/* kami.js — Brand Identity stylesheet */

:root {
  /* ink canvas (cool near-black) */
  --ink-900: #07090D;
  --ink-850: #0A0D12;
  --ink-800: #0E1218;
  --surface: #12161D;
  --surface-2: #171C24;
  --line: rgba(255, 255, 255, 0.08);
  --line-strong: rgba(255, 255, 255, 0.14);

  /* text */
  --text: #EAEDF2;
  --text-soft: #AEB6C2;
  --text-mute: #6B7686;
  --text-faint: #454E5C;

  /* accent — electric blue (primary) */
  --blue-400: #5B8DEF;
  --blue-500: #2F6BFF;
  --blue-600: #2665EC;
  --accent: var(--blue-500);
  --accent-ink: #0A1530;

  /* alt accents shown in color exploration */
  --violet: #8B5CF6;
  --mint: #3CD8B4;

  --maxw: 1200px;

  --font-sans: "IBM Plex Sans", system-ui, -apple-system, sans-serif;
  --font-mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;
}

/* light mode */
.light {
  --ink-900: #FAFBFC;
  --ink-850: #F4F6F8;
  --ink-800: #EEF1F4;
  --surface: #FFFFFF;
  --surface-2: #F6F8FA;
  --line: rgba(10, 20, 35, 0.10);
  --line-strong: rgba(10, 20, 35, 0.18);
  --text: #0C1219;
  --text-soft: #38424F;
  --text-mute: #6B7686;
  --text-faint: #A7B0BC;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  background: var(--ink-900);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  line-height: 1.5;
  transition: background .4s ease, color .4s ease;
}

::selection { background: var(--accent); color: #fff; }

/* ---------- layout ---------- */
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 40px; }

section { padding: 120px 0; border-top: 1px solid var(--line); }
section:first-of-type { border-top: none; }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--accent);
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 22px;
}
.eyebrow::before {
  content: "";
  width: 28px; height: 1px;
  background: var(--accent);
  opacity: .6;
}
.section-head { margin-bottom: 56px; max-width: 720px; }
.section-head h2 {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.08;
}
.section-head p {
  margin-top: 18px;
  color: var(--text-soft);
  font-size: 17px;
  max-width: 620px;
  text-wrap: pretty;
}

/* ---------- top nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--ink-900) 78%, transparent);
  backdrop-filter: blur(14px) saturate(140%);
  border-bottom: 1px solid var(--line);
}
.nav .wrap { display: flex; align-items: center; justify-content: space-between; height: 64px; padding-top:0; padding-bottom:0;}
.nav-logo { display: flex; align-items: center; gap: 10px; }
.nav-logo svg { width: 26px; height: 26px; }
.nav-logo .wm { font-weight: 600; font-size: 17px; letter-spacing: -0.01em; }
.nav-logo .wm .dot { color: var(--accent); }
.nav-links { display: flex; gap: 30px; align-items: center; }
.nav-links a {
  color: var(--text-mute); text-decoration: none; font-size: 13.5px;
  font-family: var(--font-mono); letter-spacing: .02em; transition: color .2s;
}
.nav-links a:hover { color: var(--text); }
.toggle {
  width: 34px; height: 34px; border-radius: 9px;
  border: 1px solid var(--line-strong);
  background: var(--surface);
  color: var(--text-soft);
  display: grid; place-items: center; cursor: pointer;
  transition: all .2s;
}
.toggle:hover { color: var(--text); border-color: var(--accent); }
.toggle svg { width: 16px; height: 16px; }

/* ---------- hero ---------- */
.hero { padding: 110px 0 130px; position: relative; overflow: hidden; }
.hero-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 56px 56px;
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, #000 0%, transparent 75%);
          mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, #000 0%, transparent 75%);
  opacity: .55;
}
.hero .wrap { position: relative; }
.hero-tag {
  font-family: var(--font-mono); font-size: 13px; color: var(--text-mute);
  letter-spacing: .04em; margin-bottom: 40px;
}
.hero-tag b { color: var(--accent); font-weight: 500; }
.hero-lockup { display: flex; align-items: center; gap: 38px; flex-wrap: wrap; }
.hero-lockup .mark { width: 132px; height: 132px; flex: none; }
.hero-word {
  font-size: clamp(56px, 11vw, 132px);
  font-weight: 600; letter-spacing: -0.045em; line-height: .9;
}
.hero-word .br { color: var(--text-faint); font-weight: 400; }
.hero-word .dot { color: var(--accent); }
.hero-sub {
  margin-top: 46px; font-size: 19px; color: var(--text-soft);
  max-width: 560px; text-wrap: pretty;
}
.hero-meta {
  margin-top: 40px; display: flex; gap: 36px; flex-wrap: wrap;
  font-family: var(--font-mono); font-size: 12.5px; color: var(--text-mute);
}
.hero-meta div span { color: var(--text-faint); display:block; margin-bottom:4px; letter-spacing:.12em; text-transform:uppercase; font-size:11px;}
.hero-meta div b { color: var(--text); font-weight: 500; }

/* ---------- logo system grid ---------- */
.logo-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px;
  background: var(--line); border: 1px solid var(--line); border-radius: 16px; overflow: hidden;
}
.logo-cell {
  background: var(--ink-850); padding: 44px 36px 28px; position: relative;
  display: flex; flex-direction: column; min-height: 280px;
}
.logo-cell.primary { background: color-mix(in srgb, var(--accent) 7%, var(--ink-850)); }
.logo-stage {
  flex: 1; display: grid; place-items: center; padding: 14px 0 30px;
}
.logo-stage svg { width: 92px; height: 92px; }
.logo-foot { border-top: 1px solid var(--line); padding-top: 18px; }
.logo-foot .n { font-family: var(--font-mono); font-size: 11px; color: var(--text-faint); letter-spacing:.1em; }
.logo-foot h4 { font-size: 16px; font-weight: 600; margin-top: 6px; letter-spacing:-.01em; }
.logo-foot p { font-size: 13px; color: var(--text-mute); margin-top: 4px; }
.dl { display: flex; gap: 8px; margin-top: 16px; }
.dl button {
  font-family: var(--font-mono); font-size: 11px; letter-spacing: .08em;
  color: var(--text-soft); background: var(--surface);
  border: 1px solid var(--line-strong); border-radius: 7px;
  padding: 6px 12px; cursor: pointer; transition: all .18s; min-width: 48px;
}
.dl button:hover { color: #fff; background: var(--accent); border-color: var(--accent); }
.dl-note {
  margin-top: 22px; font-family: var(--font-mono); font-size: 12px;
  color: var(--text-mute); line-height: 1.6; max-width: 720px;
}
.dl-note b { color: var(--text-soft); font-weight: 500; }
.kit-btn {
  margin-top: 26px; display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-mono); font-size: 14px; font-weight: 500; letter-spacing: .01em;
  color: #fff; background: var(--accent); border: none; border-radius: 10px;
  padding: 13px 22px; cursor: pointer; transition: all .18s;
  box-shadow: 0 10px 26px -10px color-mix(in srgb, var(--accent) 75%, transparent);
}
.kit-btn:hover { transform: translateY(-1px); filter: brightness(1.08); }
.kit-btn:active { transform: translateY(0); }
.kit-btn:disabled { opacity: .7; cursor: progress; transform: none; }
.kit-btn .ar { font-size: 16px; }
.kit-btn .z { opacity: .7; }
.pill {
  position: absolute; top: 18px; right: 18px;
  font-family: var(--font-mono); font-size: 10px; letter-spacing: .14em; text-transform: uppercase;
  color: var(--accent); border: 1px solid color-mix(in srgb, var(--accent) 40%, transparent);
  padding: 4px 9px; border-radius: 100px;
}

/* ---------- construction ---------- */
.split { display: grid; grid-template-columns: 1.1fr .9fr; gap: 56px; align-items: center; }
.construct-stage {
  aspect-ratio: 1; background: var(--ink-850); border: 1px solid var(--line);
  border-radius: 16px; display: grid; place-items: center; padding: 8%;
}
.construct-stage svg { width: 100%; height: 100%; }
.spec-list { display: flex; flex-direction: column; gap: 0; }
.spec-list .row { display: flex; gap: 18px; padding: 18px 0; border-top: 1px solid var(--line); }
.spec-list .row:first-child { border-top: none; }
.spec-list .row .k { font-family: var(--font-mono); font-size: 12px; color: var(--text-mute); width: 130px; flex:none; letter-spacing:.04em; padding-top:2px;}
.spec-list .row .v { color: var(--text-soft); font-size: 15px; }
.spec-list .row .v b { color: var(--text); font-weight: 600; }

/* ---------- color ---------- */
.swatches { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.sw {
  border-radius: 14px; border: 1px solid var(--line); overflow: hidden; background: var(--surface);
}
.sw .chip { height: 130px; }
.sw .meta { padding: 14px 16px; }
.sw .meta .name { font-size: 13.5px; font-weight: 600; }
.sw .meta .hex { font-family: var(--font-mono); font-size: 12px; color: var(--text-mute); margin-top: 3px; }

.accents { display: grid; grid-template-columns: repeat(3,1fr); gap: 18px; margin-top: 28px; }
.accent-card {
  border: 1px solid var(--line); border-radius: 14px; padding: 22px; background: var(--surface);
  display: flex; gap: 16px; align-items: center;
}
.accent-card .dot3 { width: 46px; height: 46px; border-radius: 12px; flex:none; }
.accent-card.rec { border-color: color-mix(in srgb, var(--accent) 45%, transparent); }
.accent-card .lab { font-size: 14px; font-weight:600; }
.accent-card .lab span { display:block; font-family: var(--font-mono); font-size: 11.5px; color: var(--text-mute); font-weight:400; margin-top:3px;}
.accent-card .tag { margin-left:auto; font-family:var(--font-mono); font-size:10px; letter-spacing:.12em; text-transform:uppercase; color: var(--accent);}

/* ---------- typography ---------- */
.type-row { display: grid; grid-template-columns: 150px 1fr; gap: 32px; padding: 30px 0; border-top: 1px solid var(--line); align-items: baseline; }
.type-row:first-of-type { border-top: none; }
.type-row .lab { font-family: var(--font-mono); font-size: 12px; color: var(--text-mute); letter-spacing:.04em; }
.type-row .lab span { display:block; color: var(--text-faint); margin-top:4px; }
.spec { letter-spacing: -0.02em; }
.s-display { font-size: 64px; font-weight: 600; }
.s-h { font-size: 34px; font-weight: 600; }
.s-body { font-size: 19px; font-weight: 400; color: var(--text-soft); letter-spacing: 0; line-height:1.55; }
.s-mono { font-family: var(--font-mono); font-size: 17px; color: var(--text-soft); letter-spacing:0; }
.s-mono .dot { color: var(--accent); }
.glyphs { font-family: var(--font-mono); font-size: 22px; color: var(--text-soft); letter-spacing:.04em; line-height:1.9; }

/* ---------- usage ---------- */
.use-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.use-card {
  border: 1px solid var(--line); border-radius: 16px; background: var(--ink-850);
  padding: 26px; display: flex; flex-direction: column; gap: 22px; min-height: 240px;
}
.use-card .cap { font-family: var(--font-mono); font-size: 11px; color: var(--text-mute); letter-spacing:.1em; text-transform:uppercase; }
.use-stage { flex:1; display: grid; place-items: center; }

/* favicon row */
.fav-row { display: flex; align-items: flex-end; gap: 26px; }
.fav { background: var(--ink-900); border: 1px solid var(--line); border-radius: 7px; display: grid; place-items: center; }
.fav.s16 { width: 16px; height: 16px; border-radius:3px;}
.fav.s32 { width: 32px; height: 32px; border-radius:5px;}
.fav.s48 { width: 48px; height: 48px; }
.fav.s64 { width: 64px; height: 64px; }
.fav.fill { background: var(--accent); border-color: transparent; }
.fav.fill svg { width: 74%; height: 74%; }
.fav svg { width: 70%; height: 70%; }
.fav-row .lbl { font-family:var(--font-mono); font-size:10px; color: var(--text-faint); }

/* github avatar */
.gh { display: flex; align-items: center; gap: 18px; }
.gh .ava { width: 96px; height: 96px; border-radius: 50%; background: var(--ink-900); border: 1px solid var(--line-strong); display: grid; place-items: center; }
.gh .ava svg { width: 56%; height: 56%; }
.gh .ava.fill { background: var(--accent); border-color: transparent; }
.gh .info .u { font-weight: 600; font-size: 15px; }
.gh .info .h { color: var(--text-mute); font-size: 13px; font-family: var(--font-mono); }

/* browser header */
.browser { width: 100%; border: 1px solid var(--line-strong); border-radius: 12px; overflow: hidden; background: var(--ink-900); }
.browser .bar { height: 38px; background: var(--surface-2); border-bottom: 1px solid var(--line); display: flex; align-items: center; gap: 7px; padding: 0 14px; }
.browser .bar i { width: 10px; height: 10px; border-radius: 50%; background: var(--text-faint); display:block; }
.browser .head { display: flex; align-items: center; justify-content: space-between; padding: 18px 22px; }
.browser .head .l { display: flex; align-items: center; gap: 10px; }
.browser .head .l svg { width: 24px; height: 24px; }
.browser .head .l .wm { font-weight: 600; font-size: 16px; }
.browser .head .l .wm .dot { color: var(--accent); }
.browser .head nav { display: flex; gap: 20px; font-size: 13px; color: var(--text-mute); font-family:var(--font-mono); }
.browser .head .cta { font-size: 12.5px; background: var(--accent); color: #fff; padding: 7px 14px; border-radius: 7px; font-weight:500;}

/* app squircle */
.squircle { width: 104px; height: 104px; border-radius: 24px; display: grid; place-items: center;
  background: radial-gradient(120% 120% at 30% 20%, color-mix(in srgb, var(--accent) 100%, #fff 10%), var(--blue-600) 60%, #1746C9 100%);
  box-shadow: 0 18px 40px -12px color-mix(in srgb, var(--accent) 60%, transparent), inset 0 1px 0 rgba(255,255,255,.25); }
.squircle svg { width: 56%; height: 56%; }

/* social / OG card */
.og {
  grid-column: span 2; aspect-ratio: 1200 / 630; border-radius: 16px; overflow:hidden;
  border: 1px solid var(--line-strong); position: relative;
  background: var(--ink-850);
  display: flex; flex-direction: column; justify-content: space-between; padding: 56px;
}
.og .og-grid { position:absolute; inset:0; background-image: linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px); background-size:48px 48px; opacity:.5;
  -webkit-mask-image: radial-gradient(ellipse 80% 90% at 80% 10%, #000, transparent 70%); mask-image: radial-gradient(ellipse 80% 90% at 80% 10%, #000, transparent 70%);}
.og .og-top { position:relative; display:flex; align-items:center; gap:14px;}
.og .og-top svg { width: 40px; height:40px;}
.og .og-top .wm { font-weight:600; font-size: 22px; letter-spacing:-.01em;}
.og .og-top .wm .dot{ color: var(--accent);}
.og .og-body { position: relative; }
.og .og-body h3 { font-size: clamp(28px, 4.4vw, 52px); font-weight: 600; letter-spacing: -0.03em; line-height:1.05; max-width: 80%; }
.og .og-body p { font-family: var(--font-mono); color: var(--text-mute); font-size: 15px; margin-top: 18px; letter-spacing:.02em;}

/* conference slide */
.slide {
  grid-column: span 2; aspect-ratio: 16/9; border-radius: 16px; overflow: hidden;
  border: 1px solid var(--line-strong); background: var(--ink-900);
  position: relative; display: flex; flex-direction: column; justify-content: center; padding: 0 84px;
}
.slide .s-grid { position:absolute; inset:0; background-image: radial-gradient(circle at 1px 1px, var(--line-strong) 1px, transparent 0); background-size: 38px 38px; opacity:.5;
 -webkit-mask-image: linear-gradient(75deg, transparent 40%, #000); mask-image: linear-gradient(75deg, transparent 40%, #000);}
.slide .badge { position:relative; display:flex; align-items:center; gap:10px; font-family:var(--font-mono); font-size:13px; color:var(--text-mute); margin-bottom:26px;}
.slide .badge svg{ width:22px;height:22px;}
.slide h3 { position: relative; font-size: clamp(30px, 5vw, 58px); font-weight: 600; letter-spacing:-.03em; line-height:1.02; max-width: 760px;}
.slide h3 em { font-style: normal; color: var(--accent); }
.slide .by { position:relative; margin-top: 30px; font-family: var(--font-mono); font-size: 14px; color: var(--text-soft);}
.slide .by .dot{ color: var(--accent);}

/* ---------- do / don't ---------- */
.dd { display:grid; grid-template-columns: repeat(2,1fr); gap: 24px; }
.dd-card { border:1px solid var(--line); border-radius:14px; overflow:hidden; }
.dd-card .stage { height: 150px; display:grid; place-items:center; background: var(--ink-850); border-bottom:1px solid var(--line);}
.dd-card .stage svg { width: 64px; height:64px;}
.dd-card .lab { padding: 14px 18px; display:flex; align-items:center; gap:10px; font-size:13.5px; color: var(--text-soft);}
.dd-card .lab .ic { width:18px; height:18px; border-radius:50%; display:grid; place-items:center; flex:none; font-size:12px; font-weight:700;}
.dd-card .lab .ic.y { background: color-mix(in srgb, var(--mint) 22%, transparent); color: var(--mint);}
.dd-card .lab .ic.n { background: rgba(255,90,90,.16); color:#FF6B6B;}

/* ---------- footer ---------- */
.foot { padding: 70px 0 90px; border-top: 1px solid var(--line); }
.foot .wrap { display:flex; justify-content: space-between; align-items: center; flex-wrap:wrap; gap:24px;}
.foot .l { display:flex; align-items:center; gap:12px;}
.foot .l svg{ width:24px; height:24px;}
.foot .l .wm{ font-weight:600;} .foot .l .wm .dot{ color:var(--accent);}
.foot .c { font-family:var(--font-mono); font-size:12px; color: var(--text-faint);}

@media (max-width: 880px) {
  .wrap { padding: 0 22px; }
  section { padding: 80px 0; }
  .logo-grid { grid-template-columns: repeat(2, 1fr); }
  .split { grid-template-columns: 1fr; gap: 32px; }
  .use-grid { grid-template-columns: 1fr; }
  .og, .slide { grid-column: span 1; }
  .swatches { grid-template-columns: repeat(2,1fr); }
  .accents { grid-template-columns: 1fr; }
  .type-row { grid-template-columns: 1fr; gap: 12px; }
  .nav-links { display:none; }
  .dd { grid-template-columns: 1fr; }
}