:root {
  --bg: #f5f7fa;
  --panel: #ffffff;
  --line: #dde3ea;
  --text: #16202a;
  --muted: #627182;
  --accent: #0f6cbd;
  --accent-soft: #dcecff;
  --success: #0b8f55;
  --warning: #b7791f;
  --shadow: 0 18px 48px rgba(16, 36, 59, 0.08);
  --radius: 18px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top right, #dcecff 0, transparent 30%),
    linear-gradient(180deg, #f9fbfd 0%, var(--bg) 100%);
}

body.dark-theme {
  --bg: #0d141b;
  --panel: #13202a;
  --line: #26404f;
  --text: #e8f1f7;
  --muted: #9fb1bf;
  --accent: #5ea6e8;
  --accent-soft: #1a3850;
  --success: #46c489;
  --warning: #f0b050;
  --shadow: 0 18px 48px rgba(0, 0, 0, 0.28);
  background:
    radial-gradient(circle at top right, rgba(94, 166, 232, 0.12) 0, transparent 30%),
    linear-gradient(180deg, #0a1015 0%, var(--bg) 100%);
}

.app-shell {
  width: min(1560px, calc(100vw - 24px));
  margin: 32px auto 64px;
}

.hero-card,
.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.hero-card {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 28px;
  margin-bottom: 20px;
}

.eyebrow {
  margin: 0 0 8px;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
}

h1,
h2 {
  margin: 0;
}

.hero-copy {
  max-width: 720px;
  color: var(--muted);
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  flex-wrap: wrap;
}

.auth-gate {
  max-width: 620px;
  margin: 0 auto 20px;
}

.auth-copy {
  margin: 0 0 16px;
  color: var(--muted);
  line-height: 1.7;
}

.auth-form {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.auth-form label {
  display: flex;
  flex-direction: column;
  gap: 8px;
  color: var(--muted);
  font-size: 14px;
}

.auth-form input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px 14px;
  font-size: 14px;
  background: #fff;
  color: var(--text);
  font-family: inherit;
}

.auth-message {
  min-height: 22px;
  margin: 14px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  border: 0;
  border-radius: 999px;
  padding: 12px 18px;
  background: var(--accent);
  color: #fff;
  cursor: pointer;
  font-size: 14px;
}

.button-secondary {
  background: #e9eef5;
  color: var(--text);
}

.grid.two-up {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
  margin-bottom: 20px;
}

.panel {
  padding: 20px;
  margin-bottom: 20px;
}

.hidden {
  display: none !important;
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.panel-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.badge {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 0 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
}

.badge-muted {
  background: #edf1f5;
  color: var(--muted);
}

.badge-accent {
  background: var(--accent-soft);
  color: var(--accent);
}

.badge-success {
  background: #dff5ea;
  color: var(--success);
}

.badge-warning {
  background: #fff1d9;
  color: var(--warning);
}

.code-block {
  margin: 0;
  padding: 16px;
  border-radius: 14px;
  background: #0e1621;
  color: #d9ebff;
  overflow: auto;
  min-height: 180px;
}

.feature-list {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
  line-height: 1.8;
}

.subheading {
  margin: 0 0 14px;
  font-size: 18px;
}

.source-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
}

.source-card {
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 16px;
  background: linear-gradient(180deg, #fff, #f9fbfd);
}

.source-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.source-card h3 {
  margin: 0 0 8px;
  font-size: 18px;
}

.source-meta {
  margin: 0;
  color: var(--muted);
  line-height: 1.7;
  font-size: 14px;
}

.source-card-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.source-delete-button {
  background: #fce8e6;
  color: #b3261e;
}

.empty-state {
  color: var(--muted);
  padding: 24px;
  border: 1px dashed var(--line);
  border-radius: 16px;
}

.query-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.query-grid label {
  display: flex;
  flex-direction: column;
  gap: 8px;
  color: var(--muted);
  font-size: 14px;
}

.query-time-start {
  grid-column: 1 / span 1;
  grid-row: 3;
}

.query-time-end {
  grid-column: 2 / span 1;
  grid-row: 3;
}

.stack-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.stack-form label {
  display: flex;
  flex-direction: column;
  gap: 8px;
  color: var(--muted);
  font-size: 14px;
}

.query-grid input,
.query-grid select,
.stack-form input,
.stack-form textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px 14px;
  font-size: 14px;
  background: #fff;
  color: var(--text);
  font-family: inherit;
}

.query-actions {
  display: flex;
  grid-column: 3 / span 2;
  grid-row: 3;
  align-items: end;
  gap: 12px;
  flex-wrap: wrap;
}

.inline-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.column-settings {
  margin-top: 16px;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px 16px;
  padding: 14px;
  border: 1px dashed var(--line);
  border-radius: 14px;
  background: #f8fbfd;
}

.column-settings label {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 14px;
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 16px;
  margin-bottom: 20px;
}

.charts-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.chart-card {
  border: 1px solid var(--line);
  border-radius: 16px;
  background: linear-gradient(180deg, #ffffff, #f8fbfd);
  padding: 16px;
}

.chart-box {
  min-height: 240px;
  border: 1px dashed var(--line);
  border-radius: 14px;
  padding: 12px;
  color: var(--muted);
}

.chart-empty {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 214px;
  color: var(--muted);
}

.line-chart-svg {
  width: 100%;
  height: 220px;
  overflow: visible;
}

.chart-axis {
  stroke: #cdd7e1;
  stroke-width: 1;
}

.chart-line {
  fill: none;
  stroke: var(--accent);
  stroke-width: 3;
}

.chart-point {
  fill: var(--accent);
}

.chart-label {
  fill: var(--muted);
  font-size: 11px;
}

.stack-chart {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.stack-row {
  display: grid;
  grid-template-columns: 112px 1fr 68px;
  gap: 10px;
  align-items: center;
}

.stack-label {
  color: var(--muted);
  font-size: 12px;
}

.stack-track {
  display: flex;
  height: 18px;
  border-radius: 999px;
  overflow: hidden;
  background: #eef3f7;
}

.stack-segment-input {
  background: #0f6cbd;
}

.stack-segment-output {
  background: #de5c3f;
}

.stack-segment-cache-read {
  background: #37a774;
}

.stack-segment-cache-write {
  background: #c08a24;
}

.stack-segment-fixed {
  background: #8c62d6;
}

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

.ranking-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.ranking-item {
  display: grid;
  grid-template-columns: 140px 1fr 80px;
  gap: 10px;
  align-items: center;
  cursor: pointer;
}

.ranking-name {
  color: var(--text);
  font-size: 13px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.ranking-bar {
  height: 16px;
  background: #ebf2fa;
  border-radius: 999px;
  overflow: hidden;
}

.ranking-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), #69a9e7);
  border-radius: 999px;
}

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

.summary-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 18px 20px;
  border-radius: 16px;
  background: linear-gradient(180deg, #ffffff, #f4f8fc);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

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

.summary-card strong {
  font-size: 28px;
  font-weight: 700;
}

.table-wrap {
  overflow-x: auto;
}

.result-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 1320px;
}

.result-table th,
.result-table td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  font-size: 14px;
  white-space: nowrap;
}

.result-table th {
  position: sticky;
  top: 0;
  background: #f7fafc;
  z-index: 1;
}

.sort-button {
  border: 0;
  background: transparent;
  color: inherit;
  font: inherit;
  cursor: pointer;
  padding: 0;
  white-space: nowrap;
}

.result-table td.numeric {
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.cell-zero {
  color: var(--muted);
}

.cell-empty {
  color: #98a7b8;
}

.table-empty {
  text-align: center;
  color: var(--muted);
}

.totals-row td {
  background: #f9fbfd;
  font-weight: 600;
}

.pagination-bar {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 16px;
}

.page-size-label {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 14px;
}

.page-size-label select {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 8px 10px;
  background: #fff;
  color: var(--text);
}

.compact-code {
  min-height: 96px;
  margin-top: 16px;
}

@media (max-width: 820px) {
  .hero-card {
    flex-direction: column;
  }

  .auth-form,
  .grid.two-up,
  .query-grid,
  .summary-grid,
  .charts-grid,
  .column-settings {
    grid-template-columns: 1fr;
  }

  .query-time-start,
  .query-time-end,
  .query-actions {
    grid-column: auto;
  }

  .ranking-item,
  .stack-row {
    grid-template-columns: 1fr;
  }

  .hero-actions .button,
  .query-actions .button,
  .query-actions a,
  .panel-actions .button {
    width: 100%;
  }
}