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

:root {
  /* Clean Architecture (Minimal) Colors */
  --background-color: #ffffff;
  --text-color: #1f2937; /* Gray 900 */
  --muted-color: #6b7280; /* Gray 500 */
  
  --primary-color: #2563eb; /* Blue 600 */
  --secondary-color: #4b5563; /* Gray 600 */
  
  --border-color: #e5e7eb; /* Gray 200 */
  --surface-color: #f9fafb; /* Gray 50 */
  
  --heading-font: "Inter", system-ui, -apple-system, sans-serif;
  --body-font: "Inter", system-ui, -apple-system, sans-serif;
  
  --base-font-size: 32px;
  --text-size: 18pt;
  --h1-size: 48pt;
  --h2-size: 36pt;
  --h3-size: 24pt;
  
  --box-bg: #f9fafb;
  --box-border: #e5e7eb;
}

body, .reveal-viewport {
  background-color: var(--background-color);
}

.reveal {
  font-family: var(--body-font);
  color: var(--text-color);
}

.reveal h1, .reveal h2, .reveal h3 {
  font-family: var(--heading-font);
  color: var(--text-color);
  font-weight: 700;
  letter-spacing: -0.03em;
}

.reveal h1 { color: #111827; }
.reveal h2 { color: #374151; }

.reveal p, .reveal li {
  font-size: var(--text-size);
  color: #4b5563;
  line-height: 1.7;
}

.reveal strong {
  color: #111827;
  font-weight: 600;
}

/* Minimalist lines and shapes */
.section-divider h2::after {
  content: "";
  display: block;
  width: 60px;
  height: 4px;
  background: var(--primary-color);
  margin: 30px auto 0;
  border-radius: 2px;
}

/* Components */
.box {
  background: var(--box-bg);
  border: 1px solid var(--box-border);
  border-radius: 12px;
  padding: 30px;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
}

.callout {
  border-left: 4px solid var(--primary-color);
  background: #eff6ff; /* Blue 50 */
  padding: 20px 25px;
  border-radius: 0 8px 8px 0;
  color: #1e3a8a; /* Blue 900 */
}

.callout-gray {
  border-left-color: #9ca3af;
  background: #f3f4f6;
  color: #374151;
}

/* Code Blocks - Clean Light Theme */
pre code {
  background: #f3f4f6;
  border: 1px solid #e5e7eb;
  border-radius: 8px;
  color: #1f2937;
  box-shadow: none;
  font-family: "Menlo", "Monaco", monospace;
}

/* Mermaid diagrams */
.mermaid { width: 100%; }
.mermaid svg { max-width: 100%; height: auto; }