:root {
  color-scheme: light dark;

  --bg: #f8f8f5;
  --bg-panel: #ffffff;
  --bg-raised: #f0efe9;
  --bg-code: #eceae2;
  --fg: #1b1a17;
  --fg-muted: #55534d;
  --border: #d9d6ce;
  --accent: #8b2e2e;
  --accent-fg: #ffffff;
  --warn: #a36500;
  --error: #8b2e2e;
  --error-bg: #f8ded8;
  --ok: #2e6b3a;
  --shadow: 0 1px 2px rgba(20, 18, 14, 0.06), 0 4px 12px rgba(20, 18, 14, 0.05);
  --radius: 8px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #15130f;
    --bg-panel: #1f1d18;
    --bg-raised: #26231d;
    --bg-code: #2a2722;
    --fg: #ece9e0;
    --fg-muted: #a8a59b;
    --border: #353129;
    --accent: #e08a7a;
    --accent-fg: #15130f;
    --warn: #e6b066;
    --error: #e6806f;
    --error-bg: #3a1f1b;
    --ok: #7fb888;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.4), 0 4px 12px rgba(0, 0, 0, 0.35);
  }
}

* {
  box-sizing: border-box;
}

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

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.viewer-header {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  border-bottom: 1px solid var(--border);
  background: var(--bg-panel);
  position: sticky;
  top: 0;
  z-index: 10;
  box-shadow: var(--shadow);
}

.viewer-header__title h1 {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.viewer-header__subtitle {
  margin: 0.15rem 0 0;
  color: var(--fg-muted);
  font-size: 0.85rem;
}

.viewer-header__controls {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
}

.viewer-btn {
  background: var(--bg-raised);
  color: var(--fg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.4rem 0.85rem;
  font-family: inherit;
  font-size: 0.9rem;
  cursor: pointer;
  transition: border-color 80ms ease, background 80ms ease;
}

.viewer-btn:hover,
.viewer-btn:focus-visible {
  border-color: var(--accent);
  outline: none;
}

.viewer-picker {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  color: var(--fg-muted);
}

.viewer-picker__label {
  letter-spacing: 0.02em;
  text-transform: uppercase;
  font-size: 0.7rem;
}

.viewer-picker select {
  background: var(--bg-raised);
  color: var(--fg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.3rem 0.5rem;
  font-family: inherit;
  font-size: 0.85rem;
  min-width: 14rem;
}

.viewer-main {
  display: grid;
  grid-template-columns: minmax(280px, 420px) 1fr;
  gap: 1.5rem;
  padding: 1.5rem;
  align-items: start;
}

@media (max-width: 900px) {
  .viewer-main {
    grid-template-columns: 1fr;
  }
}

.page-panel {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
  box-shadow: var(--shadow);
  position: sticky;
  top: 5.2rem;
}

@media (max-width: 900px) {
  .page-panel {
    position: static;
  }
}

.page-panel__heading {
  margin: 0 0 0.75rem;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--fg-muted);
}

.page-meta {
  display: grid;
  grid-template-columns: max-content 1fr;
  gap: 0.3rem 0.75rem;
  margin: 0 0 1rem;
  font-size: 0.85rem;
}

.page-meta__row {
  display: contents;
}

.page-meta dt {
  color: var(--fg-muted);
}

.page-meta dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  word-break: break-all;
}

.page-panel__figure {
  margin: 0;
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-panel__figure img {
  display: block;
  width: 100%;
  height: auto;
  background: #fff;
}

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

.model-card {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.85rem 1rem 1rem;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.model-card__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: 0.5rem;
}

.model-card__title {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.model-card__badges {
  display: inline-flex;
  gap: 0.35rem;
  flex-wrap: wrap;
  font-size: 0.7rem;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.2rem;
  padding: 0.15rem 0.45rem;
  border-radius: 999px;
  background: var(--bg-raised);
  color: var(--fg-muted);
  border: 1px solid var(--border);
  font-variant-numeric: tabular-nums;
}

.badge--slow {
  color: var(--warn);
  border-color: color-mix(in srgb, var(--warn) 40%, var(--border));
}

.badge--error {
  color: var(--error);
  background: var(--error-bg);
  border-color: color-mix(in srgb, var(--error) 40%, var(--border));
}

.badge--cost {
  color: var(--ok);
  border-color: color-mix(in srgb, var(--ok) 40%, var(--border));
}

.model-card__metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(5rem, 1fr));
  gap: 0.35rem 0.65rem;
  margin: -0.1rem 0 0.65rem;
  padding: 0.5rem 0.65rem;
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.model-card__metrics dt {
  margin: 0;
  color: var(--fg-muted);
  font-size: 0.65rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.model-card__metrics dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-variant-numeric: tabular-nums;
}

.model-card__toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  margin-bottom: 0.5rem;
  font-size: 0.75rem;
  color: var(--fg-muted);
}

.model-card__toggle button {
  background: none;
  border: 1px solid var(--border);
  color: var(--fg-muted);
  border-radius: 4px;
  padding: 0.1rem 0.5rem;
  font-size: 0.7rem;
  cursor: pointer;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.model-card__toggle button[aria-pressed="true"] {
  background: var(--accent);
  color: var(--accent-fg);
  border-color: var(--accent);
}

.model-card__body {
  flex: 1 1 auto;
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.75rem 0.9rem;
  overflow: auto;
  max-height: 28rem;
  min-height: 8rem;
  font-size: 0.85rem;
  line-height: 1.55;
}

.model-card__body--empty {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--fg-muted);
  font-style: italic;
}

.model-card__body--error {
  border-color: color-mix(in srgb, var(--error) 35%, var(--border));
  background: var(--error-bg);
  color: var(--error);
}

.model-card__body pre {
  margin: 0;
  white-space: pre-wrap;
  word-break: break-word;
  font-family: var(--font-mono);
  font-size: 0.8rem;
}

.model-card__body p {
  margin: 0 0 0.75rem;
}

.model-card__body--md h1,
.model-card__body--md h2,
.model-card__body--md h3,
.model-card__body--md h4,
.model-card__body--md h5,
.model-card__body--md h6 {
  margin: 0.65rem 0 0.4rem;
  line-height: 1.25;
  font-weight: 600;
}

.model-card__body--md h1 {
  font-size: 1.1rem;
}

.model-card__body--md h2 {
  font-size: 1.02rem;
}

.model-card__body--md h3 {
  font-size: 0.98rem;
}

.model-card__body--md h4,
.model-card__body--md h5,
.model-card__body--md h6 {
  font-size: 0.92rem;
}

.model-card__body--md ul,
.model-card__body--md ol {
  margin: 0 0 0.75rem;
  padding-left: 1.25rem;
}

.model-card__body--md li {
  margin: 0.15rem 0;
}

.model-card__body--md blockquote {
  margin: 0 0 0.75rem;
  padding: 0.35rem 0 0.35rem 0.75rem;
  border-left: 3px solid var(--border);
  color: var(--fg-muted);
}

.model-card__body--md hr {
  margin: 0.75rem 0;
  border: none;
  border-top: 1px solid var(--border);
}

.model-card__body--md pre {
  background: var(--bg-code);
  padding: 0.55rem 0.65rem;
  border-radius: 4px;
  margin: 0 0 0.75rem;
}

.model-card__body--md pre code {
  background: transparent;
  padding: 0;
  font-size: 0.78rem;
}

.model-card__body table {
  border-collapse: collapse;
  width: 100%;
  font-size: 0.8rem;
  margin-bottom: 0.75rem;
}

.model-card__body th,
.model-card__body td {
  border: 1px solid var(--border);
  padding: 0.2rem 0.4rem;
  text-align: left;
  vertical-align: top;
}

.model-card__body code {
  background: var(--bg-code);
  padding: 0.05rem 0.3rem;
  border-radius: 4px;
  font-size: 0.78rem;
}

.viewer-footer {
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--border);
  font-size: 0.8rem;
  color: var(--fg-muted);
  text-align: center;
}

.viewer-footer kbd {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0 0.35rem;
}

@media print {
  :root {
    color-scheme: light;
    --bg: #ffffff;
    --bg-panel: #ffffff;
    --bg-raised: #ffffff;
    --bg-code: #f4f3ee;
    --fg: #000000;
    --fg-muted: #333333;
    --border: #aaaaaa;
    --shadow: none;
  }

  .viewer-header,
  .viewer-footer,
  .viewer-header__controls,
  .model-card__toggle {
    display: none !important;
  }

  .viewer-main {
    grid-template-columns: 1fr;
    padding: 0;
    gap: 1rem;
  }

  .page-panel {
    position: static;
    break-inside: avoid;
    box-shadow: none;
    border: 1px solid var(--border);
  }

  .model-grid {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }

  .model-card {
    break-inside: avoid;
    box-shadow: none;
    border: 1px solid var(--border);
  }

  .model-card__body {
    max-height: none;
    overflow: visible;
  }
}