/* AURA FORGE — landing page styles
   Matches the in-app Circadian design system (docs/aura/02_AURA_FORGE_IDENTITY.md):
   Forge orange accent, dark premium surfaces, Outfit + Space Grotesk type. */

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

:root {
  --bg: #0a0a0f;
  --bg-2: #111827;
  --surface: rgba(255, 255, 255, 0.045);
  --surface-strong: rgba(255, 255, 255, 0.07);
  --border: rgba(255, 255, 255, 0.09);
  --border-strong: rgba(255, 255, 255, 0.16);
  --text: #f9fafb;
  --text-2: #a4a9bd;
  --text-3: #6b7086;
  --forge: #e05c20;
  --forge-bright: #ff7a3d;
  --forge-dim: rgba(224, 92, 32, 0.16);
  --hydration: #3b82f6;
  --sleep: #6366f1;
  --fasting: #f59e0b;
  --body: #22c55e;
  --hero-gold: #ffd21e;
  --companion: #a855f7;
  --network: #3498db;
  --radius-sm: 10px;
  --radius: 16px;
  --radius-lg: 24px;
  --max: 1160px;
  --font-body: "Outfit", -apple-system, "Segoe UI", system-ui, sans-serif;
  --font-display: "Space Grotesk", "Outfit", -apple-system, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.12;
  margin: 0;
  letter-spacing: -0.01em;
}

p {
  margin: 0;
}

.container {
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 20px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--forge);
  color: #fff;
  padding: 10px 16px;
  border-radius: 0 0 8px 0;
  z-index: 200;
  font-weight: 600;
}
.skip-link:focus {
  left: 0;
}

:focus-visible {
  outline: 2px solid var(--forge-bright);
  outline-offset: 2px;
}

/* background ambience */
.bg-glow {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(720px 480px at 82% -8%, rgba(224, 92, 32, 0.16), transparent 60%),
    radial-gradient(640px 460px at 8% 12%, rgba(99, 102, 241, 0.10), transparent 60%),
    var(--bg);
}

/* ---------- header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 10, 15, 0.72);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
}
.header-row {
  display: flex;
  align-items: center;
  gap: 20px;
  height: 68px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 17px;
  letter-spacing: 0.01em;
  text-decoration: none;
  flex-shrink: 0;
}
.brand img {
  width: 32px;
  height: 32px;
}
.main-nav {
  display: flex;
  gap: 28px;
  margin-left: 12px;
  flex: 1;
}
.main-nav a {
  color: var(--text-2);
  text-decoration: none;
  font-size: 14.5px;
  font-weight: 500;
  transition: color 0.15s;
}
.main-nav a:hover {
  color: var(--text);
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.lang-switch {
  display: flex;
  border: 1px solid var(--border-strong);
  border-radius: 999px;
  overflow: hidden;
}
.lang-switch a {
  padding: 6px 12px;
  font-size: 12.5px;
  font-weight: 600;
  text-decoration: none;
  color: var(--text-3);
}
.lang-switch a[aria-current="true"] {
  background: var(--surface-strong);
  color: var(--text);
}
.menu-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  color: var(--text);
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

/* ---------- buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 22px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 14.5px;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease, border-color 0.15s ease;
  white-space: nowrap;
}
.btn:active {
  transform: scale(0.97);
}
.btn-primary {
  background: linear-gradient(135deg, var(--forge-bright), var(--forge));
  color: #fff;
  box-shadow: 0 8px 24px rgba(224, 92, 32, 0.28);
}
.btn-primary:hover {
  box-shadow: 0 10px 30px rgba(224, 92, 32, 0.4);
  transform: translateY(-1px);
}
.btn-ghost {
  background: var(--surface);
  color: var(--text);
  border-color: var(--border-strong);
}
.btn-ghost:hover {
  background: var(--surface-strong);
  border-color: var(--forge);
}
.btn-sm {
  padding: 9px 16px;
  font-size: 13px;
}
.btn-block {
  width: 100%;
}

/* ---------- hero ---------- */
.hero {
  padding: 64px 0 40px;
}
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 48px;
  align-items: center;
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--forge-bright);
  background: var(--forge-dim);
  border: 1px solid rgba(224, 92, 32, 0.3);
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 20px;
}
.hero h1 {
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  margin-bottom: 20px;
}
.hero h1 .accent {
  color: var(--forge-bright);
}
.hero-sub {
  color: var(--text-2);
  font-size: 17.5px;
  max-width: 46ch;
  margin-bottom: 30px;
}
.hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 16px;
}
.hero-note {
  font-size: 13px;
  color: var(--text-3);
}
.hero-note strong {
  color: var(--text-2);
}

.hero-visual {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 380px;
}
.hero-orb-glow {
  position: absolute;
  width: 340px;
  height: 340px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(224, 92, 32, 0.35), transparent 70%);
  filter: blur(10px);
  animation: pulse-glow 4.5s ease-in-out infinite;
}
@keyframes pulse-glow {
  0%, 100% { transform: scale(1); opacity: 0.85; }
  50% { transform: scale(1.08); opacity: 1; }
}
.hero-emblem {
  position: relative;
  width: 220px;
  height: 220px;
  z-index: 2;
  filter: drop-shadow(0 20px 50px rgba(224, 92, 32, 0.35));
}
.float-card {
  position: absolute;
  background: var(--surface-strong);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.35);
  z-index: 3;
  animation: float-bob 6s ease-in-out infinite;
}
.float-card.a { top: 6%; left: -4%; animation-delay: 0s; }
.float-card.b { bottom: 10%; right: -6%; animation-delay: 1.2s; }
.float-card.c { bottom: -4%; left: 12%; animation-delay: 2.4s; }
@keyframes float-bob {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}
.float-label {
  font-size: 10.5px;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 4px;
}
.float-value {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 17px;
}
.ring-mini {
  width: 34px;
  height: 34px;
}
.float-row {
  display: flex;
  align-items: center;
  gap: 10px;
}
.macro-bars {
  display: flex;
  gap: 4px;
  margin-top: 6px;
}
.macro-bars span {
  height: 5px;
  border-radius: 3px;
  flex: 1;
  display: block;
}

/* ---------- pillars ---------- */
.pillars {
  padding: 20px 0 56px;
}
.pillars-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.pillar {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
}
.pillar .pi {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  background: var(--forge-dim);
  color: var(--forge-bright);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
  font-size: 18px;
}
.pillar h3 {
  font-size: 16px;
  margin-bottom: 8px;
}
.pillar p {
  color: var(--text-2);
  font-size: 14px;
}

/* ---------- section shell ---------- */
.section {
  padding: 64px 0;
}
.section-head {
  max-width: 640px;
  margin: 0 0 40px;
}
.section-head .eyebrow {
  margin-bottom: 14px;
}
.section-head h2 {
  font-size: clamp(1.7rem, 3.4vw, 2.3rem);
  margin-bottom: 12px;
}
.section-head p {
  color: var(--text-2);
  font-size: 15.5px;
}

/* ---------- features ---------- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.feature-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 3px solid var(--card-accent, var(--forge));
  border-radius: var(--radius);
  padding: 22px;
  transition: transform 0.18s ease, border-color 0.18s ease, background 0.18s ease;
}
.feature-card:hover {
  transform: translateY(-3px);
  background: var(--surface-strong);
}
.feature-icon {
  width: 38px;
  height: 38px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  margin-bottom: 14px;
  background: color-mix(in srgb, var(--card-accent, var(--forge)) 18%, transparent);
  color: var(--card-accent, var(--forge));
}
.feature-card h3 {
  font-size: 16px;
  margin-bottom: 8px;
}
.feature-card p {
  font-size: 14px;
  color: var(--text-2);
}

/* ---------- steps ---------- */
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  counter-reset: step;
}
.step {
  position: relative;
  padding-top: 8px;
}
.step .num {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 13px;
  color: var(--forge-bright);
  border: 1px solid rgba(224, 92, 32, 0.35);
  background: var(--forge-dim);
  width: 30px;
  height: 30px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}
.step h3 {
  font-size: 16.5px;
  margin-bottom: 8px;
}
.step p {
  color: var(--text-2);
  font-size: 14.5px;
}

/* ---------- evidence band ---------- */
.evidence-band {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  display: flex;
  gap: 24px;
  align-items: flex-start;
}
.evidence-band .ei {
  font-size: 26px;
  flex-shrink: 0;
}
.evidence-band h3 {
  font-size: 17px;
  margin-bottom: 8px;
}
.evidence-band p {
  color: var(--text-2);
  font-size: 14.5px;
  max-width: 62ch;
}

/* ---------- download ---------- */
.download-panel {
  background: linear-gradient(160deg, rgba(224, 92, 32, 0.14), rgba(255, 255, 255, 0.02));
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  padding: 44px;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 40px;
}
.download-panel h2 {
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  margin-bottom: 14px;
}
.download-panel > div > p {
  color: var(--text-2);
  font-size: 15px;
  margin-bottom: 22px;
  max-width: 44ch;
}
.store-badges {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 10px;
}
.store-badge img {
  height: 54px;
  border-radius: 8px;
}
.store-badge {
  display: inline-block;
  transition: transform 0.15s ease;
}
.store-badge:hover {
  transform: translateY(-2px);
}
.ios-note {
  font-size: 13px;
  color: var(--text-3);
}

.waitlist-card {
  background: var(--surface-strong);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  padding: 26px;
  align-self: start;
}
.waitlist-card h3 {
  font-size: 15.5px;
  margin-bottom: 6px;
}
.waitlist-card p {
  font-size: 13px;
  color: var(--text-2);
  margin-bottom: 16px;
}
.waitlist-form {
  display: flex;
  gap: 8px;
}
.waitlist-form input[type="email"] {
  flex: 1;
  min-width: 0;
  padding: 11px 14px;
  border-radius: 10px;
  border: 1px solid var(--border-strong);
  background: rgba(0, 0, 0, 0.25);
  color: var(--text);
  font-size: 14px;
  font-family: var(--font-body);
}
.waitlist-form input[type="email"]:focus {
  border-color: var(--forge);
}
.waitlist-form label {
  position: absolute;
  left: -9999px;
}
.form-msg {
  margin-top: 10px;
  font-size: 13px;
  min-height: 18px;
}
.form-msg.ok { color: var(--body); }
.form-msg.err { color: #f87171; }
.privacy-note {
  font-size: 11.5px;
  color: var(--text-3);
  margin-top: 12px;
}
.privacy-note a {
  color: var(--text-2);
  text-decoration: underline;
}

/* ---------- footer ---------- */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 36px 0 44px;
}
.footer-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-2);
  font-size: 13.5px;
}
.footer-brand img {
  width: 22px;
  height: 22px;
}
.footer-links {
  display: flex;
  gap: 20px;
  font-size: 13.5px;
}
.footer-links a {
  color: var(--text-3);
  text-decoration: none;
}
.footer-links a:hover {
  color: var(--text-2);
}

/* ---------- reveal-on-scroll ---------- */
.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.in {
  opacity: 1;
  transform: none;
}

/* ---------- responsive ---------- */
@media (max-width: 900px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }
  .hero-visual {
    order: -1;
    min-height: 280px;
  }
  .pillars-grid,
  .features-grid,
  .steps {
    grid-template-columns: repeat(2, 1fr);
  }
  .download-panel {
    grid-template-columns: 1fr;
    padding: 30px;
  }
}

@media (max-width: 720px) {
  .main-nav {
    position: fixed;
    top: 68px;
    left: 0;
    right: 0;
    background: rgba(10, 10, 15, 0.97);
    backdrop-filter: blur(14px);
    flex-direction: column;
    padding: 16px 20px 24px;
    border-bottom: 1px solid var(--border);
    display: none;
    gap: 4px;
  }
  .main-nav.open {
    display: flex;
  }
  .main-nav a {
    padding: 12px 4px;
    border-bottom: 1px solid var(--border);
    font-size: 15px;
  }
  .menu-toggle {
    display: flex;
  }
  .header-actions .btn-sm.desktop-only {
    display: none;
  }
  .pillars-grid,
  .features-grid,
  .steps {
    grid-template-columns: 1fr;
  }
  .hero {
    padding-top: 32px;
  }
  .evidence-band {
    flex-direction: column;
  }
  .waitlist-form {
    flex-direction: column;
  }
  .footer-row {
    flex-direction: column;
    align-items: flex-start;
  }
}