/* ============ 问卷云 · 全局样式 ============ */
:root {
  --primary: #6366f1;
  --primary-dark: #4f46e5;
  --primary-light: #eef2ff;
  --accent: #8b5cf6;
  --grad: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
  --bg: #f4f6fb;
  --card: #ffffff;
  --text: #1e293b;
  --text-2: #64748b;
  --text-3: #94a3b8;
  --border: #e2e8f0;
  --green: #10b981;
  --green-bg: #ecfdf5;
  --orange: #f59e0b;
  --orange-bg: #fffbeb;
  --red: #ef4444;
  --red-bg: #fef2f2;
  --radius: 14px;
  --shadow: 0 1px 3px rgba(15, 23, 42, .06), 0 4px 16px rgba(15, 23, 42, .05);
  --shadow-lg: 0 8px 30px rgba(15, 23, 42, .12);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  font-size: 15px;
  line-height: 1.6;
}
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }
input, textarea, select { font-family: inherit; font-size: 14.5px; color: var(--text); }

/* ============ 导航栏 ============ */
.navbar {
  position: sticky; top: 0; z-index: 50;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 28px; height: 60px;
  background: rgba(255, 255, 255, .88);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.brand { display: flex; align-items: center; gap: 9px; font-size: 18px; font-weight: 700; }
.brand-icon { font-size: 22px; }
.nav-right { display: flex; align-items: center; gap: 14px; }
.nav-user {
  display: flex; align-items: center; gap: 8px;
  padding: 5px 12px; border-radius: 999px;
  background: var(--primary-light); color: var(--primary-dark);
  font-size: 13px; font-weight: 500; max-width: 260px;
}
.nav-user span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ============ 通用组件 ============ */
.container { max-width: 1080px; margin: 0 auto; padding: 32px 20px 80px; }
.container-narrow { max-width: 760px; margin: 0 auto; padding: 32px 20px 80px; }

.card {
  background: var(--card); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 24px;
}
.page-title { font-size: 24px; font-weight: 700; margin-bottom: 4px; }
.page-sub { color: var(--text-2); font-size: 14px; margin-bottom: 26px; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 9px 18px; border-radius: 10px; border: 1px solid var(--border);
  background: #fff; color: var(--text); font-size: 14px; font-weight: 500;
  transition: all .18s ease; white-space: nowrap;
}
.btn:hover { border-color: var(--primary); color: var(--primary); transform: translateY(-1px); }
.btn:disabled { opacity: .55; cursor: not-allowed; transform: none; }
.btn-primary {
  background: var(--grad); color: #fff; border: none;
  box-shadow: 0 4px 14px rgba(99, 102, 241, .35);
}
.btn-primary:hover { color: #fff; opacity: .92; box-shadow: 0 6px 20px rgba(99, 102, 241, .45); }
.btn-danger { color: var(--red); }
.btn-danger:hover { border-color: var(--red); background: var(--red-bg); color: var(--red); }
.btn-sm { padding: 6px 13px; font-size: 13px; border-radius: 8px; }
.btn-lg { padding: 12px 26px; font-size: 15.5px; border-radius: 12px; }

.input, .textarea, .select {
  width: 100%; padding: 10px 14px;
  border: 1.5px solid var(--border); border-radius: 10px;
  background: #fff; outline: none; transition: border-color .15s;
}
.input:focus, .textarea:focus, .select:focus { border-color: var(--primary); }
.textarea { resize: vertical; min-height: 84px; }
.label { display: block; font-size: 13.5px; font-weight: 600; color: var(--text-2); margin: 14px 0 6px; }

.badge {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 3px 11px; border-radius: 999px;
  font-size: 12.5px; font-weight: 600;
}
.badge-draft { background: #f1f5f9; color: var(--text-2); }
.badge-published { background: var(--green-bg); color: var(--green); }
.badge-closed { background: var(--orange-bg); color: var(--orange); }

/* ============ 加载 & 提示 ============ */
.page-loading { text-align: center; padding: 120px 0; color: var(--text-3); }
.spinner {
  width: 38px; height: 38px; margin: 0 auto 14px;
  border: 3.5px solid var(--primary-light); border-top-color: var(--primary);
  border-radius: 50%; animation: spin .8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

#toast-box { position: fixed; top: 74px; left: 50%; transform: translateX(-50%); z-index: 200; display: flex; flex-direction: column; gap: 10px; align-items: center; }
.toast {
  padding: 11px 22px; border-radius: 12px; color: #fff; font-size: 14px;
  box-shadow: var(--shadow-lg); animation: toast-in .25s ease;
  background: #334155; max-width: 80vw;
}
.toast-success { background: var(--green); }
.toast-error { background: var(--red); }
@keyframes toast-in { from { opacity: 0; transform: translateY(-8px); } }

/* ============ 登录页 ============ */
.auth-wrap { max-width: 420px; margin: 48px auto 0; padding: 0 20px 80px; }
.auth-hero { text-align: center; margin-bottom: 26px; }
.auth-hero .logo-big { font-size: 46px; }
.auth-hero h1 { font-size: 24px; margin: 8px 0 4px; }
.auth-hero p { color: var(--text-2); font-size: 14px; }
.auth-tabs { display: flex; background: #eef1f6; border-radius: 12px; padding: 4px; margin-bottom: 20px; }
.auth-tab {
  flex: 1; padding: 8px 0; border: none; background: transparent;
  border-radius: 9px; font-size: 13.5px; font-weight: 500; color: var(--text-2);
  transition: all .18s;
}
.auth-tab.active { background: #fff; color: var(--primary-dark); font-weight: 600; box-shadow: 0 1px 4px rgba(0,0,0,.08); }
.auth-form { display: none; }
.auth-form.active { display: block; }
.form-error { color: var(--red); font-size: 13px; margin-top: 10px; min-height: 18px; }
.code-row { display: flex; gap: 10px; }
.code-row .input { flex: 1; }
.auth-switch { text-align: center; font-size: 13px; color: var(--text-2); margin-top: 14px; }
.auth-switch a { color: var(--primary); cursor: pointer; font-weight: 500; }

/* ============ 控制台 ============ */
.dash-head { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 14px; margin-bottom: 24px; }
.survey-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(310px, 1fr)); gap: 18px; }
.survey-card {
  background: var(--card); border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 20px; display: flex; flex-direction: column; gap: 10px;
  transition: transform .18s, box-shadow .18s; position: relative; overflow: hidden;
}
.survey-card::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 4px;
  background: var(--grad); opacity: 0; transition: opacity .18s;
}
.survey-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }
.survey-card:hover::before { opacity: 1; }
.survey-card h3 { font-size: 16.5px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.survey-card .desc { color: var(--text-2); font-size: 13.5px; min-height: 20px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.survey-meta { display: flex; gap: 14px; color: var(--text-3); font-size: 12.5px; align-items: center; }
.survey-actions { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 4px; padding-top: 12px; border-top: 1px dashed var(--border); }
.count-chip { color: var(--primary-dark); background: var(--primary-light); padding: 1px 9px; border-radius: 999px; font-weight: 600; }

.empty-state { text-align: center; padding: 70px 20px; color: var(--text-3); }
.empty-state .big { font-size: 52px; margin-bottom: 12px; }
.empty-state p { margin-bottom: 18px; }

/* ============ 编辑器 ============ */
.q-card {
  background: var(--card); border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 20px; margin-bottom: 16px; border-left: 4px solid var(--primary);
  animation: fade-up .25s ease;
}
@keyframes fade-up { from { opacity: 0; transform: translateY(8px); } }
.q-head { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.q-index {
  width: 26px; height: 26px; border-radius: 8px; background: var(--grad);
  color: #fff; font-size: 13px; font-weight: 700;
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.q-type-tag { font-size: 12px; color: var(--primary-dark); background: var(--primary-light); padding: 2px 10px; border-radius: 999px; font-weight: 600; }
.q-tools { margin-left: auto; display: flex; gap: 6px; }
.icon-btn {
  width: 30px; height: 30px; border: none; border-radius: 8px;
  background: #f1f5f9; color: var(--text-2); font-size: 14px;
  display: flex; align-items: center; justify-content: center; transition: all .15s;
}
.icon-btn:hover { background: var(--primary-light); color: var(--primary); }
.icon-btn.del:hover { background: var(--red-bg); color: var(--red); }
.q-required { display: flex; align-items: center; gap: 6px; font-size: 13px; color: var(--text-2); margin-top: 12px; cursor: pointer; user-select: none; }
.q-required input { accent-color: var(--primary); width: 15px; height: 15px; cursor: pointer; }
.logic-row { display: flex; align-items: center; gap: 10px; margin-top: 10px; }
.logic-btn { font-size: 12.5px; padding: 5px 12px; }
.logic-btn.active { border-color: var(--primary); color: var(--primary); background: var(--primary-light); }
.logic-panel {
  margin-top: 12px; padding: 14px; border-radius: 10px;
  background: #f8faff; border: 1px dashed #c7d2fe;
  animation: fade-up .2s ease;
}
.logic-panel .logic-tip { font-size: 12.5px; color: var(--text-2); margin-bottom: 8px; }
.logic-panel .label { margin: 0 0 8px; }
.logic-opts { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px; }
.logic-opt {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 12px; border: 1.5px solid var(--border); border-radius: 999px;
  font-size: 13px; cursor: pointer; background: #fff; transition: all .15s; user-select: none;
}
.logic-opt:hover { border-color: var(--primary); }
.logic-opt.checked { border-color: var(--primary); background: var(--primary-light); color: var(--primary-dark); font-weight: 500; }
.logic-opt input { accent-color: var(--primary); width: 14px; height: 14px; cursor: pointer; }
.logic-empty { font-size: 12.5px; color: var(--text-3); }
.logic-badge {
  display: inline-flex; align-items: center; gap: 4px; margin-left: 6px;
  font-size: 11.5px; color: #4f46e5; background: #eef2ff;
  padding: 1px 8px; border-radius: 999px; font-weight: 500; vertical-align: middle;
}
.add-q-bar { display: flex; flex-wrap: wrap; gap: 9px; padding: 18px; background: var(--card); border-radius: var(--radius); box-shadow: var(--shadow); margin-bottom: 20px; }
.editor-foot { display: flex; gap: 12px; margin-top: 22px; flex-wrap: wrap; }

/* 问卷预览渲染（填写页 & 编辑预览） */
.q-view { margin-bottom: 22px; }
.q-view .q-title { font-weight: 600; margin-bottom: 4px; }
.q-view .q-title .req { color: var(--red); margin-left: 3px; }
.opt-row {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 14px; margin-top: 8px;
  border: 1.5px solid var(--border); border-radius: 10px;
  cursor: pointer; transition: all .15s; background: #fff;
}
.opt-row:hover { border-color: var(--primary); background: #fafbff; }
.opt-row.checked { border-color: var(--primary); background: var(--primary-light); }
.opt-row input { accent-color: var(--primary); width: 16px; height: 16px; flex-shrink: 0; }
.stars { display: flex; gap: 6px; margin-top: 8px; }
.star {
  font-size: 30px; cursor: pointer; color: #d7dce6; transition: transform .12s, color .12s;
  user-select: none; line-height: 1;
}
.star.on { color: #f59e0b; transform: scale(1.12); }
.star:hover { transform: scale(1.15); }

/* ============ 分享弹窗 ============ */
.modal-mask {
  position: fixed; inset: 0; z-index: 100;
  background: rgba(15, 23, 42, .45); backdrop-filter: blur(3px);
  display: flex; align-items: center; justify-content: center; padding: 20px;
  animation: fade-in .18s ease;
}
@keyframes fade-in { from { opacity: 0; } }
.modal {
  background: #fff; border-radius: 18px; padding: 28px;
  width: 100%; max-width: 480px; box-shadow: var(--shadow-lg);
  animation: pop .22s cubic-bezier(.2, 1.4, .5, 1);
}
@keyframes pop { from { transform: scale(.92); opacity: 0; } }
.modal h3 { font-size: 18px; margin-bottom: 14px; }
.share-link-box {
  display: flex; gap: 9px; margin: 14px 0 18px;
}
.share-link-box .input { flex: 1; font-size: 13px; color: var(--text-2); background: #f8fafc; }
.share-qr-tip { font-size: 13px; color: var(--text-2); }

/* ============ 统计页 ============ */
.stat-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 14px; margin-bottom: 26px; }
.stat-card { background: var(--card); border-radius: var(--radius); box-shadow: var(--shadow); padding: 18px 20px; }
.stat-card .num { font-size: 28px; font-weight: 800; background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
.stat-card .lbl { color: var(--text-2); font-size: 13px; margin-top: 2px; }
.q-stat { background: var(--card); border-radius: var(--radius); box-shadow: var(--shadow); padding: 22px; margin-bottom: 18px; }
.q-stat h3 { font-size: 15.5px; margin-bottom: 4px; }
.q-stat .q-sub { color: var(--text-3); font-size: 12.5px; margin-bottom: 14px; }
.chart-box { max-width: 480px; }
.text-answers { display: flex; flex-direction: column; gap: 8px; margin-top: 8px; }
.text-answer {
  background: #f8fafc; border: 1px solid var(--border); border-radius: 10px;
  padding: 9px 14px; font-size: 13.5px; color: var(--text);
}
.text-answer .t { color: var(--text-3); font-size: 12px; margin-right: 10px; }
.avg-stars { font-size: 15px; color: var(--text-2); margin-bottom: 10px; }
.avg-stars b { color: #f59e0b; font-size: 20px; }
.detail-table { width: 100%; border-collapse: collapse; font-size: 13px; margin-top: 12px; }
.detail-table th, .detail-table td { border-bottom: 1px solid var(--border); padding: 9px 10px; text-align: left; word-break: break-all; }
.detail-table th { background: #f8fafc; color: var(--text-2); font-weight: 600; white-space: nowrap; }
.table-wrap { overflow-x: auto; }

/* ============ 填写页 ============ */
.fill-head {
  background: var(--grad); border-radius: 18px; color: #fff;
  padding: 34px 30px; margin-bottom: 26px; box-shadow: 0 8px 24px rgba(99,102,241,.3);
}
.fill-head h1 { font-size: 24px; margin-bottom: 6px; }
.fill-head p { opacity: .92; font-size: 14px; }
.fill-head .meta { margin-top: 12px; font-size: 13px; opacity: .85; }
.center-note { text-align: center; padding: 80px 20px; }
.center-note .big { font-size: 60px; margin-bottom: 14px; }
.center-note h2 { margin-bottom: 8px; }
.center-note p { color: var(--text-2); margin-bottom: 22px; }

@media (max-width: 640px) {
  .navbar { padding: 0 16px; }
  .container, .container-narrow { padding: 20px 14px 60px; }
  .fill-head { padding: 26px 20px; }
  .survey-grid { grid-template-columns: 1fr; }
}