/* ============================================
   THE MEMORY WAVE — Design Tokens
   Palette: Night Indigo #1B1C30, Warm Paper #FAF6EF,
            Amber Wave #D9A24B, Sage #7E8C79, Ink #2B2A3D
   Display: Fraunces (calm, slightly unusual serif)
   Body: Inter
   Signature: animated waveform motif used as hero visual
              and as section dividers
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,300..700&family=Inter:wght@400;500;600;700&display=swap');

:root {
  --night: #1B1C30;
  --night-soft: #25273F;
  --paper: #FAF6EF;
  --paper-dim: #F1EBDD;
  --ink: #2B2A3D;
  --ink-soft: #5B5A70;
  --amber: #D9A24B;
  --amber-soft: #E8C088;
  --sage: #7E8C79;
  --sage-soft: #A9B6A4;
  --line: rgba(43, 42, 61, 0.12);
  --line-on-night: rgba(250, 246, 239, 0.14);

  --font-display: 'Fraunces', serif;
  --font-body: 'Inter', sans-serif;

  --radius: 14px;
  --max-width: 1180px;
  --shadow-soft: 0 20px 60px rgba(27, 28, 48, 0.12);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.highlight {
  color: var(--amber);
  font-style: italic;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.15;
  margin: 0 0 16px;
  color: var(--ink);
}

h1 { font-size: clamp(2.2rem, 4.2vw, 3.4rem); }
h2 { font-size: clamp(1.8rem, 3vw, 2.5rem); text-align: center; }
h3 { font-size: 1.25rem; }

.section-sub {
  text-align: center;
  color: var(--ink-soft);
  max-width: 620px;
  margin: 0 auto 48px;
  font-size: 1.05rem;
}

p { margin: 0 0 16px; color: var(--ink-soft); }

section { padding: 88px 0; position: relative; }

/* ---------- Buttons ---------- */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--amber);
  color: var(--night);
  font-weight: 600;
  font-family: var(--font-body);
  padding: 16px 30px;
  border-radius: 999px;
  font-size: 1rem;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
  box-shadow: 0 10px 30px rgba(217, 162, 75, 0.35);
  border: none;
  cursor: pointer;
}
.btn-primary:hover {
  transform: translateY(-2px);
  background: var(--amber-soft);
}
.btn-xl { padding: 20px 40px; font-size: 1.1rem; }
.btn-full { width: 100%; justify-content: center; }

.pulse-btn {
  animation: pulse 2.6s infinite;
}
@keyframes pulse {
  0%, 100% { box-shadow: 0 10px 30px rgba(217, 162, 75, 0.35); }
  50% { box-shadow: 0 10px 40px rgba(217, 162, 75, 0.6); }
}

/* ---------- Navbar ---------- */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(250, 246, 239, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.nav-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 18px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.25rem;
  display: flex;
  align-items: center;
  gap: 8px;
}
.nav-menu {
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--ink);
  transition: color 0.2s;
}
.nav-link:hover { color: var(--amber); }
.nav-cta {
  background: var(--ink);
  color: var(--paper);
  padding: 10px 22px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.92rem;
  transition: background 0.2s;
}
.nav-cta:hover { background: var(--amber); color: var(--night); }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.hamburger span {
  width: 24px;
  height: 2px;
  background: var(--ink);
  border-radius: 2px;
}

/* ---------- Hero ---------- */
.hero {
  background: var(--night);
  color: var(--paper);
  padding: 64px 0 0;
  overflow: hidden;
}
.hero-bg-anim {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 80% 20%, rgba(217,162,75,0.18), transparent 50%),
    radial-gradient(circle at 10% 80%, rgba(126,140,121,0.15), transparent 50%);
  pointer-events: none;
}
.hero-inner {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 56px;
  align-items: center;
  position: relative;
  padding-bottom: 64px;
}
.hero-tag {
  display: inline-block;
  background: rgba(217, 162, 75, 0.15);
  color: var(--amber-soft);
  padding: 6px 16px;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 20px;
}
.hero h1 { color: var(--paper); }
.hero p { color: rgba(250, 246, 239, 0.78); }
.hero-actions { margin-top: 28px; }
.hero-trust {
  margin-top: 16px;
  font-size: 0.9rem;
  color: rgba(250, 246, 239, 0.6);
}
.hero-image { position: relative; }
.hero-glow {
  position: absolute;
  width: 360px;
  height: 360px;
  background: radial-gradient(circle, rgba(217,162,75,0.35), transparent 70%);
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  filter: blur(10px);
  z-index: 0;
}
.bottle-img { position: relative; z-index: 1; width: 100%; max-width: 420px; margin: 0 auto; }
.hero-badge {
  position: absolute;
  bottom: 12px;
  right: 12px;
  background: var(--paper);
  color: var(--ink);
  padding: 8px 16px;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 600;
  box-shadow: var(--shadow-soft);
  z-index: 2;
}
.hero-wave svg { display: block; width: 100%; height: 70px; }

/* ---------- Why Choose / Badges ---------- */
.why-choose { background: var(--paper); }
.badges-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}
.badge-card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 32px 24px;
  text-align: center;
}
.badge-icon { font-size: 2rem; margin-bottom: 12px; }
.badge-card h3 { font-size: 1.05rem; margin-bottom: 10px; }
.badge-card p { font-size: 0.92rem; }

/* ---------- What Is ---------- */
.what-is { background: var(--paper-dim); }
.what-is-inner {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 56px;
  align-items: center;
}
.what-is-img img { border-radius: var(--radius); }

/* ---------- How It Works (Accordion) ---------- */
.how-it-works { background: var(--paper); }
.accordion-list { max-width: 760px; margin: 0 auto; }
.accordion-item {
  border-bottom: 1px solid var(--line);
}
.accordion-btn {
  width: 100%;
  background: none;
  border: none;
  text-align: left;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 1.02rem;
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  color: var(--ink);
}
.acc-icon { color: var(--amber); font-size: 1.3rem; transition: transform 0.2s; }
.accordion-item.open .acc-icon { transform: rotate(45deg); }
.accordion-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}
.accordion-item.open .accordion-body { max-height: 400px; }
.accordion-body p { padding-bottom: 20px; }

/* ---------- Reviews ---------- */
.reviews { background: var(--paper-dim); }
.reviews-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
.review-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 28px;
  border: 1px solid var(--line);
}
.review-header { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.review-avatar-placeholder {
  width: 44px; height: 44px;
  border-radius: 50%;
  background: var(--ink);
  color: var(--paper);
  display: flex; align-items: center; justify-content: center;
  font-weight: 600;
  font-size: 0.85rem;
}
.review-header strong { display: block; font-size: 0.95rem; }
.review-header span { font-size: 0.8rem; color: var(--ink-soft); }
.stars { color: var(--amber); font-size: 0.85rem; }
.review-card p { font-size: 0.92rem; }

/* ---------- Pricing ---------- */
.pricing { background: var(--night); color: var(--paper); }
.pricing h2 { color: var(--paper); }
.pricing .section-sub { color: rgba(250,246,239,0.65); }
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  align-items: stretch;
}
.price-card {
  background: var(--night-soft);
  border: 1px solid var(--line-on-night);
  border-radius: var(--radius);
  padding: 36px 28px;
  text-align: center;
  position: relative;
  display: flex;
  flex-direction: column;
}
.price-card-featured {
  border-color: var(--amber);
  background: linear-gradient(160deg, var(--night-soft), rgba(217,162,75,0.08));
}
.price-badge {
  position: absolute;
  top: -14px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--amber);
  color: var(--night);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  padding: 6px 14px;
  border-radius: 999px;
}
.price-card h3 { color: var(--paper); }
.price-amount {
  font-family: var(--font-display);
  font-size: 2.6rem;
  color: var(--amber);
  margin: 8px 0 0;
}
.price-unit { color: rgba(250,246,239,0.6); font-size: 0.9rem; margin-bottom: 20px; }
.price-features {
  list-style: none;
  padding: 0;
  margin: 0 0 24px;
  text-align: left;
  font-size: 0.9rem;
  color: rgba(250,246,239,0.8);
  flex-grow: 1;
}
.price-features li { padding: 6px 0; }
.price-cta { width: 100%; justify-content: center; }

/* ---------- Bonus ---------- */
.bonus { background: var(--paper); }
.bonus-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  max-width: 880px;
  margin: 0 auto;
}
.bonus-card {
  background: var(--paper-dim);
  border-radius: var(--radius);
  padding: 32px;
}
.bonus-icon { font-size: 1.8rem; margin-bottom: 10px; }

/* ---------- Science ---------- */
.science { background: var(--paper-dim); }
.science-list {
  max-width: 760px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.science-item {
  background: #fff;
  border-left: 3px solid var(--sage);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 22px 26px;
}
.science-item h3 { font-size: 1.05rem; margin-bottom: 8px; }
.science-disclaimer {
  text-align: center;
  font-size: 0.82rem;
  color: var(--ink-soft);
  max-width: 640px;
  margin: 32px auto 0;
  font-style: italic;
}

/* ---------- Guarantee ---------- */
.guarantee { background: var(--paper); }
.guarantee-inner {
  display: grid;
  grid-template-columns: 0.7fr 1.3fr;
  gap: 56px;
  align-items: center;
}
.guarantee-img img { border-radius: var(--radius); }
.guarantee-points { display: flex; flex-direction: column; gap: 22px; margin-top: 24px; }
.g-point { display: flex; gap: 16px; align-items: flex-start; }
.g-icon { font-size: 1.6rem; }
.g-point h4 { font-size: 1rem; margin-bottom: 4px; }
.g-point p { font-size: 0.92rem; margin: 0; }

/* ---------- Benefits ---------- */
.benefits { background: var(--paper-dim); }
.benefits-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
  max-width: 920px;
  margin: 0 auto;
}
.benefit-item { display: flex; gap: 14px; align-items: flex-start; }
.benefit-item span { font-size: 1.3rem; }
.benefit-item h3 { font-size: 1.02rem; margin-bottom: 4px; }
.benefit-item p { font-size: 0.92rem; margin: 0; }

/* ---------- FAQ ---------- */
.faq { background: var(--paper); }
.faq-list { max-width: 760px; margin: 0 auto; }
.faq-item { border-bottom: 1px solid var(--line); }
.faq-btn {
  width: 100%;
  background: none;
  border: none;
  text-align: left;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 1.02rem;
  padding: 20px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  color: var(--ink);
}
.faq-icon { color: var(--amber); font-size: 1.3rem; transition: transform 0.2s; }
.faq-item.open .faq-icon { transform: rotate(45deg); }
.faq-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}
.faq-item.open .faq-body { max-height: 400px; }
.faq-body p { padding-bottom: 20px; font-size: 0.95rem; }

/* ---------- Final CTA ---------- */
.final-cta { background: var(--night); color: var(--paper); overflow: hidden; }
.final-cta-bg {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 70% 50%, rgba(217,162,75,0.15), transparent 60%);
}
.final-cta-inner {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 56px;
  align-items: center;
  position: relative;
}
.final-content h2 { color: var(--paper); text-align: left; }
.final-content p { color: rgba(250,246,239,0.75); }
.final-img { position: relative; }
.final-glow {
  position: absolute;
  width: 300px; height: 300px;
  background: radial-gradient(circle, rgba(217,162,75,0.3), transparent 70%);
  top: 50%; left: 50%;
  transform: translate(-50%,-50%);
  z-index: 0;
}
.final-bottle { position: relative; z-index: 1; max-width: 320px; margin: 0 auto; }
.final-price-display { margin: 20px 0; }
.final-new-price {
  font-family: var(--font-display);
  font-size: 1.6rem;
  color: var(--amber);
}
.final-trust-badges {
  display: flex;
  gap: 20px;
  margin-top: 20px;
  font-size: 0.85rem;
  color: rgba(250,246,239,0.6);
  flex-wrap: wrap;
}

/* ---------- Footer ---------- */
.footer { background: var(--ink); color: rgba(250,246,239,0.7); padding: 56px 0 24px; }
.footer-top {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 32px;
  padding-bottom: 32px;
  border-bottom: 1px solid rgba(250,246,239,0.12);
}
.footer-brand span {
  font-family: var(--font-display);
  font-size: 1.2rem;
  color: var(--paper);
  display: block;
  margin-bottom: 8px;
}
.footer-brand p { font-size: 0.88rem; max-width: 320px; }
.footer-links-col h4 { color: var(--paper); font-size: 0.95rem; margin-bottom: 12px; }
.footer-legal-links { display: flex; gap: 10px; flex-wrap: wrap; font-size: 0.88rem; }
.legal-link { color: rgba(250,246,239,0.7); }
.legal-link:hover { color: var(--amber); }
.link-separator { color: rgba(250,246,239,0.3); }
.footer-disclaimer { padding-top: 24px; font-size: 0.78rem; color: rgba(250,246,239,0.45); line-height: 1.7; }

/* ---------- Scroll to top ---------- */
.scroll-top {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--amber);
  color: var(--night);
  border: none;
  font-size: 1.1rem;
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
  z-index: 90;
  box-shadow: var(--shadow-soft);
}
.scroll-top.visible { opacity: 1; pointer-events: auto; }

/* ---------- Reveal animations ---------- */
.reveal-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
  transition-delay: var(--delay, 0s);
}
.reveal-up.visible { opacity: 1; transform: translateY(0); }
.fade-left { opacity: 0; transform: translateX(-24px); transition: opacity 0.7s, transform 0.7s; }
.fade-right { opacity: 0; transform: translateX(24px); transition: opacity 0.7s, transform 0.7s; }
.fade-left.visible, .fade-right.visible { opacity: 1; transform: translateX(0); }

@media (prefers-reduced-motion: reduce) {
  .reveal-up, .fade-left, .fade-right { transition: none; opacity: 1; transform: none; }
  .pulse-btn { animation: none; }
}

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .hero-inner, .what-is-inner, .guarantee-inner, .final-cta-inner {
    grid-template-columns: 1fr;
  }
  .badges-grid { grid-template-columns: repeat(2, 1fr); }
  .reviews-grid, .pricing-grid { grid-template-columns: 1fr; }
  .bonus-grid, .benefits-grid { grid-template-columns: 1fr; }
  .final-content h2 { text-align: center; }
}

@media (max-width: 720px) {
  .nav-menu {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--paper);
    flex-direction: column;
    padding: 20px 24px;
    gap: 18px;
    border-bottom: 1px solid var(--line);
    display: none;
  }
  .nav-menu.open { display: flex; }
  .hamburger { display: flex; }
  .badges-grid { grid-template-columns: 1fr; }
  section { padding: 56px 0; }
}