/* ========================================
   LifeHealthy24 - Design System
   ======================================== */

/* --- CSS Variables --- */
:root {
  /* Colors */
  --color-primary: #2D7D46;
  --color-primary-dark: #1E5C32;
  --color-primary-light: #E8F5E9;
  --color-accent: #D4A853;
  --color-accent-dark: #B8923F;
  --color-text: #333333;
  --color-text-light: #666666;
  --color-text-muted: #999999;
  --color-bg: #FFFFFF;
  --color-bg-alt: #F8F9FA;
  --color-bg-dark: #1A1A2E;
  --color-border: #E0E0E0;
  --color-star: #F4C430;
  --color-danger: #E74C3C;
  --color-success: #27AE60;

  /* Typography */
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-heading: 'Playfair Display', Georgia, serif;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;

  /* Border Radius */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 50%;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
  --shadow-lg: 0 8px 30px rgba(0,0,0,0.12);
  --shadow-hover: 0 8px 25px rgba(45,125,70,0.15);

  /* Transitions */
  --transition: 0.3s ease;

  /* Container */
  --container-max: 1200px;
  --container-padding: 1.25rem;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition);
}

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

ul, ol {
  list-style: none;
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--color-text);
  line-height: 1.3;
  font-weight: 700;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

p {
  margin-bottom: var(--space-md);
  color: var(--color-text-light);
}

/* --- Layout --- */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.section {
  padding: var(--space-3xl) 0;
}

.section-alt {
  background: var(--color-bg-alt);
}

.section-title {
  text-align: center;
  margin-bottom: var(--space-2xl);
}

.section-title h2 {
  margin-bottom: var(--space-sm);
}

.section-title p {
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto;
}

/* --- Grid --- */
.grid {
  display: grid;
  gap: var(--space-lg);
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* --- Header / Navbar --- */
.header {
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: var(--shadow-sm);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) 0;
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: var(--container-padding);
  padding-right: var(--container-padding);
}

.nav-logo {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.nav-logo span {
  color: var(--color-accent);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.nav-links a {
  color: var(--color-text);
  font-weight: 500;
  font-size: 0.95rem;
  position: relative;
  padding: var(--space-xs) 0;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary);
  transition: width var(--transition);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-sm);
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  margin: 5px 0;
  transition: var(--transition);
}

/* --- Hero --- */
.hero {
  background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-bg) 50%, #FFF8E7 100%);
  padding: var(--space-3xl) 0;
  text-align: center;
}

.hero h1 {
  font-size: 3rem;
  margin-bottom: var(--space-md);
  color: var(--color-text);
}

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

.hero p {
  font-size: 1.2rem;
  max-width: 650px;
  margin: 0 auto var(--space-xl);
}

/* --- Search Bar --- */
.search-bar {
  max-width: 500px;
  margin: 0 auto;
  position: relative;
}

.search-bar input {
  width: 100%;
  padding: var(--space-md) var(--space-xl);
  padding-right: 50px;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-lg);
  font-family: var(--font-body);
  font-size: 1rem;
  outline: none;
  transition: border-color var(--transition);
}

.search-bar input:focus {
  border-color: var(--color-primary);
}

.search-bar button {
  position: absolute;
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
  background: var(--color-primary);
  color: white;
  border: none;
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  cursor: pointer;
  transition: background var(--transition);
}

.search-bar button:hover {
  background: var(--color-primary-dark);
}

/* --- Product Card --- */
.product-card {
  background: var(--color-bg);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition), box-shadow var(--transition);
  border: 1px solid var(--color-border);
}

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

.product-card-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  background: var(--color-bg-alt);
  display: flex;
  aspect-ratio: 1 / 1;
  contain: layout;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.product-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.product-card-body {
  padding: var(--space-lg);
}

.product-card-category {
  display: inline-block;
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: var(--space-sm);
}

.product-card-title {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  margin-bottom: var(--space-sm);
  color: var(--color-text);
}

.product-card-description {
  font-size: 0.9rem;
  color: var(--color-text-light);
  margin-bottom: var(--space-md);
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.product-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* --- Rating Stars --- */
.rating {
  display: flex;
  align-items: center;
  gap: 2px;
}

.rating .star {
  color: var(--color-star);
  font-size: 0.9rem;
}

.rating .star.empty {
  color: var(--color-border);
}

.rating-text {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-left: var(--space-sm);
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  border: none;
  text-decoration: none;
}

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

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

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

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

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

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

.btn-sm {
  padding: 8px 18px;
  font-size: 0.875rem;
}

.btn-lg {
  padding: 16px 40px;
  font-size: 1.1rem;
}

/* --- Category Card --- */
.category-card {
  background: var(--color-bg);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
  text-align: center;
  border: 1px solid var(--color-border);
  transition: all var(--transition);
  cursor: pointer;
  text-decoration: none;
  display: block;
}

.category-card:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-hover);
  transform: translateY(-4px);
}

.category-card-icon {
  font-size: 3rem;
  margin-bottom: var(--space-md);
}

.category-card h3 {
  margin-bottom: var(--space-sm);
}

.category-card p {
  font-size: 0.9rem;
}

/* --- Trust Badges --- */
.trust-section {
  text-align: center;
}

.trust-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-xl);
}

.trust-item {
  text-align: center;
  padding: var(--space-lg);
}

.trust-icon {
  font-size: 2.5rem;
  color: var(--color-primary);
  margin-bottom: var(--space-md);
}

.trust-item h4 {
  margin-bottom: var(--space-sm);
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
}

.trust-item p {
  font-size: 0.85rem;
}

/* --- Breadcrumbs --- */
.breadcrumbs {
  padding: var(--space-md) 0;
  font-size: 0.9rem;
}

.breadcrumbs a {
  color: var(--color-text-muted);
}

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

.breadcrumbs span {
  color: var(--color-text-muted);
  margin: 0 var(--space-sm);
}

.breadcrumbs .current {
  color: var(--color-text);
  font-weight: 500;
}

/* --- Presell Product Page --- */
.presell-hero {
  background: linear-gradient(135deg, var(--color-primary-light) 0%, #FFF8E7 100%);
  padding: var(--space-3xl) 0;
}

.presell-hero .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
  align-items: center;
}

.presell-badge {
  display: inline-block;
  background: var(--color-accent);
  color: white;
  font-size: 0.8rem;
  font-weight: 700;
  padding: 4px 14px;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: var(--space-md);
}

.presell-hero h1 {
  font-size: 2.5rem;
  margin-bottom: var(--space-md);
}

.presell-hero .subtitle {
  font-size: 1.15rem;
  color: var(--color-text-light);
  margin-bottom: var(--space-lg);
}

.presell-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.presell-image img {
  width: 100%;
}

/* Presell Content */
.presell-content {
  max-width: 800px;
  margin: 0 auto;
  padding: var(--space-3xl) var(--container-padding);
}

.presell-content h2 {
  margin: var(--space-2xl) 0 var(--space-md);
  color: var(--color-text);
}

.presell-content p {
  font-size: 1.05rem;
  line-height: 1.8;
}

.presell-content ul {
  list-style: none;
  margin: var(--space-md) 0;
}

.presell-content ul li {
  padding: var(--space-sm) 0;
  padding-left: var(--space-lg);
  position: relative;
  color: var(--color-text-light);
}

.presell-content ul li::before {
  content: '\2713';
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-weight: bold;
}

/* Ingredient/Feature Box */
.feature-box {
  background: var(--color-bg-alt);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
  margin: var(--space-xl) 0;
  border-left: 4px solid var(--color-primary);
}

.feature-box h3 {
  margin-bottom: var(--space-md);
  color: var(--color-primary);
}

/* --- CTA Box --- */
.cta-box {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: white;
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  text-align: center;
  margin: var(--space-2xl) 0;
}

.cta-box h2 {
  color: white;
  margin-bottom: var(--space-sm);
}

.cta-box p {
  color: rgba(255,255,255,0.9);
  font-size: 1.1rem;
  margin-bottom: var(--space-lg);
}

.cta-box .btn {
  background: var(--color-accent);
  color: white;
  font-size: 1.15rem;
  padding: 16px 48px;
}

.cta-box .btn:hover {
  background: var(--color-accent-dark);
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(212,168,83,0.4);
}

/* --- Testimonial --- */
.testimonial {
  background: var(--color-bg);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
  border: 1px solid var(--color-border);
  margin: var(--space-md) 0;
}

.testimonial-text {
  font-style: italic;
  font-size: 1.05rem;
  color: var(--color-text-light);
  margin-bottom: var(--space-md);
}

.testimonial-author {
  font-weight: 600;
  color: var(--color-text);
  font-size: 0.9rem;
}

.testimonial-verified {
  color: var(--color-success);
  font-size: 0.8rem;
}

/* --- Disclaimer --- */
.disclaimer {
  background: #FFF8E7;
  border: 1px solid var(--color-accent);
  border-radius: var(--radius-sm);
  padding: var(--space-lg);
  margin: var(--space-xl) 0;
  font-size: 0.85rem;
  color: var(--color-text-light);
  line-height: 1.6;
}

.disclaimer strong {
  color: var(--color-text);
}

/* --- Footer --- */
.footer {
  background: var(--color-bg-dark);
  color: rgba(255,255,255,0.7);
  padding: var(--space-3xl) 0 var(--space-xl);
}

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

.footer-brand {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  color: white;
  margin-bottom: var(--space-md);
}

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

.footer h4 {
  color: white;
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: var(--space-md);
}

.footer a {
  color: rgba(255,255,255,0.6);
  font-size: 0.9rem;
  display: block;
  padding: 4px 0;
}

.footer a:hover {
  color: var(--color-accent);
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: var(--space-lg);
  text-align: center;
  font-size: 0.85rem;
}

.footer-disclaimer {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.4);
  max-width: 800px;
  margin: var(--space-md) auto 0;
  line-height: 1.5;
}

/* --- Responsive --- */
@media (max-width: 992px) {
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .trust-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .presell-hero .container { grid-template-columns: 1fr; text-align: center; }
  h1 { font-size: 2rem; }
  .hero h1 { font-size: 2.25rem; }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-bg);
    flex-direction: column;
    padding: var(--space-lg);
    gap: var(--space-md);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
  }

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

  .nav-toggle {
    display: block;
  }

  .grid-2 { grid-template-columns: 1fr; }
  .grid-3 { grid-template-columns: 1fr; }

  h1 { font-size: 1.75rem; }
  h2 { font-size: 1.5rem; }

  .hero { padding: var(--space-2xl) 0; }
  .hero h1 { font-size: 1.8rem; }
  .section { padding: var(--space-2xl) 0; }

  .presell-hero h1 { font-size: 1.8rem; }
}

@media (max-width: 480px) {
  .trust-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .btn-lg { padding: 14px 28px; font-size: 1rem; }
}