/* ============ TOKENS ============ */
:root {
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl: clamp(2rem, 1.2rem + 2.5vw, 3.5rem);
  --text-3xl: clamp(2.5rem, 1rem + 4vw, 5rem);

  --space-1: 0.25rem; --space-2: 0.5rem; --space-3: 0.75rem; --space-4: 1rem;
  --space-5: 1.25rem; --space-6: 1.5rem; --space-8: 2rem; --space-10: 2.5rem;
  --space-12: 3rem; --space-16: 4rem; --space-20: 5rem; --space-24: 6rem; --space-32: 8rem;

  --radius-sm: 0.375rem; --radius-md: 0.5rem; --radius-lg: 0.75rem; --radius-full: 9999px;
  --transition: 200ms cubic-bezier(0.16, 1, 0.3, 1);

  --content: 1120px;

  --font-display: 'Archivo', 'Helvetica Neue', sans-serif;
  --font-body: 'Inter', 'Helvetica Neue', sans-serif;
}

/* DARK — the only theme (all black, per brand) */
:root, [data-theme="dark"] {
  --color-bg: #0a0a0a;
  --color-surface: #121212;
  --color-surface-2: #171717;
  --color-border: #262626;
  --color-text: #f5f5f5;
  --color-text-muted: #9a9a9a;
  --color-text-faint: #6a6a6a;
  --color-accent: #22c55e;
  --color-accent-hover: #16a34a;
  --color-on-accent: #062611;
  --glow: rgba(34, 197, 94, 0.16);
}

/* ============ BASE ============ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html {
  -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility; scroll-behavior: smooth; scroll-padding-top: 5rem;
}
body {
  min-height: 100dvh; line-height: 1.6; font-family: var(--font-body);
  font-size: var(--text-base); color: var(--color-text);
  background: var(--color-bg);
  transition: background var(--transition), color var(--transition);
}
img, svg { display: block; max-width: 100%; }
input, button, textarea { font: inherit; color: inherit; }
h1, h2, h3 { text-wrap: balance; line-height: 1.08; font-family: var(--font-display); letter-spacing: -0.02em; }
p { text-wrap: pretty; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; background: none; border: none; }
::selection { background: rgba(255,255,255,0.18); color: var(--color-text); }
:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 3px; border-radius: var(--radius-sm); }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; transition-duration: .01ms !important; scroll-behavior: auto !important; }
}
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.skip-link:focus { position: fixed; top: var(--space-4); left: var(--space-4); width: auto; height: auto; clip: auto; padding: var(--space-2) var(--space-4); background: var(--color-accent); color: var(--color-on-accent); z-index: 200; border-radius: var(--radius-md); }

.container { width: 100%; max-width: var(--content); margin-inline: auto; padding-inline: var(--space-6); }

/* ============ BRAND ============ */
.brand { display: inline-flex; align-items: center; color: var(--color-text); }
.brand__mark { width: auto; height: 40px; flex-shrink: 0; }
.brand--footer .brand__mark { height: 96px; }

/* ============ HEADER ============ */
.header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in oklab, var(--color-bg) 82%, transparent);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), background var(--transition);
}
.header--scrolled { border-bottom-color: var(--color-border); }
.header__inner { display: flex; align-items: center; justify-content: space-between; height: 4.5rem; }
.nav { display: flex; align-items: center; gap: var(--space-6); }
.nav__link { font-size: var(--text-sm); font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; color: var(--color-text-muted); transition: color var(--transition); }
.nav__link:hover { color: var(--color-text); }
.nav__link--cta { color: var(--color-accent); }
.nav__link--cta:hover { color: var(--color-accent-hover); }

/* ============ BUTTONS ============ */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--space-2);
  font-family: var(--font-display); font-weight: 700; font-size: var(--text-sm);
  letter-spacing: 0.04em; text-transform: uppercase;
  padding: var(--space-4) var(--space-8); border-radius: var(--radius-md);
  transition: transform var(--transition), background var(--transition), box-shadow var(--transition);
}
.btn--primary { background: var(--color-accent); color: var(--color-on-accent); box-shadow: 0 8px 24px var(--glow); }
.btn--primary:hover { background: var(--color-accent-hover); transform: translateY(-2px); }
.btn--primary svg { transition: transform var(--transition); }
.btn--primary:hover svg { transform: translateX(4px); }
.btn--full { width: 100%; }

/* ============ SECTION LABEL ============ */
.section-label { display: inline-block; font-size: var(--text-xs); font-weight: 700; letter-spacing: 0.24em; text-transform: uppercase; color: var(--color-accent); margin-bottom: var(--space-5); }
.section-label--rule { display: flex; align-items: center; gap: var(--space-4); margin-bottom: var(--space-12); }
.section-label--rule::before { content: ""; width: 2.5rem; height: 1px; background: var(--color-accent); flex-shrink: 0; }

/* ============ HERO ============ */
.hero { position: relative; overflow: hidden; padding-block: clamp(var(--space-24), 14vw, 10rem); text-align: center; }
.hero__glow { position: absolute; top: -10%; left: 50%; transform: translateX(-50%); width: min(1100px, 130%); height: 560px; background: radial-gradient(ellipse at center, rgba(255,255,255,0.05), transparent 70%); pointer-events: none; z-index: 0; }
.hero__inner { position: relative; z-index: 1; display: flex; flex-direction: column; align-items: center; }
.hero__logo { margin-bottom: var(--space-8); }
.hero__logo img { width: clamp(180px, 24vw, 260px); height: auto; }
.hero__eyebrow { font-size: var(--text-xs); font-weight: 600; letter-spacing: 0.28em; text-transform: uppercase; color: var(--color-text-muted); margin-bottom: var(--space-5); }
.hero__title { font-size: var(--text-2xl); font-weight: 800; }
.hero__lede { max-width: 52ch; margin: var(--space-6) auto var(--space-10); color: var(--color-text-muted); font-size: var(--text-lg); line-height: 1.55; }

/* ============ MISSION ============ */
.mission { padding-block: clamp(var(--space-16), 10vw, var(--space-32)); border-top: 1px solid var(--color-border); }
.mission__inner { max-width: 900px; margin-inline: auto; text-align: center; }
.mission__body { font-size: clamp(1.15rem, 0.9rem + 1vw, 1.6rem); line-height: 1.5; color: var(--color-text); font-family: var(--font-display); font-weight: 500; letter-spacing: -0.01em; }
.mission__body strong { color: var(--color-accent); font-weight: 700; }
.pillars { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-6); margin-top: var(--space-16); text-align: left; }
.pillar { padding: var(--space-8); background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-lg); transition: border-color var(--transition), transform var(--transition); }
.pillar:hover { border-color: var(--color-accent); transform: translateY(-4px); }
.pillar__num { font-family: var(--font-display); font-weight: 800; font-size: var(--text-lg); color: var(--color-accent); }
.pillar__title { font-size: var(--text-lg); font-weight: 700; margin: var(--space-4) 0 var(--space-2); }
.pillar__text { font-size: var(--text-sm); color: var(--color-text-muted); }

/* ============ MISSION LOCKUP CARD ============ */
.mission__card { display: flex; align-items: center; justify-content: center; width: fit-content; margin: 0 auto var(--space-12); padding: var(--space-10) var(--space-12); background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-lg); }
.mission__lockup { width: clamp(180px, 22vw, 230px); height: auto; }

/* ============ FEATURE SECTIONS (What / Why / Platform) ============ */
.feature { padding-block: clamp(var(--space-16), 9vw, var(--space-24)); border-top: 1px solid var(--color-border); }
.platform__lede { max-width: 62ch; color: var(--color-text-muted); font-size: var(--text-lg); line-height: 1.55; margin-bottom: var(--space-12); margin-top: calc(-1 * var(--space-6)); }
.grid-cards { display: grid; gap: var(--space-5); }
.grid-cards--what { grid-template-columns: repeat(2, 1fr); }
.grid-cards--why { grid-template-columns: repeat(3, 1fr); }
.card { position: relative; padding: var(--space-8); background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-lg); transition: border-color var(--transition), transform var(--transition); }
.card:hover { border-color: var(--color-accent); transform: translateY(-4px); }
.card--wide { grid-column: 1 / -1; }
.card--accent { background: color-mix(in oklab, var(--color-accent) 8%, var(--color-surface)); border-color: color-mix(in oklab, var(--color-accent) 30%, var(--color-border)); }
.card__num { font-family: var(--font-display); font-weight: 800; font-size: var(--text-lg); color: var(--color-accent); }
.card__title { font-size: var(--text-lg); font-weight: 700; text-transform: uppercase; letter-spacing: 0.01em; margin: var(--space-4) 0 var(--space-3); }
.card__text { font-size: var(--text-sm); color: var(--color-text-muted); line-height: 1.6; }
.card--soon { padding-top: var(--space-12); }
.badge { position: absolute; top: var(--space-6); right: var(--space-6); font-family: var(--font-display); font-size: 0.65rem; font-weight: 700; letter-spacing: 0.16em; text-transform: uppercase; color: var(--color-accent); padding: var(--space-1) var(--space-3); border: 1px solid color-mix(in oklab, var(--color-accent) 45%, transparent); border-radius: var(--radius-full); }

/* ============ CONTACT ============ */
.contact { padding-block: clamp(var(--space-16), 10vw, var(--space-32)); border-top: 1px solid var(--color-border); background: var(--color-surface); }
.contact__inner { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(var(--space-10), 6vw, var(--space-24)); align-items: start; }
.contact__title { font-size: var(--text-xl); font-weight: 800; margin-bottom: var(--space-4); }
.contact__text { color: var(--color-text-muted); margin-bottom: var(--space-6); max-width: 42ch; }
.contact__details { display: flex; flex-direction: column; gap: var(--space-5); margin-top: var(--space-8); }
.contact__detail { display: flex; flex-direction: column; gap: var(--space-1); }
.contact__detail-label { font-size: var(--text-xs); font-weight: 700; letter-spacing: 0.16em; text-transform: uppercase; color: var(--color-text-faint); }
.contact__detail a { font-family: var(--font-display); font-weight: 600; font-size: var(--text-base); color: var(--color-text); width: fit-content; border-bottom: 1px solid transparent; transition: color var(--transition), border-color var(--transition); }
.contact__detail a:hover { color: var(--color-accent); border-bottom-color: var(--color-accent); }

.contact__form { display: flex; flex-direction: column; gap: var(--space-5); }
.field { display: flex; flex-direction: column; gap: var(--space-2); }
.field label { font-size: var(--text-xs); font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; color: var(--color-text-muted); }
.field input, .field textarea {
  width: 100%; padding: var(--space-3) var(--space-4); border-radius: var(--radius-md);
  background: var(--color-bg); border: 1px solid var(--color-border); color: var(--color-text);
  font-size: var(--text-base); transition: border-color var(--transition), box-shadow var(--transition);
  resize: vertical;
}
.field input:focus, .field textarea:focus { outline: none; border-color: var(--color-accent); box-shadow: 0 0 0 3px var(--glow); }
.form-status { font-size: var(--text-sm); min-height: 1.2em; }
.form-status--ok { color: var(--color-accent); }
.form-status--err { color: #f87171; }

/* ============ FOOTER ============ */
.footer { padding-block: var(--space-12); border-top: 1px solid var(--color-border); }
.footer__inner { display: flex; flex-direction: column; align-items: center; gap: var(--space-4); text-align: center; }
.footer__meta { font-size: var(--text-sm); color: var(--color-text-muted); }
.footer__meta a { color: var(--color-accent); }
.footer__copy { font-size: var(--text-xs); color: var(--color-text-faint); }

/* ============ RESPONSIVE ============ */
@media (max-width: 860px) {
  .contact__inner { grid-template-columns: 1fr; }
  .pillars { grid-template-columns: 1fr; gap: var(--space-4); }
  .grid-cards--what, .grid-cards--why { grid-template-columns: 1fr; }
  .card--wide { grid-column: auto; }
}
@media (max-width: 560px) {
  .nav { gap: var(--space-4); }
  .brand__mark { height: 34px; }
}