/* ==========================================================================
   Shared Components — matthewheyman.com v2
   ========================================================================== */

/* Reusable component patterns in CSS only. No new HTML elements required
   beyond semantic structure; styling via classes. Lightweight-inspired:
   clean, premium, confident. */

/* ==========================================================================
   1. Buttons
   ========================================================================== */

.btn {
  display: inline-block;
  padding: var(--space-3) var(--space-6);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  line-height: var(--line-height-tight);
  text-align: center;
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background-color var(--transition-base), border-color var(--transition-base), color var(--transition-base), box-shadow var(--transition-base), transform var(--transition-fast);
}

.btn:hover {
  transform: translateY(-1px);
}

.btn:focus-visible {
  outline: 2px solid var(--color-accent-primary);
  outline-offset: 2px;
}

/* Primary button */
.btn--primary {
  background: var(--color-accent-primary);
  color: var(--color-bg-primary);
  border-color: var(--color-accent-primary);
}

.btn--primary:hover {
  background: var(--color-accent-hover);
  border-color: var(--color-accent-hover);
  box-shadow: 0 0 24px rgba(168, 199, 255, 0.25);
  text-decoration: none;
}

/* Secondary button */
.btn--secondary {
  background: transparent;
  color: var(--color-text-primary);
  border-color: var(--color-border-medium);
}

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

/* Ghost button */
.btn--ghost {
  background: transparent;
  color: var(--color-accent-primary);
  border-color: transparent;
}

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

/* Small button */
.btn--sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--font-size-sm);
}

/* Large button */
.btn--lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--font-size-md);
}

/* ==========================================================================
   2. Cards and Panels
   ========================================================================== */

/* Card first heading: no large top margin when card is the container */
.card > h2:first-child,
.card > h3:first-child {
  margin-top: 0;
}

/* Base card (already in design-system.css; extended here) */
.card--featured {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-accent-primary);
  box-shadow: var(--glow-subtle);
}

.card--featured:hover {
  box-shadow: var(--glow-medium);
}

/* Panel (full-width section with background) */
.panel {
  padding: var(--space-12) var(--space-6);
  background: var(--color-bg-secondary);
  border-top: 1px solid var(--color-border-subtle);
  border-bottom: 1px solid var(--color-border-subtle);
}

.panel--elevated {
  background: var(--color-bg-elevated);
}

.panel--accent {
  background: linear-gradient(135deg, var(--color-bg-secondary) 0%, var(--color-bg-elevated) 100%);
  border-color: var(--color-border-medium);
}

/* ==========================================================================
   3. Hero Section
   ========================================================================== */

.hero {
  padding: var(--space-20) var(--space-6);
  text-align: center;
}

.hero__title {
  font-size: var(--font-size-5xl);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  letter-spacing: var(--letter-spacing-tight);
  margin-bottom: var(--space-4);
  background: linear-gradient(135deg, var(--color-text-primary) 0%, var(--color-text-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__subtitle {
  font-size: var(--font-size-xl);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-8);
  max-width: var(--max-width-md);
  margin-left: auto;
  margin-right: auto;
}

.hero__actions {
  display: flex;
  gap: var(--space-4);
  justify-content: center;
  flex-wrap: wrap;
}

@media (max-width: 768px) {
  .hero {
    padding: var(--space-12) var(--space-4);
  }
  
  .hero__title {
    font-size: var(--font-size-3xl);
  }
  
  .hero__subtitle {
    font-size: var(--font-size-md);
  }
}

@media (max-width: 480px) {
  .hero {
    padding: var(--space-10) var(--space-3);
  }
  
  .panel {
    padding-left: var(--space-3);
    padding-right: var(--space-3);
  }
}

/* ==========================================================================
   4. Feature Grid (3 pillars, etc.)
   ========================================================================== */

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-8);
  margin-top: var(--space-8);
}

.feature-card {
  padding: var(--space-6);
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-lg);
  transition: border-color var(--transition-base), box-shadow var(--transition-base), transform var(--transition-base);
}

.feature-card:hover {
  border-color: var(--color-accent-primary);
  box-shadow: var(--shadow-lg), 0 0 24px rgba(168, 199, 255, 0.12);
  transform: translateY(-4px);
}

.feature-card__icon {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--space-4);
  display: block;
}

.feature-card__title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-3);
  color: var(--color-text-primary);
}

.feature-card__description {
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

/* ==========================================================================
   5. Content Sections
   ========================================================================== */

/* Section header */
.section-header {
  margin-bottom: var(--space-8);
}

.section-header__title {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  margin-bottom: var(--space-3);
}

.section-header__subtitle {
  font-size: var(--font-size-md);
  color: var(--color-text-secondary);
  max-width: var(--max-width-md);
}

/* Two-column layout */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
  align-items: start;
}

@media (max-width: 768px) {
  .two-col {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }
}

/* ==========================================================================
   6. Lists
   ========================================================================== */

/* Clean list (no bullets, spaced) */
.list-clean {
  list-style: none;
  padding: 0;
  margin: 0;
}

.list-clean li {
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--color-border-subtle);
}

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

/* Link list (for navigation, resources, etc.) */
.link-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.link-list a {
  display: block;
  padding: var(--space-3) var(--space-4);
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-md);
  color: var(--color-text-primary);
  text-decoration: none;
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

.link-list a:hover {
  background: var(--color-bg-elevated);
  border-color: var(--color-accent-primary);
}

/* ==========================================================================
   7. Badges and Tags
   ========================================================================== */

.badge {
  display: inline-block;
  padding: var(--space-1) var(--space-3);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  letter-spacing: var(--letter-spacing-wide);
  text-transform: uppercase;
  border-radius: var(--radius-sm);
  background: var(--color-bg-elevated);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border-subtle);
}

.badge--accent {
  background: var(--color-accent-glow);
  color: var(--color-accent-primary);
  border-color: var(--color-accent-primary);
}

/* ==========================================================================
   8. Expandable Panel (Accordion-style)
   ========================================================================== */

/* Details/summary for native expand/collapse (no JS required) */
details.expandable {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  margin-bottom: var(--space-4);
}

details.expandable summary {
  cursor: pointer;
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  padding: var(--space-2);
  border-radius: var(--radius-md);
  transition: background-color var(--transition-fast);
  list-style: none; /* Remove default marker */
}

details.expandable summary::-webkit-details-marker {
  display: none;
}

details.expandable summary::before {
  content: "▸ ";
  display: inline-block;
  transition: transform var(--transition-fast);
}

details.expandable[open] summary::before {
  transform: rotate(90deg);
}

details.expandable summary:hover {
  background: var(--color-bg-elevated);
}

details.expandable .expandable__content {
  padding-top: var(--space-4);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

/* ==========================================================================
   9. Call-to-Action (CTA) Block
   ========================================================================== */

.cta {
  padding: var(--space-12);
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border-medium);
  border-radius: var(--radius-xl);
  text-align: center;
  box-shadow: var(--glow-subtle);
}

.cta__title {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-4);
}

.cta__description {
  font-size: var(--font-size-md);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-6);
  max-width: var(--max-width-sm);
  margin-left: auto;
  margin-right: auto;
}

.cta__actions {
  display: flex;
  gap: var(--space-4);
  justify-content: center;
  flex-wrap: wrap;
}

/* ==========================================================================
   10. Download/Action Card (for frameworks, packs)
   ========================================================================== */

.action-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-4);
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-lg);
  transition: border-color var(--transition-base), box-shadow var(--transition-base), transform var(--transition-base);
}

.action-card:hover {
  border-color: var(--color-accent-primary);
  box-shadow: var(--shadow-md), 0 0 20px rgba(168, 199, 255, 0.1);
  transform: translateY(-2px);
}

.action-card__content {
  flex: 1;
}

.action-card__title {
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-1);
}

.action-card__meta {
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
}

.action-card__action {
  flex-shrink: 0;
}

@media (max-width: 768px) {
  .action-card {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .action-card__action {
    width: 100%;
  }
  
  .action-card__action .btn {
    width: 100%;
  }
}

/* ==========================================================================
   Prose (article body from markdown)
   ========================================================================== */

.prose {
  max-width: 65ch;
}

.prose p {
  margin-bottom: var(--space-4);
}

.prose p:last-child {
  margin-bottom: 0;
}

.prose h2 {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  margin-top: var(--space-8);
  margin-bottom: var(--space-3);
}

.prose h3 {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  margin-top: var(--space-6);
  margin-bottom: var(--space-2);
}

.prose ul, .prose ol {
  margin-bottom: var(--space-4);
  padding-left: var(--space-6);
}

.prose li {
  margin-bottom: var(--space-1);
}

.prose a {
  color: var(--color-accent-primary);
  text-decoration: underline;
}

.prose a:hover {
  text-decoration: none;
}