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

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&display=swap');

:root {
  --primary: #15427e;
  --primary-dark: #0e2f5a;
  --primary-light: #1a5298;
  --accent: #f3f4f6;
  --dark: #111827;
  --gray: #6B7280;
  --light-gray: #F9FAFB;
  --border: #e5e7eb;
  --white: #FFFFFF;
  --radius: 16px;
  --shadow: 0 4px 24px rgba(0,0,0,0.08);
  --max-width: 1200px;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  color: var(--dark);
  line-height: 1.6;
  background: var(--white);
}

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

.container {
  width: 90%;
  max-width: var(--max-width);
  margin: 0 auto;
}

/* ===== ANNOUNCEMENT BAR ===== */
.announcement-bar {
  background: var(--primary);
  color: var(--white);
  text-align: center;
  padding: 10px 0;
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.3px;
}

.announcement-bar a {
  color: var(--white);
  text-decoration: underline;
  margin-left: 8px;
  font-weight: 600;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-block;
  padding: 14px 32px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all 0.3s ease;
  border: none;
  letter-spacing: 0.2px;
}

.btn-primary {
  background: var(--primary);
  color: var(--white);
}
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); }

.btn-white {
  background: var(--white);
  color: var(--dark);
}
.btn-white:hover { background: #f3f4f6; transform: translateY(-2px); }

.btn-secondary {
  background: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}
.btn-secondary:hover { background: var(--primary); color: var(--white); }

.btn-accent {
  background: var(--white);
  color: var(--dark);
}
.btn-accent:hover { background: #f3f4f6; transform: translateY(-2px); }

.btn-outline-white {
  background: transparent;
  color: var(--white);
  border: 2px solid var(--white);
}
.btn-outline-white:hover { background: var(--white); color: var(--dark); }

/* ===== HEADER / NAV ===== */
header {
  position: sticky;
  top: 0;
  background: var(--white);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: -0.5px;
}
.logo span { color: var(--dark); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--gray);
  transition: color 0.2s;
}
.nav-links a:hover,
.nav-links a.active { color: var(--primary); }

.nav-cta {
  padding: 10px 24px !important;
  font-size: 0.9rem !important;
  color: var(--white) !important;
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}
.hamburger span {
  width: 24px;
  height: 2.5px;
  background: var(--dark);
  border-radius: 2px;
  transition: all 0.3s;
}

/* ===== HERO BANNER ===== */
.hero-banner {
  position: relative;
  min-height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
  background: #0a0a0a;
}

.hero-banner-bg {
  position: absolute;
  inset: 0;
  z-index: 1;
}

.hero-banner-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.5;
}

.hero-banner-content {
  position: relative;
  z-index: 2;
  max-width: 820px;
  padding: 80px 20px;
  color: var(--white);
}

.hero-banner-content .hero-subtitle {
  font-size: 0.9rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 3px;
  margin-bottom: 20px;
  opacity: 0.85;
}

.hero-banner-content h1 {
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 20px;
  letter-spacing: -1px;
}

.hero-banner-content .hero-desc {
  font-size: 1.2rem;
  opacity: 0.75;
  font-weight: 300;
  margin-bottom: 36px;
}

/* ===== BANNER CARDS ===== */
.banner-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.banner-card {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  min-height: 400px;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 48px 40px;
}

.banner-card-bg {
  position: absolute;
  inset: 0;
  z-index: 1;
}

.banner-card-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.banner-card-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.45);
  z-index: 2;
}

.banner-card-content {
  position: relative;
  z-index: 3;
  color: var(--white);
}

.banner-card-content .banner-label {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 12px;
  opacity: 0.85;
}

.banner-card-content h3 {
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 12px;
  letter-spacing: -0.3px;
}

.banner-card-content p {
  font-size: 1rem;
  opacity: 0.75;
  font-weight: 300;
  margin-bottom: 24px;
}

.banner-card-content .btn {
  padding: 12px 28px;
  font-size: 0.85rem;
}

/* ===== SECTIONS ===== */
section { padding: 80px 0; }

.section-label {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--primary);
  margin-bottom: 12px;
}

.section-title {
  font-size: 2.2rem;
  font-weight: 800;
  margin-bottom: 16px;
  color: var(--dark);
  letter-spacing: -0.5px;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--gray);
  max-width: 600px;
  margin-bottom: 48px;
}

.text-center { text-align: center; }
.text-center .section-subtitle { margin-left: auto; margin-right: auto; }

/* ===== MODULE HEADER (like reference site) ===== */
.module-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 0 40px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 40px;
  gap: 24px;
}

.module-header h3 {
  font-size: 1.8rem;
  font-weight: 800;
  letter-spacing: -0.5px;
}

.module-header p {
  font-size: 1rem;
  color: var(--gray);
  max-width: 400px;
  text-align: right;
}

/* ===== FEATURE BANNER (video/image with overlay) ===== */
.feature-banner {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  min-height: 500px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  background: #f3f4f6;
}

.feature-banner-bg {
  position: absolute;
  inset: 0;
  z-index: 1;
}

.feature-banner-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.9;
}

.feature-banner-content {
  position: relative;
  z-index: 2;
  max-width: 600px;
  padding: 60px 20px;
  color: var(--dark);
}

.feature-banner.dark-overlay .feature-banner-bg img { opacity: 0.2; }
.feature-banner.dark-overlay { background: #0a0a0a; }
.feature-banner.dark-overlay .feature-banner-content { color: var(--white); }

.feature-banner-content .feature-label {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 16px;
  opacity: 0.85;
}

.feature-banner-content h2 {
  font-size: 2.4rem;
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}

.feature-banner-content p {
  font-size: 1.1rem;
  opacity: 0.75;
  font-weight: 300;
  margin-bottom: 32px;
  line-height: 1.7;
}

/* ===== TRUST BAR ===== */
.trust-bar {
  padding: 40px 0;
  background: var(--white);
  border-bottom: 1px solid var(--border);
}

.trust-items {
  display: flex;
  justify-content: center;
  gap: 48px;
  flex-wrap: wrap;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 12px;
}

.trust-icon {
  width: 44px;
  height: 44px;
  background: var(--light-gray);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
  color: var(--primary);
}

.trust-text { text-align: left; }

.trust-text strong {
  display: block;
  font-size: 0.95rem;
  color: var(--dark);
}

.trust-text span {
  font-size: 0.8rem;
  color: var(--gray);
}

/* ===== CARDS GRID ===== */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  transition: all 0.3s ease;
}
.card:hover { box-shadow: var(--shadow); transform: translateY(-4px); }

.card-icon {
  width: 56px;
  height: 56px;
  background: #dbeafe;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  margin-bottom: 20px;
  color: var(--primary);
}

.card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.card p {
  font-size: 0.95rem;
  color: var(--gray);
  line-height: 1.7;
}

/* ===== PRODUCT CARDS ===== */
.product-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all 0.3s ease;
}
.product-card:hover { box-shadow: var(--shadow); transform: translateY(-4px); }

.product-image {
  height: 220px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--light-gray);
}

.product-img {
  max-height: 100%;
  max-width: 80%;
  object-fit: contain;
}

.product-image.peptide-bg {
  background: linear-gradient(135deg, #1e293b, #334155);
}

.product-image.research-bg {
  background: linear-gradient(135deg, #15427e, #1a5298);
}

.product-body {
  padding: 24px;
}

.product-tag {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.tag-featured {
  background: #dbeafe;
  color: #1e40af;
}
.tag-popular {
  background: #e0e7ff;
  color: #3730a3;
}
.tag-new {
  background: #d1fae5;
  color: #065f46;
}

.product-body h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.product-body p {
  font-size: 0.9rem;
  color: var(--gray);
  margin-bottom: 16px;
  line-height: 1.6;
}

.product-meta {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.btn-sm {
  padding: 10px 20px;
  font-size: 0.85rem;
}

/* ===== STEPS ===== */
.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 32px;
}

.step {
  text-align: center;
  padding: 32px 24px;
}

.step-number {
  width: 52px;
  height: 52px;
  background: var(--primary);
  color: var(--white);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  font-weight: 800;
  margin: 0 auto 20px;
}

.step h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.step p {
  font-size: 0.9rem;
  color: var(--gray);
}

/* ===== FAQ ACCORDION ===== */
.faq-list {
  max-width: 720px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--border);
}

.faq-question {
  width: 100%;
  background: none;
  border: none;
  padding: 20px 0;
  text-align: left;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--dark);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  font-family: inherit;
}

.faq-question::after {
  content: '+';
  font-size: 1.4rem;
  color: var(--primary);
  font-weight: 300;
  flex-shrink: 0;
  transition: transform 0.3s;
}

.faq-item.open .faq-question::after { content: '-'; }

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.faq-answer p {
  padding: 0 0 20px;
  font-size: 0.95rem;
  color: var(--gray);
  line-height: 1.7;
}

/* ===== CTA SECTION ===== */
.cta-section {
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  color: var(--white);
  text-align: center;
  border-radius: var(--radius);
  padding: 60px 40px;
  margin: 0 auto;
  max-width: var(--max-width);
}

.cta-section h2 {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 16px;
}

.cta-section p {
  font-size: 1.05rem;
  opacity: 0.9;
  margin-bottom: 32px;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

/* ===== CONTACT FORM ===== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.form-group { margin-bottom: 20px; }

.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--dark);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid #d1d5db;
  border-radius: 8px;
  font-size: 0.95rem;
  font-family: inherit;
  transition: border-color 0.2s;
  background: var(--white);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
}

.form-group textarea { resize: vertical; min-height: 120px; }

.contact-info-card {
  background: var(--light-gray);
  border-radius: var(--radius);
  padding: 32px;
  margin-bottom: 24px;
}

.contact-info-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.contact-info-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 16px;
}

.contact-info-item:last-child { margin-bottom: 0; }

.contact-info-icon {
  width: 36px;
  height: 36px;
  background: var(--white);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--primary);
  font-size: 0.95rem;
}

.contact-info-item p {
  font-size: 0.9rem;
  color: var(--gray);
}
.contact-info-item strong {
  color: var(--dark);
  display: block;
  margin-bottom: 2px;
}

/* ===== ICON BOX BAR (bottom features) ===== */
.icon-box-bar {
  border-top: 1px solid var(--border);
  padding: 60px 0;
}

.icon-box-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}

.icon-box {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.icon-box-icon {
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  color: var(--primary);
}

.icon-box h4 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.icon-box p {
  font-size: 0.85rem;
  color: var(--gray);
  line-height: 1.5;
}

/* ===== FOOTER ===== */
footer {
  background: var(--dark);
  color: #9ca3af;
  padding: 60px 0 30px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.footer-brand .logo { margin-bottom: 16px; }
.footer-brand .logo span { color: var(--white); }

.footer-brand p {
  font-size: 0.9rem;
  line-height: 1.7;
  max-width: 280px;
}

.footer-col h4 {
  color: var(--white);
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.footer-col a {
  display: block;
  font-size: 0.9rem;
  margin-bottom: 10px;
  transition: color 0.2s;
}
.footer-col a:hover { color: var(--white); }

.footer-disclaimer {
  font-size: 0.8rem;
  line-height: 1.6;
  margin-top: 16px;
  opacity: 0.7;
}

.footer-bottom {
  border-top: 1px solid #374151;
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  flex-wrap: wrap;
  gap: 12px;
}

/* ===== PAGE HEADER ===== */
.page-header {
  padding: 60px 0 40px;
  background: var(--light-gray);
  text-align: center;
}

.page-header h1 {
  font-size: 2.4rem;
  font-weight: 800;
  margin-bottom: 12px;
  letter-spacing: -0.5px;
}

.page-header p {
  font-size: 1.05rem;
  color: var(--gray);
  max-width: 520px;
  margin: 0 auto;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .hamburger { display: flex; }

  .nav-links {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--white);
    flex-direction: column;
    padding: 24px;
    gap: 20px;
    border-bottom: 1px solid var(--border);
    box-shadow: 0 8px 24px rgba(0,0,0,0.1);
  }

  .nav-links.open { display: flex; }

  .hero-banner { min-height: 400px; }
  .hero-banner-content h1 { font-size: 2.2rem; }
  .hero-banner-content { padding: 60px 20px; }

  .banner-grid { grid-template-columns: 1fr; }
  .banner-card { min-height: 300px; }

  .section-title { font-size: 1.8rem; }

  .trust-items { gap: 24px; }

  .module-header {
    flex-direction: column;
    text-align: center;
  }
  .module-header p { text-align: center; }

  .feature-banner { min-height: 400px; }
  .feature-banner-content h2 { font-size: 1.8rem; }

  .icon-box-grid { grid-template-columns: 1fr 1fr; }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }

  .contact-grid { grid-template-columns: 1fr; }

  .footer-bottom { flex-direction: column; text-align: center; }

  .cta-section { margin: 0 16px; padding: 40px 24px; }
}

@media (max-width: 480px) {
  .hero-banner-content h1 { font-size: 1.8rem; }
  .trust-items { flex-direction: column; align-items: center; }
  .footer-grid { grid-template-columns: 1fr; }
  .icon-box-grid { grid-template-columns: 1fr; }
  .banner-card { min-height: 260px; padding: 32px 24px; }
}