/* ==========================================================================
   导航分组下拉 / 页内分区导航 / 招募问卷组件
   ========================================================================== */

/* ------------------------------------------------------------ 导航下拉 */
.nav-group { position: relative; }
.nav-group > button.nav-link { display: inline-flex; align-items: center; gap: 4px; }
.nav-group > button.nav-link .caret {
  width: 10px; height: 10px; transition: transform 0.3s var(--spring); opacity: 0.7;
}
.nav-group:hover > button.nav-link .caret,
.nav-group.open > button.nav-link .caret { transform: rotate(180deg); }
.nav-menu {
  position: absolute; top: calc(100% + 4px); left: 50%;
  min-width: 236px; padding: 8px; z-index: 70;
  background: color-mix(in srgb, var(--surface-solid) 96%, transparent);
  backdrop-filter: var(--glass-blur); -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--line); border-radius: 18px; box-shadow: var(--shadow-2);
  opacity: 0; visibility: hidden; transform: translate(-50%, -8px) scale(0.97);
  transition: opacity 0.24s var(--ease), transform 0.32s var(--spring), visibility 0.24s;
  transform-origin: top center;
}
.nav-group:hover .nav-menu,
.nav-group.open .nav-menu { opacity: 1; visibility: visible; transform: translate(-50%, 0) scale(1); }
.nav-menu a {
  display: flex; gap: 10px; align-items: flex-start; padding: 9px 10px; border-radius: 12px;
  color: var(--text); transition: background 0.2s var(--ease), transform 0.24s var(--spring);
}
.nav-menu a:hover { background: var(--surface-hover); transform: translateX(2px); }
.nav-menu a .mi { width: 20px; height: 20px; flex: none; color: var(--text-2); margin-top: 1px; }
.nav-menu a .mt { font-size: 13.5px; font-weight: 550; }
.nav-menu a .md { font-size: 11.5px; color: var(--text-3); line-height: 1.4; }
.nav-menu .sep { height: 1px; background: var(--line); margin: 6px 8px; }
.nav-menu .mh { font-size: 10.5px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-3); padding: 8px 10px 4px; }

/* ------------------------------------------------------------ 页内分区导航 */
.section-nav {
  position: sticky; top: calc(var(--nav-h) + 12px); z-index: 30;
  display: flex; gap: 4px; width: max-content; max-width: 100%;
  margin: 20px auto 0; padding: 5px; overflow-x: auto; scrollbar-width: none;
  border-radius: var(--r-pill); border: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  backdrop-filter: var(--glass-blur); -webkit-backdrop-filter: var(--glass-blur);
  box-shadow: var(--shadow-1);
  opacity: 0; animation: fadeDown 0.6s var(--spring) 0.1s both;
}
.section-nav::-webkit-scrollbar { display: none; }
.section-nav a {
  padding: 7px 13px; border-radius: var(--r-pill); font-size: 12.5px; font-weight: 550;
  color: var(--text-2); white-space: nowrap; transition: color 0.24s var(--ease), background 0.24s var(--ease);
}
.section-nav a:hover { color: var(--text); background: var(--surface-hover); }
.section-nav a.active { color: var(--text); background: var(--surface-solid); box-shadow: var(--shadow-1); }
.section-nav a .dot { display: inline-block; width: 5px; height: 5px; border-radius: 50%; background: var(--accent); margin-right: 6px; vertical-align: middle; opacity: 0; transition: opacity 0.3s var(--ease); }
.section-nav a.active .dot { opacity: 1; }
html[data-still] .section-nav { opacity: 1 !important; }

/* ------------------------------------------------------------ 分区标题 */
.zone { margin-top: 68px; scroll-margin-top: 132px; }
.zone-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 18px; margin-bottom: 22px; flex-wrap: wrap; }
.zone-head .l { display: flex; flex-direction: column; gap: 6px; }
.zone-no {
  font-family: var(--font-mono); font-size: 11.5px; letter-spacing: 0.22em; color: var(--accent);
  text-transform: uppercase;
}
.zone-head h2 { font-size: clamp(23px, 2.8vw, 31px); letter-spacing: -0.03em; }
.zone-head .desc { font-size: 14px; color: var(--text-2); max-width: 60ch; }

/* 数据条带 */
.stat-strip {
  display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1px;
  border-radius: var(--r-lg); overflow: hidden; border: 1px solid var(--line);
  background: var(--line); box-shadow: var(--shadow-1);
}
.stat-strip > div { background: var(--surface-solid); padding: 20px 22px; display: flex; flex-direction: column; gap: 4px; }
.stat-strip .k { font-size: 12px; color: var(--text-3); }
.stat-strip .v { font-size: 26px; font-weight: 650; letter-spacing: -0.03em; font-variant-numeric: tabular-nums; }
@media (max-width: 860px) { .stat-strip { grid-template-columns: repeat(2, minmax(0, 1fr)); } }

/* 流程三步 */
.flow { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.flow > div { position: relative; padding: 22px; border-radius: var(--r-lg); border: 1px solid var(--line); background: var(--surface-solid); }
.flow .n {
  width: 30px; height: 30px; border-radius: 50%; display: grid; place-items: center;
  background: var(--accent-soft); color: var(--accent); font-weight: 700; font-size: 13px; margin-bottom: 14px;
}
.flow h4 { font-size: 15.5px; margin-bottom: 6px; }
.flow p { font-size: 13px; color: var(--text-2); line-height: 1.65; }
@media (max-width: 820px) { .flow { grid-template-columns: 1fr; } }

/* FAQ */
.faq-item { border-bottom: 1px solid var(--line); }
.faq-item:last-child { border-bottom: none; }
.faq-q {
  width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 14px;
  padding: 16px 4px; font-size: 15px; font-weight: 560; text-align: left; color: var(--text);
  transition: color 0.2s var(--ease);
}
.faq-q:hover { color: var(--accent); }
.faq-q .pm { width: 18px; height: 18px; flex: none; color: var(--text-3); transition: transform 0.36s var(--spring), color 0.2s; }
.faq-item.open .faq-q .pm { transform: rotate(45deg); color: var(--accent); }
.faq-a {
  display: grid; grid-template-rows: 0fr; transition: grid-template-rows 0.42s var(--spring);
  overflow: hidden;
}
.faq-item.open .faq-a { grid-template-rows: 1fr; }
.faq-a > div { min-height: 0; overflow: hidden; }
.faq-a p { font-size: 13.5px; color: var(--text-2); line-height: 1.75; padding: 0 4px 18px; }

/* ------------------------------------------------------------ 问卷列表 */
.survey-card {
  display: flex; flex-direction: column; gap: 14px; overflow: hidden; position: relative;
  isolation: isolate;
}
.survey-card::before {
  content: ""; position: absolute; right: -70px; top: -90px; width: 210px; height: 210px; border-radius: 50%;
  background: radial-gradient(circle, color-mix(in srgb, var(--c, #0071e3) 26%, transparent), transparent 68%);
  z-index: -1; opacity: 0.85; transition: transform 0.6s var(--spring);
}
.survey-card:hover::before { transform: scale(1.14) translate(-6px, 8px); }
.survey-icon {
  width: 50px; height: 50px; border-radius: 15px; display: grid; place-items: center; font-size: 25px;
  background: color-mix(in srgb, var(--c, #0071e3) 14%, transparent);
  border: 1px solid color-mix(in srgb, var(--c, #0071e3) 24%, transparent);
  transition: transform 0.45s var(--spring);
}
.survey-card:hover .survey-icon { transform: rotate(-6deg) scale(1.06); }
.survey-meta { display: flex; flex-wrap: wrap; gap: 10px; font-size: 12px; color: var(--text-3); align-items: center; }
.survey-meta .m { display: inline-flex; align-items: center; gap: 4px; white-space: nowrap; }
.survey-meta .m svg { width: 13px; height: 13px; flex: none; opacity: 0.8; }
.pill svg { width: 13px; height: 13px; flex: none; }
.survey-state { display: inline-flex; align-items: center; gap: 6px; font-size: 12px; font-weight: 560; }

/* ------------------------------------------------------------ 问卷填写 */
.survey-head { display: flex; gap: 18px; align-items: flex-start; flex-wrap: wrap; }
.survey-progress {
  position: sticky; top: calc(var(--nav-h) + 10px); z-index: 25; display: flex; align-items: center; gap: 14px;
  padding: 12px 18px; border-radius: var(--r-pill); border: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg) 80%, transparent);
  backdrop-filter: var(--glass-blur); -webkit-backdrop-filter: var(--glass-blur);
  box-shadow: var(--shadow-1); margin: 18px 0 22px;
}
.survey-progress .bar { flex: 1; height: 6px; border-radius: 99px; background: var(--surface-hover); overflow: hidden; }
.survey-progress .bar i { display: block; height: 100%; width: 0; border-radius: 99px; background: linear-gradient(90deg, var(--accent), var(--accent-2)); transition: width 0.6s var(--spring); }
.survey-progress .num { font-size: 12.5px; color: var(--text-2); font-variant-numeric: tabular-nums; }

.q-block {
  padding: 22px; border-radius: var(--r-lg); border: 1px solid var(--line);
  background: var(--surface-solid); margin-bottom: 14px;
  transition: border-color 0.3s var(--ease), box-shadow 0.3s var(--ease);
}
.q-block:focus-within { border-color: color-mix(in srgb, var(--accent) 40%, var(--line)); box-shadow: var(--shadow-1); }
.q-block.has-err { border-color: var(--red); animation: shake 0.42s var(--ease) both; }
.q-title { font-size: 15.5px; font-weight: 600; display: flex; gap: 8px; align-items: baseline; line-height: 1.5; }
.q-no { font-family: var(--font-mono); font-size: 12px; color: var(--text-3); }
.q-req { color: var(--red); font-size: 10.5px; font-weight: 600; padding: 1px 7px; border-radius: 6px;
  background: rgba(255, 59, 48, 0.1); letter-spacing: 0.02em; flex: none; transform: translateY(-1px); }
.q-help { font-size: 12.5px; color: var(--text-3); margin-top: 6px; line-height: 1.6; }
.q-choices { display: flex; flex-direction: column; gap: 8px; margin-top: 14px; }
.q-choices.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); }
.choice {
  display: flex; gap: 10px; align-items: center; padding: 11px 14px; border-radius: 12px;
  border: 1px solid var(--line); background: transparent; text-align: left; cursor: pointer;
  font-size: 14px; color: var(--text); transition: all 0.22s var(--ease);
}
.choice:hover { border-color: var(--line-strong); background: var(--surface-hover); }
.choice.on { border-color: var(--accent); background: var(--accent-soft); color: var(--accent); }
.choice .box {
  width: 18px; height: 18px; flex: none; border-radius: 50%; border: 1.5px solid var(--line-strong);
  display: grid; place-items: center; transition: all 0.22s var(--spring);
}
.choice.multi .box { border-radius: 6px; }
.choice.on .box { border-color: var(--accent); background: var(--accent); }
.choice.on .box::after {
  content: ""; width: 5px; height: 9px; border: solid #fff; border-width: 0 2px 2px 0;
  transform: rotate(45deg) translate(-1px, -1px);
}
.choice.multi.on .box::after { transform: rotate(45deg) translate(-1px, -1px); }
.answer-ta { min-height: 104px; }
.word-count { text-align: right; font-size: 12px; color: var(--text-3); margin-top: 6px; font-variant-numeric: tabular-nums; }
.word-count.over { color: var(--red); }
.rating-row { display: flex; gap: 8px; margin-top: 14px; }
.rating-row button {
  width: 42px; height: 42px; border-radius: 12px; border: 1px solid var(--line); font-size: 14px;
  font-weight: 600; color: var(--text-2); transition: all 0.22s var(--spring); background: transparent;
}
.rating-row button:hover { transform: translateY(-2px); }
.rating-row button.on { background: var(--accent-soft); border-color: var(--accent); color: var(--accent); transform: scale(1.06); }

.survey-foot { display: flex; gap: 12px; align-items: center; justify-content: space-between; flex-wrap: wrap; margin-top: 26px; }
.unlock-box { max-width: 460px; margin: 46px auto; text-align: center; }
.invite-input {
  font-family: var(--font-mono); letter-spacing: 0.2em; text-align: center; text-transform: uppercase;
  font-size: 17px; height: 52px;
}

/* 答卷结果 */
.result-card { display: flex; gap: 18px; align-items: flex-start; flex-wrap: wrap; }
.result-ring { flex: none; }
.status-chip { display: inline-flex; align-items: center; gap: 6px; padding: 5px 12px; border-radius: 99px; font-size: 12.5px; font-weight: 600; }
.status-chip.wait { background: rgba(255, 149, 0, 0.14); color: #c97400; }
.status-chip.pass { background: rgba(52, 199, 89, 0.15); color: #1f9c46; }
.status-chip.fail { background: rgba(255, 59, 48, 0.13); color: #d92b21; }

/* ------------------------------------------------------------ 问卷编辑器 */
.editor-grid { display: grid; grid-template-columns: 1fr 300px; gap: var(--gap); align-items: start; }
@media (max-width: 980px) { .editor-grid { grid-template-columns: 1fr; } }
.editor-side { position: sticky; top: calc(var(--nav-h) + 14px); display: flex; flex-direction: column; gap: 14px; }
.q-editor {
  border: 1px solid var(--line); border-radius: var(--r-md); background: var(--surface-solid);
  padding: 16px; margin-bottom: 12px; display: flex; flex-direction: column; gap: 12px;
  transition: border-color 0.24s var(--ease), box-shadow 0.3s var(--ease), opacity 0.2s;
}
.q-editor:hover { border-color: var(--line-strong); }
.q-editor.fresh { animation: springUp 0.5s var(--spring) both; }
.q-editor.dragging { opacity: 0.45; }
.q-row { display: flex; gap: 10px; align-items: center; }
.q-row .grow { min-width: 0; }
.q-handle {
  width: 26px; height: 30px; display: grid; place-items: center; color: var(--text-3); cursor: grab;
  border-radius: 8px; font-size: 13px;
}
.q-handle:hover { background: var(--surface-hover); color: var(--text); }
.q-type-chip { font-size: 11px; padding: 3px 9px; border-radius: 7px; background: var(--surface-hover); color: var(--text-2); white-space: nowrap; }
.opt-row { display: flex; gap: 8px; align-items: center; }
.opt-row .input { height: 34px; font-size: 13.5px; }
.opt-row .icon-btn { width: 28px; height: 28px; }
.mini-label { font-size: 11.5px; color: var(--text-3); }
.add-q {
  width: 100%; border: 1.5px dashed var(--line-strong); border-radius: var(--r-md); padding: 14px;
  color: var(--text-2); font-size: 13.5px; background: transparent; transition: all 0.26s var(--ease);
}
.add-q:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-soft); }
.invite-code {
  font-family: var(--font-mono); font-size: 15px; letter-spacing: 0.12em; font-weight: 600;
  padding: 8px 12px; border-radius: 10px; background: var(--surface-hover); border: 1px solid var(--line);
}
.invite-row { display: flex; align-items: center; gap: 10px; padding: 10px 0; border-bottom: 1px dashed var(--line); }
.invite-row:last-child { border-bottom: none; }

/* 提交成功撒花 */
.confetti { position: fixed; inset: 0; pointer-events: none; z-index: 130; overflow: hidden; }
.confetti i {
  position: absolute; width: 8px; height: 12px; border-radius: 2px; opacity: 0.9;
  animation: confettiFall var(--dur, 2.4s) linear forwards; animation-delay: var(--delay, 0s);
}
@keyframes confettiFall {
  0% { transform: translate3d(0, -10vh, 0) rotate(0deg); opacity: 1; }
  100% { transform: translate3d(var(--drift, 40px), 105vh, 0) rotate(720deg); opacity: 0; }
}

/* 注册页问卷弹窗 */
.register-survey-overlay{position:fixed;inset:0;z-index:9999;display:flex;align-items:center;justify-content:center;padding:20px;background:rgba(8,12,20,.68);backdrop-filter:blur(8px)}
.register-survey-dialog{width:min(820px,100%);max-height:min(90vh,900px);display:flex;flex-direction:column;overflow:hidden;border:1px solid var(--line);border-radius:22px;background:var(--surface);box-shadow:0 28px 90px rgba(0,0,0,.35)}
.register-survey-dialog>header{display:flex;align-items:flex-start;justify-content:space-between;gap:18px;padding:22px 24px;border-bottom:1px solid var(--line)}
.register-survey-dialog h2{margin:5px 0;font-size:22px}.register-survey-dialog header p{margin:6px 0 0;color:var(--text-2);font-size:13px;line-height:1.6}
.register-survey-dialog form{min-height:0;display:flex;flex-direction:column}.register-survey-body{overflow:auto;padding:18px 24px;min-height:120px}.register-survey-question{padding:14px 0;border-bottom:1px solid var(--line)}.register-survey-question:last-child{border-bottom:0}.register-survey-dialog footer{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:16px 24px;border-top:1px solid var(--line)}.register-survey-options{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:10px;margin-top:12px}.survey-select{font-weight:600;min-height:48px;border-radius:12px;cursor:pointer}.survey-select option{padding:12px}@media(max-width:600px){.register-survey-overlay{padding:8px}.register-survey-dialog{max-height:94vh;border-radius:16px}.register-survey-dialog>header,.register-survey-body,.register-survey-dialog footer{padding-left:15px;padding-right:15px}.register-survey-dialog footer{align-items:flex-start;flex-direction:column}}