/**
 * Category Grid Styles
 * Responsive grid of business category cards with hover effects
 * Part of v1.0.5 redesign
 */

/* ============================================
   Section Container
   ============================================ */

#v105-categories {
  padding: var(--space-3xl) var(--space-lg);
  background: linear-gradient(180deg, var(--color-off-white) 0%, var(--color-light-gray) 100%);
  position: relative;
  overflow: hidden;
}

/* Subtle background pattern */
#v105-categories::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image:
    radial-gradient(circle at 20% 50%, rgba(181, 103, 78, 0.03) 0%, transparent 50%),
    radial-gradient(circle at 80% 50%, rgba(61, 85, 84, 0.03) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}

.v105-category-grid {
  max-width: var(--container-max-width);
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

/* ============================================
   Header
   ============================================ */

.v105-category-grid__header {
  text-align: center;
  margin-bottom: var(--space-2xl);
}

.v105-section-title {
  font-family: var(--font-family-heading);
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-medium);
  color: var(--color-charcoal);
  margin: 0 0 var(--space-sm) 0;
  line-height: var(--line-height-tight);
}

.v105-section-subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  margin: 0;
  line-height: var(--line-height-relaxed);
}

/* ============================================
   Cards Grid
   ============================================ */

.v105-category-grid__cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr); /* 3 columns on desktop */
  gap: var(--space-lg);
  margin-top: var(--space-2xl);
}

/* ============================================
   Category Card
   ============================================ */

.v105-category-card {
  position: relative;
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  overflow: hidden;
  transition: var(--transition-base);
  transition-property: transform, box-shadow;

  /* Prepare for animation */
  opacity: 0;
  transform: translateY(30px);
}

/* Animated state - triggered by JavaScript with stagger delay */
.v105-category-card--animated {
  opacity: 1;
  transform: translateY(0);
  animation: card-enter 0.6s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
  animation-delay: var(--stagger-delay, 0ms);
}

/* ============================================
   Card Background Gradient
   ============================================ */

.v105-category-card__background {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 100px;
  opacity: 0.1;
  transition: opacity var(--transition-base), transform var(--transition-base);
  pointer-events: none;
  z-index: 0;
}

/* Unique gradient for each category (CSP-compliant - no inline styles) */
.v105-gradient-market-opportunities {
  background: linear-gradient(135deg, var(--color-rust) 0%, var(--color-rust-light) 100%);
}

.v105-gradient-comps {
  background: linear-gradient(135deg, var(--color-teal) 0%, var(--color-teal-light) 100%);
}

.v105-gradient-investor-relations-rfp {
  background: linear-gradient(135deg, var(--color-rust) 0%, var(--color-teal) 100%);
}

.v105-gradient-underwriting {
  background: linear-gradient(135deg, var(--color-teal) 0%, var(--color-rust) 100%);
}

.v105-gradient-idr {
  background: linear-gradient(135deg, var(--color-charcoal) 0%, var(--color-teal) 100%);
}

.v105-gradient-portfolio-analytics {
  background: linear-gradient(135deg, var(--color-rust) 0%, var(--color-charcoal) 100%);
}

.v105-category-card:hover .v105-category-card__background {
  opacity: 0.15;
  transform: scale(1.1);
}

/* ============================================
   Card Icon
   ============================================ */

.v105-category-card__icon {
  position: relative;
  z-index: 1;
  width: 48px;
  height: 48px;
  margin-bottom: var(--space-md);
  transition: transform var(--transition-base);
  display: flex;
  align-items: center;
  justify-content: flex-start;
  color: var(--color-rust);
}

.v105-category-card__icon svg {
  width: 48px;
  height: 48px;
}

.v105-category-card:hover .v105-category-card__icon {
  transform: scale(1.1) rotate(5deg);
}

/* ============================================
   Card Content
   ============================================ */

.v105-category-card__content {
  position: relative;
  z-index: 1;
  margin-bottom: var(--space-lg);
}

.v105-category-card__title {
  font-family: var(--font-family-heading);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-medium);
  color: var(--color-charcoal);
  margin: 0 0 var(--space-sm) 0;
  line-height: var(--line-height-tight);
  transition: color var(--transition-base);
}

.v105-category-card:hover .v105-category-card__title {
  color: var(--color-rust);
}

.v105-category-card__description {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin: 0;
  line-height: var(--line-height-relaxed);
}

/* ============================================
   App Count Badge
   ============================================ */

.v105-category-card__badge {
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  background: linear-gradient(135deg, var(--color-rust) 0%, var(--color-rust-dark) 100%);
  color: var(--color-white);
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-full);
  font-weight: var(--font-weight-medium);
  box-shadow: 0 2px 8px rgba(181, 103, 78, 0.2);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.v105-category-card:hover .v105-category-card__badge {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(181, 103, 78, 0.3);
}

.v105-category-card__badge-count {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
}

.v105-category-card__badge-label {
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ============================================
   Arrow Indicator
   ============================================ */

.v105-category-card__arrow {
  position: absolute;
  bottom: var(--space-md);
  right: var(--space-md);
  color: var(--color-rust);
  opacity: 0;
  transform: translateY(-10px);
  transition: opacity var(--transition-base), transform var(--transition-base);
  z-index: 1;
}

.v105-category-card:hover .v105-category-card__arrow {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================
   Hover Effects
   ============================================ */

.v105-category-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-rust);
}

.v105-category-card:focus {
  outline: 2px solid var(--color-rust);
  outline-offset: 4px;
}

.v105-category-card:active {
  transform: translateY(-4px);
}

/* ============================================
   Loading State (Skeleton)
   ============================================ */

.v105-category-card--loading {
  cursor: default;
  pointer-events: none;
}

.v105-category-card--loading .skeleton {
  background: linear-gradient(
    90deg,
    var(--color-light-gray) 0%,
    var(--color-off-white) 50%,
    var(--color-light-gray) 100%
  );
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s ease-in-out infinite;
  border-radius: var(--radius-sm);
}

.v105-category-card--loading .v105-category-card__icon.skeleton {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
}

.v105-category-card--loading .skeleton-text {
  height: 1em;
  margin-bottom: var(--space-xs);
}

.v105-category-card--loading .v105-category-card__title.skeleton {
  width: 70%;
  height: 1.5em;
}

.v105-category-card--loading .v105-category-card__description.skeleton {
  width: 100%;
  height: 1em;
}

.v105-category-card--loading .v105-category-card__badge.skeleton {
  width: 60px;
  height: 28px;
  background: var(--color-light-gray);
  border-radius: var(--radius-full);
}

/* ============================================
   Active Card State (expanded)
   ============================================ */

.v105-category-card--active {
  transform: translateY(-8px);
  box-shadow: var(--shadow-rust-lg);
  border: 2px solid var(--color-rust);
}

.v105-category-card--active .v105-category-card__title {
  color: var(--color-rust);
}

.v105-category-card--active .v105-category-card__arrow {
  opacity: 1;
  transform: rotate(180deg);
}

/* ============================================
   Expansion Panel (Inline App List)
   ============================================ */

.v105-expansion-panel-container {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.v105-expansion-panel-container--visible {
  max-height: 3000px;
  overflow: visible;
}

.v105-expansion-panel {
  margin-top: var(--space-lg);
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  border-top: 3px solid var(--panel-accent, var(--color-rust));
  animation: panel-enter 0.35s var(--ease-out);
}

@keyframes panel-enter {
  from {
    opacity: 0;
    transform: translateY(-12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.v105-expansion-panel__header {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-lg) var(--space-lg) 0;
}

.v105-expansion-panel__icon {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
}

.v105-expansion-panel__icon svg {
  width: 32px;
  height: 32px;
}

.v105-expansion-panel__title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-medium);
  color: var(--color-charcoal);
  margin: 0;
  flex: 1;
}

.v105-expansion-panel__count {
  font-size: var(--font-size-sm);
  color: var(--color-dark-gray);
  background: var(--color-off-white);
  padding: 4px 12px;
  border-radius: var(--radius-full);
}

.v105-expansion-panel__close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: none;
  background: var(--color-off-white);
  border-radius: var(--radius-md);
  color: var(--color-dark-gray);
  cursor: pointer;
  transition: background var(--transition-fast), color var(--transition-fast);
}

.v105-expansion-panel__close:hover {
  background: var(--color-rust);
  color: var(--color-white);
}

.v105-expansion-panel__close:focus-visible {
  outline: 2px solid var(--color-rust);
  outline-offset: 2px;
}

.v105-expansion-panel__apps {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-md);
  padding: var(--space-lg);
}

.v105-expansion-empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: var(--space-xl);
  color: var(--color-dark-gray);
  font-style: italic;
}

/* ============================================
   App Card (inside expansion panel)
   ============================================ */

.v105-app-card {
  background: var(--color-white);
  border: 1px solid var(--color-light-gray);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

.v105-app-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--card-accent, var(--color-rust));
}

.v105-app-card__accent {
  height: 3px;
  background: var(--card-accent, var(--color-rust));
  transition: height var(--transition-fast);
}

.v105-app-card:hover .v105-app-card__accent {
  height: 4px;
}

.v105-app-card__body {
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  flex: 1;
}

.v105-app-card__title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-medium);
  color: var(--color-charcoal);
  margin: 0;
  line-height: var(--line-height-tight);
}

.v105-app-card__description {
  font-size: var(--font-size-sm);
  color: var(--color-dark-gray);
  margin: 0;
  line-height: var(--line-height-relaxed);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.v105-app-card__meta {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

.v105-app-type-badge {
  display: inline-block;
  padding: 2px 10px;
  background: var(--color-light-gray);
  color: var(--color-dark-gray);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
}

.v105-app-card__updated {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: var(--font-size-xs);
  color: var(--color-dark-gray);
}

.v105-app-launch-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  margin-top: auto;
  background: linear-gradient(135deg, var(--color-rust) 0%, var(--color-rust-dark) 100%);
  color: var(--color-white);
  border: none;
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  cursor: pointer;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
  box-shadow: 0 2px 6px rgba(181, 103, 78, 0.2);
}

.v105-app-launch-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(181, 103, 78, 0.3);
  background: var(--color-rust-light);
}

.v105-app-launch-btn:active {
  transform: translateY(0);
}

.v105-app-launch-btn:focus-visible {
  outline: 3px solid var(--color-rust);
  outline-offset: 2px;
}

/* ============================================
   Error State
   ============================================ */

.v105-error-message {
  text-align: center;
  padding: var(--space-2xl);
  background: var(--color-white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
}

.v105-error-message p {
  color: var(--color-text-secondary);
  margin: var(--space-sm) 0;
}

.v105-error-message p:first-child {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-medium);
  color: var(--color-charcoal);
}

/* ============================================
   Responsive Design
   ============================================ */

/* Tablet (2 columns) */
@media (max-width: 992px) {
  .v105-category-grid__cards {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
  }

  .v105-section-title {
    font-size: var(--font-size-3xl);
  }

  .v105-category-card {
    padding: var(--space-lg);
  }

  .v105-category-card__icon {
    width: 40px;
    height: 40px;
  }

  .v105-category-card__icon svg {
    width: 40px;
    height: 40px;
  }

  .v105-expansion-panel__apps {
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  }

  .v105-expansion-panel__header {
    padding: var(--space-md) var(--space-md) 0;
  }

  .v105-expansion-panel__apps {
    padding: var(--space-md);
  }
}

/* Mobile (1 column) */
@media (max-width: 576px) {
  #v105-categories {
    padding: var(--space-2xl) var(--space-md);
  }

  .v105-category-grid__cards {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }

  .v105-category-grid__header {
    margin-bottom: var(--space-xl);
  }

  .v105-section-title {
    font-size: var(--font-size-2xl);
  }

  .v105-section-subtitle {
    font-size: var(--font-size-base);
  }

  .v105-category-card {
    padding: var(--space-md);
  }

  .v105-category-card__icon {
    width: 32px;
    height: 32px;
    margin-bottom: var(--space-sm);
  }

  .v105-category-card__icon svg {
    width: 32px;
    height: 32px;
  }

  .v105-category-card__title {
    font-size: var(--font-size-lg);
  }

  .v105-category-card__description {
    font-size: var(--font-size-xs);
  }

  .v105-category-card:hover {
    /* Reduce hover lift on mobile for touch UX */
    transform: translateY(-4px);
  }

  .v105-expansion-panel__header {
    padding: var(--space-md) var(--space-md) 0;
    gap: var(--space-sm);
  }

  .v105-expansion-panel__title {
    font-size: var(--font-size-lg);
  }

  .v105-expansion-panel__apps {
    grid-template-columns: 1fr;
    padding: var(--space-md);
    gap: var(--space-sm);
  }

  .v105-app-card__body {
    padding: var(--space-md);
  }

  .v105-app-card__title {
    font-size: var(--font-size-base);
  }
}

/* ============================================
   Accessibility
   ============================================ */

/* Keyboard navigation */
.v105-category-card:focus-visible {
  outline: 3px solid var(--color-rust);
  outline-offset: 4px;
  background: var(--color-off-white);
  box-shadow: var(--shadow-rust);
  transform: translateY(-4px);
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
  .v105-category-card,
  .v105-category-card__background,
  .v105-category-card__icon,
  .v105-category-card__title,
  .v105-category-card__badge,
  .v105-category-card__arrow {
    transition: none;
    animation: none;
  }

  .v105-category-card--animated {
    opacity: 1;
    transform: translateY(0);
    animation: none;
  }

  .v105-category-card:hover {
    transform: none;
  }

  .v105-expansion-panel {
    animation: none;
  }

  .v105-expansion-panel-container {
    transition: none;
  }

  .v105-app-card,
  .v105-app-card__accent,
  .v105-app-launch-btn,
  .v105-expansion-panel__close {
    transition: none;
  }

  .v105-app-card:hover {
    transform: none;
  }

  .v105-section-highlight {
    animation: none;
    background-color: rgba(181, 103, 78, 0.05);
  }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  .v105-category-card {
    border: 2px solid var(--color-charcoal);
  }

  .v105-category-card:hover {
    border-color: var(--color-rust);
  }

  .v105-category-card__background {
    opacity: 0.2;
  }

  .v105-app-card {
    border: 2px solid var(--color-charcoal);
  }

  .v105-expansion-panel {
    border: 2px solid var(--color-charcoal);
  }
}

/* ============================================
   Print Styles
   ============================================ */

@media print {
  #v105-categories {
    padding: 0;
    background: white;
  }

  #v105-categories::before {
    display: none;
  }

  .v105-category-grid__cards {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
  }

  .v105-category-card {
    box-shadow: none;
    border: 1px solid var(--color-light-gray);
    page-break-inside: avoid;
  }

  .v105-category-card__background {
    opacity: 0.05;
  }

  .v105-category-card__arrow {
    display: none;
  }

  .v105-section-title {
    color: black;
  }

  .v105-expansion-panel {
    box-shadow: none;
    border: 1px solid var(--color-light-gray);
    page-break-inside: avoid;
  }

  .v105-app-card {
    box-shadow: none;
    page-break-inside: avoid;
  }

  .v105-app-launch-btn {
    display: none;
  }
}

/* ============================================
   Dark Mode Support (Future Enhancement)
   ============================================ */

@media (prefers-color-scheme: dark) {
  /* Note: Currently v1.0.5 doesn't support dark mode */
  /* This is placeholder for future enhancement */
  /*
  #v105-categories {
    background: linear-gradient(180deg, #1a1a1a 0%, #2a2a2a 100%);
  }

  .v105-category-card {
    background: #2b3331;
  }

  .v105-section-title {
    color: var(--color-off-white);
  }
  */
}