:root {
  --bg: #f5f6f8;
  --surface: #ffffff;
  --surface-soft: #fafbfc;
  --line: #e8ebf0;
  --line-strong: #d8dde6;
  --text: #111827;
  --muted: #6b7280;
  --accent: #111827;
  --accent-soft: #eef2f7;
  --blue: #315efb;
  --teal: #0f766e;
  --violet: #7c3aed;
  --orange: #ea580c;
  --shadow: 0 10px 30px rgba(17, 24, 39, 0.04);
}

* {
  box-sizing: border-box;
}

html {
  color-scheme: light;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, "Segoe UI", "PingFang SC", "Hiragino Sans GB", sans-serif;
  color: var(--text);
  background: linear-gradient(180deg, #fafafa 0%, #f4f5f7 100%);
}

button,
select,
input,
textarea {
  font: inherit;
}

button {
  border: 0;
  background: none;
}

.app-shell {
  display: grid;
  grid-template-columns: 288px minmax(0, 1fr);
  min-height: 100vh;
  transition: grid-template-columns 180ms ease;
}

.app-shell.sidebar-collapsed {
  grid-template-columns: 88px minmax(0, 1fr);
}

.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  display: flex;
  flex-direction: column;
  gap: 28px;
  padding: 24px 20px;
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(18px);
  border-right: 1px solid rgba(17, 24, 39, 0.06);
  transition: width 180ms ease, padding 180ms ease;
}

.sidebar-top {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr) 36px;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 14px;
  background: #111827;
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.08em;
}

.brand-copy {
  min-width: 0;
}

.brand-kicker,
.sidebar-label,
.eyebrow,
.section-kicker,
.status-label,
.nav-index {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #8a94a6;
}

.brand-copy strong {
  display: block;
  margin-top: 6px;
  font-size: 16px;
  letter-spacing: -0.02em;
}

.sidebar-toggle {
  position: relative;
  display: grid;
  gap: 5px;
  align-content: center;
  width: 36px;
  height: 36px;
  padding: 0;
  border-radius: 12px;
  cursor: pointer;
  color: var(--text);
}

.sidebar-toggle span {
  display: block;
  width: 16px;
  height: 1.5px;
  margin: 0 auto;
  background: currentColor;
  border-radius: 999px;
}

.sidebar-section,
.sidebar-foot {
  display: grid;
  gap: 12px;
}

.sidebar-foot {
  margin-top: auto;
  width: min(100%, 180px);
}

.sidebar-nav {
  display: grid;
  gap: 6px;
}

.tab-button {
  display: grid;
  grid-template-columns: 28px minmax(0, 1fr);
  align-items: start;
  gap: 14px;
  width: 100%;
  padding: 14px 12px;
  border-radius: 16px;
  color: #374151;
  text-align: left;
  cursor: pointer;
  transition: background 160ms ease, color 160ms ease;
}

.tab-button:hover {
  background: rgba(17, 24, 39, 0.04);
}

.tab-button.active {
  background: #f3f5f8;
  color: #111827;
}

.nav-copy {
  display: grid;
  gap: 4px;
  min-width: 0;
}

.nav-copy strong {
  font-size: 14px;
  font-weight: 600;
}

.nav-copy small {
  color: var(--muted);
  line-height: 1.5;
}

.status-card {
  display: grid;
  gap: 8px;
  width: 100%;
  padding: 14px 16px;
  border-radius: 18px;
  background: rgba(17, 24, 39, 0.03);
}

.status-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.status-version {
  display: block;
  margin-top: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  letter-spacing: -0.02em;
}

.status-dot {
  width: 10px;
  height: 10px;
  margin-top: 4px;
  border-radius: 999px;
  flex: 0 0 auto;
  background: #d1d5db;
  box-shadow: 0 0 0 4px rgba(17, 24, 39, 0.06);
}

.status-dot.ok {
  background: #16a34a;
  box-shadow: 0 0 0 4px rgba(22, 163, 74, 0.14);
}

.status-dot.bad {
  background: #dc2626;
  box-shadow: 0 0 0 4px rgba(220, 38, 38, 0.14);
}

.main-shell {
  padding: 32px 40px 56px;
}

.hero {
  padding: 12px 0 32px;
}

.hero-copy-wrap {
  max-width: 820px;
}

.hero h1 {
  margin: 12px 0 0;
  font-size: clamp(40px, 5vw, 64px);
  line-height: 1;
  letter-spacing: -0.05em;
  font-weight: 600;
}

.hero-copy {
  margin: 18px 0 0;
  max-width: 720px;
  color: var(--muted);
  font-size: 16px;
  line-height: 1.8;
}

.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
}

.panel-header {
  margin-bottom: 28px;
}

.panel-header h2,
.card-heading h3,
.chart-header h3 {
  margin: 10px 0 0;
  font-size: clamp(24px, 2.3vw, 34px);
  line-height: 1.15;
  letter-spacing: -0.04em;
  font-weight: 600;
}

.panel-header p,
.card-heading p {
  margin: 10px 0 0;
  max-width: 780px;
  color: var(--muted);
  line-height: 1.75;
}

.controls-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 18px;
  margin-bottom: 28px;
}

.control-field {
  display: grid;
  gap: 10px;
}

.control-field span {
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #8a94a6;
}

select {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid transparent;
  border-radius: 14px;
  background: var(--surface);
  color: var(--text);
  box-shadow: 0 1px 2px rgba(17, 24, 39, 0.04);
  outline: none;
}

select:focus {
  border-color: #d6dbe5;
}

.stats {
  display: flex;
  gap: 0;
  margin-bottom: 26px;
}

.stats-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  width: 100%;
}

.stat-card {
  flex: 1;
  min-width: 160px;
  padding: 16px 20px;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.72);
}

/* removed stat-card-wide */

.stat-card span {
  display: block;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: #8a94a6;
}

.stat-card strong {
  display: block;
  margin-top: 10px;
  font-size: 28px;
  font-weight: 600;
  letter-spacing: -0.04em;
}

.stat-value-layer {
  font-size: 18px;
  line-height: 1.5;
  letter-spacing: -0.02em;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.charts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
  gap: 16px;
}

.chart-card,
.table-card {
  background: rgba(255, 255, 255, 0.84);
  border-radius: 22px;
  box-shadow: var(--shadow);
}

.chart-card {
  padding: 18px;
}

.chart-header {
  margin-bottom: 12px;
}

.chart-header h3 {
  margin-top: 0;
  font-size: 20px;
}

canvas {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 16px;
  background: #fff;
}

.table-card {
  margin-top: 24px;
  padding: 20px;
}

.card-heading {
  margin-bottom: 12px;
}

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

table {
  width: 100%;
  border-collapse: collapse;
  background: transparent;
}

th,
td {
  padding: 14px 10px;
  text-align: left;
  border-bottom: 1px solid #edf1f5;
  font-size: 14px;
}

th {
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #8a94a6;
}

.empty-state,
.empty-cell {
  padding: 28px 12px;
  color: var(--muted);
  text-align: center;
}

.empty-state {
  display: grid;
  place-items: center;
  min-height: 220px;
  border-radius: 22px;
  background: rgba(255, 255, 255, 0.7);
}

.loading-state {
  color: #4b5563;
}

.error-state {
  color: #b91c1c;
}

.sidebar.collapsed {
  width: 88px;
  padding-inline: 14px;
}

.sidebar.collapsed .brand-copy,
.sidebar.collapsed .sidebar-label,
.sidebar.collapsed .nav-copy,
.sidebar.collapsed .status-card {
  display: none;
}

.sidebar.collapsed .sidebar-top {
  grid-template-columns: 44px 1fr;
}

.sidebar.collapsed .sidebar-toggle {
  justify-self: end;
}

.sidebar.collapsed .tab-button {
  grid-template-columns: 1fr;
  justify-items: center;
  padding: 14px 8px;
}

.sidebar.collapsed .nav-index {
  color: #6b7280;
}

@media (max-width: 1080px) {
  .app-shell {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: sticky;
    z-index: 10;
    height: auto;
    border-right: 0;
    border-bottom: 1px solid rgba(17, 24, 39, 0.06);
  }

  .sidebar.collapsed {
    width: auto;
  }

  .sidebar.collapsed .brand-copy,
  .sidebar.collapsed .sidebar-label,
  .sidebar.collapsed .nav-copy,
  .sidebar.collapsed .status-card {
    display: initial;
  }

  .sidebar.collapsed .tab-button {
    grid-template-columns: 28px minmax(0, 1fr);
    justify-items: stretch;
    padding: 14px 12px;
  }

  .sidebar-foot {
    width: 100%;
  }

  .main-shell {
    padding: 28px 20px 40px;
  }
}

@media (max-width: 760px) {
  .sidebar {
    gap: 18px;
    padding: 18px 16px;
  }

  .sidebar-top {
    grid-template-columns: 44px minmax(0, 1fr) 36px;
  }

  .hero h1 {
    font-size: 38px;
  }

  .charts-grid {
    grid-template-columns: 1fr;
  }

  .chart-card,
  .table-card,
  .stat-card,
  .status-card {
    border-radius: 18px;
  }
}