/* DataQnA — read on a phone, in a dark room, one-handed. */

:root {
  color-scheme: light dark;
  --bg: #fbfbfd;
  --surface: #ffffff;
  --surface-2: #f2f3f7;
  --border: #e0e2ea;
  --text: #14161c;
  --muted: #626878;
  --accent: #3b5bdb;
  --accent-soft: #e7ebfb;
  --danger: #c92a2a;
  --ok: #2b8a3e;
  --radius: 12px;
  --shadow: 0 1px 2px rgba(16, 20, 32, .06), 0 4px 14px rgba(16, 20, 32, .05);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e1016;
    --surface: #171a22;
    --surface-2: #1f232d;
    --border: #2b303c;
    --text: #eef0f5;
    --muted: #9aa2b4;
    --accent: #748ffc;
    --accent-soft: #232a44;
    --danger: #ff8787;
    --ok: #69db7c;
    --shadow: 0 1px 2px rgba(0, 0, 0, .4), 0 4px 14px rgba(0, 0, 0, .3);
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  -webkit-text-size-adjust: 100%;
}

a { color: var(--accent); }

.wrap { max-width: 720px; margin: 0 auto; padding: 20px 16px 96px; }
.wide { max-width: 1100px; }

header.room { padding: 8px 0 16px; }
header.room h1 { font-size: 1.5rem; line-height: 1.25; margin: 0 0 6px; }
header.room p { margin: 0; color: var(--muted); }

.banner {
  margin: 12px 0;
  padding: 10px 14px;
  border-radius: var(--radius);
  background: var(--surface-2);
  color: var(--muted);
  font-size: .92rem;
}
.banner.warn { background: #fff4e6; color: #b3541e; }
@media (prefers-color-scheme: dark) { .banner.warn { background: #2e2415; color: #ffc078; } }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 14px;
  margin-bottom: 12px;
}

textarea, input[type=text], input[type=email], input[type=number], select {
  width: 100%;
  padding: 11px 12px;
  font: inherit;
  color: var(--text);
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 10px;
  outline: none;
}
textarea { resize: vertical; min-height: 84px; }
textarea:focus, input:focus, select:focus { border-color: var(--accent); }

.row { display: flex; gap: 8px; align-items: center; }
.row.wrapping { flex-wrap: wrap; }
.grow { flex: 1; min-width: 0; }
.right { margin-left: auto; }

button, .btn {
  font: inherit;
  font-weight: 550;
  padding: 10px 16px;
  border-radius: 10px;
  border: 1px solid transparent;
  background: var(--accent);
  color: #fff;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
}
button:disabled { opacity: .5; cursor: default; }
button.ghost, .btn.ghost {
  background: var(--surface);
  color: var(--text);
  border-color: var(--border);
}
button.small { padding: 6px 10px; font-size: .86rem; }
button.danger { background: var(--danger); }

.counter { font-size: .8rem; color: var(--muted); text-align: right; }

.tabs { display: flex; gap: 4px; margin: 18px 0 10px; }
.tabs button {
  background: transparent;
  color: var(--muted);
  border: none;
  padding: 8px 12px;
  border-radius: 8px;
  font-weight: 550;
}
.tabs button[aria-selected=true] { background: var(--accent-soft); color: var(--accent); }

ul.questions { list-style: none; margin: 0; padding: 0; }

li.q {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px;
  margin-bottom: 10px;
}
li.q.answered { opacity: .72; }
li.q.pinned { border-color: var(--accent); }
li.q .text { white-space: pre-wrap; overflow-wrap: anywhere; }
li.q .meta { margin-top: 6px; font-size: .82rem; color: var(--muted); }
li.q .tag {
  display: inline-block;
  margin-left: 6px;
  padding: 1px 7px;
  border-radius: 999px;
  background: var(--surface-2);
  font-size: .74rem;
}
li.q .tag.you { background: var(--accent-soft); color: var(--accent); }

.vote {
  flex: 0 0 auto;
  min-width: 52px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: 6px 4px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 10px;
  font-weight: 650;
}
.vote[aria-pressed=true] { background: var(--accent); border-color: var(--accent); color: #fff; }
.vote .arrow { font-size: .8rem; line-height: 1; }

.empty { text-align: center; color: var(--muted); padding: 36px 12px; }

.actions { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 10px; }

.share { display: flex; gap: 16px; align-items: center; flex-wrap: wrap; }
.share .qr { width: 132px; height: 132px; color: var(--text); }
.share code { font-size: 1.1rem; letter-spacing: .08em; }

table { width: 100%; border-collapse: collapse; font-size: .92rem; }
th, td { text-align: left; padding: 8px 6px; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 550; }

.toast {
  position: fixed;
  left: 50%;
  bottom: 22px;
  transform: translateX(-50%);
  background: var(--text);
  color: var(--bg);
  padding: 10px 16px;
  border-radius: 999px;
  font-size: .9rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity .18s;
}
.toast.show { opacity: 1; }

.muted { color: var(--muted); }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }
.stack > * + * { margin-top: 12px; }

/* Presentation mode: read from the back of the room. */
body.present { background: #05070d; color: #fff; overflow: hidden; }
.present-grid {
  display: grid;
  grid-template-columns: 1fr 340px;
  grid-template-rows: 1fr auto;
  height: 100vh;
  gap: 28px;
  padding: 36px 40px;
}
.present-main { display: flex; flex-direction: column; justify-content: center; min-width: 0; }
.present-main .q-text {
  font-size: clamp(2rem, 5vw, 4rem);
  font-weight: 640;
  line-height: 1.15;
  overflow-wrap: anywhere;
}
.present-main .q-meta { margin-top: 22px; font-size: 1.35rem; color: #98a2b8; }
.present-side { display: flex; flex-direction: column; gap: 16px; min-height: 0; }
.present-side h2 { font-size: .95rem; text-transform: uppercase; letter-spacing: .1em; color: #8892a6; margin: 0; }
.present-side ol { list-style: decimal inside; margin: 0; padding: 0; overflow-y: auto; }
.present-side li { padding: 9px 0; border-bottom: 1px solid #1c2130; color: #c9d1e0; font-size: 1.02rem; }
.present-join {
  display: flex; align-items: center; gap: 18px;
  background: #fff; color: #05070d; border-radius: 16px; padding: 16px 20px;
}
.present-join .qr { width: 108px; height: 108px; color: #05070d; }
.present-join .url { font-size: 1.15rem; font-weight: 650; }
.present-join .code { font-size: 1.9rem; font-weight: 750; letter-spacing: .1em; }
.present-foot { grid-column: 1 / -1; color: #6b7488; font-size: .9rem; }
.present-overlay {
  position: fixed; inset: 0; background: #fff; color: #05070d;
  display: none; flex-direction: column; align-items: center; justify-content: center; gap: 22px;
}
.present-overlay.show { display: flex; }
.present-overlay .qr { width: min(58vh, 58vw); height: min(58vh, 58vw); }
.present-overlay .url { font-size: clamp(1.4rem, 3.4vw, 2.6rem); font-weight: 700; }

@media (max-width: 900px) {
  .present-grid { grid-template-columns: 1fr; grid-template-rows: 1fr auto auto; }
  .present-side { display: none; }
}