:root {
  --primary: #0d9488;
  --primary-dark: #0f766e;
  --primary-light: #ccfbf1;
  --primary-ultralight: #f0fdfa;
  --accent: #f59e0b;
  --accent-light: #fef3c7;
  --text-dark: #0f172a;
  --text-body: #334155;
  --text-muted: #64748b;
  --bg-light: #f8fafc;
  --bg-white: #ffffff;
  --border-color: #e2e8f0;
  --border-focus: #0d9488;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.08);
  --font-main: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --container-width: 1140px;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-main);
  color: var(--text-body);
  background-color: var(--bg-white);
  line-height: 1.65;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--primary-dark);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--primary);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius-md);
}

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

.container-narrow {
  max-width: 820px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Advisory Banner (Google Ads compliance) */
.advisory-bar {
  background: #f1f5f9;
  border-bottom: 1px solid var(--border-color);
  font-size: 0.82rem;
  color: var(--text-muted);
  padding: 8px 16px;
  text-align: center;
  line-height: 1.4;
}

.advisory-bar a {
  text-decoration: underline;
  color: var(--text-body);
}

/* Header & Navigation */
.site-header {
  background: var(--bg-white);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
}

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

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.28rem;
  font-weight: 700;
  color: var(--text-dark);
}

.brand-icon {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.brand span {
  color: var(--primary);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-links a {
  font-size: 0.94rem;
  font-weight: 500;
  color: var(--text-body);
  padding: 6px 0;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--primary);
  border-bottom: 2px solid var(--primary);
}

.header-cta {
  display: flex;
  align-items: center;
  gap: 12px;
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}

.mobile-nav {
  display: none;
  flex-direction: column;
  padding: 16px 20px;
  background: #ffffff;
  border-bottom: 1px solid var(--border-color);
}

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

.mobile-nav a {
  padding: 10px 0;
  border-bottom: 1px solid #f1f5f9;
  font-size: 0.98rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  padding: 11px 22px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.2s ease;
  font-size: 0.94rem;
  border: 1px solid transparent;
  text-align: center;
}

.btn-primary {
  background: var(--primary);
  color: #ffffff;
}

.btn-primary:hover {
  background: var(--primary-dark);
  color: #ffffff;
  box-shadow: 0 4px 12px rgba(13, 148, 136, 0.25);
}

.btn-outline {
  background: #ffffff;
  border: 1px solid var(--border-color);
  color: var(--text-dark);
}

.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-ultralight);
}

.btn-lg {
  padding: 14px 28px;
  font-size: 1.02rem;
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border-radius: 9999px;
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 14px;
}

.badge-green {
  background: var(--primary-light);
  color: var(--primary-dark);
}

.badge-amber {
  background: var(--accent-light);
  color: #92400e;
}

.badge-blue {
  background: #e0f2fe;
  color: #0369a1;
}

/* Hero Section */
.hero {
  padding: 60px 0 50px;
  background: linear-gradient(180deg, #f0fdfa 0%, #ffffff 100%);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items: center;
}

.hero h1 {
  font-size: 2.35rem;
  line-height: 1.25;
  color: var(--text-dark);
  margin-bottom: 18px;
  font-weight: 800;
}

.hero h1 span {
  color: var(--primary);
}

.hero-desc {
  font-size: 1.1rem;
  color: var(--text-body);
  margin-bottom: 24px;
}

.hero-features {
  display: flex;
  gap: 20px;
  font-size: 0.86rem;
  color: var(--text-muted);
  margin-top: 24px;
  flex-wrap: wrap;
}

.hero-image-wrap {
  position: relative;
}

.hero-image-wrap img {
  width: 100%;
  height: 420px;
  object-fit: cover;
  box-shadow: var(--shadow-lg);
}

.hero-doctor-badge {
  position: absolute;
  bottom: -15px;
  left: 20px;
  right: 20px;
  background: #ffffff;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.86rem;
}

.hero-doctor-badge strong {
  display: block;
  color: var(--text-dark);
  font-size: 0.92rem;
}

.hero-doctor-badge span {
  color: var(--text-muted);
}

/* Trust Bar */
.trust-bar {
  background: #ffffff;
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  padding: 24px 0;
}

.trust-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: 14px;
}

.trust-icon {
  font-size: 1.7rem;
}

.trust-item strong {
  display: block;
  font-size: 0.92rem;
  color: var(--text-dark);
}

.trust-item span {
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* Quiz Section */
.quiz-section {
  padding: 70px 0;
  background: var(--bg-light);
}

.section-head {
  text-align: center;
  margin-bottom: 36px;
}

.section-head h2 {
  font-size: 2rem;
  color: var(--text-dark);
  margin-bottom: 10px;
  font-weight: 700;
}

.section-head p {
  color: var(--text-muted);
  font-size: 1.05rem;
}

.quiz-card {
  background: #ffffff;
  border-radius: var(--radius-lg);
  padding: 36px;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-color);
}

.quiz-progress {
  height: 8px;
  background: #e2e8f0;
  border-radius: 9999px;
  overflow: hidden;
  margin-bottom: 24px;
}

.quiz-progress-bar {
  height: 100%;
  width: 20%;
  background: var(--primary);
  transition: width 0.3s ease;
}

.quiz-meta {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 14px;
}

.quiz-question {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-dark);
  margin-bottom: 20px;
}

.quiz-options {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 28px;
}

.quiz-opt {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  background: #f8fafc;
  border: 2px solid var(--border-color);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.15s ease;
  font-size: 0.98rem;
  color: var(--text-dark);
}

.quiz-opt:hover {
  background: var(--primary-ultralight);
  border-color: var(--primary);
}

.quiz-opt.selected {
  background: var(--primary-light);
  border-color: var(--primary);
  font-weight: 600;
}

.quiz-opt input {
  display: none;
}

.quiz-opt-circle {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 2px solid #cbd5e1;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.quiz-opt.selected .quiz-opt-circle {
  border-color: var(--primary);
  background: var(--primary);
}

.quiz-opt.selected .quiz-opt-circle::after {
  content: "";
  width: 8px;
  height: 8px;
  background: #ffffff;
  border-radius: 50%;
}

.quiz-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* Quiz Results */
.quiz-result {
  display: none;
  text-align: center;
}

.quiz-result.active {
  display: block;
}

.result-score-box {
  background: var(--primary-ultralight);
  border: 1px solid var(--primary-light);
  padding: 28px;
  border-radius: var(--radius-md);
  margin-bottom: 28px;
}

.result-percentage {
  font-size: 3.5rem;
  font-weight: 800;
  color: var(--primary-dark);
  line-height: 1;
  margin: 12px 0;
}

.download-box {
  background: #ffffff;
  border: 2px dashed var(--primary);
  border-radius: var(--radius-md);
  padding: 28px;
  margin: 24px 0;
  text-align: center;
}

.download-box h4 {
  font-size: 1.25rem;
  color: var(--text-dark);
  margin-bottom: 8px;
}

.download-box p {
  font-size: 0.92rem;
  color: var(--text-muted);
  margin-bottom: 18px;
}

/* Science & Details Sections */
.info-section {
  padding: 70px 0;
}

.info-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}

.info-content h2 {
  font-size: 2rem;
  color: var(--text-dark);
  margin-bottom: 18px;
  line-height: 1.3;
}

.info-content p {
  margin-bottom: 16px;
  color: var(--text-body);
}

.feature-list {
  list-style: none;
  margin: 20px 0;
}

.feature-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 14px;
  font-size: 0.96rem;
}

.feature-list .check {
  color: var(--primary);
  font-weight: bold;
  font-size: 1.1rem;
}

/* Ingredients Grid */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 36px;
}

.card-item {
  background: #ffffff;
  border: 1px solid var(--border-color);
  padding: 22px;
  border-radius: var(--radius-md);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card-item:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.card-item h4 {
  font-size: 1.1rem;
  color: var(--text-dark);
  margin-bottom: 4px;
}

.card-item .subtitle {
  display: block;
  font-size: 0.8rem;
  color: var(--primary-dark);
  font-weight: 600;
  margin-bottom: 10px;
}

.card-item p {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* FAQ Accordion */
.faq-section {
  padding: 60px 0;
  background: var(--bg-light);
}

.faq-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.faq-question {
  padding: 18px 22px;
  font-weight: 600;
  color: var(--text-dark);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  user-select: none;
}

.faq-question:hover {
  color: var(--primary);
}

.faq-icon {
  font-size: 0.85rem;
  transition: transform 0.2s ease;
}

.faq-item.open .faq-icon {
  transform: rotate(180deg);
}

.faq-answer {
  display: none;
  padding: 0 22px 20px;
  font-size: 0.94rem;
  color: var(--text-body);
  border-top: 1px solid #f1f5f9;
  padding-top: 14px;
}

.faq-item.open .faq-answer {
  display: block;
}

/* Medical Disclaimer Box */
.medical-box {
  background: #fffbeb;
  border: 1px solid #fde68a;
  border-left: 5px solid var(--accent);
  padding: 20px;
  border-radius: var(--radius-md);
  margin: 40px auto;
  max-width: 900px;
  font-size: 0.88rem;
  color: #78350f;
  line-height: 1.55;
}

.medical-box strong {
  display: block;
  margin-bottom: 6px;
  font-size: 0.94rem;
}

/* Footer */
.site-footer {
  background: #0f172a;
  color: #94a3b8;
  padding: 60px 0 30px;
  font-size: 0.9rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 36px;
  margin-bottom: 40px;
}

.footer-brand {
  color: #ffffff;
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 14px;
}

.footer-col h4 {
  color: #ffffff;
  font-size: 0.98rem;
  margin-bottom: 16px;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 10px;
}

.footer-links a {
  color: #94a3b8;
}

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

.footer-bottom {
  border-top: 1px solid #1e293b;
  padding-top: 24px;
  text-align: center;
  font-size: 0.82rem;
  color: #64748b;
}

/* Cookie Modal */
.cookie-banner {
  position: fixed;
  bottom: 20px;
  right: 20px;
  max-width: 420px;
  background: #ffffff;
  padding: 22px;
  border-radius: var(--radius-md);
  box-shadow: 0 10px 30px rgba(0,0,0,0.15);
  border: 1px solid var(--border-color);
  z-index: 999;
  display: none;
}

.cookie-banner.show {
  display: block;
}

.cookie-banner h4 {
  font-size: 1rem;
  color: var(--text-dark);
  margin-bottom: 8px;
}

.cookie-banner p {
  font-size: 0.84rem;
  color: var(--text-muted);
  margin-bottom: 16px;
}

/* Generic Page Styles (Articles, Legal, About) */
.page-header {
  padding: 40px 0;
  background: var(--bg-light);
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 40px;
}

.page-header h1 {
  font-size: 2.2rem;
  color: var(--text-dark);
  margin-bottom: 10px;
}

.page-header p {
  color: var(--text-muted);
  font-size: 1.05rem;
}

.legal-content {
  line-height: 1.8;
  color: var(--text-body);
}

.legal-content h2 {
  font-size: 1.4rem;
  color: var(--text-dark);
  margin: 32px 0 12px;
}

.legal-content h3 {
  font-size: 1.15rem;
  color: var(--text-dark);
  margin: 20px 0 8px;
}

.legal-content p, .legal-content ul {
  margin-bottom: 16px;
}

.legal-content ul {
  padding-left: 24px;
}

/* Form Styles */
.form-group {
  margin-bottom: 20px;
}

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

.form-input, .form-textarea, .form-select {
  width: 100%;
  padding: 11px 14px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.95rem;
  color: var(--text-dark);
  transition: border-color 0.2s ease;
}

.form-input:focus, .form-textarea:focus, .form-select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(13, 148, 136, 0.15);
}

/* Article Cards */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 50px;
}

.article-card {
  background: #ffffff;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  display: flex;
  flex-direction: column;
}

.article-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.article-card img {
  height: 200px;
  width: 100%;
  object-fit: cover;
  border-radius: 0;
}

.article-card-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.article-meta {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.article-card h3 {
  font-size: 1.15rem;
  color: var(--text-dark);
  margin-bottom: 10px;
  line-height: 1.4;
}

.article-card p {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 18px;
  flex-grow: 1;
}

/* Responsive */
@media (max-width: 992px) {
  .hero-grid, .info-grid {
    grid-template-columns: 1fr;
  }
  .cards-grid, .trust-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .articles-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .nav-links, .header-cta .btn {
    display: none;
  }
  .mobile-toggle {
    display: block;
  }
  .hero h1 {
    font-size: 1.85rem;
  }
  .cards-grid, .trust-grid, .articles-grid, .footer-grid {
    grid-template-columns: 1fr;
  }
  .cookie-banner {
    left: 20px;
    right: 20px;
    max-width: none;
  }
}