/* ============================================================
   SURFCAST — Ember Wave web system
   Shared across landing, blog, article, terms, privacy
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=Hanken+Grotesk:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;700&display=swap');

:root {
  /* Backgrounds — from AppTheme */
  --bg-base:     #0C1322;
  --bg-section:  #111827;
  --bg-surface:  #192033;
  --bg-card:     #1C2740;
  --bg-elevated: #2D3A52;

  /* Accents (tweakable) */
  --orange-400: #FF9D38;
  --orange-500: #FF8C00;
  --orange-600: #E07800;
  --cyan-400:   #1FDFD2;
  --cyan-500:   #0ECFBD;
  --accent:     #0094E0;
  --accent-hi:  #00C4FE;
  --accent-2:   #00C4FE;

  /* Neutrals / text */
  --text-primary:   #FFFFFF;
  --text-secondary: #8FA8C4;
  --text-tertiary:  #5C7088;
  --text-faint:     #3C4A5E;

  /* Borders */
  --border-subtle:  rgba(255,255,255,.06);
  --border-default: rgba(255,255,255,.10);
  --border-strong:  rgba(255,255,255,.18);

  /* Chart / model colors */
  --m-ecmwf:  #66BB6A;
  --m-gfs:    #00C4FE;
  --m-mfwam:  #FF8A37;
  --m-dwd:    #AB47BC;

  /* Wave gradient */
  --wave-top:    #005FC3;
  --wave-bottom: #00C4FE;

  /* Type */
  --font-display: 'Space Grotesk', sans-serif;
  --font-body:    'Hanken Grotesk', sans-serif;
  --font-mono:    'JetBrains Mono', monospace;

  /* Radii */
  --r-sm: 8px;
  --r-md: 14px;
  --r-lg: 22px;
  --r-xl: 32px;

  --maxw: 1200px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  background: var(--bg-base);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }
ul { list-style: none; }

/* ── Wave-line texture (used in dark sections) ── */
.wave-texture {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='1400' height='220' viewBox='0 0 1400 220'%3E%3Cg fill='none' stroke='%23ffffff' stroke-opacity='0.035' stroke-width='1.5'%3E%3Cpath d='M0 30 C 175 0, 350 60, 525 30 S 875 0, 1050 30 1400 30'/%3E%3Cpath d='M0 70 C 175 40, 350 100, 525 70 S 875 40, 1050 70 1400 70'/%3E%3Cpath d='M0 110 C 175 80, 350 140, 525 110 S 875 80, 1050 110 1400 110'/%3E%3Cpath d='M0 150 C 175 120, 350 180, 525 150 S 875 120, 1050 150 1400 150'/%3E%3Cpath d='M0 190 C 175 160, 350 220, 525 190 S 875 160, 1050 190 1400 190'/%3E%3C/g%3E%3C/svg%3E");
  background-repeat: repeat;
}

/* ============================================================
   TYPOGRAPHY
   ============================================================ */
.eyebrow {
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 500;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--accent-hi);
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.eyebrow.cyan { color: var(--accent-2); }
.eyebrow::before {
  content: "";
  width: 22px; height: 1px;
  background: currentColor;
  opacity: .6;
}

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.04;
  letter-spacing: -0.02em;
}
.display {
  font-size: clamp(44px, 7.2vw, 92px);
  font-weight: 600;
  line-height: 0.98;
  letter-spacing: -0.035em;
}
h2.section-title {
  font-size: clamp(32px, 4.4vw, 56px);
  letter-spacing: -0.03em;
}
.lede {
  font-size: clamp(17px, 1.5vw, 21px);
  color: var(--text-secondary);
  line-height: 1.55;
  max-width: 46ch;
}
.mono { font-family: var(--font-mono); }

/* ============================================================
   LAYOUT
   ============================================================ */
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 28px; }
section { position: relative; }

/* ── Nav ── */
.nav {
  position: sticky; top: 0; z-index: 80;
  background: rgba(12,19,34,.72);
  backdrop-filter: blur(18px) saturate(160%);
  -webkit-backdrop-filter: blur(18px) saturate(160%);
  border-bottom: 1px solid var(--border-subtle);
}
.nav-inner {
  max-width: var(--maxw); margin: 0 auto;
  padding: 14px 28px;
  display: flex; align-items: center; justify-content: space-between;
  gap: 24px;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand .mark { width: 34px; height: 34px; border-radius: 9px; flex-shrink: 0; box-shadow: 0 4px 14px rgba(0,0,0,.4); }
.brand .name {
  font-family: var(--font-display);
  font-weight: 600; font-size: 20px; letter-spacing: -0.02em;
}
.nav-links { display: flex; align-items: center; gap: 6px; }
.nav-links a {
  font-size: 15px; font-weight: 500; color: var(--text-secondary);
  padding: 8px 14px; border-radius: 999px; transition: color .15s, background .15s;
}
.nav-links a:hover { color: var(--text-primary); background: var(--border-subtle); }
.nav-cta { display: flex; align-items: center; gap: 12px; }
.menu-btn { display: none; }

/* ── Buttons ── */
.btn {
  display: inline-flex; align-items: center; gap: 9px;
  font-family: var(--font-body);
  font-weight: 600; font-size: 16px;
  padding: 13px 22px; border-radius: 999px;
  border: 1px solid transparent; cursor: pointer;
  transition: transform .14s ease, box-shadow .2s ease, background .2s ease;
  white-space: nowrap;
}
.btn:active { transform: translateY(1px) scale(.99); }
.btn-primary {
  background: var(--accent); color: #fff;
  box-shadow: 0 8px 26px -8px color-mix(in srgb, var(--accent) 70%, transparent);
}
.btn-primary:hover { background: var(--accent-hi); box-shadow: 0 12px 30px -8px color-mix(in srgb, var(--accent) 75%, transparent); }
.btn-ghost { background: transparent; color: var(--text-primary); border-color: var(--border-strong); }
.btn-ghost:hover { background: var(--border-subtle); border-color: var(--text-secondary); }

/* App Store badge */
.appstore {
  display: inline-flex; align-items: center; gap: 12px;
  background: #fff; color: #000;
  padding: 11px 20px 11px 18px; border-radius: 14px;
  transition: transform .14s ease, box-shadow .2s ease;
  box-shadow: 0 10px 28px -12px rgba(0,0,0,.7);
}
.appstore:hover { transform: translateY(-2px); box-shadow: 0 16px 34px -12px rgba(0,0,0,.7); }
.appstore svg { width: 26px; height: 26px; flex-shrink: 0; }
.appstore .small { font-size: 11px; line-height: 1.1; font-weight: 500; opacity: .7; }
.appstore .small, .appstore .big { white-space: nowrap; }
.appstore .big { font-family: var(--font-display); font-size: 19px; font-weight: 600; line-height: 1.05; letter-spacing: -.01em; }
.appstore.soon { background: transparent; color: var(--text-secondary); border: 1px solid var(--border-strong); box-shadow: none; }
.appstore.soon:hover { transform: none; }
.appstore.soon .big { color: var(--text-primary); }

/* ── Rating inline ── */
.rating { display: inline-flex; align-items: center; gap: 10px; color: var(--text-secondary); font-size: 14px; }
.stars { display: inline-flex; gap: 2px; color: var(--accent-hi); }
.stars svg { width: 16px; height: 16px; }

/* ── Model chips ── */
.chip {
  display: inline-flex; align-items: center; gap: 9px;
  font-family: var(--font-mono); font-size: 13.5px; font-weight: 500;
  color: var(--text-secondary);
  padding: 8px 15px; border-radius: 999px;
  background: var(--bg-surface); border: 1px solid var(--border-subtle);
}
.chip .dot { width: 9px; height: 9px; border-radius: 50%; flex-shrink: 0; }

/* ── Cards ── */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--r-lg);
  padding: 30px;
}

/* ── Footer ── */
.footer {
  background: var(--bg-section);
  border-top: 1px solid var(--border-subtle);
  padding: 72px 0 40px;
}
.footer-grid {
  display: grid; grid-template-columns: 1.6fr 1fr 1fr 1fr; gap: 40px;
}
.footer h4 {
  font-family: var(--font-mono); font-size: 12px; font-weight: 500;
  letter-spacing: .16em; text-transform: uppercase; color: var(--text-tertiary);
  margin-bottom: 18px;
}
.footer-links { display: flex; flex-direction: column; gap: 11px; }
.footer-links a { color: var(--text-secondary); font-size: 15px; transition: color .15s; }
.footer-links a:hover { color: var(--text-primary); }
.footer .blurb { color: var(--text-secondary); font-size: 15px; max-width: 30ch; margin-top: 16px; }
.footer-bottom {
  margin-top: 56px; padding-top: 26px; border-top: 1px solid var(--border-subtle);
  display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap;
  color: var(--text-tertiary); font-size: 14px;
}
.footer-bottom .mono { font-family: var(--font-mono); font-size: 12.5px; letter-spacing: .04em; }

/* ============================================================
   REUSABLE: phone frame & sunset mark
   ============================================================ */
.phone {
  position: relative;
  border-radius: 44px;
  padding: 11px;
  background: linear-gradient(150deg, #2a3548, #131a29);
  box-shadow:
    0 2px 2px rgba(255,255,255,.08) inset,
    0 50px 90px -40px rgba(0,0,0,.85),
    0 30px 60px -30px rgba(0,0,0,.6);
}
.phone::after {
  content: ""; position: absolute; top: 22px; left: 50%; transform: translateX(-50%);
  width: 34%; height: 26px; background: #0a0f1a; border-radius: 0 0 16px 16px; z-index: 3;
}
.phone img { border-radius: 34px; width: 100%; display: block; }

/* sunset brand mark base (square uses app-icon image) */

/* ============================================================
   ANIMATIONS
   ============================================================ */
@media (prefers-reduced-motion: no-preference) {
  .reveal { opacity: 0; transform: translateY(26px); transition: opacity .8s cubic-bezier(.2,.7,.2,1), transform .8s cubic-bezier(.2,.7,.2,1); }
  .reveal.in { opacity: 1; transform: none; }
  .reveal.d1 { transition-delay: .08s; }
  .reveal.d2 { transition-delay: .16s; }
  .reveal.d3 { transition-delay: .24s; }
}

/* ============================================================
   LEGAL PAGES (terms / privacy)
   ============================================================ */
.legal-head { padding: 56px 0 36px; position: relative; overflow: hidden; }
.legal-head::before { content:""; position:absolute; inset:0; z-index:0;
  background: radial-gradient(760px 380px at 10% -30%, color-mix(in srgb, var(--accent) 11%, transparent), transparent 60%); }
.legal-head .wrap { position: relative; z-index: 2; }
.legal-head h1 { font-size: clamp(38px, 5.4vw, 64px); letter-spacing: -.035em; margin: 18px 0 14px; }
.legal-head .updated { font-family: var(--font-mono); font-size: 13px; color: var(--text-tertiary); letter-spacing: .03em; }
.legal-head .intro { color: var(--text-secondary); font-size: 18px; max-width: 60ch; margin-top: 20px; line-height: 1.6; }

.legal-grid { display: grid; grid-template-columns: 240px 1fr; gap: 60px; padding: 24px 0 110px; align-items: start; }
.toc { position: sticky; top: 90px; }
.toc .t { font-family: var(--font-mono); font-size: 11px; letter-spacing: .16em; text-transform: uppercase; color: var(--text-tertiary); margin-bottom: 16px; }
.toc ol { list-style: none; counter-reset: toc; display:flex; flex-direction:column; gap: 3px; }
.toc a { display: flex; gap: 10px; font-size: 14px; color: var(--text-secondary); padding: 7px 12px; border-radius: 9px; line-height: 1.35; transition: color .15s, background .15s; counter-increment: toc; }
.toc a::before { content: counter(toc, decimal-leading-zero); font-family: var(--font-mono); font-size: 11px; color: var(--text-faint); flex-shrink:0; padding-top: 2px; }
.toc a:hover { color: var(--text-primary); background: var(--border-subtle); }

.legal-body { max-width: 760px; }
.legal-body section { padding-top: 14px; margin-bottom: 14px; scroll-margin-top: 88px; }
.legal-body h2 { font-size: clamp(23px, 2.4vw, 30px); letter-spacing: -.02em; margin-bottom: 16px; display:flex; align-items:baseline; gap: 14px; }
.legal-body h2 .num { font-family: var(--font-mono); font-size: 14px; color: var(--accent-hi); }
.legal-body h3 { font-family: var(--font-display); font-size: 18px; font-weight: 600; margin: 26px 0 10px; }
.legal-body p { font-size: 17px; line-height: 1.72; color: #C8D3E0; margin-bottom: 18px; }
.legal-body ul { display:flex; flex-direction:column; gap: 11px; margin: 0 0 22px; }
.legal-body ul li { font-size: 16.5px; line-height: 1.6; color: #C8D3E0; padding-left: 24px; position: relative; }
.legal-body ul li::before { content:""; position:absolute; left:3px; top:10px; width:7px; height:7px; border-radius:50%; background: var(--accent-hi); opacity:.85; }
.legal-body a { color: var(--accent-2); border-bottom: 1px solid color-mix(in srgb, var(--accent-2) 35%, transparent); }
.legal-body strong { color: #fff; font-weight: 600; }
.legal-body .lead { font-size: 18px; color: var(--text-secondary); }
.legal-note { background: var(--bg-card); border: 1px solid var(--border-subtle); border-left: 3px solid var(--accent); border-radius: var(--r-md); padding: 20px 24px; margin: 8px 0 30px; }
.legal-note p { font-size: 15.5px; color: var(--text-secondary); margin: 0; }
.legal-divider { height:1px; background: var(--border-subtle); border:0; margin: 34px 0; }

@media (max-width: 880px) {
  .legal-grid { grid-template-columns: 1fr; gap: 8px; }
  .toc { position: static; margin-bottom: 30px; padding-bottom: 26px; border-bottom: 1px solid var(--border-subtle); }
  .toc ol { display:grid; grid-template-columns: 1fr 1fr; gap: 2px; }
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 880px) {
  .nav-links { display: none; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}
@media (max-width: 560px) {
  body { font-size: 16px; }
  .wrap { padding: 0 20px; }
  .nav-inner { padding: 12px 20px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}