/* HelixVault site styles */
:root {
  --bg: #0A0F1C;
  --bg-2: #0E1526;
  --surface: #111A2E;
  --surface-2: #182341;
  --border: rgba(255,255,255,0.08);
  --text: #F5F5F7;
  --text-dim: rgba(245,245,247,0.62);
  --text-faint: rgba(245,245,247,0.38);
  --accent: #FF8B5A;
  --accent-2: #FFB38A;
  --accent-deep: #E86A33;
  --ring: rgba(255,139,90,0.35);
  --maxw: 1240px;
  --pad: clamp(20px, 4vw, 48px);
  --radius: 18px;
  --radius-lg: 28px;
  --font-display: 'Inter Tight', 'Inter', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, Menlo, monospace;
}

html[data-theme="light"] {
  --bg: #F5F4F0;
  --bg-2: #EDEBE4;
  --surface: #FFFFFF;
  --surface-2: #F9F7F2;
  --border: rgba(10,15,28,0.08);
  --text: #0A0F1C;
  --text-dim: rgba(10,15,28,0.66);
  --text-faint: rgba(10,15,28,0.42);
  --accent: #E86A33;
  --accent-2: #FF8B5A;
  --ring: rgba(232,106,51,0.28);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  letter-spacing: -0.005em;
  overflow-x: hidden;
}

html[data-reduced-motion="true"] * {
  animation-duration: 0.001s !important;
  animation-delay: 0s !important;
  transition-duration: 0.001s !important;
}
html[data-reduced-motion="true"] .parallax { transform: none !important; }

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

/* ---------- Nav ---------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 50;
  padding: 14px var(--pad);
  display: flex; align-items: center; justify-content: space-between;
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  background: color-mix(in oklab, var(--bg) 72%, transparent);
  border-bottom: 1px solid transparent;
  transition: border-color .3s ease, background .3s ease;
}
.nav.scrolled { border-bottom-color: var(--border); }
.nav-brand { display: flex; align-items: center; gap: 10px; font-family: var(--font-display); font-weight: 600; letter-spacing: -0.02em; font-size: 18px; }
.nav-brand img { width: 28px; height: 28px; }
.nav-links { display: flex; gap: 28px; font-size: 14px; color: var(--text-dim); }
.nav-links a { transition: color .2s; }
.nav-links a:hover { color: var(--text); }
.nav-cta { display: flex; align-items: center; gap: 12px; }
.nav-toggle {
  display: none; background: none; border: none; cursor: pointer;
  width: 28px; height: 28px; padding: 0; position: relative;
}
.nav-toggle span {
  display: block; width: 20px; height: 2px; background: var(--text);
  border-radius: 2px; position: absolute; left: 4px;
  transition: transform .3s ease, opacity .3s ease;
}
.nav-toggle span:nth-child(1) { top: 8px; }
.nav-toggle span:nth-child(2) { top: 13px; }
.nav-toggle span:nth-child(3) { top: 18px; }
.nav-toggle.open span:nth-child(1) { top: 13px; transform: rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { top: 13px; transform: rotate(-45deg); }

@media (max-width: 760px) {
  .nav-toggle { display: block; }
  .nav-links {
    display: none; flex-direction: column; gap: 0;
    position: absolute; top: 100%; left: 0; right: 0;
    background: color-mix(in oklab, var(--bg) 95%, transparent);
    backdrop-filter: saturate(180%) blur(20px);
    -webkit-backdrop-filter: saturate(180%) blur(20px);
    border-bottom: 1px solid var(--border);
    padding: 8px 0;
  }
  .nav-links.open { display: flex; }
  .nav-links a {
    padding: 14px var(--pad);
    border-top: 1px solid var(--border);
    font-size: 15px;
  }
  .nav-links a:first-child { border-top: none; }
  .nav-cta { display: none; }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 11px 18px; border-radius: 999px; font-size: 14px; font-weight: 500;
  border: 1px solid transparent; cursor: pointer; transition: all .2s ease;
  font-family: var(--font-body);
  white-space: nowrap;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-deep); transform: translateY(-1px); box-shadow: 0 8px 30px var(--ring); }
.btn-ghost { background: transparent; color: var(--text); border-color: var(--border); }
.btn-ghost:hover { border-color: var(--text-dim); }
.btn-lg { padding: 14px 24px; font-size: 15px; }

/* ---------- Layout ---------- */
.container { max-width: var(--maxw); margin: 0 auto; padding: 0 var(--pad); }
.section { padding: clamp(80px, 12vw, 160px) 0; position: relative; }
.eyebrow {
  font-family: var(--font-mono); font-size: 11px; letter-spacing: 0.18em;
  text-transform: uppercase; color: var(--accent); display: inline-flex; align-items: center; gap: 8px;
}
.eyebrow::before {
  content: ""; width: 22px; height: 1px; background: var(--accent);
}

h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 600; letter-spacing: -0.035em; margin: 0; line-height: 1.02; }
h1 { font-size: clamp(44px, 7vw, 104px); }
h2 { font-size: clamp(34px, 5.2vw, 72px); }
h3 { font-size: clamp(22px, 2.4vw, 32px); letter-spacing: -0.02em; }
p { margin: 0; }
.lead { font-size: clamp(17px, 1.4vw, 20px); color: var(--text-dim); line-height: 1.5; max-width: 58ch; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  min-height: 100vh;
  padding: 140px var(--pad) 60px;
  display: flex; flex-direction: column; justify-content: center;
  overflow: hidden;
}
.hero-bg {
  position: absolute; inset: 0; z-index: 0; pointer-events: none;
}
.hero-bg::before {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% 0%, color-mix(in oklab, var(--accent) 14%, transparent), transparent 60%),
    radial-gradient(ellipse 60% 40% at 20% 100%, color-mix(in oklab, var(--accent) 8%, transparent), transparent 70%);
}
.hero-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 80px 80px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, #000 40%, transparent 80%);
  opacity: 0.5;
}

.hero-inner { position: relative; z-index: 2; max-width: var(--maxw); margin: 0 auto; width: 100%; }
.hero-grid-layout { display: grid; grid-template-columns: 1.1fr 1fr; gap: 60px; align-items: center; }
@media (max-width: 900px) {
  .hero-grid-layout { grid-template-columns: 1fr; gap: 40px; }
}

.hero-badge {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 6px 12px 6px 6px; border-radius: 999px;
  background: color-mix(in oklab, var(--surface) 80%, transparent);
  border: 1px solid var(--border); font-size: 12px; color: var(--text-dim);
  margin-bottom: 28px;
}
.hero-badge-dot {
  width: 22px; height: 22px; border-radius: 50%;
  background: radial-gradient(circle at 30% 30%, var(--accent-2), var(--accent));
  box-shadow: 0 0 14px var(--ring);
}
.hero h1 { margin-bottom: 24px; }
.hero h1 .gradient {
  background: linear-gradient(120deg, var(--accent-2) 0%, var(--accent) 55%, #FFD9C3 100%);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero-sub { max-width: 48ch; color: var(--text-dim); font-size: clamp(17px, 1.35vw, 20px); margin-bottom: 36px; }
.hero-cta { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; margin-bottom: 36px; }
.hero-meta { display: flex; gap: 28px; color: var(--text-faint); font-size: 13px; font-family: var(--font-mono); letter-spacing: .02em; flex-wrap: wrap; }
.hero-meta span { display: inline-flex; align-items: center; gap: 8px; }
.hero-meta .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 8px var(--accent); }

/* Phone mock */
.phone {
  position: relative;
  width: min(340px, 84vw);
  aspect-ratio: 460/940;
  margin: 0 auto;
  border-radius: 48px;
  padding: 10px;
  background: linear-gradient(145deg, #2a2f3d, #0d1018);
  box-shadow:
    0 40px 100px -20px rgba(0,0,0,0.7),
    0 0 0 1px rgba(255,255,255,0.06) inset,
    0 -4px 20px rgba(255,139,90,0.12) inset;
}
.phone-screen {
  position: relative;
  width: 100%; height: 100%;
  border-radius: 40px;
  overflow: hidden;
  background: #000;
}
.phone-screen img { width: 100%; height: 100%; object-fit: cover; }
.phone-notch {
  position: absolute; top: 12px; left: 50%; transform: translateX(-50%);
  width: 96px; height: 28px; border-radius: 20px;
  background: #000; z-index: 2;
}
.phone-glow {
  position: absolute; inset: -40px; z-index: -1;
  background: radial-gradient(ellipse 60% 50% at 50% 60%, color-mix(in oklab, var(--accent) 30%, transparent), transparent 60%);
  filter: blur(30px);
  opacity: 0.7;
}

/* Hero variant A (default) */
.helix-bg { display: none; }
.orbit-bg { display: none; }

/* ---------- Feature parallax section ---------- */
.features {
  position: relative;
  padding: 120px 0;
}
.features-intro { text-align: center; max-width: 780px; margin: 0 auto 120px; padding: 0 var(--pad); }
.features-intro h2 { margin: 20px 0 16px; }
.features-intro .lead { margin: 0 auto; }

.feature-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
  padding: 100px var(--pad);
  max-width: var(--maxw);
  margin: 0 auto;
}
.feature-row:nth-child(even) .feature-text { order: 2; }
.feature-row .parallax-phone {
  position: relative;
  will-change: transform;
  transition: transform 0.1s linear;
}
.feature-text .eyebrow { margin-bottom: 16px; }
.feature-text h3 { margin-bottom: 18px; font-size: clamp(28px, 3.4vw, 46px); letter-spacing: -0.03em; }
.feature-text p { color: var(--text-dim); font-size: clamp(15px, 1.1vw, 17px); max-width: 46ch; }
.feature-text ul { margin: 28px 0 0; padding: 0; list-style: none; }
.feature-text li {
  padding: 14px 0;
  border-top: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
  font-size: 14px; color: var(--text-dim);
}
.feature-text li:last-child { border-bottom: 1px solid var(--border); }
.feature-text li span { color: var(--text); }
.feature-text li small { font-family: var(--font-mono); font-size: 11px; color: var(--text-faint); letter-spacing: 0.08em; }
.feature-text li small .wave-char {
  display: inline-block;
  color: var(--text-faint);
  transition: color 0.4s ease;
}
.feature-text li small .wave-char.lit {
  color: var(--accent);
}

@media (max-width: 900px) {
  .feature-row { grid-template-columns: 1fr; gap: 40px; padding: 60px var(--pad); }
  .feature-row:nth-child(even) .feature-text { order: 0; }
}

/* ---------- Reveal text ---------- */
.reveal-line {
  display: block;
  overflow: hidden;
}
.reveal-line > span {
  display: inline-block;
  transform: translateY(110%);
  transition: transform 0.9s cubic-bezier(0.2, 0.9, 0.2, 1);
}
.reveal-line.is-in > span { transform: translateY(0); }
.reveal-line:nth-child(2) > span { transition-delay: 80ms; }
.reveal-line:nth-child(3) > span { transition-delay: 160ms; }
.reveal-line:nth-child(4) > span { transition-delay: 240ms; }

.fade-up { opacity: 0; transform: translateY(28px); transition: opacity .9s ease, transform .9s cubic-bezier(0.2, 0.9, 0.2, 1); }
.fade-up.is-in { opacity: 1; transform: translateY(0); }

/* ---------- Privacy / counters ---------- */
.privacy-section {
  background:
    radial-gradient(ellipse 80% 60% at 50% 0%, color-mix(in oklab, var(--accent) 6%, transparent), transparent 70%),
    var(--bg-2);
  padding: clamp(80px, 12vw, 140px) 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.privacy-inner { text-align: center; max-width: 880px; margin: 0 auto; padding: 0 var(--pad); }
.privacy-stats {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px;
  margin-top: 80px;
}
.stat {
  padding: 32px;
  background: color-mix(in oklab, var(--surface) 70%, transparent);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  text-align: left;
}
.stat-num {
  font-family: var(--font-display); font-size: clamp(40px, 5vw, 64px);
  font-weight: 600; letter-spacing: -0.04em; color: var(--accent);
  line-height: 1;
}
.stat-label { margin-top: 12px; color: var(--text-dim); font-size: 14px; }
@media (max-width: 720px) {
  .privacy-stats { grid-template-columns: 1fr; }
}

/* Lock icon */
.lock-icon {
  width: 72px; height: 72px; margin: 0 auto 32px;
  display: block;
}

/* ---------- Library ---------- */
.library {
  padding: clamp(80px, 12vw, 140px) var(--pad);
  overflow: hidden;
}
.library-head { max-width: var(--maxw); margin: 0 auto 56px; display: flex; align-items: end; justify-content: space-between; gap: 24px; flex-wrap: wrap; }
.library-head h2 { max-width: 16ch; }
.peptide-row {
  display: flex; gap: 16px;
  animation: scroll-x 40s linear infinite;
  width: max-content;
}
.peptide-row:hover { animation-play-state: paused; }
.peptide-card {
  flex: 0 0 280px;
  padding: 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  display: flex; align-items: center; gap: 14px;
}
.peptide-card .icon {
  width: 44px; height: 44px; border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0; font-family: var(--font-mono); font-weight: 600; font-size: 13px;
}
.peptide-card h4 { font-size: 15px; font-weight: 600; margin: 0; }
.peptide-card small { color: var(--text-faint); font-size: 12px; font-family: var(--font-mono); }
.peptide-card p { color: var(--text-dim); font-size: 12px; margin-top: 2px; }
@keyframes scroll-x { to { transform: translateX(-50%); } }

/* ---------- CTA ---------- */
.cta-section {
  padding: clamp(100px, 14vw, 180px) var(--pad);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-section::before {
  content: ""; position: absolute; inset: 0;
  background: radial-gradient(ellipse 50% 50% at 50% 50%, color-mix(in oklab, var(--accent) 16%, transparent), transparent 60%);
  z-index: 0;
}
.cta-section > * { position: relative; z-index: 1; }
.cta-section h2 { max-width: 16ch; margin: 0 auto 20px; }
.cta-section .lead { margin: 0 auto 40px; }
.email-form {
  display: flex; gap: 8px; max-width: 480px; margin: 0 auto; padding: 6px;
  background: var(--surface); border: 1px solid var(--border); border-radius: 999px;
}
.email-form input {
  flex: 1; background: transparent; border: none; outline: none;
  padding: 10px 16px; color: var(--text); font-size: 15px; font-family: inherit;
}
.email-form input::placeholder { color: var(--text-faint); }
.email-form .btn { flex-shrink: 0; }
.email-success {
  display: none; margin-top: 20px; color: var(--accent);
  font-family: var(--font-mono); font-size: 13px; letter-spacing: .05em;
}
.email-success.on { display: block; }

/* ---------- FAQ ---------- */
.faq { padding: clamp(80px, 12vw, 140px) 0; border-top: 1px solid var(--border); }
.faq-grid {
  max-width: var(--maxw); margin: 0 auto; padding: 0 var(--pad);
  display: grid; grid-template-columns: 1fr 1.4fr; gap: 80px;
}
.faq-item {
  border-top: 1px solid var(--border);
  padding: 24px 0;
  cursor: pointer;
}
.faq-item:last-child { border-bottom: 1px solid var(--border); }
.faq-q { display: flex; justify-content: space-between; align-items: center; font-family: var(--font-display); font-size: 18px; font-weight: 500; letter-spacing: -0.01em; }
.faq-q .plus { color: var(--accent); transition: transform .3s; font-size: 22px; line-height: 1; }
.faq-a { max-height: 0; overflow: hidden; transition: max-height .4s ease; color: var(--text-dim); font-size: 15px; }
.faq-item.open .faq-a { max-height: 220px; padding-top: 12px; }
.faq-item.open .plus { transform: rotate(45deg); }
@media (max-width: 900px) { .faq-grid { grid-template-columns: 1fr; gap: 40px; } }

/* ---------- Legal pages ---------- */
.legal {
  padding: 140px var(--pad) 120px;
  max-width: 820px; margin: 0 auto;
}
.legal h1 { font-size: clamp(36px, 5vw, 60px); margin-bottom: 12px; }
.legal .meta { font-family: var(--font-mono); font-size: 12px; color: var(--text-faint); letter-spacing: 0.08em; text-transform: uppercase; margin-bottom: 56px; }
.legal h2 { font-size: clamp(22px, 2.4vw, 28px); margin: 56px 0 16px; letter-spacing: -0.02em; }
.legal h3 { font-size: 17px; margin: 32px 0 10px; font-weight: 600; }
.legal p { color: var(--text-dim); margin: 0 0 16px; font-size: 16px; line-height: 1.65; }
.legal ul { color: var(--text-dim); padding-left: 22px; margin: 0 0 16px; }
.legal li { margin: 8px 0; }
.legal strong { color: var(--text); font-weight: 600; }
.legal a { color: var(--accent); border-bottom: 1px solid color-mix(in oklab, var(--accent) 40%, transparent); }
.legal .toc {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 24px; margin: 40px 0;
}
.legal .toc h4 { margin: 0 0 12px; font-family: var(--font-display); font-size: 13px; color: var(--text-dim); letter-spacing: 0.1em; text-transform: uppercase; font-weight: 500; }
.legal .toc ol { margin: 0; padding-left: 20px; color: var(--text-dim); font-size: 14px; columns: 2; column-gap: 32px; }
.legal .toc li { margin: 6px 0; break-inside: avoid; }
@media (max-width: 620px) { .legal .toc ol { columns: 1; } }

/* ---------- Support / FAQ page ---------- */
.support-hero {
  padding: 140px var(--pad) 60px; text-align: center;
  max-width: 820px; margin: 0 auto;
}
.support-hero h1 { font-size: clamp(36px, 5vw, 60px); margin-bottom: 16px; }
.support-hero p { color: var(--text-dim); font-size: 18px; max-width: 58ch; margin: 0 auto; }
.support-contact {
  max-width: 820px; margin: 40px auto;
  padding: 32px; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-lg);
  display: flex; flex-wrap: wrap; gap: 20px; align-items: center; justify-content: space-between;
}
.support-contact h3 { margin: 0 0 6px; font-size: 20px; }
.support-contact p { margin: 0; color: var(--text-dim); font-size: 14px; }

.support-faq { max-width: 820px; margin: 0 auto; padding: 40px var(--pad) 140px; }
.support-faq h2 { font-size: clamp(26px, 3vw, 36px); margin: 0 0 24px; }

/* ---------- Footer ---------- */
.footer {
  padding: 80px var(--pad) 40px;
  background: var(--bg-2);
  border-top: 1px solid var(--border);
  color: var(--text-dim); font-size: 14px;
}
.footer-inner { max-width: var(--maxw); margin: 0 auto; }
.footer-top { display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 60px; }
.footer-brand { display: flex; align-items: center; gap: 10px; margin-bottom: 16px; font-family: var(--font-display); font-weight: 600; color: var(--text); font-size: 18px; }
.footer-brand img { width: 28px; height: 28px; }
.footer h5 { font-family: var(--font-display); font-size: 13px; font-weight: 600; color: var(--text); margin: 0 0 16px; letter-spacing: 0.02em; }
.footer ul { list-style: none; padding: 0; margin: 0; }
.footer li { margin: 10px 0; }
.footer li a:hover { color: var(--text); }
.footer-bottom {
  display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap;
  padding-top: 24px; border-top: 1px solid var(--border);
  font-size: 12px; color: var(--text-faint);
}
.footer-disclaimer { max-width: 80ch; margin-top: 16px; font-size: 11px; color: var(--text-faint); line-height: 1.6; }
@media (max-width: 900px) {
  .footer-top { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 520px) {
  .footer-top { grid-template-columns: 1fr; gap: 30px; }
}