/* Civic Excellence Design System Override */

/* Font: Public Sans */
@import url('https://fonts.googleapis.com/css2?family=Public+Sans:wght@400;500;600;700&display=swap');

/* Design Tokens - Civic Excellence */
:root {
  /* Colors */
  --surface: #f9f9f9;
  --surface-dim: #dadada;
  --surface-bright: #f9f9f9;
  --surface-container-lowest: #ffffff;
  --surface-container-low: #f3f3f3;
  --surface-container: #eeeeee;
  --surface-container-high: #e8e8e8;
  --surface-container-highest: #e2e2e2;
  --on-surface: #1b1b1b;
  --on-surface-variant: #444653;
  --inverse-surface: #303030;
  --inverse-on-surface: #f1f1f1;
  --outline: #747684;
  --outline-variant: #c4c5d5;
  --surface-tint: #764aa0;

  /* Primary: Imperial Purple */
  --primary: #502379;
  --on-primary: #ffffff;
  --primary-container: #53267c;
  --on-primary-container: #c494f1;
  --inverse-primary: #deb7ff;

  /* Secondary: Vibrant Gold */
  --secondary: #785a00;
  --on-secondary: #ffffff;
  --secondary-container: #fec321;
  --on-secondary-container: #6e5200;

  /* Tertiary: Vermillion */
  --tertiary: #520d00;
  --on-tertiary: #ffffff;
  --tertiary-container: #791700;
  --on-tertiary-container: #ff8567;

  /* Error */
  --error: #ba1a1a;
  --on-error: #ffffff;
  --error-container: #ffdad6;
  --on-error-container: #93000a;

  /* Fixed tones */
  --primary-fixed: #f0dbff;
  --primary-fixed-dim: #deb7ff;
  --on-primary-fixed: #2c0050;
  --on-primary-fixed-variant: #5d3186;
  --secondary-fixed: #ffdf9c;
  --secondary-fixed-dim: #f8be19;
  --on-secondary-fixed: #251a00;
  --on-secondary-fixed-variant: #5b4300;
  --tertiary-fixed: #ffdad2;
  --tertiary-fixed-dim: #ffb4a2;
  --on-tertiary-fixed: #3c0700;
  --on-tertiary-fixed-variant: #8a1c00;

  /* Background & surface */
  --background: #f9f9f9;
  --on-background: #1b1b1b;
  --surface-variant: #e2e2e2;

  /* Typography */
  --font-family: 'Public Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  /* Spacing */
  --spacing-base: 8px;
  --container-max-width: 1280px;
  --gutter: 24px;
  --margin-mobile: 16px;
  --margin-desktop: 40px;

  /* Border radius */
  --radius-sm: 0.125rem;
  --radius-default: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;
  --radius-full: 9999px;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  background-color: var(--background);
  color: var(--on-background);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-family);
  font-weight: 700;
  line-height: 1.3;
  color: var(--on-surface);
  margin-bottom: 1rem;
}

h1 {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

h2 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-top: 2rem;
}

h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-top: 1.5rem;
}

p {
  font-size: 1rem;
  line-height: 1.6;
  color: var(--on-surface-variant);
  margin-bottom: 1rem;
}

a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--on-primary-fixed-variant);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* Layout */
.container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

.section {
  padding: 2rem 0;
  background-color: var(--background);
}

.section-alt {
  background-color: var(--surface-container-lowest);
}

/* Hero */
.hero {
  padding: 2rem 0;
  background-color: var(--surface-container-lowest);
  border-bottom: 1px solid var(--outline-variant);
}

.hero h1 {
  font-size: 3rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
  color: var(--primary);
}

.hero-subtitle {
  font-size: 1.5rem;
  font-weight: 400;
  color: var(--on-surface-variant);
  margin-bottom: 1.5rem;
}

.hero-description {
  font-size: 1.125rem;
  line-height: 1.7;
  color: var(--on-surface-variant);
  max-width: 640px;
}

/* Section titles */
.section-title {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--primary);
  margin-bottom: 0.5rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  font-family: var(--font-family);
  font-size: 0.9375rem;
  font-weight: 600;
  line-height: 1.4;
  border-radius: var(--radius-default);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
}

.btn-primary {
  background-color: var(--primary);
  color: var(--on-primary);
  border-color: var(--primary);
}

.btn-primary:hover {
  background-color: var(--on-primary-fixed-variant);
  border-color: var(--on-primary-fixed-variant);
  color: var(--on-primary);
  text-decoration: none;
}

.btn-accent {
  background-color: var(--secondary-container);
  color: var(--on-secondary-container);
  border-color: var(--secondary-container);
}

.btn-accent:hover {
  background-color: var(--secondary-fixed-dim);
  border-color: var(--secondary-fixed-dim);
  color: var(--on-secondary-fixed);
  text-decoration: none;
}

.btn-secondary {
  background-color: transparent;
  color: var(--primary);
  border-color: var(--primary);
}

.btn-secondary:hover {
  background-color: var(--primary-fixed);
  text-decoration: none;
}

/* Cards */
.card {
  background-color: var(--surface-container-lowest);
  border: 1px solid var(--outline-variant);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
  border-color: var(--primary);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

/* Blog cards */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.blog-card {
  background-color: var(--surface-container-lowest);
  border: 1px solid var(--outline-variant);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.blog-card:hover {
  border-color: var(--primary);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.blog-card img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  display: block;
}

.blog-content {
  padding: 1.5rem;
}

.blog-meta {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--outline);
  margin-bottom: 0.75rem;
  letter-spacing: 0.01em;
}

.blog-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--on-surface);
  margin-bottom: 0.75rem;
  line-height: 1.3;
}

.blog-card p {
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--on-surface-variant);
  margin-bottom: 1.25rem;
}

.read-more {
  display: inline-flex;
  align-items: center;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--primary);
  text-decoration: none;
  letter-spacing: 0.01em;
}

.read-more:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* Experiment cards */
.experiments-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.experiment-card {
  background-color: var(--surface-container-lowest);
  border: 1px solid var(--outline-variant);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.experiment-card:hover {
  border-color: var(--primary);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
}

.experiment-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.experiment-icon {
  font-size: 1.5rem;
  line-height: 1;
}

.experiment-status {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.25rem 0.625rem;
  border-radius: var(--radius-full);
  line-height: 1;
}

.status-active {
  background-color: var(--primary-fixed);
  color: var(--on-primary-fixed-variant);
}

.status-planning {
  background-color: var(--secondary-fixed);
  color: var(--on-secondary-fixed-variant);
}

.experiment-card h3 {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--on-surface);
  margin-bottom: 0.75rem;
}

.experiment-card p {
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--on-surface-variant);
  margin-bottom: 1rem;
}

.experiment-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}

.experiment-tech span {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--on-surface-variant);
  background-color: var(--surface-container);
  border: 1px solid var(--outline-variant);
  border-radius: var(--radius-sm);
  padding: 0.25rem 0.5rem;
  letter-spacing: 0.01em;
}

/* CTA Section */
.cta-section {
  padding: 2rem 0;
  background-color: var(--primary);
  color: var(--on-primary);
  text-align: center;
}

.cta-section h2 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--on-primary);
  margin-bottom: 0.75rem;
}

.cta-section p {
  font-size: 1.125rem;
  color: var(--on-primary-container);
  margin-bottom: 2rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.cta-section .btn {
  margin: 0.5rem;
}

/* Experiments Section - Purple variant */
.experiments-section-purple {
  padding: 2rem 0;
  background-color: var(--primary);
  color: var(--on-primary);
}

.experiments-section-purple .section-title {
  color: var(--on-primary);
}

.experiments-section-purple .experiment-card {
  background-color: var(--surface-container-lowest);
  border: 1px solid var(--outline-variant);
}

.experiments-section-purple .experiment-card:hover {
  border-color: var(--primary);
}

.experiments-section-purple .experiment-card h3 {
  color: var(--on-surface);
}

.experiments-section-purple .experiment-card p {
  color: var(--on-surface-variant);
}

.experiments-section-purple .experiment-status.status-active {
  background-color: var(--on-primary);
  color: var(--primary);
}

.experiments-section-purple .experiment-status.status-planning {
  background-color: var(--secondary-container);
  color: var(--on-secondary-container);
}

.experiments-section-purple .experiment-tech span {
  color: var(--on-surface-variant);
  background-color: var(--surface-container);
  border-color: var(--outline-variant);
}

.experiments-section-purple .read-more {
  color: var(--primary);
}

.experiments-section-purple .read-more:hover {
  color: var(--on-primary-fixed-variant);
}

/* Footer */
.site-footer {
  background-color: var(--inverse-surface);
  color: var(--inverse-on-surface);
  padding: 3rem 0 1.5rem;
  font-size: 0.9375rem;
}

.footer-inner {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-col h4 {
  font-size: 0.875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--inverse-on-surface);
  margin-bottom: 1rem;
}

.footer-col a {
  display: block;
  color: var(--on-primary-container);
  text-decoration: none;
  font-size: 0.9375rem;
  margin-bottom: 0.5rem;
  transition: color 0.2s ease;
}

.footer-col a:hover {
  color: var(--inverse-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  padding-top: 1.5rem;
  text-align: center;
  font-size: 0.875rem;
  color: rgba(241, 241, 241, 0.7);
}

/* Blog Navigation */
.blog-nav {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 2rem;
  font-size: 0.9375rem;
}

.blog-nav a {
  color: var(--primary);
  font-weight: 500;
  text-decoration: none;
}

.blog-nav a:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.blog-nav .current {
  font-weight: 600;
  color: var(--on-surface);
}

.blog-nav .nav-divider {
  color: var(--outline);
}

/* Blog body typography */
.blog-body {
  max-width: 720px;
  margin: 0 auto;
  line-height: 1.8;
  color: var(--text);
}

.blog-body h2 {
  font-size: 1.75rem;
  font-weight: 700;
  margin: 2.5rem 0 1rem;
  color: var(--on-surface);
  line-height: 1.3;
}

.blog-body h3 {
  font-size: 1.35rem;
  font-weight: 700;
  margin: 2rem 0 0.75rem;
  color: var(--on-surface);
}

.blog-body p {
  margin-bottom: 1.5rem;
  font-size: 1.05rem;
}

.blog-body ul,
.blog-body ol {
  margin-bottom: 1.5rem;
  padding-left: 1.5rem;
}

.blog-body li {
  margin-bottom: 0.5rem;
}

.blog-body blockquote {
  border-left: 4px solid var(--primary);
  padding-left: 1.5rem;
  margin: 2rem 0;
  font-style: italic;
  color: var(--tertiary);
  background: var(--bg-section-alt);
  padding: 1rem 1.5rem;
  border-radius: 0 8px 8px 0;
}

.blog-body strong {
  color: var(--primary-dark);
  font-weight: 700;
}

.blog-body a {
  color: var(--primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.blog-body a:hover {
  color: var(--on-primary-fixed-variant);
}

.blog-body code {
  background: var(--bg-section-alt);
  padding: 0.2rem 0.4rem;
  border-radius: 4px;
  font-family: 'SF Mono', 'Fira Code', 'Fira Mono', Menlo, Consolas, monospace;
  font-size: 0.9em;
  color: var(--tertiary);
}

.blog-body pre {
  background: var(--surface-container);
  padding: 1.5rem;
  border-radius: var(--radius-md);
  overflow-x: auto;
  margin: 1.5rem 0;
  border: 1px solid var(--outline-variant);
}

.blog-body pre code {
  background: transparent;
  padding: 0;
  color: var(--on-surface);
}

.blog-body img {
  max-width: 100%;
  max-height: 32vh;
  height: auto;
  object-fit: contain;
  border-radius: var(--radius-md);
  margin: 2rem 0;
}

.blog-body hr {
  border: none;
  border-top: 1px solid var(--outline-variant);
  margin: 3rem 0;
}

/* Responsive */
@media (max-width: 768px) {
  .hero h1 {
    font-size: 2.25rem;
  }

  .hero-subtitle {
    font-size: 1.25rem;
  }

  .section-title {
    font-size: 1.5rem;
  }

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

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

  .footer-inner {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 480px) {
  .hero {
    padding: 3rem 0 2.5rem;
  }

  .hero h1 {
    font-size: 1.75rem;
  }

  .container {
    padding: 0 var(--margin-mobile);
  }

  .footer-inner {
    grid-template-columns: 1fr;
  }
}

/* Utility: focus visible */
:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}