/* =================================================================
   PRODUCT PARTNERS — DESIGN SYSTEM · styles.css
   ================================================================= */

/* ---- Real brand fonts ------------------------------------------------
   Saans (sans) and Abstract (serif) ship locally as woff2; Antarctican
   Mono (mono) loads from Adobe Fonts via the Typekit <link> in index.html
   as the family "antarctican-mono". Every component maps via --font-*.
   --------------------------------------------------------------------- */
/* Saans — primary sans */
@font-face { font-family:"Saans"; src:url("fonts/Saans-Light.woff2")      format("woff2"); font-weight:300; font-style:normal; font-display:swap; }
@font-face { font-family:"Saans"; src:url("fonts/Saans-LightItalic.woff2")format("woff2"); font-weight:300; font-style:italic; font-display:swap; }
@font-face { font-family:"Saans"; src:url("fonts/Saans-Regular.woff2")    format("woff2"); font-weight:400; font-style:normal; font-display:swap; }
@font-face { font-family:"Saans"; src:url("fonts/Saans-RegularItalic.woff2")format("woff2");font-weight:400;font-style:italic; font-display:swap; }
@font-face { font-family:"Saans"; src:url("fonts/Saans-Medium.woff2")     format("woff2"); font-weight:500; font-style:normal; font-display:swap; }
@font-face { font-family:"Saans"; src:url("fonts/Saans-MediumItalic.woff2")format("woff2");font-weight:500; font-style:italic; font-display:swap; }
@font-face { font-family:"Saans"; src:url("fonts/Saans-SemiBold.woff2")   format("woff2"); font-weight:600; font-style:normal; font-display:swap; }
@font-face { font-family:"Saans"; src:url("fonts/Saans-SemiBoldItalic.woff2")format("woff2");font-weight:600;font-style:italic;font-display:swap; }
@font-face { font-family:"Saans"; src:url("fonts/Saans-Bold.woff2")       format("woff2"); font-weight:700; font-style:normal; font-display:swap; }
@font-face { font-family:"Saans"; src:url("fonts/Saans-BoldItalic.woff2") format("woff2"); font-weight:700; font-style:italic; font-display:swap; }
@font-face { font-family:"Saans"; src:url("fonts/Saans-Heavy.woff2")      format("woff2"); font-weight:800; font-style:normal; font-display:swap; }
@font-face { font-family:"Saans"; src:url("fonts/Saans-HeavyItalic.woff2")format("woff2"); font-weight:800; font-style:italic; font-display:swap; }
/* Abstract — secondary serif */
@font-face { font-family:"Abstract Serif"; src:url("fonts/abstract-thin-webfont.woff2")   format("woff2"); font-weight:200; font-style:normal; font-display:swap; }
@font-face { font-family:"Abstract Serif"; src:url("fonts/abstract-regular-webfont.woff2")format("woff2"); font-weight:400; font-style:normal; font-display:swap; }

/* ---- Primitive tokens (brand source of truth) ----------------------- */
:root {
  --c-black:      #171212;
  --c-gray-dark:  #706F6B;
  --c-gray-med:   #93918A;
  --c-gray-light: #C3C1BB;
  --c-offwhite:   #EDEBE9;   /* corrected from the lilac #DEDBE9 */
  --c-white:      #FFFFFF;
  --c-burgundy:   #370100;
  --c-orange:     #D35F1C;
  --c-red:        #D13119;

  --font-sans:  "Saans", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-serif: "Abstract Serif", Georgia, "Times New Roman", serif;
  --font-mono:  "antarctican-mono", ui-monospace, "SF Mono", Menlo, monospace;

  --sidebar-w: 248px;
  --maxw: 1080px;
  --pad: clamp(20px, 4vw, 64px);
  --radius: 14px;
  --radius-sm: 9px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* ---- Semantic chrome tokens · LIGHT (default) ----------------------- */
:root,
:root[data-theme="light"] {
  --bg:        #FFFFFF;
  --bg-elev:   #FFFFFF;
  --bg-sunken: #FAF9F8;
  --text:      #171212;
  --text-2:    #706F6B;
  --text-3:    #93918A;
  --line:        rgba(23, 18, 18, 0.10);
  --line-2:      rgba(23, 18, 18, 0.16);
  --hover:       rgba(23, 18, 18, 0.04);
  --accent:    #D13119;          /* primary red */
  --code-bg:     rgba(23, 18, 18, 0.05);
  --shadow:      0 1px 2px rgba(23,18,18,.04);
  color-scheme: light;
}

/* ---- Semantic chrome tokens · DARK (palette-only) ------------------- */
:root[data-theme="dark"] {
  --bg:        #171212;          /* Black */
  --bg-elev:     rgba(255, 255, 255, 0.045);
  --bg-sunken:   rgba(0, 0, 0, 0.30);
  --text:      #FFFFFF;          /* White */
  --text-2:    #C3C1BB;          /* Light Gray */
  --text-3:    #93918A;          /* Medium Gray */
  --line:        rgba(255, 255, 255, 0.13);
  --line-2:      rgba(255, 255, 255, 0.22);
  --hover:       rgba(255, 255, 255, 0.06);
  --accent:    #D35F1C;          /* Orange — holds 4.5:1 on black */
  --code-bg:     rgba(255, 255, 255, 0.08);
  --shadow:      0 1px 2px rgba(0,0,0,.3);
  color-scheme: dark;
}

/* ---- Reset ----------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--text);
  background: var(--bg);
  line-height: 1.5;
  letter-spacing: -0.01em;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  transition: background .3s var(--ease), color .3s var(--ease);
}
img, svg { display: block; max-width: 100%; }
button { font: inherit; cursor: pointer; border: 0; background: none; color: inherit; }
a { color: inherit; text-decoration: none; }
code {
  font-family: var(--font-mono); font-size: 0.86em;
  background: var(--code-bg); padding: 0.12em 0.4em; border-radius: 5px;
}
sup { font-size: 0.62em; vertical-align: super; }

.skip-link {
  position: absolute; left: -999px; top: 0; z-index: 100;
  background: var(--text); color: var(--bg);
  padding: 10px 16px; border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 0; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }

/* =================================================================
   LOGO RENDERING (real assets, recolorable)
   ================================================================= */
.logo { display: inline-block; line-height: 0; }
.logo svg { display: block; width: auto; }
.logo--lockup svg { height: var(--h, 30px); }
.logo--lockup .lk-word { fill: currentColor; }
.logo--lockup .lk-sym  { fill: var(--sym, var(--c-red)); }
.logo--symbol svg { height: var(--symh, 40px); }
.logo--symbol .lk-sym, .logo--symbol path { fill: currentColor; }
.logo--word svg { height: var(--wh, 24px); }
.logo--v { display: inline-flex; flex-direction: column; align-items: center; gap: 16px; }
.logo--v .logo__sym svg { height: var(--vsymh, 56px); }
.logo--v .logo__word svg { height: var(--vwordh, 19px); }

/* =================================================================
   SIDEBAR
   ================================================================= */
.sidebar {
  position: fixed; inset: 0 auto 0 0;
  width: var(--sidebar-w);
  padding: 30px 26px;
  display: flex; flex-direction: column; gap: 36px;
  border-right: 1px solid var(--line);
  background: var(--bg);
  z-index: 20;
  transition: background .3s var(--ease), border-color .3s var(--ease);
}
.brand { display: block; color: var(--text); }
.brand .logo--lockup svg { height: 22px; }
.nav { display: flex; flex-direction: column; gap: 2px; }
.nav__link {
  display: flex; align-items: baseline; gap: 12px;
  padding: 11px 14px; border-radius: var(--radius-sm);
  font-size: 15px; font-weight: 500; color: var(--text-2);
  letter-spacing: -0.02em;
  transition: background .2s var(--ease), color .2s var(--ease);
}
.nav__link:hover { background: var(--hover); color: var(--text); }
.nav__link.is-active { background: var(--text); color: var(--bg); }
.nav__idx { font-family: var(--font-mono); font-size: 11px; opacity: 0.6; letter-spacing: 0; }
.nav__link.is-active .nav__idx { opacity: 0.55; }

.sidebar__foot { margin-top: auto; display: flex; flex-direction: column; gap: 18px; }
.theme-switch {
  display: flex; align-items: center; gap: 10px;
  width: 100%; padding: 10px 12px;
  border: 1px solid var(--line); border-radius: 100px;
  color: var(--text-2); font-size: 13px; font-weight: 500; letter-spacing: -0.02em;
  transition: border-color .2s var(--ease), color .2s var(--ease), background .2s var(--ease);
}
.theme-switch:hover { border-color: var(--line-2); color: var(--text); }
.theme-switch__icon { width: 16px; height: 16px; flex: none; }
.theme-switch__label { flex: 1; text-align: left; }
.theme-switch .moon { display: none; }
:root[data-theme="dark"] .theme-switch .moon { display: block; }
:root[data-theme="dark"] .theme-switch .sun { display: none; }
.sidebar__meta { font-family: var(--font-mono); font-size: 11px; letter-spacing: -0.02em; color: var(--text-3); margin: 0; }

/* =================================================================
   MAIN / PAGES
   ================================================================= */
.main { margin-left: var(--sidebar-w); }
.page { display: none; padding: clamp(40px, 6vw, 88px) var(--pad) 40px; max-width: calc(var(--maxw) + var(--pad) * 2); }
.page.is-active { display: block; animation: fade .45s var(--ease); }
@keyframes fade { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

.page__head { max-width: 760px; margin-bottom: clamp(40px, 6vw, 72px); }
.page__head-row { display: flex; justify-content: space-between; align-items: flex-start; gap: 24px; flex-wrap: wrap; }
.page__title { font-size: clamp(44px, 7vw, 76px); font-weight: 400; letter-spacing: -0.05em; line-height: 0.95; margin: 10px 0 0; color: var(--text); }
.page__lead { font-size: clamp(16px, 1.6vw, 19px); color: var(--text-2); max-width: 640px; margin: 22px 0 0; line-height: 1.5; }
.page__lead strong { color: var(--text); font-weight: 500; }
.eyebrow { font-family: var(--font-mono); font-weight: 500; font-size: 12px; letter-spacing: -0.02em; text-transform: uppercase; color: var(--accent); margin: 0; }

.block { padding: clamp(36px, 5vw, 56px) 0; border-top: 1px solid var(--line); }
.block__title { font-size: clamp(22px, 2.4vw, 28px); font-weight: 500; letter-spacing: -0.035em; margin: 0 0 8px; color: var(--text); }
.block__head-row { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-bottom: 8px; }
.block__head-row .block__title { margin-bottom: 0; }
.block__desc { color: var(--text-2); max-width: 640px; margin: 0 0 32px; }
.sub { font-family: var(--font-mono); font-size: 12px; font-weight: 500; text-transform: uppercase; letter-spacing: -0.01em; color: var(--text-2); margin: 40px 0 16px; }
.sub:first-of-type { margin-top: 0; }

.grid { display: grid; gap: 18px; }
.grid--logos    { grid-template-columns: repeat(2, 1fr); }
.grid--variants { grid-template-columns: repeat(3, 1fr); }
.grid--two      { grid-template-columns: 1fr 1fr; gap: 22px; }
.grid--three    { grid-template-columns: repeat(3, 1fr); }
.grid--guides   { grid-template-columns: 1fr 1fr; gap: 22px; }
.grid--apps     { grid-template-columns: repeat(3, 1fr); }
.grid--swatches { grid-template-columns: repeat(5, 1fr); gap: 14px; }
.grid--semantic { grid-template-columns: repeat(4, 1fr); gap: 14px; }

/* =================================================================
   LOGO PAGE
   ================================================================= */
.logo-card { margin: 0; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: var(--bg-elev); transition: border-color .2s var(--ease); }
.logo-card:hover { border-color: var(--line-2); }
.logo-card figcaption, .spec-card figcaption, .app-card figcaption {
  font-family: var(--font-mono); font-size: 11px; letter-spacing: -0.02em; color: var(--text-2);
  padding: 13px 18px; border-top: 1px solid var(--line); background: var(--bg-elev);
}
/* demonstration stages stay on fixed light / dark backgrounds */
.logo-stage {
  display: grid; place-items: center; padding: 44px 28px; min-height: 150px;
  background:
    linear-gradient(rgba(23,18,18,0.012), rgba(23,18,18,0.012)),
    repeating-conic-gradient(rgba(23,18,18,0.02) 0% 25%, transparent 0% 50%) 0 0 / 22px 22px,
    #FFFFFF;
}
.logo-card--dark .logo-stage { background: #171212; }
.logo-card--dark figcaption { background: #171212; color: var(--c-gray-light); border-top-color: rgba(255,255,255,0.1); }
.logo-stage--inline { padding: 0; min-height: 0; background: none; place-items: start; }

/* download table */
.dl-table { border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: var(--bg-elev); }
.dl-row { display: grid; grid-template-columns: 132px 1fr auto; align-items: center; gap: 20px; padding: 16px 20px; border-top: 1px solid var(--line); }
.dl-row:first-child { border-top: 0; }
.dl-preview { display: grid; place-items: center; height: 56px; border-radius: 10px; background: #FFFFFF; padding: 0 16px; }
.dl-preview .logo-stage--inline { place-items: center; }
.dl-row--dark .dl-preview { background: #171212; }
.dl-meta { display: flex; flex-direction: column; gap: 3px; }
.dl-meta strong { font-weight: 500; font-size: 14px; letter-spacing: -0.02em; color: var(--text); }
.dl-meta span { font-size: 12.5px; color: var(--text-2); letter-spacing: -0.01em; }
.dl-actions { display: flex; gap: 8px; }
.dl-btn {
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0; color: var(--text);
  background: var(--bg); border: 1px solid var(--line-2); border-radius: 8px;
  padding: 8px 14px; cursor: pointer; transition: border-color .15s var(--ease), background .15s var(--ease);
}
.dl-btn:hover { border-color: var(--accent); color: var(--accent); }

/* clear space */
.spec-card { margin: 0; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: var(--bg-elev); }
.clearspace { display: grid; place-items: center; padding: 40px; min-height: 230px; background: #FFFFFF; }
.clearspace__frame { position: relative; padding: var(--cs, 30px); border: 1px dashed var(--c-gray-light); }
.cs-tick { position: absolute; font-family: var(--font-mono); font-size: 10px; color: var(--c-red); letter-spacing: -0.02em; }
.cs-tick--top { top: 7px; left: 50%; transform: translateX(-50%); }
.cs-tick--left { left: 7px; top: 50%; transform: translateY(-50%); }
.spec-card--sizes { display: flex; flex-direction: column; }
.sizes { padding: 32px; display: flex; flex-direction: column; gap: 28px; flex: 1; justify-content: center; }
.size-row { display: flex; align-items: center; gap: 26px; }
.size-meta { display: flex; flex-direction: column; gap: 3px; }
.size-meta strong { font-size: 14px; font-weight: 600; letter-spacing: -0.02em; color: var(--text); }
.size-meta span { font-family: var(--font-mono); font-size: 11px; color: var(--text-2); letter-spacing: -0.02em; }

/* guides */
.guide { border: 1px solid var(--line); border-radius: var(--radius); padding: 26px 28px; background: var(--bg-elev); }
.guide__tag { display: inline-block; font-family: var(--font-mono); font-size: 11px; font-weight: 500; letter-spacing: -0.02em; text-transform: uppercase; color: var(--text); border: 1px solid var(--line-2); border-radius: 100px; padding: 4px 11px; margin-bottom: 18px; }
.guide__tag--dont { color: var(--c-red); border-color: rgba(209,49,25,0.35); }
.guide ul { margin: 0; padding-left: 18px; display: flex; flex-direction: column; gap: 11px; }
.guide li { color: var(--text-2); font-size: 14.5px; line-height: 1.45; }
.guide li strong { color: var(--text); font-weight: 600; }
.guide--dont li::marker { color: var(--c-red); }
.guide__foot { margin: 18px 0 0; font-size: 13.5px; color: var(--text-2); }
.guide__foot strong { color: var(--text); }

/* application mocks (fixed presentations) */
.app-card { margin: 0; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.mock { background: #FFFFFF; min-height: 200px; color: #171212; }
.mock--shot { padding: 0; overflow: hidden; }
.mock-shot-img { width: 100%; height: auto; display: block; }
.mock--social { padding: 0; overflow: hidden; }
.mock-social-img { width: 100%; height: auto; display: block; }

/* =================================================================
   TYPOGRAPHY PAGE
   ================================================================= */
.font-sans  { font-family: var(--font-sans); }
.font-serif { font-family: var(--font-serif); }
.font-mono  { font-family: var(--font-mono); }
.type-family { border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; background: var(--bg-elev); }
.type-family__role { font-family: var(--font-mono); font-size: 11px; text-transform: uppercase; letter-spacing: -0.02em; color: var(--accent); margin: 0 0 18px; }
.type-family__name { font-size: 40px; letter-spacing: -0.04em; margin: 0 0 6px; line-height: 1; color: var(--text); }
.type-family__sample { font-size: 20px; color: var(--text-2); margin: 0 0 18px; letter-spacing: -0.01em; }
.type-family__use { font-size: 13.5px; color: var(--text-2); margin: 0; line-height: 1.45; }
.note { margin: 28px 0 0; padding: 18px 20px; border: 1px solid var(--line); border-left: 3px solid var(--c-orange); border-radius: var(--radius-sm); background: var(--bg-sunken); font-size: 13.5px; color: var(--text-2); line-height: 1.5; }
.note__tag { display: inline-block; font-family: var(--font-mono); font-size: 10px; text-transform: uppercase; color: var(--c-orange); margin-right: 8px; letter-spacing: 0; }

.scale { display: flex; flex-direction: column; }
.scale-row { display: grid; grid-template-columns: 1fr 280px; gap: 40px; padding: 34px 0; border-top: 1px solid var(--line); align-items: center; }
.scale-row:first-child { border-top: 0; }
.scale-row__spec h3 { font-size: 15px; font-weight: 600; letter-spacing: -0.02em; margin: 0 0 14px; color: var(--text); }
.scale-row__spec dl { display: grid; grid-template-columns: auto 1fr; gap: 7px 16px; margin: 0; }
.scale-row__spec dt { font-family: var(--font-mono); font-size: 11px; color: var(--text-3); letter-spacing: -0.02em; }
.scale-row__spec dd { margin: 0; font-size: 13px; font-weight: 500; letter-spacing: -0.01em; color: var(--text); }

.t-eyebrow { font-family: var(--font-mono); font-weight: 500; font-size: 13px; letter-spacing: -0.02em; text-transform: uppercase; color: var(--accent); margin: 0; }
.t-headline { font-family: var(--font-sans); font-weight: 400; font-size: clamp(30px, 4.4vw, 52px); letter-spacing: -0.05em; line-height: 1; margin: 0; color: var(--text); }
.t-headline .ser { font-family: var(--font-serif); font-style: normal; font-weight: 400; letter-spacing: -0.03em; color: var(--accent); }
.t-body { font-family: var(--font-sans); font-weight: 400; font-size: 18px; letter-spacing: 0; line-height: 1.35; color: var(--text-2); margin: 0; max-width: 54ch; }
.t-body-emphasis { font-family: var(--font-sans); font-weight: 500; font-size: 18px; letter-spacing: 0; line-height: 1.35; margin: 0; color: var(--text); }
.t-tag { font-family: var(--font-mono); font-weight: 500; font-size: 14px; letter-spacing: 0; color: var(--text); margin: 0; }
.t-tag sup { color: var(--accent); }

.typeset { border: 1px solid var(--line); border-radius: var(--radius); padding: clamp(32px, 5vw, 64px); background: var(--bg-elev); max-width: 760px; }
.typeset__headline { font-family: var(--font-sans); font-weight: 400; font-size: clamp(32px, 5vw, 56px); letter-spacing: -0.05em; line-height: 1.04; margin: 18px 0 0; color: var(--text); }
.typeset__headline .ser { font-family: var(--font-serif); font-style: normal; font-weight: 400; letter-spacing: -0.03em; color: var(--accent); }
.typeset__body { font-size: 18px; line-height: 1.5; color: var(--text-2); margin: 26px 0 0; max-width: 56ch; }
.typeset__body strong { color: var(--text); font-weight: 500; }
.typeset__meta { margin: 26px 0 0; color: var(--text-3); font-size: 12.5px; }
.btn { display: inline-flex; align-items: center; gap: 9px; border-radius: 100px; font-weight: 500; font-size: 15px; letter-spacing: -0.02em; padding: 13px 24px; transition: transform .15s var(--ease), background .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease); }
.btn svg { width: 16px; height: 16px; }

/* Primary — solid Burgundy pill, white label */
.btn--primary { background: var(--c-burgundy); color: #FFFFFF; }
.btn--primary:hover { transform: translateY(-1px); opacity: .9; }

/* Primary (white) — white pill, Burgundy label, for dark / photographic surfaces */
.btn--white { background: #FFFFFF; color: var(--c-burgundy); }
.btn--white:hover { transform: translateY(-1px); opacity: .92; }

/* Secondary — outlined, inherits surface text color */
.btn--outline { background: transparent; border: 1px solid currentColor; color: inherit; }
.btn--outline:hover { transform: translateY(-1px); background: var(--hover); }

/* Tertiary — text link with rule + arrow */
.btn--link { padding: 0 0 8px; border-radius: 0; gap: 12px; color: inherit; border-bottom: 1px solid currentColor; }
.btn--link svg { transition: transform .2s var(--ease); }
.btn--link:hover svg { transform: translateX(4px); }

/* CTA in the typeset specimen — uses the primary Burgundy treatment */
.btn--cta { margin-top: 28px; background: var(--c-burgundy); color: #FFFFFF; padding: 14px 26px; }
.btn--cta:hover { transform: translateY(-1px); opacity: .9; }

/* Button specimen stages */
.btn-stages { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.btn-stage { border: 1px solid var(--line); border-radius: var(--radius); padding: 30px 26px; display: flex; flex-wrap: wrap; gap: 14px; align-items: center; }
.btn-stage--light { background: #FFFFFF; color: #171212; }
.btn-stage--dark { background: #171212; color: #FFFFFF; border-color: rgba(255,255,255,.14); }
.btn-spec { display: grid; grid-template-columns: 130px 1fr; gap: 6px 18px; margin: 22px 0 0; font-size: 13.5px; }
.btn-spec dt { color: var(--text); font-weight: 500; }
.btn-spec dd { margin: 0; color: var(--text-2); }
@media (max-width: 720px) { .btn-stages { grid-template-columns: 1fr; } }

/* =================================================================
   COLORS PAGE — primitive ramps
   ================================================================= */
.ramp { margin-bottom: 26px; }
.ramp:last-child { margin-bottom: 0; }
.ramp__head { display: flex; align-items: baseline; gap: 12px; margin-bottom: 10px; }
.ramp__name { font-size: 15px; font-weight: 600; letter-spacing: -0.02em; color: var(--text); margin: 0; }
.ramp__meta { font-family: var(--font-mono); font-size: 11px; color: var(--text-3); letter-spacing: -0.02em; }
.ramp__row { display: grid; grid-template-columns: repeat(6, 1fr); gap: 8px; }
.ramp__sw {
  display: flex; flex-direction: column; justify-content: space-between; gap: 18px;
  min-height: 96px; padding: 12px 13px; text-align: left;
  border-radius: var(--radius-sm); border: 1px solid var(--line);
  transition: transform .15s var(--ease), box-shadow .15s var(--ease);
}
.ramp__sw:hover { transform: translateY(-2px); box-shadow: 0 6px 18px rgba(0,0,0,.12); }
.ramp__step { font-family: var(--font-mono); font-size: 12px; font-weight: 700; letter-spacing: -0.02em; opacity: .9; }
.ramp__hex { font-family: var(--font-mono); font-size: 10.5px; letter-spacing: -0.04em; opacity: .82; }
.ramp__base { font-family: var(--font-mono); font-size: 8.5px; text-transform: uppercase; letter-spacing: 0; opacity: .6; }

/* core value cards */
.swatch { border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; background: var(--bg-elev); display: flex; flex-direction: column; }
.swatch__chip { height: 86px; width: 100%; border-bottom: 1px solid var(--line); }
.swatch__body { padding: 14px 15px 16px; display: flex; flex-direction: column; gap: 7px; }
.swatch__name { font-size: 14px; font-weight: 600; letter-spacing: -0.02em; margin: 0 0 3px; color: var(--text); }
.copy-row { display: flex; align-items: center; justify-content: space-between; gap: 8px; font-family: var(--font-mono); font-size: 11px; letter-spacing: -0.03em; color: var(--text-2); padding: 5px 8px; border-radius: 6px; border: 1px solid var(--line); background: var(--bg-elev); transition: border-color .15s var(--ease), background .15s var(--ease); width: 100%; text-align: left; }
.copy-row:hover { border-color: var(--line-2); background: var(--hover); }
.copy-row__label { color: var(--text-3); flex: none; }
.copy-row__val { color: var(--text); margin-left: auto; }
.copy-row__icon { flex: none; opacity: .45; transition: opacity .15s; }
.copy-row:hover .copy-row__icon { opacity: .8; }
.swatch__use { font-size: 12px; color: var(--text-2); margin: 4px 0 0; line-height: 1.4; }

/* semantic */
.sem { border: 1px solid var(--line); border-radius: var(--radius); padding: 18px; background: var(--bg-elev); display: flex; flex-direction: column; gap: 14px; }
.sem__group { font-family: var(--font-mono); font-size: 11px; text-transform: uppercase; letter-spacing: -0.02em; color: var(--accent); margin: 0; }
.sem__list { display: flex; flex-direction: column; gap: 9px; }
.sem__row { display: flex; align-items: center; gap: 11px; width: 100%; text-align: left; border-radius: 8px; padding: 6px; transition: background .15s var(--ease); }
.sem__row:hover { background: var(--hover); }
.sem__dot { width: 26px; height: 26px; border-radius: 7px; flex: none; border: 1px solid var(--line-2); }
.sem__meta { display: flex; flex-direction: column; gap: 1px; min-width: 0; }
.sem__role { font-size: 12.5px; font-weight: 500; letter-spacing: -0.02em; color: var(--text); }
.sem__val { font-family: var(--font-mono); font-size: 10.5px; color: var(--text-3); letter-spacing: -0.02em; }

/* status messages — low-opacity status fills for light-background banners.
   Fill = status @ 12% over white (lightest step that keeps neutral text well
   past AA while the hue still reads); full color carries the icon + hairline.
   Component is intentionally light-surface only, so text colors are fixed. */
.msg-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.msg { display: flex; gap: 12px; align-items: flex-start; padding: 14px 16px; border-radius: var(--radius-sm); border: 1px solid; }
.msg__icon { flex: none; width: 22px; height: 22px; border-radius: 6px; display: grid; place-items: center; color: #FFFFFF; }
.msg__icon svg { width: 14px; height: 14px; }
.msg__body { display: flex; flex-direction: column; gap: 2px; min-width: 0; }
.msg__title { font-size: 14px; font-weight: 600; letter-spacing: -0.02em; color: #171212; }
.msg__text { font-size: 13px; line-height: 1.45; color: #3A3633; }
.msg--success { background: color-mix(in srgb, #2F9E54 12%, #FFFFFF); border-color: color-mix(in srgb, #2F9E54 32%, #FFFFFF); }
.msg--success .msg__icon { background: #2F9E54; }
.msg--warning { background: color-mix(in srgb, #E5A019 12%, #FFFFFF); border-color: color-mix(in srgb, #E5A019 34%, #FFFFFF); }
.msg--warning .msg__icon { background: #E5A019; color: #3A2E00; }
.msg--error   { background: color-mix(in srgb, #D13119 12%, #FFFFFF); border-color: color-mix(in srgb, #D13119 32%, #FFFFFF); }
.msg--error   .msg__icon { background: #D13119; }
.msg--info    { background: color-mix(in srgb, #93918A 12%, #FFFFFF); border-color: color-mix(in srgb, #93918A 36%, #FFFFFF); }
.msg--info    .msg__icon { background: #93918A; }
@media (max-width: 720px) { .msg-grid { grid-template-columns: 1fr; } }

/* component theme-preview (self-contained, independent of page theme) */
.theme-toggle { display: inline-flex; align-items: center; gap: 4px; padding: 4px; border: 1px solid var(--line); border-radius: 100px; background: var(--bg-elev); }
.theme-toggle__label { font-family: var(--font-mono); font-size: 10px; text-transform: uppercase; color: var(--text-3); padding: 0 8px 0 6px; letter-spacing: 0; }
.theme-btn { padding: 7px 16px; border-radius: 100px; font-size: 13px; font-weight: 500; color: var(--text-2); letter-spacing: -0.02em; }
.theme-btn.is-active { background: var(--text); color: var(--bg); }

.theme-demo {
  border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden;
  --d-bg: #FFFFFF; --d-txt: #171212; --d-txt2: #706F6B; --accent: #D13119; --d-surface: #EDEBE9;
  --d-line: rgba(23,18,18,.1);
  /* Buttons use only the brand pair: Burgundy on light, White on dark surfaces */
  --d-btn-bg: var(--c-burgundy); --d-btn-txt: #FFFFFF;
  background: var(--d-bg); color: var(--d-txt);
  transition: background .35s var(--ease), color .35s var(--ease);
}
.theme-demo[data-mode="dark"] {
  --d-bg: #171212; --d-txt: #FFFFFF; --d-txt2: #C3C1BB; --accent: #D35F1C; --d-surface: #370100;
  --d-line: rgba(255,255,255,.12);
  --d-btn-bg: #FFFFFF; --d-btn-txt: var(--c-burgundy);
}
.td-nav { display: flex; align-items: center; justify-content: space-between; padding: 16px 22px; border-bottom: 1px solid var(--d-line); }
.td-nav__links { display: flex; gap: 16px; align-items: center; font-size: 13px; color: var(--d-txt2); letter-spacing: -0.02em; }
.td-cta { background: var(--d-btn-bg); color: var(--d-btn-txt); padding: 6px 13px; border-radius: 100px; font-weight: 500; }
.td-body { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; padding: clamp(22px, 3vw, 36px); }
.td-card { background: var(--d-surface); border-radius: var(--radius-sm); padding: 26px; color: var(--d-txt); transition: background .35s var(--ease); }
.theme-demo[data-mode="dark"] .td-card { color: #fff; }
.td-card__eyebrow { font-family: var(--font-mono); font-size: 11px; text-transform: uppercase; color: var(--accent); margin: 0 0 12px; letter-spacing: -0.01em; }
.td-card__title { font-size: 24px; font-weight: 400; letter-spacing: -0.04em; line-height: 1.02; margin: 0 0 12px; }
.td-card__text { font-size: 14px; line-height: 1.5; margin: 0 0 20px; opacity: .85; }
.td-btn { background: var(--d-btn-bg); color: var(--d-btn-txt); padding: 11px 20px; border-radius: 100px; font-size: 14px; font-weight: 500; letter-spacing: -0.02em; }
.td-btn:hover { filter: brightness(1.08); }
.td-copy { align-self: center; }
.td-copy__h { font-size: 19px; font-weight: 500; letter-spacing: -0.03em; margin: 0 0 12px; }
.td-copy__p { font-size: 15px; line-height: 1.5; color: var(--d-txt2); margin: 0 0 12px; max-width: 40ch; }
.td-copy__p--dim { opacity: .7; }
.td-link { color: var(--accent); font-weight: 500; font-size: 14px; border-bottom: 1px solid currentColor; padding-bottom: 1px; }

.contrast-strip { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 18px; }
.contrast-chip { display: flex; align-items: center; gap: 10px; border: 1px solid var(--line); border-radius: 100px; padding: 7px 14px 7px 8px; font-family: var(--font-mono); font-size: 11px; letter-spacing: -0.02em; color: var(--text-2); }
.contrast-chip__sample { width: 30px; height: 22px; border-radius: 5px; display: grid; place-items: center; font-size: 11px; font-weight: 700; }
.contrast-chip__ratio { color: var(--text); font-weight: 700; }
.contrast-chip__pass { color: #2a9d5c; }

.ratio-bar { display: flex; height: 12px; border-radius: 100px; overflow: hidden; margin: 20px 0 10px; }
.ratio-bar--tall { height: 18px; }
.ratio-legend { display: flex; gap: 16px; flex-wrap: wrap; font-family: var(--font-mono); font-size: 11px; color: var(--text-2); margin: 0; letter-spacing: -0.02em; }
.ratio-legend span { display: inline-flex; align-items: center; gap: 6px; }
.ratio-legend i { width: 10px; height: 10px; border-radius: 3px; display: inline-block; }

/* =================================================================
   TOAST + FOOTER
   ================================================================= */
.toast { position: fixed; bottom: 28px; left: 50%; transform: translate(-50%, 24px); background: var(--text); color: var(--bg); padding: 11px 20px; border-radius: 100px; font-size: 13px; font-weight: 500; letter-spacing: -0.02em; opacity: 0; pointer-events: none; transition: opacity .25s var(--ease), transform .25s var(--ease); z-index: 80; display: flex; align-items: center; gap: 9px; box-shadow: 0 8px 30px rgba(0,0,0,.18); }
.toast.is-visible { opacity: 1; transform: translate(-50%, 0); }
.toast__sw { width: 14px; height: 14px; border-radius: 4px; border: 1px solid rgba(128,128,128,.4); }
.footer { padding: 40px var(--pad); border-top: 1px solid var(--line); }
.footer p { font-family: var(--font-mono); font-size: 11px; color: var(--text-3); margin: 0; letter-spacing: -0.02em; }

/* =================================================================
   RESPONSIVE
   ================================================================= */
@media (max-width: 1100px) { .grid--variants { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 960px) {
  :root { --sidebar-w: 0px; }
  .sidebar { position: sticky; inset: 0 0 auto 0; width: auto; flex-direction: row; align-items: center; gap: 18px; padding: 12px 18px; overflow-x: auto; border-right: 0; border-bottom: 1px solid var(--line); }
  .nav { flex-direction: row; gap: 4px; }
  .nav__link { padding: 9px 14px; white-space: nowrap; }
  .nav__idx { display: none; }
  .sidebar__foot { margin: 0 0 0 auto; flex-direction: row; align-items: center; gap: 12px; }
  .sidebar__meta { display: none; }
  .theme-switch { width: auto; padding: 8px 14px; }
  .theme-switch__label { display: none; }
  .main { margin-left: 0; }
  .scale-row { grid-template-columns: 1fr; gap: 22px; }
  .grid--three, .grid--apps { grid-template-columns: 1fr; }
  .td-body { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
  .grid--logos, .grid--variants, .grid--two, .grid--guides { grid-template-columns: 1fr; }
  .grid--swatches { grid-template-columns: repeat(2, 1fr); }
  .grid--semantic { grid-template-columns: 1fr; }
  .ramp__row { grid-template-columns: repeat(3, 1fr); }
  .page__head-row { flex-direction: column; }
}
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto; } }