/* ============================================================
   mantichor.com — design system
   Committed dark palette. Code-flavored brand. OKLCH tokens.
   ============================================================ */

/* ---- Tokens ---------------------------------------------- */
:root {
  /* surfaces — warm dark olive, tinted toward brand hue */
  --bg:        oklch(0.255 0.012 130);
  --bg-raised: oklch(0.300 0.012 130);
  --bg-sunken: oklch(0.215 0.012 130);
  --line:      oklch(0.360 0.011 130);
  --line-soft: oklch(0.320 0.010 130);

  /* text */
  --text:       oklch(0.825 0.006 140);
  --text-dim:   oklch(0.620 0.006 150);
  --text-faint: oklch(0.500 0.006 150);

  /* brand */
  --gold:        oklch(0.840 0.120 82);
  --gold-bright: oklch(0.880 0.130 84);
  --gold-tint:   oklch(0.840 0.120 82 / 0.12);
  --blue:        oklch(0.720 0.120 250);
  --blue-bright: oklch(0.700 0.150 245);
  --blue-tint:   oklch(0.720 0.120 250 / 0.12);

  /* type */
  --font-body:    "Hanken Grotesk", system-ui, sans-serif;
  --font-display: "Space Grotesk", system-ui, sans-serif;
  --font-mono:    "JetBrains Mono", ui-monospace, monospace;
  --font-mark:    "Comfortaa", system-ui, sans-serif;

  /* fluid scale (~1.28 ratio) */
  --step--1: clamp(0.80rem, 0.77rem + 0.15vw, 0.875rem);
  --step-0:  clamp(1.00rem, 0.96rem + 0.20vw, 1.0625rem);
  --step-1:  clamp(1.28rem, 1.18rem + 0.50vw, 1.50rem);
  --step-2:  clamp(1.64rem, 1.45rem + 0.95vw, 2.10rem);
  --step-3:  clamp(2.10rem, 1.75rem + 1.75vw, 3.05rem);
  --step-4:  clamp(2.70rem, 2.05rem + 3.25vw, 4.50rem);
  --step-5:  clamp(3.40rem, 2.30rem + 5.50vw, 6.50rem);

  /* space */
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2.5rem;
  --space-5: 4rem;
  --space-6: 6.5rem;

  --maxw: 72rem;
  --radius: 14px;
  --ease: cubic-bezier(0.16, 1, 0.3, 1); /* ease-out-expo-ish */
}

/* ---- Reset / base ---------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; overflow-x: clip; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: var(--step-0);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: clip;
}

img { max-width: 100%; display: block; height: auto; }

a { color: var(--blue); text-decoration: none; transition: color 0.2s var(--ease); }
a:hover { color: var(--blue-bright); }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: oklch(0.93 0.01 120);
  text-wrap: balance;
}

::selection { background: var(--gold); color: oklch(0.22 0.01 130); }

:focus-visible { outline: 2px solid var(--gold); outline-offset: 3px; border-radius: 2px; }

/* ---- Layout helpers -------------------------------------- */
.wrap { width: min(100% - 2.5rem, var(--maxw)); margin-inline: auto; }
.section { padding-block: clamp(3.5rem, 8vw, 7rem); }
.eyebrow {
  font-family: var(--font-mono);
  font-size: var(--step--1);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gold);
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
}
.eyebrow::before { content: "//"; color: var(--blue); opacity: 0.8; }

.lead { font-size: var(--step-1); color: var(--text); max-width: 60ch; }
.muted { color: var(--text-dim); }
.measure { max-width: 68ch; }

/* ---- Header / nav ---------------------------------------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: oklch(0.255 0.012 130 / 0.72);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease);
}
.site-header[data-scrolled="true"] { border-bottom-color: var(--line-soft); }
.nav { display: flex; align-items: center; justify-content: space-between; gap: var(--space-3); padding-block: 1.1rem; }

/* {m} logo built from text for crispness + control */
.logo { display: inline-flex; align-items: baseline; gap: 0.05em; font-family: var(--font-mark); font-weight: 600; font-size: 1.5rem; line-height: 1; letter-spacing: -0.01em; }
.logo:hover { color: inherit; }
.logo .brace { font-family: var(--font-mono); color: var(--blue); font-weight: 400; transition: transform 0.4s var(--ease), color 0.3s var(--ease); display: inline-block; }
.logo .brace--l { transform-origin: right; }
.logo .brace--r { transform-origin: left; }
.logo .mark { color: var(--gold); padding-inline: 0.12em; }
.logo:hover .brace--l { transform: translateX(-3px); color: var(--gold); }
.logo:hover .brace--r { transform: translateX(3px); color: var(--gold); }

.nav-links { display: flex; align-items: center; gap: clamp(1rem, 3vw, 2.25rem); list-style: none; }
.nav-links a {
  font-family: var(--font-mono);
  font-size: var(--step--1);
  letter-spacing: 0.04em;
  color: var(--text-dim);
  position: relative;
  padding-block: 0.25rem;
}
.nav-links a:hover { color: var(--text); }
.nav-links a[aria-current="page"] { color: var(--gold); }
.nav-links a::after {
  content: ""; position: absolute; left: 0; bottom: -2px; height: 1px; width: 0;
  background: var(--gold); transition: width 0.3s var(--ease);
}
.nav-links a:hover::after, .nav-links a[aria-current="page"]::after { width: 100%; }
.nav-cta { color: var(--gold) !important; }

/* ---- Buttons --------------------------------------------- */
.btn {
  display: inline-flex; align-items: center; gap: 0.55em;
  font-family: var(--font-mono); font-size: var(--step--1); letter-spacing: 0.03em;
  padding: 0.85em 1.35em; border-radius: 10px; cursor: pointer;
  transition: transform 0.25s var(--ease), background 0.25s var(--ease), border-color 0.25s var(--ease), color 0.25s var(--ease);
  border: 1px solid transparent; white-space: nowrap;
}
.btn .arr { transition: transform 0.3s var(--ease); }
.btn:hover .arr { transform: translateX(4px); }
.btn-primary { background: var(--gold); color: oklch(0.24 0.012 90); font-weight: 500; }
.btn-primary:hover { background: var(--gold-bright); color: oklch(0.24 0.012 90); transform: translateY(-2px); }
.btn-secondary { border-color: var(--line); color: var(--text); }
.btn-secondary:hover { border-color: var(--gold); color: var(--gold); transform: translateY(-2px); }

/* ---- Hero (home) ----------------------------------------- */
.hero { position: relative; min-height: clamp(36rem, 92vh, 52rem); display: grid; align-items: center; overflow: hidden; }
.hero-canvas { position: absolute; inset: 0; width: 100%; height: 100%; z-index: 0; }
.hero::after { /* vignette to seat content */
  content: ""; position: absolute; inset: 0; z-index: 1; pointer-events: none;
  background: radial-gradient(120% 90% at 50% 42%, transparent 38%, var(--bg) 86%);
}
.hero-inner { position: relative; z-index: 2; text-align: center; padding-block: var(--space-5); }
.hero-braces { display: flex; align-items: center; justify-content: center; gap: clamp(0.25rem, 2vw, 2rem); max-width: 100%; }
.hero-brace { font-family: var(--font-mono); font-weight: 300; color: var(--blue); font-size: clamp(2.4rem, 11vw, 11rem); line-height: 0.8; opacity: 0.55; }
.hero-wordmark { font-family: var(--font-mark); font-weight: 600; color: var(--gold); font-size: clamp(1.9rem, 9.2vw, 7.5rem); line-height: 1; letter-spacing: -0.02em; }
.hero-tagline { margin-top: var(--space-3); font-size: var(--step-2); font-family: var(--font-display); font-weight: 500; color: oklch(0.92 0.01 120); letter-spacing: -0.02em; }
.hero-sub { margin: var(--space-2) auto 0; max-width: 46ch; color: var(--text-dim); font-size: var(--step-1); }
.hero-actions { margin-top: var(--space-4); display: flex; gap: var(--space-2); justify-content: center; flex-wrap: wrap; }
.hero-scroll { position: absolute; bottom: 1.6rem; left: 50%; transform: translateX(-50%); z-index: 2; font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--text-faint); }
.hero-scroll span { display: block; width: 1px; height: 2rem; margin: 0.6rem auto 0; background: linear-gradient(var(--text-faint), transparent); }

/* ---- Section heading block ------------------------------- */
.shead { display: grid; gap: var(--space-2); margin-bottom: var(--space-4); }
.shead h2 { font-size: var(--step-3); }

/* ---- Capabilities list (home) — editorial, not cards ----- */
.caps { border-top: 1px solid var(--line-soft); }
.cap {
  display: grid; grid-template-columns: 4rem 1fr; gap: var(--space-2) var(--space-3);
  padding-block: var(--space-3); border-bottom: 1px solid var(--line-soft);
  align-items: baseline;
}
.cap__no { font-family: var(--font-mono); color: var(--blue); font-size: var(--step--1); }
.cap__body { display: grid; gap: 0.4rem; }
.cap h3 { font-size: var(--step-1); color: var(--gold); }
.cap p { color: var(--text-dim); max-width: 62ch; }
@media (min-width: 720px) {
  .cap { grid-template-columns: 4rem 18rem 1fr; }
  .cap__body { grid-column: 2 / 4; grid-template-columns: subgrid; }
  .cap h3 { grid-column: 1; }
  .cap p { grid-column: 2; }
}

/* ---- Project teasers (home) ------------------------------ */
.teasers { display: grid; gap: var(--space-2); }
.teaser {
  display: flex; flex-wrap: wrap; align-items: baseline; gap: 0.5rem 1rem;
  padding: var(--space-3) 0; border-bottom: 1px solid var(--line-soft);
  transition: padding-left 0.35s var(--ease);
}
.teaser:hover { padding-left: 0.75rem; }
.teaser__name { font-family: var(--font-display); font-size: var(--step-2); font-weight: 600; color: oklch(0.92 0.01 120); letter-spacing: -0.02em; }
.teaser:hover .teaser__name { color: var(--gold); }
.teaser__tag { font-family: var(--font-mono); font-size: var(--step--1); color: var(--text-faint); }
.teaser__desc { flex-basis: 100%; color: var(--text-dim); max-width: 64ch; }
.teaser__arr { margin-left: auto; color: var(--blue); transition: transform 0.3s var(--ease); }
.teaser:hover .teaser__arr { transform: translateX(5px); }

/* ---- CTA band -------------------------------------------- */
.band {
  background:
    radial-gradient(80% 120% at 15% 0%, var(--gold-tint), transparent 60%),
    radial-gradient(80% 120% at 100% 100%, var(--blue-tint), transparent 55%),
    var(--bg-raised);
  border: 1px solid var(--line-soft); border-radius: var(--radius);
  padding: clamp(2.5rem, 6vw, 4.5rem); text-align: center;
}
.band h2 { font-size: var(--step-3); margin-bottom: var(--space-2); }
.band p { color: var(--text-dim); max-width: 52ch; margin: 0 auto var(--space-3); }
.band .hero-actions { margin-top: var(--space-3); }

/* ---- About ----------------------------------------------- */
.about-hero { padding-top: clamp(3rem, 7vw, 5rem); }
.about-hero h1 { font-size: var(--step-4); margin-block: var(--space-2) var(--space-3); }
.about-grid { display: grid; gap: var(--space-5); }
@media (min-width: 900px) { .about-grid { grid-template-columns: 1fr 20rem; align-items: start; gap: var(--space-5); } }
@media (min-width: 900px) { .about-grid--wide { grid-template-columns: 1fr 24rem; } }
.prose > * + * { margin-top: var(--space-3); }
.prose h2 { font-size: var(--step-2); margin-top: var(--space-4); color: var(--gold); }
.prose p { max-width: 68ch; color: var(--text); }
.prose strong { color: oklch(0.9 0.01 120); font-weight: 600; }

.sidecard { position: sticky; top: 6rem; display: grid; gap: var(--space-3); background: var(--bg-raised); border: 1px solid var(--line-soft); border-radius: var(--radius); padding: var(--space-3);}
.sidecard h3 { font-family: var(--font-mono); font-size: var(--step--1); letter-spacing: 0.1em; text-transform: uppercase; color: var(--text-faint); font-weight: 500; }
.factlist { list-style: none; display: grid; gap: 0.85rem; }
.factlist li { display: grid; gap: 0.1rem; }
.factlist .k { font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--blue); }
.factlist .v { color: var(--text); }

.quote { border: none; padding: 0; }
.quote p { font-family: var(--font-display); font-size: var(--step-1); line-height: 1.4; color: oklch(0.9 0.01 120); letter-spacing: -0.01em; }
.quote p::before { content: "\201C"; color: var(--gold); }
.quote p::after { content: "\201D"; color: var(--gold); }
.quote cite { display: block; margin-top: 0.6rem; font-style: normal; font-family: var(--font-mono); font-size: var(--step--1); color: var(--text-faint); }

/* timeline */
.timeline { list-style: none; display: grid; gap: 0; margin-top: var(--space-2); }
.tl { display: grid; grid-template-columns: 1fr; gap: 0.3rem; padding: var(--space-3) 0; border-top: 1px solid var(--line-soft); }
@media (min-width: 680px) { .tl { grid-template-columns: 11rem 1fr; gap: var(--space-3); } }
.tl__when { font-family: var(--font-mono); font-size: var(--step--1); color: var(--blue); }
.tl__role { color: var(--text); }
.tl__role b { color: var(--gold); font-weight: 600; }
.tl__role .co { color: oklch(0.9 0.01 120); font-weight: 600; }

/* ---- Portfolio ------------------------------------------- */
.portfolio { display: grid; gap: clamp(3rem, 7vw, 5.5rem); }
.project { display: grid; gap: var(--space-3); align-items: center; }
@media (min-width: 860px) {
  .project { grid-template-columns: 1fr 1fr; gap: var(--space-5); }
  .project:nth-child(even) .project__visual { order: 2; }
}
.project__visual {
  position: relative; aspect-ratio: 16 / 10; border-radius: var(--radius); overflow: hidden;
  border: 1px solid var(--line-soft); background: var(--bg-sunken);
  display: grid; place-items: center;
}
.project__body { display: grid; gap: var(--space-2); align-content: center; }
.project__name { font-size: var(--step-3); }
.project__meta { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.tag { font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.04em; color: var(--text-dim); border: 1px solid var(--line); border-radius: 999px; padding: 0.25em 0.8em; }
.tag--live { color: var(--gold); border-color: var(--gold); }
.tag--soon { color: var(--blue); border-color: oklch(0.72 0.12 250 / 0.5); }
.project__body p { color: var(--text-dim); }
.project__link { margin-top: 0.4rem; font-family: var(--font-mono); font-size: var(--step--1); display: inline-flex; align-items: center; gap: 0.5em; }
.project__link .arr { transition: transform 0.3s var(--ease); }
.project__link:hover .arr { transform: translateX(4px); }

/* project artwork — generative brand-tinted glyphs (no external imagery needed) */
.art { position: absolute; inset: 0; display: grid; place-items: center; }
.art__glyph { font-family: var(--font-display); font-weight: 700; font-size: clamp(3rem, 12vw, 6rem); color: var(--gold); letter-spacing: -0.04em; opacity: 0.95; z-index: 1; }
.art__mono { font-family: var(--font-mono); color: var(--gold); }
.art__grid { position: absolute; inset: 0; opacity: 0.5;
  background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 28px 28px; mask-image: radial-gradient(70% 70% at 50% 50%, #000, transparent); }
.art--blue .art__glyph { color: var(--blue); }
.art--blue { background: radial-gradient(90% 90% at 30% 20%, var(--blue-tint), transparent 70%), var(--bg-sunken); }
.art--gold { background: radial-gradient(90% 90% at 70% 20%, var(--gold-tint), transparent 70%), var(--bg-sunken); }

/* real project imagery — letterboxed over the grid texture, shape-tracing shadow */
.project__img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: contain; z-index: 1; }
.project__img--icon { padding: clamp(2.5rem, 17%, 5rem); filter: drop-shadow(0 14px 26px oklch(0.14 0.01 130 / 0.5)); }
.project__img--card { padding: clamp(0.9rem, 5%, 1.75rem); filter: drop-shadow(0 16px 30px oklch(0.14 0.01 130 / 0.55)); }
.project__img--shot { padding: clamp(2rem, 13%, 3.5rem); filter: drop-shadow(0 16px 30px oklch(0.14 0.01 130 / 0.55)); }
.project__img--logo { padding: clamp(1.75rem, 10%, 3rem); filter: drop-shadow(0 16px 30px oklch(0.14 0.01 130 / 0.5)); }

/* ---- Footer ---------------------------------------------- */
.site-footer { border-top: 1px solid var(--line-soft); margin-top: var(--space-5); padding-block: var(--space-5) var(--space-4); }
.footer-grid { display: grid; gap: var(--space-4); }
@media (min-width: 760px) { .footer-grid { grid-template-columns: 1.5fr 1fr 1fr; } }
.footer-brand .logo { font-size: 1.7rem; }
.footer-brand p { margin-top: var(--space-2); color: var(--text-dim); max-width: 34ch; }
.footer-col h4 { font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.12em; text-transform: uppercase; color: var(--text-faint); font-weight: 500; margin-bottom: var(--space-2); }
.footer-col ul { list-style: none; display: grid; gap: 0.6rem; }
.footer-col a { color: var(--text-dim); font-size: var(--step--1); }
.footer-col a:hover { color: var(--gold); }
.footer-bottom { margin-top: var(--space-4); padding-top: var(--space-3); border-top: 1px solid var(--line-soft); display: flex; flex-wrap: wrap; gap: var(--space-2); justify-content: space-between; align-items: center; }
.footer-bottom p { font-family: var(--font-mono); font-size: 0.72rem; color: var(--text-faint); letter-spacing: 0.04em; }
.social { display: flex; gap: var(--space-2); }
.social a { display: inline-grid; place-items: center; width: 2.4rem; height: 2.4rem; border: 1px solid var(--line); border-radius: 9px; color: var(--text-dim); transition: all 0.25s var(--ease); }
.social a:hover { color: var(--gold); border-color: var(--gold); transform: translateY(-2px); }
.social svg { width: 1.1rem; height: 1.1rem; fill: currentColor; }

/* ---- Reveal on scroll ------------------------------------ */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.7s var(--ease), transform 0.7s var(--ease); }
.reveal.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .reveal { opacity: 1; transform: none; } }

/* small screens — keep the nav on one tidy row */
@media (max-width: 540px) {
  .nav { gap: var(--space-2); }
  .nav-links { gap: 0.8rem; }
  .nav-links a { font-size: 0.72rem; letter-spacing: 0.01em; }
  .logo { font-size: 1.3rem; }
  .hero-actions .btn, .about-hero .btn { flex: 1 1 auto; justify-content: center; }
}
@media (max-width: 360px) {
  .nav-links { gap: 0.6rem; }
}

/* skip link */
.skip { position: absolute; left: -999px; top: 0; background: var(--gold); color: #222; padding: 0.6em 1em; border-radius: 0 0 8px 0; z-index: 100; font-family: var(--font-mono); font-size: var(--step--1); }
.skip:focus { left: 0; color: #222; }