/* =====================
   RESET & BASE
   ===================== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --green:   #635BFF;
  --green-dark: #4F46E5;
  --green-light: #EEF2FF;
  --yellow:  #f59e0b;
  --red:     #ef4444;
  --gray-50: #F6F9FC;
  --gray-100:#f3f4f6;
  --gray-200:#e5e7eb;
  --gray-500:#6b7280;
  --gray-700:#425466;
  --gray-900:#0A2540;
  --white:   #ffffff;
  --radius:  12px;
  --shadow:  0 4px 24px rgba(99,91,255,.10);
  --font:    'Inter', system-ui, sans-serif;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  color: var(--gray-900);
  background: var(--white);
  line-height: 1.6;
  font-size: 16px;
}

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

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
}

/* =====================
   HEADER
   ===================== */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--white);
  border-bottom: 1px solid var(--gray-200);
  padding: 14px 0;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.logo {
  font-size: 1.3rem;
  font-weight: 800;
  color: var(--green);
  white-space: nowrap;
}

.nav {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}

.nav a {
  font-size: .9rem;
  font-weight: 500;
  color: var(--gray-700);
  transition: color .2s;
}

.nav a:hover { color: var(--green); }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.4rem;
  cursor: pointer;
  color: var(--gray-700);
}

@media (max-width: 680px) {
  .nav-toggle { display: block; }
  .nav {
    display: none;
    position: absolute;
    top: 60px; left: 0; right: 0;
    background: var(--white);
    flex-direction: column;
    gap: 0;
    border-top: 1px solid var(--gray-200);
    padding: 8px 20px 16px;
    box-shadow: var(--shadow);
  }
  .nav.open { display: flex; }
  .nav a { padding: 10px 0; border-bottom: 1px solid var(--gray-100); }
}

/* =====================
   HERO
   ===================== */
.hero {
  background: linear-gradient(135deg, #f5f3ff 0%, #ede9fe 50%, #ddd6fe 100%);
  padding: 80px 0 70px;
  text-align: center;
}

.hero-label {
  display: inline-block;
  background: var(--green);
  color: var(--white);
  font-size: .78rem;
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
  padding: 4px 12px;
  border-radius: 100px;
  margin-bottom: 20px;
}

.hero h1 {
  font-size: clamp(1.8rem, 5vw, 3rem);
  font-weight: 800;
  line-height: 1.2;
  color: var(--gray-900);
  max-width: 680px;
  margin: 0 auto 20px;
}

.hero-sub {
  color: var(--gray-700);
  max-width: 560px;
  margin: 0 auto 32px;
  font-size: 1.05rem;
}

/* =====================
   BUTTONS
   ===================== */
.btn {
  display: inline-block;
  padding: 12px 28px;
  border-radius: 8px;
  font-weight: 600;
  font-size: .95rem;
  transition: all .2s;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--green);
  color: var(--white);
  box-shadow: 0 4px 14px rgba(99,91,255,.40);
}

.btn-primary:hover {
  background: var(--green-dark);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(99,91,255,.50);
}

.btn-amazon {
  background: #ff9900;
  color: #111;
  font-weight: 700;
  width: 100%;
  text-align: center;
  padding: 11px 16px;
  border-radius: 8px;
  font-size: .9rem;
  display: block;
  transition: background .2s, transform .15s;
}

.btn-amazon:hover {
  background: #e68900;
  transform: translateY(-1px);
}

/* =====================
   TRUST BAR
   ===================== */
.trust-bar {
  background: var(--green);
  padding: 16px 0;
}

.trust-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
}

.trust-item {
  color: var(--white);
  font-weight: 600;
  font-size: .9rem;
}

/* =====================
   SECTIONS
   ===================== */
.section { padding: 72px 0; }
.bg-light { background: var(--gray-50); }

.section-title {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 800;
  text-align: center;
  margin-bottom: 10px;
}

.section-sub {
  text-align: center;
  color: var(--gray-500);
  margin-bottom: 44px;
  font-size: .95rem;
}

/* =====================
   PRODUCT CARDS
   ===================== */
.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 28px;
}

.product-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform .2s, box-shadow .2s;
}

.product-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 36px rgba(0,0,0,.12);
}

.card-badge-wrap {
  position: relative;
}

.card-img {
  width: 100%;
  height: 200px;
  object-fit: contain;
  background: var(--gray-50);
  padding: 16px;
}

.badge {
  position: absolute;
  top: 12px;
  left: 12px;
  font-size: .72rem;
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 100px;
  text-transform: uppercase;
  letter-spacing: .04em;
}

.badge-best    { background: var(--yellow); color: #78350f; }
.badge-premium { background: #7c3aed; color: #fff; }
.badge-value   { background: var(--green); color: #fff; }

.badge-new     { background: var(--red); color: #fff; }

.card-body {
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  flex: 1;
  gap: 10px;
}

.card-brand {
  font-size: .78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--green);
}

.card-title {
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.35;
  color: var(--gray-900);
}

.card-stars {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: .85rem;
}

.stars { color: var(--yellow); letter-spacing: 1px; }
.review-count { color: var(--gray-500); }

.card-price {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--gray-900);
}

.card-price .per-serving {
  font-size: .78rem;
  font-weight: 400;
  color: var(--gray-500);
}

.card-highlights {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.card-highlights li {
  font-size: .83rem;
  color: var(--gray-700);
}

.card-highlights li::before {
  content: "✓ ";
  color: var(--green);
  font-weight: 700;
}

.card-cert {
  font-size: .78rem;
  color: var(--gray-500);
  margin-top: auto;
}

.card-cert span {
  background: var(--green-light);
  color: var(--green-dark);
  padding: 2px 8px;
  border-radius: 100px;
  font-weight: 600;
}

/* =====================
   BUYING GUIDE GRID
   ===================== */
.guide-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.guide-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 28px 24px;
  box-shadow: var(--shadow);
}

.guide-icon {
  font-size: 2rem;
  margin-bottom: 12px;
}

.guide-card h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.guide-card p {
  font-size: .88rem;
  color: var(--gray-700);
  line-height: 1.6;
}

/* =====================
   FAQ
   ===================== */
.faq-container { max-width: 720px; }

.faq-item {
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  margin-bottom: 12px;
  overflow: hidden;
}

.faq-item summary {
  padding: 18px 20px;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--white);
  transition: background .15s;
}

.faq-item summary:hover { background: var(--gray-50); }

.faq-item summary::after {
  content: "＋";
  font-size: 1.1rem;
  color: var(--green);
  flex-shrink: 0;
}

.faq-item[open] summary::after { content: "−"; }

.faq-item p {
  padding: 0 20px 18px;
  color: var(--gray-700);
  font-size: .9rem;
  line-height: 1.7;
}

/* =====================
   DISCLOSURE BANNER
   ===================== */
.disclosure-banner {
  background: var(--gray-100);
  border-top: 1px solid var(--gray-200);
  padding: 14px 0;
  font-size: .82rem;
  color: var(--gray-700);
  text-align: center;
}

.disclosure-banner a {
  color: var(--green);
  font-weight: 600;
}

/* =====================
   FOOTER
   ===================== */
.footer {
  background: var(--gray-900);
  color: var(--gray-200);
  padding: 48px 0 24px;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 24px;
  margin-bottom: 32px;
}

.footer .logo { color: #a78bfa; font-size: 1.2rem; }

.footer-tagline {
  margin-top: 6px;
  font-size: .85rem;
  color: var(--gray-500);
}

.footer-links {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
  align-items: flex-start;
}

.footer-links a {
  font-size: .88rem;
  color: var(--gray-200);
  transition: color .2s;
}

.footer-links a:hover { color: #a78bfa; }

.footer-copy {
  border-top: 1px solid #374151;
  padding-top: 20px;
}

.footer-copy p {
  font-size: .78rem;
  color: var(--gray-500);
  text-align: center;
}

/* =====================
   ABOUT / DISCLOSURE PAGE
   ===================== */
.page-hero {
  background: linear-gradient(135deg, #f5f3ff, #ede9fe);
  padding: 60px 0 48px;
  text-align: center;
}

.page-hero h1 { font-size: clamp(1.6rem, 4vw, 2.4rem); font-weight: 800; }
.page-hero p  { color: var(--gray-700); margin-top: 12px; max-width: 560px; margin-left: auto; margin-right: auto; }

.prose {
  max-width: 740px;
  margin: 0 auto;
  padding: 56px 20px;
  color: var(--gray-700);
  line-height: 1.8;
}

.prose h2 {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--gray-900);
  margin: 36px 0 10px;
}

.prose p  { margin-bottom: 16px; }
.prose ul { margin: 12px 0 16px 20px; }
.prose ul li { margin-bottom: 6px; }
.prose a  { color: var(--green); font-weight: 600; }