/* Nesai Studio — styles
   Palette: ink, paper, river (Labs), mango (Ventures), lotus (Botanicals & Goods), leaf, lilac */

/* Self-hosted variable fonts (SIL Open Font License) */
@font-face {
  font-family: "Bricolage Grotesque";
  src: url(/assets/fonts/bricolage-grotesque.woff2) format("woff2");
  font-weight: 200 800; font-style: normal; font-display: swap;
}
@font-face {
  font-family: "Figtree";
  src: url(/assets/fonts/figtree.woff2) format("woff2");
  font-weight: 300 900; font-style: normal; font-display: swap;
}
@font-face {
  font-family: "Kantumruy Pro";
  src: url(/assets/fonts/kantumruy-pro-khmer.woff2) format("woff2");
  font-weight: 100 700; font-style: normal; font-display: swap;
  unicode-range: U+1780-17FF, U+19E0-19FF, U+200C-200D, U+25CC;
}

:root {
  --ink: #211C44;
  --ink-soft: #4A4566;
  --paper: #FDFCFA;
  --river: #4F5BFF;
  --mango: #FFB21A;
  --lotus: #FF5F86;
  --leaf: #13A06F;
  --lilac: #EEEBFF;
  --white: #FFFFFF;

  --display: "Bricolage Grotesque", "Figtree", system-ui, sans-serif;
  --body: "Figtree", system-ui, -apple-system, "Segoe UI", sans-serif;
  --khmer: "Kantumruy Pro", "Khmer OS", sans-serif;

  --wrap: 1200px;
  --gutter: clamp(20px, 5vw, 48px);
  --section: clamp(56px, 7vw, 96px);
  --radius-lg: 24px;
  --radius-sm: 999px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 400 1rem/1.6 var(--body);
  -webkit-font-smoothing: antialiased;
}
img, svg { display: block; max-width: 100%; }
h1, h2, h3, p, dl, dd, ol { margin: 0; }
a { color: inherit; }
[lang="km"] { font-family: var(--khmer); }

.wrap { width: min(100% - 2 * var(--gutter), var(--wrap)); margin-inline: auto; }

h1, h2, h3 { font-family: var(--display); font-weight: 700; letter-spacing: -0.02em; }
h1 { font-size: clamp(2.375rem, 5vw, 4rem); line-height: 1; font-variation-settings: "opsz" 96; }
h2 { font-size: clamp(1.75rem, 3.2vw, 2.625rem); line-height: 1.08; font-variation-settings: "opsz" 72; }
h3 { font-size: clamp(1.1875rem, 1.6vw, 1.375rem); line-height: 1.2; letter-spacing: -0.01em; }

.skip {
  position: absolute; left: 16px; top: -60px; z-index: 100;
  background: var(--ink); color: var(--white); padding: 10px 16px; border-radius: 8px;
}
.skip:focus { top: 16px; }

:focus-visible { outline: 3px solid var(--river); outline-offset: 3px; border-radius: 6px; }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  min-height: 46px; padding: 0 24px;
  font: 600 1rem/1 var(--body);
  text-decoration: none;
  color: var(--white); background: var(--ink);
  border: 2px solid var(--ink); border-radius: var(--radius-sm);
  transition: transform .15s ease, background-color .15s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }
.btn-ghost { background: transparent; color: var(--ink); }
.btn-ghost:hover { background: var(--white); }
.btn-small { min-height: 38px; padding: 0 18px; font-size: .9375rem; }
.btn-light { background: var(--mango); color: var(--ink); border-color: var(--mango); }
.btn-big { min-height: 56px; padding: 0 30px; font-size: clamp(1.0625rem, 1.8vw, 1.25rem); }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--paper) 88%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; }
.brand-mark { width: 51px; height: 34px; }
.brand-word { font: 800 1.625rem/1 var(--display); letter-spacing: -0.03em; }
.brand-sub { font-weight: 400; margin-left: 4px; color: var(--ink-soft); }

.site-nav { display: flex; align-items: center; gap: 28px; }
.site-nav a:not(.btn) { text-decoration: none; font-weight: 500; font-size: .9375rem; }
.site-nav a:not(.btn):hover { text-decoration: underline; text-underline-offset: 6px; text-decoration-thickness: 2px; }
.nav-toggle {
  display: none; font: 600 1rem var(--body); color: var(--ink);
  background: none; border: 2px solid var(--ink); border-radius: var(--radius-sm);
  padding: 8px 18px; cursor: pointer;
}

/* Hero */
.hero { padding: clamp(32px, 4.5vw, 64px) 0 clamp(48px, 6vw, 80px); overflow: hidden; }
.hero-inner { display: grid; grid-template-columns: 1.05fr 1fr; align-items: center; gap: clamp(32px, 4vw, 64px); }
.khmer { font-family: var(--khmer); font-size: clamp(1.25rem, 2.2vw, 1.75rem); color: var(--river); margin-bottom: 14px; font-weight: 600; }
.lede { font-size: clamp(1rem, 1.3vw, 1.125rem); color: var(--ink-soft); max-width: 34em; margin-top: 20px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }

/* Venn: the signature element */
.venn { position: relative; width: min(100%, 460px, calc(100svh - 190px)); aspect-ratio: 1; justify-self: center; }
.orb {
  position: absolute; width: 60%; aspect-ratio: 1; border-radius: 50%;
  mix-blend-mode: multiply; text-decoration: none; color: var(--ink);
  transition: transform .35s cubic-bezier(.2,.8,.2,1);
}
.orb span {
  position: absolute; font: 700 clamp(.9375rem, 1.5vw, 1.125rem)/1.1 var(--display);
  letter-spacing: -0.01em;
}
.orb-labs { background: var(--river); left: 0; top: 4%; color: var(--white); }
.orb-labs span { left: 20%; top: 30%; }
.orb-ventures { background: var(--mango); left: 40%; top: 4%; }
.orb-ventures span { right: 18%; top: 30%; }
.orb-goods { background: var(--lotus); left: 20%; top: 38%; }
.orb-goods span { left: 50%; bottom: 16%; transform: translateX(-50%); text-align: center; }
.orb:hover, .orb:focus-visible { transform: scale(1.04); }
.venn-core {
  position: absolute; left: 50%; top: 49%; transform: translate(-50%, -50%);
  font: 800 clamp(.9375rem, 1.5vw, 1.0625rem)/1 var(--display); color: var(--white);
  pointer-events: none; letter-spacing: -0.02em;
}

@media (prefers-reduced-motion: no-preference) {
  .orb-labs { animation: gather-labs 1.4s cubic-bezier(.2,.8,.2,1) both .1s; }
  .orb-ventures { animation: gather-ventures 1.4s cubic-bezier(.2,.8,.2,1) both .25s; }
  .orb-goods { animation: gather-goods 1.4s cubic-bezier(.2,.8,.2,1) both .4s; }
  .venn-core { animation: appear .6s ease both 1.5s; }
}
@keyframes gather-labs { from { transform: translate(-28%, -14%) scale(.8); opacity: 0; } }
@keyframes gather-ventures { from { transform: translate(28%, -14%) scale(.8); opacity: 0; } }
@keyframes gather-goods { from { transform: translate(0, 28%) scale(.8); opacity: 0; } }
@keyframes appear { from { opacity: 0; } }

/* Section heads */
.section-head { max-width: 720px; margin-bottom: clamp(32px, 4vw, 48px); }
.section-head p { font-size: clamp(1rem, 1.3vw, 1.125rem); color: var(--ink-soft); margin-top: 14px; max-width: 38em; }

/* Three arms */
.arms { padding: clamp(8px, 1.5vw, 24px) 0 var(--section); }
.arm-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; align-items: start; }
.arm { position: relative; overflow: hidden; border-radius: var(--radius-lg); padding: clamp(24px, 2.4vw, 32px); padding-top: 124px; min-height: 100%; }
.arm h3 { font-size: clamp(1.375rem, 1.9vw, 1.625rem); }
.arm-tag { font-weight: 600; margin: 6px 0 14px; }
.arm p:not(.arm-tag) { max-width: 30em; }
.arm-shape { position: absolute; top: 24px; left: clamp(24px, 2.4vw, 32px); width: 76px; height: 76px; }
.arm-labs { background: var(--river); color: var(--white); }
.arm-labs .arm-shape { border-radius: 18px; background: var(--white); opacity: .9; transform: rotate(12deg); }
.arm-ventures { background: var(--mango); margin-top: 24px; }
.arm-ventures .arm-shape { background: var(--ink); clip-path: polygon(50% 0, 100% 100%, 0 100%); }
.arm-goods { background: var(--lotus); margin-top: 48px; }
.arm-goods .arm-shape { background: var(--leaf); border-radius: 0 100% 0 100%; }

/* Tracks */
.tracks { background: var(--lilac); padding: var(--section) 0; }
.tracks-inner { display: grid; grid-template-columns: repeat(2, 1fr); gap: clamp(24px, 3vw, 40px) clamp(28px, 4vw, 64px); }
.tracks-inner h2 { grid-column: 1 / -1; max-width: 14em; }
.track { border-top: 5px solid; padding-top: 20px; }
.track-a { border-color: var(--river); }
.track-b { border-color: var(--lotus); }
.track p { margin-top: 10px; color: var(--ink-soft); max-width: 32em; }

/* Shared */
.shared { background: var(--ink); color: var(--white); padding: var(--section) 0; }
.shared-inner { display: grid; grid-template-columns: 1fr 1.2fr; gap: clamp(36px, 5vw, 72px); }
.shared-intro p { margin-top: 16px; color: #CFCBE8; max-width: 30em; font-size: clamp(1rem, 1.3vw, 1.125rem); }
.shared-list { display: grid; gap: 0; }
.shared-list div { padding: 18px 0; border-bottom: 1px solid #45406B; }
.shared-list div:first-child { padding-top: 0; }
.shared-list dt { font: 700 1.1875rem/1.2 var(--display); color: var(--mango); }
.shared-list dd { margin-top: 6px; color: #E4E1F5; }

/* Work with us */
.together { padding: var(--section) 0; }
.paths { display: grid; grid-template-columns: repeat(3, 1fr); gap: clamp(24px, 3vw, 40px); }
.path { border-left: 5px solid; padding-left: 20px; }
.path-founders { border-color: var(--river); }
.path-partners { border-color: var(--leaf); }
.path-investors { border-color: var(--mango); }
.path p { margin-top: 10px; color: var(--ink-soft); }

/* Contact */
.contact {
  background:
    radial-gradient(circle at 12% 120%, var(--lotus) 0 22%, transparent 22.2%),
    radial-gradient(circle at 92% -20%, var(--river) 0 26%, transparent 26.2%),
    var(--ink);
  color: var(--white); padding: clamp(72px, 9vw, 112px) 0; text-align: center;
}
.contact-inner { display: flex; flex-direction: column; align-items: center; gap: 18px; }
.contact h2 { font-size: clamp(2.5rem, 5.5vw, 4.25rem); }
.contact p { font-size: clamp(1rem, 1.3vw, 1.125rem); color: #E4E1F5; max-width: 30em; margin-bottom: 10px; }

/* Footer */
.site-footer { background: #17132F; color: #CFCBE8; padding: 28px 0; font-size: .9375rem; }
.footer-inner { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px 32px; }
.footer-brand { color: var(--white); font-weight: 600; }
.footer-brand span { margin-right: 8px; }

/* Responsive */
@media (max-width: 980px) {
  .hero-inner { grid-template-columns: 1fr; }
  .venn { width: min(100%, 400px); }
  .arm-grid { grid-template-columns: 1fr; }
  .arm-ventures, .arm-goods { margin-top: 0; }
  .shared-inner { grid-template-columns: 1fr; }
  .paths { grid-template-columns: 1fr; }
}

@media (max-width: 760px) {
  .nav-toggle { display: inline-block; }
  .site-nav {
    position: absolute; top: 72px; left: 0; right: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: var(--paper); padding: 8px var(--gutter) 24px;
    border-bottom: 1px solid #E3E0F0;
    display: none;
  }
  .site-nav.is-open { display: flex; }
  .site-nav a:not(.btn) { padding: 14px 0; border-bottom: 1px solid #ECE9F5; font-size: 1.0625rem; }
  .site-nav .btn { margin-top: 20px; }
  .tracks-inner { grid-template-columns: 1fr; }
  .arm { padding-top: 120px; }
}

@media (max-width: 380px) {
  .brand { gap: 8px; }
  .brand-mark { width: 42px; height: 28px; }
  .brand-word { font-size: 1.375rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .btn, .orb { transition: none; }
}

/* 404 page */
.not-found { min-height: 100vh; display: grid; place-items: center; }