/*!
 * artifact.css 0.1.0
 * A lightweight stylesheet for agent-produced HTML artifacts.
 * No build step, no JS, no dependencies. Single file.
 *
 * Use by linking, e.g.
 *   <link rel="stylesheet" href="artifact.css">
 * Or by inlining the contents into a <style> block at the top of the file
 * so the artifact remains a single, portable .html.
 *
 * Override any token by re-declaring it on :root.
 */

/* ---------- 1. Tokens ---------- */

:root {
  /* Surfaces */
  --ivory:    #FAF9F5;
  --paper:    #FFFFFF;
  --oat:      #E3DACC;

  /* Ink */
  --slate:    #141413;
  --gray-700: #3D3D3A;
  --gray-500: #87867F;
  --gray-300: #D1CFC5;
  --gray-200: #E6E3DA;
  --gray-100: #F0EEE6;

  /* Accent + semantic */
  --clay:     #D97757;
  --clay-d:   #B85C3E;
  --olive:    #788C5D;
  --rust:     #B04A3F;
  --sky:      #6A8CAF;

  /* Fonts */
  --serif: ui-serif, Georgia, "Times New Roman", Times, serif;
  --sans:  system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono:  ui-monospace, "SF Mono", Menlo, Monaco, Consolas, monospace;

  /* Radii */
  --r-xs: 4px;
  --r-sm: 8px;
  --r-md: 12px;
  --r-lg: 20px;
  --r-pill: 999px;

  /* Borders */
  --hair:   1px solid var(--gray-300);
  --border: 1.5px solid var(--gray-300);
  --border-strong: 1.5px solid var(--slate);

  /* Spacing scale (used by utilities) */
  --sp-1: 4px;
  --sp-2: 8px;
  --sp-3: 12px;
  --sp-4: 16px;
  --sp-5: 24px;
  --sp-6: 32px;
  --sp-7: 48px;
  --sp-8: 64px;

  /* Elevation */
  --shadow-sm: 0 1px 2px rgba(20, 20, 19, 0.06);
  --shadow-md: 0 4px 10px rgba(20, 20, 19, 0.08);
  --shadow-lg: 0 12px 28px rgba(20, 20, 19, 0.12);
}

/* ---------- 2. Reset + base ---------- */

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--ivory);
  color: var(--gray-700);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* Default page container. Override with .page-wide or .page-narrow. */
.page {
  max-width: 860px;
  margin: 0 auto;
  padding: 56px 24px 120px;
}
.page-wide   { max-width: 1120px; }
.page-narrow { max-width: 680px; }

/* ---------- 3. Typography ---------- */

h1, h2, h3, h4 {
  font-family: var(--serif);
  font-weight: 500;
  color: var(--slate);
  letter-spacing: -0.01em;
  margin: 0 0 8px;
  line-height: 1.2;
}
h1 { font-size: 38px; line-height: 1.15; letter-spacing: -0.018em; }
h2 { font-size: 26px; }
h3 { font-size: 19px; }
h4 { font-size: 16px; }

p { margin: 0 0 14px; }

a {
  color: var(--clay);
  text-decoration: underline;
  text-decoration-color: var(--oat);
  text-underline-offset: 3px;
}
a:hover { text-decoration-color: var(--clay); }

code, kbd, samp {
  font-family: var(--mono);
  font-size: 0.92em;
}
p code, li code, td code {
  background: var(--gray-100);
  padding: 1px 5px;
  border-radius: var(--r-xs);
}

/* Eyebrow - small uppercase mono label above a heading */
.eyebrow {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--gray-500);
  margin: 0 0 12px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.eyebrow.with-rule::before {
  content: "";
  width: 24px;
  height: 1.5px;
  background: var(--clay);
}

/* Lead - slightly larger intro paragraph */
.lead {
  font-size: 16.5px;
  color: var(--gray-700);
  max-width: 65ch;
}

/* Horizontal rule under section headings */
hr.rule {
  border: none;
  border-top: 1px solid var(--gray-300);
  margin: 0 0 22px;
}

/* ---------- 4. Sections ---------- */

section { margin: 0 0 64px; }

/* Section head with optional number badge */
.sec-head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin: 0 0 8px;
}
.sec-head h2 { margin: 0; }
.sec-head .num {
  font-family: var(--mono);
  font-size: 12px;
  background: var(--oat);
  color: var(--slate);
  padding: 3px 9px;
  border-radius: var(--r-sm);
}
.sec-head .count {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--gray-500);
  background: var(--gray-100);
  padding: 2px 8px;
  border-radius: var(--r-pill);
}
.sec-intro {
  font-size: 14.5px;
  color: var(--gray-500);
  max-width: 70ch;
  margin: 0 0 24px;
}

/* ---------- 5. Surfaces ---------- */

/* Plain panel - white card with subtle border */
.panel {
  background: var(--paper);
  border: var(--border);
  border-radius: var(--r-md);
  padding: 24px 28px;
}
.panel-flush { padding: 0; overflow: hidden; }

/* Callout - soft oat-colored aside */
.callout {
  background: var(--oat);
  border-radius: var(--r-md);
  padding: 20px 22px;
}

/* Prompt box - the "input that produced this artifact" pattern */
.prompt-box {
  background: var(--gray-100);
  border: var(--border);
  border-radius: var(--r-md);
  padding: 16px 20px;
  font-size: 14.5px;
  color: var(--gray-700);
}
.prompt-box > .label {
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--gray-500);
  display: block;
  margin-bottom: 6px;
}

/* Note variants with a colored left edge */
.note {
  background: var(--paper);
  border: var(--border);
  border-left: 4px solid var(--clay);
  border-radius: var(--r-sm);
  padding: 14px 18px;
}
.note-success { border-left-color: var(--olive); }
.note-warn    { border-left-color: var(--clay); }
.note-danger  { border-left-color: var(--rust); }
.note-info    { border-left-color: var(--sky); }

/* ---------- 6. Inline atoms ---------- */

/* Pill - small rounded label */
.tag, .pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--mono);
  font-size: 11.5px;
  background: var(--gray-100);
  border: 1px solid var(--gray-300);
  border-radius: var(--r-xs);
  padding: 3px 8px;
  color: var(--gray-700);
  text-decoration: none;
}
.pill { border-radius: var(--r-pill); padding: 4px 10px; }

/* Badge - a louder semantic chip */
.badge {
  display: inline-block;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: var(--r-xs);
  background: var(--gray-100);
  color: var(--gray-700);
}
.badge-clay    { background: rgba(217, 119, 87, 0.16); color: var(--clay-d); }
.badge-success { background: rgba(120, 140, 93, 0.18); color: #4B5C39; }
.badge-warn    { background: var(--oat); color: var(--slate); }
.badge-danger  { background: rgba(176, 74, 63, 0.16); color: var(--rust); }
.badge-info    { background: rgba(106, 140, 175, 0.16); color: var(--sky); }

/* Avatar - 36px round initials */
.avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--oat);
  color: var(--slate);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 13px;
  letter-spacing: 0.02em;
  border: var(--border);
  flex-shrink: 0;
}
.avatar-sm { width: 26px; height: 26px; font-size: 11px; border-width: 1px; }
.avatar-lg { width: 48px; height: 48px; font-size: 15px; }

/* Status dot */
.dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--gray-500);
  display: inline-block;
  flex-shrink: 0;
}
.dot-good { background: var(--olive); }
.dot-warn { background: var(--clay); }
.dot-bad  { background: var(--rust); }
.dot-info { background: var(--sky); }

/* ---------- 7. Buttons + form atoms ---------- */

.button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font: inherit;
  font-size: 14px;
  font-weight: 500;
  color: var(--paper);
  background: var(--slate);
  border: 1.5px solid var(--slate);
  padding: 8px 16px;
  border-radius: var(--r-sm);
  text-decoration: none;
  cursor: pointer;
  transition: background 120ms, border-color 120ms, color 120ms;
}
.button:hover { background: var(--gray-700); border-color: var(--gray-700); }
.button-primary { background: var(--clay); border-color: var(--clay); }
.button-primary:hover { background: var(--clay-d); border-color: var(--clay-d); }
.button-ghost {
  background: transparent;
  color: var(--slate);
  border-color: var(--gray-300);
}
.button-ghost:hover { border-color: var(--slate); background: var(--paper); }

.input {
  font: inherit;
  font-size: 14px;
  color: var(--slate);
  background: var(--paper);
  border: var(--border);
  border-radius: var(--r-sm);
  padding: 8px 12px;
  width: 100%;
}
.input:focus { outline: none; border-color: var(--slate); }
.input::placeholder { color: var(--gray-500); }

/* ---------- 8. Tables ---------- */

.table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  background: var(--paper);
  border: var(--border);
  border-radius: var(--r-md);
  overflow: hidden;
}
.table thead th {
  text-align: left;
  font-family: var(--sans);
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--gray-500);
  background: var(--gray-100);
  padding: 12px 16px;
  border-bottom: 1px solid var(--gray-300);
}
.table tbody td {
  padding: 13px 16px;
  border-bottom: 1px solid var(--gray-100);
  font-size: 14px;
  vertical-align: middle;
  color: var(--gray-700);
}
.table tbody tr:last-child td { border-bottom: none; }
.table tbody tr:hover { background: var(--ivory); }
.table .num { font-family: var(--mono); font-variant-numeric: tabular-nums; }

/* ---------- 9. Stat cards ---------- */

.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
@media (max-width: 720px) { .stats { grid-template-columns: repeat(2, 1fr); } }

.stat {
  background: var(--paper);
  border: var(--border);
  border-radius: var(--r-md);
  padding: 20px 22px 18px;
}
.stat-accent { border-left: 4px solid var(--clay); padding-left: 19px; }
.stat-num {
  font-family: var(--serif);
  font-size: 44px;
  font-weight: 500;
  line-height: 1;
  color: var(--slate);
  margin: 0 0 8px;
}
.stat-label {
  font-family: var(--sans);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--gray-500);
}
.stat-delta {
  font-family: var(--mono);
  font-size: 11px;
  margin-top: 6px;
  color: var(--gray-500);
}
.stat-delta.up   { color: var(--olive); }
.stat-delta.down { color: var(--rust); }

/* Compact key-value summary cells (different rhythm to .stat) */
.kv-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
@media (max-width: 720px) { .kv-strip { grid-template-columns: repeat(2, 1fr); } }
.kv-strip .cell {
  background: var(--paper);
  border: var(--border);
  border-radius: var(--r-md);
  padding: 18px 20px;
}
.kv-strip .k {
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--gray-500);
  margin-bottom: 6px;
}
.kv-strip .v {
  font-size: 17px;
  color: var(--slate);
  font-weight: 600;
}
.kv-strip .v.accent { color: var(--clay); }

/* Single-column variant for use inside .panel cards (no double surface) */
.kv-strip.kv-strip-stack {
  grid-template-columns: 1fr;
  gap: 10px;
}
.kv-strip.kv-strip-stack > div {
  background: transparent;
  border: 0;
  padding: 0 0 8px 0;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  border-bottom: 1px dashed var(--gray-200);
}
.kv-strip.kv-strip-stack > div:last-child { border-bottom: 0; padding-bottom: 0; }
.kv-strip.kv-strip-stack .k { margin-bottom: 0; }
.kv-strip.kv-strip-stack .v { font-size: 14px; }

/* ---------- 10. Lists ---------- */

/* Highlights - punchy bulleted lead-in list */
.highlights {
  list-style: none;
  margin: 0;
  padding: 0;
}
.highlights li {
  position: relative;
  padding: 0 0 14px 26px;
  font-size: 15px;
  color: var(--gray-700);
}
.highlights li::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 9px;
  width: 7px;
  height: 7px;
  border-radius: 2px;
  background: var(--clay);
}
.highlights li strong { color: var(--slate); font-weight: 600; }

/* Tag list - horizontal row of pills */
.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
}

/* ---------- 11. Timeline ---------- */

.timeline { display: flex; flex-direction: column; }
.milestone {
  display: grid;
  grid-template-columns: 120px 28px 1fr;
  gap: 0 18px;
}
@media (max-width: 640px) {
  .milestone { grid-template-columns: 80px 24px 1fr; }
}
.milestone .when {
  text-align: right;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--gray-500);
  padding-top: 4px;
}
.milestone .axis {
  display: flex;
  flex-direction: column;
  align-items: center;
}
.milestone .axis .dot {
  width: 14px;
  height: 14px;
  background: var(--paper);
  border: 3px solid var(--clay);
  margin-top: 4px;
}
.milestone .axis .dot.done {
  background: var(--olive);
  border-color: var(--olive);
}
.milestone .axis .line {
  width: 2px;
  flex: 1;
  background: var(--gray-300);
  margin: 4px 0;
}
.milestone:last-child .axis .line { display: none; }
.milestone .body { padding-bottom: 36px; }
.milestone .body h3 { font-size: 19px; margin: 0 0 4px; }
.milestone .body p { font-size: 14px; color: var(--gray-500); margin: 0 0 10px; max-width: 65ch; }

/* ---------- 12. Code block ---------- */

.code-block {
  background: var(--slate);
  border-radius: var(--r-md);
  padding: 18px 20px;
  overflow-x: auto;
}
.code-block pre {
  margin: 0;
  font-family: var(--mono);
  font-size: 12.5px;
  line-height: 1.65;
  color: #E8E6DE;
  white-space: pre;
}
.code-block .kw { color: var(--clay); }    /* keyword */
.code-block .st { color: var(--olive); }   /* string */
.code-block .cm { color: var(--gray-500); } /* comment */
.code-block .fn { color: #C9B98A; }        /* function */

.file-label {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--gray-500);
  margin-bottom: 8px;
}

/* ---------- 13. Diff ---------- */

.diff {
  background: var(--slate);
  font-family: var(--mono);
  font-size: 12.5px;
  line-height: 1.7;
  overflow-x: auto;
  border-radius: var(--r-md);
}
.diff-row {
  display: grid;
  grid-template-columns: 48px 18px 1fr;
  align-items: baseline;
  padding: 0 14px 0 0;
  white-space: pre;
}
.diff-row .ln {
  text-align: right;
  padding-right: 14px;
  color: var(--gray-500);
  user-select: none;
}
.diff-row .mark { text-align: center; color: var(--gray-500); }
.diff-row .code { color: #E8E6DC; }
.diff-row.ctx .code { color: #B8B6AC; }
.diff-row.add { background: rgba(120, 140, 93, 0.15); }
.diff-row.add .mark { color: var(--olive); }
.diff-row.del { background: rgba(176, 74, 63, 0.15); }
.diff-row.del .mark { color: var(--rust); }
.diff-row.hunk {
  background: rgba(255, 255, 255, 0.04);
  color: var(--gray-500);
}
.diff-row.hunk .code { color: var(--gray-500); }

/* ---------- 14. Layout helpers ---------- */

.grid-2  { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.grid-3  { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-4  { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.grid-auto { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 20px; }
@media (max-width: 720px) {
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}

.row { display: flex; align-items: center; gap: 12px; }
.row-baseline { display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; }
.row-between { display: flex; align-items: center; justify-content: space-between; gap: 12px; }

.stack-sm { display: flex; flex-direction: column; gap: 8px; }
.stack    { display: flex; flex-direction: column; gap: 16px; }
.stack-lg { display: flex; flex-direction: column; gap: 32px; }

/* ---------- 15. Utilities ---------- */

.muted { color: var(--gray-500); }
.ink   { color: var(--slate); }
.accent{ color: var(--clay); }
.mono  { font-family: var(--mono); }
.serif { font-family: var(--serif); }
.sans  { font-family: var(--sans); }
.small { font-size: 13px; }
.tiny  { font-size: 11px; }
.uppercase { text-transform: uppercase; letter-spacing: 0.06em; }
.no-underline { text-decoration: none; }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--sp-1); }
.mt-2 { margin-top: var(--sp-2); }
.mt-3 { margin-top: var(--sp-3); }
.mt-4 { margin-top: var(--sp-4); }
.mt-5 { margin-top: var(--sp-5); }
.mt-6 { margin-top: var(--sp-6); }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--sp-1); }
.mb-2 { margin-bottom: var(--sp-2); }
.mb-3 { margin-bottom: var(--sp-3); }
.mb-4 { margin-bottom: var(--sp-4); }
.mb-5 { margin-bottom: var(--sp-5); }
.mb-6 { margin-bottom: var(--sp-6); }

/* ---------- 16. Print ---------- */

@media print {
  body { background: var(--paper); }
  .page { padding: 0; max-width: 100%; }
  .panel, .card, .stat, .kv-strip .cell { box-shadow: none; }
  a { text-decoration-color: var(--gray-300); }
}