/* Tarkstone landing page. One stylesheet for both language pages (/ and /en/).
   The colours are the brand's (brand/README.md); the font is self-hosted in
   fonts.css, which each page links before this file. */

:root {
  --navy: #111c25;
  --navy-2: #172532;
  --navy-3: #1d2e3c;
  --navy-deep: #0b1218;
  --line-dark: #2a3b49;
  --line-dark-2: #3a4d5c;
  --stone: #ece6da;
  --paper: #f6f3ec;
  --card: #fffdf8;
  --line: #ebe5d9;
  --line-2: #e3dccf;
  --ink: #1b2a36;
  --body: #4a5a67;
  --on-dark: #f0f4f8;
  --on-dark-body: #b8c4ce;
  --on-dark-muted: #8fa0ae;
  --gold: #e8b84f;
  --gold-hover: #f2c862;
  --gold-text: #8a5f12;
  --radius: 18px;
  --wrap: 1200px;
}

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

html { scroll-behavior: smooth; scroll-padding-top: 80px; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: 'Manrope', system-ui, -apple-system, 'Segoe UI', sans-serif;
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }
img, svg { display: block; }
h1, h2, h3 { margin: 0; color: inherit; }
p { margin: 0; }
ul, ol { margin: 0; padding: 0; list-style: none; }

.sprite { position: absolute; width: 0; height: 0; overflow: hidden; }
.wrap { max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }

:focus-visible { outline: 3px solid var(--gold); outline-offset: 3px; border-radius: 4px; }

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: var(--navy);
  border-bottom: 1px solid #22323f;
}
.site-header .wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 28px;
  min-height: 68px;
}

.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; }
.brand-word { font-size: 24px; font-weight: 800; letter-spacing: -0.5px; line-height: 1; }
.brand-word .tark { color: var(--gold); }
.brand-word .stone { color: var(--on-dark); }

.main-nav { display: flex; flex-wrap: wrap; gap: 4px 24px; flex: 1 1 auto; font-size: 15px; font-weight: 600; }
.main-nav a { color: var(--on-dark-body); text-decoration: none; }
.main-nav a:hover { color: var(--on-dark); }

.header-actions { display: flex; align-items: center; gap: 18px; margin-left: auto; font-size: 15px; font-weight: 600; }
.lang { display: flex; gap: 10px; }
.lang a { color: #8394a3; text-decoration: none; }
.lang a[aria-current="true"] { color: var(--on-dark); }
.lang a:hover { color: var(--on-dark); }
.header-login { color: var(--on-dark); text-decoration: none; }
.header-login:hover { color: var(--gold); }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border-radius: 12px;
  padding: 14px 24px;
  font-weight: 700;
  font-size: 17px;
  text-decoration: none;
  transition: background-color 0.15s, box-shadow 0.15s;
}
.btn-gold { background: var(--gold); color: var(--navy); }
.btn-gold:hover { background: var(--gold-hover); }
.btn-ghost { color: var(--on-dark); box-shadow: inset 0 0 0 1.5px var(--line-dark-2); }
.btn-ghost:hover { box-shadow: inset 0 0 0 1.5px var(--on-dark-body); }
.btn-sm { padding: 10px 18px; border-radius: 10px; font-size: 15px; }

/* --- section scaffolding ------------------------------------------------ */

.sec { padding: 96px 0; }
.sec-paper { background: var(--paper); }
.sec-card { background: var(--card); border-top: 1px solid var(--line); }
.sec-navy { background: var(--navy); color: var(--stone); }

.kicker { font-size: 13px; font-weight: 700; letter-spacing: 0.16em; text-transform: uppercase; color: var(--gold-text); }
.sec-navy .kicker, .hero .kicker, .cta-panel .kicker { color: var(--gold); }

.reading { max-width: 760px; }
.reading h2, .cta-panel h2 { margin-top: 12px; font-size: 40px; line-height: 1.15; font-weight: 800; letter-spacing: -1px; }
.sec-navy h2 { color: var(--on-dark); }
.intro { margin-top: 18px; color: var(--body); }
.sec-navy .intro, .sec-navy p { color: var(--on-dark-body); }

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

.hero { background: var(--navy); color: var(--stone); }
.hero-grid { display: flex; flex-wrap: wrap; gap: 56px; align-items: center; padding-top: 88px; padding-bottom: 96px; }
.hero-copy { flex: 1 1 480px; min-width: 0; }
.hero h1 { margin-top: 18px; font-size: 56px; line-height: 1.08; font-weight: 800; letter-spacing: -1.5px; color: var(--on-dark); }
.hero .lede, .hero .hero-body { margin-top: 20px; color: var(--on-dark-body); font-size: 19px; }
.hero .hero-body { margin-top: 14px; }
.cta-row { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 36px; }

.concept { flex: 1 1 460px; min-width: 0; margin: 0; }
.concept-box { background: var(--navy-2); border-radius: 20px; padding: 24px; box-shadow: inset 0 0 0 1px var(--line-dark); display: flex; flex-direction: column; gap: 14px; }
.actors { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 10px; }
.actor { background: var(--navy); border-radius: 12px; padding: 12px 14px; box-shadow: inset 0 0 0 1px var(--line-dark); }
.actor b { display: block; color: var(--on-dark); font-size: 15px; }
.actor small { display: block; color: var(--on-dark-muted); font-size: 13px; line-height: 1.4; }
.flows { display: flex; justify-content: center; flex-wrap: wrap; gap: 6px 28px; font-size: 13px; font-weight: 600; color: var(--on-dark-muted); }
.flows .in { color: var(--gold); }
.store { background: var(--stone); border-radius: 18px; padding: 18px 18px 20px; color: var(--ink); }
.store-head { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: baseline; gap: 4px 12px; }
.store-head b { font-size: 16px; font-weight: 800; }
.store-head span { font-size: 12px; color: #5a6a77; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.chip { background: var(--navy); color: var(--on-dark); border-radius: 999px; padding: 5px 12px; font-size: 13px; font-weight: 600; }
.chip-proposed { background: var(--gold); color: var(--navy); font-weight: 700; box-shadow: 0 0 0 3px rgba(232, 184, 79, 0.35); }
.store-meta { display: flex; flex-wrap: wrap; gap: 6px 16px; margin-top: 14px; font-size: 12px; color: #5a6a77; font-weight: 600; }
.gate { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; font-size: 13px; }
.gate b { color: var(--on-dark-muted); font-weight: 600; }
.gate span { color: var(--stone); border-radius: 8px; padding: 3px 10px; box-shadow: inset 0 0 0 1px var(--line-dark-2); }
.concept figcaption { margin-top: 10px; font-size: 13px; color: #8394a3; }

/* --- cards and grids ---------------------------------------------------- */

.cards-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr)); gap: 20px; margin-top: 44px; }
.card { background: var(--card); border-radius: var(--radius); padding: 28px; box-shadow: 0 1px 0 #e6e0d4, 0 0 0 1px var(--line); }
.card h3 { margin-top: 18px; font-size: 20px; font-weight: 800; line-height: 1.3; }
.card p { margin-top: 8px; color: var(--body); font-size: 16px; }
.icon-tile { width: 44px; height: 44px; border-radius: 12px; background: var(--navy); display: flex; align-items: center; justify-content: center; color: var(--gold); }

.steps { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr)); gap: 20px; margin-top: 44px; }
.steps li { padding: 28px; border-radius: var(--radius); background: var(--paper); }
.step-num { width: 40px; height: 40px; border-radius: 999px; background: var(--navy); color: var(--gold); font-weight: 800; display: flex; align-items: center; justify-content: center; }
.steps li:last-child .step-num { background: var(--gold); color: var(--navy); }
.steps h3 { margin-top: 16px; font-size: 20px; font-weight: 800; }
.steps p { margin-top: 8px; color: var(--body); font-size: 16px; }

.apps-intro { margin-top: 72px; max-width: 760px; }
.apps-intro h3 { font-size: 26px; font-weight: 800; letter-spacing: -0.5px; }
.apps-intro p { margin-top: 10px; color: var(--body); }
.app-list { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 240px), 1fr)); gap: 16px; margin-top: 28px; }
.app-list li { padding: 24px; border-radius: 16px; box-shadow: inset 0 0 0 1px var(--line-2); }
.app-list b { display: block; font-size: 18px; font-weight: 800; }
.app-list span { display: block; margin-top: 6px; color: var(--body); font-size: 15px; }

.chain { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin-top: 40px; font-weight: 700; font-size: 16px; }
.chain li { padding: 10px 18px; border-radius: 999px; background: var(--navy-3); color: var(--on-dark); }
.chain li.key { background: var(--gold); color: var(--navy); }
.chain li.sep { padding: 0; background: none; color: #5d7080; }
.chain li.loop { padding: 0; background: none; color: var(--gold); font-size: 22px; }
.life-tail { margin-top: 32px; max-width: 760px; }

.gov { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 420px), 1fr)); gap: 20px; margin-top: 44px; }
.gov li { background: var(--card); border-radius: var(--radius); padding: 28px; box-shadow: 0 0 0 1px var(--line); }
.gov h3 { font-size: 20px; font-weight: 800; }
.gov p { margin-top: 8px; color: var(--body); font-size: 16px; }

.facts-block { margin-top: 88px; }
.facts { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr)); gap: 20px; margin-top: 20px; }
.facts li { border-top: 3px solid var(--navy); padding-top: 18px; }
.facts li:last-child { border-top-color: var(--gold); }
.facts h3 { font-size: 20px; font-weight: 800; }
.facts p { margin-top: 6px; color: var(--body); font-size: 16px; }

/* --- contact ------------------------------------------------------------ */

.contact { background: var(--paper); padding: 0 0 96px; }
.cta-panel { background: var(--navy); border-radius: 28px; padding: 64px 48px; display: flex; flex-wrap: wrap; gap: 40px; align-items: center; }
.cta-copy { flex: 1 1 520px; min-width: 0; }
.cta-panel h2 { color: var(--on-dark); font-size: 38px; }
.cta-copy p { margin-top: 16px; color: var(--on-dark-body); }
.cta-copy p.small { margin-top: 10px; color: var(--on-dark-muted); font-size: 15px; }
.cta-side { display: flex; flex-direction: column; align-items: flex-start; gap: 14px; }
.cta-side .btn { font-size: 18px; padding: 16px 28px; font-weight: 800; }
.cta-side a.mail { color: var(--on-dark-body); font-size: 15px; }

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

.site-footer { background: var(--navy-deep); color: #8394a3; font-size: 14px; }
.site-footer .wrap { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px; padding-top: 28px; padding-bottom: 28px; }
.footer-left { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; }
.site-footer a { color: var(--on-dark-body); }

/* --- narrow screens ----------------------------------------------------- */

@media (max-width: 960px) {
  .main-nav { display: none; }
  .hero h1 { font-size: 44px; }
}

@media (max-width: 640px) {
  body { font-size: 16px; }
  .site-header .wrap { min-height: 60px; gap: 10px 16px; }
  .header-cta { display: none; }
  .header-actions { gap: 14px; }
  .sec { padding: 64px 0; }
  .hero-grid { padding-top: 56px; padding-bottom: 64px; gap: 40px; }
  .hero h1 { font-size: 34px; letter-spacing: -1px; }
  .hero .lede, .hero .hero-body { font-size: 17px; }
  .reading h2, .cta-panel h2 { font-size: 30px; }
  .actors { grid-template-columns: minmax(0, 1fr); }
  .cta-panel { padding: 40px 24px; border-radius: 22px; }
  .contact { padding-bottom: 64px; }
}