/* House 知识竞答平台 · 样式表 */
:root {
  --bg-0: #0b0a1f;
  --bg-1: #171334;
  --panel: rgba(255, 255, 255, 0.065);
  --panel-strong: rgba(255, 255, 255, 0.11);
  --border: rgba(255, 255, 255, 0.13);
  --border-soft: rgba(255, 255, 255, 0.07);
  --text: #f2f4ff;
  --text-dim: #a9aecb;
  --text-faint: #767b9c;
  --accent: #ffd166;
  --accent-2: #7c8cf8;
  --ok: #22d3a6;
  --warn: #ffb020;
  --danger: #ff5f6d;
  --radius: 18px;
  --radius-sm: 12px;
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.45);

  --house-qinglong: #22d3a6;
  --house-baihu: #e6ecfa;
  --house-xuanwu: #7c8cf8;
  --house-zhuque: #ff5f6d;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  min-height: 100%;
  background: var(--bg-0);
  color: var(--text);
  font-family: "PingFang SC", "Microsoft YaHei", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(58rem 34rem at 8% -8%, rgba(124, 140, 248, 0.34), transparent 62%),
    radial-gradient(46rem 32rem at 104% 6%, rgba(255, 95, 109, 0.24), transparent 60%),
    radial-gradient(50rem 34rem at 50% 112%, rgba(34, 211, 166, 0.2), transparent 62%),
    linear-gradient(170deg, var(--bg-1) 0%, var(--bg-0) 62%);
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  opacity: 0.5;
  background-image: radial-gradient(rgba(255, 255, 255, 0.12) 1px, transparent 1px);
  background-size: 46px 46px;
  mask-image: radial-gradient(70% 60% at 50% 30%, #000 0%, transparent 100%);
  -webkit-mask-image: radial-gradient(70% 60% at 50% 30%, #000 0%, transparent 100%);
}

.wrap {
  max-width: 860px;
  margin: 0 auto;
  padding: 22px 18px 56px;
}

.wrap.wide { max-width: 1180px; }

.view { display: none; animation: fade-up 0.34s cubic-bezier(0.22, 1, 0.36, 1); }
.view.active { display: block; }

/* 登录页在竖直方向居中，避免手机端下方大片留白 */
#view-login.active {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: calc(100vh - 110px);
}

@keyframes fade-up {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: none; }
}

/* ---------- 通用 ---------- */
.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: var(--shadow);
}

.card + .card { margin-top: 16px; }

.card-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin: 0 0 14px;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.card-title .sub { font-size: 12px; font-weight: 500; color: var(--text-faint); }

.brand {
  text-align: center;
  margin-bottom: 22px;
}

.brand h1 {
  margin: 0 0 8px;
  font-size: 30px;
  font-weight: 800;
  letter-spacing: 0.02em;
  background: linear-gradient(100deg, #fff 10%, var(--accent) 55%, var(--accent-2) 96%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.brand p { margin: 0; color: var(--text-dim); font-size: 13.5px; line-height: 1.7; }

.houses-strip {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin: 16px 0 4px;
  flex-wrap: wrap;
}

.house-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--panel-strong);
  border: 1px solid var(--border-soft);
  font-size: 12.5px;
  font-weight: 600;
}

.house-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  flex: 0 0 auto;
}

.dot-青龙 { background: var(--house-qinglong); }
.dot-白虎 { background: var(--house-baihu); }
.dot-玄武 { background: var(--house-xuanwu); }
.dot-朱雀 { background: var(--house-zhuque); }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid var(--border);
  background: var(--panel-strong);
  color: var(--text);
  font-family: inherit;
  font-size: 14.5px;
  font-weight: 650;
  padding: 12px 20px;
  border-radius: 14px;
  cursor: pointer;
  transition: transform 0.16s ease, background 0.16s ease, box-shadow 0.16s ease, opacity 0.16s;
}

.btn:hover:not(:disabled) { transform: translateY(-1px); background: rgba(255, 255, 255, 0.16); }
.btn:active:not(:disabled) { transform: translateY(1px) scale(0.99); }
.btn:disabled { opacity: 0.42; cursor: not-allowed; }

.btn-primary {
  background: linear-gradient(100deg, #7c8cf8, #a78bfa 55%, #ff8fa3);
  border-color: transparent;
  color: #12102a;
  font-weight: 800;
  box-shadow: 0 12px 30px rgba(124, 140, 248, 0.4);
}

.btn-primary:hover:not(:disabled) { background: linear-gradient(100deg, #8b99ff, #b39bff 55%, #ff9fb0); }

.btn-accent {
  background: linear-gradient(100deg, #ffd166, #ffb020);
  border-color: transparent;
  color: #241a00;
  font-weight: 800;
  box-shadow: 0 12px 30px rgba(255, 176, 32, 0.32);
}

.btn-danger {
  background: rgba(255, 95, 109, 0.16);
  border-color: rgba(255, 95, 109, 0.42);
  color: #ffb3b9;
}

.btn-ghost { background: transparent; }
.btn-sm { padding: 8px 14px; font-size: 13px; border-radius: 11px; }
.btn-lg { padding: 17px 26px; font-size: 17px; border-radius: 17px; }
.btn-block { width: 100%; }

/* ---------- 表单 ---------- */
.field { margin-bottom: 14px; }
.field label { display: block; font-size: 12.5px; color: var(--text-dim); margin-bottom: 7px; font-weight: 600; }

.input, .select, .textarea {
  width: 100%;
  background: rgba(8, 7, 22, 0.55);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-family: inherit;
  font-size: 15px;
  padding: 12px 14px;
  transition: border-color 0.16s, box-shadow 0.16s;
}

.input:focus, .select:focus, .textarea:focus {
  outline: none;
  border-color: rgba(124, 140, 248, 0.8);
  box-shadow: 0 0 0 4px rgba(124, 140, 248, 0.16);
}

.textarea { min-height: 120px; resize: vertical; line-height: 1.7; }
.select option { background: #191633; color: var(--text); }

.hint { font-size: 12px; color: var(--text-faint); line-height: 1.7; margin-top: 8px; }

.alert {
  display: none;
  padding: 11px 14px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  margin-bottom: 14px;
  line-height: 1.6;
}

.alert.show { display: block; animation: fade-up 0.24s ease; }
.alert-error { background: rgba(255, 95, 109, 0.14); border: 1px solid rgba(255, 95, 109, 0.4); color: #ffc0c5; }
.alert-ok { background: rgba(34, 211, 166, 0.13); border: 1px solid rgba(34, 211, 166, 0.38); color: #a5f3de; }

/* ---------- 姓名输入 ---------- */
.code-box {
  display: flex;
  gap: 10px;
  justify-content: center;
  margin: 22px 0 8px;
}

.code-box input {
  width: 100%;
  max-width: 320px;
  height: 56px;
  padding: 0 18px;
  text-align: center;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: 0.5px;
  color: var(--text);
  background: rgba(8, 7, 22, 0.6);
  border: 2px solid var(--border);
  border-radius: 15px;
  font-family: inherit;
  transition: border-color 0.16s, box-shadow 0.16s, transform 0.16s;
}

.code-box input::placeholder {
  color: var(--text-dim);
  font-weight: 500;
  letter-spacing: 1px;
}

.code-box input:focus {
  outline: none;
  border-color: var(--accent-2);
  box-shadow: 0 0 0 4px rgba(124, 140, 248, 0.2);
  transform: translateY(-2px);
}

.code-box input.filled { border-color: rgba(255, 209, 102, 0.75); }

/* ---------- 排行榜 ---------- */
.tabs {
  display: flex;
  gap: 8px;
  background: rgba(8, 7, 22, 0.5);
  border: 1px solid var(--border-soft);
  padding: 5px;
  border-radius: 15px;
  margin-bottom: 14px;
}

.tabs button {
  flex: 1;
  border: none;
  background: transparent;
  color: var(--text-dim);
  font-family: inherit;
  font-size: 14px;
  font-weight: 700;
  padding: 11px 10px;
  border-radius: 11px;
  cursor: pointer;
  transition: all 0.18s;
}

.tabs button.active {
  background: linear-gradient(100deg, rgba(124, 140, 248, 0.92), rgba(167, 139, 250, 0.92));
  color: #12102a;
  box-shadow: 0 8px 22px rgba(124, 140, 248, 0.3);
}

.rank-row {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 13px 14px;
  border-radius: 14px;
  border: 1px solid transparent;
  transition: background 0.18s, border-color 0.18s;
}

.rank-row + .rank-row { margin-top: 8px; }
.rank-row:nth-child(odd) { background: rgba(255, 255, 255, 0.035); }
.rank-row.mine { background: rgba(255, 209, 102, 0.1); border-color: rgba(255, 209, 102, 0.45); }

.rank-no {
  width: 34px;
  height: 34px;
  flex: 0 0 auto;
  border-radius: 11px;
  display: grid;
  place-items: center;
  font-weight: 800;
  font-size: 14px;
  background: var(--panel-strong);
  border: 1px solid var(--border-soft);
}

.rank-no.gold { background: linear-gradient(140deg, #ffe08a, #f5a623); color: #3a2600; border-color: transparent; }
.rank-no.silver { background: linear-gradient(140deg, #eef2ff, #b9c2d8); color: #26303f; border-color: transparent; }
.rank-no.bronze { background: linear-gradient(140deg, #f0c39b, #c98152); color: #3a1f08; border-color: transparent; }

.rank-main { flex: 1; min-width: 0; }
.rank-name { font-size: 15px; font-weight: 700; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.rank-meta { font-size: 11.5px; color: var(--text-faint); margin-top: 3px; }
.rank-score { font-size: 19px; font-weight: 800; color: var(--accent); flex: 0 0 auto; }
.rank-score small { font-size: 11px; color: var(--text-faint); font-weight: 600; margin-left: 2px; }

.empty-note { text-align: center; color: var(--text-faint); font-size: 13px; padding: 26px 10px; line-height: 1.8; }

/* ---------- 答题页 ---------- */
.exam-top {
  position: sticky;
  top: 0;
  z-index: 20;
  margin: -22px -18px 16px;
  padding: 14px 18px 12px;
  background: rgba(11, 10, 31, 0.9);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border-soft);
}

.exam-top-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; }

.timer {
  font-size: 25px;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.04em;
}

.timer.warn { color: var(--warn); }
.timer.danger { color: var(--danger); animation: pulse 1s infinite; }

@keyframes pulse { 50% { opacity: 0.45; } }

.exam-progress-text { font-size: 12.5px; color: var(--text-dim); font-weight: 600; }

.progress-track {
  height: 6px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.1);
  overflow: hidden;
  margin-top: 10px;
}

.progress-fill {
  height: 100%;
  border-radius: 999px;
  background: linear-gradient(90deg, #7c8cf8, #22d3a6);
  transition: width 0.3s ease;
}

.q-cat {
  display: inline-block;
  font-size: 11.5px;
  font-weight: 700;
  padding: 4px 11px;
  border-radius: 999px;
  background: rgba(124, 140, 248, 0.18);
  border: 1px solid rgba(124, 140, 248, 0.4);
  color: #c3cbfd;
  margin-bottom: 12px;
}

.q-text { font-size: 19px; font-weight: 700; line-height: 1.65; margin: 0 0 20px; }

.option {
  display: flex;
  align-items: center;
  gap: 14px;
  width: 100%;
  text-align: left;
  font-family: inherit;
  padding: 15px 16px;
  border-radius: 15px;
  border: 1.5px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  font-size: 15.5px;
  cursor: pointer;
  transition: all 0.16s ease;
}

.option + .option { margin-top: 10px; }
.option:hover { background: rgba(255, 255, 255, 0.085); border-color: rgba(255, 255, 255, 0.24); }

.radio-ring {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, 0.36);
  flex: 0 0 auto;
  position: relative;
  transition: border-color 0.16s;
}

.radio-ring::after {
  content: "";
  position: absolute;
  inset: 4px;
  border-radius: 50%;
  background: transparent;
  transform: scale(0.3);
  transition: transform 0.18s cubic-bezier(0.34, 1.56, 0.64, 1), background 0.18s;
}

.option.selected { border-color: var(--accent); background: rgba(255, 209, 102, 0.1); }
.option.selected .radio-ring { border-color: var(--accent); }
.option.selected .radio-ring::after { background: var(--accent); transform: scale(1); }

.opt-key {
  width: 24px;
  font-weight: 800;
  color: var(--text-faint);
  flex: 0 0 auto;
  font-size: 14px;
}

.option.selected .opt-key { color: var(--accent); }

.nav-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 20px;
}

.nav-row .page-btn {
  flex: 1;
  max-width: 130px;
  background: var(--panel-strong);
  border: 1px solid var(--border);
  color: var(--text);
  font-family: inherit;
  font-size: 15px;
  font-weight: 700;
  padding: 13px 10px;
  border-radius: 14px;
  cursor: pointer;
  transition: all 0.16s;
}

.nav-row .page-btn:hover:not(:disabled) { background: rgba(255, 255, 255, 0.16); }
.nav-row .page-btn:disabled { opacity: 0.34; cursor: not-allowed; }

.jump-btn {
  flex: 1;
  background: rgba(255, 209, 102, 0.12);
  border: 1px solid rgba(255, 209, 102, 0.42);
  color: var(--accent);
  font-family: inherit;
  font-size: 15px;
  font-weight: 800;
  padding: 13px 10px;
  border-radius: 14px;
  cursor: pointer;
  font-variant-numeric: tabular-nums;
  transition: all 0.16s;
}

.jump-btn:hover { background: rgba(255, 209, 102, 0.2); }

.submit-row { display: flex; justify-content: flex-end; margin-top: 14px; }

.answered-map {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px dashed var(--border);
}

.answered-map .dot {
  width: 26px;
  height: 26px;
  border-radius: 9px;
  display: grid;
  place-items: center;
  font-size: 11px;
  font-weight: 700;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid var(--border-soft);
  color: var(--text-faint);
  cursor: pointer;
}

.answered-map .dot.done { background: rgba(34, 211, 166, 0.22); border-color: rgba(34, 211, 166, 0.5); color: #b6f5e4; }
.answered-map .dot.current { outline: 2px solid var(--accent); outline-offset: 1px; }

/* ---------- 弹窗 ---------- */
.modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: rgba(6, 5, 18, 0.72);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}

.modal.show { display: flex; animation: fade-up 0.22s ease; }

.modal-box {
  width: 100%;
  max-width: 380px;
  background: linear-gradient(180deg, #1d1a3e, #16132f);
  border: 1px solid var(--border);
  border-radius: 22px;
  padding: 26px 22px 20px;
  text-align: center;
  box-shadow: 0 26px 70px rgba(0, 0, 0, 0.6);
}

.modal-box h3 { margin: 0 0 8px; font-size: 19px; font-weight: 800; }
.modal-box p { margin: 0 0 20px; font-size: 13.5px; color: var(--text-dim); line-height: 1.7; }
.modal-actions { display: flex; gap: 10px; }
.modal-actions .btn { flex: 1; }

/* ---------- 结果页 ---------- */
.result-hero { text-align: center; padding: 30px 20px 26px; }

.result-score {
  font-size: 76px;
  font-weight: 900;
  line-height: 1;
  font-variant-numeric: tabular-nums;
  background: linear-gradient(160deg, #fff 6%, var(--accent) 48%, #ffb020 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  filter: drop-shadow(0 8px 24px rgba(255, 176, 32, 0.32));
}

.result-score-label { font-size: 13px; color: var(--text-dim); margin-top: 8px; letter-spacing: 0.24em; }

.top-rank-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 18px;
  padding: 10px 20px;
  border-radius: 999px;
  background: linear-gradient(100deg, #ffe08a, #f5a623);
  color: #3a2600;
  font-weight: 900;
  font-size: 15.5px;
  box-shadow: 0 12px 32px rgba(245, 166, 35, 0.36);
}

.result-sub {
  margin-top: 20px;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--text);
}

.result-sub b { color: var(--accent); font-size: 20px; }

.stat-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-top: 6px; }

.stat {
  text-align: center;
  padding: 15px 6px;
  border-radius: 15px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-soft);
}

.stat .n { font-size: 24px; font-weight: 800; }
.stat .l { font-size: 11.5px; color: var(--text-faint); margin-top: 4px; }
.stat.ok .n { color: var(--ok); }
.stat.bad .n { color: var(--danger); }
.stat.blank .n { color: var(--warn); }

#confetti {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 200;
  display: none;
}

#confetti.show { display: block; }

/* ---------- 老师端 ---------- */
.t-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 18px;
}

.t-topbar h1 { margin: 0; font-size: 21px; font-weight: 800; letter-spacing: 0.01em; }

.t-nav { display: flex; gap: 8px; flex-wrap: wrap; }

.t-nav button {
  border: 1px solid var(--border);
  background: var(--panel);
  color: var(--text-dim);
  font-family: inherit;
  font-size: 13.5px;
  font-weight: 700;
  padding: 10px 17px;
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.16s;
}

.t-nav button:hover { background: var(--panel-strong); color: var(--text); }
.t-nav button.active { background: linear-gradient(100deg, #7c8cf8, #a78bfa); color: #12102a; border-color: transparent; }

.t-panel { display: none; }
.t-panel.active { display: block; animation: fade-up 0.28s ease; }

.kpi-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; }

.kpi {
  padding: 18px;
  border-radius: 16px;
  background: var(--panel);
  border: 1px solid var(--border);
}

.kpi .n { font-size: 30px; font-weight: 800; font-variant-numeric: tabular-nums; }
.kpi .l { font-size: 12.5px; color: var(--text-faint); margin-top: 5px; }

.table-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }

table.data { width: 100%; border-collapse: collapse; font-size: 13.5px; min-width: 560px; }

table.data th {
  text-align: left;
  padding: 11px 12px;
  font-size: 12px;
  font-weight: 700;
  color: var(--text-faint);
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

table.data td {
  padding: 11px 12px;
  border-bottom: 1px solid var(--border-soft);
  vertical-align: middle;
}

table.data tbody tr:hover { background: rgba(255, 255, 255, 0.035); }

.code-cell {
  font-family: "SFMono-Regular", Consolas, "Courier New", monospace;
  font-weight: 800;
  font-size: 15px;
  letter-spacing: 0.12em;
  color: var(--accent);
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 700;
  background: var(--panel-strong);
  border: 1px solid var(--border-soft);
}

.tag-demo { background: rgba(255, 176, 32, 0.16); border-color: rgba(255, 176, 32, 0.42); color: #ffd48a; }
.tag-done { background: rgba(34, 211, 166, 0.16); border-color: rgba(34, 211, 166, 0.42); color: #a5f3de; }
.tag-wait { background: rgba(255, 255, 255, 0.07); color: var(--text-faint); }

.row-actions { display: flex; gap: 6px; flex-wrap: wrap; }

.toolbar { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; margin-bottom: 14px; }
.toolbar .input, .toolbar .select { width: auto; min-width: 170px; flex: 0 1 auto; }
.toolbar .spacer { flex: 1; }

.switch { display: inline-flex; align-items: center; gap: 10px; cursor: pointer; font-size: 13.5px; font-weight: 600; }
.switch input { width: 18px; height: 18px; accent-color: var(--accent-2); cursor: pointer; }

@media (max-width: 620px) {
  .wrap { padding: 16px 14px 48px; }
  .brand h1 { font-size: 25px; }
  .code-box { gap: 7px; }
  .code-box input { font-size: 22px; border-radius: 13px; }
  .q-text { font-size: 17px; }
  .result-score { font-size: 62px; }
  .exam-top { margin: -16px -14px 14px; padding: 12px 14px 10px; }
  .timer { font-size: 22px; }
  .toolbar .input, .toolbar .select { min-width: 0; width: 100%; }
}