/* 有氧运动 - 活动日历风格样式 */

:root {
  --accent-color: #9c27b0;
  --accent-light: #e1bee7;
  --accent-dark: #7b1fa2;
  --text-primary: #333;
  --text-secondary: #666;
  --text-muted: #999;
  --bg-primary: #fff;
  --bg-secondary: #f5f5f5;
  --bg-light: #fafafa;
  --border-color: #e0e0e0;
  --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--bg-light);
}

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

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

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

/* Header */
.header {
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border-color);
  padding: 16px 0;
}

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

.logo {
  font-size: 24px;
  font-weight: 700;
  color: var(--accent-color);
}

.nav {
  display: flex;
  gap: 32px;
}

.nav a {
  color: var(--text-secondary);
  font-weight: 500;
}

.nav a:hover,
.nav a.active {
  color: var(--accent-color);
}

.search {
  display: flex;
  align-items: center;
  gap: 8px;
}

.search input {
  padding: 8px 16px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  width: 200px;
  font-size: 14px;
}

.search button {
  padding: 8px 16px;
  background: var(--accent-color);
  color: white;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 14px;
}

.search button:hover {
  background: var(--accent-dark);
}

/* Main Content */
.main {
  padding: 40px 0;
}

/* Hero Section */
.hero {
  background: linear-gradient(135deg, var(--accent-color) 0%, var(--accent-dark) 100%);
  color: white;
  padding: 60px 0;
  text-align: center;
  margin-bottom: 40px;
}

.hero h1 {
  font-size: 36px;
  font-weight: 700;
  margin-bottom: 16px;
}

.hero p {
  font-size: 16px;
  opacity: 0.9;
  max-width: 600px;
  margin: 0 auto;
}

/* Calendar Widget */
.calendar-section {
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  padding: 32px;
  margin-bottom: 40px;
  box-shadow: var(--shadow-sm);
}

.calendar-header {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  margin-bottom: 24px;
}

.calendar-header h2 {
  font-size: 20px;
  font-weight: 600;
  min-width: 150px;
  text-align: center;
}

.calendar-nav {
  width: 36px;
  height: 36px;
  border: 1px solid var(--border-color);
  background: var(--bg-primary);
  border-radius: var(--radius-sm);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  color: var(--text-secondary);
}

.calendar-nav:hover {
  border-color: var(--accent-color);
  color: var(--accent-color);
}

.calendar-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 8px;
}

.calendar-weekday {
  text-align: center;
  padding: 12px 8px;
  font-weight: 600;
  color: var(--text-secondary);
  font-size: 13px;
}

.calendar-day {
  aspect-ratio: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  cursor: pointer;
  position: relative;
  background: var(--bg-primary);
}

.calendar-day:hover {
  border-color: var(--accent-color);
}

.calendar-day.other-month {
  color: var(--text-muted);
  background: var(--bg-light);
}

.calendar-day.today {
  border-color: var(--accent-color);
  background: var(--accent-light);
}

.calendar-day.has-event::after {
  content: '';
  position: absolute;
  bottom: 6px;
  width: 4px;
  height: 4px;
  background: var(--accent-color);
  border-radius: 50%;
}

.calendar-day-number {
  font-size: 14px;
  font-weight: 500;
}

/* Section Title */
.section-title {
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--accent-color);
  display: inline-block;
}

/* Post List */
.post-list {
  margin-bottom: 40px;
}

.post-item {
  display: flex;
  gap: 20px;
  padding: 20px;
  background: var(--bg-primary);
  border-radius: var(--radius-md);
  margin-bottom: 16px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.2s;
}

.post-item:hover {
  box-shadow: var(--shadow-md);
}

.post-thumb {
  width: 160px;
  height: 100px;
  background: var(--bg-secondary);
  border-radius: var(--radius-sm);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 12px;
}

.post-content {
  flex: 1;
}

.post-title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.post-title:hover {
  color: var(--accent-color);
}

.post-meta {
  display: flex;
  gap: 16px;
  color: var(--text-muted);
  font-size: 13px;
  margin-bottom: 8px;
}

.post-excerpt {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* Post Group */
.post-group {
  margin-bottom: 32px;
}

.post-group-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--accent-color);
  margin-bottom: 16px;
  padding-left: 12px;
  border-left: 3px solid var(--accent-color);
}

/* Three Column Layout */
.three-columns {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 40px;
}

.column {
  background: var(--bg-primary);
  border-radius: var(--radius-md);
  padding: 24px;
  box-shadow: var(--shadow-sm);
}

.column h3 {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-color);
}

.column ul {
  list-style: none;
}

.column li {
  padding: 10px 0;
  border-bottom: 1px solid var(--bg-light);
}

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

.column a {
  color: var(--text-primary);
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

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

/* Breadcrumb */
.breadcrumb {
  padding: 16px 0;
  color: var(--text-muted);
  font-size: 13px;
}

.breadcrumb a {
  color: var(--text-secondary);
}

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

.breadcrumb span {
  margin: 0 8px;
}

/* Article Page */
.article-header {
  background: var(--bg-primary);
  padding: 40px;
  border-radius: var(--radius-lg);
  margin-bottom: 24px;
  text-align: center;
}

.article-title {
  font-size: 28px;
  font-weight: 700;
  margin-bottom: 16px;
  line-height: 1.4;
}

.article-meta {
  display: flex;
  justify-content: center;
  gap: 24px;
  color: var(--text-muted);
  font-size: 14px;
}

.article-featured {
  width: 100%;
  height: 300px;
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
}

.article-content {
  background: var(--bg-primary);
  padding: 40px;
  border-radius: var(--radius-lg);
  margin-bottom: 24px;
}

.article-content h2 {
  font-size: 22px;
  font-weight: 600;
  margin: 32px 0 16px;
  color: var(--text-primary);
}

.article-content h3 {
  font-size: 18px;
  font-weight: 600;
  margin: 24px 0 12px;
  color: var(--text-primary);
}

.article-content p {
  margin-bottom: 16px;
  color: var(--text-secondary);
  line-height: 1.8;
}

.article-content ul,
.article-content ol {
  margin-bottom: 16px;
  padding-left: 24px;
  color: var(--text-secondary);
}

.article-content li {
  margin-bottom: 8px;
}

/* Related Posts */
.related-posts {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-bottom: 40px;
}

.related-item {
  background: var(--bg-primary);
  padding: 16px;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.related-item-title {
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.related-item-date {
  font-size: 13px;
  color: var(--text-muted);
}

/* 404 Page */
.error-page {
  text-align: center;
  padding: 100px 20px;
}

.error-code {
  font-size: 120px;
  font-weight: 700;
  color: var(--accent-color);
  line-height: 1;
  margin-bottom: 24px;
}

.error-title {
  font-size: 24px;
  font-weight: 600;
  margin-bottom: 16px;
}

.error-desc {
  color: var(--text-secondary);
  margin-bottom: 32px;
}

.error-btn {
  display: inline-block;
  padding: 12px 32px;
  background: var(--accent-color);
  color: white;
  border-radius: var(--radius-sm);
  font-weight: 500;
}

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

/* Footer */
.footer {
  background: var(--bg-primary);
  border-top: 1px solid var(--border-color);
  padding: 40px 0;
  margin-top: 60px;
}

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

.footer-logo {
  font-size: 20px;
  font-weight: 700;
  color: var(--accent-color);
}

.footer-links {
  display: flex;
  gap: 24px;
}

.footer-links a {
  color: var(--text-secondary);
  font-size: 14px;
}

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

.footer-copy {
  color: var(--text-muted);
  font-size: 13px;
}

/* Responsive */
@media (max-width: 768px) {
  .header .container {
    flex-wrap: wrap;
    gap: 16px;
  }

  .nav {
    order: 3;
    width: 100%;
    justify-content: center;
    gap: 20px;
  }

  .search input {
    width: 140px;
  }

  .hero h1 {
    font-size: 28px;
  }

  .calendar-section {
    padding: 20px;
  }

  .calendar-grid {
    gap: 4px;
  }

  .calendar-weekday {
    padding: 8px 4px;
    font-size: 12px;
  }

  .calendar-day {
    font-size: 12px;
  }

  .post-item {
    flex-direction: column;
    gap: 16px;
  }

  .post-thumb {
    width: 100%;
    height: 160px;
  }

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

  .article-header,
  .article-content {
    padding: 24px;
  }

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

  .related-posts {
    grid-template-columns: 1fr;
  }

  .footer-content {
    flex-direction: column;
    gap: 20px;
    text-align: center;
  }

  .error-code {
    font-size: 80px;
  }
}