:root {
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-6: 24px;

  --sidebar-width: 230px;
  --content-max-width: 1240px;

  --sidebar-bg: #171a23;
  --sidebar-bg-hover: #1f2330;
  --sidebar-text: #aeb4c4;
  --sidebar-text-active: #ffffff;
  --sidebar-accent: #4f6ef7;

  --content-bg: #f5f6f8;
  --card-bg: #ffffff;
  --card-border: #e6e8ee;
  --card-shadow: 0 1px 2px rgba(16, 20, 30, 0.04), 0 1px 8px rgba(16, 20, 30, 0.04);
  --card-radius: 10px;
  --field-radius: 8px;

  --text-primary: #1b1e27;
  --text-secondary: #6b7280;
  --text-muted: #9ca3af;
  --border-color: #e6e8ee;

  --btn-primary-bg: #4f6ef7;
  --btn-primary-bg-hover: #3d5ce0;
  --btn-danger-border: #dc2626;
  --btn-danger-text: #dc2626;

  --badge-ok-text: #16a34a;
  --badge-ok-bg: #e8f7ee;
  --badge-err-text: #dc2626;
  --badge-err-bg: #fdecec;
  --badge-run-text: #2563eb;
  --badge-run-bg: #e8effd;
  --badge-wait-text: #b45309;
  --badge-wait-bg: #fdf3e2;
  --badge-muted-text: #6b7280;
  --badge-muted-bg: #f0f1f4;

  --accent: #4f6ef7;
  --chart-1: #4f6ef7;
  --chart-2: #16a34a;
  --chart-3: #f59e0b;
  --chart-4: #8b5cf6;
  --chart-5: #06b6d4;
  --chart-6: #6b7280;

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-sans);
  font-size: 14px;
  color: var(--text-primary);
  background: var(--content-bg);
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

ul, ol {
  list-style: none;
  margin: 0;
  padding: 0;
}

button {
  font-family: inherit;
  font-size: inherit;
}

/* Layout */

.layout {
  display: flex;
  min-height: 100vh;
}

.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: var(--sidebar-width);
  background: var(--sidebar-bg);
  color: var(--sidebar-text);
  display: flex;
  flex-direction: column;
  padding: var(--space-4) 0;
}

.sidebar-brand {
  color: var(--sidebar-text-active);
  font-weight: 600;
  font-size: 15px;
  padding: 0 var(--space-4) var(--space-4);
}

.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  flex: 1;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-4);
  margin: 0 var(--space-2);
  border-radius: var(--field-radius);
  border-left: 3px solid transparent;
  color: var(--sidebar-text);
  cursor: pointer;
  background: none;
  border-top: none;
  border-right: none;
  border-bottom: none;
  width: calc(100% - var(--space-4));
  text-align: left;
}

.nav-item:hover {
  background: var(--sidebar-bg-hover);
  color: var(--sidebar-text-active);
}

.nav-item.active {
  background: var(--sidebar-bg-hover);
  color: var(--sidebar-text-active);
  border-left-color: var(--sidebar-accent);
}

.nav-icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.sidebar-logout {
  margin: 0;
}

.nav-logout {
  color: var(--sidebar-text);
}

.nav-logout:hover {
  color: var(--badge-err-text);
}

/* Content */

.content-area {
  margin-left: var(--sidebar-width);
  flex: 1;
  min-width: 0;
  padding: var(--space-6);
}

.content-header {
  max-width: var(--content-max-width);
  margin: 0 auto var(--space-4);
}

.page-title {
  font-size: 20px;
  font-weight: 600;
  margin: 0;
}

.content-main {
  max-width: var(--content-max-width);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

/* Toasts */

.toast-container {
  position: fixed;
  top: var(--space-4);
  right: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  z-index: 1000;
  max-width: 360px;
}

.toast {
  padding: var(--space-3) var(--space-4);
  border-radius: var(--field-radius);
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  box-shadow: var(--card-shadow);
  font-size: 13px;
}

.toast-ok {
  border-color: var(--badge-ok-text);
  background: var(--badge-ok-bg);
  color: var(--badge-ok-text);
}

.toast-error {
  border-color: var(--badge-err-text);
  background: var(--badge-err-bg);
  color: var(--badge-err-text);
}

/* Cards */

.card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--card-radius);
  box-shadow: var(--card-shadow);
  padding: var(--space-4);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-4);
}

.card-title {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.02em;
  margin: 0 0 var(--space-2);
}

.card-title-icon {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

a.card {
  display: block;
}

.card-value {
  font-size: 24px;
  font-weight: 700;
  margin: 0;
}

/* Tables */

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--card-border);
  border-radius: var(--card-radius);
  background: var(--card-bg);
}

table.table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

table.table thead th {
  position: sticky;
  top: 0;
  background: var(--card-bg);
  text-align: left;
  padding: var(--space-3) var(--space-3);
  border-bottom: 1px solid var(--card-border);
  color: var(--text-secondary);
  font-weight: 600;
  white-space: nowrap;
}

table.table tbody td {
  padding: var(--space-3);
  border-bottom: 1px solid var(--card-border);
  vertical-align: middle;
}

table.table tbody tr:last-child td {
  border-bottom: none;
}

table.table tbody tr:hover {
  background: var(--content-bg);
}

table.sortable th[data-sort] {
  cursor: pointer;
  user-select: none;
  position: relative;
  padding-right: calc(var(--space-3) + 12px);
}

table.sortable th[data-sort]:hover {
  color: var(--text-primary);
}

table.sortable th[data-sort]::after {
  position: absolute;
  right: var(--space-2);
  top: 50%;
  transform: translateY(-50%);
  font-size: 10px;
}

table.sortable th[data-sort-dir="asc"]::after {
  content: "▲";
}

table.sortable th[data-sort-dir="desc"]::after {
  content: "▼";
}

tr[data-href] {
  cursor: pointer;
}

.filter-input {
  max-width: 320px;
  margin-bottom: var(--space-3);
}

.mono {
  font-family: var(--font-mono);
  font-size: 12px;
}

/* Badges */

.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px var(--space-2);
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
}

.badge-ok {
  color: var(--badge-ok-text);
  background: var(--badge-ok-bg);
}

.badge-err {
  color: var(--badge-err-text);
  background: var(--badge-err-bg);
}

.badge-run {
  color: var(--badge-run-text);
  background: var(--badge-run-bg);
}

.badge-wait {
  color: var(--badge-wait-text);
  background: var(--badge-wait-bg);
}

.badge-muted {
  color: var(--badge-muted-text);
  background: var(--badge-muted-bg);
}

/* Buttons */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--field-radius);
  border: 1px solid transparent;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  background: var(--content-bg);
  color: var(--text-primary);
}

.btn-primary {
  background: var(--btn-primary-bg);
  color: #ffffff;
}

.btn-primary:hover {
  background: var(--btn-primary-bg-hover);
}

.btn-danger {
  background: transparent;
  border-color: var(--btn-danger-border);
  color: var(--btn-danger-text);
}

.btn-danger:hover {
  background: var(--badge-err-bg);
}

.btn-ghost {
  background: transparent;
  border-color: var(--card-border);
  color: var(--text-secondary);
}

.btn-ghost:hover {
  background: var(--content-bg);
}

/* Forms */

.field-label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: var(--space-1);
}

.field-input,
select.field-input,
textarea.field-input {
  width: 100%;
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--card-border);
  border-radius: var(--field-radius);
  font-size: 13px;
  font-family: inherit;
  color: var(--text-primary);
  background: var(--card-bg);
}

.field-input:focus {
  outline: none;
  border-color: var(--sidebar-accent);
  box-shadow: 0 0 0 2px rgba(79, 110, 247, 0.15);
}

.field-group {
  margin-bottom: var(--space-3);
}

.field-group:last-child {
  margin-bottom: 0;
}

/* Auth pages (login, error) */

.auth-body {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--sidebar-bg);
  padding: var(--space-4);
}

.auth-card {
  width: 100%;
  max-width: 340px;
  background: var(--card-bg);
  border-radius: var(--card-radius);
  box-shadow: var(--card-shadow);
  padding: var(--space-6);
  text-align: center;
}

.auth-brand {
  font-weight: 600;
  font-size: 16px;
  margin-bottom: var(--space-4);
}

.auth-form {
  text-align: left;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.auth-submit {
  width: 100%;
  margin-top: var(--space-1);
}

.auth-error {
  color: var(--badge-err-text);
  background: var(--badge-err-bg);
  border-radius: var(--field-radius);
  padding: var(--space-2) var(--space-3);
  font-size: 13px;
  margin: 0 0 var(--space-3);
}

.error-code {
  font-size: 40px;
  font-weight: 700;
  margin: 0 0 var(--space-2);
}

/* Detail layout */

.detail-layout {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--space-4);
  align-items: start;
}

.detail-main,
.detail-side {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  min-width: 0;
}

.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4);
}

/* Meta list */

.meta-list {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-2) var(--space-3);
  margin: 0;
}

.meta-list dt {
  color: var(--text-secondary);
  font-size: 12px;
  white-space: nowrap;
}

.meta-list dd {
  margin: 0;
}

/* Timeline */

.timeline {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.timeline-item {
  display: flex;
  gap: var(--space-3);
  font-size: 13px;
  padding-bottom: var(--space-2);
  border-bottom: 1px solid var(--card-border);
}

.timeline-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.timeline-time {
  color: var(--text-secondary);
  white-space: nowrap;
}

/* Lists */

.artifact-list,
.mini-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.artifact-list li {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding-bottom: var(--space-2);
  border-bottom: 1px solid var(--card-border);
}

.artifact-list li:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.artifact-list li > span:first-child {
  flex: 1;
}

.mini-list {
  font-size: 13px;
}

/* Notices and helper text */

.empty-note,
.text-muted {
  color: var(--text-secondary);
  font-size: 13px;
  margin: 0;
}

.notice-card p {
  margin: 0;
}

.field-hint {
  color: var(--text-secondary);
  font-size: 12px;
  margin: var(--space-1) 0 0;
}

.truncate {
  max-width: 320px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.prewrap {
  white-space: pre-wrap;
  word-break: break-word;
  font-family: var(--font-mono);
  font-size: 12px;
  background: var(--content-bg);
  border-radius: var(--field-radius);
  padding: var(--space-3);
  margin: var(--space-2) 0 0;
  max-height: 480px;
  overflow-y: auto;
}

.details-block {
  border-bottom: 1px solid var(--card-border);
  padding: var(--space-2) 0;
}

.details-block:last-child {
  border-bottom: none;
}

.details-block summary {
  cursor: pointer;
  font-weight: 600;
  font-size: 13px;
}

/* Forms and actions */

.filter-form {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: var(--space-3);
}

.filter-form .field-group {
  margin-bottom: 0;
  min-width: 180px;
}

.stacked-form .field-group {
  margin-bottom: var(--space-3);
}

.action-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

/* Table footer */

table.table tfoot td {
  padding: var(--space-3);
  border-top: 2px solid var(--card-border);
  font-weight: 600;
}

/* Pagination */

.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
}

.pagination-info {
  color: var(--text-secondary);
  font-size: 13px;
}

.btn-disabled {
  opacity: 0.5;
  cursor: default;
  pointer-events: none;
}

/* Tabs */

.tab-bar {
  display: flex;
  gap: var(--space-2);
}

.tab {
  padding: var(--space-2) var(--space-4);
  border-radius: var(--field-radius);
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 13px;
}

.tab:hover {
  background: var(--card-bg);
}

.tab-active {
  background: var(--card-bg);
  color: var(--text-primary);
  box-shadow: var(--card-shadow);
}

/* Charts */

.chart-svg {
  width: 100%;
  height: auto;
  display: block;
}

.chart-empty {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 80px;
  border: 1px dashed var(--card-border);
  border-radius: var(--field-radius);
  color: var(--text-secondary);
  font-size: 13px;
}

.chart-empty-inline {
  min-height: 32px;
}

.chart-axis-label,
.chart-heatmap-row-label,
.chart-heatmap-col-label {
  font-size: 9px;
  fill: var(--text-secondary);
}

.chart-hbar-label,
.chart-hbar-value {
  font-size: 12px;
  fill: var(--text-primary);
}

.chart-hbar-value {
  font-weight: 600;
}

.chart-donut-total {
  font-size: 20px;
  font-weight: 700;
  fill: var(--text-primary);
}

.chart-donut-caption {
  font-size: 9px;
  fill: var(--text-secondary);
}

.chart-donut {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.chart-donut-svg {
  max-width: 160px;
  flex-shrink: 0;
}

.chart-legend {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
  font-size: 13px;
  flex: 1;
  min-width: 140px;
}

.chart-legend li {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.chart-legend-swatch {
  width: 10px;
  height: 10px;
  border-radius: 2px;
  flex-shrink: 0;
}

.chart-legend-value {
  margin-left: auto;
  font-weight: 600;
}

/* Responsive */

@media (max-width: 920px) {
  .layout {
    flex-direction: column;
  }

  .sidebar {
    position: static;
    width: 100%;
    flex-direction: row;
    align-items: center;
    padding: var(--space-2);
    overflow-x: auto;
  }

  .sidebar-brand {
    padding: 0 var(--space-3);
    margin-bottom: 0;
    white-space: nowrap;
  }

  .sidebar-nav {
    flex-direction: row;
    overflow-x: auto;
  }

  .nav-item {
    width: auto;
    white-space: nowrap;
    border-left: none;
    border-bottom: 3px solid transparent;
  }

  .nav-item.active {
    border-left-color: transparent;
    border-bottom-color: var(--sidebar-accent);
  }

  .nav-item span {
    display: none;
  }

  .sidebar-logout {
    flex-shrink: 0;
  }

  .content-area {
    margin-left: 0;
    padding: var(--space-4);
  }

  .detail-layout,
  .two-col {
    grid-template-columns: 1fr;
  }
}