/* BY.AI tokens — based on the design system, extended for landing */
@font-face {
  font-family: "Righteous";
  src: url("fonts/Righteous-Regular.ttf") format("truetype");
  font-weight: 400; font-display: swap;
}
@font-face {
  font-family: "Schibsted Grotesk";
  src: url("fonts/SchibstedGrotesk-Variable.ttf") format("truetype-variations");
  font-weight: 400 900; font-display: swap;
}
@font-face {
  font-family: "Pretendard";
  src: url("fonts/Pretendard-Variable.woff2") format("woff2-variations");
  font-weight: 100 900; font-display: swap;
}

:root {
  /* Colors */
  --byai-ink: #09090A;
  --byai-ink-2: #18191C;
  --byai-graphite: #676970;
  --byai-stroke: #E3E5ED;
  --byai-surface: #EDEFF5;
  --byai-paper: #FFFFFF;
  --byai-lime: #BAF06F;
  --byai-lime-deep: #A6E057;
  --byai-blush: #FF85B0;

  /* Type */
  --font-wordmark: "Righteous", system-ui, sans-serif;
  --font-display: "Schibsted Grotesk", "Schibsted Grotesk Variable", system-ui, sans-serif;
  --font-body: "Pretendard", "Pretendard Variable", system-ui, sans-serif;
  --tracking-display: -0.012em;
  --tracking-eyebrow: 0.14em;

  /* Spacing */
  --gutter: clamp(20px, 4vw, 56px);
  --max-content: 1200px;

  /* Radii */
  --r-sm: 8px;
  --r-md: 19px;
  --r-lg: 24px;
  --r-xl: 40px;
  --r-pill: 999px;

  /* Shadow */
  --shadow-card: 0 2px 0 rgba(9,9,10,1), 0 4px 0 rgba(9,9,10,1), 0 8px 14px rgba(58,51,82,0.10);
  --shadow-soft: 0 8px 14px rgba(58,51,82,0.10);
  --shadow-chip: 0 2px 6px rgba(9,9,10,.08), 0 6px 14px rgba(9,9,10,.06);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font-body);
  color: var(--byai-ink);
  background: var(--byai-paper);
  line-height: 1.55;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }
img { display: block; max-width: 100%; }

.container {
  width: 100%;
  max-width: var(--max-content);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.section { padding: clamp(72px, 9vw, 128px) 0; }

/* TYPE */
.wordmark {
  font-family: var(--font-wordmark);
  font-size: 24px;
  letter-spacing: .02em;
  color: var(--byai-ink);
}
.display-xl { font-family: var(--font-display); font-weight: 700; font-size: clamp(48px, 7vw, 96px); line-height: 1.02; letter-spacing: var(--tracking-display); margin: 0;}
.display-lg { font-family: var(--font-display); font-weight: 700; font-size: clamp(40px, 5vw, 64px); line-height: 1.05; letter-spacing: var(--tracking-display); margin: 0;}
.display-md { font-family: var(--font-display); font-weight: 700; font-size: clamp(28px, 3vw, 40px); line-height: 1.1; letter-spacing: var(--tracking-display); margin: 0;}
.display-sm { font-family: var(--font-display); font-weight: 700; font-size: clamp(20px, 1.6vw, 24px); line-height: 1.25; letter-spacing: -.008em; margin: 0;}
.lede { font-size: clamp(16px, 1.3vw, 18px); line-height: 1.6; color: var(--byai-ink); max-width: 56ch; }
.muted { color: var(--byai-graphite); }

.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-body); font-weight: 700;
  font-size: 12px; letter-spacing: var(--tracking-eyebrow);
  text-transform: uppercase; color: var(--byai-ink);
}
.eyebrow::before {
  content: ""; display: inline-block; width: 18px; height: 2px; background: var(--byai-ink);
}
.eyebrow.is-light, .eyebrow.is-light { color: rgba(255,255,255,.8); }
.eyebrow.is-light::before { background: var(--byai-lime); }

/* BUTTONS */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  border: 0; border-radius: 999px;
  padding: 14px 22px;
  font-family: var(--font-body); font-weight: 700;
  font-size: 13px; letter-spacing: .12em;
  text-transform: uppercase;
  transition: transform 140ms ease, filter 140ms ease, background 140ms ease, color 140ms ease;
}
.btn--sm { padding: 10px 18px; font-size: 12px;}
.btn--lg { padding: 18px 28px; font-size: 13px;}
.btn--xl { padding: 22px 36px; font-size: 14px; letter-spacing: .04em;}
.btn--lime { background: var(--byai-lime); color: var(--byai-ink);}
.btn--lime:hover { filter: brightness(.96); transform: translateY(-1px);}
.btn--dark { background: var(--byai-ink); color: #fff;}
.btn--dark:hover { filter: brightness(1.15); transform: translateY(-1px);}
.btn--link {
  background: transparent;
  color: var(--byai-ink);
  border: 1.5px solid var(--byai-ink);
}
.btn--link:hover { background: var(--byai-ink); color: #fff; transform: translateY(-1px); }
.btn--ghost { background: transparent; color: var(--byai-ink); border: 1.5px solid transparent;}
.btn--ghost:hover { color: var(--byai-graphite); }
.btn .arrow { transition: transform 180ms ease; }
.btn:hover .arrow { transform: translateX(3px); }

/* NAV */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(255,255,255,.78);
  backdrop-filter: saturate(180%) blur(18px);
  -webkit-backdrop-filter: saturate(180%) blur(18px);
  border-bottom: 1px solid transparent;
  transition: border-color 240ms, background 240ms;
}
.nav.is-scrolled { border-color: var(--byai-stroke); background: rgba(255,255,255,.92);}
.nav__inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 72px;
}
.nav__links { display: flex; gap: 32px; }
.nav__link {
  font-size: 14px; font-weight: 500; color: var(--byai-ink-2);
  position: relative; padding: 4px 0;
}
.nav__link::after { content:""; position:absolute; left:0; right:100%; bottom:0; height: 1.5px; background: var(--byai-lime); transition: right 200ms ease;}
.nav__link:hover::after { right: 0; }
@media (max-width: 720px) { .nav__links { display: none; } }

/* TAB CHIP (figma signature) */
.tab-chip {
  display: inline-block;
  background: var(--byai-ink); color: #fff;
  border-radius: 0 0 20px 20px;
  padding: 7px 16px 9px;
  font-family: var(--font-body); font-weight: 700;
  font-size: 11px; letter-spacing: .14em; text-transform: uppercase;
}

/* PANELS */
.panel { border-radius: var(--r-xl); padding: clamp(40px, 5vw, 80px); }
.panel--surface { background: var(--byai-surface); }
.panel--ink { background: var(--byai-ink); color: #fff; }
.panel--ink h2, .panel--ink h3 { color: #fff; }
.panel--ink .muted { color: rgba(255,255,255,.7);}

/* HALO */
.halo {
  position: absolute; inset: -8% -10% auto -10%;
  height: 70%;
  background: radial-gradient(ellipse at center, var(--byai-surface) 0%, rgba(237,239,245,0) 70%);
  pointer-events: none;
  z-index: -1;
}
.blob-lime { position: absolute; border-radius: 50%; background: var(--byai-lime); pointer-events: none; z-index: -1;}
.blob-lime--soft { opacity: .55; filter: blur(2px); }

/* REVEAL */
.reveal { opacity: 1; transform: translateY(0); transition: opacity 700ms cubic-bezier(.2,.7,.2,1), transform 700ms cubic-bezier(.2,.7,.2,1);}
.reveal:not(.is-in).is-pending { opacity: 0; transform: translateY(14px); }
.reveal.is-in { opacity: 1 !important; transform: translateY(0) !important; }
.reveal[data-delay="1"] { transition-delay: 80ms; }
.reveal[data-delay="2"] { transition-delay: 160ms; }
.reveal[data-delay="3"] { transition-delay: 240ms; }
.reveal[data-delay="4"] { transition-delay: 320ms; }
.reveal[data-delay="5"] { transition-delay: 400ms; }
.reveal[data-delay="6"] { transition-delay: 480ms; }

/* MODAL */
.modal-scrim {
  position: fixed; inset: 0; z-index: 100;
  background: rgba(9,9,10,.6);
  display: none; align-items: center; justify-content: center;
  padding: 24px;
  opacity: 0; transition: opacity 240ms ease;
}
.modal-scrim.is-open { display: flex; opacity: 1; }
.modal {
  width: 100%; max-width: 540px;
  background: #fff; border-radius: var(--r-lg);
  padding: 40px;
  max-height: 90vh; overflow-y: auto;
  transform: translateY(8px); transition: transform 320ms cubic-bezier(.2,.7,.2,1);
}
.modal-scrim.is-open .modal { transform: translateY(0); }
.modal__close {
  position: absolute; top: 16px; right: 16px;
  width: 32px; height: 32px; border-radius: 50%;
  background: var(--byai-surface); border: 0;
  display: flex; align-items: center; justify-content: center;
}
.modal__close:hover { background: var(--byai-stroke); }
.field { margin-bottom: 16px; }
.field label { display: block; font-size: 12px; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; color: var(--byai-graphite); margin-bottom: 6px;}
.field input, .field textarea, .field select {
  width: 100%; font: inherit; padding: 12px 14px;
  border: 1.5px solid var(--byai-stroke); border-radius: 10px;
  background: #fff; transition: border-color 140ms;
}
.field input:focus, .field textarea:focus, .field select:focus { outline: none; border-color: var(--byai-ink); }
.field textarea { resize: vertical; min-height: 90px; }

.wordmark__suffix { font-size: .5em; letter-spacing: .12em; color: var(--byai-graphite); }

.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
@media (max-width: 480px) { .field-row { grid-template-columns: 1fr; } }

.visually-hidden {
  position: absolute; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}