:root{
  --blue:#f19e03ba; --deep:#f3aa0e; --yellow:#f68b1e; --gold:#f6a900;
  --white:#d96060; --ink:#141401; --muted:#898989; --glass:rgba(255, 255, 255, 0.88);
  --shadow:0 18px 50px rgba(131, 171, 237, 0.18); --radius:22px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;color:var(--ink);
  min-height:100vh;background:
    radial-gradient(circle at 15% 10%,rgba(255,196,0,.28),transparent 24%),
    radial-gradient(circle at 85% 20%,rgba(191, 208, 227, 0.25),transparent 28%),
    linear-gradient(135deg,#fdfdfc 0%,#f68b1e 42%,#f5f5f5 100%);
  position:relative;
}
body:before{
  content:"";position:fixed;inset:0;pointer-events:none;opacity:.11;
  background-image:radial-gradient(#74c132 1px,transparent 1px),radial-gradient(#f68b1e 1px,transparent 1px);
  background-size:18px 18px,31px 31px;background-position:0 0,9px 11px;
}
.topbar{
  position:sticky;top:0;z-index:50;display:flex;justify-content:space-between;align-items:center;
  padding:12px 5%;background:rgba(155, 88, 11, 0.539);backdrop-filter:blur(14px);
  box-shadow:0 5px 24px rgba(0,0,0,.18)
}
.brand{display:flex;align-items:center;gap:10px;color:#fff;text-decoration:none}
.logo-mark,.footer-logo{
  width:52px;height:52px;border-radius:50%;display:grid;place-items:center;font-weight:950;
  background:linear-gradient(145deg,var(--yellow),#fff1de);color:var(--deep);
  border:3px solid #fff;box-shadow:0 0 0 3px rgba(255,196,0,.3)
}
.brand b{display:block;font-size:.92rem;letter-spacing:.7px}.brand small{color:#ffd94d}
nav{display:flex;gap:8px;flex-wrap:wrap}
button,.btn{
  border:0;border-radius:13px;padding:11px 16px;font-weight:800;cursor:pointer;
  transition:.2s ease;font-size:.92rem
}
nav button{background:rgba(13, 129, 172, 0.669);color:#fff}
button:hover,.btn:hover{transform:translateY(-2px);filter:brightness(1.04)}
.btn-primary{background:linear-gradient(135deg,var(--yellow),var(--gold));color:#f68b1e}
.btn-blue{background:linear-gradient(135deg,#f68b1e,var(--blue));color:#fff}
.btn-light{background:#fff;color:var(--blue);border:1px solid #f5f5f5}
.btn-danger{background:#9b1c31;color:#fff}
.back{display:inline-flex;gap:7px;align-items:center;margin-bottom:18px}
main{max-width:1240px;margin:auto;padding:28px 5% 70px;position:relative}
.hero{
  min-height:390px;display:grid;place-items:center;text-align:center;padding:55px 20px;
  background:linear-gradient(135deg,rgba(79, 122, 168, 0.96),rgba(0,29,66,.96));
  border-radius:34px;box-shadow:var(--shadow);overflow:hidden;position:relative;color:#fff
}
.hero:after{content:"";position:absolute;width:520px;height:520px;border-radius:50%;right:-160px;top:-220px;background:rgba(255,196,0,.18)}
.hero h1{font-size:clamp(2.2rem,5vw,4.6rem);line-height:1;margin:12px 0}
.hero p{max-width:760px;color:#f5f5f5;font-size:1.05rem}
.hero-badge{display:inline-block;padding:8px 13px;border-radius:999px;background:rgba(255,196,0,.18);color:#ffd83d;border:1px solid rgba(255,216,61,.4);font-weight:900}
.searchbar{display:flex;gap:10px;max-width:760px;margin:25px auto 0}
input,select,textarea{
  width:100%;padding:13px 15px;border:1px solid #ededed;border-radius:13px;background:#fff;color:var(--ink);
  outline:none;font:inherit
}
textarea{min-height:150px;resize:vertical}
input:focus,select:focus,textarea:focus{border-color:#f68b1e;box-shadow:0 0 0 4px rgba(0,101,179,.09)}
.section-title{display:flex;justify-content:space-between;align-items:end;gap:15px;margin:40px 0 18px}
.section-title h2{margin:0;font-size:1.65rem}.section-title p{margin:4px 0 0;color:var(--muted)}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:18px}
.card{
  background:var(--glass);border:1px solid rgba(222, 142, 142, 0.943);border-radius:var(--radius);
  padding:21px;box-shadow:0 10px 35px rgba(0,35,85,.10);backdrop-filter:blur(8px)
}
.card h3{margin:5px 0 9px}.card p{color:var(--muted);line-height:1.55}.card .actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:16px}
.number{width:40px;height:40px;border-radius:12px;background:var(--blue);color:#fff;display:grid;place-items:center;font-weight:900}
.badge{display:inline-block;padding:5px 9px;border-radius:99px;background:#fff0a8;color:#654b00;font-size:.78rem;font-weight:900}
.path{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:18px}.path span{background:#fff;padding:6px 10px;border-radius:9px;color:var(--muted);font-size:.82rem}
.empty{text-align:center;padding:40px;color:var(--muted)}
.unit-card{display:flex;gap:15px;align-items:flex-start}.unit-card .number{flex:0 0 40px}
.year-grid{grid-template-columns:repeat(5,1fr)}
.year-card{text-align:center}
.paper{border-left:5px solid var(--yellow)}
.question{background:#f5f5f5;border:1px solid #f5f5f5;border-radius:14px;padding:14px;margin:10px 0}
.question strong{display:block;margin-bottom:7px}
.timetable{white-space:pre-wrap;line-height:1.7;background:#f5f5f5;border-radius:16px;padding:20px;border:1px dashed #dcdcdc;min-height:180px}
.admin-tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:20px}
table{width:100%;border-collapse:collapse;background:#e61b1b70;border-radius:16px;overflow:hidden}
th,td{padding:12px;border-bottom:1px solid #f5f5f5;text-align:left;vertical-align:top}th{background:#282828;color:#fff}
footer{padding:24px 5%;background:#1f1f1f;color:#f5f5f5;display:flex;align-items:center;gap:12px}
footer .footer-logo{width:42px;height:42px;border-width:2px}footer small{color:#d0d0d0;margin-left:auto}
.toast{position:fixed;right:20px;bottom:20px;background:#1f1f1f;color:#fff;padding:14px 18px;border-radius:14px;box-shadow:var(--shadow);transform:translateY(130px);opacity:0;transition:.3s;z-index:100}
.toast.show{transform:none;opacity:1}
.modal{position:fixed;inset:0;background:rgba(0,20,45,.7);display:grid;place-items:center;padding:20px;z-index:80}
.modal-box{max-width:700px;width:100%;max-height:90vh;overflow:auto;background:#483909;border-radius:24px;padding:25px;box-shadow:var(--shadow)}
.modal-head{display:flex;justify-content:space-between;gap:15px;align-items:center}
.download-overlay{position:fixed;inset:0;display:none;place-items:center;background:rgba(0,20,45,.72);z-index:90;color:#fff}
.download-overlay.show{display:grid}
.loader{width:75px;height:75px;border:8px solid rgba(6, 108, 225, 0.884);border-top-color:var(--yellow);border-radius:50%;animation:spin 1s linear infinite;margin:auto}
@keyframes spin{to{transform:rotate(360deg)}}
@media(max-width:720px){
  .topbar{align-items:flex-start;gap:10px}.topbar nav{justify-content:flex-end}.topbar nav button{padding:8px 10px;font-size:.78rem}
  .brand b{font-size:.72rem}.hero{min-height:330px}.searchbar{flex-direction:column}.year-grid{grid-template-columns:repeat(2,1fr)}
  footer{flex-wrap:wrap}footer small{margin-left:0;width:100%}
}
@media print{.topbar,footer,.back,.no-print{display:none!important}body{background:#fff}.card{box-shadow:none}}

/* ---- course announcements ---- */
.announcements{margin:18px 0 24px;padding:16px;border-radius:16px;background:#fff1de;border:1px solid #f0dca5}
.announce-head{display:flex;align-items:center;gap:10px;margin-bottom:6px}
.announce-count{min-width:24px;height:24px;padding:0 7px;border-radius:99px;background:#ef4444;color:#fff;font-size:.78rem;font-weight:900;display:inline-grid;place-items:center}
.announcement{background:#fff;border-left:4px solid var(--gold);border-radius:10px;padding:12px 14px;margin:10px 0;box-shadow:0 2px 8px rgba(0,0,0,.05)}
.announcement p{margin:0 0 6px;color:var(--ink);white-space:pre-wrap;line-height:1.55}
.announcement small{color:var(--muted)}
.announce-empty{margin:6px 0 0;color:var(--muted)}
/* decorative circle must not block taps on the search box */
.hero:after{pointer-events:none}

/* past paper: Save PDF and Print are separate */
.paper-actions{display:flex;flex-wrap:wrap;gap:14px 36px;margin-top:20px;padding-top:16px;border-top:1px solid #f5f5f5}.paper-action-group{display:flex;flex-direction:column;gap:6px;min-width:140px}.paper-action-label{font-size:12px;font-weight:800;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}@media(max-width:520px){.paper-actions{flex-direction:column}.paper-action-group,.paper-action-group .btn{width:100%}}

/* Past papers: no underlines on buttons */
html body a.btn,html body a.btn:hover,html body a.btn:focus,html body a.btn:active,html body a.btn:visited,html body button.btn{text-decoration:none!important}