/* ---- Self-hosted fonts (latin subset, woff2) ---- */
@font-face {
  font-family: 'Syne';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('/assets/fonts/syne-latin-700.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'Syne';
  font-style: normal;
  font-weight: 800;
  font-display: swap;
  src: url('/assets/fonts/syne-latin-800.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'Hanken Grotesk';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('/assets/fonts/hanken-grotesk-latin-400.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'Hanken Grotesk';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url('/assets/fonts/hanken-grotesk-latin-500.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'Hanken Grotesk';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url('/assets/fonts/hanken-grotesk-latin-600.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'Hanken Grotesk';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('/assets/fonts/hanken-grotesk-latin-700.woff2') format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

/* ==========================================================================
   GeniGPT design system — shared tokens + site chrome
   Loaded by every page. Page-specific styles stay inline per page.
   ========================================================================== */

/* ---- Tokens ---- */
:root {
  /* Color */
  --bg: #0a0a0b;
  --bg-elev: #121214;
  --bg-card: #17171a;
  --bg-input: #1c1c20;
  --border: #26262b;
  --border-strong: #3f3f46;

  --ink: #f4f4f3;            /* primary text  ~17.4:1 on --bg */
  --ink-secondary: #b3b3b8;  /* secondary     ~8.6:1 */
  --ink-muted: #8e8e95;      /* captions/meta ~5.8:1 — minimum allowed text color */

  --brand: #00ff88;          /* signature green — CTAs, focus, key highlights only */
  --brand-strong: #00e07a;   /* hover/active */
  --brand-tint: rgba(0, 255, 136, 0.10);
  --on-brand: #051710;       /* text on green surfaces ~13.9:1 */

  --danger: #ff6b6b;
  --danger-tint: rgba(255, 107, 107, 0.12);

  /* Type */
  --font-display: 'Syne', 'Hanken Grotesk', sans-serif;
  --font-sans: 'Hanken Grotesk', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  /* Radius */
  --r-sm: 8px;
  --r-md: 12px;
  --r-lg: 18px;
  --r-full: 999px;

  /* Z scale (semantic — never use arbitrary values) */
  --z-nav: 100;
  --z-sticky: 200;
  --z-overlay: 300;
  --z-modal: 400;
  --z-toast: 500;
  --z-tooltip: 600;

  /* Motion */
  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --t-fast: 150ms;
  --t-med: 250ms;
  --t-slow: 600ms;
}

/* ---- Base ---- */
*, *::before, *::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

h1, h2, h3 { text-wrap: balance; margin: 0; }
p { margin: 0; text-wrap: pretty; }
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; }
button { font: inherit; }

::selection { background: var(--brand); color: var(--on-brand); }

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

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

.skip-link {
  position: absolute;
  top: -48px; left: 16px;
  z-index: var(--z-tooltip);
  background: var(--brand);
  color: var(--on-brand);
  font-weight: 600;
  padding: 10px 18px;
  border-radius: var(--r-sm);
  text-decoration: none;
  transition: top var(--t-fast) var(--ease-out);
}
.skip-link:focus { top: 12px; }

.container {
  width: 100%;
  max-width: 1200px;
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 4vw, 2.5rem);
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 44px;
  padding: 0.65rem 1.4rem;
  border-radius: var(--r-full);
  border: 1px solid transparent;
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
  transition: background var(--t-fast) var(--ease-out),
              border-color var(--t-fast) var(--ease-out),
              color var(--t-fast) var(--ease-out),
              transform var(--t-fast) var(--ease-out);
}
.btn:active { transform: scale(0.98); }
.btn[disabled], .btn[aria-disabled="true"] {
  opacity: 0.45;
  cursor: not-allowed;
  transform: none;
}

.btn-primary { background: var(--brand); color: var(--on-brand); }
.btn-primary:hover { background: var(--brand-strong); }

.btn-secondary {
  background: transparent;
  color: var(--ink);
  border-color: var(--border-strong);
}
.btn-secondary:hover { border-color: var(--ink-muted); background: var(--bg-elev); }

.btn-ghost { background: transparent; color: var(--ink-secondary); }
.btn-ghost:hover { color: var(--ink); background: var(--bg-elev); }

.btn-sm { min-height: 38px; padding: 0.4rem 1.1rem; font-size: 0.9375rem; }

/* ---- Site header ---- */
.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-nav);
  background: rgba(10, 10, 11, 0.82);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 64px;
}

.logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: -0.01em;
  color: var(--ink);
  text-decoration: none;
  white-space: nowrap;
}
.logo .logo-dot { color: var(--brand); }

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(0.25rem, 1.5vw, 1rem);
}
.site-nav a:not(.btn) {
  color: var(--ink-secondary);
  text-decoration: none;
  font-size: 0.9375rem;
  font-weight: 500;
  padding: 0.5rem 0.75rem;
  border-radius: var(--r-sm);
  transition: color var(--t-fast) var(--ease-out), background var(--t-fast) var(--ease-out);
}
.site-nav a:not(.btn):hover { color: var(--ink); background: var(--bg-elev); }
.site-nav a:not(.btn)[aria-current="page"] { color: var(--brand); }

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  background: none;
  border: 0;
  cursor: pointer;
  border-radius: var(--r-sm);
}
.nav-toggle span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--ink);
  border-radius: 1px;
  transition: transform var(--t-med) var(--ease-out), opacity var(--t-med) var(--ease-out);
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { transform: translateY(-0px) rotate(-45deg); opacity: 1; }

@media (max-width: 899px) {
  .nav-toggle { display: flex; }
  .site-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0.25rem;
    padding: 1rem clamp(1.25rem, 4vw, 2.5rem) 1.5rem;
    background: var(--bg-elev);
    border-bottom: 1px solid var(--border);
  }
  .site-nav.open { display: flex; }
  .site-nav a:not(.btn) { padding: 0.85rem 0.75rem; font-size: 1.0625rem; }
  .site-nav .btn { margin-top: 0.5rem; }
}

/* ---- Site footer ---- */
.site-footer {
  border-top: 1px solid var(--border);
  margin-top: clamp(4rem, 10vw, 7rem);
  padding: clamp(2.5rem, 6vw, 4rem) 0 2rem;
  font-size: 0.9375rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 2.5rem 2rem;
  margin-bottom: 2.5rem;
}

.footer-brand p {
  color: var(--ink-muted);
  max-width: 36ch;
  margin-top: 0.75rem;
}

.footer-col h2,
.footer-col .footer-title {
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin: 0 0 1rem;
}

.footer-col ul { list-style: none; margin: 0; padding: 0; }
.footer-col li { margin-bottom: 0.6rem; }
.footer-col a {
  color: var(--ink-secondary);
  text-decoration: none;
  transition: color var(--t-fast) var(--ease-out);
}
.footer-col a:hover { color: var(--ink); }

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
  justify-content: space-between;
  align-items: center;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  color: var(--ink-muted);
  font-size: 0.875rem;
}

/* ---- Small shared pieces ---- */
.pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.3rem 0.85rem;
  border-radius: var(--r-full);
  border: 1px solid var(--border-strong);
  background: var(--bg-elev);
  color: var(--ink-secondary);
  font-size: 0.8125rem;
  font-weight: 500;
}
.pill-brand {
  border-color: transparent;
  background: var(--brand-tint);
  color: var(--brand);
}

/* ---- Reduced motion ---- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}