/* Struct Pro AI landing page. Colours and type follow the web app (mockup p19). */
:root {
  --ground: #F4F3EE;
  --panel: #FFFFFF;
  --tint: #F1EFE8;
  --line: #DDDAD2;
  --line-soft: #E7E4DC;
  --ink: #15202B;
  --ink-2: #3E4751;
  --ink-3: #5B6570;
  --navy: #1A2430;
  --primary: #1D4E89;
  --primary-hover: #143A67;
  --primary-tint: #E8EEF7;
  --ok: #1C6B3F;
  --radius: 12px;
  --mono: 'IBM Plex Mono', ui-monospace, monospace;
  --sans: 'IBM Plex Sans', system-ui, -apple-system, 'Segoe UI', sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 88px; }
body { margin: 0; font-family: var(--sans); background: var(--ground); color: var(--ink); font-size: 16px; line-height: 1.5;
  -webkit-font-smoothing: antialiased; }
h1, h2, h3, p, ol, ul, figure { margin: 0; }
a { color: var(--primary); }
a:hover { color: var(--primary-hover); }
img { display: block; max-width: 100%; height: auto; }
.mono { font-family: var(--mono); }
.muted { color: var(--ink-3); }

/* pre-launch / live switch on <html data-mode> */
[data-mode="prelaunch"] .only-live { display: none !important; }
[data-mode="live"] .only-prelaunch { display: none !important; }

.wrap { width: 100%; max-width: 1360px; margin: 0 auto; padding: 0 40px; }

/* ---------- buttons ---------- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 10px; height: 44px; padding: 0 20px;
  border-radius: 8px; border: 1px solid var(--line); background: var(--panel); color: var(--ink); font-size: 16px;
  font-weight: 500; text-decoration: none; white-space: nowrap; transition: background .15s, border-color .15s; }
.btn:hover { color: var(--ink); background: #FAF9F6; border-color: #C9C5BA; }
.btn.lg { height: 54px; padding: 0 26px; font-size: 17px; }
.btn.primary { background: var(--primary); border-color: var(--primary); color: #fff; font-weight: 600; }
.btn.primary:hover { background: var(--primary-hover); border-color: var(--primary-hover); color: #fff; }
.btn.ghost { border-color: transparent; background: transparent; color: var(--ink-2); }
.btn.ghost:hover { background: var(--tint); }
.btn.light { background: #fff; border-color: #fff; color: var(--primary); font-weight: 600; }
.btn.light:hover { background: var(--primary-tint); color: var(--primary-hover); }
.btn.outline-light { background: transparent; border-color: rgba(255,255,255,.55); color: #fff; }
.btn.outline-light:hover { background: rgba(255,255,255,.1); border-color: #fff; color: #fff; }
.btn:focus-visible, a:focus-visible { outline: 2px solid var(--primary); outline-offset: 3px; }
.play { width: 11px; height: 13px; fill: currentColor; }

/* ---------- top bar ---------- */
.topbar { position: sticky; top: 0; z-index: 10; background: rgba(255,255,255,.96); border-bottom: 1px solid var(--line-soft);
  backdrop-filter: saturate(1.4) blur(6px); }
.topbar-in { display: flex; align-items: center; gap: 32px; height: 72px; }
.brand { display: inline-flex; align-items: center; gap: 12px; color: var(--ink); text-decoration: none; font-weight: 600;
  font-size: 21px; letter-spacing: -.01em; }
.brand:hover { color: var(--ink); }
.brand-mark { width: 28px; height: 28px; fill: none; stroke: currentColor; stroke-width: 1.8; }
.brand.small { font-size: 17px; }
.brand.small .brand-mark { width: 22px; height: 22px; }
.nav { display: flex; gap: 32px; margin: 0 auto; }
.nav a { color: var(--ink-2); text-decoration: none; font-size: 16px; }
.nav a:hover { color: var(--ink); }
.topbar-cta { display: flex; align-items: center; gap: 12px; }

/* ---------- hero ---------- */
.hero { display: grid; grid-template-columns: minmax(0, 1.22fr) minmax(0, 1fr); gap: 56px; align-items: center;
  padding-top: 64px; padding-bottom: 56px; }
.pill { display: inline-block; padding: 6px 14px; border-radius: 999px; background: var(--primary-tint); color: var(--primary);
  font-size: 15px; font-weight: 600; }
.hero h1 { margin-top: 24px; font-size: clamp(34px, 3.45vw, 54px); line-height: 1.06; font-weight: 700; letter-spacing: -.025em;
  text-wrap: balance; }
.lede { margin-top: 24px; max-width: 52ch; font-size: clamp(17px, 1.45vw, 20px); color: var(--ink-2); line-height: 1.55; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 32px; }
.fine { display: flex; align-items: center; gap: 8px; margin-top: 22px; font-size: 14px; color: var(--ink-3); }
.dot { width: 8px; height: 8px; border-radius: 50%; background: #E0A526; flex: none; box-shadow: 0 0 0 4px rgba(224,165,38,.18); }

.hero-shot figcaption { margin-top: 10px; text-align: right; font-size: 13px; color: var(--ink-3); }
.shot-frame { background: var(--navy); border-radius: 16px; padding: 14px 14px 16px; box-shadow: 0 24px 60px -24px rgba(21,32,43,.45); }
.shot-dots { display: flex; gap: 7px; padding: 2px 4px 12px; }
.shot-dots i { width: 11px; height: 11px; border-radius: 50%; background: #3A4552; }
.shot-frame img { border-radius: 8px; background: #fff; }

/* ---------- sections ---------- */
.block { padding-top: 48px; padding-bottom: 48px; }
.block-head { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 8px 24px; margin-bottom: 24px; }
h2 { font-size: clamp(26px, 2.4vw, 34px); line-height: 1.2; font-weight: 600; letter-spacing: -.015em; }
.block-head p { font-size: 15px; }

/* pricing */
.packs { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 20px; }
.pack { background: var(--panel); border: 1px solid var(--line-soft); border-radius: var(--radius); padding: 24px 24px 26px; }
.pack.featured { border-color: var(--primary); box-shadow: 0 0 0 1px var(--primary) inset; }
.pack header { display: flex; align-items: baseline; justify-content: space-between; gap: 8px; }
.pack h3 { font-size: 19px; font-weight: 600; }
.bonus { font-size: 12px; font-weight: 600; letter-spacing: .04em; text-transform: uppercase; color: var(--primary); }
.price { margin-top: 12px; font-family: var(--mono); font-size: 30px; font-weight: 600; letter-spacing: -.01em; }
.price.soon { font-size: 20px; color: var(--ink-2); padding: 7px 0; }
.pack-meta { margin-top: 8px; font-size: 15px; color: var(--ink-3); }

/* how it works */
.steps { list-style: none; padding: 0; display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); gap: 14px; counter-reset: s; }
.steps li { background: var(--panel); border: 1px solid var(--line-soft); border-radius: var(--radius); padding: 18px 16px 20px; }
.steps b { display: inline-grid; place-items: center; width: 28px; height: 28px; border-radius: 50%; background: var(--primary-tint);
  color: var(--primary); font-family: var(--mono); font-size: 14px; }
.steps h3 { margin-top: 12px; font-size: 16px; font-weight: 600; line-height: 1.3; }
.steps p { margin-top: 6px; font-size: 14px; color: var(--ink-3); line-height: 1.45; }
.note { margin-top: 20px; padding: 14px 18px; border-left: 3px solid var(--primary); background: var(--panel); border-radius: 0 8px 8px 0;
  font-size: 15px; color: var(--ink-2); }

/* split sections */
.split { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.25fr); gap: 56px; align-items: start;
  background: linear-gradient(var(--line), var(--line)) top center / calc(100% - 80px) 1px no-repeat; }
.split h2 + p { margin-top: 12px; font-size: 17px; max-width: 44ch; }
.ticks { list-style: none; padding: 0; display: grid; gap: 12px; }
.ticks li { position: relative; padding-left: 30px; font-size: 16px; color: var(--ink-2); }
.ticks li::before { content: ""; position: absolute; left: 2px; top: 5px; width: 16px; height: 16px; border-radius: 50%;
  background: var(--ok) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath d='M4.5 8.2l2.2 2.2 4.8-4.8' fill='none' stroke='%23fff' stroke-width='1.8' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") center/16px no-repeat; }
.ticks li.muted { color: var(--ink-3); font-size: 14px; }
.ticks li.muted::before { background: var(--line); }

/* early access */
.cta-band { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 24px 40px;
  background: var(--primary); color: #fff; border-radius: 16px; padding: 40px 44px; }
.cta-band p { margin-top: 10px; max-width: 56ch; color: #DCE5F1; font-size: 17px; }
.cta-actions { display: flex; flex-wrap: wrap; gap: 12px; }

/* footer */
.footer { margin-top: 40px; border-top: 1px solid var(--line); background: var(--panel); }
.footer-in { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 32px; padding-top: 28px; padding-bottom: 32px;
  font-size: 14px; color: var(--ink-2); }
.footer-links { display: flex; flex-wrap: wrap; gap: 6px 20px; margin-left: auto; }
.footer-in > .muted { flex-basis: 100%; }

/* ---------- responsive ---------- */
@media (max-width: 1180px) {
  .steps { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .packs { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 960px) {
  .nav { display: none; }
  .topbar-cta { margin-left: auto; }
  .hero { grid-template-columns: 1fr; gap: 40px; padding-top: 40px; }
  .split { grid-template-columns: 1fr; gap: 20px; }
}
@media (max-width: 640px) {
  .wrap { padding: 0 16px; }
  .topbar-in { height: 60px; gap: 12px; }
  .brand { font-size: 18px; }
  .brand-mark { width: 24px; height: 24px; }
  .topbar-cta .btn { height: 38px; padding: 0 14px; font-size: 14px; }
  .pill { font-size: 13px; }
  .hero-actions .btn { width: 100%; }
  .fine { align-items: flex-start; }
  .fine .dot { margin-top: 6px; }
  .packs, .steps { grid-template-columns: 1fr; }
  .split { background-size: calc(100% - 32px) 1px; }
  .block { padding-top: 36px; padding-bottom: 36px; }
  .cta-band { padding: 28px 22px; }
  .cta-actions, .cta-actions .btn { width: 100%; }
  .footer-links { margin-left: 0; }
}