/* Default Theme - Simple & Clean */
:root {
  --color-primary: #3b82f6;
  --color-primary-dark: #2563eb;
  --color-secondary: #64748b;
  --color-accent: #10b981;
  --color-text: #1e293b;
  --color-text-light: #64748b;
  --color-bg: #ffffff;
  --color-bg-alt: #f8fafc;
  --color-border: #e2e8f0;
  --font-sans: system-ui, -apple-system, sans-serif;
  --container-max: 1200px;
  --radius: 8px;
  --shadow: 0 1px 3px rgba(0,0,0,0.1);
  --shadow-lg: 0 4px 6px rgba(0,0,0,0.1);
}

*, *::before, *::after { box-sizing: border-box; }

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  margin: 0;
}

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1rem;
}

.container--narrow {
  max-width: 800px;
}

/* Header */
.header {
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

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

.logo {
  text-decoration: none;
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--color-text);
}

.logo-text { color: var(--color-primary); }

.nav {
  display: flex;
  gap: 1.5rem;
}

.nav__link {
  text-decoration: none;
  color: var(--color-text);
  font-weight: 500;
  transition: color 0.2s;
}

.nav__link:hover { color: var(--color-primary); }

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
}

.mobile-nav {
  display: none;
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  padding: 1rem;
}

.mobile-nav.active { display: block; }

.mobile-nav__link {
  display: block;
  padding: 0.75rem 0;
  text-decoration: none;
  color: var(--color-text);
  border-bottom: 1px solid var(--color-border);
}

@media (max-width: 768px) {
  .nav { display: none; }
  .menu-toggle { display: flex; }
}

/* Main */
.main { min-height: 60vh; }

/* Hero */
.hero {
  background: var(--color-bg-alt);
  padding: 4rem 0;
  text-align: center;
}

.hero__title {
  font-size: 2.5rem;
  margin: 0 0 1rem;
}

.hero__text {
  color: var(--color-text-light);
  font-size: 1.125rem;
  margin: 0;
}

/* Page Header */
.page-header {
  padding: 3rem 0;
  background: var(--color-bg-alt);
}

.page-header__title {
  font-size: 2rem;
  margin: 0 0 0.5rem;
}

.page-header__text {
  color: var(--color-text-light);
  margin: 0 0 0.5rem;
}

.page-header__count {
  color: var(--color-text-light);
  font-size: 0.875rem;
}

/* Section */
.section {
  padding: 3rem 0;
}

.section__title {
  font-size: 1.5rem;
  margin: 0 0 2rem;
}

.section__footer {
  text-align: center;
  margin-top: 2rem;
}

/* Grid */
.grid {
  display: grid;
  gap: 1.5rem;
}

.grid--3 {
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
}

/* Card */
.card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: box-shadow 0.2s;
}

.card:hover { box-shadow: var(--shadow-lg); }

.card__image {
  display: block;
  aspect-ratio: 16/10;
  overflow: hidden;
}

.card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.card__body { padding: 1rem; }

.card__title {
  font-size: 1.125rem;
  margin: 0 0 0.5rem;
}

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

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

.card__text {
  color: var(--color-text-light);
  font-size: 0.875rem;
  margin: 0 0 0.75rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card__meta {
  display: flex;
  gap: 1rem;
  font-size: 0.75rem;
  color: var(--color-text-light);
}

.card__category {
  color: var(--color-primary);
  text-decoration: none;
}

/* Category Card */
.category-card {
  display: block;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  text-decoration: none;
  color: var(--color-text);
  transition: box-shadow 0.2s;
}

.category-card:hover { box-shadow: var(--shadow-lg); }

.category-card__image {
  width: 100%;
  aspect-ratio: 16/10;
  object-fit: cover;
}

.category-card__body { padding: 1rem; }

.category-card__title {
  font-size: 1.125rem;
  margin: 0 0 0.25rem;
}

.category-card__count {
  font-size: 0.875rem;
  color: var(--color-text-light);
}

/* Author Card */
.author-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 2rem 1rem;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  text-decoration: none;
  color: var(--color-text);
  transition: box-shadow 0.2s;
}

.author-card:hover { box-shadow: var(--shadow-lg); }

.author-card__avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  object-fit: cover;
  margin-bottom: 1rem;
}

.author-card__avatar--placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary);
  color: white;
  font-size: 2rem;
  font-weight: 700;
}

.author-card__name {
  font-size: 1.125rem;
  margin: 0 0 0.5rem;
}

.author-card__bio {
  font-size: 0.875rem;
  color: var(--color-text-light);
  margin: 0 0 0.5rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.author-card__count {
  font-size: 0.75rem;
  color: var(--color-text-light);
}

/* Author Profile */
.author-profile {
  display: flex;
  gap: 2rem;
  align-items: center;
}

.author-profile__avatar {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  object-fit: cover;
}

.author-profile__avatar--placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary);
  color: white;
  font-size: 3rem;
  font-weight: 700;
}

.author-profile__name {
  font-size: 1.75rem;
  margin: 0 0 0.5rem;
}

.author-profile__bio {
  color: var(--color-text-light);
  margin: 0 0 0.5rem;
}

.author-profile__count {
  font-size: 0.875rem;
  color: var(--color-text-light);
}

.social-links {
  display: flex;
  gap: 1rem;
  margin-top: 0.75rem;
}

.social-links a {
  color: var(--color-primary);
  text-decoration: none;
  font-size: 0.875rem;
}

/* Post Detail */
.post__header {
  padding: 3rem 0;
  background: var(--color-bg-alt);
}

.post__title {
  font-size: 2.5rem;
  margin: 0 0 1rem;
}

.post__desc {
  font-size: 1.25rem;
  color: var(--color-text-light);
  margin: 0 0 1rem;
}

.post__meta {
  display: flex;
  gap: 1rem;
  font-size: 0.875rem;
  color: var(--color-text-light);
}

.post__meta a {
  color: var(--color-primary);
  text-decoration: none;
}

.post__image {
  margin: 0;
}

.post__image img {
  width: 100%;
  max-height: 500px;
  object-fit: cover;
}

.post__content {
  padding: 3rem 0;
}

.post__content p { margin: 0 0 1.5rem; }
.post__content h2 { margin: 2rem 0 1rem; }
.post__content img { max-width: 100%; height: auto; }

/* Breadcrumb */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-size: 0.875rem;
  margin-bottom: 1rem;
}

.breadcrumb__link {
  color: var(--color-primary);
  text-decoration: none;
}

.breadcrumb__sep { color: var(--color-text-light); }
.breadcrumb__current { color: var(--color-text-light); }

/* Pagination */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1rem;
  margin-top: 2rem;
}

.pagination__link {
  color: var(--color-primary);
  text-decoration: none;
  padding: 0.5rem 1rem;
  border: 1px solid var(--color-primary);
  border-radius: var(--radius);
}

.pagination__link:hover {
  background: var(--color-primary);
  color: white;
}

.pagination__info {
  color: var(--color-text-light);
}

/* Button */
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  background: var(--color-primary);
  color: white;
  text-decoration: none;
  border-radius: var(--radius);
  font-weight: 500;
  transition: background 0.2s;
}

.btn:hover { background: var(--color-primary-dark); }

/* Search Form */
.search-form {
  display: flex;
  gap: 0.5rem;
  max-width: 500px;
  margin: 1rem auto 0;
}

.search-form__input {
  flex: 1;
  padding: 0.75rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-size: 1rem;
}

.search-form__btn {
  padding: 0.75rem 1.5rem;
  background: var(--color-primary);
  color: white;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
}

/* Empty State */
.empty {
  text-align: center;
  padding: 4rem 2rem;
  color: var(--color-text-light);
}

/* Tags Cloud */
.tags-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  text-decoration: none;
  color: var(--color-text);
  font-size: 0.875rem;
  transition: all 0.2s;
}

.tag:hover {
  background: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
}

.tag__count {
  background: var(--color-border);
  padding: 0.125rem 0.375rem;
  border-radius: 4px;
  font-size: 0.75rem;
}

.tag:hover .tag__count {
  background: rgba(255,255,255,0.2);
}

/* Footer */
.footer {
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
  padding: 2rem 0;
  text-align: center;
  color: var(--color-text-light);
  font-size: 0.875rem;
}

@media (max-width: 640px) {
  .hero__title { font-size: 1.75rem; }
  .page-header__title { font-size: 1.5rem; }
  .post__title { font-size: 1.75rem; }
  .author-profile { flex-direction: column; text-align: center; }
}