/* ============================================================
   tmbpg.com — site styles
   Layers on top of colors_and_type.css. Everything here is
   layout, chrome, and component patterns not already in tokens.
   ============================================================ */

/* ----------  Accent intensity (tweakable) ---------- */
:root {
  --accent-intensity: 1;
}

/* ----------  Base layout ---------- */
html { scroll-behavior: smooth; }
body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

.container {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 var(--space-5);
  box-sizing: border-box;
}
.container--narrow { max-width: 760px; }
.container--prose  { max-width: 680px; }

main { flex: 1; padding: 0 0 var(--space-9); }

/* ----------  Site header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--color-bg) 94%, transparent);
  backdrop-filter: saturate(1.2) blur(8px);
  -webkit-backdrop-filter: saturate(1.2) blur(8px);
  border-bottom: 1px solid var(--color-border-subtle);
}
.site-header__inner {
  height: 52px;
  display: flex; align-items: center; gap: var(--space-5);
  max-width: 1120px; margin: 0 auto;
  padding: 0 var(--space-5);
  box-sizing: border-box;
}
.brand {
  display: inline-flex; align-items: center; gap: 10px;
  color: var(--color-fg-strong);
  border-bottom: 0;
  padding: 0;
}
.brand:hover { color: var(--color-fg-strong); border-color: transparent; }
.brand__mark { width: 22px; height: 22px; display: block; }
.brand__name {
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--color-fg-strong);
}
.site-nav {
  display: flex; align-items: center; gap: var(--space-5);
  margin-left: auto;
}
.site-nav a {
  font-family: var(--font-mono);
  font-size: var(--text-2xs);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--color-fg-muted);
  border-bottom: 0;
  padding: 0;
}
.site-nav a:hover,
.site-nav a[aria-current="page"] { color: var(--color-fg-strong); border-bottom: 0; }
.site-nav a[aria-current="page"]::before { content: '§ '; color: var(--color-brand-text); }

.theme-toggle {
  display: inline-flex; align-items: center; gap: 2px;
  padding: 3px;
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-sm);
}
.theme-toggle button {
  width: 22px; height: 22px;
  display: inline-grid; place-items: center;
  background: transparent; border: 0;
  color: var(--color-fg-muted);
  cursor: pointer;
  border-radius: 2px;
  padding: 0;
  transition: color var(--duration-base) var(--ease-standard),
              background var(--duration-base) var(--ease-standard);
}
.theme-toggle button:hover { color: var(--color-fg-strong); }
.theme-toggle button[aria-pressed="true"] {
  background: var(--color-bg-raised);
  color: var(--color-fg-strong);
  box-shadow: var(--elevation-1);
}
.theme-toggle svg { width: 12px; height: 12px; }

/* ----------  Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font-family: var(--font-sans);
  font-weight: 500; letter-spacing: -.01em;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  cursor: pointer; line-height: 1.4;
  padding: 8px 16px; font-size: 13px;
  text-decoration: none;
  transition: background var(--duration-base) var(--ease-standard),
              border-color var(--duration-base) var(--ease-standard),
              color var(--duration-base) var(--ease-standard);
  white-space: nowrap;
}
.btn--lg { padding: 11px 22px; font-size: 15px; }
.btn--sm { padding: 5px 12px; font-size: 12px; border-radius: var(--radius-sm); }
.btn--primary {
  background: var(--color-brand);
  color: var(--color-brand-on-brand);
  border-color: var(--color-brand);
}
.btn--primary:hover {
  background: var(--color-brand-hover);
  border-color: var(--color-brand-hover);
  color: var(--color-brand-on-brand);
}
.btn--secondary {
  background: var(--color-bg-raised);
  color: var(--color-fg-strong);
  border-color: var(--color-border-default);
}
.btn--secondary:hover {
  border-color: var(--color-brand-text);
  color: var(--color-fg-strong);
  background: var(--color-bg-elevated);
}
.btn--ghost {
  background: transparent;
  color: var(--color-fg);
}
.btn--ghost:hover { color: var(--color-fg-strong); background: var(--color-bg-elevated); }
.btn__arrow { font-family: var(--font-mono); display: inline-block; transition: transform var(--duration-base) var(--ease-standard); }
.btn:hover .btn__arrow { transform: translateX(2px); }

/* No `a.btn` border-bottom override needed: `.btn { border: 1px solid transparent }`
   wins on specificity over the global `a { border-bottom: 1px solid ... }` rule,
   so links inside buttons render the button's intended border, not the link
   underline-as-border. */
a.btn:hover { border-color: transparent; }
a.btn--secondary:hover { border-color: var(--color-brand-text); }
a.btn--primary { color: var(--color-brand-on-brand); }
a.btn--primary:hover { border-color: var(--color-brand-hover); color: var(--color-brand-on-brand); }

/* ----------  Eyebrow / labels ---------- */
.eyebrow {
  font-family: var(--font-mono);
  font-size: var(--text-2xs);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--color-fg-muted);
  display: inline-block;
}
.eyebrow--brand::before { content: '§ '; color: var(--color-brand-text); }

/* ----------  Kicker line — the thin brand-purple underline motif ---------- */
.kicker {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-mono);
  font-size: var(--text-2xs);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--color-brand-text);
}
.kicker::before {
  content: '';
  display: inline-block;
  width: 24px; height: 1px;
  background: var(--color-brand-text);
  opacity: calc(0.5 + 0.5 * var(--accent-intensity));
}

/* ----------  Section rhythm ---------- */
.section { padding: var(--space-8) 0; }
.section + .section { border-top: 1px solid var(--color-border-subtle); }
.section__head {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: var(--space-6);
  align-items: baseline;
  margin-bottom: var(--space-6);
}
.section__head .eyebrow { padding-top: 6px; }
.section__head h2 {
  margin: 0;
  font-size: var(--text-2xl);
  font-weight: var(--weight-display);
  letter-spacing: var(--tracking-tight);
  max-width: 28ch;
}
@media (max-width: 720px) {
  .section__head { grid-template-columns: 1fr; gap: var(--space-3); }
}

/* ----------  Cards ---------- */
.card {
  background: var(--color-bg-raised);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-sm);
  padding: var(--space-5);
  transition: border-color var(--duration-base) var(--ease-standard),
              background var(--duration-base) var(--ease-standard);
}
.card--link { display: block; color: var(--color-fg); border-bottom: 0; padding-bottom: var(--space-5); }
.card--link:hover {
  border-color: var(--color-brand-text);
  color: var(--color-fg);
}
:root[data-theme="light"] .card { box-shadow: var(--elevation-1); }

/* ----------  Hairline grid divider (used on services, writing list) ---------- */
.rule-list { list-style: none; margin: 0; padding: 0; }
.rule-list > li {
  border-top: 1px solid var(--color-border-subtle);
  padding: var(--space-5) 0;
}
.rule-list > li:last-child { border-bottom: 1px solid var(--color-border-subtle); }

/* ----------  Footer ---------- */
.site-footer {
  margin-top: var(--space-8);
  border-top: 1px solid var(--color-border-subtle);
  padding: var(--space-7) 0 var(--space-6);
  color: var(--color-fg-muted);
}
.site-footer__inner {
  max-width: 1120px; margin: 0 auto;
  padding: 0 var(--space-5);
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: var(--space-6);
  box-sizing: border-box;
}
.site-footer__col h4 {
  font-family: var(--font-mono);
  font-size: var(--text-2xs);
  font-weight: var(--weight-medium);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--color-fg-muted);
  margin: 0 0 var(--space-3);
}
.site-footer__col ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.site-footer__col a {
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  color: var(--color-fg);
  border-bottom: 0; padding: 0;
}
.site-footer__col a:hover { color: var(--color-fg-strong); }
.site-footer__meta {
  max-width: 1120px; margin: var(--space-6) auto 0;
  padding: var(--space-5) var(--space-5) 0;
  border-top: 1px solid var(--color-border-subtle);
  display: flex; justify-content: space-between; align-items: center;
  font-family: var(--font-mono);
  font-size: var(--text-2xs);
  letter-spacing: var(--tracking-wide);
  color: var(--color-fg-muted);
  box-sizing: border-box;
  flex-wrap: wrap;
  gap: var(--space-3);
}
.rss-link {
  display: inline-flex; align-items: center; gap: 8px;
  color: var(--color-accent-orange);
  border-bottom: 0; padding: 0;
  font-family: var(--font-mono);
  font-size: var(--text-2xs);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
}
.rss-link:hover { color: var(--color-accent-orange); filter: brightness(1.1); border-bottom: 0; }
.rss-link svg { width: 12px; height: 12px; }

@media (max-width: 720px) {
  .site-footer__inner { grid-template-columns: 1fr 1fr; }
}

/* ----------  Prose (essay body) ---------- */
.prose {
  max-width: 68ch;
  font-size: var(--text-md);
  line-height: var(--leading-relaxed);
  color: var(--color-fg);
}
.prose h2, .prose h3 {
  margin-top: var(--space-7);
  margin-bottom: var(--space-3);
}
.prose h2 {
  font-size: var(--text-xl);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-tight);
  padding-top: var(--space-5);
  border-top: 1px solid var(--color-border-subtle);
}
.prose h3 { font-size: var(--text-lg); font-weight: var(--weight-semibold); }
.prose p { margin: 0 0 var(--space-4); }
.prose blockquote {
  margin: var(--space-6) 0;
  padding: 0 0 0 var(--space-5);
  border-left: 2px solid var(--color-brand);
  font-family: var(--font-display);
  font-style: italic;
  font-size: var(--text-xl);
  line-height: var(--leading-snug);
  color: var(--color-fg-strong);
}
.prose ul, .prose ol { padding-left: 1.2em; margin: 0 0 var(--space-4); }
.prose li { margin: 0 0 var(--space-2); }
.prose a {
  color: var(--color-fg-strong);
  border-bottom: 1px solid var(--color-border-default);
}
.prose a:hover { color: var(--color-brand-text); border-color: var(--color-brand-text); }
.prose hr { margin: var(--space-6) 0; }
.prose > p:first-of-type::first-letter {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 400;
  float: left;
  font-size: 3.2em;
  line-height: 0.85;
  padding-right: 0.08em;
  padding-top: 0.08em;
  color: var(--color-brand-accent);
}

/* ----------  Focus ring on everything interactive ---------- */
:where(a, button, input, textarea, select):focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
  border-radius: var(--radius-sm);
}

/* ----------  Form controls ---------- */
.field { display: grid; gap: 6px; margin-bottom: var(--space-4); }
.field > label {
  font-family: var(--font-mono);
  font-size: var(--text-2xs);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--color-fg-muted);
}
.field > label .req { color: var(--color-brand-text); }
.input, .textarea, .select {
  width: 100%;
  box-sizing: border-box;
  background: var(--color-bg-raised);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-md);
  padding: 10px 12px;
  font-family: var(--font-sans);
  font-size: var(--text-base);
  color: var(--color-fg-strong);
  transition: border-color var(--duration-base) var(--ease-standard);
}
.input:hover, .textarea:hover, .select:hover { border-color: var(--color-border-strong); }
.input:focus, .textarea:focus, .select:focus {
  border-color: var(--color-brand-text);
  outline: none;
  box-shadow: var(--focus-ring);
}
.textarea { min-height: 140px; resize: vertical; font-family: var(--font-sans); }
.field__hint {
  font-family: var(--font-mono);
  font-size: var(--text-2xs);
  color: var(--color-fg-muted);
  letter-spacing: var(--tracking-wide);
}
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-4); }
@media (max-width: 640px) { .field-row { grid-template-columns: 1fr; } }

/* ----------  Accent intensity (tweakable) modulates purple visibility ----
   Works by toning down kicker rules, italic-serif, and brand hover states
   when intensity < 1. Never affects logo or primary CTA. */
body { --accent-intensity: 1; }
.t-accent, .prose blockquote, .eyebrow--brand::before, .t-eyebrow--brand::before {
  opacity: calc(0.55 + 0.45 * var(--accent-intensity));
}

/* ----------  Tweaks panel ---------- */
#tweaks-root { position: fixed; right: 16px; bottom: 16px; z-index: 100; }
.tweaks {
  width: 280px;
  background: var(--color-bg-raised);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-md);
  box-shadow: var(--elevation-3);
  padding: var(--space-4);
  font-family: var(--font-sans);
  font-size: var(--text-sm);
}
.tweaks h5 {
  margin: 0 0 var(--space-3);
  font-family: var(--font-mono);
  font-size: var(--text-2xs);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--color-fg-muted);
  display: flex; justify-content: space-between; align-items: center;
}
.tweaks h5::before { content: '§ TWEAKS'; color: var(--color-brand-text); }
.tweaks h5 .close {
  background: transparent; border: 0; color: var(--color-fg-muted);
  cursor: pointer; font-family: var(--font-mono); font-size: 14px;
}
.tweaks-row { display: grid; gap: 6px; margin-bottom: var(--space-3); }
.tweaks-row label {
  font-family: var(--font-mono); font-size: var(--text-2xs);
  letter-spacing: var(--tracking-wide); text-transform: uppercase;
  color: var(--color-fg);
  display: flex; justify-content: space-between;
}
.tweaks-row label .val { color: var(--color-fg-muted); }
.tweaks-seg {
  display: grid; grid-auto-flow: column; grid-auto-columns: 1fr;
  background: var(--color-bg-elevated);
  border-radius: var(--radius-sm);
  padding: 2px;
  gap: 2px;
}
.tweaks-seg button {
  background: transparent; border: 0;
  padding: 6px 4px;
  font-family: var(--font-mono); font-size: var(--text-2xs);
  letter-spacing: var(--tracking-wide); text-transform: uppercase;
  color: var(--color-fg-muted);
  cursor: pointer;
  border-radius: 2px;
}
.tweaks-seg button[aria-pressed="true"] {
  background: var(--color-bg-raised);
  color: var(--color-fg-strong);
  box-shadow: var(--elevation-1);
}
.tweaks input[type="range"] { width: 100%; accent-color: var(--color-brand); }

/* ----------  Page hero shared ---------- */
.page-hero { padding: var(--space-8) 0 var(--space-7); }
.page-hero .eyebrow { margin-bottom: var(--space-4); }
.page-hero h1 { margin: 0 0 var(--space-4); }
.page-hero .lede {
  font-family: var(--font-display);
  font-style: italic;
  font-size: var(--text-xl);
  line-height: var(--leading-snug);
  color: var(--color-fg-subtle);
  max-width: 52ch;
  margin: 0;
}

/* ----------  Utility ---------- */
.stack-2 > * + * { margin-top: var(--space-2); }
.stack-3 > * + * { margin-top: var(--space-3); }
.stack-4 > * + * { margin-top: var(--space-4); }
.stack-5 > * + * { margin-top: var(--space-5); }
.stack-6 > * + * { margin-top: var(--space-6); }
.mono { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }
.muted { color: var(--color-fg-muted); }