:root {
  --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Menlo', 'Courier New', monospace;
  
  --bg-primary: #ffffff;
  --bg-secondary: #f8fafc;
  --bg-accent: #f1f5f9;
  
  --text-primary: #0f172a;
  --text-secondary: #334155;
  --text-muted: #64748b;
  
  --border-color: #e2e8f0;
  
  --color-primary: #4f46e5;
  --color-primary-hover: #4338ca;
  
  --state-published-bg: #dcfce7;
  --state-published-text: #166534;
  --state-discussion-bg: #dbeafe;
  --state-discussion-text: #1e40af;
  --state-accepted-bg: #fef9c3;
  --state-accepted-text: #854d0e;
  --state-committed-bg: #f3e8ff;
  --state-committed-text: #6b21a8;
  --state-abandoned-bg: #f1f5f9;
  --state-abandoned-text: #475569;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-accent: #334155;
    
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    
    --border-color: #334155;
    
    --color-primary: #818cf8;
    --color-primary-hover: #a5b4fc;
    
    --state-published-bg: rgba(22, 101, 52, 0.3);
    --state-published-text: #86efac;
    --state-discussion-bg: rgba(30, 64, 175, 0.3);
    --state-discussion-text: #93c5fd;
    --state-accepted-bg: rgba(133, 77, 14, 0.3);
    --state-accepted-text: #fde047;
    --state-committed-bg: rgba(107, 33, 168, 0.3);
    --state-committed-text: #e9d5ff;
    --state-abandoned-bg: rgba(71, 85, 105, 0.3);
    --state-abandoned-text: #cbd5e1;
  }
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.75;
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
}

.zds-container {
  max-width: 860px;
  margin: 4rem auto;
  padding: 0 2rem;
}

.zds-back-link {
  margin-bottom: 2rem;
  font-size: 0.95rem;
  font-weight: 600;
}

.zds-back-link a {
  color: var(--text-muted) !important;
  border-bottom: none !important;
  text-decoration: none;
  transition: color 0.15s ease;
}

.zds-back-link a:hover {
  color: var(--color-primary) !important;
}

.zds-header {
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 2.5rem;
  margin-bottom: 3rem;
}

.zds-badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.35rem 0.85rem;
  border-radius: 9999px;
  margin-bottom: 1.25rem;
}

.zds-badge.published { background: var(--state-published-bg); color: var(--state-published-text); }
.zds-badge.discussion { background: var(--state-discussion-bg); color: var(--state-discussion-text); }
.zds-badge.accepted { background: var(--state-accepted-bg); color: var(--state-accepted-text); }
.zds-badge.committed { background: var(--state-committed-bg); color: var(--state-committed-text); }
.zds-badge.abandoned { background: var(--state-abandoned-bg); color: var(--state-abandoned-text); }

.zds-title {
  font-size: 2.5rem;
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.03em;
  margin: 0 0 2rem 0;
}

.zds-meta-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.25rem;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1.5rem;
}

.zds-meta-item {
  display: flex;
  flex-direction: column;
}

.zds-meta-label {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-muted);
  letter-spacing: 0.05em;
  margin-bottom: 0.35rem;
}

.zds-meta-val {
  font-size: 0.95rem;
  color: var(--text-secondary);
  font-weight: 600;
}

/* Document Content Styling */
h1, h2, h3, h4 {
  color: var(--text-primary);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.3;
}

h2 {
  font-size: 1.8rem;
  margin-top: 3.5rem;
  margin-bottom: 1.25rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border-color);
}

h3 {
  font-size: 1.4rem;
  margin-top: 2.5rem;
  margin-bottom: 1rem;
}

p {
  margin-top: 0;
  margin-bottom: 1.6rem;
  font-size: 1.075rem;
  color: var(--text-secondary);
}

ul, ol {
  margin-top: 0;
  margin-bottom: 1.6rem;
  padding-left: 1.75rem;
}

li {
  margin-bottom: 0.5rem;
  font-size: 1.05rem;
  color: var(--text-secondary);
}

code {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  background-color: var(--bg-secondary);
  padding: 0.2rem 0.45rem;
  border-radius: 6px;
  border: 1px solid var(--border-color);
}

pre {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1.5rem;
  overflow-x: auto;
  margin-bottom: 1.8rem;
}

pre code {
  background-color: transparent;
  padding: 0;
  border: none;
  font-size: 0.9rem;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  border-bottom: 1px dashed var(--color-primary);
  transition: all 0.2s ease;
}

a:hover {
  color: var(--color-primary-hover);
  border-bottom-style: solid;
}

/* Index Page Specifics */
.zds-index-header {
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 2rem;
  margin-bottom: 3rem;
}

.zds-index-header h1 {
  font-size: 3rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin: 0 0 1rem 0;
}

.zds-index-header p {
  font-size: 1.2rem;
  color: var(--text-secondary);
  margin: 0;
}

.zds-index-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 2rem;
  margin-bottom: 2rem;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.zds-index-card:hover {
  transform: translateY(-2px);
  border-color: var(--color-primary);
  box-shadow: 0 12px 24px -10px rgba(0, 0, 0, 0.08);
}

.zds-card-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0 0 0.75rem 0;
}

.zds-card-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  line-height: 1.6;
}

.zds-card-links {
  display: flex;
  gap: 1.5rem;
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
}

.zds-card-links a {
  border-bottom: 2px solid transparent;
}

.zds-card-links a:hover {
  border-bottom: 2px solid var(--color-primary-hover);
}

.zds-card-meta {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0.75rem;
  margin-top: 1.5rem;
  font-size: 0.85rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border-color);
  padding-top: 1.25rem;
}

.zds-card-meta span {
  display: inline-block;
}