/* GlucoBalance Landing Page Styles */

/* CSS Variables */
:root {
  /* Colors - Natural Health Theme */
  --color-primary: #7BA05B;
  --color-primary-dark: #5A7A42;
  --color-primary-light: #9BC07B;
  --color-accent: #5B8FA0;
  --color-accent-light: #7BB0C0;
  --color-background: #F7F5F0;
  --color-background-alt: #FFFFFF;
  --color-foreground: #2D3B2D;
  --color-foreground-muted: #5A6B5A;
  --color-border: #E0DDD5;
  --color-card: #FDFCF9;
  
  /* Typography */
  --font-sans: 'Inter', system-ui, sans-serif;
  --font-serif: 'Source Serif 4', Georgia, serif;
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 0.75rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-full: 9999px;
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 300ms ease;
  --transition-slow: 500ms ease;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-foreground);
  background-color: var(--color-background);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

ul {
  list-style: none;
}

/* Container */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

/* Typography */
h1, h2, h3, h4 {
  font-family: var(--font-serif);
  font-weight: 600;
  line-height: 1.2;
  text-wrap: balance;
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.75rem, 4vw, 2.5rem); }
h3 { font-size: clamp(1.25rem, 3vw, 1.5rem); }
h4 { font-size: 1.125rem; }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-lg);
  font-size: 0.9375rem;
  font-weight: 500;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  white-space: nowrap;
}

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

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  transform: translateY(-1px);
}

.btn-secondary {
  background-color: var(--color-background-alt);
  color: var(--color-foreground);
  border: 1px solid var(--color-border);
}

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

.btn-accent {
  background-color: var(--color-accent);
  color: white;
}

.btn-accent:hover {
  background-color: var(--color-accent-light);
  transform: translateY(-1px);
}

.btn-lg {
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: 1rem;
}

.btn-xl {
  padding: var(--spacing-lg) var(--spacing-2xl);
  font-size: 1.125rem;
  border-radius: var(--radius-lg);
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background-color: rgba(247, 245, 240, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  transition: all var(--transition-normal);
}

.header.scrolled {
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-primary);
}

.nav {
  display: none;
  align-items: center;
  gap: var(--spacing-xl);
}

@media (min-width: 768px) {
  .nav {
    display: flex;
  }
}

.nav-link {
  font-size: 0.9375rem;
  color: var(--color-foreground-muted);
  transition: color var(--transition-fast);
}

.nav-link:hover {
  color: var(--color-primary);
}

.header-cta {
  display: none;
}

@media (min-width: 768px) {
  .header-cta {
    display: inline-flex;
  }
}

.mobile-menu-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  color: var(--color-foreground);
}

@media (min-width: 768px) {
  .mobile-menu-btn {
    display: none;
  }
}

.mobile-menu {
  display: none;
  flex-direction: column;
  padding: var(--spacing-lg);
  background-color: var(--color-background-alt);
  border-top: 1px solid var(--color-border);
}

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

@media (min-width: 768px) {
  .mobile-menu {
    display: none !important;
  }
}

.mobile-nav-link {
  display: block;
  padding: var(--spacing-md) 0;
  font-size: 1rem;
  color: var(--color-foreground);
  border-bottom: 1px solid var(--color-border);
}

.mobile-cta {
  margin-top: var(--spacing-lg);
  width: 100%;
}

/* Hero Section */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 120px var(--spacing-lg) var(--spacing-3xl);
  overflow: hidden;
}

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

.hero-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(247, 245, 240, 0.85) 0%,
    rgba(247, 245, 240, 0.95) 50%,
    rgba(247, 245, 240, 1) 100%
  );
}

.glucose-curve {
  position: absolute;
  bottom: 20%;
  left: 0;
  right: 0;
  width: 100%;
  height: 200px;
  z-index: 0;
  opacity: 0.5;
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-md);
  background-color: rgba(123, 160, 91, 0.1);
  color: var(--color-primary);
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: var(--radius-full);
  margin-bottom: var(--spacing-lg);
}

.hero-title {
  color: var(--color-foreground);
  margin-bottom: var(--spacing-lg);
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--color-foreground-muted);
  max-width: 600px;
  margin: 0 auto var(--spacing-xl);
  line-height: 1.7;
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  justify-content: center;
  margin-bottom: var(--spacing-2xl);
}

.hero-trust {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-lg);
  justify-content: center;
}

.trust-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: 0.875rem;
  color: var(--color-foreground-muted);
}

.trust-item svg {
  color: var(--color-primary);
}

.scroll-indicator {
  position: absolute;
  bottom: var(--spacing-xl);
  left: 50%;
  transform: translateX(-50%);
  color: var(--color-primary);
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
  40% { transform: translateX(-50%) translateY(-10px); }
  60% { transform: translateX(-50%) translateY(-5px); }
}

/* Section Styles */
.section {
  padding: var(--spacing-3xl) 0;
}

.section-header {
  text-align: center;
  max-width: 600px;
  margin: 0 auto var(--spacing-2xl);
}

.section-badge {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-md);
  background-color: rgba(123, 160, 91, 0.1);
  color: var(--color-primary);
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: var(--radius-full);
  margin-bottom: var(--spacing-md);
}

.section-title {
  color: var(--color-foreground);
  margin-bottom: var(--spacing-md);
}

.section-subtitle {
  color: var(--color-foreground-muted);
  font-size: 1.0625rem;
  line-height: 1.7;
}

/* Benefits Section */
.benefits {
  background-color: var(--color-background-alt);
}

.benefits-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
}

@media (min-width: 640px) {
  .benefits-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .benefits-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.benefit-card {
  padding: var(--spacing-xl);
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  text-align: center;
  transition: all var(--transition-normal);
}

.benefit-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(123, 160, 91, 0.1);
  border-color: var(--color-primary-light);
}

.benefit-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  background-color: rgba(123, 160, 91, 0.1);
  color: var(--color-primary);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-lg);
}

.benefit-card h3 {
  margin-bottom: var(--spacing-sm);
  color: var(--color-foreground);
}

.benefit-card p {
  font-size: 0.9375rem;
  color: var(--color-foreground-muted);
  line-height: 1.6;
}

/* How It Works Section */
.how-it-works {
  background-color: var(--color-background);
}

.steps-grid {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-lg);
}

@media (min-width: 768px) {
  .steps-grid {
    flex-direction: row;
    justify-content: center;
    gap: var(--spacing-md);
  }
}

.step-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: var(--spacing-xl);
  background-color: var(--color-background-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  max-width: 280px;
  width: 100%;
}

.step-number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  background-color: var(--color-primary);
  color: white;
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  margin-bottom: var(--spacing-lg);
}

.step-content h3 {
  margin-bottom: var(--spacing-sm);
  color: var(--color-foreground);
}

.step-content p {
  font-size: 0.9375rem;
  color: var(--color-foreground-muted);
}

.step-connector {
  display: none;
  color: var(--color-primary-light);
}

@media (min-width: 768px) {
  .step-connector {
    display: block;
  }
}

/* Doctor Section */
.doctor {
  background-color: var(--color-background-alt);
}

.doctor-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-2xl);
  align-items: center;
}

@media (min-width: 768px) {
  .doctor-grid {
    grid-template-columns: 1fr 1.2fr;
  }
}

.doctor-image-wrapper {
  position: relative;
}

.doctor-image {
  width: 100%;
  max-width: 400px;
  border-radius: var(--radius-xl);
  margin: 0 auto;
}

.doctor-badge {
  position: absolute;
  bottom: var(--spacing-lg);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-md);
  background-color: var(--color-background-alt);
  color: var(--color-primary);
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: var(--radius-full);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.doctor-content .section-badge {
  margin-bottom: var(--spacing-md);
}

.doctor-content .section-title {
  text-align: left;
  margin-bottom: var(--spacing-lg);
}

.doctor-quote {
  font-family: var(--font-serif);
  font-size: 1.125rem;
  font-style: italic;
  color: var(--color-foreground-muted);
  line-height: 1.7;
  padding-left: var(--spacing-lg);
  border-left: 3px solid var(--color-primary);
  margin-bottom: var(--spacing-xl);
}

.doctor-info {
  margin-bottom: var(--spacing-xl);
}

.doctor-info strong {
  display: block;
  font-size: 1.125rem;
  color: var(--color-foreground);
  margin-bottom: var(--spacing-xs);
}

.doctor-info span {
  font-size: 0.9375rem;
  color: var(--color-foreground-muted);
}

.doctor-stats {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xl);
}

.stat {
  display: flex;
  flex-direction: column;
}

.stat-number {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-primary);
}

.stat-label {
  font-size: 0.875rem;
  color: var(--color-foreground-muted);
}

/* Ingredients Section */
.ingredients {
  background-color: var(--color-background);
}

.ingredients-image {
  max-width: 800px;
  margin: 0 auto var(--spacing-2xl);
  border-radius: var(--radius-xl);
  overflow: hidden;
}

.herbs-img {
  width: 100%;
  height: 300px;
  object-fit: cover;
}

.ingredients-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
}

@media (min-width: 640px) {
  .ingredients-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .ingredients-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.ingredient-card {
  display: flex;
  gap: var(--spacing-md);
  padding: var(--spacing-lg);
  background-color: var(--color-background-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: all var(--transition-normal);
}

.ingredient-card:hover {
  border-color: var(--color-primary-light);
  box-shadow: 0 8px 30px rgba(123, 160, 91, 0.08);
}

.ingredient-icon {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background-color: rgba(123, 160, 91, 0.1);
  color: var(--color-primary);
  border-radius: var(--radius-md);
}

.ingredient-card h4 {
  font-family: var(--font-serif);
  margin-bottom: var(--spacing-xs);
  color: var(--color-foreground);
}

.ingredient-card p {
  font-size: 0.875rem;
  color: var(--color-foreground-muted);
  line-height: 1.5;
}

/* Testimonials Section */
.testimonials {
  background-color: var(--color-background-alt);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-lg);
}

@media (min-width: 640px) {
  .testimonials-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .testimonials-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.testimonial-card {
  padding: var(--spacing-xl);
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: all var(--transition-normal);
}

.testimonial-card:hover {
  border-color: var(--color-primary-light);
  box-shadow: 0 8px 30px rgba(123, 160, 91, 0.08);
}

.testimonial-stars {
  display: flex;
  gap: 2px;
  color: #F5A623;
  margin-bottom: var(--spacing-md);
}

.testimonial-text {
  font-size: 0.9375rem;
  color: var(--color-foreground);
  line-height: 1.6;
  margin-bottom: var(--spacing-lg);
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.author-avatar {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background-color: var(--color-primary);
  color: white;
  font-weight: 600;
  font-size: 0.875rem;
  border-radius: var(--radius-full);
}

.author-info strong {
  display: block;
  font-size: 0.9375rem;
  color: var(--color-foreground);
}

.author-info span {
  font-size: 0.8125rem;
  color: var(--color-foreground-muted);
}

/* FAQ Section */
.faq {
  background-color: var(--color-background);
}

.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-md);
  background-color: var(--color-background-alt);
  overflow: hidden;
}

.faq-question {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: var(--spacing-lg);
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-foreground);
  text-align: left;
  transition: color var(--transition-fast);
}

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

.faq-question svg {
  flex-shrink: 0;
  color: var(--color-foreground-muted);
  transition: transform var(--transition-fast);
}

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

.faq-answer {
  display: none;
  padding: 0 var(--spacing-lg) var(--spacing-lg);
}

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

.faq-answer p {
  font-size: 0.9375rem;
  color: var(--color-foreground-muted);
  line-height: 1.6;
}

/* CTA Section */
.cta-section {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  padding: var(--spacing-3xl) 0;
}

.cta-card {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-2xl);
  padding: var(--spacing-2xl);
  background-color: var(--color-background-alt);
  border-radius: var(--radius-xl);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
}

@media (min-width: 768px) {
  .cta-card {
    grid-template-columns: 1.5fr 1fr;
    align-items: center;
  }
}

.cta-content {
  text-align: center;
}

@media (min-width: 768px) {
  .cta-content {
    text-align: left;
  }
}

.cta-title {
  font-size: clamp(1.5rem, 3vw, 2rem);
  color: var(--color-foreground);
  margin-bottom: var(--spacing-md);
}

.cta-text {
  font-size: 1.0625rem;
  color: var(--color-foreground-muted);
  margin-bottom: var(--spacing-xl);
}

.cta-price {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  justify-content: center;
  margin-bottom: var(--spacing-lg);
}

@media (min-width: 768px) {
  .cta-price {
    justify-content: flex-start;
  }
}

.price-old {
  font-size: 1.25rem;
  color: var(--color-foreground-muted);
  text-decoration: line-through;
}

.price-new {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 600;
  color: var(--color-primary);
}

.price-badge {
  padding: var(--spacing-xs) var(--spacing-sm);
  background-color: #E53E3E;
  color: white;
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
}

.cta-note {
  margin-top: var(--spacing-md);
  font-size: 0.875rem;
  color: var(--color-foreground-muted);
}

.cta-trust {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  padding: var(--spacing-lg);
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}

.trust-badge {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  font-size: 0.9375rem;
  color: var(--color-foreground);
}

.trust-badge svg {
  flex-shrink: 0;
  color: var(--color-primary);
}

/* Footer */
.footer {
  background-color: var(--color-foreground);
  color: rgba(255, 255, 255, 0.8);
  padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-2xl);
}

@media (min-width: 640px) {
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1.5fr 1fr 1fr 1fr;
  }
}

.footer-brand .logo {
  color: white;
  margin-bottom: var(--spacing-md);
}

.footer-desc {
  font-size: 0.9375rem;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.6);
}

.footer-links h4,
.footer-contact h4 {
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 600;
  color: white;
  margin-bottom: var(--spacing-lg);
}

.footer-links ul {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.footer-links a {
  font-size: 0.9375rem;
  color: rgba(255, 255, 255, 0.6);
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: white;
}

.footer-contact p {
  font-size: 0.9375rem;
  margin-bottom: var(--spacing-sm);
}

.footer-contact a {
  color: rgba(255, 255, 255, 0.6);
  transition: color var(--transition-fast);
}

.footer-contact a:hover {
  color: white;
}

.footer-disclaimer {
  padding: var(--spacing-lg);
  background-color: rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-xl);
}

.footer-disclaimer p {
  font-size: 0.8125rem;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.5);
}

.footer-disclaimer strong {
  color: rgba(255, 255, 255, 0.7);
}

.footer-bottom {
  padding-top: var(--spacing-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
}

.footer-bottom p {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.5);
}

/* Utility Classes */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}