/* =============================================
   ContrastCheck – Main Stylesheet
   ============================================= */

/* ---------- CSS Custom Properties ---------- */
:root {
  --clr-primary:       #4f46e5;
  --clr-primary-dark:  #4338ca;
  --clr-primary-light: #e0e7ff;
  --clr-on-primary:    #ffffff;
  --clr-accent:        #f59e0b;

  --clr-bg:            #f8fafc;
  --clr-surface:       #ffffff;
  --clr-surface-2:     #f1f5f9;
  --clr-border:        #e2e8f0;

  --clr-text:          #1e293b;
  --clr-text-muted:    #526077;
  --clr-text-inverse:  #ffffff;
  --clr-border-strong: #7c8799;

  --clr-pass:          #15803d;
  --clr-pass-bg:       #dcfce7;
  --clr-fail:          #b91c1c;
  --clr-fail-bg:       #fee2e2;
  --clr-focus:         #4f46e5;

  --radius-sm:  6px;
  --radius-md:  10px;
  --radius-lg:  16px;
  --radius-xl:  24px;

  --shadow-sm:  0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);
  --shadow-md:  0 4px 12px rgba(0,0,0,.10), 0 2px 4px rgba(0,0,0,.06);
  --shadow-lg:  0 10px 30px rgba(0,0,0,.12), 0 4px 8px rgba(0,0,0,.06);

  --header-h:   64px;
  --transition: 0.2s ease;
}

/* ---------- Dark Theme ---------- */
[data-theme="dark"] {
  --clr-bg:          #0f172a;
  --clr-surface:     #1e293b;
  --clr-surface-2:   #273548;
  --clr-border:      #334155;
  --clr-text:        #e2e8f0;
  --clr-text-muted:  #94a3b8;
  --clr-primary:     #a5b4fc;
  --clr-primary-dark: #c7d2fe;
  --clr-primary-light: #312e81;
  --clr-on-primary:  #0f172a;
  --clr-text-inverse: #0f172a;
  --clr-border-strong: #7c8799;
  --clr-pass:        #86efac;
  --clr-pass-bg:     #14532d;
  --clr-fail:        #fca5a5;
  --clr-fail-bg:     #7f1d1d;
  --clr-focus:       #a5b4fc;
  --shadow-sm:  0 1px 3px rgba(0,0,0,.3);
  --shadow-md:  0 4px 12px rgba(0,0,0,.4);
  --shadow-lg:  0 10px 30px rgba(0,0,0,.5);
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--clr-bg);
  color: var(--clr-text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: background var(--transition), color var(--transition);
}
a { color: var(--clr-primary); text-decoration: none; }
a:hover { text-decoration: underline; }
ul { list-style: none; }
img, svg { display: block; }
button { cursor: pointer; font-family: inherit; }

/* ---------- Layout Helpers ---------- */
.container {
  width: 100%;
  max-width: 1100px;
  margin-inline: auto;
  padding-inline: 1.25rem;
}
main { flex: 1; }

/* =============================================
   HEADER
   ============================================= */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  background: var(--clr-surface);
  border-bottom: 1px solid var(--clr-border);
  box-shadow: var(--shadow-sm);
  transition: background var(--transition), border-color var(--transition);
}
.header-inner {
  height: 100%;
  display: flex;
  align-items: center;
  gap: 2rem;
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: .6rem;
  color: var(--clr-text);
  text-decoration: none;
  flex-shrink: 0;
}
.logo-icon { width: 36px; height: 36px; border-radius: 8px; }
.logo-text {
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -.5px;
  color: var(--clr-text);
}
.logo-text strong { color: var(--clr-primary); }

/* Nav */
.main-nav { margin-left: auto; }
.main-nav ul { display: flex; gap: .25rem; }
.nav-link {
  display: block;
  padding: .45rem .9rem;
  border-radius: var(--radius-sm);
  color: var(--clr-text-muted);
  font-size: .95rem;
  font-weight: 500;
  transition: background var(--transition), color var(--transition);
}
.nav-link:hover, .nav-link.active {
  background: var(--clr-primary-light);
  color: var(--clr-primary);
  text-decoration: none;
}

/* Header actions */
.header-actions { display: flex; align-items: center; gap: .5rem; }

.btn-icon {
  width: 38px; height: 38px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--clr-border);
  background: var(--clr-surface);
  color: var(--clr-text-muted);
  display: flex; align-items: center; justify-content: center;
  transition: background var(--transition), color var(--transition), border-color var(--transition);
}
.btn-icon:hover { background: var(--clr-surface-2); color: var(--clr-text); }
.btn-icon .icon { width: 18px; height: 18px; }

/* Theme toggle icon swap */
:root:not([data-theme="dark"]) .moon-icon { display: none; }
[data-theme="dark"] .sun-icon { display: none; }

/* Mobile menu button */
.btn-mobile-menu {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 38px; height: 38px;
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-sm);
  background: transparent;
  padding: 8px;
}
.btn-mobile-menu span {
  display: block;
  height: 2px;
  background: var(--clr-text);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

/* =============================================
   HERO SECTION
   ============================================= */
.hero {
  background: var(--rm-hero-bg);
  padding: 3rem 0 2.5rem;
  text-align: center;
  color: #fff;
}
.hero h1 {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  font-weight: 800;
  letter-spacing: -.5px;
  margin-bottom: .6rem;
}
.hero p {
  font-size: 1.05rem;
  max-width: 560px;
  margin-inline: auto;
}

/* =============================================
   CONVERTER CARD
   ============================================= */
.converter-section { padding: 2.5rem 0 3rem; }

.converter-card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  transition: background var(--transition), border-color var(--transition);
}

/* Case conversion buttons */
.case-buttons-section { padding: 1.25rem 1.25rem .75rem; }
.case-buttons-section h2 {
  font-size: .75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--clr-text-muted);
  margin-bottom: .85rem;
}
/* Divider */
.section-divider { height: 1px; background: var(--clr-border); margin: 0 1.25rem; }

/* Action toolbar */
.action-bar {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
  padding: 1rem 1.25rem;
  align-items: center;
}

.action-btn {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .5rem 1rem;
  border-radius: var(--radius-md);
  border: 1.5px solid var(--clr-border);
  background: var(--clr-surface);
  color: var(--clr-text);
  font-size: .875rem;
  font-weight: 500;
  transition: background var(--transition), border-color var(--transition), color var(--transition);
}
.action-btn svg { width: 15px; height: 15px; flex-shrink: 0; }
.action-btn:hover {
  background: var(--clr-surface-2);
  border-color: var(--clr-primary);
  color: var(--clr-primary);
}
.action-btn.danger:hover {
  border-color: #ef4444;
  color: #ef4444;
}
.action-btn.success {
  border-color: #22c55e;
  color: #22c55e;
}

.ml-auto { margin-left: auto; }

/* Toast notification */
.toast {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--clr-text);
  color: var(--clr-text-inverse);
  padding: .65rem 1.4rem;
  border-radius: var(--radius-lg);
  font-size: .9rem;
  font-weight: 500;
  box-shadow: var(--shadow-lg);
  z-index: 999;
  opacity: 0;
  transition: transform .3s ease, opacity .3s ease;
  pointer-events: none;
  white-space: nowrap;
}
.toast.show {
  transform: translateX(-50%) translateY(0);
  opacity: 1;
}

/* ---------- Accessibility helpers ---------- */
:focus-visible {
  outline: 3px solid var(--clr-focus);
  outline-offset: 2px;
}
.skip-link {
  position: absolute;
  left: 1rem;
  top: -100px;
  z-index: 1000;
  background: var(--clr-primary);
  color: var(--clr-on-primary);
  padding: .5rem 1rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
}
.skip-link:focus { top: .75rem; }

/* =============================================
   COLOR INPUTS
   ============================================= */
.color-inputs {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  gap: 1rem;
  align-items: start;
  padding: 1.5rem 1.25rem 1.25rem;
}
.color-field { min-width: 0; }
.color-field label {
  display: block;
  font-size: .75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--clr-text-muted);
  margin-bottom: .5rem;
}
.color-control {
  display: flex;
  align-items: stretch;
  border: 1.5px solid var(--clr-border-strong);
  border-radius: var(--radius-md);
  background: var(--clr-surface);
  overflow: hidden;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.color-control:focus-within {
  border-color: var(--clr-primary);
  box-shadow: 0 0 0 3px var(--clr-primary-light);
}
.color-field.invalid .color-control { border-color: var(--clr-fail); }

.color-control input[type="color"] {
  width: 56px;
  min-height: 48px;
  flex-shrink: 0;
  border: none;
  border-right: 1.5px solid var(--clr-border);
  padding: 6px;
  background: var(--clr-surface);
  cursor: pointer;
}
.color-control input[type="color"]::-webkit-color-swatch-wrapper { padding: 0; }
.color-control input[type="color"]::-webkit-color-swatch { border: 1px solid rgba(0,0,0,.15); border-radius: var(--radius-sm); }
.color-control input[type="color"]::-moz-color-swatch { border: 1px solid rgba(0,0,0,.15); border-radius: var(--radius-sm); }
.color-control input[type="color"]:focus-visible { outline-offset: -4px; }

.color-control input[type="text"] {
  flex: 1;
  min-width: 0;
  padding: .7rem .9rem;
  border: none;
  outline: none;
  background: var(--clr-surface);
  color: var(--clr-text);
  font-family: 'JetBrains Mono', 'Courier New', monospace;
  font-size: 1rem;
}
.field-hint {
  font-size: .8rem;
  color: var(--clr-text-muted);
  margin-top: .4rem;
}
.field-error {
  font-size: .8rem;
  font-weight: 600;
  color: var(--clr-fail);
  margin-top: .25rem;
}
.field-error:empty { display: none; }

.swap-btn {
  margin-top: 1.75rem;
  width: 44px; height: 44px;
  border-radius: 50%;
  border: 1.5px solid var(--clr-border-strong);
  background: var(--clr-surface);
  color: var(--clr-text-muted);
  display: flex; align-items: center; justify-content: center;
  transition: background var(--transition), color var(--transition), border-color var(--transition), transform .2s;
}
.swap-btn svg { width: 18px; height: 18px; }
.swap-btn:hover {
  background: var(--clr-primary-light);
  border-color: var(--clr-primary);
  color: var(--clr-primary);
  transform: rotate(180deg);
}

/* =============================================
   RESULT + PREVIEW
   ============================================= */
.result-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
  gap: 1.25rem;
  padding: 1.25rem;
}
.result-panel h2,
.case-buttons-section h2 {
  font-size: .75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--clr-text-muted);
  margin-bottom: .5rem;
}
.ratio-display {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: .25rem .75rem;
}
.ratio-value {
  font-size: clamp(2.5rem, 7vw, 3.5rem);
  font-weight: 800;
  letter-spacing: -1px;
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
}
.ratio-rating {
  font-size: .9rem;
  font-weight: 700;
  padding: .2rem .7rem;
  border-radius: 999px;
}
.ratio-rating.good { background: var(--clr-pass-bg); color: var(--clr-pass); }
.ratio-rating.ok   { background: #fef3c7; color: #92400e; }
.ratio-rating.bad  { background: var(--clr-fail-bg); color: var(--clr-fail); }
[data-theme="dark"] .ratio-rating.ok { background: #78350f; color: #fde68a; }

.blend-note {
  font-size: .8rem;
  color: var(--clr-text-muted);
  margin-top: .35rem;
}

.badge-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: .6rem;
  margin-top: 1rem;
}
.badge {
  display: flex;
  align-items: center;
  gap: .65rem;
  padding: .65rem .8rem;
  border-radius: var(--radius-md);
  border: 1.5px solid var(--clr-border);
  background: var(--clr-surface);
}
.badge:last-child:nth-child(odd) { grid-column: 1 / -1; }
.badge-icon {
  width: 28px; height: 28px;
  flex-shrink: 0;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
}
.badge-icon svg { width: 16px; height: 16px; }
.badge.pass .badge-icon { background: var(--clr-pass-bg); color: var(--clr-pass); }
.badge.fail .badge-icon { background: var(--clr-fail-bg); color: var(--clr-fail); }
.badge-text { display: flex; flex-direction: column; line-height: 1.3; min-width: 0; }
.badge-title { font-size: .875rem; font-weight: 600; }
.badge-sub { font-size: .75rem; color: var(--clr-text-muted); }
.badge-status { margin-left: auto; font-size: .8rem; font-weight: 700; }
.badge.pass .badge-status { color: var(--clr-pass); }
.badge.fail .badge-status { color: var(--clr-fail); }

.preview-panel {
  border-radius: var(--radius-lg);
  border: 1px solid var(--clr-border);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: .75rem;
  transition: background var(--transition), color var(--transition);
}
.preview-large  { font-size: 1.5rem; font-weight: 700; line-height: 1.25; }
.preview-normal { font-size: 1rem; }
.preview-small  { font-size: .875rem; }
.preview-ui {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .75rem 1rem;
  margin-top: .25rem;
}
.preview-button {
  display: inline-block;
  padding: .45rem 1.1rem;
  border: 2px solid currentColor;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: .9rem;
}
.preview-icon {
  width: 34px; height: 34px;
  border: 2px solid currentColor;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
}
.preview-icon svg { width: 18px; height: 18px; }
.preview-link { text-decoration: underline; font-weight: 500; }

/* =============================================
   SUGGESTIONS
   ============================================= */
.suggest-intro {
  font-size: .875rem;
  color: var(--clr-text-muted);
  margin-bottom: .85rem;
}
.suggest-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: .6rem;
  padding-bottom: .5rem;
}
.suggest-item {
  display: flex;
  align-items: center;
  gap: .75rem;
  padding: .6rem .75rem;
  border: 1.5px solid var(--clr-border);
  border-radius: var(--radius-md);
  background: var(--clr-surface);
  min-width: 0;
}
.suggest-swatch {
  width: 44px; height: 36px;
  flex-shrink: 0;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(0,0,0,.15);
  display: flex; align-items: center; justify-content: center;
  font-weight: 700;
  font-size: .95rem;
}
.suggest-text { display: flex; flex-direction: column; line-height: 1.3; min-width: 0; }
.suggest-label { font-size: .8rem; color: var(--clr-text-muted); }
.suggest-value {
  font-family: 'JetBrains Mono', 'Courier New', monospace;
  font-size: .85rem;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.suggest-item .action-btn { margin-left: auto; padding: .35rem .8rem; flex-shrink: 0; }
.suggest-done { margin-left: auto; font-size: .8rem; font-weight: 700; color: var(--clr-pass); flex-shrink: 0; }
.suggest-none { margin-left: auto; font-size: .8rem; color: var(--clr-text-muted); text-align: right; }

/* About demo rows */
.demo-row .swatch {
  font-family: 'JetBrains Mono', monospace;
  font-weight: 700;
  padding: .2rem .6rem;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255,255,255,.4);
}
.demo-row .label { opacity: 1; }

/* =============================================
   REFERENCE SECTION (case descriptions)
   ============================================= */
.reference-section {
  padding: 3rem 0;
  background: var(--clr-surface-2);
  border-top: 1px solid var(--clr-border);
}
.reference-section h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: .5rem;
}
.reference-section .section-subtitle {
  color: var(--clr-text-muted);
  margin-bottom: 2rem;
}
.reference-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
}
.ref-card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 1.25rem 1.4rem;
  transition: box-shadow var(--transition), transform var(--transition);
}
.ref-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.ref-card h3 { font-size: 1rem; font-weight: 600; margin-bottom: .35rem; }
.ref-card .example {
  font-family: 'JetBrains Mono', 'Courier New', monospace;
  font-size: .85rem;
  background: var(--clr-surface-2);
  color: var(--clr-primary);
  padding: .3rem .6rem;
  border-radius: var(--radius-sm);
  display: inline-block;
  margin-bottom: .5rem;
}
.ref-card p { font-size: .875rem; color: var(--clr-text-muted); }

/* =============================================
   ABOUT SECTION
   ============================================= */
#about {
  padding: 3.5rem 0;
}
.about-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}
.about-text h2 { font-size: 1.75rem; font-weight: 800; margin-bottom: 1rem; }
.about-text p { color: var(--clr-text-muted); line-height: 1.8; margin-bottom: .75rem; }
.feature-list { display: flex; flex-direction: column; gap: .65rem; margin-top: 1.25rem; }
.feature-item {
  display: flex;
  align-items: flex-start;
  gap: .75rem;
  font-size: .9rem;
}
.feature-icon {
  width: 30px; height: 30px; flex-shrink: 0;
  border-radius: 50%;
  background: var(--clr-primary-light);
  display: flex; align-items: center; justify-content: center;
  color: var(--clr-primary);
  font-size: 1rem;
  margin-top: .05rem;
}
.about-visual {
  background: var(--rm-hero-bg);
  border-radius: var(--radius-xl);
  padding: 2.5rem;
  color: #fff;
}
.demo-cases { display: flex; flex-direction: column; gap: .85rem; }
.demo-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(255,255,255,.12);
  border-radius: var(--radius-md);
  padding: .65rem 1rem;
  font-size: .88rem;
  backdrop-filter: blur(4px);
}
.demo-row .label { opacity: .8; font-weight: 500; }
.demo-row .value { font-weight: 700; font-family: 'JetBrains Mono', monospace; }

/* =============================================
   FOOTER
   ============================================= */
.site-footer {
  background: var(--clr-surface);
  border-top: 1px solid var(--clr-border);
  padding-top: 3rem;
  transition: background var(--transition);
}
.footer-inner {
  display: grid;
  grid-template-columns: 1.4fr 2fr;
  gap: 3rem;
  padding-bottom: 2.5rem;
}
.footer-brand .logo { margin-bottom: .75rem; }
.footer-tagline { font-size: .875rem; color: var(--clr-text-muted); max-width: 260px; line-height: 1.6; }
.footer-links { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.5rem; }
.footer-col h4 { font-size: .8rem; text-transform: uppercase; letter-spacing: 1px; color: var(--clr-text-muted); margin-bottom: .85rem; }
.footer-col li + li { margin-top: .45rem; }
.footer-col a { font-size: .875rem; color: var(--clr-text-muted); transition: color var(--transition); }
.footer-col a:hover { color: var(--clr-primary); text-decoration: none; }
.footer-bottom {
  border-top: 1px solid var(--clr-border);
  padding: 1.25rem 0;
  font-size: .8rem;
  color: var(--clr-text-muted);
}
.footer-bottom .container {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: .5rem;
}

/* =============================================
   RESPONSIVE
   ============================================= */
@media (max-width: 768px) {
  .main-nav {
    display: none;
    position: fixed;
    inset: var(--header-h) 0 0;
    background: var(--clr-surface);
    padding: 1.5rem 1.25rem;
    z-index: 99;
    flex-direction: column;
    gap: .35rem;
    border-top: 1px solid var(--clr-border);
  }
  .main-nav.open { display: flex; }
  .main-nav ul { flex-direction: column; }
  .nav-link { font-size: 1.1rem; padding: .75rem 1rem; }
  .btn-mobile-menu { display: flex; }
  .about-inner { grid-template-columns: 1fr; }
  .result-grid { grid-template-columns: 1fr; }
  .color-inputs { grid-template-columns: minmax(0, 1fr); }
  .swap-btn { margin: 0 auto; transform: rotate(90deg); }
  .swap-btn:hover { transform: rotate(270deg); }
  .footer-inner { grid-template-columns: 1fr; gap: 2rem; }
  .footer-links { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 480px) {
  .footer-links { grid-template-columns: 1fr; }
  .action-bar { gap: .4rem; }
  .action-btn { padding: .45rem .75rem; font-size: .8rem; }
  .badge-list, .suggest-list { grid-template-columns: 1fr; }
  .badge:last-child:nth-child(odd) { grid-column: auto; }
  .about-visual { padding: 1.5rem; }
}

@media (max-width: 900px) and (min-width: 481px) {
  .suggest-list { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; scroll-behavior: auto !important; }
}

/* =============================================
   Shared romelmasagca.com tool theme (../shared/rm-tools.css)
   Maps this tool's variables onto the --rm-* tokens, light and dark.
   ============================================= */
:root, :root[data-theme="dark"] {
  --clr-primary:       var(--rm-primary);
  --clr-primary-dark:  var(--rm-primary-hover);
  --clr-primary-light: var(--rm-primary-soft);
  --clr-on-primary:    var(--rm-primary-ink);
  --clr-accent:        var(--rm-amber);
  --clr-focus:         var(--rm-primary);
  --clr-bg:            var(--rm-bg);
  --clr-surface:       var(--rm-surface);
  --clr-surface-2:     var(--rm-surface-2);
  --clr-border:        var(--rm-border);
  --clr-border-strong: var(--rm-muted);
  --clr-text:          var(--rm-text);
  --clr-text-muted:    var(--rm-muted);
  --clr-text-inverse:  var(--rm-bg);
  --radius-sm:  var(--rm-radius-sm);
  --radius-md:  var(--rm-radius);
  --radius-lg:  var(--rm-radius);
  --radius-xl:  var(--rm-radius-lg);
  --shadow-sm:  var(--rm-shadow-sm);
  --shadow-md:  var(--rm-shadow-md);
  --shadow-lg:  var(--rm-shadow-lg);
  --transition: var(--rm-ease);
}
html { scroll-padding-top: 80px; }
/* Hero: the shared blueprint band in both themes */
.hero.rm-hero { background: var(--rm-hero-bg); color: var(--rm-hero-ink); }
.hero.rm-hero h1 { color: var(--rm-hero-ink); -webkit-text-fill-color: currentColor; background: none; font-weight: 700; line-height: 1.1; }
.hero.rm-hero p { color: var(--rm-hero-muted); opacity: 1; }