:root {
  --bg-primary: #fafafa;
  --bg-card: #ffffff;
  --text-primary: #111827;
  --text-secondary: #6b7280;
  --text-muted: #9ca3af;
  --border-color: #e5e7eb;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
}

* {
  box-sizing: border-box;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  margin: 0;
  padding: 0;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* Header */
.site-header {
  background-color: var(--bg-card);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(8px);
  background-color: rgba(255, 255, 255, 0.9);
}

.header-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 1rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.logo {
  height: 56px;
  width: auto;
}

.brand-text {
  display: flex;
  flex-direction: column;
  gap: 0.125rem;
}

.brand-name {
  font-size: 1.125rem;
  font-weight: 700;
  margin: 0;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.brand-tagline {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin: 0;
  font-weight: 400;
}

.nav-links {
  display: flex;
  gap: 1.5rem;
  align-items: center;
}

.nav-link {
  font-size: 0.925rem;
  font-weight: 500;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.15s ease;
  padding: 0.5rem 0;
  border-bottom: 2px solid transparent;
}

.nav-link:hover {
  color: var(--text-primary);
}

.nav-link.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* Footer */
.site-footer {
  margin-top: auto;
  background-color: var(--bg-card);
  border-top: 1px solid var(--border-color);
  padding: 2rem 0;
}

.footer-container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}

.footer-content {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.footer-logo {
  height: 40px;
  width: auto;
  opacity: 0.8;
}

.footer-text {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin: 0;
}

.footer-copyright {
  font-size: 0.8125rem;
  color: var(--text-muted);
  margin: 0;
}

.container {
  flex: 1;
  max-width: 1280px;
  margin: 0 auto;
  padding: 3rem 2rem;
  width: 100%;
}

.page-header {
  margin-bottom: 3rem;
}

h1 {
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0 0 0.5rem 0;
  letter-spacing: -0.025em;
}

.page-subtitle {
  font-size: 1.0625rem;
  color: var(--text-secondary);
  margin: 0 0 1.5rem 0;
  font-weight: 400;
}

/* Filters */
.filters {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

input[type="text"],
select {
  padding: 0.625rem 1rem;
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  font-size: 0.925rem;
  font-family: inherit;
  background-color: var(--bg-card);
  color: var(--text-primary);
  transition: all 0.15s ease;
  outline: none;
}

input[type="text"] {
  flex: 1;
  min-width: 240px;
}

input[type="text"]:focus,
select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

input[type="text"]::placeholder {
  color: var(--text-muted);
}

select {
  cursor: pointer;
  min-width: 160px;
}

/* Story Grid */
.story-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
}

.story-card {
  background: var(--bg-card);
  border-radius: 0.75rem;
  overflow: hidden;
  border: 1px solid var(--border-color);
  transition: all 0.2s ease;
  cursor: pointer;
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
}

.story-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  border-color: var(--accent);
}

.card-image {
  width: 100%;
  height: 240px;
  background-color: var(--border-color);
  overflow: hidden;
}

.card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

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

.card-content {
  padding: 1.25rem;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.card-meta {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 500;
}

.card-title {
  font-size: 1.125rem;
  margin: 0;
  font-weight: 600;
  line-height: 1.4;
  color: var(--text-primary);
}

.card-theme {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.story-theme {
  font-size: 0.9375rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-top: 0.75rem;
  font-weight: 400;
  font-style: italic;
}

.tags {
  margin-top: auto;
  padding-top: 0.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tag {
  background: var(--bg-primary);
  padding: 0.25rem 0.625rem;
  border-radius: 0.375rem;
  font-size: 0.75rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.card-tags {
  margin-top: auto;
  padding-top: 0.5rem;
  font-size: 0.8125rem;
  color: var(--text-muted);
  line-height: 1.4;
}

/* Story Detail */
.story-detail {
  max-width: 720px;
  margin: 0 auto;
  background: var(--bg-card);
  padding: 2.5rem;
  border-radius: 0.75rem;
  border: 1px solid var(--border-color);
}

.story-header {
  margin-bottom: 2rem;
}

.story-cover {
  max-width: 100%;
  height: auto;
  border-radius: 0.5rem;
  margin-bottom: 1.5rem;
}

.story-body {
  font-size: 1.0625rem;
  line-height: 1.75;
  white-space: pre-wrap;
  color: var(--text-primary);
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
  color: var(--accent);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.925rem;
  transition: color 0.15s ease;
}

.back-link:hover {
  color: var(--accent-hover);
}

/* Pagination */
.pagination {
  margin-top: 3rem;
  display: flex;
  justify-content: center;
}

.pagination-controls {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.page-btn {
  padding: 0.625rem 1.25rem;
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  background-color: var(--bg-card);
  color: var(--text-primary);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s ease;
  font-family: inherit;
}

.page-btn:hover:not(:disabled) {
  border-color: var(--accent);
  color: var(--accent);
}

.page-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.page-numbers {
  display: flex;
  align-items: center;
  gap: 0.375rem;
}

.page-number {
  min-width: 2.5rem;
  height: 2.5rem;
  padding: 0.5rem;
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  background-color: var(--bg-card);
  color: var(--text-primary);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s ease;
  font-family: inherit;
}

.page-number:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.page-number.active {
  background-color: var(--accent);
  border-color: var(--accent);
  color: white;
}

.page-ellipsis {
  padding: 0 0.25rem;
  color: var(--text-muted);
  font-size: 0.875rem;
}

.no-results {
  text-align: center;
  color: var(--text-secondary);
  font-size: 1.0625rem;
  padding: 3rem 0;
  grid-column: 1 / -1;
}

/* Responsive */
@media (max-width: 768px) {
  .container {
    padding: 2rem 1rem;
  }

  .header-container {
    padding: 1rem;
  }

  .story-detail {
    padding: 1.25rem;
  }

  h1 {
    font-size: 1.75rem;
  }

  .story-body {
    font-size: 1rem;
    overflow-wrap: break-word;
  }

  .story-grid {
    grid-template-columns: 1fr;
  }

  .filters {
    flex-direction: column;
  }

  input[type="text"],
  select {
    width: 100%;
  }
}