/* ============================================================
   KsTU-SRC — Shared stylesheet
   Tokens: navy institutional palette + muted gold accent
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,400;9..144,500;9..144,600;9..144,700;9..144,900&family=Public+Sans:wght@400;500;600;700&display=swap');

:root{
  --navy-900:#071b33;
  --navy-800:#0f2a4a;
  --navy-700:#17406e;
  --navy-600:#215389;
  --gold-500:#c79a3d;
  --gold-400:#d6ae57;
  --gold-300:#e4c77e;
  --paper:#f6f4ef;
  --paper-dim:#eeebe2;
  --ink:#191919;
  --ink-soft:#52504a;
  --white:#ffffff;
  --line:#ddd6c6;
  --line-dark:#2a4468;
  --radius-s:4px;
  --radius-m:10px;
  --shadow-card:0 1px 2px rgba(7,27,51,0.06), 0 8px 24px -12px rgba(7,27,51,0.18);
  --maxw:1180px;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  background:var(--paper);
  color:var(--ink);
  font-family:'Public Sans',system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
ul{margin:0;padding:0;list-style:none}
h1,h2,h3,h4{
  font-family:'Fraunces',Georgia,serif;
  font-weight:600;
  line-height:1.12;
  margin:0 0 0.5em;
  color:var(--navy-900);
  letter-spacing:-0.01em;
}
p{margin:0 0 1em;max-width:62ch;color:var(--ink-soft)}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 28px}

@media (prefers-reduced-motion: reduce){
  *{animation-duration:0.001ms !important;animation-iteration-count:1 !important;transition-duration:0.001ms !important;scroll-behavior:auto !important}
}

:focus-visible{outline:3px solid var(--gold-500);outline-offset:2px}

/* ---------- Skip link ---------- */
.skip-link{
  position:absolute;left:-9999px;top:0;background:var(--navy-900);color:var(--white);
  padding:12px 18px;z-index:200;border-radius:0 0 var(--radius-s) 0;
}
.skip-link:focus{left:0}

/* ---------- Top bar ---------- */
.topbar{
  background:var(--navy-900);color:#c9d6e8;font-size:13.5px;
}
.topbar .wrap{
  display:flex;justify-content:space-between;align-items:center;
  padding-top:8px;padding-bottom:8px;flex-wrap:wrap;gap:6px;
}
.topbar a{color:#c9d6e8;border-bottom:1px solid transparent}
.topbar a:hover{border-color:#c9d6e8}
.topbar-links{display:flex;gap:18px;flex-wrap:wrap}

/* ---------- Header / nav ---------- */
header.site-header{
  background:var(--white);
  border-bottom:1px solid var(--line);
  position:sticky;top:0;z-index:100;
}
.nav-row{display:flex;align-items:center;justify-content:space-between;padding:14px 28px;gap:24px}
.brand{display:flex;align-items:center;gap:12px}
.brand-mark{width:44px;height:44px;flex:none}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-text .full{font-family:'Fraunces',serif;font-weight:700;font-size:17px;color:var(--navy-900)}
.brand-text .sub{font-size:12px;color:var(--ink-soft)}

nav.main-nav{display:flex;align-items:center;gap:4px}
nav.main-nav a{
  padding:10px 14px;font-weight:600;font-size:14.5px;color:var(--navy-800);
  border-bottom:2px solid transparent;
}
nav.main-nav a:hover{color:var(--navy-900)}
nav.main-nav a.active{border-color:var(--gold-500);color:var(--navy-900)}

.menu-toggle{
  display:none;background:none;border:1px solid var(--line);border-radius:var(--radius-s);
  width:42px;height:42px;cursor:pointer;
}
.menu-toggle span{display:block;width:20px;height:2px;background:var(--navy-900);margin:5px auto;transition:transform .2s ease, opacity .2s ease}

@media (max-width:900px){
  nav.main-nav{
    position:absolute;top:100%;left:0;right:0;background:var(--white);
    flex-direction:column;align-items:stretch;border-bottom:1px solid var(--line);
    box-shadow:0 12px 20px -12px rgba(7,27,51,0.2);
    max-height:0;overflow:hidden;transition:max-height .25s ease;
  }
  nav.main-nav.open{max-height:400px}
  nav.main-nav a{padding:14px 28px;border-bottom:1px solid var(--paper-dim)}
  nav.main-nav a.active{border-left:3px solid var(--gold-500);border-bottom:1px solid var(--paper-dim)}
  .menu-toggle{display:block}
  .topbar-links{gap:12px}
}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:13px 24px;border-radius:var(--radius-s);font-weight:600;font-size:15px;
  border:1px solid transparent;cursor:pointer;font-family:'Public Sans',sans-serif;
}
.btn-primary{background:var(--gold-500);color:var(--navy-900)}
.btn-primary:hover{background:var(--gold-400)}
.btn-outline{border-color:var(--navy-800);color:var(--navy-800);background:transparent}
.btn-outline:hover{background:var(--navy-900);color:var(--white);border-color:var(--navy-900)}
.btn-outline-light{border-color:rgba(255,255,255,0.5);color:var(--white)}
.btn-outline-light:hover{background:rgba(255,255,255,0.12)}
.btn:disabled{opacity:0.55;cursor:not-allowed}

/* ---------- Hero (shared shell, content differs per page) ---------- */
.hero{background:var(--navy-900);color:var(--white);position:relative;overflow:hidden}
.hero .wrap{position:relative;z-index:2}
.hero-emblem{position:absolute;right:-80px;top:50%;transform:translateY(-50%);opacity:0.12;width:520px}

/* ---------- Page header (non-home pages) ---------- */
.page-head{background:var(--navy-900);color:var(--white);padding:56px 0 44px}
.page-head .kicker{color:var(--gold-300);font-weight:600;font-size:14.5px;margin-bottom:10px}
.page-head h1{color:var(--white);font-size:clamp(30px,4vw,44px);max-width:22ch}
.page-head p{color:#cfd9e8;max-width:60ch}

/* ---------- Sections ---------- */
section{padding:64px 0}
section.tight{padding:40px 0}
section.on-paper-dim{background:var(--paper-dim)}
section.on-navy{background:var(--navy-900);color:var(--white)}
section.on-navy h2,section.on-navy h3{color:var(--white)}
section.on-navy p{color:#cfd9e8}
.section-head{max-width:680px;margin-bottom:36px}
.section-head h2{font-size:clamp(24px,3vw,32px)}

/* ---------- Cards ---------- */
.card{
  background:var(--white);border:1px solid var(--line);border-radius:var(--radius-m);
  padding:26px;box-shadow:var(--shadow-card);
}
.grid{display:grid;gap:22px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
@media (max-width:900px){.grid-3{grid-template-columns:1fr 1fr}}
@media (max-width:640px){.grid-3,.grid-2{grid-template-columns:1fr}}

/* ---------- Stat row ---------- */
.stat-row{display:flex;gap:0;flex-wrap:wrap;border-top:1px solid var(--line-dark);border-bottom:1px solid var(--line-dark)}
.stat{flex:1 1 160px;padding:22px 0;border-right:1px solid var(--line-dark)}
.stat:last-child{border-right:none}
.stat .num{font-family:'Fraunces',serif;font-size:clamp(28px,3.4vw,40px);font-weight:700;color:var(--gold-300)}
.stat .label{font-size:13.5px;color:#c9d6e8}

/* ---------- Officer card ---------- */
.officer{display:flex;flex-direction:column;gap:12px}
.officer-photo{
  width:100%;aspect-ratio:4/5;border-radius:var(--radius-m);
  background:linear-gradient(155deg,var(--navy-700),var(--navy-900));
  display:flex;align-items:center;justify-content:center;color:var(--gold-300);
  font-family:'Fraunces',serif;font-size:40px;font-weight:700;
}
.officer h3{font-size:18px;margin-bottom:2px}
.officer .role{color:var(--gold-500);font-weight:600;font-size:13.5px;margin-bottom:8px}
.officer p{font-size:14.5px}

/* ---------- Timeline / numbered steps (legit sequence) ---------- */
.steps{counter-reset:step;display:grid;gap:0}
.step{display:flex;gap:20px;padding:22px 0;border-top:1px solid var(--line)}
.step:last-child{border-bottom:1px solid var(--line)}
.step::before{
  counter-increment:step;content:counter(step);
  font-family:'Fraunces',serif;font-size:22px;font-weight:700;color:var(--gold-500);
  flex:none;width:40px;
}

/* ---------- News card ---------- */
.news-card{display:flex;flex-direction:column;height:100%}
.news-thumb{aspect-ratio:16/10;border-radius:var(--radius-m) var(--radius-m) 0 0;overflow:hidden}
.news-body{border:1px solid var(--line);border-top:none;border-radius:0 0 var(--radius-m) var(--radius-m);padding:20px;flex:1;display:flex;flex-direction:column}
.news-date{font-size:13px;color:var(--gold-500);font-weight:600;margin-bottom:6px}
.news-body h3{font-size:18px;margin-bottom:8px}
.news-body p{font-size:14.5px;flex:1}
.news-tag{
  display:inline-block;font-size:12px;font-weight:600;color:var(--navy-800);
  background:var(--paper-dim);padding:4px 10px;border-radius:20px;margin-bottom:10px;width:fit-content;
}

/* ---------- Hostel room cards ---------- */
.room-card{display:flex;flex-direction:column;gap:14px}
.room-visual{aspect-ratio:16/9;border-radius:var(--radius-m);position:relative;overflow:hidden}
.room-head{display:flex;justify-content:space-between;align-items:baseline;gap:10px}
.room-head h3{font-size:19px;margin-bottom:0}
.room-price{font-family:'Fraunces',serif;font-weight:700;color:var(--navy-800);font-size:18px;white-space:nowrap}
.room-meta{display:flex;gap:14px;flex-wrap:wrap;font-size:13.5px;color:var(--ink-soft)}
.room-meta span{display:flex;align-items:center;gap:6px}
.availability{
  display:inline-flex;align-items:center;gap:6px;font-size:13px;font-weight:600;
  padding:5px 10px;border-radius:20px;width:fit-content;
}
.availability.open{background:#e5f1e6;color:#2c6e31}
.availability.limited{background:#faf1de;color:#9a6b12}
.availability.full{background:#f6e6e4;color:#a3392f}
.availability .dot{width:7px;height:7px;border-radius:50%;background:currentColor}

/* ---------- Forms ---------- */
.form-panel{background:var(--white);border:1px solid var(--line);border-radius:var(--radius-m);padding:32px;box-shadow:var(--shadow-card)}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.field{display:flex;flex-direction:column;gap:6px;margin-bottom:18px}
.field.full{grid-column:1 / -1}
.field label{font-size:13.5px;font-weight:600;color:var(--navy-900)}
.field .hint{font-size:12.5px;color:var(--ink-soft);font-weight:400}
input,select,textarea{
  font-family:'Public Sans',sans-serif;font-size:15px;padding:11px 13px;
  border:1px solid var(--line);border-radius:var(--radius-s);background:var(--white);color:var(--ink);
}
input:focus,select:focus,textarea:focus{border-color:var(--navy-700)}
textarea{resize:vertical;min-height:100px}
fieldset{border:1px solid var(--line);border-radius:var(--radius-m);padding:16px 18px;margin:0 0 18px}
fieldset legend{padding:0 8px;font-weight:600;font-size:13.5px;color:var(--navy-900)}
.radio-row{display:flex;gap:20px;flex-wrap:wrap}
.radio-row label{display:flex;align-items:center;gap:8px;font-size:14.5px;font-weight:500;color:var(--ink)}
.radio-row input{width:auto}
@media (max-width:640px){.form-grid{grid-template-columns:1fr}}

.form-note{
  border-left:3px solid var(--gold-500);background:var(--paper-dim);
  padding:12px 16px;font-size:13.5px;color:var(--ink-soft);border-radius:0 var(--radius-s) var(--radius-s) 0;margin-bottom:22px;
}

.confirmation{
  display:none;background:var(--navy-900);color:var(--white);border-radius:var(--radius-m);
  padding:30px;
}
.confirmation.show{display:block;animation:rise .35s ease}
.confirmation h3{color:var(--gold-300)}
.confirmation p{color:#cfd9e8}
.confirmation .ref{
  font-family:'Fraunces',serif;font-size:22px;font-weight:700;color:var(--white);
  border:1px dashed rgba(255,255,255,0.4);padding:10px 16px;border-radius:var(--radius-s);
  display:inline-block;margin:8px 0 16px;
}
@keyframes rise{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}

.error-text{color:#a3392f;font-size:13px;margin-top:4px;display:none}
.field.invalid input,.field.invalid select,.field.invalid textarea{border-color:#a3392f}
.field.invalid .error-text{display:block}

/* ---------- Contact ---------- */
.contact-grid{display:grid;grid-template-columns:1.1fr 1fr;gap:40px}
@media (max-width:900px){.contact-grid{grid-template-columns:1fr}}
.contact-item{display:flex;gap:16px;padding:18px 0;border-top:1px solid var(--line)}
.contact-item:last-child{border-bottom:1px solid var(--line)}
.contact-item .icon{flex:none;width:38px;height:38px;color:var(--navy-800)}
.contact-item h4{margin:0 0 4px;font-size:15.5px;font-family:'Public Sans',sans-serif;font-weight:700;color:var(--navy-900)}
.contact-item p{margin:0;font-size:14.5px}
.map-frame{border-radius:var(--radius-m);overflow:hidden;border:1px solid var(--line);aspect-ratio:4/3}

/* ---------- Footer ---------- */
footer.site-footer{background:var(--navy-900);color:#c9d6e8}
.footer-top{padding:56px 0 36px;display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px}
@media (max-width:900px){.footer-top{grid-template-columns:1fr 1fr}}
@media (max-width:560px){.footer-top{grid-template-columns:1fr}}
.footer-brand{display:flex;gap:12px;align-items:flex-start;margin-bottom:14px}
.footer-brand .brand-mark{width:38px;height:38px}
.footer-brand .name{font-family:'Fraunces',serif;color:var(--white);font-weight:700;font-size:16px}
footer.site-footer h5{color:var(--white);font-size:13.5px;font-weight:700;margin:0 0 14px;letter-spacing:.02em}
footer.site-footer ul li{margin-bottom:10px;font-size:14px}
footer.site-footer a:hover{color:var(--white)}
.social-row{display:flex;gap:10px;margin-top:16px}
.social-row a{
  width:36px;height:36px;border:1px solid rgba(255,255,255,0.25);border-radius:50%;
  display:flex;align-items:center;justify-content:center;
}
.social-row a:hover{background:rgba(255,255,255,0.1)}
.footer-bottom{border-top:1px solid rgba(255,255,255,0.15);padding:20px 0;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;font-size:13px;color:#9fb0c8}

/* ---------- Utility ---------- */
.center{text-align:center;margin-left:auto;margin-right:auto}
.mt-0{margin-top:0}
.gold-rule{width:56px;height:3px;background:var(--gold-500);border:none;margin:0 0 18px}