/* ============================================================
   EVOLVE BRAND CENTER — site layout & documentation components.
   Builds on colors_and_type.css (tokens + .t-* type classes).
   ============================================================ */

:root {
  --sidebar-w: 280px;
  --content-max: 940px;
}

html { scroll-behavior: smooth; }
body { background: var(--bg-page); }

/* ----------------------------------------------------------------
   App shell
---------------------------------------------------------------- */
.app {
  display: grid;
  grid-template-columns: var(--sidebar-w) minmax(0, 1fr);
  min-height: 100vh;
}

/* ----------------------------------------------------------------
   Sidebar (deep space)
---------------------------------------------------------------- */
.sidebar {
  position: sticky;
  top: 0;
  align-self: start;
  height: 100vh;
  overflow-y: auto;
  background: #000;
  border-right: 1px solid rgba(255,255,255,0.06);
  color: rgba(255,255,255,0.72);
  padding: var(--s-6) 0 var(--s-7);
  scrollbar-width: thin;
  scrollbar-color: rgba(255,255,255,0.18) transparent;
}
.sidebar::-webkit-scrollbar { width: 8px; }
.sidebar::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.16); border-radius: 99px; }

/* Reversed (all-white) treatment of the wordmark artwork for dark
   backgrounds — the design-system's own dark-slide technique. */
.wm-reversed { filter: brightness(0) invert(1); }

.brand-mark {
  display: block;
  padding: 4px var(--s-6) 0;
  text-decoration: none;
  text-align: center;
}
.brand-mark .wm-img { width: 108px; max-width: 100%; display: block; margin: 0 auto; }
.brand-sub {
  padding: 12px var(--s-6) var(--s-5);
  margin-bottom: var(--s-4);
  border-bottom: 1px solid rgba(255,255,255,0.07);
  text-align: center;
  font-family: var(--ff-display);
  font-weight: 500;
  font-size: 12px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.60);
}

.nav-group { padding: var(--s-5) var(--s-6) 0; }
.nav-group + .nav-group { padding-top: var(--s-5); }
.nav-group h4 {
  font-family: var(--ff-display);
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.20em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.36);
  margin: 0 0 var(--s-3);
}
.nav-group nav { display: flex; flex-direction: column; gap: 2px; }
.nav-group a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border-radius: var(--r-md);
  color: rgba(255,255,255,0.74);
  font-family: var(--ff-body);
  font-size: 0.95rem;
  line-height: 1.2;
  transition: background var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out);
}
.nav-group a svg { width: 17px; height: 17px; stroke-width: 1.7; flex: none; opacity: 0.8; }
.nav-group a:hover { background: rgba(255,255,255,0.06); color: #fff; }
.nav-group a.active {
  background: linear-gradient(90deg, rgba(123,9,107,0.55), rgba(123,9,107,0.18));
  color: #fff;
  box-shadow: inset 2px 0 0 var(--evolve-violet-400);
}
.nav-group a.active svg { opacity: 1; color: var(--cyan-glow); }

.sidebar-foot {
  padding: var(--s-6) var(--s-6) 0;
  margin-top: var(--s-6);
  border-top: 1px solid rgba(255,255,255,0.07);
}
.sidebar-foot p {
  font-family: var(--ff-mono);
  font-size: 11px;
  letter-spacing: 0.02em;
  color: rgba(255,255,255,0.40);
  margin: 0;
  line-height: 1.7;
}

/* ----------------------------------------------------------------
   Mobile top bar
---------------------------------------------------------------- */
.topbar { display: none; }

/* ----------------------------------------------------------------
   Content
---------------------------------------------------------------- */
.content { min-width: 0; }
.page {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: var(--s-9) var(--s-8) var(--s-10);
}
@media (max-width: 1100px) { .page { padding: var(--s-8) var(--s-7) var(--s-9); } }

.page-head { margin-bottom: var(--s-8); }
.page-head .t-eyebrow { color: var(--evolve-violet); }
.page-head h1 { margin: var(--s-3) 0 var(--s-4); }
.page-head .t-lede { max-width: 62ch; }

/* Section blocks */
section.block { margin-top: var(--s-9); scroll-margin-top: 90px; }
section.block:first-of-type { margin-top: var(--s-8); }
.block > h2 {
  margin: 0 0 var(--s-3);
  padding-bottom: var(--s-3);
  border-bottom: 1px solid var(--border-1);
}
.block > .lead { max-width: 64ch; margin: 0 0 var(--s-6); color: var(--fg-2); }
.subhead { margin: var(--s-7) 0 var(--s-4); }

/* Generic grid helpers */
.grid { display: grid; gap: var(--s-5); }
.grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid.cols-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 820px) {
  .grid.cols-2, .grid.cols-3, .grid.cols-4 { grid-template-columns: 1fr; }
  .grid.cols-4.keep-2, .grid.cols-3.keep-2 { grid-template-columns: 1fr 1fr; }
}

/* Card */
.card {
  background: var(--bg-surface);
  border: 1px solid var(--border-1);
  border-radius: var(--r-lg);
  padding: var(--s-6);
}
.card.flush { padding: 0; overflow: hidden; }
.card .t-h4 { margin: 0 0 var(--s-2); }
.card p:last-child { margin-bottom: 0; }
.card-accent { border-top: 2px solid var(--evolve-violet); }

/* ----------------------------------------------------------------
   Swatches
---------------------------------------------------------------- */
.swatch-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(168px, 1fr)); gap: var(--s-4); }
.swatch {
  border: 1px solid var(--border-1);
  border-radius: var(--r-md);
  overflow: hidden;
  background: var(--bg-surface);
  cursor: pointer;
  transition: box-shadow var(--dur-fast) var(--ease-out), transform var(--dur-fast) var(--ease-out);
}
.swatch:hover { box-shadow: var(--shadow-2); transform: translateY(-2px); }
.swatch .chip { height: 92px; display: flex; align-items: flex-end; padding: 10px; }
.swatch .chip .copied {
  font-family: var(--ff-mono); font-size: 10px; letter-spacing: 0.04em;
  background: rgba(255,255,255,0.9); color: var(--ink-900);
  padding: 2px 7px; border-radius: 99px; opacity: 0; transition: opacity var(--dur-fast);
}
.swatch.is-copied .chip .copied { opacity: 1; }
.swatch .meta { padding: 10px 12px 12px; }
.swatch .meta .name { font-family: var(--ff-display); font-weight: 500; font-size: 0.9rem; color: var(--fg-1); }
.swatch .meta .hex { font-family: var(--ff-mono); font-size: 12px; color: var(--fg-3); text-transform: uppercase; margin-top: 2px; }

/* ----------------------------------------------------------------
   Logo / asset display tiles
---------------------------------------------------------------- */
.logo-tile {
  border: 1px solid var(--border-1);
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--bg-surface);
}
.logo-tile .stage {
  display: flex; align-items: center; justify-content: center;
  min-height: 200px; padding: var(--s-7);
}
.logo-tile .stage.dark { background: var(--space-800); background-image: var(--grad-hero); }
.logo-tile .stage.violet { background: var(--evolve-violet); }
.logo-tile .stage.light { background: var(--ink-50); }
.logo-tile .stage img { max-width: 100%; max-height: 150px; display: block; }
.logo-tile .bar {
  display: flex; align-items: center; justify-content: space-between; gap: var(--s-4);
  padding: 14px var(--s-5); border-top: 1px solid var(--border-1);
}
.logo-tile .bar .label { font-family: var(--ff-display); font-weight: 500; font-size: 0.95rem; }
.logo-tile .bar .label small { display:block; font-family: var(--ff-body); font-weight:400; color: var(--fg-3); font-size: 0.8rem; }

/* Download button */
.dl {
  display: inline-flex; align-items: center; gap: 7px;
  font-family: var(--ff-display); font-weight: 500; font-size: 0.82rem;
  letter-spacing: 0.04em; text-transform: uppercase;
  color: var(--evolve-violet); border: 1px solid var(--border-2);
  padding: 7px 13px; border-radius: var(--r-pill); white-space: nowrap;
  transition: all var(--dur-fast) var(--ease-out);
}
.dl svg { width: 15px; height: 15px; stroke-width: 1.8; }
.dl:hover { background: var(--evolve-violet); color: #fff; border-color: var(--evolve-violet); }

/* ----------------------------------------------------------------
   Do / Don't
---------------------------------------------------------------- */
.dodont { display: grid; grid-template-columns: 1fr 1fr; gap: var(--s-5); }
@media (max-width: 820px) { .dodont { grid-template-columns: 1fr; } }
.dd {
  border: 1px solid var(--border-1); border-radius: var(--r-lg); overflow: hidden;
  display: flex; flex-direction: column;
}
.dd .vis { min-height: 150px; display: flex; align-items: center; justify-content: center; padding: var(--s-6); }
.dd .note { display: flex; gap: 10px; padding: var(--s-4) var(--s-5); border-top: 1px solid var(--border-1); align-items: flex-start; }
.dd .note svg { width: 18px; height: 18px; flex: none; margin-top: 2px; }
.dd .note p { margin: 0; font-size: 0.92rem; color: var(--fg-2); }
.dd.do .tag, .dd.dont .tag {
  display: inline-flex; align-items: center; gap: 6px; font-family: var(--ff-display);
  font-weight: 600; font-size: 0.72rem; letter-spacing: 0.1em; text-transform: uppercase;
}
.dd.do .note svg { color: var(--status-success); }
.dd.dont .note svg { color: var(--unic-red); }

/* ----------------------------------------------------------------
   Type specimens
---------------------------------------------------------------- */
.spec {
  border: 1px solid var(--border-1); border-radius: var(--r-lg);
  padding: var(--s-6); background: var(--bg-surface);
}
.spec + .spec { margin-top: var(--s-4); }
.spec .meta {
  display: flex; flex-wrap: wrap; gap: var(--s-4); align-items: baseline;
  margin-bottom: var(--s-4); padding-bottom: var(--s-3); border-bottom: 1px solid var(--border-1);
}
.spec .meta .tag { font-family: var(--ff-mono); font-size: 12px; color: var(--fg-3); }
.spec .meta .tag b { color: var(--fg-1); font-weight: 600; }
.spec .sample { color: var(--fg-1); }

.charset { font-family: var(--ff-display); font-size: 1.5rem; line-height: 1.7; color: var(--fg-2); letter-spacing: 0.01em; word-spacing: 4px; }
.weights { display: flex; flex-direction: column; gap: 6px; }
.weights .w { font-family: var(--ff-body); font-size: 1.55rem; display: flex; align-items: baseline; gap: var(--s-5); }
.weights .w span { font-family: var(--ff-mono); font-size: 12px; color: var(--fg-3); width: 130px; flex: none; }

/* Scale table */
.scale-row {
  display: grid; grid-template-columns: 110px 1fr; gap: var(--s-5); align-items: baseline;
  padding: var(--s-4) 0; border-bottom: 1px solid var(--border-1);
}
.scale-row .k { font-family: var(--ff-mono); font-size: 12px; color: var(--fg-3); }
.scale-row .v { color: var(--fg-1); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ----------------------------------------------------------------
   Tables
---------------------------------------------------------------- */
table.tbl { width: 100%; border-collapse: collapse; font-size: 0.95rem; }
table.tbl th, table.tbl td { text-align: left; padding: 12px 14px; border-bottom: 1px solid var(--border-1); vertical-align: top; }
table.tbl th { font-family: var(--ff-display); font-weight: 600; font-size: 0.78rem; letter-spacing: 0.06em; text-transform: uppercase; color: var(--fg-3); }
table.tbl td { color: var(--fg-2); }
table.tbl td:first-child { color: var(--fg-1); font-weight: 500; }
table.tbl tr:last-child td { border-bottom: none; }
table.tbl .yes { color: var(--evolve-violet); } table.tbl .no { color: var(--ink-500); }
.tbl-wrap { border: 1px solid var(--border-1); border-radius: var(--r-lg); overflow: hidden; }
.tbl-wrap table.tbl th, .tbl-wrap table.tbl td { padding-left: var(--s-5); padding-right: var(--s-5); }
.tbl-wrap table.tbl tr:first-child th { background: var(--bg-surface-2); }

/* ----------------------------------------------------------------
   Vocabulary use/avoid
---------------------------------------------------------------- */
.usepair { display: grid; grid-template-columns: 1fr 1fr; }
.usepair > div { padding: var(--s-5) var(--s-6); }
.usepair > div:first-child { border-right: 1px solid var(--border-1); }
.usepair h5 { margin: 0 0 var(--s-3); font-family: var(--ff-display); font-size: 0.78rem; letter-spacing: 0.08em; text-transform: uppercase; }
.usepair ul { margin: 0; padding: 0; list-style: none; display: flex; flex-direction: column; gap: 9px; }
.usepair li { display: flex; gap: 9px; align-items: flex-start; font-size: 0.96rem; color: var(--fg-1); }
.usepair li svg { width: 16px; height: 16px; flex: none; margin-top: 4px; }
.usepair .use li svg { color: var(--status-success); }
.usepair .avoid li svg { color: var(--ink-400, var(--ink-500)); }
.usepair .avoid li { color: var(--fg-3); }
@media (max-width: 680px){ .usepair { grid-template-columns: 1fr; } .usepair > div:first-child { border-right: none; border-bottom: 1px solid var(--border-1); } }

/* Pull quote */
.pullquote {
  border-left: 2px solid var(--evolve-violet);
  padding: var(--s-2) 0 var(--s-2) var(--s-6);
  margin: var(--s-6) 0;
}
.pullquote p { font-family: var(--ff-display); font-weight: 300; font-size: 1.5rem; line-height: 1.4; color: var(--fg-1); margin: 0; }
.pullquote cite { display: block; margin-top: var(--s-3); font-style: normal; font-family: var(--ff-mono); font-size: 12px; color: var(--fg-3); }

/* Callout */
.callout {
  display: flex; gap: var(--s-4); padding: var(--s-5);
  background: var(--evolve-violet-50); border: 1px solid var(--evolve-violet-200);
  border-radius: var(--r-lg); margin: var(--s-5) 0;
}
.callout svg { width: 20px; height: 20px; flex: none; color: var(--evolve-violet); margin-top: 2px; }
.callout p { margin: 0; color: var(--ink-800); font-size: 0.96rem; }
.callout strong { color: var(--ink-900); }

/* Components page bits */
.btn {
  font-family: var(--ff-display); font-weight: 500; font-size: 0.95rem; letter-spacing: 0.02em;
  border-radius: var(--r-pill); padding: 12px 26px; border: 1px solid transparent;
  cursor: pointer; transition: all var(--dur-base) var(--ease-out); display: inline-flex; align-items: center; gap: 8px;
}
.btn-primary { background: var(--evolve-violet); color: #fff; }
.btn-primary:hover { background: var(--evolve-violet-700); box-shadow: var(--shadow-violet-sm); transform: translateY(-1px); }
.btn-secondary { background: transparent; color: var(--evolve-violet); border-color: var(--border-2); }
.btn-secondary:hover { border-color: var(--evolve-violet); background: var(--evolve-violet-50); }
.btn-ghost { background: transparent; color: var(--fg-1); }
.btn-ghost:hover { background: var(--ink-100); }
.btn-uc { text-transform: uppercase; letter-spacing: 0.08em; font-size: 0.8rem; font-weight: 600; }

.badge {
  display: inline-flex; align-items: center; gap: 6px; font-family: var(--ff-display);
  font-weight: 600; font-size: 0.72rem; letter-spacing: 0.06em; text-transform: uppercase;
  padding: 4px 11px; border-radius: var(--r-xs);
}
.badge-violet { background: var(--evolve-violet-100); color: var(--evolve-violet-700); }
.badge-cyan { background: #d9f3fb; color: #036c87; }
.badge-amber { background: #fdf0d4; color: #8a5e00; }
.badge-neutral { background: var(--ink-100); color: var(--ink-700); }
.badge-solid { background: var(--evolve-violet); color: #fff; }

.demo-row { display: flex; flex-wrap: wrap; gap: var(--s-4); align-items: center; }
.demo-pad { padding: var(--s-6); }
.demo-pad.dark { background: var(--space-800); background-image: var(--grad-hero); border-radius: var(--r-lg); }
.btn-on-dark.btn-primary { box-shadow: var(--shadow-violet); }
.btn-on-dark.btn-secondary { color: #fff; border-color: rgba(255,255,255,0.4); }
.btn-on-dark.btn-secondary:hover { border-color: var(--cyan-glow); color: var(--cyan-glow); background: transparent; }

/* radii / shadow demos */
.token-demo { display:flex; flex-direction:column; align-items:center; gap:10px; }
.token-demo .box { width: 100%; height: 78px; background: var(--bg-surface); border: 1px solid var(--border-1); }
.token-demo .lbl { font-family: var(--ff-mono); font-size: 12px; color: var(--fg-3); }
.token-demo .lbl b { color: var(--fg-1); }
.shadow-box { width:100%; height:78px; border-radius: var(--r-md); background: var(--white); }

/* Spacing scale */
.space-row { display:flex; align-items:center; gap: var(--s-4); padding: 7px 0; }
.space-row .bar { height: 16px; background: var(--evolve-violet); border-radius: 2px; }
.space-row .k { font-family: var(--ff-mono); font-size: 12px; color: var(--fg-1); width: 56px; }
.space-row .px { font-family: var(--ff-mono); font-size: 12px; color: var(--fg-3); }

/* overview hero */
.hero {
  position: relative; overflow: hidden; border-radius: var(--r-2xl);
  background: var(--space-800); background-image: var(--grad-hero);
  color: #fff; padding: var(--s-10) var(--s-8); margin-bottom: var(--s-8);
}
.hero .bgimg { position:absolute; inset:0; object-fit: cover; width:100%; height:100%; opacity:0.5; mix-blend-mode: screen; }
.hero .inner { position: relative; max-width: 60ch; }
.hero .eyebrow { color: var(--evolve-violet-400); }
.hero h1 { color:#fff; margin: var(--s-4) 0 var(--s-5); }
.hero p { color: rgba(255,255,255,0.82); font-size: 1.2rem; line-height: 1.55; }
.hero .wmlogo { width: 168px; margin-bottom: var(--s-6); display:block; }

/* index nav cards */
.navcard {
  display: flex; flex-direction: column; gap: var(--s-3);
  text-decoration: none; color: inherit; height: 100%;
  transition: box-shadow var(--dur-base) var(--ease-out), transform var(--dur-base) var(--ease-out), border-color var(--dur-base);
}
.navcard:hover { box-shadow: var(--shadow-3); transform: translateY(-3px); border-color: var(--evolve-violet-200); }
.navcard .ic { width: 44px; height: 44px; border-radius: var(--r-md); display:flex; align-items:center; justify-content:center; background: var(--evolve-violet-50); color: var(--evolve-violet); }
.navcard .ic svg { width: 22px; height: 22px; stroke-width: 1.7; }
.navcard h3 { margin: 0; }
.navcard p { margin: 0; color: var(--fg-2); font-size: 0.95rem; }
.navcard .go { margin-top: auto; padding-top: var(--s-3); font-family: var(--ff-display); font-weight:500; font-size: 0.82rem; letter-spacing:0.06em; text-transform:uppercase; color: var(--evolve-violet); display:flex; align-items:center; gap:6px; }

/* misc */
.hr { height:1px; background: var(--border-1); border:0; margin: var(--s-8) 0; }
.mini-label { font-family: var(--ff-display); font-weight:600; font-size:0.72rem; letter-spacing:0.1em; text-transform:uppercase; color: var(--fg-3); margin-bottom: var(--s-2); }
code.inline { font-family: var(--ff-mono); font-size: 0.85em; background: var(--ink-100); padding: 2px 6px; border-radius: var(--r-sm); color: var(--evolve-violet-700); }
.muted { color: var(--fg-3); }

/* ----------------------------------------------------------------
   Responsive: collapse sidebar
---------------------------------------------------------------- */
@media (max-width: 900px) {
  .app { grid-template-columns: 1fr; }
  .topbar {
    display: flex; align-items: center; justify-content: space-between;
    position: sticky; top: 0; z-index: 40;
    padding: 12px var(--s-5);
    background: #000; backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255,255,255,0.08);
  }
  .topbar .brand-mark { padding: 0; margin: 0; border: 0; }
  .topbar .brand-mark .wm { font-size: 1.1rem; }
  .topbar .menu-btn { background: transparent; border: 1px solid rgba(255,255,255,0.25); color:#fff; border-radius: var(--r-md); padding: 8px; display:flex; cursor:pointer; }
  .topbar .menu-btn svg { width: 22px; height: 22px; }
  .sidebar {
    position: fixed; top: 0; left: 0; z-index: 50;
    width: min(86vw, 320px); height: 100vh;
    transform: translateX(-103%); transition: transform var(--dur-slow) var(--ease-out);
  }
  .sidebar.open { transform: translateX(0); box-shadow: 0 0 60px rgba(0,0,0,0.5); }
  .scrim { position: fixed; inset:0; background: rgba(7,7,26,0.6); z-index: 45; opacity:0; pointer-events:none; transition: opacity var(--dur-base); }
  .scrim.show { opacity:1; pointer-events:auto; }
  .page { padding: var(--s-7) var(--s-5) var(--s-8); }
  .topbar .brand-mark { padding:0; }
  .topbar .brand-mark .wm-img { width: 128px; }
}

/* ----------------------------------------------------------------
   Dark-surface treatments
---------------------------------------------------------------- */
/* Symbol keeps its primary violet on deep space (no recolour) */
.sym-on-dark { }

/* Dark variants of components, shown beside the light ones */
.card.on-dark { background: var(--space-700); border-color: rgba(255,255,255,0.10); }
.card.on-dark .t-h4, .card.on-dark h3, .card.on-dark .num { color: #fff; }
.card.on-dark p, .card.on-dark li, .card.on-dark .t-body-sm { color: rgba(255,255,255,0.74); }
.card.on-dark.card-accent { border-top-color: var(--evolve-violet-400); }
.panel-dark { background: var(--space-800); background-image: var(--grad-hero); border-radius: var(--r-lg); padding: var(--s-6); }
.panel-dark .mini-label { color: rgba(255,255,255,0.5); }

.field-dark label { color: rgba(255,255,255,0.92); }
.field-dark input, .field-dark select { background: rgba(255,255,255,0.07); border-color: rgba(255,255,255,0.2); color:#fff; }
.field-dark input::placeholder { color: rgba(255,255,255,0.42); }
.field-dark input:focus, .field-dark select:focus { outline:none; border-color: var(--cyan-glow); box-shadow:0 0 0 3px rgba(91,211,240,0.20); }
.field-dark .help { color: rgba(255,255,255,0.52); }

.badge-on-dark.badge-violet { background: rgba(178,61,161,0.24); color: #f0cdea; }
.badge-on-dark.badge-cyan { background: rgba(0,176,218,0.18); color: var(--cyan-glow); }
.badge-on-dark.badge-amber { background: rgba(249,180,27,0.18); color: var(--amber); }
.badge-on-dark.badge-neutral { background: rgba(255,255,255,0.10); color: rgba(255,255,255,0.82); }
.badge-on-dark.badge-solid { background: var(--evolve-violet); color:#fff; }