/* EV Industry News Page Styles */

:root {
  /* Color Palette - Electric Vehicle Theme */
  --primary-color: #10b981;
  --secondary-color: #064e3b;
  --accent-color: #34d399;
  --text-primary: #1a1a1a;
  --text-secondary: #4a5568;
  --bg-light: #f0fdf4;
  --bg-white: #ffffff;
  --gradient-primary: linear-gradient(135deg, #10b981 0%, #34d399 100%);
  --border-color: #d1fae5;
  --shadow-sm: 0 2px 4px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.07);
  --shadow-lg: 0 10px 15px rgba(0,0,0,0.1);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Sans", "Noto Sans JP", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-light);
}

/* Navigation */
.main-nav {
  position: fixed;
  top: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-sm);
  z-index: 1000;
  transition: var(--transition);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

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

.logo-text {
  font-size: 1.5rem;
  font-weight: 800;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 2rem;
}

.nav-menu a {
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 500;
  transition: var(--transition);
}

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

/* Main Content */
main {
  max-width: 900px;
  margin: 120px auto 0;
  padding: 2rem;
}

/* News Article */
.news-article {
  background: var(--bg-white);
  border-radius: 12px;
  padding: 3rem;
  box-shadow: var(--shadow-md);
  margin-bottom: 3rem;
}

.news-meta {
  display: flex;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
  font-size: 0.95rem;
  color: var(--text-secondary);
  flex-wrap: wrap;
}

.news-date,
.news-source {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.news-title {
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 2rem;
  line-height: 1.3;
}

.news-article-image {
  width: 100%;
  max-width: 100%;
  height: auto;
  margin-bottom: 2.5rem;
  border-radius: 12px;
  box-shadow: var(--shadow-md);
  display: block;
  background: var(--gradient-primary);
  min-height: 400px;
  object-fit: cover;
}

.news-content {
  font-size: 1.05rem;
  line-height: 1.9;
  color: var(--text-primary);
  margin-bottom: 2.5rem;
}

.news-content p {
  margin-bottom: 1.5rem;
}

.news-content h2 {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--primary-color);
  margin-top: 2.5rem;
  margin-bottom: 1.2rem;
  padding-bottom: 0.5rem;
  border-bottom: 3px solid var(--border-color);
}

.news-content h3 {
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--secondary-color);
  margin-top: 2rem;
  margin-bottom: 1rem;
}

/* News Source Section */
.news-source-section {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 2px solid var(--border-color);
}

.news-source-list {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.news-source-list dt {
  font-weight: 700;
  color: var(--primary-color);
  font-size: 0.95rem;
  margin-top: 0.5rem;
}

.news-source-list dt:first-child {
  margin-top: 0;
}

.news-source-list dd {
  margin-left: 0;
  color: var(--text-primary);
  font-size: 0.95rem;
}

.news-source-list a {
  color: var(--primary-color);
  text-decoration: none;
  word-break: break-all;
}

.news-source-list a:hover {
  text-decoration: underline;
}

/* News List Page */
.news-list {
  display: grid;
  gap: 2rem;
  margin-top: 3rem;
}

.news-card {
  background: var(--bg-white);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

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

.news-card-image {
  width: 100%;
  height: 250px;
  object-fit: cover;
  background: var(--gradient-primary);
}

.news-card-content {
  padding: 2rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.news-card-title {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.news-card-meta {
  display: flex;
  gap: 1rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

.news-card-excerpt {
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 1.5rem;
  flex: 1;
}

.news-card-link {
  display: inline-block;
  padding: 0.7rem 1.3rem;
  background: var(--gradient-primary);
  color: white;
  text-decoration: none;
  border-radius: 6px;
  transition: var(--transition);
  align-self: flex-start;
  font-weight: 600;
}

.news-card-link:hover {
  transform: translateX(5px);
}

/* Section Title */
.section-title {
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 3px solid var(--accent-color);
}

/* Footer */
footer {
  background: var(--secondary-color);
  color: white;
  padding: 3rem 2rem 1.5rem;
  margin-top: 5rem;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  text-align: center;
}

.footer-links {
  list-style: none;
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

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

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

.footer-copyright {
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  font-size: 0.9rem;
  opacity: 0.8;
}

/* Responsive Design */
@media (max-width: 768px) {
  .nav-container {
    padding: 1rem;
  }

  .nav-menu {
    gap: 1rem;
    font-size: 0.95rem;
  }

  main {
    margin-top: 100px;
    padding: 1rem;
  }

  .news-article {
    padding: 1.5rem;
  }

  .news-title {
    font-size: 1.5rem;
  }

  .news-content h2 {
    font-size: 1.3rem;
  }

  .news-content h3 {
    font-size: 1.1rem;
  }

  .section-title {
    font-size: 1.75rem;
  }

  .news-card-image {
    height: 200px;
  }

  .news-article-image {
    min-height: 250px;
  }
}

@media (max-width: 480px) {
  .nav-logo {
    display: none;
  }

  .nav-menu {
    flex-direction: column;
    gap: 0.5rem;
  }

  main {
    margin-top: 80px;
  }

  .news-article {
    padding: 1rem;
  }

  .news-title {
    font-size: 1.3rem;
  }

  .news-content h2 {
    font-size: 1.2rem;
  }

  .news-content h3 {
    font-size: 1rem;
  }

  .news-article-image {
    min-height: 200px;
  }
}