/* ==========================================
 * Blog Page Styles
 * ========================================== */

/* Theme Variables */
:root {
  --bg-color: #ffffff;
  --text-color: #2c2c2c;
  --text-color-secondary: #999;
  --heading-color: #000000;
  --nav-bg: #ffffff;
  --nav-border: #eaeaea;
  --nav-shadow: rgba(0, 0, 0, 0.04);
  --link-color: #A31F34;
  --code-bg: #f6f6f6;
  --code-border: #e8e8e8;
  --code-text: #24292e;
  --icon-color: #666;
  --icon-hover: #A31F34;
}

[data-theme="dark"] {
  --bg-color: #111111;
  --text-color: #d4d4d4;
  --text-color-secondary: #777;
  --heading-color: #f0f0f0;
  --nav-bg: #1a1a1a;
  --nav-border: #2a2a2a;
  --nav-shadow: rgba(0, 0, 0, 0.3);
  --link-color: #ff6b7a;
  --code-bg: #1e1e1e;
  --code-border: #333;
  --code-text: #d4d4d4;
  --icon-color: #aaa;
  --icon-hover: #ff6b7a;
}

/* Smooth transition for theme change */
* {
  transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}

/* Fixed Top Navigation Bar for Blog Pages */
.blog-navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background-color: var(--nav-bg);
  border-bottom: 1px solid var(--nav-border);
  padding: 15px 0;
  z-index: 1000;
  box-shadow: 0 2px 4px var(--nav-shadow);
}

.blog-nav-container {
  max-width: 900px;
  width: 100%;
  margin: 0 auto;
  padding: 0 clamp(20px, 4vw, 40px);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

@media (min-width: 1200px) {
  .blog-nav-container {
    max-width: 1000px;
  }
}

@media (min-width: 1600px) {
  .blog-nav-container {
    max-width: 1100px;
  }
}

/* Left side - Name */
.blog-nav-left {
  flex: 1;
}

.blog-nav-name {
  font-family: var(--serif-font);
  font-size: 18px;
  font-weight: var(--serif-weight);
  color: var(--heading-color);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 8px;
}

.blog-nav-name:hover {
  text-decoration: none;
  color: var(--link-color);
}

.name-en {
  font-weight: 500;
}

.name-divider {
  color: var(--text-color-secondary);
  font-weight: 300;
  opacity: 0.5;
}

.name-zh {
  font-weight: 400;
}

/* Right side - Icons */
.blog-nav-right {
  flex: 0;
}

.blog-nav-icons {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  gap: 15px;
  align-items: center;
}

.blog-nav-icons li {
  display: inline-block;
  margin: 0;
}

.blog-nav-icons a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--icon-color);
  font-size: 18px;
  text-decoration: none;
  transition: color 0.2s ease;
}

.blog-nav-icons a:hover {
  color: var(--icon-hover);
  text-decoration: none;
}

/* Theme Toggle Button */
.theme-toggle-item {
  margin-left: 5px;
}

.theme-toggle-btn {
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--icon-color);
  font-size: 18px;
  transition: color 0.2s ease, transform 0.2s ease;
}

.theme-toggle-btn:hover {
  color: var(--icon-hover);
  transform: scale(1.1);
}

.theme-toggle-btn:focus {
  outline: none;
}

.theme-toggle-btn i {
  pointer-events: none;
}

/* Blog Content Container */
body {
  margin-top: 0;
  background-color: var(--bg-color);
  color: var(--text-color);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif, 'PingFang SC', 'Microsoft YaHei';
  -webkit-font-smoothing: antialiased;
}

.blog-container {
  max-width: 900px;
  width: 100%;
  margin: 0 auto;
  padding: 100px clamp(20px, 4vw, 40px) 60px;
}

@media (min-width: 1200px) {
  .blog-container {
    max-width: 1000px;
  }
}

@media (min-width: 1600px) {
  .blog-container {
    max-width: 1100px;
  }
}

@media (max-width: 768px) {
  .blog-container {
    padding: 80px clamp(15px, 5vw, 30px) 40px;
  }
}

.blog-post {
  background: transparent;
  padding: clamp(40px, 5vh, 60px) 0;
  border-radius: 0;
  box-shadow: none;
}

@media (min-width: 1600px) {
  .blog-post {
    padding: 60px 0;
  }
}

@media (min-width: 2000px) {
  .blog-post {
    padding: 60px 0;
  }
}

/* Blog Title */
.blog-title {
  font-family: var(--serif-font);
  font-size: clamp(32px, 3.5vw, 48px);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 20px;
  color: var(--heading-color);
}

/* Blog Meta */
.blog-meta {
  color: var(--text-color-secondary);
  font-size: 14px;
  margin-bottom: 50px;
  padding-bottom: 0;
  border-bottom: none;
}

.blog-meta time {
  font-style: italic;
}

/* Blog Content */
.blog-content {
  line-height: 1.8;
  font-size: clamp(16px, 1.05vw, 18px);
  color: var(--text-color);
}

.blog-content h2 {
  font-family: var(--serif-font);
  font-size: clamp(26px, 2.3vw, 32px);
  font-weight: 700;
  margin-top: 50px;
  margin-bottom: 20px;
  color: var(--heading-color);
  padding-top: 10px;
}

.blog-content h3 {
  font-family: var(--serif-font);
  font-size: clamp(21px, 1.9vw, 26px);
  font-weight: 600;
  margin-top: 35px;
  margin-bottom: 15px;
  color: var(--heading-color);
}

.blog-content p {
  margin-bottom: 24px;
  line-height: 1.8;
}

.blog-content ul,
.blog-content ol {
  margin-bottom: 20px;
  padding-left: 30px;
}

.blog-content li {
  margin-bottom: 10px;
}

.blog-content a {
  color: var(--link-color);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s ease;
}

.blog-content a:hover {
  border-bottom-color: var(--link-color);
  text-decoration: none;
}

.blog-content pre {
  background-color: var(--code-bg);
  border: 1px solid var(--code-border);
  border-radius: 6px;
  padding: 20px;
  overflow-x: auto;
  margin-bottom: 28px;
  margin-top: 20px;
}

.blog-content code {
  font-family: 'Courier New', Courier, monospace;
  font-size: 14px;
  line-height: 1.6;
  color: var(--code-text);
}

.blog-content p code {
  background-color: var(--code-bg);
  padding: 2px 6px;
  border-radius: 3px;
  font-size: 14px;
  border: 1px solid var(--code-border);
}

/* Mobile Responsiveness */
@media (max-width: 768px) {
  .blog-nav-container {
    padding: 0 20px;
  }
  
  .blog-nav-name {
    font-size: 16px;
  }
  
  .name-zh {
    display: none;
  }
  
  .name-divider {
    display: none;
  }
  
  .blog-nav-icons {
    gap: 12px;
  }
  
  .blog-nav-icons a {
    font-size: 16px;
  }
  
  .blog-post {
    padding: 30px 0;
  }
}

@media (max-width: 480px) {
  .blog-nav-icons {
    gap: 10px;
  }
  
  .blog-post {
    padding: 25px 0;
  }
}