/* Lobi site-wide styles — extends tokens.css with full Design.md system.
   Loaded after tokens.css. */

/* ---------- Theme aliases (Design.md §14) ---------- */
:root {
  --bg: var(--paper);
  --bg-2: var(--paper-2);
  --surface: var(--white);
  --fg: var(--dark);
  --fg-muted: var(--muted);
  --accent: var(--teal);
  --accent-hover: var(--teal-700);
  --moment: var(--gold);

  --ink-900: #1a1a2e;
  --ink-700: #2e2e42;
  --ink-500: #5a5a72;
  --ink-400: #8a8aa0;
  --ink-200: #d8d8e0;
  --ink-100: #ececf2;

  --shadow-1: 0 1px 2px rgba(26,26,46,0.06), 0 1px 1px rgba(26,26,46,0.04);
  --shadow-2: 0 4px 12px rgba(26,26,46,0.06), 0 2px 4px rgba(26,26,46,0.04);
  --shadow-3: 0 12px 32px rgba(26,26,46,0.08), 0 4px 8px rgba(26,26,46,0.04);
  --shadow-focus: 0 0 0 3px rgba(13,148,136,0.35);

  --motion-instant: 80ms;
  --motion-quick: 160ms;
  --motion-default: 240ms;
  --motion-slow: 400ms;
  --ease-out: cubic-bezier(0.2, 0.8, 0.2, 1);

  --container-prose: 64ch;
  --container-narrow: 720px;
  --container-default: 1080px;
  --container-wide: 1240px;
  --gutter: clamp(20px, 5vw, 48px);
}

[data-theme="dark"] {
  --bg: #0f1117;
  --bg-2: #161924;
  --surface: #1c2030;
  --fg: #f5f3ec;
  --fg-muted: #b8b8c8;
  --accent: var(--gold);
  --accent-hover: #f5b933;
  --moment: var(--gold);
}
[data-theme="dark"] :focus-visible { box-shadow: 0 0 0 3px rgba(249, 199, 79, 0.55); }

[data-theme="letter"] {
  /* Founder Letter ground — warm cream, slightly darker than --paper.
     Per Design.md §1.4 + Open Question §16.1. */
  --bg: #f5efe2;
  --bg-2: #ebe3cf;
  --surface: #fbf7ec;
  --fg: var(--ink-900);
  --fg-muted: #5a4a30;
  /* Accent stays teal per §1.4 — protects brand recognition across themes. */
}
[data-theme="letter"] .lobi-root .rule { background: rgba(26,26,46,0.10); }
[data-theme="letter"] .site-nav { border-bottom-color: rgba(26,26,46,0.08); }

@media (prefers-reduced-motion: reduce) {
  :root {
    --motion-instant: 0ms; --motion-quick: 0ms; --motion-default: 0ms; --motion-slow: 0ms;
  }
  * { animation: none !important; transition: none !important; }
}

/* ---------- Reset / base on .lobi-root ---------- */
.lobi-root {
  font-size: 17px; line-height: 1.6;
  background: var(--bg);
  color: var(--fg);
}
@media (min-width: 768px) {
  .lobi-root { font-size: 18px; }
}

.lobi-root img { max-width: 100%; display: block; }
.lobi-root :focus-visible {
  outline: none;
  box-shadow: var(--shadow-focus);
  border-radius: inherit;
}

/* ---------- Typography utilities ---------- */
.lobi-root .display {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(40px, 7vw, 72px);
  line-height: 1.05;
  letter-spacing: -0.02em;
  text-wrap: balance;
}
.lobi-root .h1 {
  font-family: var(--font-display); font-weight: 600;
  font-size: clamp(30px, 5vw, 48px); line-height: 1.1;
  letter-spacing: -0.015em; text-wrap: balance;
}
.lobi-root .h2 {
  font-family: var(--font-display); font-weight: 600;
  font-size: clamp(24px, 3.6vw, 34px); line-height: 1.2;
  letter-spacing: -0.01em; text-wrap: balance;
}
.lobi-root .h3 {
  font-family: var(--font-display); font-weight: 600;
  font-size: clamp(20px, 2.4vw, 24px); line-height: 1.3;
}
.lobi-root .h4 {
  font-family: var(--font-display); font-weight: 700;
  font-size: 18px; line-height: 1.35;
}
.lobi-root .body-lg {
  font-size: clamp(18px, 2vw, 21px); line-height: 1.55;
  color: var(--fg-muted); text-wrap: pretty;
}
.lobi-root .caption {
  font-size: 13px; line-height: 1.45; letter-spacing: 0.02em;
  color: var(--fg-muted);
}
.lobi-root .label {
  font-family: var(--font-display); font-size: 12px; font-weight: 600;
  letter-spacing: 0.12em; text-transform: uppercase; color: var(--fg-muted);
}
.lobi-root .quote-pull {
  font-family: var(--font-serif); font-style: italic; font-weight: 400;
  font-size: clamp(22px, 3.2vw, 32px); line-height: 1.35;
  letter-spacing: -0.01em; color: var(--fg);
}
.lobi-root .moment-dot {
  display: inline-block; width: 0.6em; height: 0.6em; border-radius: 999px;
  background: var(--moment); vertical-align: 0.05em; margin: 0 0.05em;
}

/* ---------- Layout ---------- */
.lobi-root .container { max-width: var(--container-default); margin: 0 auto; padding: 0 var(--gutter); }
.lobi-root .container.narrow { max-width: var(--container-narrow); }
.lobi-root .container.wide { max-width: var(--container-wide); }
.lobi-root .container.prose { max-width: var(--container-prose); }
.lobi-root .stack > * + * { margin-top: var(--stack, 16px); }

/* ---------- Buttons (Design.md §4) ---------- */
.lobi-root .btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 48px; padding: 0 22px;
  font-family: var(--font-body); font-weight: 600; font-size: 16px;
  letter-spacing: 0.005em;
  border-radius: var(--radius);
  background: var(--accent); color: var(--white);
  transition: background var(--motion-quick) var(--ease-out);
  white-space: nowrap;
}
.lobi-root .btn:hover { background: var(--accent-hover); }
.lobi-root .btn:active { transform: scale(0.99); }
.lobi-root .btn.btn-lg { height: 56px; padding: 0 28px; font-size: 17px; }
.lobi-root .btn.btn-xl { height: 60px; padding: 0 32px; font-size: 18px; }
.lobi-root .btn.btn-sm { height: 38px; padding: 0 16px; font-size: 14px; }
.lobi-root .btn.btn-secondary {
  background: transparent; color: var(--accent);
  box-shadow: inset 0 0 0 1.5px var(--accent);
}
.lobi-root .btn.btn-secondary:hover { background: rgba(13,148,136,0.06); }
.lobi-root .btn.btn-ghost {
  background: transparent; color: var(--fg);
}
.lobi-root .btn.btn-ghost:hover { background: var(--bg-2); }
.lobi-root .btn.btn-quiet {
  background: var(--bg-2); color: var(--fg);
}
.lobi-root .btn.btn-quiet:hover { background: var(--ink-100); }
[data-theme="dark"] .lobi-root .btn,
.lobi-root [data-theme="dark"] .btn {
  background: var(--gold); color: var(--ink-900);
}
[data-theme="dark"] .lobi-root .btn:hover,
.lobi-root [data-theme="dark"] .btn:hover { background: #f5b933; }

/* ---------- Cards (Design.md §5) ---------- */
.lobi-root .card {
  background: var(--surface);
  border: 1px solid var(--ink-100);
  border-radius: var(--radius-lg);
  padding: 28px;
}
.lobi-root .card.quiet { background: var(--bg-2); border: 0; }
.lobi-root .card.trust { border: 1.5px solid var(--accent); box-shadow: none; }
.lobi-root .card.quote { background: var(--teal-50); border: 0; }

/* ---------- Tags ---------- */
.lobi-root .tag {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 13px; font-weight: 500; letter-spacing: 0.02em;
  padding: 4px 10px; border-radius: var(--radius-pill);
  background: var(--teal-50); color: var(--ink-900);
}
.lobi-root .tag.tag-line {
  background: var(--surface); border: 1px solid var(--ink-200); color: var(--fg-muted);
}
.lobi-root .tag.tag-warm {
  background: var(--gold-soft); color: #6a4a00;
}
.lobi-root .tag.tag-orange {
  background: #feead8; color: #7a3a00;
}

/* ---------- Hairline rule ---------- */
.lobi-root .rule { height: 1px; background: var(--ink-100); border: 0; }
[data-theme="dark"] .lobi-root .rule { background: rgba(255,255,255,0.08); }

/* ---------- Section vertical rhythm ---------- */
.lobi-root section { padding: 64px 0; }
@media (min-width: 768px) { .lobi-root section { padding: 96px 0; } }

/* ---------- Draft ribbon ---------- */
.draft-ribbon {
  position: sticky; top: 0; z-index: 60;
  background: var(--ink-900);
  color: rgba(245,243,236,0.92);
  font-size: 13px; line-height: 1.5;
  letter-spacing: 0.01em;
}
.draft-ribbon .container {
  display: flex; align-items: center; gap: 12px;
  min-height: 36px;
  padding-top: 8px; padding-bottom: 8px;
}
.draft-ribbon strong {
  font-family: var(--font-display); font-weight: 600;
  color: #f5f3ec;
  letter-spacing: 0.04em;
}
.draft-ribbon .dot {
  width: 6px; height: 6px; flex: 0 0 6px;
  border-radius: 999px;
  background: var(--gold);
  box-shadow: 0 0 0 4px rgba(249, 199, 79, 0.18);
}

/* ---------- Site nav ---------- */
.site-nav {
  position: sticky; top: 36px; z-index: 50;
  background: color-mix(in oklab, var(--bg) 88%, transparent);
  backdrop-filter: saturate(140%) blur(8px);
  -webkit-backdrop-filter: saturate(140%) blur(8px);
  border-bottom: 1px solid var(--ink-100);
}
[data-theme="dark"] .site-nav { border-bottom-color: rgba(255,255,255,0.08); }
.site-nav .container {
  display: flex; align-items: center; justify-content: space-between;
  height: 68px;
}
.site-nav .nav-links {
  display: none; gap: 28px;
  font-size: 15px; font-weight: 500; color: var(--fg-muted);
}
.site-nav .nav-links a:hover { color: var(--fg); }
@media (min-width: 768px) { .site-nav .nav-links { display: flex; } }
.site-nav .menu-btn {
  display: inline-flex; align-items: center; justify-content: center;
  width: 40px; height: 40px; border-radius: 999px;
  background: transparent; color: var(--fg);
}
@media (min-width: 768px) { .site-nav .menu-btn { display: none; } }

/* ---------- Site footer ---------- */
.site-footer {
  background: var(--ink-900); color: rgba(245,243,236,0.78);
  padding: 64px 0 40px;
  font-size: 15px; line-height: 1.6;
}
.site-footer a { color: rgba(245,243,236,0.78); }
.site-footer a:hover { color: #f5f3ec; }
.site-footer h4 {
  font-family: var(--font-display); font-weight: 600; font-size: 14px;
  letter-spacing: 0.06em; text-transform: uppercase;
  color: rgba(245,243,236,0.5); margin-bottom: 16px;
}
.site-footer .footer-grid {
  display: grid; gap: 40px;
  grid-template-columns: 1fr;
}
@media (min-width: 768px) {
  .site-footer .footer-grid { grid-template-columns: 1.5fr 1fr 1fr 1fr; }
}
.site-footer .legal {
  margin-top: 48px; padding-top: 24px; border-top: 1px solid rgba(245,243,236,0.1);
  display: flex; flex-wrap: wrap; gap: 12px 24px;
  font-size: 13px; color: rgba(245,243,236,0.55);
}

/* ---------- Embrace decorative arc ---------- */
.bg-arc {
  position: absolute; pointer-events: none;
  inset: auto auto auto auto;
  opacity: 0.6;
}