/* Make & Up — Cosmetic Pigment Chemistry & Undertone Lab Stylesheet */
:root {
  --bg-canvas: #FCFAF8;
  --bg-surface: #F3EEF0;
  --bg-elevated: #FFFFFF;
  --ink: #141214;
  --ink-muted: #585055;
  --rule: #E0D7DC;
  --rule-strong: #141214;
  --accent: #BE185D;
  --accent-warm: #D97742;
  --safe: #1B5E4A;
  --warn: #B45309;
  --font-display: 'Syne', 'Ubuntu Mono', sans-serif;
  --font-body: 'Epilogue', 'Ubuntu Mono', sans-serif;
  --font-mono: 'Ubuntu Mono', monospace;
  --editorial-width: 76rem;
  --content-width: 49rem;
  --rail-width: 18.5rem;
  --grid-gap: 3rem;
  --container-pad: 1.25rem;
}

@media (min-width: 768px) {
  :root {
    --container-pad: 2.25rem;
  }
}

@media (min-width: 1280px) {
  :root {
    --container-pad: 3rem;
  }
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg-canvas);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 1.03rem;
  line-height: 1.68;
  -webkit-font-smoothing: antialiased;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--ink);
  color: var(--bg-canvas);
  padding: 0.65rem 1rem;
  z-index: 100;
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

.skip-link:focus {
  left: 1rem;
  top: 1rem;
}

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover {
  color: var(--ink);
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.mu-wrap {
  width: 100%;
  max-width: var(--editorial-width);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

/* Header & Two-Tier Navigation */
.mu-header {
  background: var(--bg-canvas);
  border-bottom: 2px solid var(--rule-strong);
}

.mu-header-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1.25rem;
  padding: 1.05rem 0;
  flex-wrap: wrap;
}

.mu-brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.38rem;
  letter-spacing: -0.025em;
  text-decoration: none;
  color: var(--ink);
}

.mu-brand-mark {
  color: var(--accent);
}

.mu-nav-primary {
  display: flex;
  gap: 1.35rem;
  flex-wrap: wrap;
  align-items: center;
}

.mu-nav-primary a {
  color: var(--ink);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 500;
}

.mu-nav-primary a:hover,
.mu-nav-primary a.is-current {
  color: var(--accent);
}

.mu-subbar {
  background: var(--bg-surface);
  border-top: 1px solid var(--rule);
  padding: 0.62rem 0;
}

.mu-subbar-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.mu-desk-links {
  display: flex;
  gap: 1.15rem;
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 0.8rem;
}

.mu-desk-links a {
  color: var(--ink-muted);
  text-decoration: none;
}

.mu-desk-links a:hover,
.mu-desk-links a.is-current {
  color: var(--accent);
}

.langbar {
  display: flex;
  gap: 0.55rem;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.78rem;
}

.langbar a {
  color: var(--ink);
  text-decoration: none;
  border: 1px solid var(--rule);
  padding: 0.22rem 0.55rem;
  background: var(--bg-elevated);
}

.langbar a.is-active {
  background: var(--ink);
  color: var(--bg-canvas);
  border-color: var(--ink);
}

/* Daylight Swatch Ribbon Bar */
.swatch-ribbon-bar {
  background: var(--bg-surface);
  border-bottom: 1px solid var(--rule);
  padding: 0.8rem 0;
}

.swatch-ribbon-flex {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.mu-kicker {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  margin: 0 0 0.5rem;
}

.mu-label-mono {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--ink-muted);
}

.pill-group {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.mu-pill {
  appearance: none;
  border: 1px solid var(--rule-strong);
  background: var(--bg-elevated);
  color: var(--ink);
  padding: 0.48rem 0.9rem;
  min-height: 44px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  cursor: pointer;
  transition: background-color 0.15s ease, color 0.15s ease;
}

.mu-pill:hover {
  border-color: var(--accent);
}

.mu-pill.is-active {
  background: var(--ink);
  color: var(--bg-canvas);
}

/* Typography & Hero */
h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -0.025em;
  color: var(--ink);
  text-wrap: balance;
}

h1 {
  font-size: clamp(2rem, 3.8vw, 3.05rem);
  line-height: 1.08;
  margin: 0 0 1rem;
}

h2 {
  font-size: clamp(1.45rem, 2.5vw, 1.95rem);
  line-height: 1.16;
  margin: 2.25rem 0 0.85rem;
}

h3 {
  font-size: 1.18rem;
  line-height: 1.25;
  margin: 1.5rem 0 0.6rem;
}

.mu-hero-split {
  display: grid;
  grid-template-columns: 1.15fr 0.95fr;
  gap: 2.75rem;
  padding: 2.25rem 0 1.75rem;
  align-items: start;
}

.mu-lead {
  font-size: 1.06rem;
  color: var(--ink-muted);
  max-width: 58ch;
  margin: 0 0 1.25rem;
}

.mu-figure {
  margin: 0;
}

.mu-figure img,
.mu-figure svg {
  width: 100%;
  height: auto;
  display: block;
}

.mu-figcaption {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--ink-muted);
  margin-top: 0.55rem;
}

/* CIE Lab Swatch Strip */
@keyframes swatchFade {
  from { opacity: 0.78; }
  to { opacity: 1; }
}

.cie-swatch-grid {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 0.75rem;
  padding: 0 0 2rem;
  border-bottom: 2px solid var(--rule-strong);
  animation: swatchFade 0.25s ease;
}

.cie-swatch-card {
  background: var(--bg-elevated);
  border: 1px solid var(--rule);
  padding: 0.55rem;
}

.cie-swatch-tile {
  height: 3.1rem;
  width: 100%;
  margin-bottom: 0.45rem;
}

.cie-swatch-name {
  display: block;
  font-size: 0.84rem;
  font-weight: 600;
  line-height: 1.25;
}

.cie-swatch-coord {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--ink-muted);
  font-variant-numeric: tabular-nums;
  margin-top: 0.2rem;
}

/* Answer Capsule (GEO Link-Free) */
.mu-capsule-wrap {
  margin: 1.75rem 0;
}

.answer-box {
  background: var(--bg-surface);
  border-left: 4px solid var(--accent);
  padding: 1.2rem 1.4rem;
  font-size: 0.99rem;
  line-height: 1.65;
  max-width: var(--content-width);
}

.mu-capsule-src {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--ink-muted);
  margin: 0.45rem 0 0;
}

/* Interactive Decoder Workbench */
.mu-decoder-slab {
  padding: 2rem 0;
  border-bottom: 1px solid var(--rule);
}

.mu-decoder-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 2.25rem;
  align-items: start;
  margin-top: 1.15rem;
}

.mu-control-block {
  margin-bottom: 1.2rem;
}

.mu-verdict-banner {
  background: var(--bg-surface);
  border-top: 3px solid var(--rule-strong);
  border-left: 4px solid var(--safe);
  padding: 1.35rem 1.5rem;
}

.mu-verdict-banner.is-warn {
  border-left-color: var(--warn);
}

.mu-verdict-banner.is-risk {
  border-left-color: var(--accent);
}

.mu-verdict-status {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--accent);
  margin: 0 0 0.4rem;
}

.mu-oxide-bars {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.55rem;
  margin: 1rem 0;
}

.mu-oxide-item {
  background: var(--bg-elevated);
  border: 1px solid var(--rule);
  padding: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-variant-numeric: tabular-nums;
}

.mu-oxide-bar {
  height: 8px;
  margin-bottom: 0.35rem;
}

/* Booktabs Three-Line Tables (Zero td/th display violations) */
.table-responsive-wrap {
  width: 100%;
  overflow-x: auto;
  margin: 1.4rem 0;
  -webkit-overflow-scrolling: touch;
}

.mu-booktabs {
  width: 100%;
  border-collapse: collapse;
  border-top: 2px solid var(--rule-strong);
  border-bottom: 2px solid var(--rule-strong);
  font-size: 0.9rem;
  line-height: 1.48;
  font-variant-numeric: tabular-nums;
}

.mu-booktabs thead th {
  text-align: left;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 700;
  color: var(--ink);
  border-bottom: 1.5px solid var(--rule-strong);
  padding: 0.7rem 0.85rem;
  background: var(--bg-surface);
}

.mu-booktabs tbody td {
  padding: 0.72rem 0.85rem;
  border-bottom: 1px solid var(--rule);
  vertical-align: top;
}

.mu-booktabs tbody tr:last-child td {
  border-bottom: 0;
}

.mu-badge:not(td):not(th) {
  display: inline-block;
  padding: 0.14rem 0.48rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  background: var(--bg-surface);
  border: 1px solid var(--rule);
  white-space: nowrap;
}

/* Guide Two-Column Layout + Sticky Rail */
.mu-guide-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) var(--rail-width);
  gap: var(--grid-gap);
  padding: 2rem 0 2.5rem;
  align-items: start;
}

.mu-prose {
  min-width: 0;
  max-width: var(--content-width);
}

.mu-rail {
  position: sticky;
  top: 1.5rem;
  border-top: 2px solid var(--rule-strong);
  padding-top: 0.9rem;
  font-size: 0.88rem;
}

.mu-rail-list {
  list-style: none;
  padding: 0;
  margin: 0.5rem 0 1.4rem;
}

.mu-rail-list li {
  border-bottom: 1px solid var(--rule);
  padding: 0.42rem 0;
}

.mu-rail-list a {
  color: var(--ink);
  text-decoration: none;
}

.mu-rail-list a:hover {
  color: var(--accent);
}

/* Stepper Timeline & Directory Grids */
.mu-stepper-track {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0;
  border-left: 2px solid var(--rule-strong);
}

.mu-step-item {
  position: relative;
  padding: 0 0 1.65rem 1.5rem;
}

.mu-step-tag {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent);
  font-weight: 700;
}

.mu-index-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.5rem;
  margin: 1.5rem 0;
}

.mu-index-item {
  border-top: 2px solid var(--rule-strong);
  padding-top: 0.85rem;
}

.mu-svg-frame {
  margin: 1.5rem 0;
  background: var(--bg-elevated);
  border: 1px solid var(--rule);
  padding: 1rem;
}

.mu-svg-frame svg {
  width: 100%;
  height: auto;
  display: block;
}

/* Silent Archival Disclosures */
.mu-archive-ledger {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--rule);
}

.ref-disclosure {
  background: var(--bg-surface);
  border-left: 3px solid var(--accent-warm);
  padding: 0.75rem 1.1rem;
  margin-bottom: 0.75rem;
}

.ref-disclosure summary {
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 0.84rem;
  font-weight: 700;
  color: var(--ink);
}

.faq-item {
  border-bottom: 1px solid var(--rule);
  padding: 1rem 0;
}

.faq-q {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.05rem;
  margin: 0 0 0.45rem;
}

.faq-a {
  margin: 0;
  color: var(--ink-muted);
  max-width: var(--content-width);
}

.faq-src {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--ink-muted);
  margin: 0.4rem 0 0;
}

/* Clean Three-Column Human Footer */
.mu-footer {
  background: var(--bg-surface);
  border-top: 2px solid var(--rule-strong);
  padding: 2.25rem 0;
  margin-top: 2.5rem;
}

.mu-footer-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr;
  gap: 2rem;
}

.mu-footer-list {
  list-style: none;
  padding: 0;
  margin: 0.5rem 0 0;
}

.mu-footer-list li {
  margin-bottom: 0.35rem;
  font-size: 0.9rem;
}

.mu-footer-copy {
  margin-top: 1.65rem;
  padding-top: 1rem;
  border-top: 1px solid var(--rule);
  font-size: 0.84rem;
  color: var(--ink-muted);
}

.small {
  font-size: 0.85rem;
}

@media (max-width: 980px) {
  .mu-hero-split,
  .mu-decoder-grid,
  .mu-guide-grid,
  .mu-footer-grid,
  .mu-index-list {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  .mu-rail {
    position: static;
  }
  .cie-swatch-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .mu-oxide-bars {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 560px) {
  .cie-swatch-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    transition-duration: 0.001ms !important;
  }
}

@media print {
  .mu-header, .swatch-ribbon-bar, .mu-footer, .mu-rail {
    display: none;
  }
  body {
    background: #FFFFFF;
  }
}