:root {
  --primary: #1a56db;
  --primary-dark: #1e429f;
  --primary-light: #e1effe;
  --bg: #f3f5f9;
  --card: #ffffff;
  --text: #1f2937;
  --text-2: #6b7280;
  --border: #e5e7eb;
  --success: #057a55;
  --success-bg: #def7ec;
  --warn: #b45309;
  --warn-bg: #fdf6b2;
  --danger: #e02424;
  --danger-bg: #fde8e8;
  --info-bg: #e1effe;
  --info: #1c64f2;
  --sidebar: #111827;
  --sidebar-active: #1f2937;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  font-family: "Microsoft YaHei", "PingFang SC", "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
}

/* ---------- 登录页 ---------- */
.login-wrap {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #1e429f 0%, #1a56db 50%, #3f83f8 100%);
}
.login-card {
  background: #fff;
  border-radius: 16px;
  padding: 40px 44px;
  width: 400px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.25);
}
.login-card h1 { font-size: 22px; text-align: center; margin-bottom: 6px; color: var(--primary-dark); }
.login-card .sub { text-align: center; color: var(--text-2); font-size: 13px; margin-bottom: 26px; }
.login-card input {
  width: 100%; padding: 12px 14px; margin-bottom: 14px;
  border: 1px solid var(--border); border-radius: 8px; font-size: 14px;
}
.login-card input:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-light); }
.login-card button {
  width: 100%; padding: 12px; background: var(--primary); color: #fff;
  border: none; border-radius: 8px; font-size: 15px; cursor: pointer; font-weight: 600;
}
.login-card button:hover { background: var(--primary-dark); }
.login-tip { margin-top: 16px; font-size: 12px; color: var(--text-2); line-height: 1.8; background: #f9fafb; padding: 10px 12px; border-radius: 8px; }
.login-err { color: var(--danger); font-size: 13px; margin-bottom: 10px; text-align: center; min-height: 18px; }

/* ---------- 主布局 ---------- */
.layout { display: flex; min-height: 100vh; }
.sidebar {
  width: 216px; background: var(--sidebar); color: #d1d5db;
  display: flex; flex-direction: column; position: fixed; top: 0; bottom: 0; left: 0; z-index: 10;
}
.sidebar .logo {
  padding: 18px 20px; font-size: 16px; font-weight: 700; color: #fff;
  border-bottom: 1px solid #374151; letter-spacing: 1px;
}
.sidebar .logo small { display: block; font-size: 11px; font-weight: 400; color: #9ca3af; margin-top: 4px; letter-spacing: 0; }
.nav { flex: 1; overflow-y: auto; padding: 10px 0; }
.nav-item {
  padding: 11px 20px; cursor: pointer; display: flex; align-items: center; gap: 10px;
  font-size: 14px; border-left: 3px solid transparent; transition: all .15s;
}
.nav-item:hover { background: var(--sidebar-active); color: #fff; }
.nav-item.active { background: var(--sidebar-active); color: #fff; border-left-color: var(--primary); }
.nav-item .ico { width: 18px; text-align: center; }
.main { flex: 1; margin-left: 216px; display: flex; flex-direction: column; min-width: 0; }
.topbar {
  height: 56px; background: #fff; border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between; padding: 0 24px;
  position: sticky; top: 0; z-index: 5;
}
.topbar .page-title { font-size: 16px; font-weight: 600; }
.topbar .user { display: flex; align-items: center; gap: 14px; font-size: 13px; color: var(--text-2); }
.topbar .user .badge { background: var(--primary-light); color: var(--primary-dark); padding: 3px 10px; border-radius: 20px; font-size: 12px; }
.topbar a { color: var(--primary); cursor: pointer; text-decoration: none; margin-left: 8px; }
.content { padding: 20px 24px; flex: 1; }

/* ---------- 卡片/工具栏/表格 ---------- */
.card { background: var(--card); border-radius: 12px; padding: 18px 20px; box-shadow: 0 1px 3px rgba(16, 24, 40, 0.06); margin-bottom: 18px; }
.toolbar { display: flex; gap: 10px; margin-bottom: 14px; flex-wrap: wrap; align-items: center; }
.toolbar input, .toolbar select {
  padding: 8px 12px; border: 1px solid var(--border); border-radius: 8px; font-size: 13px; min-width: 150px;
}
.btn {
  padding: 8px 16px; border-radius: 8px; border: none; cursor: pointer; font-size: 13px;
  background: var(--primary); color: #fff; transition: all .15s;
}
.btn:hover { background: var(--primary-dark); }
.btn.gray { background: #f3f4f6; color: var(--text); border: 1px solid var(--border); }
.btn.gray:hover { background: #e5e7eb; }
.btn.green { background: var(--success); }
.btn.orange { background: #d97706; }
.btn.red { background: var(--danger); }
.btn.sm { padding: 4px 10px; font-size: 12px; border-radius: 6px; margin-right: 4px; }
.btn:disabled { opacity: .5; cursor: not-allowed; }

table.tbl { width: 100%; border-collapse: collapse; font-size: 13px; }
table.tbl th {
  text-align: left; padding: 10px 12px; background: #f9fafb; color: var(--text-2);
  font-weight: 600; border-bottom: 1px solid var(--border); white-space: nowrap;
}
table.tbl td { padding: 10px 12px; border-bottom: 1px solid #f3f4f6; vertical-align: middle; }
table.tbl tr:hover td { background: #f9fafb; }
.empty { text-align: center; color: var(--text-2); padding: 40px 0; }

.tag { display: inline-block; padding: 2px 10px; border-radius: 20px; font-size: 12px; white-space: nowrap; }
.tag.blue { background: var(--info-bg); color: var(--info); }
.tag.green { background: var(--success-bg); color: var(--success); }
.tag.orange { background: var(--warn-bg); color: var(--warn); }
.tag.red { background: var(--danger-bg); color: var(--danger); }
.tag.gray { background: #f3f4f6; color: var(--text-2); }

/* ---------- 弹窗 ---------- */
.mask {
  position: fixed; inset: 0; background: rgba(17, 24, 39, .45);
  display: flex; align-items: center; justify-content: center; z-index: 100;
}
.modal {
  background: #fff; border-radius: 14px; width: 720px; max-width: 94vw;
  max-height: 88vh; display: flex; flex-direction: column; box-shadow: 0 20px 60px rgba(0,0,0,.25);
}
.modal.sm { width: 480px; }
.modal-head { padding: 16px 22px; border-bottom: 1px solid var(--border); display: flex; justify-content: space-between; align-items: center; }
.modal-head h3 { font-size: 16px; }
.modal-head .x { cursor: pointer; color: var(--text-2); font-size: 20px; line-height: 1; }
.modal-body { padding: 20px 22px; overflow-y: auto; }
.modal-foot { padding: 14px 22px; border-top: 1px solid var(--border); display: flex; justify-content: flex-end; gap: 10px; }

.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px 18px; }
.form-item { display: flex; flex-direction: column; gap: 6px; }
.form-item.span2 { grid-column: span 2; }
.form-item label { font-size: 13px; color: var(--text-2); }
.form-item label .req { color: var(--danger); margin-left: 2px; }
.form-item input, .form-item select, .form-item textarea {
  padding: 9px 12px; border: 1px solid var(--border); border-radius: 8px; font-size: 13px; font-family: inherit;
}
.form-item input:focus, .form-item select:focus, .form-item textarea:focus {
  outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-light);
}
.form-item textarea { resize: vertical; min-height: 72px; }

/* ---------- 看板 ---------- */
.stat-cards { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; margin-bottom: 18px; }
.stat-card { background: #fff; border-radius: 12px; padding: 18px 20px; box-shadow: 0 1px 3px rgba(16,24,40,.06); }
.stat-card .t { font-size: 13px; color: var(--text-2); margin-bottom: 8px; }
.stat-card .v { font-size: 26px; font-weight: 700; color: var(--text); }
.stat-card .u { font-size: 12px; color: var(--text-2); font-weight: 400; margin-left: 4px; }
.stat-card.c1 .v { color: var(--primary); }
.stat-card.c2 .v { color: var(--success); }
.stat-card.c3 .v { color: #d97706; }
.stat-card.c4 .v { color: #7c3aed; }
.charts { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.chart-box { background: #fff; border-radius: 12px; padding: 16px 20px; box-shadow: 0 1px 3px rgba(16,24,40,.06); }
.chart-box h4 { font-size: 14px; margin-bottom: 10px; color: var(--text); }
.chart { width: 100%; height: 300px; }

/* ---------- 报告 ---------- */
.report-box {
  background: #fff; border-radius: 12px; padding: 30px 36px; box-shadow: 0 1px 3px rgba(16,24,40,.06);
  white-space: pre-wrap; font-size: 14px; line-height: 2; font-family: "Microsoft YaHei", sans-serif;
}

/* ---------- 问卷构建器 ---------- */
.q-item { border: 1px solid var(--border); border-radius: 10px; padding: 14px; margin-bottom: 12px; background: #f9fafb; }
.q-item .row { display: flex; gap: 10px; margin-bottom: 8px; align-items: center; }
.q-item input, .q-item select { padding: 8px 10px; border: 1px solid var(--border); border-radius: 8px; font-size: 13px; }

/* ---------- 提示 ---------- */
.toast {
  position: fixed; top: 20px; left: 50%; transform: translateX(-50%);
  background: #111827; color: #fff; padding: 10px 22px; border-radius: 8px;
  font-size: 13px; z-index: 999; box-shadow: 0 6px 20px rgba(0,0,0,.25); animation: fadeIn .2s;
}
.toast.err { background: var(--danger); }
@keyframes fadeIn { from { opacity: 0; transform: translate(-50%, -8px); } to { opacity: 1; transform: translate(-50%, 0); } }

pre.logbox { background: #111827; color: #a5f3fc; padding: 16px; border-radius: 10px; font-size: 12px; line-height: 1.9; white-space: pre-wrap; max-height: 300px; overflow-y: auto; }

/* ---------- 作答页 ---------- */
.answer-wrap { max-width: 640px; margin: 0 auto; padding: 24px 16px 60px; }
.answer-card { background: #fff; border-radius: 14px; padding: 26px 26px; box-shadow: 0 2px 10px rgba(16,24,40,.08); margin-bottom: 16px; }
.answer-head h1 { font-size: 20px; color: var(--primary-dark); margin-bottom: 8px; }
.answer-head p { color: var(--text-2); font-size: 13px; line-height: 1.8; }
.aq { margin-bottom: 22px; }
.aq .qt { font-size: 15px; font-weight: 600; margin-bottom: 10px; }
.stars { display: flex; gap: 8px; }
.star { font-size: 30px; color: #d1d5db; cursor: pointer; transition: transform .1s; }
.star.on { color: #f59e0b; }
.star:hover { transform: scale(1.15); }
.opt { display: block; padding: 10px 14px; border: 1px solid var(--border); border-radius: 8px; margin-bottom: 8px; cursor: pointer; }
.opt.on { border-color: var(--primary); background: var(--primary-light); color: var(--primary-dark); }
.aq textarea { width: 100%; padding: 10px 12px; border: 1px solid var(--border); border-radius: 8px; min-height: 80px; font-family: inherit; font-size: 13px; }

@media (max-width: 1100px) {
  .stat-cards { grid-template-columns: repeat(2, 1fr); }
  .charts { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .form-item.span2 { grid-column: span 1; }
}