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

:root {
  --primary: #2d6a4f;
  --primary-dark: #1b4332;
  --primary-light: #52b788;
  --accent: #d4a373;
  --accent-light: #e9c46a;
  --bg: #fafaf8;
  --bg-white: #ffffff;
  --text: #2d3436;
  --text-light: #636e72;
  --text-lighter: #b2bec3;
  --border: #e8e8e4;
  --shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
  --shadow-hover: 0 8px 30px rgba(0, 0, 0, 0.12);
  --radius: 12px;
  --radius-sm: 8px;
  --transition: 0.3s ease;
  --max-width: 1200px;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Noto Sans TC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.8;
  font-size: 16px;
}

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

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

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 20px;
}

/* ===== Top Bar ===== */
.top-bar {
  background: var(--primary-dark);
  color: rgba(255, 255, 255, 0.8);
  font-size: 13px;
  padding: 6px 0;
}

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

.social-links {
  display: flex;
  gap: 12px;
}

.social-links a {
  color: rgba(255, 255, 255, 0.7);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.5px;
  transition: color var(--transition);
}

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

/* ===== Header ===== */
.site-header {
  background: var(--bg-white);
  padding: 24px 0;
  border-bottom: 1px solid var(--border);
}

.logo {
  display: flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
}

.logo-icon {
  font-size: 40px;
  line-height: 1;
}

.logo h1 {
  font-size: 28px;
  font-weight: 900;
  color: var(--primary-dark);
  letter-spacing: 2px;
  line-height: 1.2;
}

.logo-subtitle {
  font-size: 13px;
  color: var(--text-light);
  letter-spacing: 3px;
  text-transform: uppercase;
  font-weight: 300;
}

/* ===== Navigation ===== */
.main-nav {
  background: var(--primary);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.main-nav .container {
  display: flex;
  align-items: center;
}

.nav-menu {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
}

.nav-link {
  display: block;
  padding: 14px 18px;
  color: rgba(255, 255, 255, 0.85);
  font-size: 15px;
  font-weight: 500;
  transition: all var(--transition);
  border-bottom: 3px solid transparent;
  white-space: nowrap;
}

.nav-link:hover,
.nav-link.active {
  color: #fff;
  background: rgba(255, 255, 255, 0.1);
  border-bottom-color: var(--accent-light);
}

.nav-link .country-emoji {
  margin-right: 4px;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 10px;
  flex-direction: column;
  gap: 5px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: var(--transition);
}

/* ===== Hero Banner ===== */
.hero {
  position: relative;
  height: 380px;
  background: url('https://picsum.photos/seed/travel-hero/1400/500') center/cover no-repeat;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(27, 67, 50, 0.7), rgba(45, 106, 79, 0.5));
}

.hero-content {
  position: relative;
  text-align: center;
  color: #fff;
  padding: 20px;
}

.hero-title {
  font-size: 42px;
  font-weight: 900;
  margin-bottom: 12px;
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.3);
  letter-spacing: 3px;
}

.hero-desc {
  font-size: 18px;
  font-weight: 300;
  opacity: 0.9;
  letter-spacing: 1px;
}

/* ===== Main Content Grid ===== */
.main-content {
  padding: 40px 0;
}

.main-grid {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 40px;
  align-items: start;
}

/* ===== Section Header ===== */
.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 28px;
  padding-bottom: 14px;
  border-bottom: 2px solid var(--primary);
}

.section-title {
  font-size: 22px;
  font-weight: 700;
  color: var(--primary-dark);
}

.article-count {
  font-size: 14px;
  color: var(--text-light);
}

/* ===== Article Cards ===== */
.articles-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}

.article-card {
  background: var(--bg-white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: all var(--transition);
  display: grid;
  grid-template-columns: 320px 1fr;
}

.article-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}

.article-card-image {
  position: relative;
  overflow: hidden;
  aspect-ratio: 16/10;
}

.article-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

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

.article-card-country {
  position: absolute;
  top: 12px;
  left: 12px;
  background: var(--primary);
  color: #fff;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 13px;
  font-weight: 500;
  backdrop-filter: blur(4px);
}

.article-card-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.article-card-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 13px;
  color: var(--text-light);
  margin-bottom: 10px;
}

.article-card-meta .date::before {
  content: '📅 ';
}

.article-card-meta .read-time::before {
  content: '⏱ ';
}

.article-card-meta .views {
  color: var(--accent);
  font-weight: 500;
}

.article-card-title {
  font-size: 20px;
  font-weight: 700;
  line-height: 1.5;
  margin-bottom: 10px;
  color: var(--text);
  transition: color var(--transition);
}

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

.article-card-excerpt {
  font-size: 14.5px;
  color: var(--text-light);
  line-height: 1.8;
  margin-bottom: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.article-card-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 14px;
}

.tag {
  display: inline-block;
  padding: 3px 10px;
  background: #f0f7f4;
  color: var(--primary);
  border-radius: 20px;
  font-size: 12px;
  font-weight: 500;
}

.read-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--primary);
  font-size: 14px;
  font-weight: 600;
  transition: all var(--transition);
  align-self: flex-start;
}

.read-more:hover {
  color: var(--primary-dark);
  gap: 10px;
}

.read-more::after {
  content: '→';
  transition: transform var(--transition);
}

.read-more:hover::after {
  transform: translateX(3px);
}

/* ===== Featured Card (First Article) ===== */
.article-card.featured {
  grid-template-columns: 1fr;
}

.article-card.featured .article-card-image {
  aspect-ratio: 16/8;
}

.article-card.featured .article-card-title {
  font-size: 24px;
}

/* ===== Load More ===== */
.load-more {
  text-align: center;
  margin-top: 32px;
}

.btn-load-more {
  background: var(--bg-white);
  border: 2px solid var(--primary);
  color: var(--primary);
  padding: 12px 40px;
  border-radius: 30px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  font-family: inherit;
}

.btn-load-more:hover {
  background: var(--primary);
  color: #fff;
}

/* ===== Sidebar ===== */
.sidebar {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.sidebar-widget {
  background: var(--bg-white);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
}

.widget-title {
  font-size: 17px;
  font-weight: 700;
  color: var(--primary-dark);
  margin-bottom: 16px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--primary-light);
  position: relative;
}

/* Search */
.search-box {
  display: flex;
  gap: 0;
}

.search-box input {
  flex: 1;
  padding: 10px 14px;
  border: 2px solid var(--border);
  border-radius: var(--radius-sm) 0 0 var(--radius-sm);
  font-size: 14px;
  font-family: inherit;
  outline: none;
  transition: border-color var(--transition);
}

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

.search-btn {
  padding: 10px 16px;
  background: var(--primary);
  border: none;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  cursor: pointer;
  font-size: 16px;
  transition: background var(--transition);
}

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

/* About */
.about-content {
  text-align: center;
}

.about-avatar {
  font-size: 48px;
  margin-bottom: 12px;
}

.about-content p {
  font-size: 14px;
  color: var(--text-light);
  line-height: 1.8;
}

/* Category List */
.category-list {
  list-style: none;
}

.category-list li {
  border-bottom: 1px solid var(--border);
}

.category-list li:last-child {
  border-bottom: none;
}

.category-list a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 4px;
  font-size: 14.5px;
  color: var(--text);
  transition: all var(--transition);
}

.category-list a:hover {
  color: var(--primary);
  padding-left: 10px;
}

.category-count {
  background: #f0f7f4;
  color: var(--primary);
  padding: 2px 10px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
}

/* Popular List */
.popular-list {
  list-style: none;
}

.popular-item {
  display: flex;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
}

.popular-item:last-child {
  border-bottom: none;
}

.popular-item-image {
  width: 70px;
  height: 52px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  flex-shrink: 0;
}

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

.popular-item-info {
  flex: 1;
  min-width: 0;
}

.popular-item-title {
  font-size: 13.5px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--text);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  transition: color var(--transition);
}

.popular-item-title:hover {
  color: var(--primary);
}

.popular-item-date {
  font-size: 12px;
  color: var(--text-lighter);
  margin-top: 2px;
}

/* Tag Cloud */
.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag-cloud .tag {
  cursor: pointer;
  transition: all var(--transition);
}

.tag-cloud .tag:hover {
  background: var(--primary);
  color: #fff;
}

/* ===== Article Detail Page ===== */
.article-detail {
  background: var(--bg-white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.article-hero-image {
  width: 100%;
  aspect-ratio: 16/8;
  overflow: hidden;
}

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

.article-detail-body {
  padding: 36px;
}

.article-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-light);
  margin-bottom: 16px;
}

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

.article-breadcrumb a:hover {
  text-decoration: underline;
}

.article-detail-title {
  font-size: 28px;
  font-weight: 900;
  line-height: 1.5;
  color: var(--primary-dark);
  margin-bottom: 16px;
}

.article-detail-meta {
  display: flex;
  align-items: center;
  gap: 20px;
  font-size: 14px;
  color: var(--text-light);
  margin-bottom: 12px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
}

.article-detail-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}

.article-detail-content {
  font-size: 16px;
  line-height: 2;
  color: var(--text);
}

.article-detail-content h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--primary-dark);
  margin: 28px 0 14px;
  padding-left: 14px;
  border-left: 4px solid var(--primary);
}

.article-detail-content p {
  margin-bottom: 16px;
}

.article-nav {
  display: flex;
  justify-content: space-between;
  margin-top: 36px;
  padding-top: 24px;
  border-top: 2px solid var(--border);
  gap: 20px;
}

.article-nav a {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 18px;
  background: #f8f9fa;
  border-radius: var(--radius-sm);
  flex: 1;
  transition: all var(--transition);
}

.article-nav a:hover {
  background: #f0f7f4;
}

.article-nav-label {
  font-size: 12px;
  color: var(--text-lighter);
  font-weight: 500;
}

.article-nav-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--primary-dark);
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.article-nav .next {
  text-align: right;
}

/* ===== Footer ===== */
.site-footer {
  background: var(--primary-dark);
  color: rgba(255, 255, 255, 0.8);
  padding: 48px 0 0;
  margin-top: 40px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 36px;
}

.footer-col h3 {
  color: #fff;
  font-size: 17px;
  font-weight: 700;
  margin-bottom: 16px;
  letter-spacing: 1px;
}

.footer-col p {
  font-size: 14px;
  line-height: 1.8;
  opacity: 0.8;
}

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

.footer-links li {
  margin-bottom: 8px;
}

.footer-links a {
  font-size: 14px;
  opacity: 0.7;
  transition: all var(--transition);
}

.footer-links a:hover {
  opacity: 1;
  color: var(--accent-light);
}

.footer-social {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-social a {
  font-size: 14px;
  opacity: 0.7;
  transition: all var(--transition);
}

.footer-social a:hover {
  opacity: 1;
  color: var(--accent-light);
}

.footer-bottom {
  text-align: center;
  padding: 20px 0;
  margin-top: 36px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 13px;
  opacity: 0.6;
}

/* ===== Back to Top ===== */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 46px;
  height: 46px;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: 50%;
  font-size: 20px;
  cursor: pointer;
  box-shadow: var(--shadow-hover);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition);
  z-index: 999;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  background: var(--primary-dark);
  transform: translateY(-3px);
}

/* ===== No Results ===== */
.no-results {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-light);
}

.no-results-icon {
  font-size: 48px;
  margin-bottom: 16px;
}

.no-results h3 {
  font-size: 20px;
  margin-bottom: 8px;
  color: var(--text);
}

/* ===== Animations ===== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.article-card {
  animation: fadeInUp 0.5s ease forwards;
}

.article-card:nth-child(2) { animation-delay: 0.1s; }
.article-card:nth-child(3) { animation-delay: 0.15s; }
.article-card:nth-child(4) { animation-delay: 0.2s; }
.article-card:nth-child(5) { animation-delay: 0.25s; }
.article-card:nth-child(6) { animation-delay: 0.3s; }

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .main-grid {
    grid-template-columns: 1fr;
  }

  .sidebar {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 28px;
  }
}

@media (max-width: 768px) {
  .hero {
    height: 260px;
  }

  .hero-title {
    font-size: 28px;
  }

  .hero-desc {
    font-size: 15px;
  }

  .article-card {
    grid-template-columns: 1fr;
  }

  .article-card-image {
    aspect-ratio: 16/9;
  }

  .article-card.featured .article-card-title {
    font-size: 20px;
  }

  .nav-toggle {
    display: flex;
    margin-left: auto;
    padding: 14px 0;
  }

  .nav-menu {
    display: none;
    width: 100%;
    flex-direction: column;
    background: var(--primary);
    position: absolute;
    top: 100%;
    left: 0;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  }

  .nav-menu.open {
    display: flex;
  }

  .main-nav .container {
    position: relative;
    flex-wrap: wrap;
  }

  .sidebar {
    grid-template-columns: 1fr;
  }

  .article-detail-body {
    padding: 24px 18px;
  }

  .article-detail-title {
    font-size: 22px;
  }

  .article-nav {
    flex-direction: column;
  }

  .article-nav .next {
    text-align: left;
  }

  .top-bar-text {
    display: none;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .logo h1 {
    font-size: 22px;
  }

  .hero {
    height: 200px;
  }

  .hero-title {
    font-size: 22px;
  }

  .article-card-body {
    padding: 16px;
  }

  .article-card-title {
    font-size: 17px;
  }
}