/* ==========================================================================
   CM Brand Hub — stylesheet
   Canonical reference: cm-branding v2.4, cm-voice v2.1
   ========================================================================== */

/* ---------- Dark theme (default) ---------- */
:root,
[data-theme="dark"] {
  --color-bg: #0c0b09;
  --color-surface: #13120f;
  --color-surface-2: #1a1915;
  --color-surface-offset: #16150f;
  --color-border: #2a2820;
  --color-divider: #201f1a;
  --color-text: #ede9e0;
  --color-text-muted: #9b9588;
  --color-text-faint: #5c5850;
  --color-primary: #d4c5a0;
  --color-primary-hover: #e0d4b4;
  --color-primary-active: #c4b48e;

  --mono-bg: #0c0b09;
  --mono-stroke: #ede9e0;
  --mono-underline: #d4c5a0;
}

/* ---------- Light theme ---------- */
[data-theme="light"] {
  --color-bg: #faf8f5;
  --color-surface: #ffffff;
  --color-surface-2: #f3f0eb;
  --color-surface-offset: #eceae4;
  --color-border: #d6d2c9;
  --color-divider: #e6e3db;
  --color-text: #1a1812;
  --color-text-muted: #6b6659;
  --color-text-faint: #a39e92;
  --color-primary: #8a7d5a;
  --color-primary-hover: #6e6344;
  --color-primary-active: #6e6344;

  --mono-bg: #faf8f5;
  --mono-stroke: #1a1812;
  --mono-underline: #8a7d5a;
}

/* ---------- Type, spacing, layout tokens ---------- */
:root {
  --font-display: "Cabinet Grotesk", Inter, sans-serif;
  --font-body: "Satoshi", Inter, sans-serif;
  --font-mono: "JetBrains Mono", "Courier New", monospace;

  --transition: 180ms cubic-bezier(0.16, 1, 0.3, 1);

  --width-narrow: 640px;
  --width-default: 960px;
  --width-wide: 1200px;

  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
}

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  transition: background var(--transition), color var(--transition);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 0 0 1rem 0;
  color: var(--color-text);
}

h1 { font-size: clamp(2.5rem, 1rem + 4vw, 5rem); }
h2 { font-size: clamp(2rem, 1.2rem + 2.5vw, 3.5rem); }
h3 { font-size: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem); }
h4 { font-size: clamp(1.125rem, 1rem + 0.75vw, 1.5rem); }

p { margin: 0 0 1rem 0; max-width: 72ch; }

a {
  color: var(--color-primary);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--transition), border-color var(--transition);
}
a:hover { color: var(--color-primary-hover); border-bottom-color: var(--color-primary-hover); }

hr {
  border: 0;
  height: 1px;
  background: var(--color-divider);
  margin: 3rem 0;
}

code, kbd, pre {
  font-family: var(--font-mono);
  font-size: 0.9em;
}

code {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border);
  padding: 0.15em 0.4em;
  border-radius: var(--radius-sm);
  color: var(--color-text);
}

pre {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  overflow-x: auto;
  line-height: 1.5;
}

pre code {
  background: transparent;
  border: 0;
  padding: 0;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-primary);
  display: inline-block;
  margin-bottom: 0.5rem;
}

/* ---------- Navigation ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--color-bg) 85%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.nav-inner {
  max-width: var(--width-wide);
  margin: 0 auto;
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.nav-mono { width: 36px; height: 36px; color: var(--color-text); flex-shrink: 0; }

.nav-links {
  display: flex;
  gap: 1.5rem;
  align-items: center;
  flex-wrap: wrap;
}

.nav-links a {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  border-bottom: 0;
}

.nav-links a:hover { color: var(--color-primary); }

.theme-toggle {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 0.5rem 0.9rem;
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: all var(--transition);
}

.theme-toggle:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.theme-toggle .toggle-icon {
  width: 14px;
  height: 14px;
}

/* ---------- Section + container ---------- */
.section {
  padding: 5rem 1.5rem;
  border-bottom: 1px solid var(--color-divider);
}

.section:last-of-type { border-bottom: 0; }

.container {
  max-width: var(--width-wide);
  margin: 0 auto;
}

.container-narrow {
  max-width: var(--width-default);
  margin: 0 auto;
}

/* ---------- Hero ---------- */
.hero {
  padding: 6rem 1.5rem 5rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero-mono {
  width: 96px;
  height: 96px;
  margin: 0 auto 2rem;
  color: var(--color-text);
}

.hero h1 {
  margin-bottom: 1rem;
}

.hero-title-meta {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-primary);
  margin-bottom: 2rem;
}

.hero-tagline {
  color: var(--color-text-muted);
  max-width: 56ch;
  margin: 0 auto 2rem;
  font-size: 1.125rem;
}

.hero-meta {
  display: inline-flex;
  gap: 1rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-faint);
}

.hero-meta span:not(:last-child)::after {
  content: "·";
  margin-left: 1rem;
  color: var(--color-text-faint);
}

/* ---------- Palette grid ---------- */
.palette-section h2 { margin-bottom: 0.5rem; }
.palette-section .lead { color: var(--color-text-muted); margin-bottom: 3rem; max-width: 64ch; }

.theme-block { margin-bottom: 4rem; }
.theme-block:last-child { margin-bottom: 0; }

.theme-block h3 {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.theme-block h3 .pill {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 400;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 0.25rem 0.6rem;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  color: var(--color-text-muted);
  letter-spacing: 0.08em;
}

.swatch-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1rem;
}

.swatch {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: pointer;
  transition: transform var(--transition), border-color var(--transition);
}

.swatch:hover {
  transform: translateY(-2px);
  border-color: var(--color-primary);
}

.swatch-color {
  height: 80px;
  width: 100%;
  border-bottom: 1px solid var(--color-border);
}

.swatch-meta {
  padding: 0.85rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.swatch-role {
  font-family: var(--font-body);
  font-weight: 500;
  color: var(--color-text);
  font-size: 0.95rem;
}

.swatch-hex {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
}

.swatch-token {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--color-text-faint);
  margin-top: 0.25rem;
}

.copied-toast {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--color-surface);
  border: 1px solid var(--color-primary);
  color: var(--color-primary);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.7rem 1.2rem;
  border-radius: var(--radius-md);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition), transform var(--transition);
  z-index: 100;
}

.copied-toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ---------- Typography specimens ---------- */
.type-row {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 2rem;
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--color-divider);
  align-items: baseline;
}
.type-row:last-child { border-bottom: 0; }

.type-meta {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
}

.type-meta strong {
  display: block;
  color: var(--color-text);
  font-family: var(--font-body);
  font-weight: 500;
  text-transform: none;
  letter-spacing: 0;
  font-size: 0.95rem;
  margin-bottom: 0.25rem;
}

.type-specimen { color: var(--color-text); }

.specimen-display { font-family: var(--font-display); font-weight: 700; letter-spacing: -0.02em; line-height: 1.15; }
.specimen-body { font-family: var(--font-body); }
.specimen-mono { font-family: var(--font-mono); letter-spacing: 0.05em; }

/* ---------- Cards / generic surface block ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: all var(--transition);
}

.card:hover {
  border-color: var(--color-primary);
  transform: translateY(-2px);
}

.card h4 { margin-top: 0; margin-bottom: 0.75rem; }
.card p { color: var(--color-text-muted); margin: 0; }

/* ---------- Monogram display ---------- */
.mono-showcase {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.mono-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  text-align: center;
}

.mono-card svg { width: 120px; height: 120px; margin-bottom: 1rem; }

.mono-card-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
}

.download-row {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 1.5rem;
}

.download-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1.2rem;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.download-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

/* ---------- Tables ---------- */
.brand-table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0 2rem;
  font-size: 0.95rem;
}

.brand-table th,
.brand-table td {
  padding: 0.8rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--color-divider);
  vertical-align: top;
}

.brand-table th {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  font-weight: 500;
  background: var(--color-surface);
}

.brand-table td code {
  font-size: 0.85em;
}

/* ---------- Two-column compare block ---------- */
.compare {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin: 1.5rem 0;
}

@media (max-width: 768px) {
  .compare { grid-template-columns: 1fr; }
}

.compare-block {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
}

.compare-block .compare-label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  margin-bottom: 0.75rem;
}

.compare-block.off .compare-label { color: #c47171; }
.compare-block.on .compare-label { color: var(--color-primary); }

.compare-block blockquote {
  margin: 0;
  font-style: normal;
  color: var(--color-text);
  border-left: 3px solid var(--color-border);
  padding-left: 1rem;
}

.compare-block.on blockquote { border-color: var(--color-primary); }

.compare-note {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-top: 1rem;
}

/* ---------- Pill lists ---------- */
.pill-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  list-style: none;
  padding: 0;
  margin: 0 0 1.5rem;
}

.pill-list li {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 0.4rem 0.85rem;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  color: var(--color-text-muted);
  background: var(--color-surface);
}

.pill-list.banned li {
  color: #c47171;
  border-color: #5c2828;
}

[data-theme="light"] .pill-list.banned li {
  color: #9a3838;
  border-color: #d6a8a8;
  background: #fbf2f0;
}

/* ---------- Voice rules signature moves ---------- */
.moves-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
}

.move-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.25rem;
}

.move-card h5 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  margin: 0 0 0.5rem;
  color: var(--color-text);
}

.move-card p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin: 0;
}

.move-card em {
  display: block;
  margin-top: 0.75rem;
  color: var(--color-text);
  font-style: italic;
  font-size: 0.9rem;
}

/* ---------- Signature preview ---------- */
.signature-preview {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  margin: 1rem 0;
  display: flex;
  gap: 1.5rem;
  align-items: center;
}

.signature-preview svg { width: 64px; height: 64px; color: var(--color-text); flex-shrink: 0; }

.signature-text strong { color: var(--color-text); font-size: 1rem; }
.signature-text .title { color: var(--color-text-muted); font-size: 0.875rem; margin: 0.15rem 0 0.5rem; }
.signature-text .lines { color: var(--color-text-muted); font-size: 0.875rem; }
.signature-text .lines div { margin-top: 0.15rem; }

/* ---------- Footer ---------- */
.footer {
  padding: 3rem 1.5rem;
  text-align: center;
  border-top: 1px solid var(--color-border);
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.footer a { color: var(--color-text-muted); border-bottom: 0; }
.footer a:hover { color: var(--color-primary); }

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    transition: none !important;
    animation: none !important;
  }
}

/* ---------- Mobile ---------- */
@media (max-width: 768px) {
  .nav-inner { padding: 0.75rem 1rem; gap: 0.75rem; }
  .nav-links { gap: 0.75rem; }
  .nav-links a { font-size: 0.7rem; }
  .nav-links .desktop-only { display: none; }
  .section { padding: 3.5rem 1rem; }
  .hero { padding: 4rem 1rem 3rem; }
  .type-row { grid-template-columns: 1fr; gap: 0.75rem; }
}