:root {
  color-scheme: dark;
  --bg: #090b12;
  --surface: #111622;
  --surface-strong: #171e2d;
  --surface-hover: #1d2637;
  --text: #eef2f7;
  --muted: #929db0;
  --line: rgba(255, 255, 255, 0.1);
  --line-strong: rgba(255, 255, 255, 0.18);
  --accent: #2bc7dc;
  --accent-strong: #65deed;
  --accent-ink: #04181c;
  --danger: #ff8f91;
  --success: #73dda7;
  --radius: 16px;
  --control-radius: 11px;
  font-family: "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--bg);
}

body {
  min-width: 320px;
  min-height: 100dvh;
  margin: 0;
  color: var(--text);
  background:
    radial-gradient(circle at 8% 0%, rgba(43, 199, 220, 0.1), transparent 26rem),
    var(--bg);
}

button,
input,
select {
  font: inherit;
}

button,
select {
  cursor: pointer;
}

button:focus-visible,
input:focus-visible,
select:focus-visible,
summary:focus-visible,
a:focus-visible {
  outline: 3px solid rgba(43, 199, 220, 0.45);
  outline-offset: 3px;
}

[hidden] {
  display: none !important;
}

.topbar {
  min-height: 68px;
  padding: 0 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  border-bottom: 1px solid var(--line);
  background: rgba(9, 11, 18, 0.88);
  backdrop-filter: blur(16px);
}

.brand {
  color: var(--text);
  font-size: 16px;
  font-weight: 850;
  letter-spacing: -0.02em;
  text-decoration: none;
}

.topbar-label {
  color: var(--muted);
  font-size: 13px;
}

.page-shell {
  width: min(1240px, calc(100% - 40px));
  margin: 0 auto;
  padding: 54px 0 92px;
}

.kicker {
  margin: 0 0 15px;
  color: var(--accent-strong);
  font-size: 13px;
  font-weight: 850;
  letter-spacing: 0.12em;
}

.login-layout {
  min-height: calc(100dvh - 214px);
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(340px, 0.75fr);
  align-items: center;
  gap: clamp(48px, 9vw, 120px);
}

.login-copy h1 {
  max-width: 15ch;
  margin: 0;
  font-size: clamp(40px, 5.4vw, 68px);
  line-height: 1.08;
  letter-spacing: -0.055em;
}

.login-copy > p:last-child {
  max-width: 38rem;
  margin: 24px 0 0;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.8;
}

.login-panel {
  padding: 32px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: 0 24px 80px rgba(2, 8, 14, 0.32);
}

.login-panel h2 {
  margin: 0;
  font-size: 24px;
  letter-spacing: -0.03em;
}

.login-panel > p {
  margin: 10px 0 26px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.65;
}

.login-panel label {
  display: block;
  margin-bottom: 9px;
  color: #ccd4df;
  font-size: 13px;
  font-weight: 800;
}

.login-panel input {
  width: 100%;
  min-height: 50px;
  padding: 12px 14px;
  color: var(--text);
  border: 1px solid var(--line-strong);
  border-radius: var(--control-radius);
  background: #0c111b;
}

.login-panel input:focus {
  border-color: var(--accent);
}

.login-panel button,
.button-primary,
.button-secondary,
.button-quiet {
  min-height: 44px;
  padding: 10px 17px;
  border-radius: var(--control-radius);
  font-weight: 850;
  transition: transform 140ms ease, background 140ms ease, border-color 140ms ease;
}

.login-panel button {
  width: 100%;
  margin-top: 10px;
  color: var(--accent-ink);
  border: 1px solid var(--accent);
  background: var(--accent);
}

.login-panel button:hover,
.button-primary:hover {
  background: var(--accent-strong);
}

.login-panel button:active,
.button-primary:active,
.button-secondary:active,
.button-quiet:active {
  transform: translateY(1px);
}

.login-panel button:disabled,
.header-actions button:disabled {
  cursor: wait;
  opacity: 0.65;
}

.form-error {
  min-height: 1.4em;
  margin: 10px 0 0 !important;
  color: var(--danger) !important;
  font-weight: 750;
}

.dashboard-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 28px;
  padding-bottom: 30px;
  border-bottom: 1px solid var(--line);
}

.dashboard-heading h1 {
  margin: 0;
  font-size: clamp(38px, 5vw, 62px);
  line-height: 1;
  letter-spacing: -0.055em;
}

.sync-line {
  margin: 17px 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  color: var(--muted);
  font-size: 13px;
}

.sync-line span + span::before {
  content: "/";
  margin-right: 16px;
  color: #586174;
}

.header-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 10px;
}

.button-primary {
  color: var(--accent-ink);
  border: 1px solid var(--accent);
  background: var(--accent);
}

.button-secondary,
.button-quiet {
  color: var(--text);
  border: 1px solid var(--line-strong);
  background: var(--surface);
}

.button-secondary:hover,
.button-quiet:hover {
  border-color: rgba(43, 199, 220, 0.48);
  background: var(--surface-hover);
}

.button-quiet {
  color: var(--muted);
  background: transparent;
}

.status-panel {
  margin-top: 22px;
  padding: 14px 17px;
  border: 1px solid rgba(43, 199, 220, 0.28);
  border-radius: var(--control-radius);
  color: #cceff4;
  background: rgba(43, 199, 220, 0.07);
  font-size: 13px;
}

.status-panel.is-error {
  border-color: rgba(255, 143, 145, 0.35);
  color: #ffd0d1;
  background: rgba(255, 143, 145, 0.07);
}

.role-tabs {
  margin: 30px 0 0;
  display: inline-grid;
  grid-template-columns: repeat(2, minmax(150px, 1fr));
  padding: 4px;
  border: 1px solid var(--line);
  border-radius: var(--control-radius);
  background: #0d121c;
}

.role-tabs button {
  min-height: 42px;
  padding: 8px 16px;
  color: var(--muted);
  border: 0;
  border-radius: 8px;
  background: transparent;
  font-weight: 800;
}

.role-tabs button[aria-pressed="true"] {
  color: var(--text);
  background: var(--surface-strong);
}

.role-tabs span {
  margin-left: 6px;
  color: var(--accent-strong);
  font-variant-numeric: tabular-nums;
}

.summary-grid {
  margin-top: 26px;
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr 1fr;
  gap: 1px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--line);
}

.metric {
  min-height: 144px;
  padding: 24px;
  background: var(--surface);
}

.metric:first-child {
  background: linear-gradient(145deg, rgba(43, 199, 220, 0.15), var(--surface) 66%);
}

.metric-label {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  font-weight: 750;
}

.metric-value {
  margin: 15px 0 0;
  color: var(--text);
  font-size: clamp(34px, 4vw, 50px);
  font-weight: 900;
  line-height: 1;
  letter-spacing: -0.045em;
  font-variant-numeric: tabular-nums;
}

.metric-note {
  margin: 12px 0 0;
  color: #788397;
  font-size: 12px;
}

.analysis-grid {
  margin-top: 26px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.analysis-panel,
.feedback-section,
.responses-section {
  padding: 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.analysis-wide {
  grid-column: 1 / -1;
}

.section-heading h2 {
  margin: 0;
  font-size: 20px;
  letter-spacing: -0.025em;
}

.section-heading p {
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 12px;
}

.bar-list {
  margin-top: 24px;
  display: grid;
  gap: 16px;
}

.bar-row {
  display: grid;
  grid-template-columns: minmax(88px, 1.1fr) minmax(120px, 2.4fr) 64px;
  align-items: center;
  gap: 14px;
}

.bar-label {
  color: #cbd3df;
  font-size: 13px;
}

.bar-track {
  height: 7px;
  overflow: hidden;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.07);
}

.bar-fill {
  height: 100%;
  border-radius: inherit;
  background: var(--accent);
  transform-origin: left center;
}

.bar-value {
  color: var(--muted);
  font-size: 12px;
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.feedback-section,
.responses-section {
  margin-top: 18px;
}

.comment-list {
  margin-top: 22px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.comment {
  min-height: 128px;
  padding: 19px;
  border: 1px solid var(--line);
  border-radius: var(--control-radius);
  background: #0d121c;
}

.comment blockquote {
  margin: 0;
  color: #dbe1ea;
  font-size: 14px;
  line-height: 1.75;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.comment-meta {
  margin: 14px 0 0;
  color: #697589;
  font-size: 11px;
}

.response-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 20px;
}

.response-filter {
  color: var(--muted);
  font-size: 12px;
}

.response-filter select {
  min-height: 38px;
  margin-left: 8px;
  padding: 7px 30px 7px 10px;
  color: var(--text);
  border: 1px solid var(--line-strong);
  border-radius: 9px;
  background: #0d121c;
}

.response-list {
  margin-top: 20px;
  display: grid;
  gap: 9px;
}

.response-item {
  border: 1px solid var(--line);
  border-radius: var(--control-radius);
  background: #0d121c;
}

.response-item summary {
  min-height: 58px;
  padding: 15px 17px;
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 16px;
  color: #dbe1ea;
  cursor: pointer;
  list-style: none;
}

.response-item summary::-webkit-details-marker {
  display: none;
}

.response-id {
  font-size: 13px;
  font-weight: 800;
}

.response-time {
  color: var(--muted);
  font-size: 12px;
  font-weight: 500;
}

.answer-list {
  margin: 0;
  padding: 0 17px 18px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px 24px;
}

.answer-row {
  padding-top: 12px;
  border-top: 1px solid var(--line);
}

.answer-row dt {
  color: #6f7a8e;
  font-size: 11px;
}

.answer-row dd {
  margin: 6px 0 0;
  color: #d5dce6;
  font-size: 13px;
  line-height: 1.6;
  overflow-wrap: anywhere;
}

.empty-state {
  padding: 30px 20px;
  color: var(--muted);
  border: 1px dashed var(--line-strong);
  border-radius: var(--control-radius);
  text-align: center;
  font-size: 13px;
}

@media (prefers-reduced-motion: no-preference) {
  .dashboard:not([hidden]) {
    animation: reveal 300ms cubic-bezier(0.16, 1, 0.3, 1) both;
  }

  @keyframes reveal {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
  }
}

@media (max-width: 980px) {
  .login-layout {
    grid-template-columns: 1fr;
    align-content: center;
  }

  .login-copy h1 {
    max-width: 18ch;
  }

  .login-panel {
    max-width: 560px;
  }

  .dashboard-heading {
    align-items: start;
    flex-direction: column;
  }

  .header-actions {
    justify-content: flex-start;
  }

  .summary-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 700px) {
  .topbar {
    min-height: 60px;
    padding: 0 18px;
  }

  .topbar-label {
    display: none;
  }

  .page-shell {
    width: min(100% - 28px, 1240px);
    padding: 34px 0 68px;
  }

  .login-layout {
    min-height: auto;
    gap: 34px;
  }

  .login-copy h1 {
    font-size: 39px;
  }

  .login-panel,
  .analysis-panel,
  .feedback-section,
  .responses-section {
    padding: 20px;
  }

  .header-actions {
    width: 100%;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .button-quiet {
    grid-column: 1 / -1;
  }

  .role-tabs {
    width: 100%;
  }

  .summary-grid,
  .analysis-grid,
  .comment-list,
  .answer-list {
    grid-template-columns: 1fr;
  }

  .analysis-wide {
    grid-column: auto;
  }

  .metric {
    min-height: 124px;
  }

  .bar-row {
    grid-template-columns: minmax(80px, 1fr) minmax(90px, 1.6fr) 55px;
    gap: 10px;
  }

  .response-heading {
    align-items: start;
    flex-direction: column;
  }

  .response-filter select {
    margin: 8px 0 0;
  }

  .response-item summary {
    grid-template-columns: 1fr;
    gap: 5px;
  }
}