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

/* CSS Variables for Themes */
:root {
  --font-sans: 'Inter', sans-serif;
  --font-display: 'Outfit', sans-serif;
  
  /* Light Mode Variables */
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-tertiary: #f1f5f9;
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  --accent: #6366f1;
  --accent-gradient: linear-gradient(135deg, #4f46e5 0%, #06b6d4 100%);
  --accent-soft: rgba(99, 102, 241, 0.08);
  --border-color: #e2e8f0;
  --card-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.05), 0 2px 4px -2px rgb(0 0 0 / 0.05);
  --card-hover-shadow: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  --glass-bg: rgba(255, 255, 255, 0.7);
  --glass-border: rgba(226, 232, 240, 0.8);
  
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="dark"] {
  /* Dark Mode Variables */
  --bg-primary: #0b0f19;
  --bg-secondary: #131c2e;
  --bg-tertiary: #1e293b;
  --text-primary: #f8fafc;
  --text-secondary: #cbd5e1;
  --text-muted: #64748b;
  --accent: #818cf8;
  --accent-gradient: linear-gradient(135deg, #6366f1 0%, #22d3ee 100%);
  --accent-soft: rgba(129, 140, 248, 0.15);
  --border-color: #1e293b;
  --card-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.2), 0 2px 4px -2px rgb(0 0 0 / 0.2);
  --card-hover-shadow: 0 20px 25px -5px rgb(0 0 0 / 0.4), 0 8px 10px -6px rgb(0 0 0 / 0.4);
  --glass-bg: rgba(19, 28, 46, 0.7);
  --glass-border: rgba(30, 41, 59, 0.8);
}

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

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-sans);
  line-height: 1.6;
  transition: background-color 0.5s ease, color 0.3s ease;
  overflow-x: hidden;
}

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

a:hover {
  filter: brightness(1.2);
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
}

/* App Layout */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--glass-border);
  padding: 1rem 2rem;
  transition: var(--transition);
}

.navbar-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 800;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  list-style: none;
}

.nav-link {
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.95rem;
}

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

.theme-toggle {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-primary);
  padding: 0.5rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  background-color: var(--bg-tertiary);
}

.theme-toggle:hover {
  transform: rotate(15deg);
}

.theme-toggle svg {
  width: 1.25rem;
  height: 1.25rem;
}

/* Dark/Light Icons toggling */
.theme-toggle .sun-icon { display: block; }
.theme-toggle .moon-icon { display: none; }
[data-theme="dark"] .theme-toggle .sun-icon { display: none; }
[data-theme="dark"] .theme-toggle .moon-icon { display: block; }

/* Hero Section */
.hero {
  padding: 6rem 2rem 4rem;
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
  position: relative;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50px;
  left: 50%;
  transform: translateX(-50%);
  width: 300px;
  height: 300px;
  background: var(--accent-gradient);
  filter: blur(100px);
  opacity: 0.15;
  z-index: -1;
  border-radius: 50%;
}

.hero h1 {
  font-size: 3.5rem;
  letter-spacing: -0.03em;
  margin-bottom: 1.2rem;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero p {
  font-size: 1.25rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 2.5rem;
}

/* Search and Filters */
.search-container {
  max-width: 600px;
  margin: 0 auto 3rem;
  display: flex;
  gap: 0.75rem;
  background: var(--bg-secondary);
  padding: 0.4rem;
  border-radius: 9999px;
  border: 1px solid var(--border-color);
  box-shadow: var(--card-shadow);
  transition: var(--transition);
}

.search-container:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.search-input {
  flex: 1;
  border: none;
  background: none;
  padding: 0.8rem 1.5rem;
  font-family: var(--font-sans);
  font-size: 1rem;
  color: var(--text-primary);
  outline: none;
}

.search-button {
  background: var(--accent-gradient);
  border: none;
  color: white;
  padding: 0.8rem 1.8rem;
  border-radius: 9999px;
  font-family: var(--font-display);
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.search-button:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
}

/* Category pills */
.categories-tabs {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 3rem;
  padding: 0 1rem;
}

.category-tab {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 0.5rem 1.2rem;
  border-radius: 9999px;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
}

.category-tab:hover, .category-tab.active {
  background: var(--accent-gradient);
  color: white;
  border-color: transparent;
  transform: translateY(-1px);
}

/* Main content grid */
.main-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem 6rem;
}

.posts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 2.5rem;
}

/* Post Card */
.post-card {
  background-color: var(--bg-secondary);
  border-radius: 1.25rem;
  overflow: hidden;
  border: 1px solid var(--border-color);
  box-shadow: var(--card-shadow);
  display: flex;
  flex-direction: column;
  height: 100%;
  transition: var(--transition);
}

.post-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--card-hover-shadow);
  border-color: var(--accent);
}

.post-card-image {
  height: 200px;
  background-color: var(--bg-tertiary);
  position: relative;
  overflow: hidden;
}

.post-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

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

.post-card-badge {
  position: absolute;
  top: 1rem;
  left: 1rem;
  background: var(--accent-gradient);
  color: white;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
}

.post-card-content {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.post-card-meta {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
  display: flex;
  gap: 1rem;
}

.post-card-title {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  height: 3rem;
  line-height: 1.2;
}

.post-card-excerpt {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  flex: 1;
}

.post-card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: auto;
  padding-top: 1rem;
  border-top: 1px solid var(--border-color);
}

.post-card-author {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.post-card-author-img {
  width: 1.75rem;
  height: 1.75rem;
  border-radius: 50%;
  background-color: var(--border-color);
}

.post-card-link {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--accent);
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.post-card-link svg {
  width: 1rem;
  height: 1rem;
  transition: var(--transition);
}

.post-card:hover .post-card-link svg {
  transform: translateX(3px);
}

/* Pagination */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.5rem;
  margin-top: 4rem;
}

.page-btn {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  width: 2.75rem;
  height: 2.75rem;
  border-radius: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.page-btn:hover:not(:disabled), .page-btn.active {
  background: var(--accent-gradient);
  color: white;
  border-color: transparent;
}

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

/* Single Post Page styling */
.post-header {
  padding: 5rem 2rem 3rem;
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.post-meta-details {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1.5rem;
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
}

.post-meta-item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.post-title-large {
  font-size: 3rem;
  letter-spacing: -0.02em;
  margin-bottom: 1.5rem;
}

.post-category-badge {
  background-color: var(--accent-soft);
  color: var(--accent);
  padding: 0.4rem 1rem;
  border-radius: 9999px;
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
}

.post-banner-image {
  max-width: 900px;
  margin: 0 auto 3rem;
  height: 450px;
  border-radius: 1.5rem;
  overflow: hidden;
  border: 1px solid var(--border-color);
  box-shadow: var(--card-shadow);
}

.post-banner-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.post-body-container {
  max-width: 800px;
  margin: 0 auto;
  padding: 0 2rem 6rem;
}

.post-content-body {
  font-size: 1.125rem;
  color: var(--text-secondary);
  line-height: 1.8;
}

.post-content-body p {
  margin-bottom: 1.5rem;
}

.post-content-body img {
  max-width: 100%;
  height: auto;
  border-radius: 1rem;
  margin: 1.5rem 0;
  box-shadow: var(--card-shadow);
  border: 1px solid var(--border-color);
}

.post-content-body h2 {
  font-size: 1.75rem;
  margin: 2.5rem 0 1rem;
  color: var(--text-primary);
}

.post-content-body h3 {
  font-size: 1.4rem;
  margin: 2rem 0 1rem;
  color: var(--text-primary);
}

.post-content-body ul, .post-content-body ol {
  margin-bottom: 1.5rem;
  padding-left: 2rem;
}

.post-content-body li {
  margin-bottom: 0.5rem;
}

/* Gallery layout in content */
.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1rem;
  margin: 2rem 0;
  padding: 1rem;
  background-color: var(--bg-tertiary);
  border-radius: 1rem;
  border: 1px solid var(--border-color);
}

.gallery-item {
  margin: 0 !important;
  border-radius: 0.5rem;
  overflow: hidden;
}

.gallery-item img {
  margin: 0 !important;
  width: 100%;
  height: 150px !important;
  object-fit: cover;
  transition: var(--transition);
}

.gallery-item img:hover {
  transform: scale(1.05);
}

/* Alert box (for archived picasa galleries) */
.gallery-archive-alert {
  background-color: var(--bg-tertiary);
  border-left: 4px solid var(--accent);
  padding: 1.25rem;
  border-radius: 0.5rem;
  margin: 2.5rem 0;
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.gallery-archive-alert svg {
  color: var(--accent);
  width: 1.5rem;
  height: 1.5rem;
  flex-shrink: 0;
  margin-top: 0.2rem;
}

.gallery-archive-alert-title {
  font-weight: 700;
  margin-bottom: 0.25rem;
  color: var(--text-primary);
  font-family: var(--font-display);
}

.gallery-archive-alert-desc {
  font-size: 0.95rem;
  color: var(--text-secondary);
}

/* Tags cloud */
.post-tags-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-color);
}

.post-tag {
  background-color: var(--bg-tertiary);
  color: var(--text-secondary);
  padding: 0.3rem 0.8rem;
  border-radius: 9999px;
  font-size: 0.8rem;
  font-weight: 500;
}

.post-tag:hover {
  background-color: var(--accent-soft);
  color: var(--accent);
}

/* Footer styling */
.site-footer {
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 3rem 2rem;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.9rem;
}

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

/* Back button */
.back-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: 2rem;
  background-color: var(--bg-secondary);
  padding: 0.5rem 1rem;
  border-radius: 0.75rem;
  border: 1px solid var(--border-color);
  box-shadow: var(--card-shadow);
}

.back-btn:hover {
  transform: translateX(-3px);
  color: var(--accent);
  border-color: var(--accent);
}

.back-btn svg {
  width: 1rem;
  height: 1rem;
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .hero h1 {
    font-size: 2.5rem;
  }
  
  .post-title-large {
    font-size: 2.25rem;
  }
  
  .post-banner-image {
    height: 250px;
    border-radius: 1rem;
  }
  
  .posts-grid {
    grid-template-columns: 1fr;
  }
  
  .navbar-container {
    padding: 0;
  }
}