/* Callisto Bound — colours from Ursa Notes: Ursa Day (light) and Ursa Night (dark). */
:root {
  --background: #F7F8FC;
  --surface: #FFFFFF;
  --panel: #E9ECF6;
  --text: #1B2440;
  --muted: #4A557A;
  --accent: #2B4BA8;
  --secondary: #4F6BD8;
  --gold: #F2C14E;
  --rule: #DCE3F5;
  --shadow: 0 1px 2px rgba(27, 36, 64, 0.06), 0 12px 32px rgba(27, 36, 64, 0.08);
  /* The night sky behind the hero and the contact band, in both modes. */
  --sky-top: #0B1230;
  --sky-bottom: #1B2A63;
  --sky-text: #F3EFE0;
  --sky-muted: #B8C2E6;
}

@media (prefers-color-scheme: dark) {
  :root {
    --background: #1D1E1F;
    --surface: #242527;
    --panel: #2C2D2F;
    --text: #F3EFE0;
    --muted: #B9B4A6;
    --accent: #F2C14E;
    --secondary: #7C9CFF;
    --rule: #34363A;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.3), 0 12px 32px rgba(0, 0, 0, 0.35);
    --sky-top: #0A0D1C;
    --sky-bottom: #17204A;
  }
}

* { box-sizing: border-box; }

html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--background);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--secondary); }
a:hover { color: var(--accent); }

.wrap { width: 100%; max-width: 1080px; margin: 0 auto; padding: 0 16px; }

/* Header */

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: color-mix(in srgb, var(--background) 82%, transparent);
  backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid var(--rule);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  text-decoration: none;
  font-weight: 700;
  letter-spacing: -0.01em;
  font-size: 1.05rem;
}
.brand:hover { color: var(--text); }
.brand svg { width: 28px; height: 28px; }

.site-nav { display: flex; gap: 24px; }
.site-nav a { color: var(--muted); text-decoration: none; font-size: 0.95rem; font-weight: 500; }
.site-nav a:hover { color: var(--text); }

@media (max-width: 520px) { .site-nav { gap: 16px; } .site-nav a { font-size: 0.9rem; } }

/* Hero */

.hero {
  position: relative;
  overflow: hidden;
  color: var(--sky-text);
  background:
    radial-gradient(1.5px 1.5px at 12% 22%, #fff 50%, transparent 51%),
    radial-gradient(1px 1px at 27% 68%, #fff 50%, transparent 51%),
    radial-gradient(1.5px 1.5px at 41% 14%, #fff 50%, transparent 51%),
    radial-gradient(1px 1px at 58% 41%, #fff 50%, transparent 51%),
    radial-gradient(2px 2px at 72% 18%, #F2C14E 50%, transparent 51%),
    radial-gradient(1px 1px at 83% 63%, #fff 50%, transparent 51%),
    radial-gradient(1.5px 1.5px at 91% 31%, #fff 50%, transparent 51%),
    radial-gradient(1px 1px at 6% 78%, #fff 50%, transparent 51%),
    radial-gradient(1px 1px at 66% 84%, #fff 50%, transparent 51%),
    radial-gradient(1200px 500px at 80% -10%, rgba(124, 156, 255, 0.35), transparent 60%),
    radial-gradient(900px 500px at 0% 110%, rgba(242, 193, 78, 0.18), transparent 60%),
    linear-gradient(180deg, var(--sky-top), var(--sky-bottom));
}

.hero .wrap { padding-top: clamp(64px, 12vh, 140px); padding-bottom: clamp(64px, 12vh, 140px); }

.eyebrow {
  display: inline-block;
  margin-bottom: 20px;
  padding: 6px 14px;
  border: 1px solid rgba(243, 239, 224, 0.22);
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--sky-muted);
}

.hero h1 {
  max-width: 14ch;
  margin: 0 0 20px;
  font-size: clamp(2.6rem, 7vw, 4.6rem);
  line-height: 1.04;
  letter-spacing: -0.035em;
  font-weight: 800;
}

.hero h1 .glow {
  background: linear-gradient(90deg, #F2C14E, #FFE3A3 45%, #7C9CFF);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  /* The clipped background only paints inside the box; give glyph overhangs
     (the tail of the last letter) room without moving the next character. */
  padding-right: 0.1em;
  margin-right: -0.1em;
  -webkit-box-decoration-break: clone;
  box-decoration-break: clone;
}

.hero .lede {
  max-width: 560px;
  margin: 0 0 36px;
  font-size: clamp(1.1rem, 2.2vw, 1.3rem);
  color: var(--sky-muted);
}

.actions { display: flex; flex-wrap: wrap; gap: 12px; }

.button {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 22px;
  border-radius: 12px;
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}
.button:hover { transform: translateY(-1px); }

.button.primary { background: #F2C14E; color: #1B2440; box-shadow: 0 8px 24px rgba(242, 193, 78, 0.3); }
.button.primary:hover { color: #1B2440; box-shadow: 0 10px 28px rgba(242, 193, 78, 0.4); }

.button.ghost { color: var(--sky-text); border: 1px solid rgba(243, 239, 224, 0.3); }
.button.ghost:hover { color: var(--sky-text); background: rgba(243, 239, 224, 0.08); }

/* Sections */

.section { padding: clamp(64px, 10vh, 112px) 0; }
.section + .section { padding-top: 0; }

.section-head { max-width: 640px; margin-bottom: 40px; }
.section-head .kicker {
  margin: 0 0 8px;
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.section-head h2 {
  margin: 0 0 12px;
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  line-height: 1.12;
  letter-spacing: -0.025em;
}
.section-head p { margin: 0; color: var(--muted); font-size: 1.1rem; }

/* App card */

.apps { display: grid; grid-template-columns: 2fr 1fr; gap: 20px; }
@media (max-width: 820px) { .apps { grid-template-columns: 1fr; } }

.card {
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: 22px;
  box-shadow: var(--shadow);
}

.app-card { padding: 32px; display: grid; grid-template-columns: auto 1fr; gap: 24px; align-items: start; }
@media (max-width: 520px) { .app-card { grid-template-columns: 1fr; padding: 24px; } }

.app-card img { width: 112px; height: 112px; border-radius: 26px; box-shadow: 0 10px 30px rgba(11, 18, 48, 0.35); }

.app-card h3 { margin: 0 0 4px; font-size: 1.6rem; letter-spacing: -0.02em; }
.app-card .platforms { margin: 0 0 14px; color: var(--muted); font-size: 0.95rem; }
.app-card p.desc { margin: 0 0 18px; }

.pill {
  display: inline-block;
  margin-left: 8px;
  padding: 3px 10px;
  border-radius: 999px;
  background: var(--panel);
  color: var(--accent);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  vertical-align: middle;
}

.chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 0; padding: 0; list-style: none; }
.chips li {
  padding: 6px 12px;
  border-radius: 10px;
  background: var(--panel);
  font-size: 0.88rem;
  color: var(--text);
}

.next-card {
  padding: 32px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  border-style: dashed;
  box-shadow: none;
  background: transparent;
}
.next-card h3 { margin: 0 0 8px; font-size: 1.2rem; }
.next-card p { margin: 0; color: var(--muted); }

/* Principles */

.principles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
@media (max-width: 820px) { .principles { grid-template-columns: 1fr; } }

.principle { padding: 28px; }
.principle .icon {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  margin-bottom: 16px;
  border-radius: 12px;
  background: var(--panel);
  color: var(--accent);
}
.principle .icon svg { width: 22px; height: 22px; }
.principle h3 { margin: 0 0 6px; font-size: 1.15rem; }
.principle p { margin: 0; color: var(--muted); }

/* Contact band */

.band {
  border-radius: 28px;
  padding: clamp(36px, 6vw, 64px);
  color: var(--sky-text);
  background:
    radial-gradient(700px 300px at 100% 0%, rgba(124, 156, 255, 0.35), transparent 60%),
    linear-gradient(135deg, var(--sky-top), var(--sky-bottom));
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  align-items: center;
  justify-content: space-between;
}
.band h2 { margin: 0 0 6px; font-size: clamp(1.6rem, 3.5vw, 2.2rem); letter-spacing: -0.02em; }
.band p { margin: 0; color: var(--sky-muted); }

/* Text pages (privacy, terms, support) */

.legal { flex: 1; width: 100%; max-width: 720px; margin: 0 auto; padding: 56px 16px 72px; }
.legal h1 { margin: 0 0 4px; font-size: clamp(2rem, 5vw, 2.6rem); line-height: 1.15; letter-spacing: -0.025em; }
.legal h2 { margin-top: 2em; font-size: 1.2rem; }
.legal .updated { margin-top: 0; color: var(--muted); }

/* Footer */

.site-footer { margin-top: auto; border-top: 1px solid var(--rule); color: var(--muted); font-size: 0.9rem; }
.site-footer .wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  align-items: center;
  justify-content: space-between;
  padding-top: 28px;
  padding-bottom: 28px;
}
.site-footer nav { display: flex; flex-wrap: wrap; gap: 20px; }
.site-footer nav a { color: var(--muted); text-decoration: none; }
.site-footer nav a:hover { color: var(--text); }