:root {
  --bg: #F4F3F0;
  --panel: #FFFFFF;
  --ink: #1F2430;
  --ink-2: #5A6170;
  --ink-3: #8D93A0;
  --line: #E4E2DD;
  --line-2: #D3D0C9;
  --accent: #4F5BD5;
  --accent-soft: #ECEDFC;
  --danger: #D1495B;
  --danger-soft: #FCEBED;
  --warn: #B7791F;
  --warn-soft: #FDF4E3;
  --ok: #2F855A;
  --ok-soft: #E8F5EE;
  --radius: 12px;
  --shadow: 0 1px 2px rgba(20, 24, 40, .06), 0 4px 16px rgba(20, 24, 40, .06);
  color-scheme: light;
}
* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font: 14px/1.45 Figtree, system-ui, -apple-system, "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased; overflow: hidden;
}
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }
h2 { font-size: 13px; text-transform: uppercase; letter-spacing: .06em; color: var(--ink-2); margin: 0 0 8px; font-weight: 600; }
h3 { font-size: 15px; margin: 0 0 6px; }
.muted { color: var(--ink-3); }
.small { font-size: 12px; }

/* ---------- app shell ---------- */
.app { display: grid; grid-template-rows: auto 1fr; grid-template-columns: minmax(0, 1fr); height: 100%; }
.topbar {
  display: flex; align-items: center; gap: 12px; padding: 10px 16px;
  background: var(--panel); border-bottom: 1px solid var(--line);
  padding-top: max(10px, env(safe-area-inset-top));
}
.brand { border: 0; background: none; padding: 0; color: inherit; display: flex; align-items: center; gap: 10px; font-weight: 700; font-family: Poppins, Figtree, sans-serif; font-size: 16px; white-space: nowrap; }
.brand .logo { width: 30px; height: 30px; border-radius: 9px; background: linear-gradient(135deg, #8E9BF5, #F2A7B8); display: grid; place-items: center; color: #fff; font-size: 15px; }
.tabs { display: flex; gap: 4px; background: var(--bg); padding: 4px; border-radius: 12px; margin: 0 auto; overflow-x: auto; }
.crumb { display: flex; align-items: center; gap: 8px; min-width: 0; }
.crumb .sep { color: var(--ink-3); font-size: 18px; }
.crumb-select { width: auto; max-width: 220px; font-weight: 600; min-height: 34px; padding: 5px 8px; }
.crumb-title { font-weight: 600; white-space: nowrap; }
.tab {
  border: 0; background: transparent; padding: 7px 14px; border-radius: 9px; font-weight: 600; color: var(--ink-2);
  display: flex; align-items: center; gap: 8px; white-space: nowrap;
}
.tab .num { width: 20px; height: 20px; border-radius: 50%; background: var(--line); display: grid; place-items: center; font-size: 11px; color: var(--ink-2); }
.tab.active { background: var(--panel); color: var(--ink); box-shadow: var(--shadow); }
.tab.active .num { background: var(--accent); color: #fff; }
.top-actions { display: flex; gap: 6px; align-items: center; margin-left: auto; }
.privacy { font-size: 12px; color: var(--ok); background: var(--ok-soft); border-radius: 99px; padding: 4px 10px; white-space: nowrap; }

.btn {
  border: 1px solid var(--line-2); background: var(--panel); border-radius: 9px; padding: 7px 12px; font-weight: 500;
  display: inline-flex; align-items: center; gap: 6px; justify-content: center; white-space: nowrap; min-height: 36px;
  transition: background .12s, border-color .12s;
}
.btn:hover { background: #FAFAF8; border-color: #C3BFB6; }
.btn:disabled { opacity: .45; cursor: default; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover { background: #4450C4; }
.btn.danger { color: var(--danger); }
.btn.ghost { border-color: transparent; background: transparent; }
.btn.ghost:hover { background: var(--bg); }
.btn.sm { padding: 4px 9px; min-height: 30px; font-size: 13px; }
.btn.icon { padding: 6px; width: 36px; }
.btn.on { background: var(--accent-soft); border-color: var(--accent); color: var(--accent); }
.btn-row { display: flex; gap: 6px; flex-wrap: wrap; }
.seg { display: inline-flex; border: 1px solid var(--line-2); border-radius: 9px; overflow: hidden; background: var(--panel); }
.seg button { border: 0; background: transparent; padding: 6px 11px; min-height: 34px; font-weight: 500; color: var(--ink-2); }
.seg button + button { border-left: 1px solid var(--line); }
.seg button.on { background: var(--accent-soft); color: var(--accent); }

.view { display: none; min-height: 0; }
.view.active { display: grid; grid-template-columns: 300px 1fr; min-height: 0; }
.sidebar { background: var(--panel); border-right: 1px solid var(--line); overflow-y: auto; padding: 14px; display: flex; flex-direction: column; gap: 16px; }
.section { display: flex; flex-direction: column; gap: 8px; }
.section + .section { border-top: 1px solid var(--line); padding-top: 14px; }
.field { display: flex; flex-direction: column; gap: 4px; }
.field > span { font-size: 12px; color: var(--ink-2); font-weight: 500; }
.input, select.input, textarea.input {
  border: 1px solid var(--line-2); border-radius: 9px; padding: 7px 10px; background: #fff; min-height: 36px; width: 100%;
}
.input:focus, textarea:focus, select:focus { outline: 2px solid var(--accent-soft); border-color: var(--accent); }
.row { display: flex; gap: 6px; align-items: center; }
.row > .grow { flex: 1; min-width: 0; }
label.check { display: flex; gap: 8px; align-items: center; cursor: pointer; }
label.check input { width: 18px; height: 18px; accent-color: var(--accent); }
.hint { font-size: 12px; color: var(--ink-3); }
[hidden] { display: none !important; }
#toolSeg button, #grpModeSeg button { flex: 1; }
label.check input { flex-shrink: 0; }
label.check.opt { align-items: flex-start; }
label.check.opt input { margin-top: 1px; }
label.check.opt > span { display: flex; flex-direction: column; gap: 1px; font-weight: 500; }
label.check.opt .hint { font-weight: 400; }
details.more summary { cursor: pointer; font-size: 12px; font-weight: 500; color: var(--ink-2); }
details.more[open] summary { margin-bottom: 8px; }
kbd { font: 11px Figtree, sans-serif; border: 1px solid var(--line-2); border-bottom-width: 2px; border-radius: 4px; padding: 0 4px; background: #fff; }

/* ---------- room builder ---------- */
.stage { position: relative; min-height: 0; min-width: 0; display: flex; flex-direction: column; }
.stage-toolbar { display: flex; gap: 8px; align-items: center; padding: 10px 14px; flex-wrap: wrap; border-bottom: 1px solid var(--line); background: rgba(255,255,255,.7); }
.stage-toolbar .spacer { flex: 1; }
#roomSvg { flex: 1; width: 100%; min-height: 0; touch-action: none; user-select: none; -webkit-user-select: none; background: #FBFAF8; display: block; }
.palette-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; }
.pal-item {
  border: 1px solid var(--line-2); border-radius: 10px; background: #fff; padding: 8px 6px; display: flex; flex-direction: column; align-items: center; gap: 4px;
  font-size: 12px; font-weight: 500; touch-action: none; user-select: none; -webkit-user-select: none;
}
.pal-sub { grid-column: 1 / -1; font-size: 11px; font-weight: 800; letter-spacing: .07em; text-transform: uppercase; color: var(--ink-2); margin-top: 8px; }
.pal-item:hover { border-color: var(--accent); background: var(--accent-soft); }
.pal-item svg { width: 44px; height: 30px; }
.statusbar { padding: 6px 14px; font-size: 12px; color: var(--ink-2); border-top: 1px solid var(--line); background: #fff; display: flex; gap: 16px; flex-wrap: wrap; }
.statusbar .bad { color: var(--danger); font-weight: 600; }
.zoom { position: absolute; right: 14px; bottom: 44px; display: flex; flex-direction: column; gap: 4px; }
.zoom .btn { width: 38px; height: 38px; padding: 0; box-shadow: var(--shadow); }
.drag-ghost { position: fixed; pointer-events: none; z-index: 1000; transform: translate(-50%, -50%); padding: 6px 12px; border-radius: 99px; background: var(--ink); color: #fff; font-weight: 600; font-size: 13px; box-shadow: 0 8px 24px rgba(0,0,0,.2); white-space: nowrap; opacity: .92; }

/* svg builder styles */
.b-floor { fill: #fff; }
.b-wall { fill: none; stroke: #39404E; stroke-width: .28; stroke-linejoin: round; stroke-linecap: round; }
.b-walllen { font: 600 .5px Figtree, sans-serif; fill: #6B7180; text-anchor: middle; dominant-baseline: middle; }
.b-table { fill: #EDE6DA; stroke: #B9AE9C; stroke-width: .06; }
.b-teacher { fill: #DCE3EE; stroke: #8E9BB2; stroke-width: .06; }
.b-bench { fill: #DDE7E3; stroke: #93ADA3; stroke-width: .06; }
.b-fix { fill: #E4E0D6; stroke: #9C9584; stroke-width: .06; }
.b-fix-bookcase { fill: #E9DCC8; stroke: #A8916F; }
.b-fix-filing, .b-fix-lockers { fill: #DCE3EA; stroke: #8496A8; }
.b-fix-trolley { fill: #E2DDEE; stroke: #8F86A8; }
.b-fix-sink { fill: #E3ECEF; stroke: #8AA2AA; }
.b-fix-fume { fill: #E7E3D9; stroke: #9A927E; }
.b-fix-rug { fill: #F1E2D3; stroke: #C9A98A; stroke-dasharray: .2 .15; }
.b-seat { fill: #fff; stroke: #8D93A0; stroke-width: .06; cursor: pointer; }
.b-seat.off { fill: #E7E5E0; stroke: #B9B6AE; }
.b-seatnum { font: 600 .32px Figtree, sans-serif; fill: #6B7180; text-anchor: middle; dominant-baseline: central; pointer-events: none; }
.b-label { font: 600 .48px Figtree, sans-serif; fill: #6B6253; text-anchor: middle; dominant-baseline: central; pointer-events: none; }
.b-sel { fill: none; stroke: var(--accent); stroke-width: .08; stroke-dasharray: .25 .15; pointer-events: none; }
.b-bad { fill: rgba(209,73,91,.12); stroke: var(--danger); stroke-width: .08; pointer-events: none; }
.b-item { cursor: grab; }
.b-item.hidden-item { opacity: .35; }
.b-vertex { fill: #fff; stroke: var(--accent); stroke-width: .1; cursor: move; }
.b-vertex.sel { fill: var(--accent); }
.b-wallhit { stroke: transparent; stroke-width: .8; cursor: copy; fill: none; }
.b-wallhit:hover { stroke: rgba(79,91,213,.18); }
.b-draw { fill: rgba(79,91,213,.06); stroke: var(--accent); stroke-width: .12; stroke-dasharray: .3 .2; stroke-linejoin: round; }
.b-drawpt { fill: var(--accent); }

/* ---------- students ---------- */
.content { overflow-y: auto; padding: 18px; min-width: 0; }
.cols { display: grid; grid-template-columns: minmax(320px, 1fr) minmax(320px, 1fr); gap: 18px; align-items: start; max-width: 1280px; }
.card { background: var(--panel); border-radius: var(--radius); box-shadow: var(--shadow); padding: 16px; display: flex; flex-direction: column; gap: 12px; }
.student-list { display: flex; flex-direction: column; border: 1px solid var(--line); border-radius: 10px; overflow: hidden; }
.srow { display: grid; grid-template-columns: 28px 1fr auto auto 32px; gap: 8px; align-items: center; padding: 5px 8px; border-top: 1px solid var(--line); }
.srow:first-child { border-top: 0; }
.srow .idx { color: var(--ink-3); font-size: 12px; text-align: right; }
.srow input.name { border: 1px solid transparent; border-radius: 7px; padding: 5px 7px; background: transparent; min-width: 0; width: 100%; }
.srow input.name:hover { border-color: var(--line); }
.srow input.name:focus { border-color: var(--accent); background: #fff; outline: none; }
.pill-toggle { display: inline-flex; align-items: center; gap: 4px; border: 1px solid var(--line-2); border-radius: 99px; padding: 3px 9px; font-size: 12px; font-weight: 600; color: var(--ink-3); background: #fff; user-select: none; }
.pill-toggle.on { background: #FFF5D6; border-color: #E8C35A; color: #8A6510; }
.lockinfo { font-size: 12px; color: var(--ink-3); display: inline-flex; align-items: center; gap: 4px; }
.lockinfo.on { color: var(--accent); font-weight: 600; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip { border: 1px solid var(--line-2); background: #fff; border-radius: 99px; padding: 5px 11px; font-size: 13px; font-weight: 500; user-select: none; }
.chip.sel { background: var(--accent); border-color: var(--accent); color: #fff; }
.chip.front::after { content: " ★"; color: #D9A21B; }
.chip.sel.front::after { color: #FFE08A; }
.rule-chip { display: inline-flex; align-items: center; gap: 6px; border-radius: 99px; padding: 5px 6px 5px 12px; font-size: 13px; font-weight: 600; }
.rule-chip.apart { background: var(--danger-soft); color: #9B2C3B; }
.rule-chip.together { background: var(--ok-soft); color: #22643F; }
.rule-chip .x { font-weight: 700; opacity: .7; }
.rule-chip button { border: 0; width: 22px; height: 22px; border-radius: 50%; background: rgba(0,0,0,.08); display: grid; place-items: center; font-size: 13px; line-height: 1; padding: 0; color: inherit; }
.rule-chip button:hover { background: rgba(0,0,0,.18); }
.rule-chip.bad { outline: 2px solid var(--danger); outline-offset: 1px; }
.empty { padding: 18px; text-align: center; color: var(--ink-3); font-size: 13px; }

/* ---------- classes home ---------- */
#view-classes.active { grid-template-columns: 1fr; }
.home { max-width: 1100px; margin: 0 auto; display: flex; flex-direction: column; gap: 18px; padding-block: 12px; }
.home h1 { font: 700 26px/1.2 Poppins, Figtree, sans-serif; margin: 0; }
.class-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(270px, 1fr)); gap: 14px; }
.class-card { background: var(--panel); border-radius: var(--radius); box-shadow: var(--shadow); padding: 16px; display: flex; flex-direction: column; gap: 14px; cursor: pointer; border: 1px solid transparent; text-align: left; }
.class-card:hover { border-color: var(--line-2); }
.class-card:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.class-card.new { align-items: center; justify-content: center; flex-direction: row; gap: 8px; box-shadow: none; border: 1.5px dashed var(--line-2); background: transparent; color: var(--ink-2); font-weight: 600; min-height: 120px; }
.class-card.new:hover { border-color: var(--accent); color: var(--accent); }
.cc-plus { font-size: 20px; }
.cc-top { display: flex; gap: 12px; align-items: center; }
.cc-text { min-width: 0; }
.cc-text h3 { margin: 0 0 2px; font-family: Poppins, Figtree, sans-serif; font-size: 17px; overflow-wrap: anywhere; }
.cc-badge { width: 46px; height: 46px; border-radius: 12px; display: grid; place-items: center; font: 700 13px Poppins, Figtree, sans-serif; color: var(--ink); flex-shrink: 0; }
.cc-actions { display: flex; gap: 6px; flex-wrap: wrap; }
.chip.absent { opacity: .5; text-decoration: line-through; }

/* ---------- groups ---------- */
.group-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 14px; max-width: 1280px; align-items: start; }
.gcard { background: var(--panel); border-radius: var(--radius); box-shadow: var(--shadow); padding: 14px; display: flex; flex-direction: column; gap: 10px; }
.gcard-head { display: flex; align-items: center; gap: 8px; }
.gcard-head .grow { flex: 1; font-size: 15px; }
.gnum { width: 26px; height: 26px; border-radius: 50%; display: grid; place-items: center; font-weight: 700; font-size: 13px; }
.gnames { display: flex; flex-direction: column; gap: 6px; }
.gname { text-align: left; padding: 7px 10px; border-radius: 8px; background: var(--bg); border: 1.5px solid transparent; font-weight: 500; font-size: 15px; }
.gname:hover { border-color: var(--line-2); }
.gname.sel { border-color: var(--accent); background: var(--accent-soft); }
.gname.bad { border-color: var(--danger); background: var(--danger-soft); }
.gname.absent { opacity: .45; text-decoration: line-through; }

/* ---------- random picker ---------- */
.picker-stage { display: grid; place-items: center; }
.pick-card { background: var(--panel); border-radius: 24px; box-shadow: var(--shadow); padding: 48px 32px; width: min(760px, 100%); display: flex; flex-direction: column; align-items: center; gap: 18px; text-align: center; }
.pick-label { font-size: 13px; letter-spacing: .08em; text-transform: uppercase; color: var(--ink-3); font-weight: 600; }
.pick-name { font: 700 clamp(40px, 7vw, 84px)/1.08 Poppins, Figtree, sans-serif; overflow-wrap: anywhere; min-height: 1.1em; }
.pick-name.rolling { color: var(--ink-3); }
.pick-btn { font-size: 18px; padding: 14px 30px; min-height: 54px; border-radius: 14px; }
.pk-hist { margin: 0; padding-left: 22px; display: flex; flex-direction: column; gap: 3px; }
.pk-hist .none { list-style: none; margin-left: -22px; }

/* ---------- plan ---------- */
.plan-stage { overflow: auto; padding: 22px; display: flex; justify-content: center; align-items: flex-start; min-width: 0; }
.page {
  width: min(100%, 1188px); aspect-ratio: 1188 / 840; background: #fff; box-shadow: 0 2px 6px rgba(20,24,40,.08), 0 14px 40px rgba(20,24,40,.10);
  border-radius: 6px; overflow: hidden; flex-shrink: 0;
}
.page svg { width: 100%; height: 100%; display: block; touch-action: none; user-select: none; -webkit-user-select: none; }
.page svg [data-seat] { cursor: grab; }
.msg { border-radius: 10px; padding: 10px 12px; font-size: 13px; display: flex; flex-direction: column; gap: 6px; }
.msg.ok { background: var(--ok-soft); color: #22643F; }
.msg.warn { background: var(--warn-soft); color: #7A5214; }
.msg.error { background: var(--danger-soft); color: #8E2433; }
.msg ul { margin: 0; padding-left: 18px; }
.swatches { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; }
.swatch { border: 1px solid var(--line-2); border-radius: 10px; padding: 7px; background: #fff; display: flex; flex-direction: column; gap: 5px; font-size: 12px; font-weight: 600; text-align: left; }
.swatch.on { border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent-soft); }
.swatch .dots { display: flex; gap: 3px; }
.swatch .dots i { width: 14px; height: 14px; border-radius: 4px; display: block; }
.tray { display: flex; flex-wrap: wrap; gap: 6px; min-height: 40px; padding: 8px; border: 1.5px dashed var(--line-2); border-radius: 10px; }
.tray .chip { cursor: grab; touch-action: none; }
.tray.drop { border-color: var(--accent); background: var(--accent-soft); }
.selcard { background: var(--accent-soft); border-radius: 10px; padding: 10px; display: flex; flex-direction: column; gap: 8px; }

/* ---------- modal + toast ---------- */
.modal-bg { position: fixed; inset: 0; background: rgba(20,24,40,.35); display: grid; place-items: center; z-index: 900; padding: 16px; }
.modal { background: #fff; border-radius: 16px; padding: 20px; width: min(460px, 100%); box-shadow: 0 20px 60px rgba(0,0,0,.25); display: flex; flex-direction: column; gap: 12px; }
.modal p { margin: 0; color: var(--ink-2); }
.modal .btn-row { justify-content: flex-end; }
.toast { position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%); background: var(--ink); color: #fff; padding: 9px 16px; border-radius: 10px; z-index: 1000; font-weight: 500; box-shadow: 0 8px 24px rgba(0,0,0,.2); max-width: 90vw; }

#printArea { display: none; }

@media (max-width: 1100px) {
  .tab .lbl-long { display: none; }
  .privacy { display: none; }
}
@media (max-width: 900px) {
  body { overflow: auto; }
  .app { height: auto; min-height: 100vh; }
  .view.active { grid-template-columns: 1fr; }
  .sidebar { border-right: 0; border-bottom: 1px solid var(--line); max-height: none; }
  .stage { height: 75vh; }
  .cols { grid-template-columns: 1fr; }
  .topbar { flex-wrap: wrap; }
  .tabs { order: 3; width: 100%; justify-content: center; }
}

/* ---------- print: A4 landscape, one page ---------- */
@page { size: A4 landscape; margin: 0; }
@media print {
  html, body { height: auto; overflow: visible; background: #fff; }
  .app, .modal-bg, .toast, .drag-ghost { display: none !important; }
  #printArea { display: block; width: 297mm; height: 209mm; overflow: hidden; }
  #printArea svg { width: 297mm; height: 209mm; display: block; }
  * { -webkit-print-color-adjust: exact; print-color-adjust: exact; }
}

/* =====================================================================
   THEME: classroom-style shell (top bar, nav rail, class cards) with
   bold geometric type, pill buttons and leaderboard-style name rows.
===================================================================== */
:root {
  --bg: #ffffff; --panel: #ffffff;
  --ink: #0f1a2e; --ink-2: #57607a; --ink-3: #868ea3;
  --line: #e4e4e7; --line-2: #d0d0d5;
  --accent: #1a73e8; --accent-soft: #e8f0fe; --accent-ink: #0b57d0;
  --win: #d6f5de; --win-ink: #146c2e;
  --danger: #d93025; --danger-soft: #fce8e6;
  --ok: #188038; --ok-soft: #e6f4ea;
  --radius: 16px;
  --shadow: 0 1px 2px rgba(10,28,63,.10), 0 2px 8px rgba(10,28,63,.07);
  --font: "Figtree", "Segoe UI", system-ui, -apple-system, sans-serif;
}
body { font: 15px/1.5 var(--font); }
kbd { font-family: var(--font); }
h2 { font: 700 12px/1.3 var(--font); letter-spacing: .08em; color: var(--ink-2); }
h3 { font-weight: 700; }
.ico { width: 24px; height: 24px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; flex-shrink: 0; }
.ico.fill { fill: currentColor; stroke: none; }

/* ---- top bar ---- */
.topbar { height: 64px; padding: 0 12px 0 8px; gap: 4px; }
.icon-btn { width: 44px; height: 44px; border-radius: 50%; border: 0; background: transparent; display: grid; place-items: center; color: var(--ink-2); flex-shrink: 0; }
.icon-btn:hover { background: #eef1f7; color: var(--ink); }
.icon-btn:disabled { opacity: .35; background: transparent; cursor: default; }
.icon-btn.create { width: 48px; height: 48px; color: var(--ink); }
.icon-btn.create .ico { width: 28px; height: 28px; }
.brand { gap: 10px; padding: 6px 8px; border-radius: 10px; font: 400 22px/1 var(--font); color: var(--ink-2); letter-spacing: -.01em; }
.brand:hover { color: var(--ink); }
.brand .logo { width: 34px; height: 34px; background: none; border-radius: 0; display: block; }
.brand .logo svg { width: 34px; height: 34px; display: block; }
.crumb-sep { color: var(--ink-3); font-size: 22px; line-height: 1; }
.crumb-class { display: flex; align-items: center; gap: 8px; min-width: 0; }
.crumb-name { font: 600 18px/1.2 var(--font); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 26vw; }
.tabs { align-self: stretch; background: none; padding: 0; border-radius: 0; gap: 0; }
.tab { border-radius: 0; padding: 0 16px; height: 100%; position: relative; font-weight: 600; font-size: 15px; color: var(--ink-2); box-shadow: none; }
.tab:hover { background: #f6f7f8; color: var(--ink); }
.tab.active { background: none; box-shadow: none; color: var(--ink); }
.tab.active::after { content: ""; position: absolute; left: 12px; right: 12px; bottom: 0; height: 4px; border-radius: 4px 4px 0 0; background: var(--ink); }
.top-actions { gap: 2px; }

/* ---- nav rail ---- */
.shell { display: grid; grid-template-columns: auto minmax(0, 1fr); min-height: 0; }
.views { display: grid; min-height: 0; min-width: 0; }
.rail { width: 72px; border-right: 1px solid var(--line); padding: 8px 0; display: flex; flex-direction: column; gap: 2px; overflow-y: auto; overflow-x: hidden; background: var(--panel); transition: width .18s ease; }
.rail.open { width: 280px; }
.rail-item { display: flex; align-items: center; gap: 18px; border: 0; background: none; color: var(--ink); height: 48px; padding: 0 24px; margin-right: 12px; border-radius: 0 999px 999px 0; text-align: left; font-weight: 500; white-space: nowrap; min-width: 0; flex-shrink: 0; }
.rail-item:hover { background: #eef1f7; }
.rail-item .ico { color: var(--ink-2); }
.rail-item.active { background: var(--accent-soft); color: var(--accent-ink); font-weight: 600; }
.rail-item.active .ico { color: var(--accent-ink); }
.rail-item[data-open] { padding-left: 20px; gap: 14px; }
.rail-item[data-open] .ico { color: inherit; }
.rail-item .lbl { overflow: hidden; text-overflow: ellipsis; }
#railClasses { display: flex; flex-direction: column; gap: 2px; }
.rail.open .rail-item { width: calc(100% - 12px); }
.rail:not(.open) .rail-item { padding: 0; margin: 0 12px; width: 48px; justify-content: center; border-radius: 50%; }
.rail:not(.open) .lbl { display: none; }
.rail-sep { height: 1px; background: var(--line); margin: 8px 0; flex-shrink: 0; }
.rail-head { padding: 8px 24px 4px; font-size: 13px; font-weight: 600; color: var(--ink-2); }
#guideRail { margin-top: auto; }
#guideRail:not([hidden]) + .privacy { margin-top: 4px; }
.rail .privacy { display: block; margin: auto 16px 8px; border-radius: 12px; white-space: normal; padding: 8px 12px; }
.mini-ico { width: 32px; height: 32px; border-radius: 50%; display: grid; place-items: center; color: #fff; flex-shrink: 0; }
.mini-ico .ico { width: 18px; height: 18px; stroke-width: 2; color: inherit; }
.mini-ico.lg { width: 40px; height: 40px; }
.mini-ico.lg .ico { width: 22px; height: 22px; }
.scrim { display: none; }

/* ---- controls ---- */
.btn { border: 1.5px solid var(--line-2); border-radius: 999px; padding: 8px 16px; font-weight: 600; min-height: 40px; background: #fff; }
.btn:hover { background: #f6f7f8; border-color: #b9b9c0; }
.btn.primary { background: #111; border-color: #111; color: #fff; }
.btn.primary:hover { background: #333; border-color: #333; }
.btn.sm { padding: 5px 12px; min-height: 32px; font-size: 13px; }
.btn.icon { border-radius: 50%; padding: 0; width: 40px; }
.btn.ghost { border-color: transparent; }
.btn.on { background: var(--accent-soft); border-color: var(--accent); color: var(--accent-ink); }
.seg { border-radius: 999px; border-width: 1.5px; }
.seg button { font-weight: 600; }
.seg button.on { background: #111; color: #fff; }
.input, select.input, textarea.input { border-radius: 12px; border-width: 1.5px; }
.card { border: 2px solid var(--line); box-shadow: none; border-radius: 24px; padding: 20px; }
.chip { border-width: 1.5px; font-weight: 600; }
.chip.sel { background: #111; border-color: #111; }
.msg { border-radius: 14px; }
.modal { border-radius: 24px; padding: 24px; }
.modal h3 { font: 800 22px/1.2 var(--font); letter-spacing: -.01em; }
.toast { border-radius: 999px; padding: 10px 20px; background: #111; }

/* ---- pop-up menus ---- */
.menu { position: fixed; z-index: 950; background: #fff; border-radius: 8px; box-shadow: 0 2px 6px 2px rgba(10,28,63,.13), 0 1px 2px rgba(10,28,63,.25); padding: 8px 0; min-width: 200px; display: flex; flex-direction: column; }
.menu button { border: 0; background: none; text-align: left; padding: 12px 24px; font-size: 16px; color: var(--ink); }
.menu button:hover, .menu button:focus-visible { background: #eef1f7; outline: none; }
.menu button.danger { color: var(--danger); }

/* ---- classes home ---- */
.home { max-width: 1240px; margin: 0; padding: 24px 8px; gap: 20px; }
.home h1 { font: 800 32px/1.15 var(--font); letter-spacing: -.02em; }
.class-grid { grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 24px; }
/* class cards: notes pinned to a board, in a light wash of the class colour */
.class-grid { gap: 28px 24px; padding: 6px 4px 12px; }
.class-card { position: relative; padding: 34px 22px 22px; gap: 10px; min-height: 196px; border: 0; border-radius: 4px 4px 4px 28px; background: color-mix(in srgb, var(--c) 22%, #fffdf6); box-shadow: 0 1px 1px rgba(10,28,63,.08), 0 12px 22px -10px rgba(10,28,63,.32); transform: rotate(var(--tilt, 0deg)); transition: transform .15s ease, box-shadow .15s ease; }
.class-card:hover, .class-card:focus-visible { border: 0; transform: rotate(0deg) translateY(-3px); box-shadow: 0 1px 1px rgba(10,28,63,.08), 0 18px 30px -12px rgba(10,28,63,.38); }
.class-card:focus-visible { outline: 3px solid var(--brand-navy, #0a1c3f); outline-offset: 4px; }
.cc-pin { position: absolute; top: 11px; left: 50%; width: 18px; height: 18px; margin-left: -9px; border-radius: 50%; background: var(--c); box-shadow: inset -2px -3px 0 rgba(0,0,0,.25), 0 2px 3px rgba(0,0,0,.25); }
.cc-icon { color: var(--fg); }
.cc-icon .ico { width: 34px; height: 34px; stroke-width: 2; }
.cc-text { margin-top: auto; min-width: 0; }
.cc-title { margin: 0; font: 800 23px/1.2 var(--font); letter-spacing: -.01em; color: var(--brand-navy, #0a1c3f); overflow-wrap: anywhere; }
.cc-sub { font-size: 14px; color: #48526b; margin-top: 4px; }
.cc-menu { position: absolute; top: 10px; right: 8px; width: 40px; height: 40px; border-radius: 12px; border: 0; background: none; color: var(--brand-navy, #0a1c3f); display: grid; place-items: center; opacity: .75; }
.cc-menu:hover, .cc-menu:focus-visible { opacity: 1; background: rgba(10,28,63,.08); outline: none; }
@media (prefers-reduced-motion: reduce) { .class-card { transition: none; } .class-card:hover, .class-card:focus-visible { transform: rotate(var(--tilt, 0deg)); } }

/* ---- icon picker ---- */
.modal.wide { width: min(760px, 100%); max-height: 86vh; overflow: auto; }
.ico-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(100px, 1fr)); gap: 6px; }
.ico-cell { border: 2px solid transparent; background: none; border-radius: 16px; padding: 10px 6px; display: flex; flex-direction: column; align-items: center; gap: 6px; font-size: 12px; font-weight: 600; color: var(--ink-2); text-align: center; line-height: 1.25; }
.ico-cell:hover { background: #f4f4f5; color: var(--ink); }
.ico-cell.on { border-color: #111; color: var(--ink); }
.ico-chip { width: 48px; height: 48px; border-radius: 50%; display: grid; place-items: center; color: #fff; }

/* ---- avatars + leaderboard rows ---- */
.av { width: 32px; height: 32px; border-radius: 50%; display: inline-grid; place-items: center; color: #fff; font-weight: 700; font-size: 14px; flex-shrink: 0; }
.board { display: flex; flex-direction: column; gap: 2px; }
.lb-row { display: flex; align-items: center; gap: 12px; padding: 7px 10px; border-radius: 14px; font-weight: 500; }
.lb-row.me { background: var(--win); font-weight: 700; }
.lb-rank { width: 26px; height: 26px; display: grid; place-items: center; font-weight: 700; font-size: 13px; color: var(--ok); border-radius: 8px; flex-shrink: 0; }
.lb-rank.r1 { background: #fde9b8; color: #7a5300; }
.lb-rank.r2 { background: #e3e5e8; color: #3c4043; }
.lb-rank.r3 { background: #f8cfa8; color: #7a3e00; }
.lb-name { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.srow-name { display: flex; align-items: center; gap: 8px; min-width: 0; }
.srow .av { width: 28px; height: 28px; font-size: 12px; }

/* ---- groups ---- */
.group-grid { gap: 20px; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }
.gcard { border: 2px solid var(--line); box-shadow: none; border-radius: 24px; padding: 18px; gap: 12px; }
.gcard-head .grow { font: 800 18px/1.2 var(--font); }
.gnum { width: 30px; height: 30px; border-radius: 9px; font-weight: 800; }
.gnames { gap: 2px; }
.gname { display: flex; align-items: center; gap: 12px; padding: 7px 10px; border-radius: 14px; background: none; border: 1.5px solid transparent; font-size: 16px; }
.gname:hover { background: #f4f4f5; border-color: transparent; }
.gname.sel { background: var(--win); font-weight: 700; }
.gname.bad { background: var(--danger-soft); border-color: transparent; }

/* ---- random picker ---- */
.picker-stage { place-items: start center; }
.pk-wrap { width: min(720px, 100%); display: flex; flex-direction: column; align-items: center; text-align: center; gap: 12px; padding: 28px 8px; }
.pk-hex { width: 104px; height: 104px; display: grid; place-items: center; color: #fff; background: var(--c); clip-path: polygon(30% 0, 70% 0, 100% 30%, 100% 70%, 70% 100%, 30% 100%, 0 70%, 0 30%); box-shadow: inset 0 -9px 0 rgba(0,0,0,.25); }
.pk-hex .ico { width: 52px; height: 52px; stroke-width: 2; }
.pk-title { font: 800 clamp(28px, 4vw, 40px)/1.15 var(--font); letter-spacing: -.02em; margin: 6px 0 0; overflow-wrap: anywhere; }
.pk-sub { margin: 0; color: var(--ink-2); font-size: 17px; }
.reel { position: relative; width: 100%; height: 360px; overflow: hidden; -webkit-mask-image: linear-gradient(transparent, #000 26%, #000 74%, transparent); mask-image: linear-gradient(transparent, #000 26%, #000 74%, transparent); }
.reel-frame { position: absolute; left: 0; right: 0; top: calc(50% - 36px); height: 72px; border-radius: 20px; background: #f4f4f5; box-shadow: 0 10px 30px rgba(0,0,0,.10); opacity: 0; transition: opacity .2s; }
.reel.spinning .reel-frame { opacity: 1; }
.reel-track { position: relative; will-change: transform; }
.reel-row { height: 72px; display: flex; align-items: center; gap: 18px; padding: 0 28px; border-radius: 20px; font-size: 20px; font-weight: 500; text-align: left; }
.reel-row .av { width: 48px; height: 48px; font-size: 20px; }
.reel-row.won { background: var(--win); font-weight: 700; animation: pop .45s ease; }
.rr-name { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.rr-tag { font-size: 15px; font-weight: 700; color: var(--win-ink); }
@keyframes pop { 0% { transform: scale(.96); } 60% { transform: scale(1.03); } 100% { transform: scale(1); } }
.pk-actions { display: flex; gap: 12px; flex-wrap: wrap; justify-content: center; width: 100%; margin-top: 6px; }
.pill-xl { min-height: 56px; padding: 0 40px; font-size: 18px; font-weight: 700; min-width: 240px; }
.outline-pill { min-height: 56px; padding: 0 28px; font-size: 16px; font-weight: 700; border-width: 2px; }
@media (prefers-reduced-motion: reduce) { .reel-row.won { animation: none; } .rail { transition: none; } }

@media (max-width: 900px) {
  .app { grid-template-rows: auto 1fr; }
  .topbar { height: auto; flex-wrap: wrap; padding: 6px 8px 0; }
  .brand { font-size: 20px; }
  .tabs { order: 3; width: 100%; min-width: 0; height: 48px; overflow-x: auto; overflow-y: hidden; justify-content: flex-start; scrollbar-width: none; }
  .tabs .tab { flex: none; }
  .shell { grid-template-columns: minmax(0, 1fr); }
  .rail { position: fixed; top: 0; bottom: 0; left: 0; z-index: 860; width: 280px; transform: translateX(-100%); transition: transform .2s ease; box-shadow: 0 8px 30px rgba(0,0,0,.2); padding-top: max(8px, env(safe-area-inset-top, 0px)); }
  .rail.open { transform: none; }
  body.rail-open .scrim { display: block; position: fixed; inset: 0; background: rgba(0,0,0,.32); z-index: 850; }
  .crumb-name { max-width: 40vw; }
  .reel { height: 288px; }
  .pill-xl, .outline-pill { width: 100%; min-width: 0; }
}

/* ---- ClassCrate brand: navy + teal wordmark from the crate logo. The highlight colour is the logo teal
   deepened just enough to pass 4.5:1 as text on white. ---- */
:root { --brand-navy: #0a1c3f; --brand-teal: #1f9488; --accent: #178276; --accent-soft: #e2f3f0; --accent-ink: #13766b; --ink: #0f1a2e; }
.brand { gap: 10px; color: var(--brand-navy); }
.brand .logo, .brand .logo svg { width: 46px; height: 42px; }
.brand-name { font: 800 23px/1 var(--font); letter-spacing: -.02em; color: var(--brand-navy); }
.brand-name .crate { color: var(--brand-teal); }
.brand:hover .brand-name { color: var(--brand-navy); }
.btn.primary { background: var(--brand-navy); border-color: var(--brand-navy); }
.btn.primary:hover { background: #16305f; border-color: #16305f; }
.seg button.on, .chip.sel { background: var(--brand-navy); border-color: var(--brand-navy); }
.tab.active::after { background: var(--brand-teal); }
.ico-cell.on { border-color: var(--brand-navy); }
.toast { background: var(--brand-navy); }
@media (max-width: 900px) { .brand-name { font-size: 21px; } }
.swatch-row { display: flex; gap: 10px; flex-wrap: wrap; }
.seat-sw { width: 38px; height: 38px; border-radius: 11px; border: 3px solid #fff; box-shadow: 0 0 0 1.5px var(--line-2); padding: 0; }
.seat-sw:hover { transform: translateY(-1px); }
.seat-sw.on { box-shadow: 0 0 0 3px var(--brand-navy, #0a1c3f); }
.nc-preview { display: flex; align-items: center; gap: 12px; padding: 12px; border-radius: 16px; background: #f6f7f9; }
.nc-preview > span:last-child { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.nc-preview b { font-size: 16px; overflow-wrap: anywhere; }

/* ---- saved group sets + recent groupings ---- */
.saved-list { display: flex; flex-direction: column; }
.set-row { display: flex; align-items: center; gap: 8px; padding: 8px 0; border-top: 1px solid var(--line); }
.set-row:first-child { border-top: 0; }
.set-row .grow { flex: 1; min-width: 0; }
.set-row b { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ---- home learning ---- */
#view-homework .content { display: flex; flex-direction: column; gap: 12px; }
.hl-legend { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; font-size: 13px; color: var(--ink-2); }
.hl-legend span { display: inline-flex; align-items: center; gap: 6px; }
.hl-legend .hl-cell { width: 24px; height: 24px; font-size: 12px; cursor: default; }
.hl-scroll { overflow: auto; border: 2px solid var(--line); border-radius: 20px; background: #fff; max-width: 100%; }
.hl-table { border-collapse: separate; border-spacing: 0; font-size: 14px; }
.hl-table th, .hl-table td { padding: 6px 8px; border-bottom: 1px solid var(--line); text-align: center; white-space: nowrap; }
.hl-table tbody tr:last-child th, .hl-table tbody tr:last-child td { border-bottom: 0; }
.hl-table thead th { position: sticky; top: 0; background: #fff; z-index: 3; vertical-align: bottom; box-shadow: inset 0 -1px 0 var(--line); }
.hl-table .hl-name { position: sticky; left: 0; background: #fff; text-align: left; z-index: 2; font-weight: 500; }
.hl-table thead .hl-name { z-index: 4; font-weight: 700; color: var(--ink-2); font-size: 12px; text-transform: uppercase; letter-spacing: .06em; }
.hl-name { min-width: 200px; }
.hl-table tbody th.hl-name > * { vertical-align: middle; }
.hl-table tbody th.hl-name .av { width: 28px; height: 28px; font-size: 12px; margin-right: 10px; }
.hl-head { border: 0; background: none; display: flex; flex-direction: column; align-items: center; gap: 2px; padding: 4px 6px; border-radius: 12px; max-width: 140px; }
.hl-head:hover { background: #f4f4f5; }
.hl-head b { font-size: 13px; overflow: hidden; text-overflow: ellipsis; max-width: 128px; }
.hl-head span { font-size: 12px; color: var(--ink-2); font-weight: 500; }
.hl-head .hl-count { color: var(--ink); font-weight: 700; }
.hl-cell { width: 34px; height: 34px; border-radius: 10px; border: 1.5px solid var(--line-2); background: #fff; display: inline-grid; place-items: center; font-weight: 800; font-size: 15px; padding: 0; color: var(--ink); font-style: normal; }
.hl-cell:hover { border-color: var(--ink-3); }
.hl-done { background: var(--win); border-color: #86d39b; color: var(--win-ink); }
.hl-late { background: #fff1d6; border-color: #f0c36b; color: #8a5a00; }
.hl-excused { background: #eef0f3; border-color: #d3d6dc; color: var(--ink-2); }
.hl-missing { background: var(--danger-soft); border-color: #f2a39b; color: var(--danger); }
.hl-rate { font-weight: 700; font-variant-numeric: tabular-nums; min-width: 92px; }
.hl-rate.low { color: var(--danger); }
.hl-bar { display: block; height: 5px; border-radius: 3px; background: var(--line); margin-top: 4px; overflow: hidden; }
.hl-bar i { display: block; height: 100%; background: var(--ok); }
.hl-rate.low .hl-bar i { background: var(--danger); }
.hl-miss-text { color: var(--danger); font-weight: 600; }
.csv-preview { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; max-height: 180px; overflow: auto; }

/* ---- timer and noise meter: one tool per page, no sidebar ---- */
.view.solo.active { grid-template-columns: minmax(0, 1fr); }
.tool-page { display: grid; justify-items: center; align-content: start; }
.tool-card { width: min(980px, 100%); border: 2px solid var(--line); border-radius: 28px; padding: 24px 28px 28px; display: flex; flex-direction: column; gap: 22px; background: #fff; transition: border-color .2s, box-shadow .2s; }
.tool-head { display: flex; align-items: center; gap: 12px; }
.tool-title { margin: 0; flex: 1; font: 800 28px/1.15 var(--font); letter-spacing: -.02em; }
.tool-state { font-size: 16px; font-weight: 700; color: var(--ink-2); font-variant-numeric: tabular-nums; }
.timer-page { width: min(720px, 100%); align-items: center; }
.timer-page .tool-head { align-self: stretch; }
.timer-face { position: relative; width: min(440px, 100%, calc(100vh - 380px)); min-width: 220px; aspect-ratio: 1; }
.timer-face svg { width: 100%; height: 100%; transform: rotate(-90deg); }
.tm-track { fill: none; stroke: var(--line); stroke-width: 7; }
.tm-ring { fill: none; stroke-width: 7; stroke-linecap: round; transition: stroke-dashoffset .25s linear; }
.timer-digits { position: absolute; inset: 0; display: grid; place-items: center; font: 800 clamp(56px, 9vw, 104px)/1 var(--font); font-variant-numeric: tabular-nums; letter-spacing: -.03em; }
.timer-presets { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; }
.timer-controls { flex-wrap: nowrap; align-items: center; gap: 10px; }
.timer-controls #tmStart { min-width: 200px; }
.tool-foot { display: flex; flex-wrap: wrap; gap: 8px 20px; align-items: center; justify-content: center; text-align: center; }
.tool-card.done { border-color: var(--danger); box-shadow: 0 0 0 4px var(--danger-soft); }
.tool-card.done .timer-digits { color: var(--danger); animation: tm-pulse 1s ease-in-out infinite; }
@keyframes tm-pulse { 50% { opacity: .4; } }
.timer-chip { border: 0; border-radius: 999px; padding: 8px 14px; background: var(--brand-navy, #0a1c3f); color: #fff; font: 700 14px var(--font); font-variant-numeric: tabular-nums; white-space: nowrap; }
.timer-chip.done { background: var(--danger); }
.pit-wrap { position: relative; }
#ballPit { display: block; width: 100%; height: clamp(280px, calc(100vh - 400px), 560px); border-radius: 20px; background: #f6f7f9; }
.noise-controls { display: grid; grid-template-columns: 1fr 1fr auto; gap: 16px 28px; align-items: end; }
.noise-controls #nmToggle { min-width: 200px; }
@media (max-width: 760px) { .noise-controls { grid-template-columns: 1fr; } .tool-card { padding: 18px; } .timer-controls { flex-wrap: wrap; justify-content: center; } .timer-controls #tmStart, .noise-controls #nmToggle { min-width: 0; } .timer-face { min-width: 0; width: min(100%, 360px); } }
.pit-banner { position: absolute; top: 16px; left: 50%; transform: translateX(-50%); background: var(--danger); color: #fff; font: 800 26px var(--font); padding: 8px 22px; border-radius: 999px; box-shadow: 0 6px 20px rgba(250,62,66,.35); }
.tool-card.loud { border-color: var(--danger); }
input[type=range] { accent-color: var(--brand-navy, #0a1c3f); width: 100%; }
@media (prefers-reduced-motion: reduce) { .tool-card.done .timer-digits { animation: none; } }

/* ================= display mode (projector) ================= */
body.present .rail, body.present .scrim, body.present .view .sidebar,
body.present #railToggle, body.present #undoBtn, body.present #redoBtn, body.present #createBtn, body.present #presentBtn { display: none !important; }
body.present .shell { grid-template-columns: minmax(0, 1fr); }
body.present .view.active { grid-template-columns: minmax(0, 1fr); }
body.present .topbar { min-height: 72px; }
body.present .brand { font-size: 24px; }
body.present .crumb { font-size: 20px; }
body.present .tab { font-size: 18px; padding-block: 16px; }
body.present .content { padding: 24px 32px 80px; }
body.present .pk-title { font-size: clamp(40px, 5vw, 64px); }
body.present .pk-sub { font-size: 22px; }
body.present .pk-hex { width: 128px; height: 128px; }
body.present .reel-row { font-size: 30px; font-weight: 600; }
body.present .reel-row .av { width: 56px; height: 56px; font-size: 24px; }
body.present .timer-face { width: min(560px, 100%, calc(100vh - 420px)); min-width: 240px; }
body.present .timer-digits { font-size: clamp(72px, 11vw, 140px); }
body.present #ballPit { height: clamp(300px, calc(100vh - 380px), 720px); }
body.present .tool-card { width: min(1200px, 100%); }
body.present .tool-title { font-size: 34px; }
body.present .group-grid { grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); max-width: none; gap: 20px; }
body.present .gcard { padding: 20px; }
body.present .gcard-head .grow { font-size: 26px; }
body.present .gnum { width: 40px; height: 40px; font-size: 20px; }
body.present .gname { font-size: 24px; padding: 10px 14px; }
body.present .gname .av { width: 40px; height: 40px; font-size: 18px; }
body.present .tab[data-tab="students"], body.present .tab[data-tab="homework"] { display: none; }
body.present .gname.bad { background: var(--bg); border-color: transparent; }
.present-exit { position: fixed; right: 20px; bottom: 20px; z-index: 800; border: 0; border-radius: 999px; padding: 10px 16px; background: var(--brand-navy); color: #fff; font: 600 14px/1 var(--font); box-shadow: 0 8px 24px rgba(0,0,0,.25); cursor: pointer; opacity: .55; transition: opacity .15s; }
.present-exit:hover, .present-exit:focus-visible { opacity: 1; }
.present-exit kbd { background: rgba(255,255,255,.15); color: #fff; border-color: transparent; margin-left: 6px; }
.present-exit[hidden] { display: none; }

/* ================= getting-started guide ================= */
.linklike { background: none; border: 0; padding: 0; color: var(--accent); font: inherit; font-weight: 600; cursor: pointer; text-decoration: underline; text-underline-offset: 3px; }
.linklike[hidden] { display: none; }
.guide-card { background: var(--panel); border-radius: var(--radius); box-shadow: var(--shadow); padding: 18px 20px; display: flex; flex-direction: column; gap: 12px; border-top: 4px solid var(--brand-teal); }
.guide-head { display: flex; align-items: center; gap: 12px; font-size: 17px; }
.guide-bar { height: 6px; border-radius: 99px; background: #eceef2; overflow: hidden; }
.guide-bar i { display: block; height: 100%; background: var(--brand-teal); border-radius: inherit; transition: width .3s ease; }
.guide-privacy { display: flex; gap: 10px; align-items: flex-start; background: var(--ok-soft); color: var(--ink); border-radius: 12px; padding: 10px 14px; font-size: 14px; line-height: 1.45; }
.guide-privacy b { color: var(--ok); }
.gp-ico { flex: none; font-size: 16px; line-height: 1.3; }
.guide-steps { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 6px; }
.guide-steps li { display: flex; align-items: center; gap: 14px; padding: 10px 12px; border-radius: 12px; }
.guide-steps li.next { background: #eef8f6; }
.guide-steps li.done b { color: var(--ink-2); text-decoration: line-through; text-decoration-thickness: 1px; }
.gs-num { flex: none; width: 30px; height: 30px; border-radius: 50%; display: grid; place-items: center; font-weight: 800; background: #eceef2; color: var(--ink-2); }
.guide-steps li.next .gs-num { background: var(--brand-teal); color: #fff; }
.guide-steps li.done .gs-num { background: #1e9e5a; color: #fff; }
@media (max-width: 640px) { .guide-steps li { flex-wrap: wrap; } .guide-steps li .btn { margin-left: 44px; } }
.spot { outline: 3px solid var(--brand-teal) !important; outline-offset: 3px; animation: spot-pulse 1.4s ease-in-out infinite; position: relative; z-index: 2; }
@keyframes spot-pulse { 0%, 100% { box-shadow: 0 0 0 0 rgba(31,148,136,.45); } 50% { box-shadow: 0 0 0 10px rgba(31,148,136,0); } }
.tour-tip { position: fixed; z-index: 1000; width: min(330px, calc(100vw - 16px)); background: var(--brand-navy); color: #fff; border-radius: 16px; padding: 12px 14px 12px 16px; box-shadow: 0 14px 36px rgba(10,28,63,.35); display: flex; flex-direction: column; gap: 8px; font-size: 14.5px; line-height: 1.45; }
.tour-tip p { margin: 0; }
.tt-head { display: flex; align-items: center; justify-content: space-between; }
.tt-count { font-size: 11px; font-weight: 800; letter-spacing: .07em; text-transform: uppercase; opacity: .7; }
.tt-x { border: 0; background: none; color: #fff; opacity: .7; font-size: 15px; width: 28px; height: 28px; border-radius: 8px; cursor: pointer; }
.tt-x:hover, .tt-x:focus-visible { opacity: 1; background: rgba(255,255,255,.12); }
.tt-btns { display: flex; align-items: center; gap: 8px; }
.tt-btns .grow { flex: 1; }
.tt-btns .hint { color: #fff; opacity: .7; font-size: 13px; }
.tour-tip .btn { background: rgba(255,255,255,.12); color: #fff; border-color: transparent; }
.tour-tip .btn.primary { background: #fff; color: var(--brand-navy); }
.guide-done { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.guide-done .grow { flex: 1; min-width: 200px; }
@media (prefers-reduced-motion: reduce) { .spot { animation: none; } .guide-bar i { transition: none; } }
.group-grid > .empty { grid-column: 1 / -1; display: flex; flex-direction: column; align-items: center; gap: 14px; padding: 40px 18px; font-size: 15px; }
body.present .group-grid > .empty { font-size: 20px; }

/* ---- demo class: a small grey label ---- */
.sample-tag { display: inline-block; font-size: 11px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--ink-3); background: rgba(10,28,63,.06); border-radius: 6px; padding: 2px 7px; margin-bottom: 6px; }
.crumb .sample-tag { margin: 0 0 0 8px; vertical-align: middle; }