/* DecentAI campaign landing - placeholder build.
   Locked brand palette (SITE-BIBLE.md, section 3): accent #6d4aff; background
   near-black #0a0a0f; text white #ffffff and muted grey #b3b3b3; lines #2d2d3a.
   No external fonts, no CDN, no trackers, no animations. */

:root {
  --purple: #6d4aff;
  --purple-bright: #8f74ff;
  --purple-soft: #b9a8ff;
  --purple-deep: #5c39ea;
  --bg: #0a0a0f;
  --surface: #12121a;
  --surface-2: #1a1a24;
  --text: #ffffff;
  --muted: #b3b3b3;
  --line: #2d2d3a;
  --radius: 14px;
  --wrap: 1100px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

.wrap { width: min(100% - 2.5rem, var(--wrap)); margin-inline: auto; }

h1, h2, h3 { line-height: 1.2; margin: 0 0 .6em; }
h2 { font-size: clamp(1.6rem, 1.2rem + 1.6vw, 2.3rem); }
h3 { font-size: 1.15rem; }
p { margin: 0 0 1rem; }

.wordmark { font-weight: 700; letter-spacing: -.01em; font-size: 1.05rem; color: var(--text); }
.tagline { color: var(--purple-soft); font-weight: 600; margin: .15rem 0 0; }

.skip-link {
  position: absolute; left: .75rem; top: -4rem; z-index: 100;
  background: var(--purple); color: #fff; padding: .6rem 1rem; border-radius: 8px;
  text-decoration: none; font-weight: 600;
}
.skip-link:focus { top: .75rem; }

/* ---------- header ---------- */

.site-header {
  position: sticky; top: 0; z-index: 10;
  background: rgba(10, 10, 15, .92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: .7rem 0; }
.site-nav { display: flex; gap: 1.2rem; flex-wrap: wrap; }
.site-nav a { color: var(--muted); text-decoration: none; font-size: .92rem; }
.site-nav a:hover { color: var(--purple-soft); }

/* ---------- hero ---------- */

.hero { padding: 4.5rem 0 3.5rem; background: linear-gradient(180deg, var(--surface) 0%, var(--bg) 100%); }
.hero-inner { max-width: 46rem; }
.eyebrow { text-transform: uppercase; letter-spacing: .12em; font-size: .72rem; color: var(--muted); margin-bottom: .8rem; }
.hero-wordmark { font-size: clamp(2.8rem, 1.8rem + 5vw, 5rem); letter-spacing: -.02em; margin-bottom: .1em; }
.hero-copy { font-size: 1.1rem; color: var(--muted); max-width: 38rem; }
.hero-copy strong { color: var(--text); }
.hero-actions { display: flex; gap: .75rem; flex-wrap: wrap; margin: 1.4rem 0 1.2rem; }

.button {
  display: inline-block; padding: .7rem 1.3rem; border-radius: 999px;
  text-decoration: none; font-weight: 600; font-size: .95rem; border: 1px solid transparent;
}
.button.primary { background: var(--purple); color: #fff; }
.button.primary:hover { background: var(--purple-deep); }
.button.ghost { border-color: var(--line); color: var(--text); }
.button.ghost:hover { border-color: var(--purple); color: var(--purple-soft); }

/* ---------- badges / placeholders ---------- */

.badge {
  display: inline-block; padding: .12rem .5rem; border-radius: 999px;
  background: var(--surface-2); color: var(--purple-soft);
  border: 1px solid var(--line);
  font-size: .68rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase;
  vertical-align: middle;
}
.ph { color: var(--purple-soft); font-weight: 600; }

.hero-note { font-size: .85rem; color: var(--muted); }

/* ---------- sections ---------- */

.section { padding: 3.5rem 0; }
.section.alt { background: var(--surface); }
.section-lede { color: var(--muted); max-width: 46rem; }
.fine { font-size: .85rem; color: var(--muted); }

.split { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; align-items: start; }
@media (max-width: 820px) { .split { grid-template-columns: 1fr; } }

.facts { margin: 1.2rem 0 0; }
.facts > div { display: grid; grid-template-columns: 11rem 1fr; gap: .5rem .9rem; padding: .45rem 0; border-top: 1px solid var(--line); }
.facts dt { color: var(--muted); font-size: .88rem; }
.facts dd { margin: 0; font-size: .92rem; overflow-wrap: anywhere; }
@media (max-width: 560px) { .facts > div { grid-template-columns: 1fr; gap: .1rem; } }

.shot { margin: 0; }
.shot img {
  width: 100%; height: auto; display: block;
  border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface-2);
}
.shot figcaption { font-size: .82rem; color: var(--muted); margin-top: .6rem; }

.callout {
  margin-top: 2rem; padding: 1.2rem 1.4rem;
  border: 1px solid var(--line); border-left: 4px solid var(--purple);
  border-radius: var(--radius); background: var(--surface);
}
.callout h3 { margin-bottom: .4rem; }
.callout p { margin: 0; }

/* ---------- features ---------- */

.feature { display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; align-items: start; padding: 2rem 0; }
.feature + .feature { border-top: 1px solid var(--line); }
.feature.reverse .feature-copy { order: 2; }
@media (max-width: 820px) {
  .feature { grid-template-columns: 1fr; }
  .feature.reverse .feature-copy { order: 0; }
}

.checks { list-style: none; padding: 0; margin: 0; }
.checks li { position: relative; padding-left: 1.4rem; margin-bottom: .5rem; font-size: .93rem; }
.checks li::before { content: ""; position: absolute; left: 0; top: .55em; width: .55rem; height: .55rem; border-radius: 50%; background: var(--purple); }

.fleet { list-style: none; padding: 0; margin: 0 0 1rem; display: grid; grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr)); gap: .35rem 1rem; }
.fleet li { position: relative; padding-left: 1.1rem; font-size: .9rem; color: var(--muted); }
.fleet li::before { content: ">"; position: absolute; left: 0; color: var(--purple-soft); font-weight: 700; }

/* ---------- tiers ---------- */

.tiers { display: grid; grid-template-columns: repeat(auto-fit, minmax(13rem, 1fr)); gap: 1rem; margin: 1.5rem 0; }
.tier { border: 1px solid var(--line); border-radius: var(--radius); padding: 1.1rem 1.2rem; background: var(--surface-2); }
.tier h3 { margin-bottom: .2rem; color: var(--purple-soft); }
.tier-spec { margin: 0 0 .5rem; font-size: .92rem; }
.tier-price { margin: 0 0 .4rem; font-size: 1.35rem; font-weight: 700; }
.tier-note { margin: 0; font-size: .84rem; color: var(--muted); }

/* ---------- waitlist ---------- */

.waitlist-action { display: flex; align-items: center; gap: .8rem; flex-wrap: wrap; margin: 1.4rem 0 1rem; }

/* ---------- footer ---------- */

.site-footer { border-top: 1px solid var(--line); background: var(--surface); padding: 2rem 0; }
.footer-inner { display: flex; justify-content: space-between; gap: 1.5rem; flex-wrap: wrap; align-items: flex-end; }
.footer-inner .fine { max-width: 32rem; margin: 0; }