/* Main CSS Styles */

/* Variables */
:root {
  /* Colors */
  --color-primary: #0066FF;
  --color-primary-light: #4D94FF;
  --color-primary-dark: #0047B3;
  
  --color-secondary: #FF3366;
  --color-secondary-light: #FF6699;
  --color-secondary-dark: #CC0033;
  
  --color-text-dark: #333333;
  --color-text-gray: #666666;
  --color-text-light: #999999;
  
  --color-bg-white: #FFFFFF;
  --color-bg-light: #F5F7FA;
  --color-bg-gray: #EAEEF2;
  
  --color-border: #E0E5EB;
  --color-success: #00C853;
  --color-warning: #FFB300;
  --color-error: #FF3D00;

  /* Spacing */
  --space-xs: 0.8rem;
  --space-sm: 1.6rem;
  --space-md: 2.4rem;
  --space-lg: 3.2rem;
  --space-xl: 4.8rem;
  --space-xxl: 6.4rem;

  /* Border radius */
  --radius-sm: 0.4rem;
  --radius-md: 0.8rem;
  --radius-lg: 1.6rem;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

/* Container */
.container {
  width: 100%;
  max-width: 128rem;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

/* Button Styles */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 1.2rem 2.4rem;
  border-radius: var(--radius-md);
  font-weight: 500;
  font-size: 1.6rem;
  transition: all var(--transition-normal);
  text-align: center;
}

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

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

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

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

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

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

/* Header Styles */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background-color: rgba(255, 255, 255, 0.98);
  box-shadow: var(--shadow-sm);
  z-index: 1000;
  transition: all var(--transition-normal);
  height: 8rem;
}

.header-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 8rem;
}

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

.logo h1 {
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--color-primary);
}

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

.main-nav ul {
  display: flex;
  gap: var(--space-md);
}

.main-nav a {
  position: relative;
  font-size: 1.6rem;
  font-weight: 500;
  color: var(--color-text-dark);
  padding: 0.8rem;
}

.main-nav a:after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-primary);
  transition: width var(--transition-normal);
}

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

.mobile-nav-toggle {
  display: none;
  font-size: 2.4rem;
  cursor: pointer;
}

/* Hero Section */
.hero-section {
  padding: calc(var(--space-xxl) * 2) 0 var(--space-xxl);
  background: linear-gradient(120deg, #f6f9fc 0%, #f0f4f8 100%);
  position: relative;
  overflow: hidden;
}

.hero-section:before {
  content: '';
  position: absolute;
  width: 150%;
  height: 150%;
  top: -25%;
  left: -25%;
  background: radial-gradient(circle, rgba(0, 102, 255, 0.05) 0%, rgba(0, 102, 255, 0) 70%);
  z-index: 0;
}

.hero-content {
  max-width: 70rem;
  margin: 0 auto var(--space-xl);
  text-align: center;
  position: relative;
  z-index: 1;
}

.hero-content h2 {
  font-size: 4.8rem;
  margin-bottom: var(--space-md);
  color: var(--color-text-dark);
  line-height: 1.2;
}

.hero-content p {
  font-size: 2rem;
  color: var(--color-text-gray);
  margin-bottom: var(--space-lg);
}

.hero-cta {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: var(--space-xl);
  margin-top: var(--space-xl);
}

.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.stat-number {
  font-size: 3.2rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-xs);
}

.stat-label {
  font-size: 1.6rem;
  color: var(--color-text-gray);
}

/* Features Section */
.features-section {
  padding: var(--space-xxl) 0;
  background-color: var(--color-bg-white);
}

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

.section-heading h2 {
  font-size: 3.6rem;
  margin-bottom: var(--space-xs);
  color: var(--color-text-dark);
}

.section-heading p {
  font-size: 1.8rem;
  color: var(--color-text-gray);
}

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

.feature-card {
  background-color: var(--color-bg-white);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  box-shadow: var(--shadow-md);
  text-align: center;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.feature-icon {
  font-size: 4.8rem;
  color: var(--color-primary);
  margin-bottom: var(--space-md);
}

.feature-card h3 {
  font-size: 2rem;
  margin-bottom: var(--space-sm);
  color: var(--color-text-dark);
}

.feature-card p {
  font-size: 1.6rem;
  color: var(--color-text-gray);
}

/* Trending Section */
.trending-section {
  padding: var(--space-xxl) 0;
  background-color: var(--color-bg-light);
}

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

.trending-card {
  background-color: var(--color-bg-white);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.trending-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.trending-image {
  position: relative;
  height: 24rem;
}

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

.trending-tag {
  position: absolute;
  top: var(--space-sm);
  left: var(--space-sm);
  background-color: var(--color-primary);
  color: white;
  padding: 0.4rem 1.2rem;
  border-radius: var(--radius-sm);
  font-size: 1.4rem;
  font-weight: 500;
}

.trending-content {
  padding: var(--space-md);
}

.trending-content h3 {
  font-size: 2rem;
  margin-bottom: var(--space-sm);
  color: var(--color-text-dark);
  line-height: 1.3;
}

.trending-content p {
  font-size: 1.6rem;
  color: var(--color-text-gray);
  margin-bottom: var(--space-md);
}

.trending-meta {
  display: flex;
  justify-content: space-between;
  font-size: 1.4rem;
  color: var(--color-text-light);
}

.trending-meta span {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.view-more {
  text-align: center;
}

/* Truth Section */
.truth-section {
  padding: var(--space-xxl) 0;
  background-color: var(--color-bg-white);
}

.truth-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

.truth-card {
  background-color: var(--color-bg-light);
  padding: var(--space-lg);
  border-radius: var(--radius-md);
  transition: transform var(--transition-normal);
}

.truth-card:hover {
  transform: translateY(-5px);
}

.truth-header {
  display: flex;
  align-items: center;
  margin-bottom: var(--space-md);
  gap: var(--space-sm);
}

.truth-header i {
  font-size: 2.4rem;
  color: var(--color-primary);
}

.truth-header h3 {
  font-size: 2rem;
  color: var(--color-text-dark);
}

.truth-card p {
  font-size: 1.6rem;
  color: var(--color-text-gray);
}

.truth-feature {
  display: flex;
  gap: var(--space-xl);
  align-items: center;
  background-color: var(--color-bg-light);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  margin-top: var(--space-xl);
}

.truth-feature-content {
  flex: 1;
}

.truth-feature-content h3 {
  font-size: 2.4rem;
  margin-bottom: var(--space-md);
  color: var(--color-text-dark);
}

.truth-feature-content p {
  font-size: 1.6rem;
  color: var(--color-text-gray);
  margin-bottom: var(--space-md);
}

.truth-feature-image {
  flex: 1;
}

.truth-feature-image img {
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
}

/* Community Section */
.community-section {
  padding: var(--space-xxl) 0;
  background-color: var(--color-bg-light);
}

.community-stats {
  display: flex;
  justify-content: space-around;
  margin-bottom: var(--space-xl);
}

.community-stat-item {
  text-align: center;
}

.stat-number {
  font-size: 3.6rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--space-xs);
}

.stat-label {
  font-size: 1.8rem;
  color: var(--color-text-gray);
}

.community-features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
  margin-bottom: var(--space-xl);
}

.community-feature {
  text-align: center;
  padding: var(--space-lg);
  background-color: var(--color-bg-white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-normal);
}

.community-feature:hover {
  transform: translateY(-5px);
}

.community-feature i {
  font-size: 4rem;
  color: var(--color-primary);
  margin-bottom: var(--space-md);
}

.community-feature h3 {
  font-size: 2rem;
  margin-bottom: var(--space-sm);
  color: var(--color-text-dark);
}

.community-feature p {
  font-size: 1.6rem;
  color: var(--color-text-gray);
}

.community-cta {
  text-align: center;
  padding: var(--space-xl);
  background-color: var(--color-bg-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
}

.community-cta h3 {
  font-size: 2.4rem;
  margin-bottom: var(--space-sm);
  color: var(--color-text-dark);
}

.community-cta p {
  font-size: 1.8rem;
  color: var(--color-text-gray);
  margin-bottom: var(--space-lg);
}

.community-cta .btn {
  margin: 0 var(--space-sm);
}

/* Testimonial Section */
.testimonial-section {
  padding: var(--space-xxl) 0;
  background-color: var(--color-bg-white);
}

.testimonial-slider {
  display: flex;
  gap: var(--space-lg);
  overflow: hidden;
}

.testimonial-slide {
  flex: 1;
  min-width: calc(33.33% - var(--space-md));
  background-color: var(--color-bg-light);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  box-shadow: var(--shadow-md);
}

.testimonial-content {
  margin-bottom: var(--space-md);
}

.testimonial-content p {
  font-size: 1.6rem;
  color: var(--color-text-gray);
  font-style: italic;
}

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

.testimonial-author img {
  width: 5rem;
  height: 5rem;
  border-radius: 50%;
  object-fit: cover;
}

.author-info h4 {
  font-size: 1.8rem;
  color: var(--color-text-dark);
  margin-bottom: 0.2rem;
}

.author-info span {
  font-size: 1.4rem;
  color: var(--color-text-light);
}

/* About Section */
.about-section {
  padding: var(--space-xxl) 0;
  background-color: var(--color-bg-light);
}

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

.about-image {
  flex: 1;
}

.about-image img {
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
}

.about-text {
  flex: 1;
}

.about-text h3 {
  font-size: 2.4rem;
  margin-bottom: var(--space-sm);
  color: var(--color-text-dark);
}

.about-text p {
  font-size: 1.6rem;
  color: var(--color-text-gray);
  margin-bottom: var(--space-md);
}

.about-text ul {
  margin-bottom: var(--space-lg);
}

.about-text li {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-sm);
  font-size: 1.6rem;
  color: var(--color-text-gray);
}

.about-text li i {
  color: var(--color-success);
  font-size: 2rem;
}

/* Subscribe Section */
.subscribe-section {
  padding: var(--space-xl) 0;
  background-color: var(--color-primary);
}

.subscribe-wrapper {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-lg);
}

.subscribe-content {
  color: white;
}

.subscribe-content h2 {
  font-size: 2.8rem;
  margin-bottom: var(--space-xs);
}

.subscribe-content p {
  font-size: 1.6rem;
  opacity: 0.9;
}

.subscribe-form {
  display: flex;
  gap: var(--space-sm);
  width: 100%;
  max-width: 50rem;
}

.subscribe-form input {
  flex: 1;
  padding: 1.2rem 1.6rem;
  border-radius: var(--radius-md);
  background-color: rgba(255, 255, 255, 0.2);
  color: white;
  border: 1px solid rgba(255, 255, 255, 0.3);
}

.subscribe-form input::placeholder {
  color: rgba(255, 255, 255, 0.7);
}

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

.subscribe-form .btn:hover {
  background-color: var(--color-bg-light);
}

/* Footer */
.footer {
  background-color: #1A202C;
  color: white;
  padding: var(--space-xl) 0 var(--space-lg);
}

.footer-top {
  display: flex;
  justify-content: space-between;
  margin-bottom: var(--space-xl);
}

.footer-logo h2 {
  font-size: 2.4rem;
  margin-bottom: var(--space-xs);
}

.footer-logo p {
  font-size: 1.4rem;
  opacity: 0.7;
}

.footer-nav {
  display: flex;
  gap: var(--space-xl);
}

.footer-nav-column h3 {
  font-size: 1.8rem;
  margin-bottom: var(--space-md);
  color: white;
}

.footer-nav-column ul li {
  margin-bottom: var(--space-xs);
}

.footer-nav-column ul li a {
  font-size: 1.4rem;
  color: rgba(255, 255, 255, 0.7);
}

.footer-nav-column ul li a:hover {
  color: white;
}

.social-links {
  display: flex;
  gap: var(--space-sm);
}

.social-links a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 3.6rem;
  height: 3.6rem;
  border-radius: 50%;
  background-color: rgba(255, 255, 255, 0.1);
  color: white;
  font-size: 1.8rem;
  transition: all var(--transition-normal);
}

.social-links a:hover {
  background-color: var(--color-primary);
  transform: translateY(-3px);
}

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

.footer-bottom p {
  font-size: 1.4rem;
  opacity: 0.7;
}