/* Microsoft Fabric Design Language Styles */
:root {
  /* Color tokens inspired by Microsoft Fabric */
  --fabric-primary: #19433c;
  --fabric-primary-hover: #286c61;
  --fabric-secondary: #323130;
  --fabric-neutral-grey-10: #faf9f8;
  --fabric-neutral-grey-20: #f3f2f1;
  --fabric-neutral-grey-30: #edebe9;
  --fabric-neutral-grey-90: #323130;
  --fabric-neutral-grey-160: #323130;
  --fabric-semantic-success: #107c10;
  --fabric-semantic-warning: #ffb900;
  --fabric-semantic-error: #d13438;
  --fabric-background-fade-dark: #fff6dc;
  --fabric-background-fade-light: #edf9f7;
  
  /* Typography */
  --font-family-primary: "Segoe UI", -apple-system, BlinkMacSystemFont, Roboto, "Helvetica Neue", sans-serif;
  --font-size-hero: 2.5rem;
  --font-size-title: 1.75rem;
  --font-size-subtitle: 1.25rem;
  --font-size-body: 0.875rem;
  --font-size-caption: 0.75rem;
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-s: 0.5rem;
  --spacing-m: 1rem;
  --spacing-l: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-xxl: 3rem;
  
  /* Elevation/shadows */
  --elevation-2: 0 0.125rem 0.375rem rgba(0, 0, 0, 0.12);
  --elevation-4: 0 0.25rem 0.5rem rgba(0, 0, 0, 0.14);
  --elevation-8: 0 0.5rem 1rem rgba(0, 0, 0, 0.18);
}

* {
  box-sizing: border-box;
}

body {
  font-family: var(--font-family-primary);
  font-size: var(--font-size-body);
  line-height: 1.5;
  color: var(--fabric-neutral-grey-160);
  background: linear-gradient(70deg, var(--fabric-background-fade-dark) 0%, var(--fabric-background-fade-light) 100%);
  margin: 0;
  padding: 0;
}

/* Layout */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-l);
}

.header {
  background-color: white;
  border-bottom: 1px solid var(--fabric-neutral-grey-30);
  padding: var(--spacing-l) 0;
  margin-bottom: var(--spacing-xl);
}

.hero-section {
  text-align: center;
  padding: var(--spacing-xxl) 0;
  background: linear-gradient(135deg, var(--fabric-primary) 0%, #348c7e 100%);
  color: white;
  margin-bottom: var(--spacing-xl);
}

.hero-title {
  font-size: var(--font-size-hero);
  font-weight: 600;
  margin: 0 0 var(--spacing-m) 0;
  letter-spacing: -0.02em;
}

.hero-subtitle {
  font-size: var(--font-size-subtitle);
  font-weight: 400;
  margin: 0 0 var(--spacing-xl) 0;
  opacity: 0.9;
}

/* Cards */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-l);
  margin-bottom: var(--spacing-xl);
}

.card {
  background: white;
  border-radius: 8px;
  padding: var(--spacing-l);
  box-shadow: var(--elevation-2);
  transition: box-shadow 0.2s ease, transform 0.2s ease;
  border: 1px solid var(--fabric-neutral-grey-30);
}

.card:hover {
  box-shadow: var(--elevation-8);
  transform: translateY(-2px);
}

.card-title {
  font-size: var(--font-size-title);
  font-weight: 600;
  margin: 0 0 var(--spacing-m) 0;
  color: var(--fabric-neutral-grey-160);
}

.card-description {
  color: var(--fabric-neutral-grey-90);
  margin-bottom: var(--spacing-l);
  line-height: 1.6;
}

/* Buttons */
.button {
  display: inline-flex;
  align-items: center;
  padding: var(--spacing-s) var(--spacing-l);
  border: none;
  border-radius: 4px;
  font-family: var(--font-family-primary);
  font-size: var(--font-size-body);
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.button-primary {
  background-color: var(--fabric-primary);
  color: white;
}

.button-primary:hover {
  background-color: var(--fabric-primary-hover);
  color: white;
}

.button-secondary {
  background-color: transparent;
  color: var(--fabric-primary);
  border: 1px solid var(--fabric-primary);
}

.button-secondary:hover {
  background-color: var(--fabric-primary);
  color: white;
}

/* Features list */
.features-section {
  background: white;
  border-radius: 8px;
  padding: var(--spacing-xl);
  box-shadow: var(--elevation-2);
  margin-bottom: var(--spacing-xl);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-l);
}

.feature-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-m);
}

.feature-icon {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  margin-top: 2px;
}

.feature-content h3 {
  font-size: var(--font-size-subtitle);
  font-weight: 600;
  margin: 0 0 var(--spacing-s) 0;
  color: var(--fabric-neutral-grey-160);
}

.feature-content p {
  margin: 0;
  color: var(--fabric-neutral-grey-90);
  line-height: 1.5;
}

/* Status indicators */
.status-live {
  background-color: var(--fabric-semantic-success);
  color: white;
  padding: var(--spacing-xs) var(--spacing-s);
  border-radius: 12px;
  font-size: var(--font-size-caption);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Footer */
.footer {
  text-align: center;
  padding: var(--spacing-xl) 0;
  color: var(--fabric-neutral-grey-90);
  border-top: 1px solid var(--fabric-neutral-grey-30);
  margin-top: var(--spacing-xxl);
}

/* Responsive design */
@media (max-width: 768px) {
  .container {
    padding: 0 var(--spacing-m);
  }
  
  .hero-title {
    font-size: 2rem;
  }
  
  .hero-subtitle {
    font-size: 1.125rem;
  }
  
  .card-grid {
    grid-template-columns: 1fr;
  }
  
  .features-grid {
    grid-template-columns: 1fr;
  }
}

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

/* Why Build and Coming Soon Sections */
.why-build-section {
  border-radius: 12px;
  padding: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
  box-shadow: var(--elevation-2);
}

.section-title {
  text-align: center;
  font-size: 2rem;
  font-weight: 600;
  color: var(--fabric-neutral-grey-160);
  margin-bottom: var(--spacing-xl);
  position: relative;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -12px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--fabric-primary), var(--fabric-primary-dark));
  border-radius: 2px;
}

.why-build-content {
  display: grid;
  gap: var(--spacing-xl);
}

.why-build-story {
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.story-text {
  font-size: 1.125rem;
  line-height: 1.6;
  color: var(--fabric-neutral-grey-130);
  margin-bottom: var(--spacing-m);
}

.benefits-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-l);
  margin-top: var(--spacing-xl);
}

.benefit-item {
  text-align: center;
  padding: var(--spacing-l);
  background: var(--fabric-neutral-grey-10);
  border-radius: 8px;
  border: 1px solid var(--fabric-neutral-grey-20);
  transition: all 0.2s ease;
}

.benefit-item:hover {
  transform: translateY(-2px);
  box-shadow: var(--elevation-2);
  border-color: var(--fabric-primary);
}

.benefit-icon {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-m);
}

.benefit-item h4 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--fabric-neutral-grey-160);
  margin-bottom: var(--spacing-s);
}

.benefit-item p {
  color: var(--fabric-neutral-grey-90);
  line-height: 1.5;
}

.coming-soon-section {
  background: linear-gradient(135deg, var(--fabric-primary) 0%, var(--fabric-primary-dark) 100%);
  border-radius: 12px;
  padding: var(--spacing-xl);
  color: var(--fabric-secondary);
}

.coming-soon-title {
  text-align: center;
  font-size: 1.75rem;
  font-weight: 600;
  color: var(--fabric-secondary);
  margin-bottom: var(--spacing-xl);
  position: relative;
}

.coming-soon-title::after {
  content: '';
  position: absolute;
  bottom: -12px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: rgba(255, 255, 255, 0.8);
  border-radius: 2px;
}

.roadmap-items {
  display: grid;
  gap: var(--spacing-l);
}

.roadmap-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-m);
  padding: var(--spacing-l);
  background: rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  transition: all 0.2s ease;
}

.roadmap-item:hover {
  background: rgba(255, 255, 255, 0.15);
  transform: translateX(8px);
}

.roadmap-icon {
  font-size: 2rem;
  flex-shrink: 0;
  margin-top: 4px;
}

.roadmap-content {
  flex: 1;
}

.roadmap-content h4 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--fabric-secondary);
  margin-bottom: var(--spacing-s);
}

.roadmap-content p {
  color: var(--fabric-secondary);
  line-height: 1.5;
  margin-bottom: var(--spacing-s);
}

.roadmap-status {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-s);
  background: rgba(255, 255, 255, 0.2);
  border-radius: 12px;
  font-size: var(--font-size-caption);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Responsive adjustments for new sections */
@media (max-width: 768px) {
  .why-build-section,
  .coming-soon-section {
    padding: var(--spacing-l);
  }
  
  .section-title,
  .coming-soon-title {
    font-size: 1.5rem;
  }
  
  .benefits-grid {
    grid-template-columns: 1fr;
  }
  
  .roadmap-item {
    flex-direction: column;
    text-align: center;
  }
  
  .roadmap-item:hover {
    transform: translateY(-4px);
  }
  
  .filters-container {
    grid-template-columns: 1fr;
    gap: var(--spacing-m);
  }
  
  .filter-group {
    min-width: auto;
  }
}

/* Recent Changes Section */
.recent-changes-section {
  background: white;
  border-radius: 12px;
  padding: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
  box-shadow: var(--elevation-2);
}

.recent-changes-content {
  margin-top: var(--spacing-l);
}

.filters-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-m);
  padding: var(--spacing-l);
  background: var(--fabric-neutral-grey-10);
  border-radius: 8px;
  margin-bottom: var(--spacing-l);
  align-items: end;
}

.filter-group {
  display: flex;
  flex-direction: column;
  min-width: 160px;
}

.filter-group label {
  font-weight: 600;
  color: var(--fabric-neutral-grey-130);
  margin-bottom: var(--spacing-xs);
  font-size: var(--font-size-caption);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.filter-select {
  padding: var(--spacing-s);
  border: 1px solid var(--fabric-neutral-grey-30);
  border-radius: 4px;
  font-size: var(--font-size-body);
  background: white;
  transition: all 0.2s ease;
}

.filter-select:focus {
  outline: none;
  border-color: var(--fabric-primary);
  box-shadow: 0 0 0 2px rgba(0, 120, 212, 0.1);
}

.filter-select:hover {
  border-color: var(--fabric-neutral-grey-60);
}

.loading-indicator {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-m);
  padding: var(--spacing-xl);
  color: var(--fabric-neutral-grey-90);
}

.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--fabric-neutral-grey-30);
  border-top: 2px solid var(--fabric-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.changes-grid {
  display: grid;
  gap: var(--spacing-m);
}

.change-item {
  background: white;
  border: 1px solid var(--fabric-neutral-grey-20);
  border-radius: 8px;
  padding: var(--spacing-m);
  transition: all 0.2s ease;
  position: relative;
}

.change-item:hover {
  border-color: var(--fabric-primary);
  box-shadow: var(--elevation-1);
}

.change-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--spacing-s);
  flex-wrap: wrap;
  gap: var(--spacing-s);
}

.change-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--fabric-neutral-grey-160);
  margin: 0;
  flex: 1;
  min-width: 200px;
}

.change-badges {
  display: flex;
  gap: var(--spacing-xs);
  flex-wrap: wrap;
}

.change-badge {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-s);
  border-radius: 12px;
  border-width: 1px;
  border-style: solid;
  font-size: var(--font-size-caption);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.badge-product {
  border-color: var(--fabric-primary);
  color: var(--fabric-neutral-grey-160);
}

.badge-warning {
  border-color: var(--fabric-semantic-warning);
  color: var(--fabric-neutral-grey-160);
}

.badge-success {
  border-color: var(--fabric-semantic-success);
  color: var(--fabric-neutral-grey-160);
}

.change-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-s);
  font-size: var(--font-size-caption);
  color: var(--fabric-neutral-grey-90);
}

.change-date {
  font-weight: 600;
}

.change-description {
  color: var(--fabric-neutral-grey-90);
  line-height: 1.5;
  margin: 0;
}

.no-results {
  text-align: center;
  padding: var(--spacing-xxl);
  color: var(--fabric-neutral-grey-90);
}

.no-results p {
  font-size: 1.1rem;
  margin: 0;
}

/* Focus indicators */
.button:focus-visible,
a:focus-visible {
  outline: 2px solid var(--fabric-primary);
  outline-offset: 2px;
}

/* Loading states */
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.loading {
  animation: pulse 1.5s ease-in-out infinite;
}