/* Collapse/Spoiler Component Styles */
/* Theme-aware collapsible sections for FAQ, extra options, and more */

/* Container */
.collapse-container {
  --collapse-accent: var(--primary-blue);
  --collapse-accent-rgb: 99, 102, 241;
  --collapse-border: var(--border-color);
  position: relative !important;
  margin-bottom: 14px;
  border: 1px solid var(--collapse-border);
  border-radius: 12px;
  background:
    linear-gradient(
      180deg,
      rgba(255, 255, 255, 0.04) 0%,
      rgba(255, 255, 255, 0) 100%
    ),
    var(--card-bg);
  display: block !important;
  padding: 0 !important;
  overflow: hidden !important;
  isolation: isolate;
  transition:
    border-color 0.25s ease,
    box-shadow 0.25s ease,
    transform 0.25s ease,
    background-color 0.25s ease;
}

.collapse-container::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(
    135deg,
    rgba(var(--collapse-accent-rgb), 0.18) 0%,
    rgba(var(--collapse-accent-rgb), 0.05) 34%,
    rgba(var(--collapse-accent-rgb), 0) 65%
  );
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
  z-index: 0;
}

.collapse-container::after {
  content: '';
  position: absolute;
  inset: 1px;
  border-radius: 11px;
  border: 1px solid rgba(255, 255, 255, 0.03);
  pointer-events: none;
  opacity: 0.8;
  z-index: 0;
}

.collapse-container:last-child {
  margin-bottom: 0;
}

.collapse-container:hover {
  border-color: rgba(var(--collapse-accent-rgb), 0.32);
  transform: translateY(-2px);
}

.collapse-container:hover::before {
  opacity: 1;
}

.collapse-container.open {
  border-color: rgba(var(--collapse-accent-rgb), 0.28);
}

.collapse-container.open::before {
  opacity: 1;
}

/* Header/Trigger */
.collapse-header {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  width: 100%;
  min-height: 54px;
  padding: 14px 16px;
  margin: 0 !important;
  background: linear-gradient(
    180deg,
    rgba(255, 255, 255, 0.02) 0%,
    rgba(255, 255, 255, 0) 100%
  ) !important;
  border: none !important;
  border-radius: 0 !important;
  border-bottom: 1px solid transparent;
  color: var(--text-color) !important;
  font-family: inherit;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.35;
  text-align: left;
  cursor: pointer;
  user-select: none;
  transform: none !important;
  box-shadow: none !important;
  transition:
    background-color 0.2s ease,
    border-color 0.2s ease,
    box-shadow 0.2s ease,
    color 0.2s ease;
}

.collapse-header:hover {
  background:
    linear-gradient(
      180deg,
      rgba(var(--collapse-accent-rgb), 0.06) 0%,
      rgba(var(--collapse-accent-rgb), 0.03) 100%
    ),
    rgba(255, 255, 255, 0.01) !important;
  border-color: transparent !important;
  border-bottom-color: transparent !important;
  color: var(--text-color) !important;
  transform: none !important;
  box-shadow: none !important;
}

.collapse-header:focus {
  outline: none;
}

.collapse-header:focus-visible {
  outline: none;
  box-shadow:
    inset 0 0 0 1px rgba(var(--collapse-accent-rgb), 0.32),
    0 0 0 3px rgba(var(--collapse-accent-rgb), 0.12) !important;
}

.collapse-container.open .collapse-header {
  border-color: transparent !important;
  border-bottom-color: rgba(var(--collapse-accent-rgb), 0.14) !important;
  background:
    linear-gradient(
      180deg,
      rgba(var(--collapse-accent-rgb), 0.06) 0%,
      rgba(var(--collapse-accent-rgb), 0.02) 100%
    ),
    rgba(255, 255, 255, 0.01) !important;
  color: var(--text-color) !important;
}

/* Header content */
.collapse-header-content {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 1;
  min-width: 0;
}

.collapse-header-icon {
  width: 28px;
  height: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  border: 1px solid rgba(var(--collapse-accent-rgb), 0.16);
  border-radius: 8px;
  background: rgba(var(--collapse-accent-rgb), 0.08);
  color: var(--collapse-accent) !important;
  font-size: 14px !important;
  transition:
    background-color 0.2s ease,
    border-color 0.2s ease,
    color 0.2s ease,
    transform 0.2s ease;
}

.collapse-container:hover .collapse-header-icon,
.collapse-container.open .collapse-header-icon {
  border-color: rgba(var(--collapse-accent-rgb), 0.24);
  background: rgba(var(--collapse-accent-rgb), 0.12);
}

.collapse-header-title {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.collapse-header-badge {
  margin-left: 6px;
  flex-shrink: 0;
}

/* Chevron icon */
.collapse-chevron {
  width: 24px;
  height: 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  border-radius: 999px;
  border: 1px solid rgba(var(--collapse-accent-rgb), 0.12);
  background: rgba(var(--collapse-accent-rgb), 0.06);
  color: var(--muted-text) !important;
  font-size: 12px !important;
  line-height: 1;
  transition:
    transform 0.28s ease,
    background-color 0.2s ease,
    border-color 0.2s ease,
    color 0.2s ease,
    box-shadow 0.2s ease;
}

.collapse-container:hover .collapse-chevron {
  color: var(--collapse-accent) !important;
  border-color: rgba(var(--collapse-accent-rgb), 0.2);
  background: rgba(var(--collapse-accent-rgb), 0.09);
}

.collapse-container.open .collapse-chevron {
  transform: rotate(180deg);
  color: var(--collapse-accent) !important;
  border-color: rgba(var(--collapse-accent-rgb), 0.22);
  background: rgba(var(--collapse-accent-rgb), 0.12);
  box-shadow: 0 4px 10px rgba(var(--collapse-accent-rgb), 0.16);
}

/* Content */
.collapse-content {
  position: relative;
  z-index: 1;
  max-height: 0;
  width: 100%;
  overflow: hidden !important;
  transition:
    max-height 0.3s ease,
    opacity 0.2s ease;
}

.collapse-content-inner {
  position: relative;
  padding: 14px 16px 16px 16px;
  color: var(--text-color);
  opacity: 0;
  transform: translateY(-6px);
  transition:
    opacity 0.2s ease,
    transform 0.24s ease;
}

.collapse-content-inner::before {
  content: '';
  position: absolute;
  top: 0;
  left: 16px;
  right: 16px;
  height: 1px;
  background: linear-gradient(
    90deg,
    rgba(var(--collapse-accent-rgb), 0.18) 0%,
    rgba(var(--collapse-accent-rgb), 0.08) 45%,
    rgba(var(--collapse-accent-rgb), 0) 100%
  );
  opacity: 0;
  transition: opacity 0.2s ease;
}

/* Open state */
.collapse-container.open .collapse-content {
  max-height: var(--collapse-max-height, 2400px);
}

.collapse-container.open .collapse-content-inner {
  opacity: 1;
  transform: translateY(0);
}

.collapse-container.open .collapse-content-inner::before {
  opacity: 1;
}

/* Variants */
.collapse-container.variant-primary {
  --collapse-accent: var(--primary-blue);
  --collapse-accent-rgb: 99, 102, 241;
}

.collapse-container.variant-primary .collapse-header {
  background:
    linear-gradient(
      180deg,
      rgba(99, 102, 241, 0.06) 0%,
      rgba(99, 102, 241, 0.02) 100%
    ),
    rgba(255, 255, 255, 0.01);
}

.collapse-container.variant-success {
  --collapse-accent: #10b981;
  --collapse-accent-rgb: 16, 185, 129;
}

.collapse-container.variant-warning {
  --collapse-accent: #f59e0b;
  --collapse-accent-rgb: 245, 158, 11;
}

.collapse-container.variant-danger {
  --collapse-accent: #ef4444;
  --collapse-accent-rgb: 239, 68, 68;
}

.collapse-container.variant-info {
  --collapse-accent: #3b82f6;
  --collapse-accent-rgb: 59, 130, 246;
}

/* Minimal variant (borderless) */
.collapse-container.variant-minimal {
  margin-bottom: 10px;
  border: none;
  border-bottom: 1px solid var(--border-color);
  border-radius: 0;
  background: transparent;
  box-shadow: none;
  transform: none;
}

.collapse-container.variant-minimal::before,
.collapse-container.variant-minimal::after {
  display: none;
}

.collapse-container.variant-minimal .collapse-header {
  padding-left: 0;
  padding-right: 0;
  background: transparent !important;
}

.collapse-container.variant-minimal .collapse-content-inner {
  padding-left: 0;
  padding-right: 0;
}

.collapse-container.variant-minimal .collapse-content-inner::before {
  left: 0;
  right: 0;
}

.collapse-container.variant-minimal:hover {
  border-color: rgba(var(--collapse-accent-rgb), 0.28);
}

.collapse-container.variant-minimal:hover,
.collapse-container.variant-minimal.open {
  transform: none;
}

/* Flush variant (no spacing) */
.collapse-container.variant-flush {
  margin-bottom: 0;
  border-radius: 0;
  border-left: none;
  border-right: none;
  border-top: none;
  box-shadow: none;
}

.collapse-container.variant-flush::before,
.collapse-container.variant-flush::after {
  display: none;
}

.collapse-container.variant-flush:last-child {
  border-bottom: none;
}

/* Group container */
.collapse-group {
  display: grid;
  gap: 8px;
  padding: 8px;
  border: 1px solid var(--border-color);
  border-radius: 14px;
  background:
    linear-gradient(
      180deg,
      rgba(255, 255, 255, 0.03) 0%,
      rgba(255, 255, 255, 0) 100%
    ),
    var(--card-bg);
  overflow: hidden;
}

.collapse-group .collapse-container {
  margin: 0;
}

.collapse-group .collapse-container:last-child {
  margin-bottom: 0;
}

/* FAQ specific styles */
.collapse-faq .collapse-header-title {
  font-weight: 600;
  color: var(--text-color);
  white-space: normal;
  line-height: 1.4;
}

.collapse-faq .collapse-content-inner {
  padding-top: 12px;
  color: var(--text-color);
  line-height: 1.65;
}

.collapse-faq .collapse-header-icon {
  color: var(--accent-blue);
}

/* Loading state */
.collapse-container.loading {
  opacity: 0.7;
  pointer-events: none;
}

.collapse-container.loading .collapse-chevron {
  animation: spin 1s linear infinite;
}

@keyframes spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

/* Disabled state */
.collapse-container.disabled {
  opacity: 0.55;
  pointer-events: none;
}

.collapse-container.disabled .collapse-header {
  cursor: not-allowed;
}

/* Animation states */
.collapse-container.animating .collapse-content {
  overflow: hidden !important;
  will-change: max-height;
}

/* Theme-specific adjustments */
body.theme-dark .collapse-container {
  background:
    linear-gradient(
      180deg,
      rgba(255, 255, 255, 0.03) 0%,
      rgba(255, 255, 255, 0) 100%
    ),
    rgba(35, 47, 67, 0.92);
}

body.theme-dark .collapse-group {
  background:
    linear-gradient(
      180deg,
      rgba(255, 255, 255, 0.02) 0%,
      rgba(255, 255, 255, 0) 100%
    ),
    rgba(30, 41, 59, 0.72);
  box-shadow: 0 8px 20px rgba(4, 10, 22, 0.16);
}

body.theme-light .collapse-container {
  background:
    linear-gradient(
      180deg,
      rgba(255, 255, 255, 0.9) 0%,
      rgba(255, 255, 255, 0.7) 100%
    ),
    rgba(255, 255, 255, 0.88);
  box-shadow:
    0 8px 18px rgba(15, 23, 42, 0.06),
    0 1px 0 rgba(255, 255, 255, 0.7) inset;
}

body.theme-light .collapse-container::after {
  border-color: rgba(99, 102, 241, 0.04);
}

body.theme-light .collapse-group {
  background:
    linear-gradient(
      180deg,
      rgba(255, 255, 255, 0.95) 0%,
      rgba(241, 245, 249, 0.75) 100%
    ),
    rgba(255, 255, 255, 0.9);
  box-shadow: 0 6px 18px rgba(15, 23, 42, 0.05);
}

/* Mobile optimizations */
@media (max-width: 768px) {
  .collapse-container {
    margin-bottom: 12px;
    border-radius: 10px;
  }

  .collapse-container::after {
    border-radius: 9px;
  }

  .collapse-header {
    min-height: 50px;
    padding: 12px 14px;
    margin: 0 !important;
    gap: 10px;
    font-size: 15px;
  }

  .collapse-header-content {
    gap: 8px;
  }

  .collapse-header-icon {
    width: 24px;
    height: 24px;
    border-radius: 7px;
    font-size: 12px;
  }

  .collapse-chevron {
    width: 22px;
    height: 22px;
    font-size: 11px;
  }

  .collapse-content-inner {
    padding: 12px 14px 14px 14px;
  }

  .collapse-content-inner::before {
    left: 14px;
    right: 14px;
  }

  .collapse-group {
    gap: 6px;
    padding: 6px;
    border-radius: 12px;
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  .collapse-container,
  .collapse-header,
  .collapse-header-icon,
  .collapse-chevron,
  .collapse-content,
  .collapse-content-inner,
  .collapse-content-inner::before,
  .collapse-container::before {
    transition: none;
  }

  .collapse-container:hover {
    transform: none;
  }

  .collapse-container.open .collapse-content {
    max-height: none;
  }

  .collapse-content-inner {
    transform: none;
  }
}

/* Print styles */
@media print {
  .collapse-container {
    border: 1px solid #cccccc;
    box-shadow: none;
    background: #ffffff;
    page-break-inside: avoid;
    transform: none;
  }

  .collapse-container::before,
  .collapse-container::after {
    display: none;
  }

  .collapse-container .collapse-content {
    max-height: none !important;
    overflow: visible !important;
  }

  .collapse-content-inner {
    opacity: 1 !important;
    transform: none !important;
  }

  .collapse-chevron {
    display: none;
  }
}

/* Accessibility - High contrast mode */
@media (prefers-contrast: high) {
  .collapse-container {
    border-width: 2px;
  }

  .collapse-header:focus,
  .collapse-header:focus-visible {
    outline: 3px solid var(--primary-blue);
    outline-offset: 2px;
    box-shadow: none;
  }

  .collapse-header-icon,
  .collapse-chevron {
    border-width: 2px;
  }
}