/* Campus theme (v13) */
:root{
  --bg-top: #0b0f16;
  --bg-bottom: #111a27;
  --bg: var(--bg-top);

  --surface: rgba(255,255,255,.06);
  --surface2: rgba(255,255,255,.09);
  --border: rgba(255,255,255,.14);

  --text: rgba(255,255,255,.92);
  --muted: rgba(255,255,255,.72);
  --muted2: rgba(255,255,255,.56);

  --accent: #84c5ff;
  --accent2: #b7ffcf;

  --danger: #fb7185;
  --ok: #86efac;

  --shadow: 0 20px 60px rgba(0,0,0,.45);
  --shadow-card: 0 14px 40px rgba(0,0,0,.28);
  --radius: 18px;
  --radius-sm: 14px;
  --radius-lg: 22px;

  --surface3: rgba(255,255,255,.12);
  --border-strong: rgba(255,255,255,.20);
}


@media (prefers-color-scheme: light){
  :root{
    --bg-top:#f7f8fb;
    --bg-bottom:#ffffff;
    --bg: var(--bg-top);

    --surface: rgba(10,16,28,.05);
    --surface2: rgba(10,16,28,.07);
    --surface3: rgba(10,16,28,.10);
    --border: rgba(10,16,28,.12);
    --border-strong: rgba(10,16,28,.18);

    --text: rgba(10,16,28,.92);
    --muted: rgba(10,16,28,.70);
    --muted2: rgba(10,16,28,.56);

    --shadow: 0 18px 55px rgba(10,16,28,.12);
    --shadow-card: 0 14px 40px rgba(10,16,28,.10);
  }
}


*{ box-sizing:border-box; }
html,body{ height:100%; }
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial;
  color: var(--text);
  background:
    radial-gradient(1200px 700px at 20% -10%, color-mix(in oklab, var(--accent) 16%, transparent), transparent 60%),
    radial-gradient(900px 600px at 70% 10%, color-mix(in oklab, var(--accent2) 12%, transparent), transparent 55%),
    radial-gradient(1000px 700px at 40% 120%, color-mix(in oklab, var(--accent2) 8%, transparent), transparent 60%),
    linear-gradient(180deg, var(--bg-top), var(--bg-bottom));
}

/* Text helpers */
.muted{ color: var(--muted); }
.muted2{ color: var(--muted2); }


a{ color: inherit; text-decoration: none; }
a:hover{ text-decoration: underline; }

:focus-visible{
  outline: 3px solid color-mix(in oklab, var(--accent) 55%, transparent);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* Motion + micro-interactions */
.btn, .pill, .card, .tag{ transition: background .15s ease, border-color .15s ease, box-shadow .15s ease, transform .15s ease; }
.btn:active{ transform: translateY(1px); }
.card:hover{ border-color: var(--border-strong); box-shadow: var(--shadow-card); }

@media (prefers-reduced-motion: reduce){
  *, *::before, *::after{ transition: none !important; animation: none !important; }
}

/* Scrollbars (best effort) */
*{ scrollbar-width: thin; scrollbar-color: color-mix(in oklab, var(--text) 22%, transparent) transparent; }
*::-webkit-scrollbar{ width: 10px; height: 10px; }
*::-webkit-scrollbar-thumb{ background: color-mix(in oklab, var(--text) 18%, transparent); border-radius: 999px; border: 3px solid transparent; background-clip: padding-box; }
*::-webkit-scrollbar-thumb:hover{ background: color-mix(in oklab, var(--text) 24%, transparent); border: 3px solid transparent; background-clip: padding-box; }
*::-webkit-scrollbar-track{ background: transparent; }

.container{ max-width: 1100px; margin:0 auto; padding: 18px 18px 60px; }

.topbar{
  position: sticky; top:0; z-index: 20;
  backdrop-filter: blur(14px);
  background: color-mix(in oklab, var(--bg-top) 76%, transparent);
  border-bottom: 1px solid var(--border);
}
.nav{
  display:flex; align-items:center; justify-content:space-between; gap: 12px;
  max-width: 1100px; margin:0 auto; padding: 12px 18px;
}
.brand{
  display:flex; align-items:center; gap:10px;
  font-weight: 720; letter-spacing: .2px;
}
.brand .dot{
  width:10px; height:10px; border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent2));
  box-shadow: 0 0 0 6px color-mix(in oklab, var(--accent) 14%, transparent);
}
.navlinks{ display:flex; align-items:center; gap: 10px; flex-wrap:wrap; justify-content:flex-end; }
.pill{
  display:inline-flex; align-items:center; gap:8px;
  padding: 10px 12px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--surface);
}
.pill:hover{ background: var(--surface2); border-color: var(--border-strong); text-decoration:none; }

.btn{
  appearance:none; border:1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  cursor:pointer;
  font: inherit;
  line-height: 1;
  display:inline-flex; align-items:center; justify-content:center; gap: 8px;
}
.btn:hover{ background: var(--surface2); border-color: var(--border-strong); }
.btn:focus-visible{ outline:none; box-shadow: 0 0 0 4px color-mix(in oklab, var(--accent) 22%, transparent); }
.btn.primary{
  border-color: color-mix(in oklab, var(--accent) 38%, transparent);
  background: linear-gradient(135deg, color-mix(in oklab, var(--accent) 22%, transparent), color-mix(in oklab, var(--accent2) 18%, transparent));
}
.btn.primary:hover{
  background: linear-gradient(135deg, color-mix(in oklab, var(--accent) 28%, transparent), color-mix(in oklab, var(--accent2) 22%, transparent));
}
.btn.danger{ border-color: rgba(251,113,133,.35); }
.btn.ghost{ background: transparent; }
.btn.small{ padding: 8px 10px; border-radius: 10px; font-size: 14px; }

.hero{
  padding: 30px 0 10px;
  display:grid; grid-template-columns: 1.35fr .65fr; gap: 18px;
  align-items: start;
}
.hero h1{ margin:0; font-size: clamp(28px, 4vw, 40px); letter-spacing: -0.6px; }
.hero p{ margin: 10px 0 0; color: var(--muted); max-width: 62ch; }
.heroCard{
  border:1px solid var(--border);
  background: var(--surface);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: var(--shadow);
}
.kv{
  display:grid; grid-template-columns: 1fr 1fr; gap: 10px;
}
.kv .item{
  border:1px solid var(--border);
  background: var(--surface2);
  border-radius: var(--radius-sm);
  padding: 10px;
}
.kv .k{ font-size:12px; color: var(--muted2); }
.kv .v{ font-size:14px; margin-top: 4px; }

.sectionTitle{
  margin: 26px 0 10px;
  display:flex; align-items: baseline; justify-content:space-between; gap: 10px;
}
.sectionTitle h2{ margin:0; font-size: 18px; letter-spacing: .1px; }
.sectionTitle .muted{ color: var(--muted2); font-size: 14px; }

.grid{
  display:grid;
  grid-template-columns: repeat(2, minmax(0,1fr));
  gap: 14px;
}
@media (max-width: 860px){
  .hero{ grid-template-columns: 1fr; }
}
@media (max-width: 720px){
  .grid{ grid-template-columns: 1fr; }
}

.card{
  border:1px solid var(--border);
  background: var(--surface);
  border-radius: var(--radius);
  padding: 14px;
  box-shadow: var(--shadow-card);
}
.card h3{ margin:0 0 6px; font-size: 16px; }
.card p{ margin: 0; color: var(--muted); }
.card .meta{
  margin-top: 10px;
  display:flex; flex-wrap: wrap; gap: 8px;
  color: var(--muted2);
  font-size: 13px;
}
.tag{
  display:inline-flex; align-items:center; gap: 6px;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface2);
}

/* chips (e.g., glossary terms, used terms) */
.gchip{
  display:inline-flex;
  align-items:center;
  gap: 6px;
  padding: 6px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-size: 13px;
  text-decoration: none;
  cursor: pointer;
}
.gchip:hover{ background: var(--surface2); }
.gchip:focus-visible{ outline: 2px solid color-mix(in oklab, var(--accent) 45%, transparent); outline-offset: 2px; }

.footer{
  margin-top: 40px;
  padding-top: 18px;
  border-top: 1px solid var(--border);
  color: var(--muted2);
  display:flex; justify-content:space-between; gap: 12px; flex-wrap:wrap;
  font-size: 13px;
}
.footer a{ color: var(--muted); }
.footer a:hover{ color: var(--text); text-decoration:none; }

.footerVerBtn{
  border:none;
  background:transparent;
  color: var(--muted);
  padding: 0;
  font: inherit;
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 2px;
}
.footerVerBtn:hover{ color: var(--text); }
.footerVerBtn:focus-visible{ outline: 2px solid color-mix(in oklab, var(--accent) 45%, transparent); outline-offset: 3px; border-radius: 10px; }

.footerChangelog{
  flex: 1 1 320px;
  max-width: 640px;
}
.footerChangelog summary{
  cursor:pointer;
  user-select:none;
  color: var(--muted);
  display:flex;
  gap: 8px;
  align-items:baseline;
  flex-wrap:wrap;
  list-style:none;
}
.footerChangelog summary::-webkit-details-marker{ display:none; }
.footerChangelog .footerVersion{ color: var(--muted2); }
.footerChangelog .footerSep{ color: var(--muted2); }
.footerChangelog .footerLink{ color: var(--muted); text-decoration: underline; text-underline-offset: 2px; }
.footerChangelog .footerDate{ color: var(--muted2); margin-left:auto; }
.footerChangelog ul{
  margin: 10px 0 0;
  padding-left: 18px;
  color: var(--muted);
}
.footerChangelog li{ margin: 6px 0; }
.footerChangelog[open]{
  border: 1px solid var(--border);
  background: var(--surface2);
  border-radius: 16px;
  padding: 10px 12px;
}
.footerChangelog[open] summary{ color: var(--text); }

.notice{
  border:1px solid color-mix(in oklab, var(--accent) 34%, transparent);
  background: color-mix(in oklab, var(--accent) 12%, transparent);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  color: var(--text);
}
.notice.danger{
  border-color: rgba(251,113,133,.30);
  background: rgba(251,113,133,.10);
}
.notice.ok{
  border-color: rgba(134,239,172,.30);
  background: rgba(134,239,172,.10);
}
.notice .title{ font-weight:650; }
.notice p{ margin: 6px 0 0; color: var(--muted); }

/* Modal */
.campus-modal-open{ overflow:hidden; }
.modal{ position:fixed; inset:0; z-index:50; display:grid; place-items:center; padding: 16px; }
.modal[hidden]{ display:none; }
.modal .backdrop{ position:absolute; inset:0; background: rgba(0,0,0,.55); }
.modal .panel{
  position: relative;
  width: min(620px, 100%);
  /* Keep long dialogs usable: allow internal scrolling while locking background scroll */
  max-height: calc(100vh - 32px);
  display:flex;
  flex-direction:column;
  border:1px solid var(--border);
  background: color-mix(in oklab, var(--bg-top) 92%, transparent);
  backdrop-filter: blur(18px);
  border-radius: 22px;
  box-shadow: var(--shadow);
  overflow: hidden;
}
.modal .panelHeader{
  display:flex; align-items:center; justify-content:space-between; gap: 10px;
  padding: 14px 14px 10px;
  border-bottom: 1px solid var(--border);
}
.modal .panelHeader .h{
  font-weight: 700;
}
.modal .panelBody{
  padding: 14px;
  /* Scroll within the modal for long content (handbook, glossary, tasklibs, etc.) */
  overflow:auto;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior: contain;
  flex: 1 1 auto;
}
.modal .panelFooter{ padding: 12px 14px 14px; border-top: 1px solid var(--border); display:flex; gap:10px; justify-content:flex-end; flex-wrap:wrap; }
.field{ display:grid; gap:6px; margin: 10px 0; }
label{ font-size: 13px; color: var(--muted2); }
input[type="text"], input[type="password"], input[type="date"], textarea, select{
  width:100%;
  padding: 12px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface2);
  color: var(--text);
  font: inherit;
}
textarea{ min-height: 120px; resize: vertical; }
input[type="text"]:focus, input[type="password"]:focus, input[type="date"]:focus, textarea:focus, select:focus{
  outline: none;
  border-color: color-mix(in oklab, var(--accent) 35%, var(--border));
  box-shadow: 0 0 0 4px color-mix(in oklab, var(--accent) 14%, transparent);
}

hr{ border:none; border-top: 1px solid var(--border); margin: 12px 0; }

kbd{
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono";
  font-size: 12px;
  padding: 2px 6px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--surface2);
  color: var(--muted);
}

/* Auth/visibility helpers */
html:not(.authed) .requires-auth{ display:none !important; }
html.authed .requires-noauth{ display:none !important; }
html:not(.admin-authed) .requires-admin{ display:none !important; }
html.admin-authed .requires-noadmin{ display:none !important; }

.small{ font-size: 13px; color: var(--muted2); }