/* =====================================================
   浅色主题：管理台 + 答题页（清爽精致 · 法治蓝）
   ===================================================== */
:root {
  --blue: #0b3d91;
  --blue2: #1f5fd0;
  --blue3: #3b82f6;
  --gold: #d4a017;
  --red: #dc2626;
  --green: #16a34a;
  --bg: #eef2f9;
  --card: #ffffff;
  --line: #e2e8f2;
  --text: #1c2333;
  --muted: #6b7690;
  --shadow: 0 8px 24px rgba(11, 61, 145, .10);
  --shadow-sm: 0 2px 8px rgba(11, 61, 145, .06);
  --radius: 14px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
body {
  font-family: "PingFang SC", "Microsoft YaHei", "Hiragino Sans GB", -apple-system, sans-serif;
  color: var(--text);
  background: linear-gradient(180deg, #f2f6fc 0%, #e8eef8 100%);
  min-height: 100vh;
  line-height: 1.65;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
  -webkit-overflow-scrolling: touch;
}

.container { max-width: 1120px; margin: 0 auto; padding: 22px 20px 40px; }

/* ---------- 顶栏 ---------- */
.topbar {
  background: linear-gradient(120deg, #0b3d91 0%, #1f5fd0 70%, #3b82f6 100%);
  color: #fff;
  padding: 16px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  box-shadow: 0 4px 18px rgba(11, 61, 145, .35);
  position: sticky; top: 0; z-index: 50;
  border-bottom: 3px solid var(--gold);
}
.topbar h1 { font-size: 20px; margin: 0; letter-spacing: 1px; }
.topbar .sub { font-size: 13px; opacity: .88; }
.topbar input[type=password] {
  padding: 9px 12px; border-radius: 10px; border: none; font-size: 14px;
  box-shadow: inset 0 0 0 1px rgba(255,255,255,.4);
}

/* ---------- 卡片 ---------- */
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow-sm);
  transition: transform .18s ease, box-shadow .18s ease;
}

h2 { color: var(--blue); font-size: 20px; margin: 26px 0 8px; padding-bottom: 8px; border-bottom: 2px solid #dbe4f5; letter-spacing: 1px; }

/* ---------- 按钮 ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  border: none; border-radius: 10px; padding: 10px 18px;
  font-size: 14px; cursor: pointer; text-decoration: none; color: #fff;
  background: linear-gradient(135deg, var(--blue2), var(--blue3));
  box-shadow: 0 3px 10px rgba(31, 95, 208, .3);
  transition: transform .15s, box-shadow .15s, opacity .15s;
}
.btn:hover { transform: translateY(-1px); box-shadow: 0 5px 16px rgba(31, 95, 208, .4); }
.btn:active { transform: translateY(0); }
.btn.gray { background: linear-gradient(135deg, #64748b, #94a3b8); box-shadow: 0 3px 10px rgba(100,116,139,.3); }
.btn.gold { background: linear-gradient(135deg, #b8860b, #d4a017); box-shadow: 0 3px 10px rgba(212,160,23,.35); }
.btn.danger { background: linear-gradient(135deg, #b91c1c, #ef4444); box-shadow: 0 3px 10px rgba(220,38,38,.3); }
.btn.sm { padding: 7px 13px; font-size: 13px; }
.btn:disabled { opacity: .45; cursor: not-allowed; transform: none; box-shadow: none; }

/* ---------- 管理台：板块网格 ---------- */
.section-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 16px;
  margin-top: 14px;
}
.section-card { display: flex; flex-direction: column; gap: 8px; }
.section-card:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.section-card .no { color: var(--muted); font-size: 12px; letter-spacing: .5px; }
.section-card h3 { margin: 0; font-size: 17px; color: var(--blue); }
.section-card .desc { font-size: 13px; color: var(--muted); }
.section-card .qrcode {
  text-align: center; background: #fff;
  border: 1px solid var(--line); border-radius: 12px; padding: 10px;
}
.section-card .qrcode img { width: 156px; height: 156px; border-radius: 8px; }
.section-card .actions { display: flex; flex-wrap: wrap; gap: 6px; }
.section-card .link { font-size: 12px; color: var(--muted); word-break: break-all; background: #f5f8fd; padding: 4px 8px; border-radius: 6px; }

/* ---------- 统计卡（管理台概况） ---------- */
.stat-row { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; margin: 20px 0; }
.stat {
  flex: 1; min-width: 150px; max-width: 260px; text-align: center;
  padding: 20px 12px; border-radius: var(--radius); color: #fff;
  box-shadow: var(--shadow);
}
.stat:nth-child(1) { background: linear-gradient(135deg, #0b3d91, #2f6fd0); }
.stat:nth-child(2) { background: linear-gradient(135deg, #b8860b, #e5b53a); }
.stat:nth-child(3) { background: linear-gradient(135deg, #15803d, #22c55e); }
.stat .num { font-size: 46px; font-weight: 800; text-shadow: 0 2px 6px rgba(0,0,0,.25); }
.stat .label { font-size: 15px; opacity: .92; }

/* ---------- 答题页（手机） ---------- */
.quiz { max-width: 620px; margin: 0 auto; padding: 18px 16px calc(36px + env(safe-area-inset-bottom)); }
.quiz .qhead { text-align: center; margin-bottom: 10px; }
.quiz .qhead h1 {
  font-size: 17px; color: var(--muted); margin: 0;
  font-weight: 600; letter-spacing: .5px;
}
.quiz .nick-row { display: flex; gap: 8px; margin-bottom: 14px; }
.quiz .nick-row input {
  flex: 1; padding: 12px 14px; font-size: 16px; min-height: 48px;
  border: 1.5px solid var(--line); border-radius: 12px; outline: none;
  transition: border-color .15s, box-shadow .15s;
}
.quiz .nick-row input:focus { border-color: var(--blue3); box-shadow: 0 0 0 3px rgba(59,130,246,.15); }
.quiz .question {
  background: var(--card); border: 1px solid var(--line); border-radius: 14px;
  padding: 16px; margin-bottom: 14px; box-shadow: var(--shadow-sm);
}
.quiz .question .qno {
  font-size: 12px; color: var(--blue2); font-weight: 700; letter-spacing: .5px;
  background: #eaf1fc; display: inline-block; padding: 2px 10px; border-radius: 999px;
}
.quiz .question .qtext { font-size: 17px; margin: 10px 0 14px; line-height: 1.6; }
/* 案例背景（答题前先讲故事） */
.quiz .question .q-bg {
  margin: 0 0 12px; padding: 12px 14px;
  background: #f0f5ff; border-left: 4px solid var(--blue2);
  border-radius: 10px; font-size: 15px; line-height: 1.7; color: #3a4a66;
}
.quiz .question .q-bg-label { font-size: 12px; font-weight: 700; color: var(--blue2); margin-bottom: 4px; letter-spacing: 1px; }
.quiz .opts { display: flex; flex-direction: column; gap: 10px; }
.quiz .opts-judge { flex-direction: row; }
.quiz .opts-judge .opt { justify-content: center; flex: 1; }
.quiz .opt {
  display: flex; align-items: center; gap: 10px;
  width: 100%; padding: 12px 14px; min-height: 48px;
  border: 2px solid var(--line); border-radius: 12px;
  font-size: 16px; text-align: left; cursor: pointer; background: #fff;
  user-select: none; transition: all .15s;
}
.quiz .opt .opt-badge {
  flex-shrink: 0; width: 28px; height: 28px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%; background: #eef3fb; color: var(--muted);
  font-weight: 700; font-size: 14px;
}
.quiz .opt .opt-text { flex: 1; }
.quiz .opt-ok .opt-badge { background: #e6f6ec; color: var(--green); }
.quiz .opt-no .opt-badge { background: #fdeaea; color: var(--red); }
.quiz .opt:active { transform: scale(.97); background: #eef4ff; }
.quiz .opt:hover { border-color: var(--blue3); background: #f2f7ff; }
.quiz .opt.sel {
  border-color: var(--blue2);
  background: linear-gradient(135deg, #eaf1fc, #dbe7fb);
  color: var(--blue); font-weight: 700;
  box-shadow: 0 2px 8px rgba(31,95,208,.2);
}
.quiz .opt.sel .opt-badge {
  background: linear-gradient(135deg, var(--blue2), var(--blue3));
  color: #fff;
}
.quiz .submit {
  width: 100%; padding: 15px; font-size: 18px; margin-top: 6px;
  border-radius: 14px; min-height: 52px;
}
.quiz .success { text-align: center; padding: 50px 20px; animation: fadeUp .5s ease; }
.quiz .success .big { font-size: 28px; font-weight: 800; color: var(--green); }
.quiz .success .big { animation: bounce .6s ease; }
@keyframes bounce { 0% { transform: scale(.6); opacity: 0; } 60% { transform: scale(1.1); } 100% { transform: scale(1); } }
@keyframes fadeUp { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: none; } }

/* ---------- 通用 ---------- */
.hidden { display: none !important; }
.muted { color: var(--muted); }
.small { font-size: 12px; }

/* 提交按钮加载转圈 */
.spinner {
  display: inline-block; width: 16px; height: 16px;
  border: 3px solid rgba(255,255,255,.4); border-top-color: #fff;
  border-radius: 50%; animation: spin .7s linear infinite;
  vertical-align: -3px; margin-right: 6px;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- 答题页第一步：昵称门 ---------- */
.gate {
  max-width: 420px; margin: 34px auto 0; text-align: center;
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 34px 26px; box-shadow: var(--shadow);
  animation: fadeUp .4s ease;
}
.gate .gate-icon { font-size: 54px; line-height: 1; }
.gate .gate-title { font-size: 21px; font-weight: 800; color: var(--blue); margin: 12px 0 4px; letter-spacing: 1px; }
.gate p { margin: 4px 0 0; }
.gate input {
  width: 100%; padding: 13px 14px; font-size: 17px; margin-top: 18px; min-height: 48px;
  border: 1.5px solid var(--line); border-radius: 12px; outline: none; text-align: center;
  transition: border-color .15s, box-shadow .15s;
}
.gate input:focus { border-color: var(--blue3); box-shadow: 0 0 0 3px rgba(59,130,246,.15); }
.gate .gate-btn { width: 100%; margin-top: 16px; padding: 14px; font-size: 17px; border-radius: 12px; min-height: 48px; }
.gate-err { color: var(--red); font-size: 13px; margin-top: 12px; }

/* 答题人徽标 */
.nick-badge {
  display: inline-block; font-size: 14px; margin-bottom: 14px;
  background: linear-gradient(135deg, #eaf1fc, #dbe7fb);
  color: var(--blue); padding: 7px 16px; border-radius: 999px;
}
.nick-badge a { color: var(--muted); font-size: 12px; margin-left: 4px; text-decoration: none; }

/* ---------- 答题结果页 ---------- */
.result-head { text-align: center; margin: 0 0 18px; }
.result-emoji { font-size: 22px; font-weight: 800; color: var(--blue); }
.result-score { font-size: 34px; font-weight: 800; color: var(--blue); margin-top: 4px; }
.result-rank {
  display: inline-block; margin-top: 10px; padding: 6px 18px;
  background: linear-gradient(135deg, #b8860b, #d4a017);
  color: #fff; font-size: 18px; font-weight: 800; border-radius: 999px;
  box-shadow: 0 3px 10px rgba(212,160,23,.35);
}
.result-cum {
  display: inline-block; margin-top: 10px; padding: 7px 18px;
  background: linear-gradient(135deg, #eaf1fc, #dbe7fb);
  color: var(--blue2); font-size: 15px; font-weight: 700; border-radius: 999px;
}
.q-result {
  background: var(--card); border: 1px solid var(--line); border-radius: 14px;
  padding: 14px 16px; margin-bottom: 12px; box-shadow: var(--shadow-sm);
  border-left: 5px solid var(--green);
  animation: fadeUp .4s ease;
}
.q-result.is-wrong { border-left-color: var(--red); }
.q-result .q-result-top { display: flex; justify-content: space-between; align-items: center; }
.q-result .qno { font-size: 12px; font-weight: 700; }
.q-result.is-right .qno { color: var(--green); }
.q-result.is-wrong .qno { color: var(--red); }
.q-result .q-icon { font-size: 22px; line-height: 1; }
.q-result .qtext { font-size: 16px; margin: 8px 0 10px; line-height: 1.6; }
.q-result .answer-lines { display: flex; flex-direction: column; gap: 3px; }
.q-result .your { font-size: 14px; color: var(--muted); }
.q-result .right { font-size: 15px; font-weight: 700; color: var(--green); }
.q-result.is-wrong .right { color: var(--red); }