/* ============================================================
   LUMINOCITY AI — Base styles
   Shared across all guide pages. Depends on tokens.css.
   ============================================================ */

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

html { font-size: 16px; scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  background: var(--bg);
  color: var(--text);
  line-height: var(--lh-normal);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  transition: background 400ms var(--ease-organic),
              color 400ms var(--ease-organic);
}

::selection { background: var(--gold-500); color: var(--obsidian); }

/* ── Signature motion — these names are the public API ───── */
@keyframes lmx-radiate {
  0%   { transform: scale(1);   opacity: 0.7; border-color: rgba(245,200,66,0.6); }
  40%  { border-color: rgba(198,228,255,0.35); }
  100% { transform: scale(2.8); opacity: 0;   border-color: rgba(198,228,255,0); }
}
@keyframes lmx-beam   { 0%,100%{opacity:.75} 50%{opacity:1} }
@keyframes lmx-core   { 0%,100%{r:9;opacity:1} 50%{r:11;opacity:1} }
@keyframes lmx-glow   { 0%,100%{r:14;opacity:.45} 50%{r:20;opacity:.65} }
@keyframes lmx-atmosphere { 0%,100%{transform:scale(.9);opacity:.5} 50%{transform:scale(1.15);opacity:1} }
@keyframes lmx-shimmer { 0%,100%{background-position:0% center} 50%{background-position:200% center} }
@keyframes lmx-spark   { 0%{opacity:0} 10%{opacity:.9} 85%{opacity:0} 100%{opacity:0} }
@keyframes lmx-breathe { 0%,100%{opacity:.85;transform:scale(1)} 50%{opacity:1;transform:scale(1.02)} }

a { color: inherit; text-decoration: none; }

/* ── Utilities ───────────────────────────────────────────── */
.wrap      { max-width: var(--content-w); margin: 0 auto; padding: 0 var(--s-6); }
.wrap-wide { max-width: var(--wide-w);    margin: 0 auto; padding: 0 var(--s-6); }
.prose     { max-width: var(--prose-w); }

.mono      { font-family: var(--font-mono); }
.display   { font-family: var(--font-display); font-style: italic; font-weight: 400; font-optical-sizing: auto; }

.eyebrow {
  font-family: var(--font-mono);
  font-size: var(--fs-eyebrow);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--text-muted);
  display: inline-flex;
  align-items: center;
  gap: var(--s-3);
}
.eyebrow::before {
  content: "";
  width: 24px; height: 1px;
  background: var(--accent);
  flex-shrink: 0;
}
.eyebrow.eyebrow-plain::before { display: none; }

.section-num {
  font-family: var(--font-mono);
  font-size: var(--fs-eyebrow);
  color: var(--accent);
  letter-spacing: var(--tracking-wide);
}

/* ── Site chrome (guide-specific nav + footer) ───────────── */
.guide-nav {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  background: color-mix(in oklab, var(--bg) 85%, transparent);
  border-bottom: 1px solid var(--border);
}
.guide-nav-inner {
  max-width: var(--wide-w);
  margin: 0 auto;
  padding: var(--s-4) var(--s-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-5);
}
.guide-brand {
  display: flex;
  align-items: center;
  gap: var(--s-3);
  color: var(--text);
  font-weight: 700;
  letter-spacing: var(--tracking-snug);
}
.guide-brand .brand-mark { width: 28px; height: 28px; }
.guide-brand .brand-word { font-size: 0.95rem; }
.guide-brand .brand-sub  {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-muted);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  padding-left: var(--s-3);
  margin-left: var(--s-3);
  border-left: 1px solid var(--border-strong);
}
.guide-nav-links {
  display: flex;
  align-items: center;
  gap: var(--s-1);
  flex-wrap: wrap;
}
.guide-nav-links a {
  font-size: var(--fs-caption);
  color: var(--text-muted);
  padding: var(--s-2) var(--s-3);
  border-radius: var(--r-sm);
  transition: color 200ms var(--ease-organic), background 200ms var(--ease-organic);
}
.guide-nav-links a:hover { color: var(--text); background: var(--surface-raised); }
.guide-nav-links a.active { color: var(--accent); }

.guide-nav-tools {
  display: flex;
  align-items: center;
  gap: var(--s-2);
}

.tool-btn {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  color: var(--text-muted);
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--r-full);
  padding: 6px 12px;
  cursor: pointer;
  transition: all 200ms var(--ease-organic);
  display: inline-flex; align-items: center; gap: var(--s-2);
}
.tool-btn:hover { color: var(--text); border-color: var(--border-strong); }
.tool-btn.is-active { color: var(--accent); border-color: var(--border-hot); }

.tool-swatch {
  width: 10px; height: 10px; border-radius: var(--r-full);
  background: var(--accent);
  box-shadow: 0 0 6px var(--accent-glow);
}

.guide-footer {
  border-top: 1px solid var(--border);
  padding: var(--s-8) var(--s-6) var(--s-6);
  margin-top: var(--s-11);
}
.guide-footer-inner {
  max-width: var(--wide-w);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--s-7);
}
.guide-footer h5 {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: var(--s-4);
}
.guide-footer ul { list-style: none; display: flex; flex-direction: column; gap: var(--s-2); }
.guide-footer a { color: var(--text-secondary); font-size: var(--fs-body-sm); }
.guide-footer a:hover { color: var(--accent); }
.guide-footer-lead {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.5rem;
  line-height: 1.3;
  letter-spacing: -0.02em;
  color: var(--text-secondary);
  max-width: 420px;
}
.guide-footer-meta {
  max-width: var(--wide-w);
  margin: var(--s-8) auto 0;
  padding-top: var(--s-5);
  border-top: 1px solid var(--border);
  display: flex; justify-content: space-between; align-items: center;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-dim);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
}

/* ── Page header (used at top of each content page) ──────── */
.page-head {
  padding: var(--s-9) 0 var(--s-7);
  border-bottom: 1px solid var(--border);
}
.page-head-inner {
  max-width: var(--wide-w);
  margin: 0 auto;
  padding: 0 var(--s-6);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--s-8);
  align-items: end;
}
.page-head h1 {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 400;
  font-size: var(--fs-display);
  line-height: var(--lh-tight);
  letter-spacing: -0.03em;
}
.page-head h1 .san {
  font-family: var(--font-sans);
  font-style: normal;
  font-weight: 800;
  letter-spacing: var(--tracking-tight);
}
.page-head-meta {
  font-size: var(--fs-body);
  color: var(--text-secondary);
  line-height: var(--lh-relaxed);
  max-width: 480px;
  padding-bottom: var(--s-4);
}
.page-head-meta .kicker {
  display: flex; gap: var(--s-5);
  font-family: var(--font-mono);
  font-size: var(--fs-caption);
  color: var(--text-muted);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
  margin-bottom: var(--s-4);
}
.page-head-meta .kicker span:first-child { color: var(--accent); }

/* ── Generic section ─────────────────────────────────────── */
.section {
  padding: var(--s-9) 0;
  border-bottom: 1px solid var(--border);
}
.section:last-of-type { border-bottom: none; }
.section-head {
  max-width: var(--wide-w);
  margin: 0 auto var(--s-7);
  padding: 0 var(--s-6);
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--s-8);
  align-items: start;
}
.section-head h2 {
  font-family: var(--font-display);
  font-style: italic;
  font-weight: 400;
  font-size: var(--fs-h1);
  line-height: var(--lh-tight);
  letter-spacing: -0.03em;
}
.section-head .intro {
  font-size: var(--fs-body-lg);
  color: var(--text-secondary);
  line-height: var(--lh-relaxed);
  max-width: 560px;
}

/* ── Responsive ──────────────────────────────────────────── */
@media (max-width: 900px) {
  .page-head-inner,
  .section-head { grid-template-columns: 1fr; gap: var(--s-5); }
  .guide-footer-inner { grid-template-columns: 1fr 1fr; }
  .guide-nav-links { display: none; }
}