/* RAGCore admin -- "Knowledge Infrastructure" design system.
   Dark enterprise surface: deep graphite/navy ground, teal/cyan accent,
   semantic status colors kept distinct from the accent hue. */

:root {
  /* Exact values from RAGCore-Stitch-Redesign/04_DESIGN_SYSTEM.md's
     "Suggested color tokens" -- the 4-layer model (Canvas / Sidebar /
     Surface / Raised surface) is deliberate, not a naming accident: the
     sidebar is its own distinct tone, not a re-use of the card surface. */
  --bg: #0b1020;
  --sidebar-bg: #0e1628;
  --surface: #121c2f;
  --surface-2: #17243a;
  --surface-3: #1c2c47;
  --border: #263752;
  --text: #f3f7fb;
  --text-muted: #a7b5c8;
  --accent: #4fd1c5;
  --accent-strong: #67e3d7;
  --accent-ink: #06211e;
  --success: #45d483;
  --warning: #f4be4f;
  --critical: #f26d78;
  --focus: #f8d66d;

  --radius-sm: 8px;
  --radius: 10px;
  --radius-lg: 12px;

  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2rem;

  --sidebar-w: 264px;
  --topbar-h: 64px;

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

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.55 var(--font-sans);
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3 {
  line-height: 1.25;
  text-wrap: balance;
}

a {
  color: var(--accent);
}

.mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
summary:focus-visible,
label.nav-toggle-btn:focus-visible {
  outline: 0.2rem solid var(--focus);
  outline-offset: 0.15rem;
}

.skip-link {
  position: absolute;
  left: -9999px;
  padding: var(--space-1);
  background: var(--focus);
  color: #111;
  z-index: 100;
}
.skip-link:focus {
  left: var(--space-2);
  top: var(--space-2);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ---------- App shell: sidebar + topbar ---------- */

.nav-toggle-input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.shell-layout {
  display: grid;
  grid-template-columns: var(--sidebar-w) 1fr;
  min-height: 100vh;
}

.sidebar {
  background: var(--sidebar-bg);
  border-right: 1px solid var(--border);
  padding: var(--space-3) var(--space-2);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.icon {
  width: 1.1rem;
  height: 1.1rem;
  flex-shrink: 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  color: var(--text);
  text-decoration: none;
  padding: var(--space-1);
}
.brand-mark {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.1rem;
  height: 2.1rem;
  flex-shrink: 0;
  border-radius: var(--radius-sm);
  background: linear-gradient(155deg, var(--accent) 0%, var(--accent-strong) 100%);
  color: var(--accent-ink);
}
.brand-mark .icon {
  width: 1.25rem;
  height: 1.25rem;
}
.brand-text {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  font-weight: 700;
  font-size: 1.05rem;
  line-height: 1.1;
}
.brand-text span {
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

nav[aria-label="Primary navigation"] {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--text-muted);
  text-decoration: none;
  padding: 0.6rem var(--space-1);
  border-radius: var(--radius-sm);
  font-weight: 550;
  border-left: 3px solid transparent;
}
.nav-link .icon {
  color: var(--text-muted);
}
.nav-link:hover {
  background: var(--surface-2);
  color: var(--text);
}
.nav-link.is-active {
  background: var(--surface-2);
  color: var(--text);
  border-left-color: var(--accent);
}
.nav-link.is-active .icon,
.nav-link:hover .icon {
  color: var(--accent);
}

.nav-scrim {
  display: none;
}

.shell-body {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.topbar {
  min-height: var(--topbar-h);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-3);
  background: var(--sidebar-bg);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 10;
}

.nav-toggle-btn {
  display: none;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  cursor: pointer;
  border-radius: var(--radius-sm);
  color: var(--text);
}
.nav-toggle-btn .icon {
  width: 1.35rem;
  height: 1.35rem;
}

.topbar-breadcrumb {
  flex: 1;
  min-width: 0;
}
.topbar-breadcrumb h1 {
  margin: 0;
  font-size: 1.9rem;
  font-weight: 650;
  letter-spacing: -0.01em;
}
.eyebrow {
  margin: 0;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.72rem;
  font-weight: 650;
}

.breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.35rem;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 0.78rem;
}
.breadcrumb li {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  color: var(--text-muted);
}
.breadcrumb li:not(:last-child)::after {
  content: "/";
  color: var(--border);
}
.breadcrumb a {
  color: var(--text-muted);
  text-decoration: none;
}
.breadcrumb a:hover {
  color: var(--text);
  text-decoration: underline;
}
.breadcrumb [aria-current="page"] {
  color: var(--text);
  font-weight: 600;
}

.user-menu {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-shrink: 0;
  padding-left: var(--space-2);
  border-left: 1px solid var(--border);
}
.user-avatar {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  flex-shrink: 0;
  border-radius: 50%;
  background: var(--surface-3);
  color: var(--text-muted);
}
.user-avatar .icon {
  width: 1.05rem;
  height: 1.05rem;
}
.user-details {
  display: flex;
  flex-direction: column;
  gap: 0.05rem;
  line-height: 1.2;
}
.user-role {
  color: var(--text);
  font-size: 0.82rem;
  font-weight: 600;
}
.user-id {
  color: var(--text-muted);
  font-size: 0.72rem;
}
.signout-form {
  margin: 0;
}
.signout-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-muted);
  border-radius: var(--radius-sm);
  cursor: pointer;
}
.signout-btn:hover {
  color: var(--critical);
  border-color: var(--critical);
}

.shell {
  width: min(1200px, 100%);
  padding: var(--space-4) var(--space-3);
  margin: 0 auto;
  flex: 1;
}

@media (max-width: 960px) {
  .shell-layout {
    grid-template-columns: 1fr;
  }
  .sidebar {
    position: fixed;
    inset: 0 auto 0 0;
    width: min(84vw, 320px);
    z-index: 40;
    transform: translateX(-100%);
    transition: transform 0.2s ease;
    box-shadow: 0.5rem 0 1.5rem rgba(0, 0, 0, 0.4);
  }
  .nav-toggle-btn {
    display: flex;
  }
  .nav-toggle-input:checked ~ .shell-layout .sidebar {
    transform: translateX(0);
  }
  .nav-scrim {
    display: block;
    position: fixed;
    inset: 0;
    background: rgba(5, 8, 16, 0.55);
    z-index: 30;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease;
  }
  .nav-toggle-input:checked ~ .nav-scrim {
    opacity: 1;
    pointer-events: auto;
  }
  .shell {
    padding: var(--space-3) var(--space-2);
  }
  .topbar-breadcrumb h1 {
    font-size: 1.6rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .sidebar,
  .nav-scrim {
    transition: none !important;
  }
}

/* ---------- Bare shell (login) ---------- */

body.bare {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}
.bare-shell {
  width: min(420px, 92vw);
  padding: var(--space-3) 0;
}
.login-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  text-align: center;
}
.login-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  margin-bottom: var(--space-2);
  border-radius: var(--radius);
  background: linear-gradient(155deg, var(--accent) 0%, var(--accent-strong) 100%);
  color: var(--accent-ink);
}
.login-mark .icon {
  width: 1.75rem;
  height: 1.75rem;
}
.login-brand {
  font-weight: 700;
  font-size: 1.3rem;
  margin: 0 0 0.15rem;
}
.login-brand span {
  display: block;
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-top: 0.25rem;
}
.login-copy {
  color: var(--text-muted);
  margin: var(--space-2) 0 var(--space-3);
}

/* ---------- Content primitives ---------- */

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-3);
}
.panel + .panel {
  margin-top: var(--space-2);
}
.panel-heading {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.notice {
  color: var(--text-muted);
}
.notice:not(:last-child) {
  margin-bottom: var(--space-3);
}
.help {
  color: var(--text-muted);
  font-size: 0.85rem;
}

.table-wrap {
  overflow-x: auto;
}
table {
  width: 100%;
  border-collapse: collapse;
}
th,
td {
  padding: 0.75rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
th {
  color: var(--text-muted);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 650;
}
tbody th[scope="row"] {
  color: var(--text);
  text-transform: none;
  letter-spacing: normal;
  font-size: inherit;
}

.status {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 600;
  background: var(--surface-3);
}
.status::before {
  content: "";
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background: currentColor;
}
.status-active {
  color: var(--success);
}
.status-disabled {
  color: var(--critical);
}

.button {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  border: 0;
  border-radius: var(--radius-sm);
  padding: 0.65rem 1.1rem;
  background: var(--accent);
  color: var(--accent-ink);
  font-weight: 650;
  cursor: pointer;
  text-decoration: none;
  font-size: 0.9rem;
}
.button:hover {
  background: var(--accent-strong);
}
.button-secondary {
  background: var(--surface-3);
  color: var(--text);
}
.button-secondary:hover {
  background: var(--border);
}
.button-block {
  display: flex;
  justify-content: center;
  width: 100%;
}

.field,
.field-group {
  margin-bottom: var(--space-3);
}
label,
legend {
  font-weight: 650;
  font-size: 0.9rem;
}
input,
textarea {
  display: block;
  width: 100%;
  margin-top: 0.35rem;
  padding: 0.65rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg);
  color: var(--text);
  font: inherit;
}
input:focus-visible,
textarea:focus-visible {
  border-color: var(--accent);
}
.check-row {
  display: block;
  margin: 0.5rem 0;
  font-weight: 400;
}
.check-row input {
  display: inline-block;
  width: auto;
  margin-right: 0.5rem;
}

.state {
  border-left: 0.25rem solid var(--accent);
  border-radius: var(--radius-sm);
  padding: var(--space-2);
  background: var(--surface-2);
}
.state h2,
.state h3 {
  margin-top: 0;
}
.state-icon {
  font-size: 1.75rem;
  margin: 0 0 0.25rem;
  line-height: 1;
}
.state-reference {
  margin-top: var(--space-2);
  font-size: 0.78rem;
}
.state-forbidden,
.state-error {
  border-color: var(--critical);
}
.state-success {
  border-color: var(--success);
}
.state-empty {
  border-color: var(--border);
  background: transparent;
}

.one-time-secret {
  margin: var(--space-3) 0;
}
.one-time-secret textarea {
  font-family: var(--font-mono);
}

/* ---------- Query Lab ---------- */

.lab-grid {
  display: grid;
  grid-template-columns: minmax(0, 22rem) minmax(0, 1fr);
  gap: var(--space-3);
  align-items: start;
}
@media (max-width: 960px) {
  .lab-grid {
    grid-template-columns: 1fr;
  }
}
.lab-query {
  position: sticky;
  top: calc(var(--topbar-h) + var(--space-2));
}
@media (max-width: 960px) {
  .lab-query {
    position: static;
  }
}

.lab-summary {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2) var(--space-3);
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-2) var(--space-3);
  margin-bottom: var(--space-2);
}
.lab-summary-item {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}
.lab-summary-label {
  color: var(--text-muted);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: 650;
}
.lab-summary-value {
  font-size: 0.95rem;
}

details.panel,
.lab-results details {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-2);
  margin-bottom: var(--space-2);
}
.lab-results summary {
  cursor: pointer;
  font-weight: 650;
}
.lab-results summary::-webkit-details-marker {
  color: var(--accent);
}

/* ---------- Dashboard ---------- */

.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  gap: var(--space-2);
}
.dashboard-grid .panel {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}
.dashboard-grid .button {
  margin-top: auto;
  align-self: flex-start;
}
.dashboard-card .panel-heading {
  justify-content: flex-start;
}
.dashboard-card-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.1rem;
  height: 2.1rem;
  flex-shrink: 0;
  border-radius: var(--radius-sm);
  background: var(--surface-3);
  color: var(--accent);
}
.metric {
  font-size: 2.2rem;
  font-weight: 700;
  margin: 0.1rem 0 0;
  font-variant-numeric: tabular-nums;
}