/* Main Styles for Blockchain Education and Tools Platform */

:root {
  --primary-color: #3498db;
  --secondary-color: #2ecc71;
  --accent-color: #f39c12;
  --dark-color: #2c3e50;
  --light-color: #ecf0f1;
  --text-color: #333333;
  --light-text: #ffffff;
  --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  --transition: all 0.3s ease;
}

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

body {
  font-family: 'Roboto', sans-serif;
  line-height: 1.6;
  color: var(--text-color);
  background-color: var(--light-color);
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* Header Styles */
header {
  background-color: var(--dark-color);
  color: var(--light-text);
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow);
}

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

.logo {
  display: flex;
  align-items: center;
}

.logo img {
  height: 40px;
  margin-right: 10px;
}

.logo h1 {
  font-size: 1.5rem;
  font-weight: 700;
}

nav ul {
  display: flex;
  list-style: none;
}

nav ul li {
  margin-left: 1.5rem;
}

nav ul li a {
  color: var(--light-text);
  text-decoration: none;
  font-weight: 500;
  transition: var(--transition);
}

nav ul li a:hover {
  color: var(--accent-color);
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--light-text);
  font-size: 1.5rem;
  cursor: pointer;
}

/* Hero Section */
.hero {
  background: linear-gradient(135deg, var(--primary-color), var(--dark-color));
  color: var(--light-text);
  padding: 4rem 0;
  text-align: center;
}

.hero h2 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.hero p {
  font-size: 1.2rem;
  max-width: 800px;
  margin: 0 auto 2rem;
}

.cta-button {
  display: inline-block;
  background-color: var(--accent-color);
  color: var(--light-text);
  padding: 0.8rem 1.5rem;
  border-radius: 5px;
  text-decoration: none;
  font-weight: 700;
  transition: var(--transition);
  box-shadow: var(--shadow);
}

.cta-button:hover {
  background-color: #e67e22;
  transform: translateY(-3px);
}

/* Features Section */
.features {
  padding: 4rem 0;
  background-color: #fff;
}

.section-title {
  text-align: center;
  margin-bottom: 3rem;
}

.section-title h2 {
  font-size: 2rem;
  color: var(--dark-color);
  margin-bottom: 1rem;
}

.section-title p {
  color: #666;
  max-width: 700px;
  margin: 0 auto;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.feature-card {
  background-color: #fff;
  border-radius: 8px;
  padding: 2rem;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.feature-icon {
  font-size: 2.5rem;
  color: var(--primary-color);
  margin-bottom: 1rem;
}

.feature-card h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: var(--dark-color);
}

/* Educational Content Section */
.education {
  padding: 4rem 0;
  background-color: var(--light-color);
}

.education-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.article-card {
  background-color: #fff;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.article-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.article-image {
  height: 200px;
  overflow: hidden;
}

.article-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

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

.article-content {
  padding: 1.5rem;
}

.article-content h3 {
  font-size: 1.3rem;
  margin-bottom: 0.5rem;
  color: var(--dark-color);
}

.article-content p {
  color: #666;
  margin-bottom: 1rem;
}

.read-more {
  color: var(--primary-color);
  text-decoration: none;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
}

.read-more span {
  margin-left: 5px;
  transition: var(--transition);
}

.read-more:hover span {
  transform: translateX(5px);
}

/* Tools Section */
.tools {
  padding: 4rem 0;
  background-color: #fff;
}

.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.tool-card {
  background-color: var(--light-color);
  border-radius: 8px;
  padding: 2rem;
  text-align: center;
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.tool-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.tool-icon {
  font-size: 2.5rem;
  color: var(--secondary-color);
  margin-bottom: 1rem;
}

.tool-card h3 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: var(--dark-color);
}

.tool-button {
  display: inline-block;
  background-color: var(--secondary-color);
  color: var(--light-text);
  padding: 0.6rem 1.2rem;
  border-radius: 5px;
  text-decoration: none;
  font-weight: 500;
  margin-top: 1rem;
  transition: var(--transition);
}

.tool-button:hover {
  background-color: #27ae60;
}

/* Newsletter Section */
.newsletter {
  padding: 4rem 0;
  background-color: var(--primary-color);
  color: var(--light-text);
  text-align: center;
}

.newsletter h2 {
  font-size: 2rem;
  margin-bottom: 1rem;
}

.newsletter p {
  max-width: 600px;
  margin: 0 auto 2rem;
}

.newsletter-form {
  display: flex;
  max-width: 500px;
  margin: 0 auto;
}

.newsletter-form input {
  flex: 1;
  padding: 0.8rem 1rem;
  border: none;
  border-radius: 5px 0 0 5px;
  font-size: 1rem;
}

.newsletter-form button {
  background-color: var(--accent-color);
  color: var(--light-text);
  border: none;
  padding: 0 1.5rem;
  border-radius: 0 5px 5px 0;
  cursor: pointer;
  font-weight: 700;
  transition: var(--transition);
}

.newsletter-form button:hover {
  background-color: #e67e22;
}

/* Footer */
footer {
  background-color: var(--dark-color);
  color: var(--light-text);
  padding: 3rem 0 1rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-column h3 {
  font-size: 1.2rem;
  margin-bottom: 1rem;
  color: var(--light-text);
}

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

.footer-links li {
  margin-bottom: 0.5rem;
}

.footer-links a {
  color: #bdc3c7;
  text-decoration: none;
  transition: var(--transition);
}

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

.social-links {
  display: flex;
  gap: 1rem;
}

.social-links a {
  color: var(--light-text);
  font-size: 1.5rem;
  transition: var(--transition);
}

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

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid #34495e;
  color: #bdc3c7;
}

/* Responsive Styles */
@media (max-width: 768px) {
  .header-container {
    flex-direction: column;
    align-items: flex-start;
  }
  
  nav {
    width: 100%;
    margin-top: 1rem;
  }
  
  nav ul {
    flex-direction: column;
  }
  
  nav ul li {
    margin: 0.5rem 0;
  }
  
  .mobile-menu-btn {
    display: block;
    position: absolute;
    top: 1rem;
    right: 1rem;
  }
  
  .hero h2 {
    font-size: 2rem;
  }
  
  .newsletter-form {
    flex-direction: column;
  }
  
  .newsletter-form input {
    border-radius: 5px;
    margin-bottom: 1rem;
  }
  
  .newsletter-form button {
    border-radius: 5px;
    padding: 0.8rem;
  }
}

/* Calculator Styles */
.calculator {
  background-color: #fff;
  border-radius: 8px;
  padding: 2rem;
  box-shadow: var(--shadow);
  max-width: 500px;
  margin: 0 auto;
}

.calculator h3 {
  text-align: center;
  margin-bottom: 1.5rem;
  color: var(--dark-color);
}

.calculator-form label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
}

.calculator-form input,
.calculator-form select {
  width: 100%;
  padding: 0.8rem;
  margin-bottom: 1rem;
  border: 1px solid #ddd;
  border-radius: 5px;
  font-size: 1rem;
}

.calculator-form button {
  width: 100%;
  background-color: var(--secondary-color);
  color: var(--light-text);
  border: none;
  padding: 0.8rem;
  border-radius: 5px;
  cursor: pointer;
  font-weight: 700;
  transition: var(--transition);
}

.calculator-form button:hover {
  background-color: #27ae60;
}

.calculator-result {
  margin-top: 1.5rem;
  padding: 1rem;
  background-color: var(--light-color);
  border-radius: 5px;
  text-align: center;
}

.result-value {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary-color);
}

/* Article Page Styles */
.article-header {
  background-color: var(--dark-color);
  color: var(--light-text);
  padding: 3rem 0;
}

.article-header h1 {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.article-meta {
  display: flex;
  align-items: center;
  margin-bottom: 1rem;
}

.article-meta img {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  margin-right: 1rem;
}

.article-meta .author {
  font-weight: 500;
}

.article-meta .date {
  margin-left: 1rem;
  color: #bdc3c7;
}

.article-content {
  padding: 3rem 0;
}

.article-content p {
  margin-bottom: 1.5rem;
  font-size: 1.1rem;
}

.article-content h2 {
  font-size: 1.8rem;
  margin: 2rem 0 1rem;
  color: var(--dark-color);
}

.article-content h3 {
  font-size: 1.4rem;
  margin: 1.5rem 0 1rem;
  color: var(--dark-color);
}

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

.article-content li {
  margin-bottom: 0.5rem;
}

.article-content img {
  max-width: 100%;
  border-radius: 8px;
  margin: 2rem 0;
}

.article-content blockquote {
  border-left: 4px solid var(--primary-color);
  padding-left: 1rem;
  margin: 2rem 0;
  font-style: italic;
  color: #555;
}

/* Comparison Table Styles */
.comparison-table {
  width: 100%;
  border-collapse: collapse;
  margin: 2rem 0;
  box-shadow: var(--shadow);
}

.comparison-table th,
.comparison-table td {
  padding: 1rem;
  text-align: left;
  border-bottom: 1px solid #ddd;
}

.comparison-table th {
  background-color: var(--primary-color);
  color: var(--light-text);
}

.comparison-table tr:nth-child(even) {
  background-color: var(--light-color);
}

.comparison-table tr:hover {
  background-color: #e3f2fd;
}

/* Cryptocurrency Price Ticker */
.crypto-ticker {
  background-color: var(--dark-color);
  color: var(--light-text);
  padding: 0.5rem 0;
  overflow: hidden;
}

.ticker-container {
  display: flex;
  animation: ticker 30s linear infinite;
}

.ticker-item {
  display: flex;
  align-items: center;
  margin-right: 2rem;
  white-space: nowrap;
}

.ticker-item img {
  width: 20px;
  height: 20px;
  margin-right: 0.5rem;
}

.ticker-item .price {
  font-weight: 700;
}

.ticker-item .change.positive {
  color: var(--secondary-color);
}

.ticker-item .change.negative {
  color: #e74c3c;
}

@keyframes ticker {
  0% {
    transform: translateX(100%);
  }
  100% {
    transform: translateX(-100%);
  }
}