/* artifax.dev design system — museum warmth meets developer-tool precision.
   Deliberately not Claude/Anthropic's coral/terracotta brand colors: this is a
   platform *for* things made with Claude, not a Claude-branded surface.
   Loaded via a plain <link> (not CSS Modules) so the same stylesheet works both
   in the Next.js app tree and in app/a/[idSlug]/route.ts's hand-built HTML
   string, which cannot import React-bundled CSS. */

:root {
  --color-primary: #5b4fe8;
  --color-primary-hover: #4a3fd1;
  --color-primary-ink: #ffffff;
  --color-accent: #e8a23d;
  --color-accent-ink: #1a1720;

  --color-bg: #faf9f6;
  --color-surface: #ffffff;
  --color-surface-raised: #f1eef7;
  --color-ink: #1a1720;
  --color-ink-soft: #5b5566;
  --color-ink-faint: #8a84a0;
  --color-border: #e4e0ea;
  --color-border-strong: #cfc8dd;

  --color-danger: #b4402a;
  --color-danger-bg: #fbeae6;
  --color-warn-bg: #221f2b;
  --color-warn-ink: #f2efe8;

  --font-serif: "Fraunces", Georgia, "Palatino Linotype", Palatino, "Book Antiqua", serif;
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SF Mono", "Cascadia Mono", Consolas, monospace;

  --radius-sm: 6px;
  --radius-md: 10px;
  --shadow-card: 0 1px 2px rgba(26, 23, 32, 0.04), 0 4px 16px rgba(26, 23, 32, 0.06);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --color-primary: #8a7eff;
    --color-primary-hover: #a99cff;
    --color-primary-ink: #14121f;
    --color-accent: #f0b25a;
    --color-accent-ink: #14121f;

    --color-bg: #14121f;
    --color-surface: #1c1830;
    --color-surface-raised: #241e3a;
    --color-ink: #ede9f5;
    --color-ink-soft: #a79fc0;
    --color-ink-faint: #756e91;
    --color-border: #2d2740;
    --color-border-strong: #3c3454;

    --color-danger: #e08a72;
    --color-danger-bg: #2c1a17;
    --color-warn-bg: #0f0d17;
    --color-warn-ink: #f2efe8;
  }
}
:root[data-theme="dark"] {
  --color-primary: #8a7eff;
  --color-primary-hover: #a99cff;
  --color-primary-ink: #14121f;
  --color-accent: #f0b25a;
  --color-accent-ink: #14121f;

  --color-bg: #14121f;
  --color-surface: #1c1830;
  --color-surface-raised: #241e3a;
  --color-ink: #ede9f5;
  --color-ink-soft: #a79fc0;
  --color-ink-faint: #756e91;
  --color-border: #2d2740;
  --color-border-strong: #3c3454;

  --color-danger: #e08a72;
  --color-danger-bg: #2c1a17;
  --color-warn-bg: #0f0d17;
  --color-warn-ink: #f2efe8;
}

* {
  box-sizing: border-box;
}
html,
body {
  padding: 0;
  margin: 0;
}
body {
  background: var(--color-bg);
  color: var(--color-ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
@media (prefers-reduced-motion: no-preference) {
  a,
  button,
  .card {
    transition:
      color 0.15s ease,
      background-color 0.15s ease,
      border-color 0.15s ease,
      transform 0.15s ease,
      box-shadow 0.15s ease;
  }
}

h1,
h2,
h3 {
  font-family: var(--font-serif);
  font-weight: 600;
  line-height: 1.15;
  margin: 0 0 0.5em;
  text-wrap: balance;
}
h1 {
  font-size: clamp(1.9rem, 1.5rem + 1.6vw, 2.6rem);
}
h2 {
  font-size: 1.4rem;
  margin-top: 2rem;
}
p {
  margin: 0 0 1rem;
}
code,
pre {
  font-family: var(--font-mono);
  font-size: 0.9em;
}
a {
  color: var(--color-primary);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}

.container {
  max-width: 860px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* ---- header / nav shell ------------------------------------------------ */

.site-header {
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 0.9rem;
  padding-bottom: 0.9rem;
  flex-wrap: wrap;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 1.25rem;
  color: var(--color-ink);
}
.brand:hover {
  text-decoration: none;
  color: var(--color-ink);
}
.brand svg {
  flex: none;
}
.site-nav {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  font-size: 0.92rem;
  flex-wrap: wrap;
}
.site-nav .signed-in-as {
  color: var(--color-ink-faint);
  font-size: 0.85rem;
}
.site-footer {
  border-top: 1px solid var(--color-border);
  color: var(--color-ink-faint);
  font-size: 0.85rem;
  margin-top: 4rem;
}
.site-footer .container {
  padding-top: 1.5rem;
  padding-bottom: 2.5rem;
}

main.page {
  padding: 2.5rem 0 3rem;
}

/* ---- buttons ------------------------------------------------------------ */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  font-family: var(--font-sans);
  font-size: 0.92rem;
  font-weight: 600;
  padding: 0.55rem 1.05rem;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  background: var(--color-surface-raised);
  color: var(--color-ink);
}
.btn:hover:not(:disabled) {
  border-color: var(--color-border-strong);
}
.btn:disabled {
  opacity: 0.55;
  cursor: default;
}
.btn-primary {
  background: var(--color-primary);
  color: var(--color-primary-ink);
}
.btn-primary:hover:not(:disabled) {
  background: var(--color-primary-hover);
  border-color: transparent;
}
.btn-ghost {
  background: transparent;
  border-color: var(--color-border);
}
.btn-danger {
  background: transparent;
  border-color: var(--color-danger);
  color: var(--color-danger);
}
.btn-danger:hover:not(:disabled) {
  background: var(--color-danger-bg);
}
.btn-sm {
  padding: 0.32rem 0.7rem;
  font-size: 0.82rem;
}
.btn-row {
  display: flex;
  gap: 0.6rem;
  flex-wrap: wrap;
  align-items: center;
  margin-top: 1rem;
}

/* ---- forms ---------------------------------------------------------------*/

.field {
  margin-bottom: 1.1rem;
}
.field label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-ink-soft);
  margin-bottom: 0.35rem;
}
.field .hint {
  font-size: 0.8rem;
  color: var(--color-ink-faint);
  margin-top: 0.3rem;
}
input[type="text"],
input[type="file"],
input:not([type]),
select,
textarea {
  width: 100%;
  font: inherit;
  font-size: 0.95rem;
  color: var(--color-ink);
  background: var(--color-surface);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  padding: 0.55rem 0.7rem;
}
textarea {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  resize: vertical;
  min-height: 8rem;
}
input:focus,
select:focus,
textarea:focus {
  outline: 2px solid var(--color-primary);
  outline-offset: 1px;
}
fieldset {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.8rem 1rem;
  margin: 0 0 1.1rem;
}
fieldset legend {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-ink-soft);
  padding: 0 0.4rem;
}
.checkbox-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  padding: 0.2rem 0;
}
.checkbox-row input {
  width: auto;
}
.form-divider {
  text-align: center;
  color: var(--color-ink-faint);
  font-size: 0.85rem;
  margin: 1.1rem 0;
  position: relative;
}

.alert {
  padding: 0.6rem 0.85rem;
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  margin: 0.75rem 0;
}
.alert-error {
  background: var(--color-danger-bg);
  color: var(--color-danger);
}
.alert-status {
  background: var(--color-surface-raised);
  color: var(--color-ink-soft);
}

/* ---- cards / surfaces ---------------------------------------------------*/

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.4rem;
  box-shadow: var(--shadow-card);
}
.hero {
  padding: 3.5rem 0 3rem;
}
.hero .tagline {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1.2rem;
  color: var(--color-ink-soft);
  max-width: 36rem;
}

/* ---- homepage feed --------------------------------------------------------*/

.feed-heading {
  font-family: var(--font-serif);
  margin: 2.5rem 0 1.25rem;
}
.feed-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
}
.feed-card {
  display: block;
  color: inherit;
  text-decoration: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
@media (prefers-reduced-motion: reduce) {
  .feed-card {
    transition: none;
  }
}
.feed-card:hover {
  border-color: var(--color-primary);
}
.feed-card-title {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  margin: 0 0 0.4rem;
}
.feed-card-summary {
  color: var(--color-ink-soft);
  font-size: 0.92rem;
  margin: 0 0 0.75rem;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.feed-card-meta {
  margin: 0;
  font-size: 0.8rem;
}
.feed-pagination {
  margin: 1.5rem 0 3rem;
}

/* ---- badges (reproducibility tiers, status pills) -----------------------*/

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35em;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  border: 1px solid var(--color-border-strong);
  color: var(--color-ink-soft);
  background: var(--color-surface-raised);
}
.badge-accent {
  border-color: var(--color-accent);
  color: var(--color-accent-ink);
  background: color-mix(in srgb, var(--color-accent) 22%, var(--color-surface));
}
.badge-primary {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: color-mix(in srgb, var(--color-primary) 12%, var(--color-surface));
}

/* ---- token reveal ---------------------------------------------------------*/

.token-reveal {
  border: 1px solid var(--color-accent);
  background: color-mix(in srgb, var(--color-accent) 10%, var(--color-surface));
  border-radius: var(--radius-md);
  padding: 1.1rem 1.25rem;
  margin: 1rem 0 1.5rem;
}
.token-reveal .token-value {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.92rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.7rem 0.85rem;
  margin: 0.6rem 0 0.8rem;
  word-break: break-all;
  user-select: all;
}

.share-row {
  margin-bottom: 1.25rem;
}

/* ---- the trusted chrome around a sandboxed artifact ----------------------
   Security-relevant layout, not just decoration (PLAN.md §4.7): the warning
   strip must sit outside and above the iframe, never overlappable by it. */

.sandbox-frame {
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--color-surface);
  margin: 1.1rem 0 1.5rem;
}
.sandbox-frame .warning-strip {
  background: var(--color-warn-bg);
  color: var(--color-warn-ink);
  padding: 0.5rem 0.85rem;
  font-size: 0.78rem;
  line-height: 1.4;
}
.sandbox-frame iframe {
  width: 100%;
  height: 600px;
  border: none;
  display: block;
}

/* ---- tables --------------------------------------------------------------*/

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  margin: 1rem 0;
}
th,
td {
  text-align: left;
  padding: 0.55rem 0.6rem;
  border-bottom: 1px solid var(--color-border);
}
th {
  color: var(--color-ink-soft);
  font-weight: 600;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}
td .btn {
  margin-right: 0.35rem;
}

.text-faint {
  color: var(--color-ink-faint);
  font-size: 0.85rem;
}
.stack-actions {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  align-items: center;
}