/**
 * SupplementHealthHub - Main Stylesheet
 * Author: SupplementHealthHub Team
 */

/* ---------- Variables ---------- */
:root {
  /* Light Theme Colors */
  --color-primary: #4caf50;
  --color-primary-dark: #388e3c;
  --color-primary-light: #a5d6a7;
  --color-secondary: #2196f3;
  --color-secondary-dark: #0d47a1;
  --color-secondary-light: #90caf9;
  --color-text: #333333;
  --color-text-light: #666666;
  --color-background: #ffffff;
  --color-background-alt: #f7f7f7;
  --color-border: #e0e0e0;
  --color-card-shadow: rgba(0, 0, 0, 0.1);
  --color-success: #4caf50;
  --color-error: #f44336;
  --color-warning: #ff9800;
  --color-info: #2196f3;
}

/* Dark Theme Colors */
[data-theme="dark"] {
  --color-primary: #81c784;
  --color-primary-dark: #4caf50;
  --color-primary-light: #c8e6c9;
  --color-secondary: #64b5f6;
  --color-secondary-dark: #42a5f5;
  --color-secondary-light: #bbdefb;
  --color-text: #f1f1f1;
  --color-text-light: #bdbdbd;
  --color-background: #121212;
  --color-background-alt: #1e1e1e;
  --color-border: #333333;
  --color-card-shadow: rgba(0, 0, 0, 0.4);
  --color-success: #81c784;
  --color-error: #e57373;
  --color-warning: #ffb74d;
  --color-info: #64b5f6;
}

/* ---------- Base Styles ---------- */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 62.5%; /* 10px = 1rem */
  scroll-behavior: smooth;
}

body {
  font-family: 'Open Sans', sans-serif;
  font-size: 1.6rem;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-background);
  transition: background-color 0.3s, color 0.3s;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Montserrat', sans-serif;
  line-height: 1.2;
  margin-bottom: 1.5rem;
  color: var(--color-text);
}

h1 {
  font-size: 3.6rem;
  font-weight: 700;
}

h2 {
  font-size: 2.8rem;
  font-weight: 700;
}

h3 {
  font-size: 2.4rem;
  font-weight: 600;
}

p {
  margin-bottom: 1.5rem;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.3s;
}

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

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

ul, ol {
  margin-bottom: 1.5rem;
  padding-left: 2rem;
}

/* ---------- Common Classes ---------- */
.container {
  width: 100%;
  max-width: 120rem;
  margin: 0 auto;
  padding: 0 2rem;
}

.btn {
  display: inline-block;
  font-weight: 600;
  font-size: 1.6rem;
  padding: 1rem 2rem;
  border-radius: 0.5rem;
  text-align: center;
  cursor: pointer;
  transition: all 0.3s;
  border: none;
}

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

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

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

.btn-secondary:hover {
  background-color: var(--color-secondary-dark);
  color: white;
}

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

/* Skip link for accessibility */
.skip-link {
  position: absolute;
  top: -5rem;
  left: 1rem;
  background-color: var(--color-background);
  color: var(--color-primary);
  padding: 1rem 1.5rem;
  border-radius: 0 0 0.5rem 0.5rem;
  z-index: 100;
  transition: top 0.3s;
}

.skip-link:focus {
  top: 0;
}

/* ---------- Header ---------- */
.site-header {
  border-bottom: 1px solid var(--color-border);
  padding: 1.5rem 0;
  background-color: var(--color-background);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  position: sticky;
  top: 0;
  z-index: 999;
}

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

.logo {
  display: flex;
  flex-direction: row;
}

.logo a {
  display: flex;
  align-items: center;
  color: var(--color-text);
}

.logo-img {
  height: 6rem;
  margin-right: 1rem;
}

.logo-text {
  font-family: 'Montserrat', sans-serif;
  font-size: 2.2rem;
  font-weight: 700;
}

.logo-text-container {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.site-tagline {
  font-size: 1.1rem;
  color: var(--color-text-light);
  margin-top: 0.2rem;
  margin-bottom: 0;
}

/* Navigation */
.main-nav {
  display: flex;
  align-items: center;
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--color-text);
  font-size: 2.4rem;
  cursor: pointer;
}

.menu {
  display: flex;
  list-style: none;
  margin: 0;
  padding: 0;
}

.menu li {
  margin-left: 2.5rem;
}

.menu a {
  color: var(--color-text);
  font-weight: 600;
  padding: 0.8rem 0;
  position: relative;
}

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

.menu a[aria-current="page"] {
  color: var(--color-primary);
}

.menu a[aria-current="page"]::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--color-primary);
}

/* Header actions */
.header-actions {
  display: flex;
  align-items: center;
}

.theme-toggle {
  margin-right: 1.5rem;
}

.theme-toggle-btn {
  background: none;
  border: none;
  color: var(--color-text);
  font-size: 1.8rem;
  cursor: pointer;
  padding: 0.5rem;
}

.search-toggle-btn {
  background: none;
  border: none;
  color: var(--color-text);
  font-size: 1.8rem;
  cursor: pointer;
  padding: 0.5rem;
}

.search-form {
  display: none;
  position: absolute;
  top: 100%;
  right: 2rem;
  background-color: var(--color-background);
  padding: 1.5rem;
  border-radius: 0.5rem;
  box-shadow: 0 2px 10px var(--color-card-shadow);
  border: 1px solid var(--color-border);
  width: 30rem;
  z-index: 100;
}

.search-form.active {
  display: flex;
}

.search-form input {
  flex: 1;
  padding: 1rem 1.5rem;
  border: 1px solid var(--color-border);
  border-radius: 0.5rem 0 0 0.5rem;
  font-size: 1.6rem;
  background-color: var(--color-background);
  color: var(--color-text);
}

.search-form button {
  background-color: var(--color-primary);
  color: white;
  border: none;
  border-radius: 0 0.5rem 0.5rem 0;
  padding: 1rem 1.5rem;
  cursor: pointer;
}

/* ---------- Footer ---------- */
.site-footer {
  background-color: var(--color-background-alt);
  border-top: 1px solid var(--color-border);
  padding: 5rem 0 2rem;
  margin-top: 5rem;
}

.footer-content {
  display: flex;
  flex-wrap: wrap;
  margin-bottom: 4rem;
}

.footer-logo {
  flex: 0 0 100%;
  max-width: 100%;
  margin-bottom: 3rem;
}

.footer-nav-wrapper {
  display: flex;
  flex-wrap: wrap;
  flex: 1;
  justify-content: space-between;
}

.footer-nav, .footer-categories, .footer-legal {
  flex: 0 0 calc(33.333% - 2rem);
  margin-bottom: 2rem;
}

.footer-menu {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-menu li {
  margin-bottom: 1rem;
}

.footer-menu a {
  color: var(--color-text);
}

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

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid var(--color-border);
}

.copyright {
  font-size: 1.4rem;
  margin-bottom: 1rem;
}

.disclaimer-text {
  font-size: 1.2rem;
  color: var(--color-text-light);
}

/* ---------- Accessibility Widget ---------- */
.accessibility-widget {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 999;
}

.accessibility-toggle {
  width: 4.5rem;
  height: 4.5rem;
  border-radius: 50%;
  background-color: var(--color-primary);
  color: white;
  border: none;
  font-size: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 2px 5px var(--color-card-shadow);
}

.accessibility-options {
  display: none;
  position: absolute;
  bottom: 5.5rem;
  right: 0;
  background-color: var(--color-background);
  border-radius: 0.5rem;
  box-shadow: 0 2px 10px var(--color-card-shadow);
  padding: 1.5rem;
  border: 1px solid var(--color-border);
  width: 20rem;
}

.accessibility-options.active {
  display: block;
}

.text-size {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.decrease-text, .reset-text, .increase-text {
  background: none;
  border: 1px solid var(--color-border);
  border-radius: 0.5rem;
  padding: 0.5rem 1rem;
  cursor: pointer;
  color: var(--color-text);
}

/* ---------- Home Page Styles ---------- */
.hero {
  padding: 6rem 0;
  background-color: var(--color-background-alt);
  text-align: center;
  margin-bottom: 5rem;
}

.hero-title {
  font-size: 4.2rem;
  margin-bottom: 2rem;
  max-width: 80rem;
  margin-left: auto;
  margin-right: auto;
}

.hero-description {
  font-size: 1.8rem;
  color: var(--color-text-light);
  max-width: 60rem;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: 3rem;
}

.hero-buttons {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
}

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-title {
  margin-bottom: 1rem;
}

.section-description {
  color: var(--color-text-light);
  max-width: 60rem;
  margin-left: auto;
  margin-right: auto;
}

.section-footer {
  text-align: center;
  margin-top: 3rem;
}

/* Categories grid */
.categories-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(25rem, 1fr));
  gap: 2rem;
  margin-bottom: 5rem;
}

.category-card {
  background-color: var(--color-background);
  border-radius: 0.8rem;
  padding: 2.5rem 2rem;
  text-align: center;
  box-shadow: 0 2px 8px var(--color-card-shadow);
  transition: transform 0.3s, box-shadow 0.3s;
  display: flex;
  flex-direction: column;
  align-items: center;
  border: 1px solid var(--color-border);
}

.category-card:hover {
  transform: translateY(-0.5rem);
  box-shadow: 0 4px 12px var(--color-card-shadow);
}

.category-icon {
  font-size: 3.6rem;
  color: var(--color-primary);
  margin-bottom: 1.5rem;
}

.category-name {
  margin-bottom: 0.8rem;
  font-size: 1.8rem;
}

.category-count {
  color: var(--color-text-light);
  font-size: 1.4rem;
}

.category-more {
  background-color: var(--color-background-alt);
}

/* Supplements grid */
.supplements-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(28rem, 1fr));
  gap: 2.5rem;
  margin-bottom: 3rem;
}

.supplement-card {
  background-color: var(--color-background);
  border-radius: 0.8rem;
  overflow: hidden;
  box-shadow: 0 2px 8px var(--color-card-shadow);
  transition: transform 0.3s, box-shadow 0.3s;
  border: 1px solid var(--color-border);
}

.supplement-card:hover {
  transform: translateY(-0.5rem);
  box-shadow: 0 4px 12px var(--color-card-shadow);
}

.supplement-card a {
  color: var(--color-text);
  display: block;
}

.supplement-image {
  height: 20rem;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-background-alt);
}

.supplement-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s;
}

.supplement-card:hover .supplement-image img {
  transform: scale(1.05);
}

.supplement-image-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 6rem;
  color: var(--color-primary);
  background-color: rgba(76, 175, 80, 0.1);
  border-radius: 8px;
  transition: all 0.3s ease;
}

.supplement-card:hover .supplement-image-placeholder {
  transform: scale(1.05);
  background-color: rgba(76, 175, 80, 0.2);
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.1);
}

.supplement-content {
  padding: 2rem;
}

.supplement-name {
  margin-bottom: 1rem;
  font-size: 1.8rem;
}

.supplement-description {
  color: var(--color-text-light);
  margin-bottom: 1.5rem;
  font-size: 1.4rem;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.view-details {
  color: var(--color-primary);
  font-weight: 600;
  display: flex;
  align-items: center;
}

.view-details i {
  margin-left: 0.5rem;
  transition: transform 0.3s;
}

.supplement-card:hover .view-details i {
  transform: translateX(0.3rem);
}

/* Articles grid */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(32rem, 1fr));
  gap: 3rem;
  margin-bottom: 3rem;
}

.article-card {
  background-color: var(--color-background);
  border-radius: 0.8rem;
  overflow: hidden;
  box-shadow: 0 2px 8px var(--color-card-shadow);
  transition: transform 0.3s, box-shadow 0.3s;
  border: 1px solid var(--color-border);
}

.article-card:hover {
  transform: translateY(-0.5rem);
  box-shadow: 0 4px 12px var(--color-card-shadow);
}

.article-image {
  height: 20rem;
  overflow: hidden;
  display: block;
}

.article-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s;
}

.article-card:hover .article-image img {
  transform: scale(1.05);
}

.article-image-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 6rem;
  color: var(--color-primary);
  background-color: var(--color-background-alt);
}

.article-content {
  padding: 2rem;
}

.article-title {
  margin-bottom: 1rem;
  font-size: 2rem;
}

.article-title a {
  color: var(--color-text);
}

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

.article-excerpt {
  color: var(--color-text-light);
  margin-bottom: 1.5rem;
  font-size: 1.5rem;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.article-meta {
  font-size: 1.4rem;
  color: var(--color-text-light);
  margin-bottom: 1.5rem;
}

.read-more {
  color: var(--color-primary);
  font-weight: 600;
  display: flex;
  align-items: center;
}

.read-more i {
  margin-left: 0.5rem;
  transition: transform 0.3s;
}

.article-card:hover .read-more i {
  transform: translateX(0.3rem);
}

/* Disclaimer section */
.disclaimer-section {
  margin-top: 4rem;
  margin-bottom: 4rem;
  background-color: var(--color-background-alt);
  padding: 2rem 0;
}

.disclaimer-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 60px;
  height: 60px;
  font-size: 2rem;
  color: var(--color-warning);
  background-color: rgba(255, 152, 0, 0.1);
  border-radius: 50%;
  margin-right: 1.5rem;
  flex-shrink: 0;
}

.dosage-disclaimer i,
.side-effects-disclaimer i {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  font-size: 1.5rem;
  color: var(--color-warning);
  background-color: rgba(255, 152, 0, 0.1);
  border-radius: 50%;
  margin-right: 1rem;
  flex-shrink: 0;
}

.disclaimer-wrapper {
  display: flex;
  align-items: flex-start;
  background-color: var(--color-background);
  border-radius: 8px;
  padding: 2rem;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.dosage-disclaimer,
.side-effects-disclaimer {
  display: flex;
  align-items: flex-start;
  background-color: rgba(255, 152, 0, 0.05);
  border-radius: 8px;
  padding: 1.5rem;
  margin-top: 2rem;
  border-left: 4px solid var(--color-warning);
}

/* Benefits section */
.benefits-section {
  padding: 5rem 0;
  background-color: var(--color-background-alt);
  margin-bottom: 5rem;
}

.benefits-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(25rem, 1fr));
  gap: 3rem;
}

.benefit-card {
  text-align: center;
  padding: 2rem;
}

.benefit-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 80px;
  height: 80px;
  font-size: 2.5rem;
  color: var(--color-primary);
  background-color: rgba(76, 175, 80, 0.1);
  border-radius: 50%;
  margin-bottom: 1.5rem;
  margin-left: auto;
  margin-right: auto;
  transition: all 0.3s ease;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.benefit-card:hover .benefit-icon {
  transform: translateY(-5px);
  background-color: var(--color-primary);
  color: white;
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
}

.benefit-title {
  margin-bottom: 1rem;
  font-size: 1.8rem;
}

.benefit-description {
  color: var(--color-text-light);
}

/* Newsletter section */
.newsletter-section {
  margin-bottom: 5rem;
}

.newsletter-wrapper {
  background-color: var(--color-primary-dark);
  color: white;
  border-radius: 1rem;
  padding: 4rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 3rem;
}

.newsletter-content {
  flex: 1 1 40rem;
}

.newsletter-title {
  color: white;
  margin-bottom: 1rem;
}

.newsletter-description {
  font-size: 1.6rem;
  margin-bottom: 0;
}

.newsletter-form {
  flex: 1 1 40rem;
  display: flex;
  gap: 1rem;
}

.newsletter-form .form-group {
  flex: 1;
}

.newsletter-form input {
  width: 100%;
  padding: 1.2rem 1.5rem;
  border: none;
  border-radius: 0.5rem;
  font-size: 1.6rem;
}

/* Empty state */
.empty-state {
  text-align: center;
  padding: 4rem 2rem;
  color: var(--color-text-light);
}

/* ---------- Media Queries ---------- */
/* Mobile navigation */
@media (max-width: 768px) {
  .menu-toggle {
    display: block;
  }
  
  .menu {
    position: fixed;
    top: 7rem;
    left: 0;
    width: 100%;
    background-color: var(--color-background);
    flex-direction: column;
    align-items: center;
    padding: 2rem 0;
    box-shadow: 0 2px 4px var(--color-card-shadow);
    transform: translateY(-150%);
    transition: transform 0.3s;
    z-index: 998;
  }
  
  .menu.active {
    transform: translateY(0);
  }
  
  .menu li {
    margin: 0 0 1.5rem 0;
  }
  
  .header-inner {
    flex-wrap: wrap;
  }
  
  .main-nav {
    order: 3;
    width: 100%;
    justify-content: flex-end;
    margin-top: 1rem;
  }
  
  .search-form {
    width: calc(100% - 4rem);
    right: 2rem;
  }
  
  .hero-title {
    font-size: 3.2rem;
  }
  
  .hero-description {
    font-size: 1.6rem;
  }
  
  .hero-buttons {
    flex-direction: column;
    align-items: center;
    gap: 1rem;
  }
  
  .categories-grid,
  .supplements-grid,
  .articles-grid,
  .benefits-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-nav, .footer-categories, .footer-legal {
    flex: 0 0 100%;
  }
  
  .newsletter-form {
    flex-direction: column;
  }
}

/* Medium screens */
@media (min-width: 769px) and (max-width: 1024px) {
  .categories-grid {
    grid-template-columns: repeat(auto-fill, minmax(22rem, 1fr));
  }
  
  .supplements-grid {
    grid-template-columns: repeat(auto-fill, minmax(25rem, 1fr));
  }
  
  .articles-grid {
    grid-template-columns: repeat(auto-fill, minmax(28rem, 1fr));
  }
  
  .benefits-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Newsletter/Health Tips section styles */
.newsletter-section {
  background-color: var(--color-primary);
  color: white;
  padding: 4rem 0;
  margin: 5rem 0;
}

.newsletter-wrapper {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.newsletter-content {
  max-width: 100%;
  padding: 0 2rem;
}

.newsletter-title {
  color: white;
  font-size: 2.8rem;
  margin-bottom: 1rem;
}

.health-tip {
  font-size: 1.8rem;
  line-height: 1.6;
  margin-bottom: 1rem;
  font-weight: 500;
}

.tip-category {
  font-style: italic;
  font-size: 1.4rem;
  color: rgba(255, 255, 255, 0.8);
  font-weight: 400;
}

/* Info section styles */
.info-section {
  background-color: var(--color-background-alt);
  padding: 5rem 0;
  margin-bottom: 5rem;
}

.info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 3rem;
}

.info-item {
  text-align: center;
  padding: 2rem;
  background-color: var(--color-background);
  border-radius: 8px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
  transition: all 0.3s ease;
}

.info-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
}

.info-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 80px;
  height: 80px;
  font-size: 2.5rem;
  color: var(--color-primary);
  background-color: rgba(76, 175, 80, 0.1);
  border-radius: 50%;
  margin: 0 auto 1.5rem;
  transition: all 0.3s ease;
}

.info-item:hover .info-icon {
  background-color: var(--color-primary);
  color: white;
  box-shadow: 0 6px 12px rgba(76, 175, 80, 0.2);
}

.info-title {
  font-size: 1.8rem;
  margin-bottom: 1rem;
  color: var(--color-text);
}

.info-text {
  color: var(--color-text-light);
  font-size: 1.4rem;
  line-height: 1.6;
}