/* ==========================================================================
   苏州科致软件技术有限公司 - 博客样式系统 (CSS)
   所有内容采用 UTF-8 BOM 编码，保障中文及特殊字符无码运行
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;600;800&display=swap');

:root {
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans CJK SC", sans-serif;
  --font-display: 'Outfit', var(--font-sans);

  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-tertiary: #f1f5f9;
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  
  --color-primary: #2563eb;       /* 科技深蓝 */
  --color-secondary: #0ea5e9;     /* 极客天蓝 */
  --color-accent: #10b981;        /* 极光绿 */

  --border-color: #e2e8f0;
  --border-glass: rgba(255, 255, 255, 0.6);
  --bg-glass: rgba(255, 255, 255, 0.7);
  --shadow-main: 0 10px 30px -10px rgba(148, 163, 184, 0.3);
}

.dark {
  --bg-primary: #030712;
  --bg-secondary: #0b111e;
  --bg-tertiary: #111827;
  --text-primary: #f8fafc;
  --text-secondary: #cbd5e1;
  --text-muted: #64748b;

  --color-primary: #3b82f6;
  --color-secondary: #38bdf8;
  --color-accent: #34d399;

  --border-color: #1f2937;
  --border-glass: rgba(255, 255, 255, 0.05);
  --bg-glass: rgba(11, 17, 30, 0.75);
  --shadow-main: 0 20px 40px -15px rgba(0, 0, 0, 0.7);
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  transition: background-color 0.3s, color 0.3s;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s;
}

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

.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header style */
header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  height: 70px;
  display: flex;
  align-items: center;
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}

.logo img {
  height: 34px;
  transition: filter 0.3s;
}

.dark .logo img {
  filter: invert(1) hue-rotate(180deg);
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 20px;
}

.back-home {
  font-weight: 500;
  color: var(--color-primary);
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
}

/* Theme Toggle Button */
.theme-toggle-btn {
  background: none;
  border: 1px solid var(--border-color);
  width: 38px;
  height: 38px;
  border-radius: 50%;
  cursor: pointer;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  transition: background 0.2s, border-color 0.2s;
}

.theme-toggle-btn:hover {
  background: var(--bg-tertiary);
  border-color: var(--color-primary);
}

.dark .sun-icon { display: block; }
.dark .moon-icon { display: none; }
.sun-icon { display: none; }
.moon-icon { display: block; }

/* Blog list & header */
.blog-hero {
  padding: 60px 0 20px;
  text-align: center;
}

.blog-hero h1 {
  font-size: 38px;
  font-family: var(--font-display);
  font-weight: 800;
  margin-bottom: 12px;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.blog-hero p {
  color: var(--text-secondary);
  font-size: 16px;
}

/* 搜索框设计 */
.search-wrapper {
  margin: 10px auto 24px;
  max-width: 600px;
  position: relative;
}

.search-wrapper input {
  width: 100%;
  padding: 14px 20px 14px 50px;
  font-size: 15px;
  border-radius: 30px;
  border: 1px solid var(--border-color);
  background: var(--bg-secondary);
  color: var(--text-primary);
  outline: none;
  box-shadow: 0 4px 10px rgba(0,0,0,0.02);
  transition: border-color 0.3s, box-shadow 0.3s, background-color 0.3s;
}

.search-wrapper input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
  background: var(--bg-secondary);
}

.search-wrapper .search-icon {
  position: absolute;
  left: 20px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 16px;
}

/* 技术分类筛选栏样式 */
.category-filter {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 auto 36px;
  max-width: 800px;
}

.filter-btn {
  padding: 8px 18px;
  font-size: 13px;
  font-weight: 500;
  border-radius: 20px;
  border: 1px solid var(--border-color);
  background: var(--bg-secondary);
  color: var(--text-primary);
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.filter-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--bg-tertiary);
  transform: translateY(-1px);
}

.filter-btn.active {
  background: var(--color-primary);
  color: #ffffff;
  border-color: var(--color-primary);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
}

.blog-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  margin-bottom: 40px;
}

.post-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 28px;
  box-shadow: 0 4px 6px -1px rgba(0,0,0,0.02);
  transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s;
}

.post-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-main);
  border-color: var(--color-primary);
}

.post-card h2 {
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 12px;
  line-height: 1.4;
}

.post-card-excerpt {
  color: var(--text-secondary);
  margin-bottom: 20px;
  font-size: 15px;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  line-height: 1.6;
}

.post-card-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-muted);
  font-size: 13px;
  border-top: 1px solid var(--border-color);
  padding-top: 14px;
}

/* 徽章样式 */
.post-badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 8px;
  font-size: 11px;
  font-weight: 600;
  border-radius: 6px;
  line-height: 1;
  vertical-align: middle;
  margin-left: 6px;
}

.badge-sw { background: rgba(37, 99, 235, 0.1); color: var(--color-primary); border: 1px solid rgba(37, 99, 235, 0.2); }
.badge-pdm { background: rgba(16, 185, 129, 0.1); color: var(--color-accent); border: 1px solid rgba(16, 185, 129, 0.2); }
.badge-manage { background: rgba(245, 158, 11, 0.1); color: #f59e0b; border: 1px solid rgba(245, 158, 11, 0.2); }
.badge-cs { background: rgba(139, 92, 246, 0.1); color: #8b5cf6; border: 1px solid rgba(139, 92, 246, 0.2); }
.badge-vba { background: rgba(236, 72, 153, 0.1); color: #ec4899; border: 1px solid rgba(236, 72, 153, 0.2); }
.badge-tool { background: rgba(100, 116, 139, 0.1); color: var(--text-secondary); border: 1px solid rgba(100, 116, 139, 0.2); }
.badge-share { background: rgba(14, 165, 233, 0.1); color: var(--color-secondary); border: 1px solid rgba(14, 165, 233, 0.2); }

.read-more {
  color: var(--color-primary);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

/* 分页控制器设计 */
.pagination-wrapper {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  margin: 40px 0 80px;
}

.page-btn {
  padding: 8px 16px;
  border: 1px solid var(--border-color);
  background: var(--bg-secondary);
  color: var(--text-primary);
  border-radius: 8px;
  cursor: pointer;
  font-weight: 500;
  font-size: 13px;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  gap: 6px;
}

.page-btn:hover:not(:disabled) {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background: var(--bg-tertiary);
}

.page-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.page-num {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-color);
  background: var(--bg-secondary);
  color: var(--text-primary);
  border-radius: 8px;
  cursor: pointer;
  font-weight: 500;
  font-size: 13px;
  transition: all 0.2s;
}

.page-num:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.page-num.active {
  background: var(--color-primary);
  color: #ffffff;
  border-color: var(--color-primary);
}

.no-results {
  text-align: center;
  padding: 50px 0;
  color: var(--text-muted);
  font-size: 15px;
}

.no-results i {
  font-size: 40px;
  margin-bottom: 12px;
  opacity: 0.5;
  display: block;
}

/* Post Detail page */
.post-container {
  padding: 40px 0 80px;
}

.post-header {
  margin-bottom: 30px;
}

.post-title {
  font-size: 32px;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 16px;
}

.post-detail-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  color: var(--text-muted);
  font-size: 14px;
  align-items: center;
}

.post-content {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 40px;
  box-shadow: 0 4px 6px -1px rgba(0,0,0,0.02);
}

.post-body {
  font-size: 16px;
  line-height: 1.8;
}

.post-body p {
  margin-bottom: 24px;
}

.post-body h2 {
  font-size: 24px;
  margin: 40px 0 16px;
  border-left: 4px solid var(--color-primary);
  padding-left: 12px;
  font-weight: 700;
}

.post-body h3 {
  font-size: 20px;
  margin: 32px 0 12px;
  font-weight: 600;
}

.post-body img {
  max-width: 100%;
  border-radius: 10px;
  margin: 24px auto;
  box-shadow: 0 4px 16px rgba(0,0,0,0.06);
}

.post-body pre {
  background: var(--bg-tertiary);
  padding: 20px;
  border-radius: 10px;
  overflow-x: auto;
  margin-bottom: 24px;
  border: 1px solid var(--border-color);
}

.post-body code {
  font-family: Consolas, Monaco, "Andale Mono", monospace;
  font-size: 14px;
  background: var(--bg-tertiary);
  padding: 2px 6px;
  border-radius: 4px;
  color: #c7254e;
}

.post-body pre code {
  background: none;
  padding: 0;
  color: inherit;
  border-radius: 0;
}

/* Footer */
footer {
  border-top: 1px solid var(--border-color);
  padding: 30px 0;
  text-align: center;
  color: var(--text-muted);
  font-size: 13px;
  background: var(--bg-secondary);
}

.footer-container {
  display: flex;
  flex-direction: column;
  gap: 10px;
  align-items: center;
}

.footer-icp {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
}