/* 高認オリジナルクイズ Cloud — light theme, slide-style single-question layout. */
:root {
  --bg: #f4f6fb;
  --panel: #ffffff;
  --ink: #1f2430;
  --ink-soft: #5b6472;
  --line: #e3e8f0;
  --line-strong: #cdd5e2;
  --shadow: 0 10px 30px rgba(31, 41, 59, 0.08);
  --shadow-sm: 0 2px 8px rgba(31, 41, 59, 0.06);
  --radius: 16px;

  --accent: #3b5bdb;
  --correct: #15964f;
  --wrong: #e5484d;

  /* subject colors */
  --sub-kokugo: #ea580c;
  --sub-suugaku: #2563eb;
  --sub-eigo: #dc2626;
  --sub-rika: #16a34a;
  --sub-shakai: #eab308;
  --sub-shakai-ink: #4a3b00;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: "Hiragino Kaku Gothic ProN", "Yu Gothic", "Meiryo", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--accent); }
button { font-family: inherit; cursor: pointer; }
:focus-visible { outline: 3px solid rgba(59, 91, 219, 0.4); outline-offset: 2px; }

.wrap { max-width: 920px; margin: 0 auto; padding: 24px 18px 96px; }
.center-narrow { max-width: 560px; }

/* ---------- top bar ---------- */
.topbar {
  display: flex; align-items: center; gap: 12px;
  padding: 14px 18px; background: var(--panel);
  border-bottom: 1px solid var(--line); position: sticky; top: 0; z-index: 20;
}
.topbar .brand { font-weight: 800; letter-spacing: .02em; }
.topbar .brand small { display:block; font-weight: 600; color: var(--ink-soft); font-size: .72rem; letter-spacing: .12em; }
.topbar .spacer { flex: 1; }
.topbar .room-code { font-weight: 800; font-variant-numeric: tabular-nums; letter-spacing: .18em; background: var(--bg); padding: 6px 12px; border-radius: 10px; border:1px solid var(--line); }

/* ---------- cards / panels ---------- */
.card {
  background: var(--panel); border: 1px solid var(--line);
  border-radius: var(--radius); box-shadow: var(--shadow-sm); padding: 22px;
}
.card + .card { margin-top: 16px; }
h1 { font-size: 1.5rem; margin: 0 0 6px; }
h2 { font-size: 1.15rem; margin: 0 0 12px; }
.muted { color: var(--ink-soft); }
.small { font-size: .85rem; }

/* ---------- forms & buttons ---------- */
label.field { display:block; margin: 14px 0 6px; font-weight: 700; font-size: .92rem; }
input[type=text], select {
  width: 100%; padding: 12px 14px; font-size: 1rem;
  border: 1px solid var(--line-strong); border-radius: 12px; background: #fff; color: var(--ink);
}
input[type=text]:focus, select:focus { border-color: var(--accent); }
.btn {
  display:inline-flex; align-items:center; justify-content:center; gap: 8px;
  padding: 12px 18px; font-size: 1rem; font-weight: 800;
  border: 1px solid transparent; border-radius: 12px; background: var(--accent); color:#fff;
  transition: transform .05s ease, filter .15s ease;
}
.btn:hover { filter: brightness(1.05); }
.btn:active { transform: translateY(1px); }
.btn[disabled] { opacity: .5; cursor: not-allowed; }
.btn.ghost { background:#fff; color: var(--ink); border-color: var(--line-strong); }
.btn.soft { background: var(--bg); color: var(--ink); border-color: var(--line); }
.btn.wrong { background: var(--wrong); }
.btn.ok { background: var(--correct); }
.btn.block { width: 100%; }
.btn.lg { padding: 14px 22px; font-size: 1.05rem; }
.btn-row { display:flex; gap: 10px; flex-wrap: wrap; }

.checks { display:flex; flex-wrap: wrap; gap: 10px; margin-top: 8px; }
.checks label {
  display:inline-flex; align-items:center; gap:8px; padding: 8px 12px;
  border:1px solid var(--line-strong); border-radius: 999px; font-weight:700; cursor:pointer;
}
.checks input { accent-color: var(--accent); }

/* ---------- subject badge ---------- */
.badge {
  display:inline-flex; align-items:center; gap:6px; padding: 4px 12px; border-radius: 999px;
  font-weight: 800; font-size: .8rem; color:#fff; background: #888;
}
.s-国語 { background: var(--sub-kokugo); }
.s-数学 { background: var(--sub-suugaku); }
.s-英語 { background: var(--sub-eigo); }
.s-理科 { background: var(--sub-rika); }
.s-社会 { background: var(--sub-shakai); color: var(--sub-shakai-ink); }

/* subject-tinted top accent for the question card */
.tint-国語 { --tint: var(--sub-kokugo); }
.tint-数学 { --tint: var(--sub-suugaku); }
.tint-英語 { --tint: var(--sub-eigo); }
.tint-理科 { --tint: var(--sub-rika); }
.tint-社会 { --tint: var(--sub-shakai); }

/* ---------- progress ---------- */
.progress { height: 8px; background: var(--line); border-radius: 999px; overflow: hidden; }
.progress > i { display:block; height:100%; background: var(--accent); width:0; transition: width .25s ease; }

/* ---------- quiz slide ---------- */
.quizbar {
  display:flex; align-items:center; gap: 12px; flex-wrap: wrap;
  margin-bottom: 14px;
}
.quizbar .count { font-weight: 800; font-variant-numeric: tabular-nums; }
.quizbar .spacer { flex:1; }

.qcard {
  background: var(--panel); border: 1px solid var(--line); border-top: 5px solid var(--tint, var(--accent));
  border-radius: var(--radius); box-shadow: var(--shadow); padding: 26px 26px 30px;
  min-height: 46vh; display:flex; flex-direction: column;
}
.qtext { font-size: 1.35rem; font-weight: 700; line-height: 1.55; }
.qtext .sub { display:block; margin-top: 8px; font-size: 1.6rem; }

.stem {
  margin: 20px 0 6px; padding: 22px 20px; text-align:center;
  background: #f7f9fe; border: 1px dashed var(--line-strong); border-radius: 14px;
  font-size: 2rem; font-weight: 800; letter-spacing: .01em; line-height: 1.5;
  overflow-wrap: anywhere;
}
.stem.en { font-family: Georgia, "Times New Roman", "Noto Serif", serif; letter-spacing: .01em; }
.stem .blank { display:inline-block; min-width: 2.4em; border-bottom: 3px solid var(--ink); margin: 0 .12em; vertical-align: baseline; }

.choices { margin-top: 22px; display: grid; gap: 12px; }
.choice {
  display:flex; align-items:center; gap: 14px; width:100%; text-align:left;
  padding: 16px 18px; font-size: 1.15rem; font-weight: 600;
  background:#fff; border: 2px solid var(--line-strong); border-radius: 14px; color: var(--ink);
  transition: border-color .12s ease, background .12s ease, box-shadow .12s ease;
}
.choice:hover:not([disabled]) { border-color: var(--accent); }
.choice .key {
  flex: none; width: 34px; height: 34px; border-radius: 10px; display:grid; place-items:center;
  font-weight: 800; background: var(--bg); border:1px solid var(--line-strong);
}
.choice.selected { border-color: var(--accent); background: #eef2ff; box-shadow: inset 0 0 0 1px var(--accent); }
.choice.selected .key { background: var(--accent); color:#fff; border-color: var(--accent); }

/* review states (post-submit) */
.choice[disabled] { cursor: default; }
.choice.correct { border-color: var(--correct); background: #e9f8ef; }
.choice.correct .key { background: var(--correct); color:#fff; border-color: var(--correct); }
.choice.your-correct { border-color: var(--correct); background: #e9f8ef; box-shadow: 0 0 0 3px rgba(21,150,79,.18) inset; }
.choice.your-wrong { border-color: var(--wrong); background: #fdecec; }
.choice.your-wrong .key { background: var(--wrong); color:#fff; border-color: var(--wrong); }
.tag {
  margin-left: auto; flex: none; font-size: .78rem; font-weight: 800; padding: 3px 10px; border-radius: 999px;
}
.tag.ok { background: var(--correct); color:#fff; }
.tag.soft-ok { background: #d6f0e0; color: var(--correct); }
.tag.bad { background: var(--wrong); color:#fff; }
.explain {
  margin-top: 14px; padding: 12px 14px; background: #fbfcff; border:1px solid var(--line);
  border-radius: 12px; color: var(--ink-soft); font-size: .95rem;
}

/* ---------- result summary ---------- */
.scorebig { font-size: 3rem; font-weight: 900; line-height:1; }
.scorebig small { font-size: 1.1rem; font-weight: 700; color: var(--ink-soft); }
.subject-scores { display:grid; grid-template-columns: repeat(auto-fit, minmax(120px,1fr)); gap: 10px; margin-top: 16px; }
.subject-scores .box { border:1px solid var(--line); border-radius: 12px; padding: 12px; text-align:center; }
.subject-scores .box b { display:block; font-size: 1.4rem; }

/* ---------- admin tables ---------- */
.table-scroll { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; font-size: .9rem; }
th, td { border: 1px solid var(--line); padding: 8px 10px; text-align: center; white-space: nowrap; }
th { background: var(--bg); position: sticky; top: 0; }
td.name, th.name { text-align: left; font-weight: 700; position: sticky; left: 0; background: var(--panel); z-index: 1; }
th.name { z-index: 2; }
.cell-ok { background: #e9f8ef; color: var(--correct); font-weight: 800; }
.cell-bad { background: #fdecec; color: var(--wrong); font-weight: 800; }
.cell-na { background: #f4f4f6; color: #9aa3b2; }
.rate-low { color: var(--wrong); font-weight: 800; }
.chip { display:inline-block; padding: 2px 8px; border-radius: 999px; background: var(--bg); font-weight:700; font-size:.8rem; }
.rank-1 { color: #b8860b; font-weight: 900; }

.stat-row { display:flex; gap: 12px; flex-wrap: wrap; margin: 4px 0 8px; }
.stat { flex: 1 1 120px; background: var(--bg); border:1px solid var(--line); border-radius: 12px; padding: 12px 14px; }
.stat b { display:block; font-size: 1.6rem; }
.stat span { color: var(--ink-soft); font-size: .82rem; }

.tabs { display:flex; gap: 8px; flex-wrap: wrap; margin-bottom: 14px; }
.tab { padding: 8px 14px; border-radius: 999px; border:1px solid var(--line-strong); background:#fff; font-weight:800; color: var(--ink-soft); }
.tab.active { background: var(--accent); border-color: var(--accent); color:#fff; }

/* ---------- toast + dialog (custom; never uses alert/confirm) ---------- */
.toast-host { position: fixed; left: 0; right: 0; bottom: 22px; display:flex; flex-direction:column; align-items:center; gap:8px; z-index: 60; pointer-events:none; }
.toast {
  pointer-events:auto; background: #1f2430; color:#fff; padding: 12px 18px; border-radius: 12px;
  font-weight: 700; box-shadow: var(--shadow); max-width: 90vw; animation: pop .18s ease;
}
.toast.ok { background: var(--correct); }
.toast.err { background: var(--wrong); }

.modal-host { position: fixed; inset: 0; background: rgba(20,24,33,.5); display:grid; place-items:center; z-index: 70; padding: 20px; }
.modal {
  background:#fff; border-radius: 18px; box-shadow: var(--shadow); width: min(440px, 96vw);
  padding: 24px; animation: pop .16s ease;
}
.modal h3 { margin: 0 0 8px; font-size: 1.2rem; }
.modal p { margin: 0 0 18px; color: var(--ink-soft); }
.modal .btn-row { justify-content: flex-end; }
@keyframes pop { from { transform: translateY(8px) scale(.98); opacity: 0; } to { transform: none; opacity: 1; } }

.hidden { display: none !important; }
.copyline { display:flex; gap:8px; align-items:center; }
.copyline input { font-variant-numeric: tabular-nums; }
.link-list { margin-top: 10px; }
.link-list .row { margin: 10px 0; }
.link-list .row b { display:block; font-size:.82rem; color: var(--ink-soft); margin-bottom:4px; }