/* ─────────────────────────────────────────────────────────────────
   relay.css — Relay v3 shared design system
   Foundation · Nav · Footer · Page Hero · Legal layout
   ───────────────────────────────────────────────────────────────── */

/* RESET & BASE */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }

/* TOKENS */
:root, [data-theme="dark"] {
  --bg: #090b14; --surface: #111526; --surface-hi: #181d34;
  --border: #252b42; --border-hi: #323a58;
  --text: #f0f2f8; --text-2: #c8d0e4; --text-3: #8890a8;
  --accent: #00D9C8; --accent-dim: rgba(0,217,200,0.10); --accent-glow: rgba(0,217,200,0.20);
  --font-sans: 'IBM Plex Sans', sans-serif;
  --font-mono: 'DM Mono', monospace;
  --font-code: 'JetBrains Mono', monospace;
  --radius: 8px; --radius-lg: 12px; --max: 1120px; --nav-h: 60px;
  color-scheme: dark;
}
[data-theme="light"] {
  --bg: #f4f5f7; --surface: #ffffff; --surface-hi: #eef0f6;
  --border: #d1d5e0; --border-hi: #b8bdd0;
  --text: #0d1117; --text-2: #1f2937; --text-3: #4b5563;
  --accent: #00D9C8; --accent-dim: rgba(0,217,200,0.10); --accent-glow: rgba(0,217,200,0.20);
  color-scheme: light;
}
@media (prefers-color-scheme: light) {
  :root:not([data-theme]) {
    --bg: #f4f5f7; --surface: #ffffff; --surface-hi: #eef0f6;
    --border: #d1d5e0; --border-hi: #b8bdd0;
    --text: #0d1117; --text-2: #1f2937; --text-3: #4b5563;
    --accent: #00D9C8; --accent-dim: rgba(0,217,200,0.10); --accent-glow: rgba(0,217,200,0.20);
    color-scheme: light;
  }
}

/* GLOBAL ELEMENTS */
body { background: var(--bg); color: var(--text); font-family: var(--font-mono); font-size: 14px; line-height: 1.65; overflow-x: hidden; }
a { color: inherit; text-decoration: none; }
img, svg { display: block; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }

/* LAYOUT */
.container { max-width: var(--max); margin: 0 auto; padding: 0 28px; }

/* BUTTONS */
.btn { display: inline-flex; align-items: center; gap: 7px; padding: 10px 22px; font-family: var(--font-sans); font-size: 13px; font-weight: 600; letter-spacing: 0.01em; border-radius: var(--radius); transition: all 0.18s ease; white-space: nowrap; cursor: pointer; }
.btn-primary { background: var(--accent); color: #07080f; }
.btn-primary:hover { background: #00f0de; box-shadow: 0 0 24px var(--accent-glow); }
[data-theme="light"] .btn-primary:hover,
.no-pref-light .btn-primary:hover { background: #00f0de; box-shadow: 0 0 24px var(--accent-glow); }
.btn-ghost { background: transparent; color: var(--text-2); border: 1px solid var(--border-hi); }
.btn-ghost:hover { color: var(--text); background: var(--surface-hi); border-color: var(--border-hi); }

/* NAV */
.nav { position: fixed; top: 0; left: 0; right: 0; z-index: 1000; height: var(--nav-h); border-bottom: 1px solid var(--border); background: rgba(9,11,20,0.92); backdrop-filter: blur(12px); transition: background 0.25s; }
[data-theme="light"] .nav { background: rgba(244,245,247,0.94); }
@media (prefers-color-scheme: light) { :root:not([data-theme]) .nav { background: rgba(244,245,247,0.94); } }
.nav-inner { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.nav-logo { display: flex; align-items: center; gap: 9px; flex-shrink: 0; }
.nav-logo-word { font-family: var(--font-sans); font-size: 17px; font-weight: 600; color: var(--text); letter-spacing: -0.01em; }
.nav-links { display: flex; align-items: center; gap: 4px; list-style: none; }
.nav-links a { font-family: var(--font-sans); font-size: 13px; font-weight: 500; color: var(--text-2); padding: 6px 12px; border-radius: 6px; transition: color 0.15s, background 0.15s; }
.nav-links a:hover, .nav-links a.active { color: var(--text); background: var(--surface-hi); }
.nav-actions { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.theme-toggle { display: flex; align-items: center; justify-content: center; width: 34px; height: 34px; border-radius: var(--radius); color: var(--text-3); border: 1px solid var(--border); transition: color 0.15s, border-color 0.15s, background 0.15s; }
.theme-toggle:hover { color: var(--text); border-color: var(--border-hi); background: var(--surface-hi); }
.theme-toggle .icon-moon { display: block; }
.theme-toggle .icon-sun { display: none; }
[data-theme="light"] .theme-toggle .icon-moon { display: none; }
[data-theme="light"] .theme-toggle .icon-sun { display: block; }
@media (prefers-color-scheme: light) {
  :root:not([data-theme]) .theme-toggle .icon-moon { display: none; }
  :root:not([data-theme]) .theme-toggle .icon-sun { display: block; }
}
.nav-toggle { display: none; flex-direction: column; gap: 4px; padding: 8px; border-radius: 6px; }
.nav-toggle span { display: block; width: 20px; height: 1.5px; background: var(--text-2); transition: all 0.2s; }
@media (max-width: 768px) {
  .nav-links { display: none; }
  .nav-actions .btn { display: none; }
  .nav-actions .btn-ghost { display: none; }
  .nav-toggle { display: flex; }
}
.nav-open .nav-links { display: flex; flex-direction: column; align-items: flex-start; gap: 2px; position: fixed; top: var(--nav-h); left: 0; right: 0; background: var(--bg); border-bottom: 1px solid var(--border); padding: 16px 20px 20px; z-index: 1001; }
.nav-open .nav-links a { font-size: 15px; width: 100%; padding: 10px 14px; }
.nav-backdrop { display: none; position: fixed; inset: 0; z-index: 1000; background: transparent; }
.nav-open .nav-backdrop { display: block; }
.nav-open .nav-toggle span:nth-child(1) { transform: translateY(5.5px) rotate(45deg); }
.nav-open .nav-toggle span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav-open .nav-toggle span:nth-child(3) { transform: translateY(-5.5px) rotate(-45deg); }

/* PAGE HERO — used on all sub-pages */
.page-hero { padding: calc(var(--nav-h) + 64px) 0 48px; position: relative; overflow: hidden; border-bottom: 1px solid var(--border); }
.page-hero::before { content: ''; position: absolute; top: 0; left: 50%; transform: translateX(-50%); width: 600px; height: 400px; background: radial-gradient(ellipse at 50% 0%, rgba(0,217,200,0.05) 0%, transparent 65%); pointer-events: none; }
.page-hero-inner { position: relative; z-index: 1; max-width: 700px; }
.page-eyebrow { font-family: var(--font-code); font-size: 10px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--accent); margin-bottom: 16px; display: flex; align-items: center; gap: 10px; }
.page-eyebrow .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); animation: pulse 2.5s infinite; }
@keyframes pulse { 0%,100%{opacity:1;transform:scale(1)} 50%{opacity:0.4;transform:scale(0.85)} }
.page-hero h1 { font-family: var(--font-sans); font-size: clamp(28px, 3.5vw, 42px); font-weight: 700; letter-spacing: -0.02em; line-height: 1.1; color: var(--text); margin-bottom: 16px; }
.page-hero-meta { font-family: var(--font-code); font-size: 12px; color: var(--text-3); }
.page-hero-sub  { font-family: var(--font-code); font-size: 12px; color: var(--text-3); }

/* LEGAL CONTENT — privacy + terms pages */
.legal-section { padding: 72px 0 100px; }
.legal-layout { display: grid; grid-template-columns: 200px 1fr; gap: 64px; max-width: 900px; }
.legal-toc { position: sticky; top: calc(var(--nav-h) + 24px); height: fit-content; }
.legal-toc-head { font-family: var(--font-code); font-size: 9px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--text-3); margin-bottom: 14px; }
.legal-toc-links { list-style: none; display: flex; flex-direction: column; gap: 4px; }
.legal-toc-links a { font-family: var(--font-sans); font-size: 12px; color: var(--text-3); padding: 4px 10px; border-radius: 5px; display: block; transition: color 0.15s, background 0.15s; border-left: 2px solid transparent; }
.legal-toc-links a:hover { color: var(--text-2); background: var(--surface); }
.legal-toc-links a.active { color: var(--accent); border-left-color: var(--accent); background: var(--accent-dim); }
.legal-body h2 { font-family: var(--font-sans); font-size: 16px; font-weight: 700; color: var(--text); margin-top: 48px; margin-bottom: 14px; padding-bottom: 10px; border-bottom: 1px solid var(--border); letter-spacing: -0.01em; scroll-margin-top: calc(var(--nav-h) + 16px); }
.legal-body h2:first-child { margin-top: 0; }
.legal-body p { font-size: 13px; line-height: 1.8; color: var(--text-2); margin-bottom: 14px; }
.legal-body ul, .legal-body ol { padding-left: 20px; margin-bottom: 14px; }
.legal-body li { font-size: 13px; line-height: 1.75; color: var(--text-2); margin-bottom: 5px; }
.legal-body strong { color: var(--text); font-weight: 600; }
.legal-body a { color: var(--accent); text-decoration: underline; text-underline-offset: 2px; }
.legal-body code { font-family: var(--font-code); font-size: 12px; background: var(--surface); border: 1px solid var(--border); border-radius: 4px; padding: 1px 6px; color: var(--accent); }
@media (max-width: 768px) { .legal-layout { grid-template-columns: 1fr; } .legal-toc { display: none; } }

/* FOOTER */
.footer { padding: 56px 0 40px; background: var(--surface); border-top: 2px solid var(--accent); position: relative; }
.footer::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 80px; background: linear-gradient(to bottom, var(--accent-glow), transparent); pointer-events: none; }
.footer-top { display: flex; align-items: flex-start; justify-content: space-between; gap: 40px; flex-wrap: wrap; padding-bottom: 40px; border-bottom: 1px solid var(--border); margin-bottom: 32px; }
.footer-brand { max-width: 280px; }
.footer-logo { display: flex; align-items: center; gap: 9px; margin-bottom: 10px; }
.footer-logo-word { font-family: var(--font-sans); font-size: 16px; font-weight: 600; color: var(--text); }
.footer-descriptor { font-family: var(--font-code); font-size: 11px; color: var(--text-3); line-height: 1.9; }
.footer-descriptor .acc { color: var(--accent); }
.footer-nav-group { display: flex; gap: 56px; flex-wrap: wrap; }
.footer-col-head { font-family: var(--font-code); font-size: 10px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--text-3); margin-bottom: 14px; }
.footer-col-links { list-style: none; display: flex; flex-direction: column; gap: 8px; }
.footer-col-links a { font-family: var(--font-sans); font-size: 13px; font-weight: 500; color: var(--text-2); transition: color 0.15s; }
.footer-col-links a:hover { color: var(--text); }
.footer-bottom { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 16px; }
.footer-legal { font-family: var(--font-code); font-size: 11px; color: var(--text-3); }
.footer-legal a { color: var(--text-3); transition: color 0.15s; }
.footer-legal a:hover { color: var(--text-2); }
.footer-legal .sep { margin: 0 8px; }
.footer-beta-badge { font-family: var(--font-code); font-size: 9px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--accent); background: var(--accent-dim); border: 1px solid rgba(0,217,200,0.2); padding: 3px 9px; border-radius: 3px; }