/* ============================================================
   Style Guide chrome + component CSS
   Built strictly on tokens. No invented colors.
   ============================================================ */

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; min-height: 100vh; }
body {
  background: var(--bg-1);
  background-image:
    radial-gradient(rgba(255,255,255,0.5) 1px, transparent 1px);
  background-size: 3px 3px;
  background-blend-mode: overlay;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background: var(--bg-1);
  opacity: 0.96;
  z-index: -1;
}

/* ---------- Density (tweakable) ---------- */
[data-density="compact"]  { --density-mult: 0.85; }
[data-density="comfy"]    { --density-mult: 1.00; }
[data-density="spacious"] { --density-mult: 1.18; }

/* ---------- Layout ---------- */
.sg-shell {
  display: grid;
  grid-template-columns: 280px 1fr;
  min-height: 100vh;
}

.sg-side {
  position: sticky;
  top: 0;
  align-self: start;
  height: 100vh;
  border-right: 1px solid var(--border-1);
  padding: 48px 32px;
  display: flex;
  flex-direction: column;
  gap: 32px;
  background: var(--bg-1);
  overflow-y: auto;
}
.sg-wordmark {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 28px;
  letter-spacing: -0.02em;
  color: var(--fg-1);
  text-transform: uppercase;
  line-height: 1;
  display: flex;
  align-items: baseline;
  gap: 2px;
}
.sg-wordmark::after {
  content: "";
  width: 8px;
  height: 8px;
  background: var(--accent);
  border-radius: 50%;
  display: inline-block;
  margin-left: 2px;
  align-self: flex-end;
  margin-bottom: 4px;
}
.sg-side-meta {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--fg-3);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  line-height: 1.5;
}
.sg-nav {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.sg-nav-group {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--fg-3);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 16px 0 8px;
}
.sg-nav-link {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 0.02em;
  color: var(--fg-2);
  text-transform: uppercase;
  text-decoration: none;
  border: 0;
  padding: 8px 0;
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
  transition: color var(--dur-base) var(--ease-out);
}
.sg-nav-link::before {
  content: "";
  width: 12px;
  height: 1px;
  background: var(--border-2);
  transition: background var(--dur-base) var(--ease-out), width var(--dur-base) var(--ease-out);
}
.sg-nav-link:hover { color: var(--fg-1); }
.sg-nav-link:hover::before { background: var(--accent); width: 20px; }
.sg-nav-link.is-active { color: var(--accent); }
.sg-nav-link.is-active::before { background: var(--accent); width: 20px; }

.sg-main {
  padding: 64px 80px 160px;
  max-width: 1280px;
}

/* ---------- Section header ---------- */
.sg-hero {
  padding: 32px 0 80px;
  border-bottom: 1px solid var(--border-1);
  margin-bottom: 80px;
}
.sg-eyebrow {
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 16px;
}
.sg-hero-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(72px, 9vw, 132px);
  letter-spacing: -0.035em;
  line-height: 0.88;
  text-transform: uppercase;
  color: var(--fg-1);
  margin: 0 0 24px;
}
.sg-hero-title .dot { color: var(--accent); }
.sg-hero-lead {
  font-family: var(--font-body);
  font-size: 22px;
  line-height: 1.5;
  color: var(--fg-2);
  max-width: 720px;
  margin: 0;
}
.sg-hero-meta {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--border-1);
}
.sg-meta-key {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg-3);
  margin-bottom: 6px;
}
.sg-meta-val {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 18px;
  text-transform: uppercase;
  color: var(--fg-1);
  letter-spacing: -0.005em;
}

/* ---------- Section + group ---------- */
.sg-section {
  padding: 64px 0 96px;
  border-bottom: 1px solid var(--border-1);
}
.sg-section:last-of-type { border-bottom: 0; }
.sg-section-head {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 24px;
  align-items: baseline;
  margin-bottom: 48px;
}
.sg-section-num {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--accent);
  letter-spacing: 0.12em;
}
.sg-section-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 56px;
  letter-spacing: -0.03em;
  line-height: 0.96;
  text-transform: uppercase;
  color: var(--fg-1);
  margin: 0 0 12px;
}
.sg-section-desc {
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.55;
  color: var(--fg-2);
  max-width: 640px;
  margin: 0;
}

.sg-group {
  margin-bottom: 64px;
}
.sg-group:last-child { margin-bottom: 0; }
.sg-group-head {
  display: flex;
  align-items: baseline;
  gap: 16px;
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-1);
}
.sg-group-num {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--fg-3);
  letter-spacing: 0.12em;
  min-width: 32px;
}
.sg-group-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 22px;
  letter-spacing: -0.005em;
  text-transform: uppercase;
  color: var(--fg-1);
  margin: 0;
  flex: 1;
}
.sg-group-note {
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--fg-3);
  font-style: italic;
}

/* ---------- Spec card (the demo container) ---------- */
.sg-spec {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 0;
  background: var(--bg-2);
  border: 1px solid var(--border-1);
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: 16px;
}
.sg-spec-stage {
  padding: 48px 40px;
  display: flex;
  flex-direction: column;
  gap: 24px;
  align-items: flex-start;
  justify-content: center;
  min-height: 200px;
  background:
    linear-gradient(var(--bg-2), var(--bg-2)),
    radial-gradient(rgba(255,255,255,0.4) 1px, transparent 1px);
  background-size: auto, 4px 4px;
  background-blend-mode: normal, overlay;
}
.sg-spec-meta {
  border-left: 1px solid var(--border-1);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  background: var(--bg-1);
}
.sg-spec-name {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--fg-1);
  margin: 0;
}
.sg-spec-row {
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.sg-spec-key {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg-3);
}
.sg-spec-val {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--fg-1);
  word-break: break-all;
}

/* ---------- Color tokens ---------- */
.sg-swatch-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1px;
  background: var(--border-1);
  border: 1px solid var(--border-1);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.sg-swatch {
  background: var(--bg-2);
  padding: 0;
  display: flex;
  flex-direction: column;
}
.sg-swatch-chip {
  height: 96px;
  width: 100%;
  display: flex;
  align-items: flex-end;
  justify-content: flex-end;
  padding: 8px 12px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.sg-swatch-meta {
  padding: 12px 14px 14px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.sg-swatch-token {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--fg-1);
  letter-spacing: 0.02em;
}
.sg-swatch-hex {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--fg-3);
}
.sg-swatch-use {
  font-family: var(--font-body);
  font-size: 12px;
  color: var(--fg-3);
  margin-top: 4px;
}

/* ---------- Type specimens ---------- */
.sg-specimen {
  border-top: 1px solid var(--border-1);
  padding: 32px 0;
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 32px;
  align-items: baseline;
}
.sg-specimen:first-of-type { border-top: 0; padding-top: 0; }
.sg-specimen-meta {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--fg-3);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  line-height: 1.5;
}
.sg-specimen-meta strong {
  display: block;
  color: var(--fg-1);
  font-weight: 500;
  font-size: 13px;
  letter-spacing: 0.04em;
  margin-bottom: 2px;
}
.sg-specimen-sample {
  color: var(--fg-1);
  word-break: break-word;
}

/* ---------- Spacing ramp ---------- */
.sg-spacing {
  display: flex;
  flex-direction: column;
  gap: 1px;
  background: var(--border-1);
  border: 1px solid var(--border-1);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.sg-spacing-row {
  background: var(--bg-2);
  display: grid;
  grid-template-columns: 80px 80px 1fr;
  align-items: center;
  padding: 12px 20px;
  gap: 24px;
}
.sg-spacing-token {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--fg-1);
}
.sg-spacing-px {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--fg-3);
}
.sg-spacing-bar {
  height: 14px;
  background: var(--accent);
  border-radius: 0;
}

/* ---------- Radii ramp ---------- */
.sg-radii {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 1px;
  background: var(--border-1);
  border: 1px solid var(--border-1);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.sg-radius {
  background: var(--bg-2);
  padding: 24px 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}
.sg-radius-box {
  width: 64px;
  height: 64px;
  background: var(--bg-3);
  border: 1px solid var(--border-2);
}
.sg-radius-meta {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--fg-3);
  text-align: center;
  line-height: 1.5;
}
.sg-radius-meta strong {
  display: block;
  color: var(--fg-1);
  font-weight: 500;
  letter-spacing: 0.04em;
}

/* ---------- Shadow specimens ---------- */
.sg-shadows {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.sg-shadow {
  padding: 32px 16px 24px;
  background: var(--bg-2);
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}
.sg-shadow-box {
  width: 100%;
  height: 80px;
  background: var(--bg-3);
  border-radius: var(--radius-md);
}
.sg-shadow-meta {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--fg-3);
  text-align: center;
}
.sg-shadow-meta strong {
  display: block;
  color: var(--fg-1);
  font-weight: 500;
  letter-spacing: 0.04em;
  margin-bottom: 2px;
}

/* ---------- Buttons ---------- */
.btn {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: calc(12px * var(--density-mult, 1)) calc(20px * var(--density-mult, 1));
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: background var(--dur-base) var(--ease-out), color var(--dur-base) var(--ease-out), border-color var(--dur-base) var(--ease-out), transform var(--dur-fast) var(--ease-out);
  line-height: 1;
  text-decoration: none;
}
.btn:active { transform: translateY(1px); }
.btn-primary {
  background: var(--accent);
  color: var(--fg-on-accent);
}
.btn-primary:hover { background: var(--accent-hover); }
.btn-primary:active { background: var(--accent-press); }
.btn-secondary {
  background: var(--bg-3);
  color: var(--fg-1);
  border-color: var(--border-2);
}
.btn-secondary:hover { background: var(--bg-4); border-color: var(--border-3); }
.btn-ghost {
  background: transparent;
  color: var(--fg-1);
  border-color: var(--border-2);
}
.btn-ghost:hover { background: var(--bg-2); border-color: var(--border-3); }
.btn-danger {
  background: var(--danger);
  color: var(--fg-on-accent);
}
.btn-danger:hover { background: var(--danger); filter: brightness(1.08); }
.btn-text {
  background: transparent;
  color: var(--fg-2);
  padding-left: 0;
  padding-right: 0;
  border: 0;
  border-bottom: 1px solid var(--border-2);
  border-radius: 0;
}
.btn-text:hover { color: var(--accent); border-bottom-color: var(--accent); }
.btn-sm { font-size: 11px; padding: 8px 14px; }
.btn-lg { font-size: 14px; padding: 16px 24px; }
.btn[disabled] { opacity: 0.4; pointer-events: none; }
.btn-icon {
  width: 36px; height: 36px;
  padding: 0;
  display: inline-flex; align-items: center; justify-content: center;
  font-family: var(--font-mono);
  font-size: 14px;
}

/* ---------- Form controls ---------- */
.field { display: flex; flex-direction: column; gap: 6px; }
.label {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg-3);
}
.input,
.textarea,
.select {
  font-family: var(--font-body);
  font-size: 15px;
  color: var(--fg-1);
  background: var(--bg-3);
  border: 1px solid var(--border-2);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  outline: none;
  transition: border-color var(--dur-base) var(--ease-out), background var(--dur-base) var(--ease-out);
}
.input::placeholder, .textarea::placeholder { color: var(--fg-4); }
.input:hover, .textarea:hover, .select:hover { border-color: var(--border-3); }
.input:focus, .textarea:focus, .select:focus {
  border-color: var(--accent);
  background: var(--bg-2);
}
.textarea { min-height: 96px; resize: vertical; line-height: 1.5; }
.select {
  appearance: none;
  background-image: linear-gradient(45deg, transparent 50%, var(--fg-3) 50%), linear-gradient(135deg, var(--fg-3) 50%, transparent 50%);
  background-position: calc(100% - 18px) 50%, calc(100% - 13px) 50%;
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;
  padding-right: 36px;
}
.field-help {
  font-family: var(--font-body);
  font-size: 12px;
  color: var(--fg-3);
}
.field-error { color: var(--danger); }

.checkbox, .radio {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--fg-1);
  user-select: none;
}
.checkbox input, .radio input { position: absolute; opacity: 0; pointer-events: none; }
.checkbox-mark, .radio-mark {
  width: 16px;
  height: 16px;
  border: 1px solid var(--border-3);
  background: var(--bg-3);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: background var(--dur-fast) var(--ease-out), border-color var(--dur-fast) var(--ease-out);
}
.checkbox-mark { border-radius: 3px; }
.radio-mark { border-radius: 50%; }
.checkbox input:checked + .checkbox-mark {
  background: var(--accent);
  border-color: var(--accent);
}
.checkbox input:checked + .checkbox-mark::after {
  content: "";
  width: 8px;
  height: 4px;
  border-left: 2px solid var(--fg-on-accent);
  border-bottom: 2px solid var(--fg-on-accent);
  transform: translateY(-1px) rotate(-45deg);
}
.radio input:checked + .radio-mark { border-color: var(--accent); }
.radio input:checked + .radio-mark::after {
  content: "";
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--accent);
}

.toggle {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  user-select: none;
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--fg-1);
}
.toggle input { position: absolute; opacity: 0; pointer-events: none; }
.toggle-track {
  width: 32px;
  height: 18px;
  background: var(--bg-4);
  border-radius: 999px;
  position: relative;
  transition: background var(--dur-base) var(--ease-out);
}
.toggle-track::after {
  content: "";
  position: absolute;
  top: 2px; left: 2px;
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--fg-2);
  transition: transform var(--dur-base) var(--ease-out), background var(--dur-base) var(--ease-out);
}
.toggle input:checked + .toggle-track { background: var(--accent); }
.toggle input:checked + .toggle-track::after {
  transform: translateX(14px);
  background: var(--fg-on-accent);
}

/* ---------- Badges, tags, status ---------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 4px 8px;
  border-radius: 3px;
  background: var(--bg-3);
  color: var(--fg-2);
  border: 1px solid var(--border-1);
  line-height: 1;
}
.badge-accent { background: var(--accent-soft); color: var(--accent); border-color: var(--accent-line); }
.badge-success { background: var(--success-soft); color: var(--success); border-color: rgba(88,194,138,0.32); }
.badge-warning { background: var(--warning-soft); color: var(--warning); border-color: rgba(232,181,71,0.32); }
.badge-danger { background: var(--danger-soft); color: var(--danger); border-color: rgba(229,96,77,0.32); }
.badge-info { background: var(--info-soft); color: var(--info); border-color: rgba(122,167,232,0.32); }

.status {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--fg-2);
}
.status::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--fg-3);
  box-shadow: 0 0 0 0 currentColor;
}
.status-running::before { background: var(--status-running); animation: statusPulse 2s var(--ease-in-out) infinite; }
.status-pending::before { background: var(--status-pending); }
.status-failed::before { background: var(--status-failed); }
.status-idle::before { background: var(--status-idle); }
.status-queued::before { background: var(--status-queued); }
@keyframes statusPulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(88, 194, 138, 0.4); }
  50% { box-shadow: 0 0 0 6px rgba(88, 194, 138, 0); }
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-body);
  font-size: 13px;
  padding: 6px 12px;
  border-radius: var(--radius-pill);
  background: var(--bg-3);
  color: var(--fg-2);
  border: 1px solid var(--border-1);
  line-height: 1;
}
.tag .x {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--fg-3);
  cursor: pointer;
}
.tag .x:hover { color: var(--accent); }

/* ---------- Card ---------- */
.card {
  background: var(--bg-2);
  border: 1px solid var(--border-1);
  border-radius: var(--radius-md);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.card-elevated { background: var(--bg-3); box-shadow: var(--shadow-2); }
.card-accent { border-color: var(--accent-line); box-shadow: var(--shadow-glow); }
.card-interactive { cursor: pointer; transition: background var(--dur-base) var(--ease-out), border-color var(--dur-base) var(--ease-out), transform var(--dur-base) var(--ease-out); }
.card-interactive:hover { background: var(--bg-3); border-color: var(--border-2); }
.card-eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg-3);
  margin: 0;
}
.card-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 22px;
  letter-spacing: -0.005em;
  text-transform: uppercase;
  color: var(--fg-1);
  margin: 0;
  line-height: 1.04;
}
.card-body {
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1.55;
  color: var(--fg-2);
  margin: 0;
}

/* ---------- Tables ---------- */
.table-wrap {
  border: 1px solid var(--border-1);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--bg-2);
}
.table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-body);
  font-size: 14px;
}
.table thead th {
  background: var(--bg-3);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg-3);
  text-align: left;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border-1);
}
.table tbody td {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-1);
  color: var(--fg-2);
  vertical-align: middle;
}
.table tbody tr:last-child td { border-bottom: 0; }
.table tbody tr:hover td { background: var(--bg-3); color: var(--fg-1); }
.table .num { font-family: var(--font-mono); color: var(--fg-1); text-align: right; }
.table .name { color: var(--fg-1); font-weight: 500; }

/* ---------- Code / Terminal ---------- */
.terminal {
  background: var(--bg-0);
  border: 1px solid var(--border-1);
  border-radius: var(--radius-md);
  overflow: hidden;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.65;
}
.terminal-bar {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 10px 16px;
  background: var(--bg-2);
  border-bottom: 1px solid var(--border-1);
}
.terminal-dots { display: flex; gap: 6px; }
.terminal-dots span {
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--bg-4);
}
.terminal-title {
  font-size: 11px;
  color: var(--fg-3);
  letter-spacing: 0.08em;
}
.terminal-body {
  padding: 20px 24px;
  color: var(--fg-2);
  white-space: pre-wrap;
}
.terminal-body .prompt { color: var(--accent); }
.terminal-body .cmd { color: var(--fg-1); }
.terminal-body .out { color: var(--fg-3); }
.terminal-body .ok { color: var(--success); }
.terminal-body .err { color: var(--danger); }

/* ---------- Nav (top + tabs + breadcrumb) ---------- */
.topnav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  background: var(--bg-2);
  border: 1px solid var(--border-1);
  border-radius: var(--radius-md);
  width: 100%;
}
.topnav-brand {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 16px;
  letter-spacing: -0.01em;
  text-transform: uppercase;
  color: var(--fg-1);
  display: flex;
  align-items: baseline;
  gap: 2px;
}
.topnav-brand::after {
  content: "";
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent);
  display: inline-block;
}
.topnav-links {
  display: flex;
  gap: 4px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.topnav-links a {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg-3);
  padding: 8px 12px;
  text-decoration: none;
  border: 0;
}
.topnav-links a:hover { color: var(--fg-1); }
.topnav-links a.is-active { color: var(--accent); }

.tabs {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--border-1);
  width: 100%;
}
.tabs button {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: none;
  border: 0;
  color: var(--fg-3);
  padding: 12px 20px;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: color var(--dur-base) var(--ease-out), border-color var(--dur-base) var(--ease-out);
}
.tabs button:hover { color: var(--fg-1); }
.tabs button.is-active {
  color: var(--fg-1);
  border-bottom-color: var(--accent);
}

.crumbs {
  display: flex;
  gap: 8px;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.crumbs a {
  color: var(--fg-3);
  text-decoration: none;
  border: 0;
}
.crumbs a:hover { color: var(--fg-1); }
.crumbs .sep { color: var(--fg-4); }
.crumbs .current { color: var(--fg-1); }

/* ---------- Feedback ---------- */
.banner {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 20px;
  border: 1px solid var(--border-2);
  border-left: 3px solid var(--fg-3);
  border-radius: var(--radius-sm);
  background: var(--bg-2);
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--fg-2);
  width: 100%;
}
.banner strong {
  display: block;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg-1);
  margin-bottom: 4px;
}
.banner-success { border-left-color: var(--success); }
.banner-success strong { color: var(--success); }
.banner-warning { border-left-color: var(--warning); }
.banner-warning strong { color: var(--warning); }
.banner-danger { border-left-color: var(--danger); }
.banner-danger strong { color: var(--danger); }
.banner-info { border-left-color: var(--info); }
.banner-info strong { color: var(--info); }

.toast {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: var(--bg-3);
  border: 1px solid var(--border-2);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-2);
  font-family: var(--font-body);
  font-size: 13px;
  color: var(--fg-1);
}
.toast .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--success);
}

.empty {
  text-align: center;
  padding: 56px 24px;
  border: 1px dashed var(--border-2);
  border-radius: var(--radius-md);
  background: var(--bg-2);
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: center;
}
.empty-glyph {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 64px;
  color: var(--accent);
  line-height: 1;
  letter-spacing: -0.03em;
  margin-bottom: 4px;
}
.empty-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 18px;
  letter-spacing: -0.005em;
  text-transform: uppercase;
  color: var(--fg-1);
}
.empty-body {
  font-family: var(--font-body);
  font-size: 14px;
  color: var(--fg-3);
  max-width: 320px;
}

.tooltip {
  position: relative;
  display: inline-flex;
}
.tooltip-bubble {
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg-4);
  border: 1px solid var(--border-2);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: var(--fg-1);
  padding: 6px 10px;
  border-radius: var(--radius-xs);
  white-space: nowrap;
  pointer-events: none;
}

/* ---------- Stat / KPI ---------- */
.stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 24px;
  background: var(--bg-2);
  border: 1px solid var(--border-1);
  border-radius: var(--radius-md);
  min-width: 0;
}
.stat-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg-3);
}
.stat-value {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 56px;
  letter-spacing: -0.025em;
  color: var(--fg-1);
  line-height: 0.96;
  font-variant-numeric: tabular-nums;
}
.stat-value .unit {
  font-size: 22px;
  color: var(--fg-3);
  margin-left: 6px;
  letter-spacing: 0;
}
.stat-delta {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--success);
}
.stat-delta.down { color: var(--danger); }

/* ---------- Spark / chart primitives (svg + css) ---------- */
.spark {
  width: 100%;
  height: 64px;
  display: block;
}

/* ---------- Deck primitive preview ---------- */
.deck-preview {
  aspect-ratio: 9/16;
  width: 240px;
  background: var(--bg-1);
  border: 1px solid var(--border-1);
  border-radius: var(--radius-sm);
  position: relative;
  overflow: hidden;
  flex-shrink: 0;
  background-image: radial-gradient(rgba(255,255,255,0.5) 1px, transparent 1px);
  background-size: 3px 3px;
  background-blend-mode: overlay;
}
.deck-preview::after {
  content: "";
  position: absolute; inset: 0;
  background: var(--bg-1);
  opacity: 0.94;
  z-index: 0;
}
.deck-preview > * { position: relative; z-index: 1; }
.deck-row {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  align-items: flex-start;
}
.deck-meta {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--fg-3);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  flex: 1;
  min-width: 220px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.deck-meta strong {
  display: block;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 13px;
  color: var(--fg-1);
  letter-spacing: 0.04em;
  margin-bottom: 4px;
}

/* ---------- Misc ---------- */
.row { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }
.row-lg { gap: 24px; }
.col { display: flex; flex-direction: column; gap: 12px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
@media (max-width: 960px) {
  .sg-shell { grid-template-columns: 1fr; }
  .sg-side { position: relative; height: auto; border-right: 0; border-bottom: 1px solid var(--border-1); }
  .sg-main { padding: 32px 20px 80px; }
  .sg-spec { grid-template-columns: 1fr; }
  .sg-spec-meta { border-left: 0; border-top: 1px solid var(--border-1); }
  .sg-hero-meta { grid-template-columns: repeat(2, 1fr); }
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .sg-shadows { grid-template-columns: repeat(2, 1fr); }
  .sg-radii { grid-template-columns: repeat(3, 1fr); }
}