:root {
  --bg: #0b1020;
  --panel: #141b31;
  --panel-2: #1c2542;
  --line: #2a3558;
  --text: #e8edf9;
  --muted: #93a0c4;
  --accent: #46c8ff;
  --go: #2fd27a;
  --warn: #ffb547;
  --bad: #ff5a6a;
  --gold: #ffd84d;
  color-scheme: dark;
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { margin: 0; height: 100%; }
body {
  background: var(--bg);
  color: var(--text);
  font: 16px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
h1, h2, h3 { margin: 0 0 .4em; line-height: 1.15; }
button, input, select {
  font: inherit; color: inherit;
}
input, select {
  background: var(--panel-2); border: 1px solid var(--line); border-radius: 10px;
  padding: .6em .8em; width: 100%;
}
input:focus, select:focus { outline: 2px solid var(--accent); outline-offset: 1px; }
button {
  background: var(--panel-2); border: 1px solid var(--line); border-radius: 10px;
  padding: .55em 1em; cursor: pointer; font-weight: 600;
}
button:hover:not(:disabled) { border-color: var(--accent); }
button:disabled { opacity: .5; cursor: not-allowed; }
button.big { font-size: 1.25rem; padding: .8em 1.2em; width: 100%; }
button.go { background: var(--go); border-color: var(--go); color: #04210f; }
button.primary { background: var(--accent); border-color: var(--accent); color: #031827; }
button.danger { border-color: var(--bad); color: var(--bad); }
button.ghost { background: transparent; }
.card {
  background: var(--panel); border: 1px solid var(--line); border-radius: 16px;
  padding: 18px; display: grid; gap: 14px;
}
label { display: grid; gap: 6px; color: var(--muted); font-size: .9rem; }
.muted { color: var(--muted); }
.ok { color: var(--go); }
.err { color: var(--bad); }

/* ---------- player page ---------- */
/* three.js puts an inline display:block on its canvas, hence !important */
body.player #gl { position: fixed; inset: 0; display: none !important; }
body.player.desktop #gl { display: block !important; }
body.player.desktop .lobby { display: none; }
.lobby { max-width: 480px; margin: 0 auto; padding: 32px 16px; display: grid; gap: 16px; }
.lobby h1 { font-size: 2.2rem; }
.sub { margin: -10px 0 0; color: var(--muted); }
#room { text-transform: uppercase; letter-spacing: .3em; font-size: 1.6rem; text-align: center; }
.howto { margin: 0; padding-left: 1.2em; color: var(--muted); display: grid; gap: 4px; }
.howto b { color: var(--text); }
.safety { margin: 0; color: var(--warn); font-size: .9rem; }
#status { min-height: 1.5em; text-align: center; margin: 0; }
#deskHelp {
  display: none; position: fixed; left: 50%; bottom: 12px; transform: translateX(-50%);
  background: rgba(0,0,0,.6); padding: 6px 12px; border-radius: 8px; font-size: .85rem; color: #ccd;
  max-width: calc(100vw - 32px); text-align: center;
}
body.desktop #deskHelp { display: block; }
body.desktop::after {
  content: ""; position: fixed; left: 50%; top: 50%; width: 8px; height: 8px; margin: -4px 0 0 -4px;
  border-radius: 50%; background: #fff; opacity: .7; pointer-events: none;
}

/* ---------- teacher page ---------- */
.teacher-wrap { max-width: 1400px; margin: 0 auto; padding: 16px; display: grid; gap: 16px; }
.topbar { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; justify-content: space-between; }
.topbar h1 { font-size: 1.5rem; margin: 0; }
.host-warning { color: var(--warn); font-size: .9rem; }
.grid-3 { display: grid; gap: 16px; grid-template-columns: 300px 1fr 360px; align-items: start; }
@media (max-width: 1100px) { .grid-3 { grid-template-columns: 1fr; } }
.join-card { text-align: center; }
.roomcode { font-size: 3.6rem; font-weight: 800; letter-spacing: .18em; color: var(--gold); line-height: 1; }
.qr { background: #fff; border-radius: 12px; padding: 10px; width: 220px; height: 220px; margin: 0 auto; }
.qr img, .qr svg { width: 100%; height: 100%; display: block; image-rendering: pixelated; }
.url { font-size: .85rem; word-break: break-all; color: var(--muted); }
.controls { display: flex; flex-wrap: wrap; gap: 8px; }
.timer { font-size: 2.4rem; font-weight: 800; font-variant-numeric: tabular-nums; }
.state-pill { display: inline-block; padding: 2px 10px; border-radius: 99px; background: var(--panel-2); border: 1px solid var(--line); font-size: .85rem; }
.state-pill.playing { border-color: var(--go); color: var(--go); }
.state-pill.ended { border-color: var(--gold); color: var(--gold); }
#map { width: 100%; aspect-ratio: 1; background: #0e1529; border-radius: 12px; border: 1px solid var(--line); display: block; }
table { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
th, td { padding: 6px 8px; text-align: left; border-bottom: 1px solid var(--line); }
th { color: var(--muted); font-weight: 600; font-size: .85rem; }
td.num, th.num { text-align: right; }
.dot { display: inline-block; width: 10px; height: 10px; border-radius: 50%; margin-right: 6px; vertical-align: middle; }
.tabs { display: flex; gap: 6px; }
.tabs button[aria-selected="true"] { background: var(--accent); color: #031827; border-color: var(--accent); }
.settings { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.settings label.check { display: flex; gap: 8px; align-items: center; grid-column: 1 / -1; }
.settings label.check input { width: auto; }
.login { max-width: 380px; margin: 12vh auto; padding: 0 16px; }
.kick { padding: 2px 8px; font-size: .8rem; }

/* ---------- podium overlay (teacher + spectator) ---------- */
.podium {
  position: fixed; inset: 0; background: rgba(5,8,18,.92); display: flex; flex-direction: column;
  align-items: center; justify-content: center; gap: 24px; z-index: 50; padding: 16px;
}
.podium[hidden] { display: none; }
.podium h2 { font-size: clamp(2rem, 6vw, 4rem); color: var(--gold); }
.podium .steps { display: flex; align-items: flex-end; gap: 12px; }
.podium .step {
  width: clamp(90px, 22vw, 220px); border-radius: 14px 14px 0 0; background: var(--panel-2);
  display: flex; flex-direction: column; align-items: center; justify-content: flex-start; padding: 12px 8px;
  border: 1px solid var(--line); text-align: center;
}
.podium .step .who { font-size: clamp(1rem, 3vw, 1.8rem); font-weight: 800; word-break: break-word; }
.podium .step .pts { font-size: clamp(1.4rem, 4vw, 2.6rem); font-weight: 800; color: var(--gold); }
.podium .s1 { height: 260px; } .podium .s2 { height: 200px; } .podium .s3 { height: 150px; }
.podium .rest { color: var(--muted); max-width: 700px; text-align: center; }

/* ---------- spectator page ---------- */
body.spectator { overflow: hidden; }
body.spectator canvas#view { position: fixed; inset: 0; width: 100vw; height: 100vh; display: block; }
.spec-hud { position: fixed; pointer-events: none; inset: 0; }
.spec-hud > * { pointer-events: auto; }
.spec-top { position: absolute; top: 12px; left: 50%; transform: translateX(-50%); text-align: center; text-shadow: 0 2px 6px #000; }
.spec-top .timer { font-size: 3rem; }
.spec-top .label { font-size: 1.1rem; color: var(--accent); }
.spec-board {
  position: absolute; top: 12px; right: 12px; width: 280px; background: rgba(10,16,32,.75);
  border: 1px solid var(--line); border-radius: 14px; padding: 12px; backdrop-filter: blur(4px);
}
.spec-board .row { display: flex; justify-content: space-between; gap: 8px; padding: 3px 0; font-size: 1.15rem; }
.spec-board .row.out { opacity: .5; }
.spec-cams {
  position: absolute; left: 12px; top: 12px; display: flex; flex-direction: column; gap: 6px; max-height: 70vh; overflow: auto;
}
.spec-cams button { text-align: left; background: rgba(10,16,32,.75); }
.spec-cams button[aria-pressed="true"] { border-color: var(--gold); color: var(--gold); }
.spec-feed { position: absolute; left: 12px; bottom: 12px; display: grid; gap: 4px; font-size: 1.1rem; text-shadow: 0 2px 6px #000; }
.spec-feed div { animation: fade 6s forwards; }
@keyframes fade { 0%, 80% { opacity: 1; } 100% { opacity: 0; } }
#minimap { position: absolute; right: 12px; bottom: 12px; width: 200px; height: 200px; border-radius: 12px; background: rgba(10,16,32,.75); border: 1px solid var(--line); }
.spec-connect { position: fixed; inset: 0; display: flex; align-items: center; justify-content: center; }
.spec-connect .card { width: min(380px, calc(100vw - 32px)); }
@media (max-width: 700px) {
  .spec-board { width: 180px; font-size: .9rem; }
  .spec-board .row { font-size: .95rem; }
  #minimap { width: 120px; height: 120px; }
}