/* Algo Classe Élève — page des élèves, pensée pour une tablette tenue à la main : grandes cibles, texte lisible, couleur toujours doublée d'un mot. */
:root {
  --bg: #F4F5F8; --panel: #fff; --ink: #1B1C2A; --muted: #6B6E85; --line: #E3E5EE; --line2: #D4D7E4;
  --accent: #5B5BD6; --accent-soft: #EEEEFD; --accent-ink: #3F3FB0; --green: #2F8F68; --green-soft: #E1F3EA; --amber: #C47F12; --amber-soft: #FDF0D8;
  --shadow: 0 1px 2px rgba(27, 28, 42, .06), 0 8px 24px -12px rgba(27, 28, 42, .14); --r: 18px;
  --font: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; color-scheme: light;
}
* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body { background: var(--bg); color: var(--ink); font: 400 17px/1.45 var(--font); -webkit-text-size-adjust: 100%; -webkit-tap-highlight-color: transparent; }
button, input, select { font: inherit; color: inherit; }
h1, h2 { margin: 0; font-weight: 700; letter-spacing: -.01em; }
h1 { font-size: 1.5rem; } h2 { font-size: 1.05rem; margin-bottom: 10px; }
p { margin: 0 0 8px; }
:focus-visible { outline: 3px solid color-mix(in srgb, var(--accent) 55%, transparent); outline-offset: 2px; }
.muted { color: var(--muted); } .small { font-size: .85rem; } .ok { color: var(--green); font-weight: 600; } .warn { color: var(--amber); background: var(--amber-soft); padding: 8px 12px; border-radius: 10px; }

.top { position: sticky; top: 0; z-index: 5; display: flex; justify-content: space-between; align-items: center; gap: 10px; padding: 10px 16px; background: rgba(255, 255, 255, .9); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.brand { display: flex; align-items: center; gap: 10px; font-size: 1.05rem; }
.brand img { border-radius: 7px; }
.lang { border: 1px solid var(--line2); border-radius: 10px; padding: 6px 10px; background: #fff; }
main { max-width: 1100px; margin: 0 auto; padding: 16px 16px 8px; display: grid; gap: 14px; }
.foot { max-width: 1100px; margin: 0 auto; padding: 4px 16px 24px; color: var(--muted); font-size: .8rem; text-align: center; }
.card { background: var(--panel); border-radius: var(--r); box-shadow: var(--shadow); padding: 18px; }
.banner { background: var(--amber-soft); color: #7A5410; border-radius: 12px; padding: 10px 14px; font-weight: 600; }

.msg { max-width: 520px; margin: 8vh auto 0; text-align: center; display: grid; gap: 8px; }
.msg.bad h1 { color: var(--amber); }
.pick { max-width: 640px; margin: 0 auto; width: 100%; display: grid; gap: 12px; }
.search { width: 100%; padding: 12px 14px; border: 1px solid var(--line2); border-radius: 12px; background: #fff; }
.names { display: grid; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 10px; }
.name { border: 1px solid var(--line2); background: #fff; border-radius: 14px; padding: 16px 10px; font-weight: 600; font-size: 1.05rem; cursor: pointer; min-height: 56px; }
.name:hover, .name:active { background: var(--accent-soft); border-color: var(--accent); }

.hello { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; flex-wrap: wrap; }
.link { background: none; border: 0; color: var(--accent); cursor: pointer; padding: 6px 0; font-weight: 500; }
.grid { display: grid; grid-template-columns: minmax(0, 1fr); gap: 14px; align-items: start; }
.col { display: grid; gap: 14px; align-content: start; }
@media (min-width: 860px) { .grid { grid-template-columns: minmax(300px, 400px) minmax(0, 1fr); } }

.focus .ph { font-size: clamp(1.4rem, 5vw, 2rem); font-weight: 700; line-height: 1.15; }
.focus .mode { display: flex; align-items: center; flex-wrap: wrap; gap: 8px 10px; margin: 8px 0 4px; color: var(--muted); }
.chip { background: var(--accent-soft); color: var(--accent-ink); border-radius: 999px; padding: 4px 14px; font-weight: 600; white-space: nowrap; }
.focus.silence .chip { background: #E7EEFB; color: #2D5BA8; } .focus.binome .chip { background: var(--green-soft); color: #1E6B4B; } .focus.commun .chip { background: var(--amber-soft); color: #8A5A0C; } .focus.libre .chip { background: #F0F1F7; color: var(--muted); }
.clock { font-variant-numeric: tabular-nums; font-size: clamp(3rem, 16vw, 5rem); font-weight: 700; letter-spacing: -.03em; line-height: 1.05; margin: 6px 0; }
.bar { height: 12px; border-radius: 999px; background: #E3E5EE; overflow: hidden; margin: 4px 0 10px; }
.bar i { display: block; height: 100%; width: 0; background: linear-gradient(90deg, #8E8EF0, var(--accent)); border-radius: 999px; transition: width .4s linear; }

.hand { display: grid; gap: 12px; }
.hand.up { background: var(--green-soft); }
.hand .big, .hand.up .big { font-size: 1.35rem; font-weight: 700; }
.reasons { display: flex; flex-wrap: wrap; gap: 8px; }
.chipbtn { border: 1px solid var(--line2); background: #fff; border-radius: 999px; padding: 10px 14px; cursor: pointer; font-weight: 500; min-height: 44px; }
.chipbtn[aria-pressed="true"] { background: var(--accent-soft); border-color: var(--accent); color: var(--accent-ink); font-weight: 700; box-shadow: inset 0 0 0 1px var(--accent); }
.chipbtn[aria-pressed="true"]::before { content: "✓ "; }
.btn { border: 0; border-radius: 16px; padding: 14px 20px; cursor: pointer; font-weight: 700; background: var(--accent); color: #fff; box-shadow: 0 8px 18px -10px var(--accent); }
.btn.big { padding: 22px 20px; font-size: 1.35rem; }
.btn:active { transform: translateY(1px); }
.btn.ghost { background: #fff; color: var(--ink); border: 1px solid var(--line2); box-shadow: none; }

.planc { overflow: hidden; }
.stagebox { position: relative; width: 100%; }
.stage { position: absolute; left: 0; top: 0; --pf: 14px; }
.stage .board, .stage .deskbox, .stage .wall { position: absolute; border-radius: 8px; display: grid; place-items: center; color: var(--muted); font-size: calc(var(--pf) * .8); }
.stage .board { background: #E9EAF2; } .stage .deskbox { background: #F0F1F7; border: 1px dashed var(--line2); } .stage .wall { background: #D9DBE8; }
.seat { position: absolute; display: grid; place-content: center; gap: 1px; text-align: center; border-radius: 10px; background: #F3F4FA; border: 1.5px solid var(--line); line-height: 1.1; padding: 2px; }
.seat .sn { font-size: var(--pf); font-weight: 500; word-break: break-word; }
.seat.mine { background: var(--accent); border-color: var(--accent-ink); color: #fff; box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent) 35%, transparent); z-index: 2; }
.seat.mine .sn { font-weight: 700; }
.seat .you { font-size: calc(var(--pf) * .7); font-weight: 700; letter-spacing: .04em; text-transform: uppercase; opacity: .9; }
.seat.up { border-color: var(--green); background: var(--green-soft); }
.seat.up.mine { background: var(--accent); }
.seat .wh { position: absolute; top: -8px; right: -6px; font-size: calc(var(--pf) * 1.1); }
@media (prefers-reduced-motion: no-preference) { .seat.up .wh { animation: wave 1.6s ease-in-out infinite; transform-origin: 70% 90%; } }
@keyframes wave { 0%, 100% { transform: rotate(0); } 50% { transform: rotate(14deg); } }