/* ── Light Theme (Default) ────────────────────────────────── */
:root {
  --bg-body: #faf6f0;
  --bg-elevated: #fffdf8;
  --text-primary: #2d2418;
  --text-heading: #1a1408;
  --text-secondary: #5c4a37;
  --text-muted: #7a6b56;
  --border-light: #f0e5d7;
  --border-medium: #e8dbcc;
  --border-accent: #d4c4b0;
  --link-color: #b45309;
  --link-hover: #92400e;
  --link-border: rgba(180, 83, 9, 0.25);
  --link-border-hover: rgba(180, 83, 9, 0.6);
  --strong-color: #1a1408;
  --marker-color: #5c4a37;
  --blockquote-bg: #fdf9f3;
  --blockquote-border: #d4c4b0;
  --blockquote-text: #5c4a37;
  --code-inline-bg: #fef3e2;
  --code-inline-color: #9a4710;
  --code-block-bg: #1f1910;
  --code-block-color: #e8dbcc;
  --table-border: #e8dbcc;
  --table-header-bg: #fdf9f3;
  --table-header-text: #4a3b2c;
  --table-row-border: #f5efe6;
  --table-cell-text: #5c4a37;
  --hr-color: #e8dbcc;
}

/* ── Dark Theme ───────────────────────────────────────────── */
@media (prefers-color-scheme: dark) {
  :root {
    --bg-body: #17120c;
    --bg-elevated: #1f1810;
    --text-primary: #d4c4b0;
    --text-heading: #e8dbcc;
    --text-secondary: #a89580;
    --text-muted: #7a6b56;
    --border-light: #2e2419;
    --border-medium: #3d3125;
    --border-accent: #4f4030;
    --link-color: #fb923c;
    --link-hover: #fdba74;
    --link-border: rgba(251, 146, 60, 0.3);
    --link-border-hover: rgba(251, 146, 60, 0.6);
    --strong-color: #e8dbcc;
    --marker-color: #a89580;
    --blockquote-bg: #1f1810;
    --blockquote-border: #4f4030;
    --blockquote-text: #a89580;
    --code-inline-bg: #2a2015;
    --code-inline-color: #fb923c;
    --code-block-bg: #0e0a06;
    --code-block-color: #d4c4b0;
    --table-border: #3d3125;
    --table-header-bg: #1f1810;
    --table-header-text: #cbd5c4;
    --table-row-border: #2e2419;
    --table-cell-text: #a89580;
    --hr-color: #3d3125;
  }
}

/* ── Reset & Base ─────────────────────────────────────────── */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  -moz-tab-size: 4;
  tab-size: 4;
}

body {
  margin: 0 auto;
  padding: 0;
  line-height: 1.7;
  font-family: system-ui, -apple-system, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  color: var(--text-primary);
  background-color: var(--bg-body);
  word-break: break-word;
  overflow-wrap: break-word;
}

#app {
  min-height: 100vh;
}

/* ── Layout Container ─────────────────────────────────────── */
.prose-wrapper {
  max-width: 720px;
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
}

/* ── Typography ───────────────────────────────────────────── */
h1, h2, h3, h4, h5, h6 {
  margin-top: 2em;
  margin-bottom: 0.6em;
  line-height: 1.3;
  color: var(--text-heading);
  font-weight: 700;
}

h1 {
  font-size: 2.25rem;
  padding-bottom: 0.5em;
  border-bottom: 2px solid var(--border-medium);
  letter-spacing: -0.02em;
}

h2 {
  font-size: 1.75rem;
  padding-bottom: 0.35em;
  border-bottom: 1px solid var(--border-light);
}

h3 {
  font-size: 1.375rem;
}

h4 {
  font-size: 1.125rem;
}

h5 {
  font-size: 1rem;
}

h6 {
  font-size: 0.875rem;
  color: var(--text-muted);
}

p {
  margin: 0 0 1.25em;
  line-height: 1.8;
}

/* ── Links ────────────────────────────────────────────────── */
a {
  color: var(--link-color);
  text-decoration: none;
  border-bottom: 1px solid var(--link-border);
  transition: color 0.2s, border-color 0.2s;
}

a:hover {
  color: var(--link-hover);
  border-bottom-color: var(--link-border-hover);
}

/* ── Emphasis & Strong ────────────────────────────────────── */
strong {
  font-weight: 700;
  color: var(--strong-color);
}

em {
  font-style: italic;
}

/* ── Lists ────────────────────────────────────────────────── */
ul, ol {
  margin: 0 0 1.25em;
  padding-left: 1.5rem;
}

li {
  margin-bottom: 0.35em;
  line-height: 1.7;
}

li::marker {
  color: var(--marker-color);
}

/* ── Blockquote ───────────────────────────────────────────── */
blockquote {
  margin: 0 0 1.25em;
  padding: 0.85em 1.25em;
  border-left: 4px solid var(--blockquote-border);
  background: var(--blockquote-bg);
  color: var(--blockquote-text);
  border-radius: 0 6px 6px 0;
}

blockquote p:last-child {
  margin-bottom: 0;
}

/* ── Inline Code ──────────────────────────────────────────── */
code {
  font-family: 'JetBrains Mono', 'Fira Code', 'SF Mono', Menlo, Consolas, monospace;
  font-size: 0.875em;
  padding: 0.15em 0.4em;
  background: var(--code-inline-bg);
  color: var(--code-inline-color);
  border-radius: 4px;
}

/* ── Code Blocks ──────────────────────────────────────────── */
pre {
  margin: 0 0 1.25em;
  padding: 0;
  background: var(--code-block-bg);
  border-radius: 8px;
  overflow: auto;
}

pre code {
  font-size: 0.835rem;
  line-height: 1.65;
  padding: 0;
  background: none;
  color: var(--code-block-color);
  border-radius: 0;
}

/* ── Tables ───────────────────────────────────────────────── */
table {
  width: 100%;
  margin: 0 0 1.25em;
  border-collapse: separate;
  border-spacing: 0;
  border: 1px solid var(--table-border);
  border-radius: 8px;
  overflow: hidden;
  font-size: 0.9375rem;
}

thead {
  background: var(--table-header-bg);
}

th {
  font-weight: 600;
  color: var(--table-header-text);
  border-bottom: 2px solid var(--table-border);
}

td {
  padding: 0.6rem 1rem;
  border-bottom: 1px solid var(--table-row-border);
  color: var(--table-cell-text);
}

tr:last-child td {
  border-bottom: none;
}

/* ── Horizontal Rule ──────────────────────────────────────── */
hr {
  margin: 2em 0;
  border: none;
  border-top: 2px solid var(--hr-color);
}

/* ── Images ───────────────────────────────────────────────── */
img {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  display: block;
  margin: 0.5em 0;
}

/* ── Forms ────────────────────────────────────────────────── */
input,
select,
textarea {
  font-family: inherit;
  font-size: inherit;
  line-height: inherit;
}

/* ── Responsive ───────────────────────────────────────────── */
@media (max-width: 640px) {
  html {
    font-size: 15px;
  }

  .prose-wrapper {
    padding: 1.25rem 1rem 3rem;
  }

  h1 {
    font-size: 1.75rem;
  }

  h2 {
    font-size: 1.4rem;
  }

  h3 {
    font-size: 1.2rem;
  }
}