: 1fr;
        gap: 32px;
        text-align: center;
    }

    .footer__brand{
        display:flex;
        flex-direction:column;
        align-items:center;
    }

    .footer__logo{
        margin-bottom:16px;
    }

    .footer__brand p{
        max-width: 340px;
        margin:0 auto;
        line-height:1.8;
    }

    .footer__col h4{
        margin-bottom:14px;
    }

    .footer__col p,
    .footer__col a{
        margin-bottom:8px;
        line-height:1.7;
    }

    .footer__bottom{
        padding:18px 16px;
        line-height:1.7;
    }
}

/* ---------- Scroll reveal ---------- */
.reveal{ opacity:0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
.reveal.is-visible{ opacity:1; transform:none; }
@media (prefers-reduced-motion: reduce){
  .reveal{ opacity:1; transform:none; }
}

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width: 980px){
  .hero__inner{ grid-template-columns: 1fr; }
  .hero__visual{ order:-1; margin-bottom: 10px; }
  .programs{ grid-template-columns: 1fr; }
  .feature-grid{ grid-template-columns: repeat(2,1fr); }
  .feature-card--wide{ grid-column: span 2; }
  .facility-strip{ grid-template-columns: repeat(2,1fr); }
  .contact-grid{ grid-template-columns: 1fr; }
  .br-desktop{ display:none; }
}

@media (max-width: 760px){
  .nav{
    position:fixed; inset: 66px 0 auto 0; margin:0;
    background: var(--paper); flex-direction:column; gap:0;
    padding: 10px 24px 18px; border-bottom: 1px solid var(--line);
    transform: translateY(-12px); opacity:0; pointer-events:none;
    transition: transform .22s ease, opacity .22s ease;
  }
  .nav.is-open{ transform:none; opacity:1; pointer-events:auto; }
  .nav a{ padding: 12px 0; border-bottom: 1px solid var(--line); font-size:14px; }
  .nav-toggle{ display:flex; }
  .header__cta{ display:none; }
  .header__inner{ position:relative; }

  .feature-grid{ grid-template-columns: 1fr; }
  .feature-card--wide{ grid-column: span 1; flex-direction:column; text-align:center; }
  .facility-strip{ grid-template-columns: 1fr 1fr; }
  .hero{ padding: 44px 0 60px; }
  .section{ padding: 64px 0; }
}

@media (max-width: 480px){
  .brand__logo{ height: 36px; }
  .hero__actions{ flex-direction:column; align-items:stretch; }
  .hero__actions .btn{ width:100%; }
  .facility-strip{ grid-template-columns: 1fr; }
  .contact-actions{ flex-direction:column; }
  .contact-actions .btn{ width:100%; }
}