/* Cosplay - 案例展示风格 CSS */
/* 主色调: #00bcd4 (cyan) */

:root {
  --accent-color: #00bcd4;
  --accent-dark: #0097a7;
  --bg-primary: #0a0a0f;
  --bg-secondary: #12121a;
  --bg-card: #1a1a24;
  --text-primary: #ffffff;
  --text-secondary: #a0a0b0;
  --text-muted: #6a6a7a;
  --border-color: #2a2a3a;
  --gradient-accent: linear-gradient(135deg, #00bcd4 0%, #00838f 100%);
  --shadow-glow: 0 0 30px rgba(0, 188, 212, 0.3);
  --transition: all 0.3s ease;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
}

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

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

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

.header-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent-color);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.logo::before {
  content: '◆';
  color: var(--accent-color);
}

.nav {
  display: flex;
  gap: 2rem;
}

.nav a {
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
}

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

/* Breadcrumb */
.breadcrumb {
  background: var(--bg-secondary);
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border-color);
}

.breadcrumb-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.breadcrumb a {
  color: var(--text-secondary);
}

.breadcrumb a:hover {
  color: var(--accent-color);
}

.breadcrumb span {
  margin: 0 0.5rem;
  color: var(--text-muted);
}

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

/* Split Screen Layout */
.split-screen {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
  min-height: 500px;
  margin-bottom: 3rem;
}

.split-panel {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 2.5rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.split-panel::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-accent);
}

.split-panel h2 {
  font-size: 1.75rem;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.split-panel .subtitle {
  color: var(--accent-color);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 1rem;
}

.split-panel p {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  line-height: 1.8;
}

.cta-button {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--gradient-accent);
  color: var(--text-primary);
  padding: 0.875rem 1.5rem;
  border-radius: 6px;
  font-weight: 600;
  font-size: 0.9rem;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  align-self: flex-start;
}

.cta-button:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
  color: var(--text-primary);
}

/* Section Title */
.section-title {
  font-size: 1.25rem;
  margin-bottom: 1.5rem;
  padding-bottom: 0.75rem;
  border-bottom: 2px solid var(--border-color);
  position: relative;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 60px;
  height: 2px;
  background: var(--accent-color);
}

/* Article Grid */
.article-sections {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-bottom: 3rem;
}

.article-list {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1.5rem;
}

.article-list h3 {
  font-size: 1rem;
  color: var(--accent-color);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.article-list ul {
  list-style: none;
}

.article-list li {
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border-color);
}

.article-list li:last-child {
  border-bottom: none;
}

.article-list a {
  color: var(--text-secondary);
  font-size: 0.9rem;
  display: block;
}

.article-list a:hover {
  color: var(--accent-color);
}

/* Category Grid */
.category-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
  margin-bottom: 3rem;
}

.category-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 2rem;
}

.category-card h3 {
  font-size: 1.25rem;
  margin-bottom: 1rem;
  color: var(--accent-color);
}

.category-items {
  list-style: none;
  margin-bottom: 1.5rem;
}

.category-items li {
  padding: 0.5rem 0;
  color: var(--text-secondary);
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.category-items li::before {
  content: '›';
  color: var(--accent-color);
}

.view-all {
  display: inline-block;
  padding: 0.5rem 1rem;
  border: 1px solid var(--accent-color);
  border-radius: 4px;
  font-size: 0.85rem;
  color: var(--accent-color);
}

.view-all:hover {
  background: var(--accent-color);
  color: var(--text-primary);
}

/* Article Detail */
.article-detail {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 2.5rem;
  margin-bottom: 3rem;
}

.article-header {
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-color);
}

.article-header h1 {
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

.article-meta {
  color: var(--text-muted);
  font-size: 0.85rem;
}

.article-content {
  color: var(--text-secondary);
  line-height: 1.8;
}

.article-content p {
  margin-bottom: 1rem;
}

/* 404 Page */
.error-page {
  min-height: 60vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 4rem 2rem;
}

.error-code {
  font-size: 8rem;
  font-weight: 700;
  color: var(--accent-color);
  line-height: 1;
  margin-bottom: 1rem;
  text-shadow: var(--shadow-glow);
}

.error-title {
  font-size: 1.5rem;
  margin-bottom: 1rem;
}

.error-message {
  color: var(--text-secondary);
  margin-bottom: 2rem;
  max-width: 400px;
}

/* Recommended Section */
.recommended-section {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1.5rem;
  margin-bottom: 2rem;
}

.recommended-section h3 {
  font-size: 1rem;
  color: var(--accent-color);
  margin-bottom: 1rem;
}

.recommended-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.recommended-links a {
  padding: 0.5rem 1rem;
  background: var(--bg-secondary);
  border-radius: 4px;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.recommended-links a:hover {
  background: var(--accent-color);
  color: var(--text-primary);
}

/* Two Column Layout */
.two-column {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
  margin-bottom: 3rem;
}

/* Footer */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 2rem 0;
  margin-top: 4rem;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer p {
  color: var(--text-muted);
  font-size: 0.85rem;
}

.footer-links {
  display: flex;
  gap: 1.5rem;
}

.footer-links a {
  color: var(--text-secondary);
  font-size: 0.85rem;
}

/* Responsive Design */
@media (max-width: 968px) {
  .split-screen,
  .category-grid,
  .two-column {
    grid-template-columns: 1fr;
  }

  .article-sections {
    grid-template-columns: 1fr;
  }

  .split-panel {
    min-height: 300px;
  }
}

@media (max-width: 640px) {
  .header-content {
    flex-direction: column;
    gap: 1rem;
  }

  .nav {
    gap: 1rem;
  }

  .main {
    padding: 1rem;
  }

  .split-panel {
    padding: 1.5rem;
  }

  .split-panel h2 {
    font-size: 1.25rem;
  }

  .error-code {
    font-size: 5rem;
  }

  .footer-content {
    flex-direction: column;
    text-align: center;
  }
}