/* === Theme Variables === */
:root,
html[data-theme="classic"] {
  --bg-primary: #f0f2f5;
  --bg-secondary: #ffffff;
  --text-primary: #212529;
  --text-secondary: #6c757d;
  --navbar-bg: #212529;
  --navbar-text: #e9ecef;
  --accent: #0d6efd;
  --accent-hover: #0b5ed7;
  --card-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
  --card-hover-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
  --border: #dee2e6;
  --footer-bg: #f8f9fa;
  --code-bg: #f5f5f5;
  --code-text: #333;
  --blockquote-bg: #f0f4ff;
  --blockquote-border: #0d6efd;
  --badge-bg: #6c757d;
  --page-link-bg: #fff;
  --page-link-text: #0d6efd;
  --btn-outline: #6c757d;
  --input-bg: #fff;
  --input-border: #ced4da;
}

html[data-theme="green"] {
  --bg-primary: #e8f5e9;
  --bg-secondary: #ffffff;
  --text-primary: #2e3b2e;
  --text-secondary: #5a6b5a;
  --navbar-bg: #2e3b2e;
  --navbar-text: #c8e6c9;
  --accent: #43a047;
  --accent-hover: #388e3c;
  --card-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
  --card-hover-shadow: 0 8px 24px rgba(46, 59, 46, 0.15);
  --border: #c8e6c9;
  --footer-bg: #c8e6c9;
  --code-bg: #e8f5e9;
  --code-text: #2e3b2e;
  --blockquote-bg: #e8f5e9;
  --blockquote-border: #43a047;
  --badge-bg: #43a047;
  --page-link-bg: #fff;
  --page-link-text: #43a047;
  --btn-outline: #43a047;
  --input-bg: #fff;
  --input-border: #a5d6a7;
}

html[data-theme="dark"] {
  --bg-primary: #1a1a2e;
  --bg-secondary: #16213e;
  --text-primary: #e0e0e0;
  --text-secondary: #a0a0b0;
  --navbar-bg: #0f0f23;
  --navbar-text: #e94560;
  --accent: #e94560;
  --accent-hover: #c73e54;
  --card-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
  --card-hover-shadow: 0 8px 30px rgba(233, 69, 96, 0.2);
  --border: #2a2a4a;
  --footer-bg: #0f0f23;
  --code-bg: #0d0d1a;
  --code-text: #e0e0e0;
  --blockquote-bg: #1a1a3e;
  --blockquote-border: #e94560;
  --badge-bg: #e94560;
  --page-link-bg: #16213e;
  --page-link-text: #e94560;
  --btn-outline: #e94560;
  --input-bg: #16213e;
  --input-border: #2a2a4a;
}

html[data-theme="warm"] {
  --bg-primary: #fef9ef;
  --bg-secondary: #fffbf4;
  --text-primary: #5d4e37;
  --text-secondary: #8b7355;
  --navbar-bg: #5d4e37;
  --navbar-text: #f5e6d3;
  --accent: #c17e4a;
  --accent-hover: #a06b3e;
  --card-shadow: 0 1px 3px rgba(93, 78, 55, 0.1);
  --card-hover-shadow: 0 8px 24px rgba(93, 78, 55, 0.18);
  --border: #e8dcc8;
  --footer-bg: #f5e6d3;
  --code-bg: #fef9ef;
  --code-text: #5d4e37;
  --blockquote-bg: #fef9ef;
  --blockquote-border: #c17e4a;
  --badge-bg: #c17e4a;
  --page-link-bg: #fffbf4;
  --page-link-text: #c17e4a;
  --btn-outline: #c17e4a;
  --input-bg: #fffbf4;
  --input-border: #e8dcc8;
}

/* === Global Styles === */
body {
  background: var(--bg-primary);
  color: var(--text-primary);
  padding-top: 70px;
  transition: background 0.3s, color 0.3s;
}

a {
  color: var(--accent);
  transition: color 0.2s;
}
a:hover {
  color: var(--accent-hover);
}

/* Navbar */
.navbar {
  background: var(--navbar-bg) !important;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}
.navbar-brand {
  color: var(--navbar-text) !important;
  display: flex;
  align-items: center;
}
.navbar-logo {
  height: 32px;
  width: auto;
  display: block;
}
.navbar-nav .nav-link {
  color: var(--navbar-text) !important;
  opacity: 0.85;
}
.navbar-nav .nav-link:hover {
  opacity: 1;
}

/* Theme switcher button */
.theme-switcher {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: var(--navbar-text);
  border-radius: 50%;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s;
}
.theme-switcher:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.6);
}

/* Card */
.card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  box-shadow: var(--card-shadow);
  transition: transform 0.2s, box-shadow 0.2s;
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--card-hover-shadow);
}
.card-title a {
  color: var(--text-primary);
  text-decoration: none;
}
.card-title a:hover {
  color: var(--accent);
}
.card-body {
  padding: 1.25rem;
}
.card-title {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 0.4rem;
}
.card-footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: 0.6rem 1.25rem;
}
.card-meta {
  font-size: 0.8rem;
  margin-bottom: 0.5rem;
}
.card-text {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Card cover image */
.card-img-wrapper {
  height: 160px;
  overflow: hidden;
}
.card-img-top {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s;
}
.card:hover .card-img-top {
  transform: scale(1.05);
}

/* Calendar badge */
.calendar-badge {
  float: right;
  width: 48px;
  margin: 0 0 0.5rem 0.75rem;
  border-radius: 6px;
  overflow: hidden;
  text-align: center;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.12);
  line-height: 1;
}
.calendar-badge .month {
  display: block;
  background: var(--accent);
  color: #fff;
  font-size: 0.65rem;
  font-weight: 600;
  padding: 3px 0;
  letter-spacing: 0.5px;
}
.calendar-badge .day {
  display: block;
  background: var(--bg-secondary);
  color: var(--text-primary);
  font-size: 1.15rem;
  font-weight: 800;
  padding: 5px 0 4px;
}
.card-content {
  overflow: hidden;
}

/* Detail page cover image */
.detail-cover {
  width: 100%;
  max-height: 320px;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: var(--card-shadow);
}
.detail-cover-img {
  width: 100%;
  height: 320px;
  object-fit: cover;
  display: block;
}

.text-muted {
  color: var(--text-secondary) !important;
}

/* Badge */
.badge {
  background: var(--badge-bg) !important;
}

/* Code block */
pre {
  background: var(--code-bg);
  color: var(--code-text);
  padding: 1rem;
  border-radius: 8px;
  overflow-x: auto;
  border: 1px solid var(--border);
}

/* Blockquote */
blockquote {
  border-left: 4px solid var(--blockquote-border);
  padding: 0.75rem 1.25rem;
  background: var(--blockquote-bg);
  border-radius: 0 6px 6px 0;
  color: var(--text-primary);
}

/* Pagination */
.page-link {
  background: var(--page-link-bg);
  color: var(--page-link-text);
  border-color: var(--border);
}
.page-link:hover {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}
.page-item.disabled .page-link {
  background: var(--bg-secondary);
  color: var(--text-secondary);
  border-color: var(--border);
}

/* Buttons */
.btn-outline-secondary {
  color: var(--btn-outline);
  border-color: var(--btn-outline);
}
.btn-outline-secondary:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

/* Footer */
footer {
  background: var(--footer-bg) !important;
  border-color: var(--border) !important;
}

/* Post body */
.post-body {
  font-size: 1.05rem;
  line-height: 1.85;
}

/* Hero section */
.hero {
  text-align: center;
  padding: 2.5rem 0 1.5rem;
}
.hero h1 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-primary);
}
.hero p {
  color: var(--text-secondary);
  font-size: 1.05rem;
}

/* Article page */
.article-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2rem;
  box-shadow: var(--card-shadow);
}

/* === Layout Styles === */

/* Layout switcher button */
.layout-switcher {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: var(--navbar-text);
  border-radius: 50%;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background 0.2s, border-color 0.2s;
}
.layout-switcher:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.6);
}

/* Single column: narrow, centered */
.home-layout-single .post-grid .col-md-6 {
  width: 100%;
}
.home-layout-single .post-grid {
  max-width: 680px;
  margin: 0 auto;
}

/* Sidebar layout: left content + right sidebar */
.home-layout-sidebar .home-container {
  display: flex;
  gap: 2rem;
  align-items: flex-start;
}
.home-layout-sidebar .post-grid {
  flex: 1;
  min-width: 0;
}
.home-layout-sidebar .sidebar {
  width: 300px;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

@media (max-width: 992px) {
  .home-layout-sidebar .home-container {
    flex-direction: column;
  }
  .home-layout-sidebar .sidebar {
    width: 100%;
  }
  .home-layout-single .post-grid {
    max-width: 100%;
  }
}

/* Sidebar sections */
.sidebar-section {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.25rem;
  box-shadow: var(--card-shadow);
}
.sidebar-section h5 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--accent);
}
.sidebar-section p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin: 0;
}

/* Sidebar category list */
.sidebar-categories {
  list-style: none;
  padding: 0;
  margin: 0;
}
.sidebar-categories li {
  padding: 0.35rem 0;
  border-bottom: 1px dashed var(--border);
}
.sidebar-categories li:last-child {
  border-bottom: none;
}
.sidebar-categories a {
  color: var(--text-primary);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.2s;
}
.sidebar-categories a:hover {
  color: var(--accent);
}

/* Sidebar tag cloud */
.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}
.tag-cloud .badge {
  font-size: 0.78rem;
  font-weight: 500;
  padding: 0.35em 0.65em;
  text-decoration: none;
  transition: opacity 0.2s;
}
.tag-cloud .badge:hover {
  opacity: 0.8;
}

/* Sidebar mini calendar */
.mini-calendar {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.78rem;
}
.mini-calendar th {
  text-align: center;
  padding: 4px 0;
  font-weight: 600;
  color: var(--text-secondary);
  font-size: 0.7rem;
}
.mini-calendar td {
  text-align: center;
  padding: 2px 0;
  color: var(--text-primary);
  font-size: 0.78rem;
}
.mini-calendar td span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
}
.mini-calendar td.today span {
  background: var(--accent);
  color: #fff;
  font-weight: 800;
}

/* Hide sidebar in single column mode */
.home-layout-single .sidebar {
  display: none;
}