/* ============================================================
   Central University of Science and Technology (CUST)
   Shared stylesheet — FICTIONAL institution.
   No real university branding, names, or assets are used.
   ============================================================ */

:root{
  --navy:#0b2545;
  --navy-2:#13315c;
  --navy-soft:#1b3a66;
  --green:#1f7a4d;
  --green-2:#16623d;
  --gold:#c9a227;
  --ink:#1c2330;
  --muted:#5b6675;
  --line:#e3e7ee;
  --bg:#f6f8fb;
  --card:#ffffff;
  --radius:10px;
  --shadow:0 2px 10px rgba(11,37,69,.07);
  --shadow-lg:0 14px 40px rgba(11,37,69,.14);
  --maxw:1180px;
  --font:"Georgia","Times New Roman",serif;
  --sans:"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:var(--sans);
  color:var(--ink);
  background:var(--bg);
  line-height:1.6;
  font-size:16px;
}
a{color:var(--navy-2);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%}
h1,h2,h3,h4{font-family:var(--font);color:var(--navy);line-height:1.25;margin:0 0 .5em}
.container{max-width:var(--maxw);margin:0 auto;padding:0 22px}
.btn{
  display:inline-block;padding:11px 22px;border-radius:6px;
  font-weight:600;font-size:.95rem;border:2px solid transparent;cursor:pointer;
  transition:.18s;
}
.btn-primary{background:var(--green);color:#fff}
.btn-primary:hover{background:var(--green-2);text-decoration:none}
.btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.6)}
.btn-ghost:hover{background:rgba(255,255,255,.12);text-decoration:none}
.btn-navy{background:var(--navy);color:#fff}
.btn-navy:hover{background:var(--navy-2);text-decoration:none}

/* ---------- Top utility bar ---------- */
.utility{background:var(--navy);color:#cdd8e8;font-size:.82rem}
.utility .container{display:flex;justify-content:space-between;align-items:center;height:38px}
.utility a{color:#cdd8e8;margin-left:18px}
.utility a:hover{color:#fff}
.utility .util-left a{margin-left:0;margin-right:18px}

/* ---------- Logo / brand ---------- */
.brand{display:flex;align-items:center;gap:13px}
.crest{width:46px;height:54px;flex:0 0 auto}
.brand-text strong{display:block;font-family:var(--font);font-size:1.18rem;color:#fff;line-height:1.1}
.brand-text span{display:block;font-size:.72rem;letter-spacing:.12em;text-transform:uppercase;color:var(--gold)}

/* ---------- Masthead / nav ---------- */
.masthead{background:linear-gradient(90deg,var(--navy),var(--navy-2));}
.masthead .container{display:flex;align-items:center;justify-content:space-between;height:84px}
.mainnav ul{list-style:none;display:flex;margin:0;padding:0;gap:4px}
.mainnav a{
  color:#e7edf6;font-weight:600;font-size:.93rem;padding:10px 14px;border-radius:6px;display:block;
}
.mainnav a:hover,.mainnav a.active{background:rgba(255,255,255,.12);text-decoration:none}
.nav-toggle{display:none;background:none;border:0;color:#fff;font-size:1.6rem;cursor:pointer}

/* ---------- Hero ---------- */
.hero{
  position:relative;color:#fff;
  background:
    linear-gradient(120deg,rgba(11,37,69,.92),rgba(31,122,77,.72)),
    repeating-linear-gradient(45deg,#10396b 0 22px,#0d3262 22px 44px);
  padding:84px 0;
}
.hero h1{color:#fff;font-size:2.7rem;max-width:760px}
.hero p{font-size:1.18rem;max-width:640px;color:#e6eef7}
.hero .hero-actions{margin-top:26px;display:flex;gap:14px;flex-wrap:wrap}
.hero .eyebrow{letter-spacing:.18em;text-transform:uppercase;font-size:.78rem;color:var(--gold);font-weight:700}

/* ---------- Quick links strip ---------- */
.quickstrip{background:var(--green);color:#fff}
.quickstrip .container{display:flex;flex-wrap:wrap}
.quickstrip a{
  flex:1 1 0;min-width:160px;color:#fff;padding:18px 16px;text-align:center;font-weight:600;
  border-right:1px solid rgba(255,255,255,.18);font-size:.95rem;
}
.quickstrip a:last-child{border-right:0}
.quickstrip a:hover{background:var(--green-2);text-decoration:none}

/* ---------- Sections ---------- */
.section{padding:62px 0}
.section.alt{background:#fff}
.section-head{max-width:720px;margin-bottom:34px}
.section-head .eyebrow{letter-spacing:.16em;text-transform:uppercase;font-size:.76rem;color:var(--green);font-weight:700}
.section-head h2{font-size:2rem;margin-top:6px}
.section-head p{color:var(--muted)}

/* ---------- Cards / grids ---------- */
.grid{display:grid;gap:24px}
.grid-3{grid-template-columns:repeat(3,1fr)}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-4{grid-template-columns:repeat(4,1fr)}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);overflow:hidden;display:flex;flex-direction:column;
  transition:.18s;
}
.card:hover{box-shadow:var(--shadow-lg);transform:translateY(-3px)}
.card .card-top{height:6px;background:linear-gradient(90deg,var(--navy),var(--green))}
.card .card-body{padding:22px}
.card h3{font-size:1.2rem}
.card p{color:var(--muted);font-size:.95rem}
.card .tag{display:inline-block;font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;
  color:var(--green);font-weight:700;margin-bottom:8px}

/* ---------- Stats ---------- */
.stats{background:var(--navy);color:#fff}
.stats .grid-4{gap:0}
.stats .stat{padding:38px 18px;text-align:center;border-right:1px solid rgba(255,255,255,.12)}
.stats .stat:last-child{border-right:0}
.stats .stat b{display:block;font-family:var(--font);font-size:2.6rem;color:var(--gold)}
.stats .stat span{color:#c6d2e2;font-size:.92rem}

/* ---------- News list ---------- */
.news-item{display:flex;gap:18px;padding:20px 0;border-bottom:1px solid var(--line)}
.news-item:last-child{border-bottom:0}
.news-date{flex:0 0 92px;text-align:center;background:var(--bg);border:1px solid var(--line);
  border-radius:8px;padding:10px 6px;height:fit-content}
.news-date b{display:block;font-family:var(--font);font-size:1.6rem;color:var(--navy);line-height:1}
.news-date span{font-size:.74rem;text-transform:uppercase;letter-spacing:.08em;color:var(--muted)}
.news-item h3{font-size:1.15rem;margin-bottom:4px}
.news-item .meta{font-size:.8rem;color:var(--green);text-transform:uppercase;letter-spacing:.06em;font-weight:700}
.news-item p{color:var(--muted);font-size:.95rem;margin:.3em 0 0}

/* ---------- Sidebar / two col ---------- */
.layout{display:grid;grid-template-columns:1fr 320px;gap:40px}
.sidebar .widget{background:#fff;border:1px solid var(--line);border-radius:var(--radius);
  box-shadow:var(--shadow);margin-bottom:22px;overflow:hidden}
.sidebar .widget h4{background:var(--navy);color:#fff;margin:0;padding:13px 18px;font-size:1rem}
.sidebar .widget .widget-body{padding:16px 18px}
.sidebar ul{list-style:none;margin:0;padding:0}
.sidebar li{padding:9px 0;border-bottom:1px dashed var(--line);font-size:.92rem}
.sidebar li:last-child{border-bottom:0}

/* ---------- Calendar widget ---------- */
.cal-item{display:flex;gap:12px;align-items:flex-start}
.cal-item .d{flex:0 0 44px;text-align:center;background:var(--green);color:#fff;border-radius:6px;padding:5px 0}
.cal-item .d b{display:block;font-size:1.2rem;line-height:1;font-family:var(--font)}
.cal-item .d span{font-size:.65rem;text-transform:uppercase}

/* ---------- Page banner ---------- */
.pagebanner{background:linear-gradient(120deg,var(--navy),var(--navy-2));color:#fff;padding:46px 0}
.pagebanner h1{color:#fff;font-size:2.3rem;margin:0}
.breadcrumb{font-size:.82rem;color:#b9c6da;margin-bottom:8px}
.breadcrumb a{color:#b9c6da}
.breadcrumb a:hover{color:#fff}

/* ---------- Prose ---------- */
.prose{max-width:780px}
.prose p{margin:0 0 1.1em}
.prose h2{font-size:1.6rem;margin-top:1.4em}
.prose h3{font-size:1.25rem;margin-top:1.2em}
.prose ul{padding-left:20px}
.prose li{margin:.3em 0}
.lead{font-size:1.2rem;color:var(--navy-2);font-family:var(--font)}

/* ---------- Contact ---------- */
.field{margin-bottom:16px}
.field label{display:block;font-weight:600;font-size:.9rem;margin-bottom:5px}
.field input,.field textarea,.field select{
  width:100%;padding:11px 13px;border:1px solid #c7d0dd;border-radius:6px;font-size:.95rem;font-family:inherit;
}
.field input:focus,.field textarea:focus{outline:2px solid var(--green);border-color:var(--green)}
.infobox{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow)}
.infobox h3{margin-top:0}
.infobox .row{display:flex;gap:10px;padding:8px 0;border-bottom:1px dashed var(--line)}
.infobox .row:last-child{border-bottom:0}
.infobox .row b{flex:0 0 96px;color:var(--navy)}

/* ---------- Footer ---------- */
.site-footer{background:var(--navy);color:#c4d0e2;padding:54px 0 0;font-size:.9rem}
.site-footer .fgrid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:34px}
.site-footer h5{color:#fff;font-family:var(--font);font-size:1.05rem;margin:0 0 14px}
.site-footer ul{list-style:none;margin:0;padding:0}
.site-footer li{margin:7px 0}
.site-footer a{color:#c4d0e2}
.site-footer a:hover{color:#fff}
.site-footer .fbrand p{color:#9fb0c8;margin-top:14px;max-width:300px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.13);margin-top:42px;padding:18px 0;
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;color:#8ea2bd;font-size:.82rem}
.footer-bottom a{color:#8ea2bd}

/* ---------- Auth pages (sso/lms/portal) ---------- */
.auth-body{
  min-height:100vh;display:flex;flex-direction:column;
  background:
    linear-gradient(135deg,rgba(11,37,69,.96),rgba(19,49,92,.96)),
    repeating-linear-gradient(45deg,#10396b 0 26px,#0d3262 26px 52px);
  color:#fff;font-family:var(--sans);
}
.auth-top{padding:20px 0}
.auth-main{flex:1;display:flex;align-items:center;justify-content:center;padding:30px 20px}
.auth-card{
  background:#fff;color:var(--ink);width:100%;max-width:430px;border-radius:14px;
  box-shadow:0 24px 60px rgba(0,0,0,.35);overflow:hidden;
}
.auth-card .auth-head{background:linear-gradient(90deg,var(--navy),var(--navy-2));
  color:#fff;padding:26px 30px;text-align:center}
.auth-card .auth-head .crest{margin:0 auto 8px;display:block}
.auth-card .auth-head h1{color:#fff;font-size:1.3rem;margin:0}
.auth-card .auth-head p{margin:4px 0 0;font-size:.84rem;color:#bccbe0}
.auth-card .auth-form{padding:28px 30px}
.auth-card .auth-form .btn{width:100%;font-size:1rem;padding:13px}
.auth-card .auth-meta{display:flex;justify-content:space-between;font-size:.85rem;margin:14px 0 4px}
.auth-foot{padding:16px 30px;background:#f3f6fa;border-top:1px solid var(--line);
  font-size:.82rem;color:var(--muted);text-align:center}
.auth-bottom{padding:18px 0;text-align:center;color:#aebfd6;font-size:.82rem}
.auth-bottom a{color:#dde7f4}
.notice{background:#eef6f1;border:1px solid #cfe6da;color:var(--green-2);
  padding:11px 14px;border-radius:6px;font-size:.86rem;margin-bottom:18px}
.notice.warn{background:#fcf6e6;border-color:#ecdca6;color:#7a5d09}
.sso-badge{display:inline-block;background:var(--green);color:#fff;font-size:.7rem;
  padding:3px 9px;border-radius:20px;letter-spacing:.06em;text-transform:uppercase;font-weight:700}
.checkrow{display:flex;align-items:center;gap:8px;font-size:.88rem;margin:6px 0 18px}
.checkrow input{width:auto}

/* ---------- Responsive ---------- */
@media(max-width:920px){
  .grid-3,.grid-4{grid-template-columns:repeat(2,1fr)}
  .layout{grid-template-columns:1fr}
  .site-footer .fgrid{grid-template-columns:1fr 1fr}
  .stats .grid-4{grid-template-columns:1fr 1fr}
  .stats .stat:nth-child(2){border-right:0}
}
@media(max-width:680px){
  .mainnav{position:absolute;top:122px;left:0;right:0;background:var(--navy-2);display:none;z-index:40;padding:8px 0}
  .mainnav.open{display:block}
  .mainnav ul{flex-direction:column;gap:0;padding:0 14px}
  .mainnav a{padding:13px 10px;border-bottom:1px solid rgba(255,255,255,.08)}
  .nav-toggle{display:block}
  .masthead .container{position:relative}
  .grid-3,.grid-4,.grid-2{grid-template-columns:1fr}
  .hero h1{font-size:1.9rem}
  .stats .grid-4{grid-template-columns:1fr}
  .stats .stat{border-right:0;border-bottom:1px solid rgba(255,255,255,.12)}
  .quickstrip a{flex:1 1 50%;border-bottom:1px solid rgba(255,255,255,.18)}
  .utility .util-left{display:none}
}