/* Social Universe public site: "Cosmos" design system (docs/SOCIAL-UNIVERSE-SPEC.md, owner decision 5).
   Deep-space ground, the brand gradient as primary accent, UC gold only on Universe Credit surfaces.
   Dark by default; [data-theme="light"] keeps a light theme. Fonts: /fonts/fonts.css (self-hosted). */
:root, :root[data-theme="dark"] {
  --bg: #060914;
  --surface: #0D1326;
  --surface-2: #121A33;
  --line: rgba(148, 163, 255, .18);
  --line-strong: rgba(148, 163, 255, .32);
  --ink: #E9ECF8;
  --ink-2: #C9D0EE;
  --muted: #A9B1D6;
  --muted-2: #8F98C2;
  --link: #5EE6D0;
  --link-hover: #9FF3E6;
  --cyan: #5EE6D0;
  --violet: #9B8CFF;
  --gold: #F2B544;
  --coral: #FF8A6E;
  --blue: #8FB4FF;
  --star: #C9D2FF;
  --focus: #5EE6D0;
  --danger: #FF8A80;
  --live-bg: rgba(94, 230, 208, .14);
  --live-ink: #9FF3E6;
  --coming-bg: rgba(155, 140, 255, .16);
  --coming-ink: #C9C0FF;
  --inc-bg: rgba(94, 230, 208, .12);
  --inc-ink: #9FF3E6;
  --exc-bg: rgba(255, 138, 128, .14);
  --exc-ink: #FFB4AC;
  --grad: linear-gradient(90deg, #19E3C0 0%, #1E7BFF 30%, #8A3CFF 55%, #FF2FA8 80%, #FF5A3C 100%);
  --grad-cta: linear-gradient(90deg, #1462E0 0%, #7029E6 55%, #C81E7C 100%);
  --display: "Sora", "IBM Plex Sans", system-ui, sans-serif;
  --sans: "IBM Plex Sans", system-ui, -apple-system, "Segoe UI", sans-serif;
  --mono: "JetBrains Mono", ui-monospace, Consolas, monospace;
  color-scheme: dark;
}
:root[data-theme="light"] {
  --bg: #F3F5FB;
  --surface: #FFFFFF;
  --surface-2: #EDF1FA;
  --line: #DDE3F1;
  --line-strong: #C3CCE3;
  --ink: #0B1020;
  --ink-2: #2A3150;
  --muted: #4E5778;
  --muted-2: #4E5778;
  --link: #1450C4;
  --link-hover: #0F3E99;
  --cyan: #0A7366;   /* 5.3:1 on the light page background */
  --violet: #5B3FD1;
  --gold: #8A5A00;
  --coral: #B83A1E;
  --blue: #1450C4;
  --star: transparent;
  --focus: #1462E0;
  --danger: #B42318;
  --live-bg: #DDF5EF;
  --live-ink: #0B5E53;
  --coming-bg: #ECE8FF;
  --coming-ink: #4A2FB8;
  --inc-bg: #DDF5EF;
  --inc-ink: #0B5E53;
  --exc-bg: #FCE8E6;
  --exc-ink: #9B1C12;
  color-scheme: light;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 17px/1.6 var(--sans); overflow-x: hidden; }
img { max-width: 100%; height: auto; }
a { color: var(--link); }
a:hover { color: var(--link-hover); }
h1, h2, h3 { font-family: var(--display); line-height: 1.12; margin: 0; letter-spacing: -.01em; }
p { margin: 0; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 3px; border-radius: 6px; }
.sr-only { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.skip { position: absolute; inset-inline-start: -9999px; top: 0; z-index: 100; background: var(--surface); color: var(--ink); padding: 12px 18px; border: 2px solid var(--focus); }
.skip:focus { inset-inline-start: 12px; top: 12px; }
.wrap { width: 100%; max-width: 1240px; margin: 0 auto; padding: 0 24px; }
.narrow { width: 100%; max-width: 760px; margin: 0 auto; padding: 0 24px; }
@media (max-width: 480px) { .wrap, .narrow { padding: 0 16px; } }
.hidden { display: none; }

/* ---------- gradient wordmark (live text, solid fallback) ---------- */
.wordmark, .grad-text { color: var(--blue); }
@supports ((-webkit-background-clip: text) or (background-clip: text)) {
  .wordmark, .grad-text { background: var(--grad); -webkit-background-clip: text; background-clip: text; color: transparent; }
}
.wordmark { font-family: var(--display); font-weight: 700; font-size: 20px; letter-spacing: .01em; white-space: nowrap; }

/* ---------- buttons ---------- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 44px; padding: 10px 20px; border-radius: 999px;
  font: 600 15px/1.2 var(--sans); text-decoration: none; border: 1px solid transparent; cursor: pointer; text-align: center; }
.btn-lg { min-height: 52px; padding: 14px 26px; font-size: 17px; }
.btn-primary { background: var(--grad-cta); color: #fff; }
.btn-primary:hover { color: #fff; filter: brightness(.9); }
.btn-outline { border-color: var(--line-strong); color: var(--ink); background: transparent; }
.btn-outline:hover { color: var(--ink); border-color: var(--cyan); }
.btn-ghost { color: var(--ink); border-color: var(--line-strong); }
.btn-ghost:hover { color: var(--ink); background: var(--surface-2); }
.btn-row { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; }

/* ---------- header ---------- */
.site-header { position: sticky; top: 0; z-index: 50; background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.header-row { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 72px; }
.brand { display: inline-flex; align-items: center; gap: 12px; text-decoration: none; min-height: 44px; min-width: 0; }
.brand-mark { width: 48px; height: 32px; flex: none; }
.main-nav ul { list-style: none; margin: 0; padding: 0; display: flex; align-items: center; gap: 6px; }
.main-nav a:not(.btn) { display: inline-flex; align-items: center; min-height: 44px; padding: 0 12px; color: var(--ink-2); text-decoration: none; font-size: 15px; border-radius: 8px; }
.main-nav a:not(.btn):hover { color: var(--ink); background: var(--surface-2); }
.main-nav a[aria-current="page"] { color: var(--ink); font-weight: 600; box-shadow: inset 0 -2px 0 var(--cyan); }
.nav-cta { margin-inline-start: 6px; }
.menu-toggle { display: none; align-items: center; gap: 8px; min-height: 44px; padding: 0 16px; border-radius: 999px; border: 1px solid var(--line-strong); background: transparent; color: var(--ink); font: 600 15px var(--sans); cursor: pointer; }
@media (max-width: 1023px) {
  .menu-toggle { display: inline-flex; }
  .main-nav { position: absolute; inset-inline-start: 0; inset-inline-end: 0; top: 100%; background: var(--bg); border-bottom: 1px solid var(--line); display: none; }
  .main-nav.open { display: block; }
  .main-nav ul { flex-direction: column; align-items: stretch; padding: 8px 16px 16px; gap: 4px; }
  .main-nav a:not(.btn) { display: flex; }
  .nav-cta { margin: 6px 0 0; }
  .nav-cta .btn { width: 100%; }
}
@media (max-width: 360px) { .wordmark { font-size: 17px; } .brand-mark { width: 40px; height: 27px; } .brand { gap: 8px; } .menu-toggle { padding: 0 12px; } }

/* ---------- homepage ---------- */
.stars { position: absolute; inset: 0 0 auto 0; height: 1400px; pointer-events: none; z-index: -1;
  background-image: radial-gradient(1.2px 1.2px at 6% 8%, var(--star) 50%, transparent 51%), radial-gradient(1px 1px at 17% 3%, var(--star) 50%, transparent 51%),
    radial-gradient(1.4px 1.4px at 29% 14%, var(--star) 50%, transparent 51%), radial-gradient(1px 1px at 43% 6%, var(--star) 50%, transparent 51%),
    radial-gradient(1.2px 1.2px at 62% 2%, var(--star) 50%, transparent 51%), radial-gradient(1px 1px at 78% 10%, var(--star) 50%, transparent 51%),
    radial-gradient(1.3px 1.3px at 94% 5%, var(--star) 50%, transparent 51%), radial-gradient(1px 1px at 11% 31%, var(--star) 50%, transparent 51%),
    radial-gradient(1.1px 1.1px at 36% 37%, var(--star) 50%, transparent 51%), radial-gradient(1.4px 1.4px at 89% 33%, var(--star) 50%, transparent 51%),
    radial-gradient(1px 1px at 4% 55%, var(--star) 50%, transparent 51%), radial-gradient(1px 1px at 97% 59%, var(--star) 50%, transparent 51%);
  opacity: .8; }
main { position: relative; z-index: 0; }
.hero { padding: 64px 0 40px; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr); gap: 48px; align-items: center; }
.eyebrow { font: 600 13px/1.4 var(--mono); letter-spacing: .18em; text-transform: uppercase; color: var(--cyan); }
.eyebrow-violet { color: var(--violet); }
.eyebrow-gold { color: var(--gold); }
.hero h1 { margin-top: 18px; font-weight: 700; font-size: clamp(38px, 6vw, 76px); line-height: 1.04; letter-spacing: -.02em; }
.hero h1 .line { display: block; }
.lead { margin-top: 24px; max-width: 560px; font-size: 19px; color: var(--ink-2); }
.mono-line { margin-top: 18px; font: 500 13px/1.6 var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--muted-2); }
.hero .btn-row { margin-top: 32px; }
.hero-art { display: flex; justify-content: center; min-width: 0; }
.hero-symbol { width: 100%; max-width: 520px; }
:root[data-theme="light"] .hero-symbol { filter: none; }
@media (max-width: 1023px) { .hero-grid { grid-template-columns: 1fr; gap: 32px; } .hero-art { order: -1; } .hero-symbol { max-width: 420px; } .hero { padding-top: 36px; } }

.flow { padding: 16px 0 56px; }
.flow-chips { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 10px; }
.flow-chips li { font: 500 13px/1.2 var(--mono); letter-spacing: .06em; padding: 9px 14px; border-radius: 999px; border: 1px solid var(--line); background: color-mix(in srgb, var(--surface) 70%, transparent); color: var(--ink-2); }
.flow-chips li + li::before { content: "→ "; color: var(--cyan); }

.section { padding: 56px 0; }
.section-title { font-size: clamp(28px, 4vw, 44px); font-weight: 700; overflow-wrap: anywhere; }
.section-intro { margin-top: 14px; max-width: 660px; color: var(--ink-2); }
.fine { margin-top: 14px; font-size: 15px; color: var(--muted); }

.domain-grid { list-style: none; margin: 36px 0 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 16px; }
@media (max-width: 600px) { .domain-grid { grid-template-columns: 1fr; } }
.domain { padding: 22px; border-radius: 18px; background: var(--surface); border: 1px solid var(--line); display: flex; flex-direction: column; gap: 10px; min-width: 0; }
.domain-head { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.domain h3 { font-size: 18px; font-weight: 600; flex: 1 1 auto; min-width: 0; }
.domain p { font-size: 15px; line-height: 1.55; color: var(--muted); }
.dot { width: 12px; height: 12px; border-radius: 50%; flex: none; background: var(--cyan); }
.tone-violet .dot { background: #9B8CFF; } .tone-blue .dot { background: #1E7BFF; } .tone-coral .dot { background: #FF5A3C; } .tone-gold .dot { background: #F2B544; } .tone-teal .dot { background: #19E3C0; }
.status { display: inline-flex; align-items: center; gap: 6px; font: 600 12px/1 var(--mono); letter-spacing: .08em; text-transform: uppercase; padding: 6px 10px; border-radius: 999px; white-space: nowrap; }
.status.is-live { background: var(--live-bg); color: var(--live-ink); }
.status.is-live::before { content: "●"; font-size: 9px; }
.status.is-coming { background: var(--coming-bg); color: var(--coming-ink); }
.status.is-coming::before { content: "◌"; font-size: 11px; }
.status-line { margin-top: 18px; font-size: 15px; color: var(--muted); display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }

.split-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 40px; align-items: start; }
@media (max-width: 900px) { .split-grid { grid-template-columns: 1fr; gap: 28px; } }
.panel { margin: 0; padding: 24px; border-radius: 18px; background: var(--surface); border: 1px solid var(--line); min-width: 0; }
.panel-violet { border-color: rgba(155, 140, 255, .45); }
.panel-gold { border-color: rgba(242, 181, 68, .45); }
.panel-label { font: 500 12px/1.4 var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--muted-2); }
.panel-title { margin-top: 10px; font-weight: 600; font-size: 17px; }
.panel-title.uc { font-family: var(--display); color: var(--gold); letter-spacing: .04em; }
.rule-chips { list-style: none; margin: 16px 0 0; padding: 0; display: flex; flex-wrap: wrap; gap: 8px; font-size: 14px; }
.rule-chips li { padding: 7px 12px; border-radius: 999px; }
.rule-chips .inc { background: var(--inc-bg); color: var(--inc-ink); }
.rule-chips .exc { background: var(--exc-bg); color: var(--exc-ink); }
.mono-small { font: 500 13px/1.5 var(--mono); color: var(--muted); }
.panel > .mono-small { margin-top: 16px; }
.why { margin-top: 18px; padding: 16px; border-radius: 12px; background: var(--surface-2); }
.why-title { font-weight: 600; font-size: 15px; }
.why ul { list-style: none; margin: 10px 0 0; padding: 0; display: flex; flex-direction: column; gap: 6px; font-size: 15px; color: var(--ink-2); }
.why li span { color: var(--cyan); }
.checks { list-style: none; margin: 16px 0 0; padding: 0; display: flex; flex-direction: column; gap: 10px; font-size: 15px; }
.checks li { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; padding-bottom: 10px; border-bottom: 1px solid var(--line); color: var(--ink-2); }
.checks .ok { color: var(--cyan); }

.rules { list-style: none; margin: 32px 0 0; padding: 0; display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 14px; }
@media (max-width: 600px) { .rules { grid-template-columns: 1fr; } }
.rules li { padding: 18px 20px; border-radius: 14px; border: 1px solid var(--line); font-size: 15px; line-height: 1.5; color: var(--ink-2); background: color-mix(in srgb, var(--surface) 60%, transparent); }

.cta-section { padding-bottom: 96px; }
.cta { position: relative; padding: 44px 32px; border-radius: 24px; background: var(--surface); border: 1px solid transparent; background-clip: padding-box;
  display: flex; flex-wrap: wrap; gap: 24px; align-items: center; justify-content: space-between; }
.cta::before { content: ""; position: absolute; inset: -1px; border-radius: 25px; padding: 1px; background: var(--grad); -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0); -webkit-mask-composite: xor; mask-composite: exclude; pointer-events: none; }
.cta > div:first-child { flex: 1 1 380px; min-width: 0; }
.cta h2 { font-size: clamp(26px, 3vw, 36px); }
.cta p { margin-top: 10px; color: var(--ink-2); }
@media (max-width: 480px) { .cta { padding: 28px 20px; } .cta .btn-row .btn { width: 100%; } .hero .btn-row .btn { width: 100%; } }

/* ---------- inner pages ---------- */
.page-hero { padding: 64px 0 32px; }
.page-hero h1 { margin-top: 14px; font-size: clamp(32px, 4.5vw, 52px); overflow-wrap: anywhere; }
.page-hero p:not(.eyebrow) { margin-top: 14px; max-width: 680px; color: var(--ink-2); }
.back-link { display: inline-flex; align-items: center; min-height: 44px; margin-bottom: 8px; }
.center { text-align: center; }
.prose { color: var(--ink-2); overflow-wrap: anywhere; }
.prose h2 { margin: 36px 0 12px; font-size: 24px; color: var(--ink); }
.prose p { margin: 0 0 14px; }
.prose img, .prose-img { border-radius: 12px; }
/* Draft legal pages: visible "Draft — under legal review" box and the related-pages list */
.draft-notice { margin: 0 0 28px; padding: 16px 18px; border: 1px solid var(--gold); border-inline-start-width: 4px; border-radius: 12px; background: var(--surface-2); color: var(--ink); }
.draft-notice p { margin: 0; }
.draft-notice p + p { margin-top: 8px; color: var(--ink-2); }
.draft-notice strong { color: var(--gold); }
.legal-related { margin-top: 48px; padding-top: 8px; border-top: 1px solid var(--line); }
.legal-related ul { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 4px 20px; }
.legal-related a { display: inline-flex; align-items: center; min-height: 44px; }
.card-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 20px; }
@media (max-width: 600px) { .card-grid { grid-template-columns: 1fr; } }
.card { position: relative; border-radius: 18px; overflow: hidden; background: var(--surface); border: 1px solid var(--line); }
.card a.stretch { display: block; color: inherit; text-decoration: none; }
.card img { display: block; width: 100%; aspect-ratio: 16 / 9; object-fit: cover; }
.card-body { padding: 18px 20px 22px; display: flex; flex-direction: column; gap: 8px; }
.card-title { font-size: 20px; }
.tag { align-self: flex-start; font: 600 12px/1 var(--mono); letter-spacing: .08em; text-transform: uppercase; padding: 6px 10px; border-radius: 999px; background: var(--coming-bg); color: var(--coming-ink); }
.meta { font-size: 14px; color: var(--muted); }

/* ---------- contact form ---------- */
.contact-grid { display: grid; grid-template-columns: minmax(0, 2fr) minmax(0, 1fr); gap: 32px; align-items: start; }
@media (max-width: 900px) { .contact-grid { grid-template-columns: 1fr; } }
.form-panel h2 { font-size: 26px; }
.form-note { margin: 8px 0 24px; color: var(--muted); font-size: 15px; }
.form .row { display: grid; grid-template-columns: 1fr 1fr; gap: 0 16px; }
@media (max-width: 600px) { .form .row { grid-template-columns: 1fr; } }
.field { display: flex; flex-direction: column; gap: 6px; margin-bottom: 16px; min-width: 0; }
.field label { font-weight: 600; font-size: 15px; }
.field input, .field select, .field textarea { width: 100%; min-height: 48px; padding: 10px 14px; border-radius: 12px; border: 1px solid var(--line-strong); background: var(--bg); color: var(--ink); font: 16px/1.4 var(--sans); }
.field textarea { resize: vertical; }
.field input:focus, .field select:focus, .field textarea:focus { outline: 3px solid var(--focus); outline-offset: 1px; border-color: var(--focus); }
.field [aria-invalid="true"] { border-color: var(--danger); }
.field-error { color: var(--danger); font-size: 14px; font-weight: 600; }
.check { display: flex; gap: 12px; align-items: flex-start; font-weight: 400 !important; }
.check input { width: 22px; height: 22px; min-height: 0; margin-top: 2px; flex: none; accent-color: #1462E0; }
.form-alert { padding: 12px 16px; margin-bottom: 18px; border-radius: 12px; border: 1px solid var(--danger); color: var(--danger); }
.side-list { list-style: none; margin: 12px 0 0; padding: 0; display: flex; flex-direction: column; gap: 12px; font-size: 15px; color: var(--ink-2); }
.side-list li { padding-inline-start: 18px; position: relative; }
.side-list li::before { content: ""; position: absolute; inset-inline-start: 0; top: .6em; width: 7px; height: 7px; border-radius: 50%; background: var(--cyan); }

/* ---------- footer ---------- */
.site-footer { border-top: 1px solid var(--line); padding-top: 44px; color: var(--muted); font-size: 15px; }
.footer-cols { display: grid; grid-template-columns: minmax(0, 2fr) minmax(0, 1fr) minmax(0, 1fr) minmax(0, 1fr); gap: 32px; }
@media (max-width: 1024px) { .footer-cols { grid-template-columns: repeat(3, minmax(0, 1fr)); } .footer-brand { grid-column: 1 / -1; } }
@media (max-width: 768px) { .footer-cols { grid-template-columns: 1fr 1fr; } .footer-brand { grid-column: 1 / -1; } }
@media (max-width: 400px) { .footer-cols { grid-template-columns: 1fr; } }
.footer-cols h2 { font: 600 13px/1.4 var(--mono); letter-spacing: .14em; text-transform: uppercase; color: var(--muted-2); margin-bottom: 8px; }
.footer-cols > div { display: flex; flex-direction: column; min-width: 0; }
.footer-cols a:not(.brand) { display: inline-flex; align-items: center; min-height: 44px; color: var(--ink-2); text-decoration: none; }
.footer-cols a:not(.brand):hover { color: var(--ink); text-decoration: underline; }
.footer-brand .mono-line { margin-top: 12px; }
.footer-note { margin-top: 12px; max-width: 460px; font-size: 14px; }
.footer-bottom { display: flex; flex-wrap: wrap; gap: 12px 24px; justify-content: space-between; align-items: center; padding-top: 28px; padding-bottom: 28px; margin-top: 28px; border-top: 1px solid var(--line); font-size: 14px; }
.theme-toggle { display: inline-flex; align-items: center; gap: 8px; min-height: 44px; padding: 0 16px; border-radius: 999px; border: 1px solid var(--line-strong); background: transparent; color: var(--ink-2); font: 500 14px var(--sans); cursor: pointer; }
.theme-toggle:hover { color: var(--ink); }
.footer-tools { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; }
.lang-switch { display: inline-flex; align-items: center; gap: 8px; }
.lang-switch[hidden] { display: none; }
.lang-switch label { display: inline-flex; align-items: center; gap: 6px; color: var(--ink-2); font: 500 14px var(--sans); }
.lang-switch select { min-height: 44px; max-width: 100%; padding-block: 0; padding-inline: 12px 8px; border-radius: 999px; border: 1px solid var(--line-strong); background: transparent; color: var(--ink); font: 500 14px var(--sans); }
.lang-switch select option { background: var(--bg); color: var(--ink); }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}
/* light theme: the deep end of the brand gradient keeps gradient text readable on a light ground */
:root[data-theme="light"] .wordmark, :root[data-theme="light"] .grad-text { color: #1462E0; }
@supports ((-webkit-background-clip: text) or (background-clip: text)) {
  :root[data-theme="light"] .wordmark, :root[data-theme="light"] .grad-text { background: var(--grad-cta); -webkit-background-clip: text; background-clip: text; color: transparent; }
}
.term { font: 500 12px/1.4 var(--mono); letter-spacing: .06em; color: var(--muted-2); text-transform: none; }
.panel-title .term { margin-inline-start: 8px; }