/* SDI Studio — site styles.
   Tokens are taken from the app itself (goal-generator-agent/public/styles.css)
   so the site and the product feel like one thing. Navy + gold come from the
   SDI Studio mark. No third-party fonts or scripts: a privacy-first product's
   site should not quietly hand visitor data to anyone. */

:root {
  /* app tokens */
  --bg: #f4f6f8;
  --paper: #ffffff;
  --ink: #1c2530;
  --ink-muted: #55606b;
  --ink-faint: #8993a0;
  --border: #dde3e8;
  --primary: #2b5f74;
  --primary-dark: #1f4a5c;
  --primary-tint: #e9f1f3;
  --radius: 10px;
  --shadow: 0 1px 2px rgba(28, 37, 48, 0.06), 0 4px 16px rgba(28, 37, 48, 0.05);
  /* from the mark */
  --navy: #14263e;
  --gold: #c9a24b;
  --gold-tint: #faf4e6;
  --teal: #2a9d8f;
  --on-primary: #ffffff;
  --error: #a83232;
  --success: #1d6b47;
  --wrap: 1120px;
  --narrow: 720px;
  font-family: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111922;
    --paper: #17212c;
    --ink: #e7ecf0;
    --ink-muted: #a9b5c0;
    --ink-faint: #7f8b97;
    --border: #2a3744;
    --primary: #6fb3cc;
    --primary-dark: #93c8dc;
    --primary-tint: #1a3441;
    --navy: #0c1826;
    --gold-tint: #2b2415;
    --on-primary: #0c1a21;
    --error: #ef8a8a;
    --success: #7fd3a4;
    --shadow: 0 1px 2px rgba(0,0,0,.3), 0 4px 16px rgba(0,0,0,.25);
  }
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
section[id] { scroll-margin-top: 76px; }
body { margin: 0; background: var(--paper); color: var(--ink); font-size: 17px; line-height: 1.6; -webkit-font-smoothing: antialiased; }
h1, h2, h3 { font-weight: 650; letter-spacing: -0.01em; line-height: 1.2; margin: 0 0 .5em; }
h1 { font-size: clamp(2rem, 4.4vw, 3.1rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(1.55rem, 3vw, 2.15rem); }
h3 { font-size: 1.1rem; }
p { margin: 0 0 1em; }
a { color: var(--primary); }
img { max-width: 100%; display: block; }

.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }
.narrow { max-width: var(--narrow); }
.center { text-align: center; margin-left: auto; margin-right: auto; }
.muted { color: var(--ink-muted); }
.skip { position: absolute; left: -999px; top: 8px; background: var(--paper); padding: 8px 12px; border-radius: 6px; z-index: 20; }
.skip:focus { left: 8px; }

/* Announcement bar */
.announce { background: var(--navy); color: #e8eef3; font-size: .9rem; text-align: center; padding: 8px 16px; }
.announce a { color: #fff; font-weight: 600; text-decoration: none; }
.announce a:hover { text-decoration: underline; }

/* Header */
.site-header { position: sticky; top: 0; z-index: 10; background: color-mix(in srgb, var(--paper) 90%, transparent); backdrop-filter: saturate(160%) blur(8px); border-bottom: 1px solid var(--border); }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 66px; gap: 16px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); font-weight: 650; font-size: 1.08rem; white-space: nowrap; }
.brand img { width: 34px; height: 34px; }
.nav { display: flex; align-items: center; gap: 24px; }
.nav a { color: var(--ink-muted); text-decoration: none; font-size: .95rem; }
.nav a:hover, .nav a[aria-current="page"] { color: var(--ink); }
.nav a.btn { color: var(--on-primary); }

/* Buttons */
.btn { display: inline-block; background: var(--primary); color: var(--on-primary); text-decoration: none; font-weight: 600; font-size: 1rem; font-family: inherit; padding: 12px 22px; border-radius: var(--radius); border: 2px solid var(--primary); cursor: pointer; transition: background .15s, border-color .15s; }
.btn:hover { background: var(--primary-dark); border-color: var(--primary-dark); }
.btn-small { padding: 8px 14px; font-size: .92rem; white-space: nowrap; }
.btn-ghost { background: transparent; color: var(--primary); }
.btn-ghost:hover { background: var(--primary-tint); color: var(--primary-dark); }
.label-short { display: none; }

/* Hero — split */
.hero { background: var(--bg); padding: 72px 0 64px; border-bottom: 1px solid var(--border); }
.hero-grid { display: grid; grid-template-columns: 1.05fr 1fr; gap: 56px; align-items: center; }
.eyebrow { font-size: .98rem; font-weight: 600; color: var(--primary); margin-bottom: 12px; }
.lede { font-size: 1.18rem; color: var(--ink-muted); }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 28px; }

/* Screenshot frames — placeholders until the real screenshots exist */
.shot { background: var(--paper); border: 1px solid var(--border); border-radius: 14px; box-shadow: var(--shadow); overflow: hidden; }
.shot-bar { display: flex; gap: 6px; padding: 10px 14px; border-bottom: 1px solid var(--border); background: var(--bg); }
.shot-bar span { width: 9px; height: 9px; border-radius: 50%; background: var(--border); }
.shot-body { padding: 20px; }
.shot-line { height: 9px; border-radius: 5px; background: var(--border); margin-bottom: 9px; }
.shot-cite { margin-top: 16px; border: 1px solid color-mix(in srgb, var(--gold) 55%, transparent); background: var(--gold-tint); border-radius: 10px; padding: 14px 16px; }
.shot-cite strong { display: block; font-size: .85rem; color: var(--ink); margin-bottom: 8px; }
/* Concept graphics (feature rows): the idea drawn simply, with real content as text. */
.concept { margin: 0; background: var(--paper); border: 1px solid var(--border); border-radius: 16px; box-shadow: var(--shadow); padding: 28px 28px 24px; }
.concept-kicker { display: block; font-size: .78rem; font-weight: 600; letter-spacing: .06em; text-transform: uppercase; color: var(--teal); margin-bottom: 6px; }
.concept-rule { border-left: 3px solid var(--gold); padding: 2px 0 2px 16px; margin-bottom: 26px; }
.concept-rule p { margin: 0 0 4px; font-size: 1.12rem; line-height: 1.45; color: var(--ink); font-weight: 500; }
.concept-rule cite { font-style: normal; font-size: .88rem; color: var(--ink-muted); }
.ladder { list-style: none; margin: 0; padding: 0; display: grid; gap: 14px; counter-reset: none; }
.rung { display: grid; grid-template-columns: 64px 1fr; gap: 16px; align-items: end; }
.rung::before, .rung::after { content: none; }
.rung-bar { display: grid; place-items: center; width: 44px; height: calc(14px + var(--n) * 12px); border-radius: 8px 8px 4px 4px; background: color-mix(in srgb, var(--teal) 55%, var(--paper)); justify-self: center; }
.rung:nth-child(2) .rung-bar { background: color-mix(in srgb, var(--teal) 75%, var(--paper)); }
.rung:nth-child(3) .rung-bar { background: var(--teal); }
.rung-goal .rung-bar { width: 44px; height: 44px; border-radius: 50%; background: var(--gold); color: var(--navy); }
.rung-goal .rung-bar svg { display: block; width: 26px; height: 26px; margin: auto; }
.rung strong { display: block; font-size: .95rem; color: var(--ink); }
.rung span { display: block; font-size: .98rem; color: var(--ink-muted); line-height: 1.4; }
.rung em { display: block; font-style: normal; font-size: .86rem; color: var(--teal); font-weight: 600; margin-top: 2px; }
.concept-example { margin-top: 24px; padding-top: 18px; border-top: 1px solid var(--border); }
.concept-example p { margin: 0; font-size: .95rem; line-height: 1.55; color: var(--ink); }
.moves { list-style: none; margin: 0; padding: 0; display: grid; gap: 22px; }
.move { display: grid; grid-template-columns: 44px 1fr; gap: 16px; align-items: start; }
.move-icon { display: grid; place-items: center; width: 44px; height: 44px; border-radius: 12px; background: color-mix(in srgb, var(--teal) 16%, var(--paper)); color: var(--teal); }
.move-icon svg { display: block; width: 22px; height: 22px; }
.move strong { display: block; font-size: 1rem; color: var(--ink); margin: 2px 0 6px; }
.move p { margin: 0; font-size: .95rem; line-height: 1.5; color: var(--ink-muted); }
.edit-line del { color: var(--ink-faint); text-decoration-thickness: 1.5px; }
.edit-line ins { text-decoration: none; background: var(--gold-tint); color: var(--ink); border-radius: 4px; padding: 0 4px; }
.note-line { font-style: italic; border-left: 3px solid var(--gold); padding-left: 12px; }
.kept { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; border: 1px solid var(--border); border-radius: 10px; padding: 10px 12px; font-size: .9rem; color: var(--ink-muted); background: var(--bg); }
.kept em { font-style: normal; color: var(--teal); font-weight: 600; }
.kept-btn { font-weight: 600; color: var(--ink); border: 1px solid var(--border); background: var(--paper); border-radius: 8px; padding: 4px 10px; font-size: .85rem; }
.hero-photo { margin: 0; }
.hero-photo img { display: block; width: 100%; height: auto; aspect-ratio: 4 / 3; object-fit: cover; border-radius: 16px; box-shadow: var(--shadow); }
.photo-credit { margin-top: 8px; font-size: .75rem; color: var(--ink-faint); text-align: right; }
.photo-credit a { color: inherit; }
.concept-hero { padding: 24px; }
.io p { margin: 0; line-height: 1.5; }
.io-in p { font-size: 1.02rem; color: var(--ink); font-style: italic; }
.io-arrow { display: grid; place-items: center; color: var(--teal); padding: 10px 0; }
.io-arrow svg { width: 26px; height: 26px; display: block; }
.io-out { background: var(--bg); border: 1px solid var(--border); border-radius: 12px; padding: 16px 18px; }
.goal-parts { font-size: 1rem; color: var(--ink); }
.goal-parts mark { background: none; color: inherit; padding: 0 1px; border-bottom: 3px solid; }
.goal-parts mark.p-cond { border-bottom-color: var(--primary); } .goal-parts mark.p-skill { border-bottom-color: var(--teal); } .goal-parts mark.p-target { border-bottom-color: var(--gold); } .goal-parts mark.p-meas { border-bottom-color: #8aa4c8; }
.parts-key { list-style: none; margin: 14px 0 0; padding: 0; display: flex; flex-wrap: wrap; gap: 6px 16px; font-size: .82rem; color: var(--ink-muted); }
.parts-key li { display: flex; align-items: center; gap: 6px; }
.parts-key i { display: inline-block; width: 14px; height: 4px; border-radius: 2px; background: currentColor; }
.parts-key i.p-cond { background: var(--primary); } .parts-key i.p-skill { background: var(--teal); } .parts-key i.p-target { background: var(--gold); } .parts-key i.p-meas { background: #8aa4c8; }
.cite-chip { margin-top: 14px; display: inline-flex; align-items: center; gap: 8px; font-size: .85rem; color: var(--ink); background: var(--gold-tint); border: 1px solid color-mix(in srgb, var(--gold) 55%, transparent); border-radius: 999px; padding: 4px 12px; }
.cite-chip span { font-weight: 600; color: var(--ink-muted); }
.basis { list-style: none; margin: 0; padding: 0; display: grid; gap: 22px; }
.decision { display: flex; align-items: center; gap: 10px; margin: 0 0 10px; font-weight: 600; color: var(--ink); font-size: 1rem; }
.decision-mark { display: grid; place-items: center; flex: none; width: 26px; height: 26px; border-radius: 50%; background: var(--teal); color: #fff; }
.decision-mark svg { display: block; width: 16px; height: 16px; }
.rule-quote { margin: 0 0 0 12px; padding: 12px 14px; border-left: 3px solid var(--gold); background: var(--gold-tint); border-radius: 0 10px 10px 0; }
.rule-quote p { margin: 0 0 6px; font-size: .95rem; line-height: 1.5; color: var(--ink); font-style: italic; }
.rule-quote cite { font-style: normal; font-size: .85rem; font-weight: 600; color: var(--ink-muted); }
.basis-foot { margin: 18px 0 0; font-size: .88rem; color: var(--ink-muted); }
.shot-img img { display: block; width: 100%; height: auto; }
.shot-note { font-size: .78rem; color: var(--ink-faint); text-align: center; padding: 10px; border-top: 1px dashed var(--border); }

/* Facts strip */
.facts { border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); background: var(--paper); }
.facts ul { list-style: none; margin: 0; padding: 22px 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }
.facts li { display: flex; gap: 10px; align-items: flex-start; font-size: .95rem; color: var(--ink-muted); }
.facts li::before { content: ""; flex: 0 0 8px; height: 8px; margin-top: 8px; border-radius: 50%; background: var(--gold); }

/* Sections */
.section { padding: 84px 0; }
.section-alt { background: var(--bg); }
.section-lede { font-size: 1.13rem; color: var(--ink-muted); max-width: 660px; }
.big-quote { font-size: 1.28rem; line-height: 1.55; color: var(--ink); }

/* Steps */
.steps { list-style: none; counter-reset: step; padding: 0; margin: 36px 0 0; display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px; }
.steps li { counter-increment: step; border-top: 2px solid var(--primary); padding-top: 18px; }
.steps li::before { content: "Step " counter(step); display: block; font-size: .9rem; font-weight: 600; color: var(--primary); margin-bottom: 8px; }
.steps p { color: var(--ink-muted); margin: 0; }

/* Feature rows — alternating */
.feature { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; padding: 36px 0; }
.feature + .feature { border-top: 1px solid var(--border); }
.feature.flip .feature-text { order: 2; }
.feature-text p { color: var(--ink-muted); }

/* Video */
.video-slot { aspect-ratio: 16 / 9; max-width: 900px; margin: 32px auto 0; border-radius: 14px; background: var(--navy); color: #cfd9e1; display: grid; place-items: center; text-align: center; }
.demo-video { display: block; width: 100%; max-width: 900px; aspect-ratio: 16 / 9; margin: 32px auto 0; border-radius: 14px; background: #f4f6f8; box-shadow: 0 1px 3px rgba(20,38,62,.12), 0 8px 24px rgba(20,38,62,.08); }
.play { width: 64px; height: 64px; border-radius: 50%; border: 2px solid var(--gold); display: grid; place-items: center; margin: 0 auto 12px; }
.play::after { content: ""; border-left: 18px solid var(--gold); border-top: 11px solid transparent; border-bottom: 11px solid transparent; margin-left: 5px; }

/* Privacy — path diagram */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.path { background: var(--paper); border: 1px solid var(--border); border-radius: 14px; padding: 28px; }
.path-row { display: flex; align-items: center; gap: 12px; }
.node { flex: 1; text-align: center; border-radius: 10px; padding: 16px 10px; font-weight: 600; font-size: .95rem; background: var(--primary-tint); border: 1px solid color-mix(in srgb, var(--primary) 30%, transparent); }
.node small { display: block; font-weight: 400; color: var(--ink-muted); font-size: .8rem; margin-top: 2px; }
.arrow { flex: 0 0 34px; height: 2px; background: var(--primary); position: relative; }
.arrow::after { content: ""; position: absolute; right: -1px; top: -5px; border-left: 8px solid var(--primary); border-top: 6px solid transparent; border-bottom: 6px solid transparent; }
.node-us { margin-top: 18px; background: transparent; border: 2px dashed var(--border); color: var(--ink-faint); }
.node-us s { text-decoration-thickness: 1px; }
.link { font-weight: 600; text-decoration: none; }
.link:hover { text-decoration: underline; }

/* Foundation */
.foundation-head { display: flex; gap: 22px; align-items: center; margin-bottom: 36px; }
.foundation-head img { width: 84px; height: 84px; flex: 0 0 84px; }
.foundation-head p { margin: 0; }
.modules { display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; }
.module { background: var(--paper); border: 1px solid var(--border); border-radius: 14px; padding: 18px; }
.module img { width: 42px; height: 42px; margin-bottom: 12px; }
.module h3 { font-size: .98rem; margin-bottom: 8px; }
.status { display: inline-block; font-size: .72rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; padding: 3px 8px; border-radius: 999px; background: var(--bg); color: var(--ink-muted); border: 1px solid var(--border); }
.status-beta { background: var(--gold-tint); color: #7a5b12; border-color: color-mix(in srgb, var(--gold) 50%, transparent); }
@media (prefers-color-scheme: dark) { .status-beta { color: var(--gold); } }
.module-planned img { opacity: .6; }

/* Two doors */
.doors { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.door { display: block; text-decoration: none; color: var(--ink); background: var(--paper); border: 1px solid var(--border); border-radius: 14px; padding: 32px; transition: border-color .15s; }
.door:hover { border-color: var(--primary); }
.door p { color: var(--ink-muted); }
.door .link { color: var(--primary); }

/* FAQ */
.faq { max-width: 800px; margin-top: 24px; }
.faq details { border-bottom: 1px solid var(--border); padding: 18px 0; }
.faq summary { cursor: pointer; font-weight: 600; font-size: 1.05rem; list-style: none; display: flex; justify-content: space-between; gap: 16px; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--primary); font-size: 1.3rem; line-height: 1; }
.faq details[open] summary::after { content: "–"; }
.faq details p { color: var(--ink-muted); margin: 12px 0 0; }

/* Early access / forms */
.section-cta { background: var(--navy); color: #e8eef3; }
.section-cta h2 { color: #fff; }
.section-cta .muted { color: #b8c5d0; }
.form { background: var(--paper); color: var(--ink); border-radius: 16px; padding: 28px; margin-top: 24px; display: grid; gap: 16px; box-shadow: var(--shadow); }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field { display: grid; gap: 6px; }
.field label { font-weight: 600; font-size: .92rem; }
.field input, .field select, .field textarea { font: inherit; font-size: 1rem; padding: 11px 12px; border-radius: 8px; border: 1px solid var(--border); background: var(--bg); color: var(--ink); width: 100%; }
.field textarea { min-height: 110px; resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus { outline: 3px solid color-mix(in srgb, var(--primary) 35%, transparent); border-color: var(--primary); }
.field [aria-invalid="true"] { border-color: var(--error); }
.form .btn { justify-self: start; }
.form-note { font-size: .86rem; color: var(--ink-muted); margin: 0; }
.form-status { margin: 0; font-weight: 600; min-height: 1.2em; }
.form-status.is-error { color: var(--error); }
.form-status.is-success { color: var(--success); }
.form .btn[disabled] { opacity: .65; cursor: progress; }
.form-note a { color: var(--primary); }
/* Spam trap (see functions/_lib/submit.js): off-screen, out of the tab order
   and hidden from screen readers, so only a bot fills it in. */
.hp { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); clip-path: inset(50%); white-space: nowrap; }

/* Inner pages */
.page-head { background: var(--bg); padding: 64px 0 36px; border-bottom: 1px solid var(--border); }
.prose h2 { margin-top: 1.6em; font-size: 1.45rem; }
.prose p, .prose li { color: var(--ink-muted); }
.prose strong { color: var(--ink); }
.prose ul { padding-left: 1.2em; }
.callout { background: var(--gold-tint); border: 1px solid color-mix(in srgb, var(--gold) 45%, transparent); border-radius: 12px; padding: 18px 20px; margin: 24px 0; }
.callout p:last-child { margin: 0; }

/* Footer */
.site-footer { background: var(--navy); color: #b8c5d0; padding: 48px 0 28px; font-size: .93rem; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1fr; gap: 28px; }
.footer-grid h4 { color: #fff; font-size: .82rem; letter-spacing: .08em; text-transform: uppercase; margin: 0 0 12px; }
.footer-grid a { display: block; color: #b8c5d0; text-decoration: none; margin-bottom: 8px; }
.footer-grid a:hover { color: #fff; }
.footer-brand { display: flex; align-items: center; gap: 10px; color: #fff; font-weight: 650; margin-bottom: 10px; }
.footer-brand img { width: 30px; height: 30px; }
.footer-base { border-top: 1px solid rgba(255,255,255,.12); margin-top: 32px; padding-top: 18px; font-size: .84rem; }

/* Responsive */
@media (max-width: 900px) {
  .nav a:not(.btn) { display: none; }
  .hero-grid, .feature, .split, .doors, .form-row { grid-template-columns: 1fr; gap: 32px; }
  .feature.flip .feature-text { order: 0; }
  .steps { grid-template-columns: 1fr; }
  .facts ul { grid-template-columns: 1fr 1fr; }
  .modules { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .section { padding: 60px 0; }
  .hero { padding: 48px 0 44px; }
  body { font-size: 16px; }
}
@media (max-width: 480px) {
  .wrap { padding: 0 16px; }
  .label-long { display: none; }
  .label-short { display: inline; }
  .facts ul { grid-template-columns: 1fr; }
  .modules { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .form { padding: 20px; }
  .foundation-head { flex-direction: column; align-items: flex-start; }
  .path-row { flex-direction: column; }
  .arrow { width: 2px; height: 26px; flex: 0 0 26px; }
  .arrow::after { right: -5px; top: auto; bottom: -1px; border-left: 6px solid transparent; border-right: 6px solid transparent; border-top: 8px solid var(--primary); border-bottom: 0; }
}

/* Legal pages */
.legal table { width: 100%; border-collapse: collapse; margin: 16px 0 24px; font-size: .95rem; }
.legal th, .legal td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--border); vertical-align: top; }
.legal th { color: var(--ink); background: var(--bg); }
.legal td { color: var(--ink-muted); }
.legal h2:first-child { margin-top: 0; }