/* ==========================================================================
   DevPilot-AI - AI Prompt Library Vault CSS
   ========================================================================== */

/* Curated Collections Horizontal Bar */
.prompt-collections-wrapper {
  margin-bottom: 1.5rem;
}

.prompt-collections-scroll {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  overflow-x: auto;
  padding-bottom: 6px;
  scrollbar-width: thin;
  scrollbar-color: #cbd5e1 transparent;
  scroll-behavior: smooth;
}

.prompt-collections-scroll::-webkit-scrollbar {
  height: 4px;
}

.prompt-collections-scroll::-webkit-scrollbar-thumb {
  background-color: #cbd5e1;
  border-radius: 4px;
}

.collection-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.45rem 0.85rem;
  border-radius: var(--radius-full);
  font-size: 0.8125rem;
  font-weight: 600;
  border: 1px solid var(--color-outline-variant);
  background: var(--color-surface);
  color: var(--color-on-surface);
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.collection-chip:hover {
  background: var(--color-surface-container);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.collection-chip.active {
  background: var(--color-primary);
  color: #ffffff;
  border-color: var(--color-primary);
  box-shadow: 0 2px 8px rgba(79, 70, 229, 0.25);
}

/* Prompt Toolbar */
.prompt-toolbar-wrapper {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 2rem;
}

.prompt-toolbar-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.prompt-quick-filters {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.prompt-quick-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.4rem 0.85rem;
  border-radius: var(--radius-md);
  font-size: 0.8125rem;
  font-weight: 600;
  border: 1px solid var(--color-outline-variant);
  background: var(--color-surface);
  color: var(--color-on-surface-variant);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.prompt-quick-btn:hover {
  background: var(--color-surface-container);
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.prompt-quick-btn.active {
  background: var(--color-primary);
  color: #ffffff;
  border-color: var(--color-primary);
  box-shadow: 0 2px 8px rgba(79, 70, 229, 0.25);
}

.prompt-quick-btn.btn-saved.active {
  background: #f59e0b;
  border-color: #d97706;
  color: #ffffff;
  box-shadow: 0 2px 8px rgba(245, 158, 11, 0.25);
}

.prompt-results-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8125rem;
  color: #64748b;
  padding: 0.25rem 0;
}

.clear-filters-btn {
  color: var(--color-primary);
  font-weight: 600;
  cursor: pointer;
  background: none;
  border: none;
  font-size: 0.8125rem;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

.clear-filters-btn:hover {
  text-decoration: underline;
}

/* Category & Difficulty Badges */
.prompt-badge {
  font-size: 0.6875rem;
  font-weight: 700;
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-full);
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  text-transform: uppercase;
  letter-spacing: 0.025em;
}

.badge-development { background: #e0e7ff; color: #4338ca; }
.badge-dsa---interview, .badge-dsa-interview { background: #fee2e2; color: #dc2626; }
.badge-database { background: #ede9fe; color: #7c3aed; }
.badge-core-computer-science { background: #fef3c7; color: #b45309; }
.badge-engineering { background: #d1fae5; color: #059669; }
.badge-devops---cloud, .badge-devops-cloud { background: #ffedd5; color: #c2410c; }
.badge-ai---ml, .badge-ai-ml { background: #e0f2fe; color: #0284c7; }
.badge-career { background: #fdf4ff; color: #c026d3; }
.badge-general { background: #f1f5f9; color: #475569; }

/* Difficulty Badges */
.diff-badge {
  font-size: 0.6875rem;
  font-weight: 700;
  padding: 0.15rem 0.5rem;
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.025em;
}

.diff-beginner, .diff-easy { background: #ecfdf5; color: #059669; border: 1px solid #a7f3d0; }
.diff-intermediate { background: #eff6ff; color: #2563eb; border: 1px solid #bfdbfe; }
.diff-advanced { background: #fef2f2; color: #dc2626; border: 1px solid #fecaca; }
.diff-interview { background: #f5f3ff; color: #7c3aed; border: 1px solid #ddd6fe; }

/* Variable Counter Chip */
.var-counter-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.6875rem;
  font-weight: 600;
  padding: 0.15rem 0.45rem;
  border-radius: var(--radius-full);
  background: #f1f5f9;
  color: #475569;
  border: 1px solid #e2e8f0;
}

/* Prompt Card */
.prompt-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background: var(--color-surface);
  border: 1px solid var(--color-outline-variant);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  transition: all var(--transition-normal);
  height: 100%;
}

.prompt-card:hover {
  transform: translateY(-2px);
  border-color: rgba(79, 70, 229, 0.35);
  box-shadow: var(--shadow-hover);
}

.prompt-preview-box {
  background: var(--color-surface-container-low);
  border: 1px solid var(--color-outline-variant);
  border-radius: var(--radius-md);
  padding: 0.85rem;
  font-size: 0.8125rem;
  color: #334155;
  line-height: 1.55;
  max-height: 140px;
  overflow: hidden;
  position: relative;
  font-family: 'Inter', system-ui, sans-serif;
  white-space: pre-line;
}

.prompt-preview-box::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 40px;
  background: linear-gradient(transparent, var(--color-surface-container-low));
  pointer-events: none;
}

/* Copy Button Feedback */
.btn-copy-prompt {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  padding: 0.45rem 0.75rem;
  border-radius: var(--radius-md);
  font-size: 0.8125rem;
  font-weight: 600;
  background: var(--color-surface);
  border: 1px solid var(--color-outline-variant);
  color: var(--color-on-surface-variant);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-copy-prompt:hover {
  background: var(--color-surface-container);
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.btn-copy-prompt.copied {
  background: #ecfdf5 !important;
  color: #059669 !important;
  border-color: #10b981 !important;
}

/* Prompt Details & Interactive Variable Modal */
.prompt-modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 60;
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
}

.prompt-modal-backdrop.open {
  opacity: 1;
  pointer-events: auto;
}

.prompt-modal-card {
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-outline-variant);
  width: 100%;
  max-width: 860px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  transform: scale(0.96);
  transition: transform var(--transition-normal);
  overflow: hidden;
}

.prompt-modal-backdrop.open .prompt-modal-card {
  transform: scale(1);
}

.prompt-modal-header {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--color-outline-variant);
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  background: var(--color-surface-container-low);
}

.prompt-modal-body {
  padding: 1.5rem;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

/* Interactive Variable Input Box */
.var-fill-section {
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: var(--radius-lg);
  padding: 1rem;
}

.var-fill-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8125rem;
  font-weight: 700;
  color: #1e293b;
  margin-bottom: 0.75rem;
}

.var-input-grid {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.var-input-group {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.var-input-label {
  font-size: 0.75rem;
  font-weight: 700;
  color: #475569;
  font-family: 'Fira Code', monospace;
}

.var-text-input {
  width: 100%;
  padding: 0.5rem 0.75rem;
  font-size: 0.8125rem;
  background: #ffffff;
  border: 1px solid #cbd5e1;
  border-radius: var(--radius-md);
  color: #0f172a;
  outline: none;
  transition: border-color 0.2s;
  font-family: 'Inter', sans-serif;
}

.var-text-input:focus {
  border-color: #4f46e5;
  box-shadow: 0 0 0 1px #4f46e5;
}

textarea.var-text-input {
  min-height: 60px;
  resize: vertical;
  font-family: 'Fira Code', monospace;
  font-size: 0.75rem;
}

/* Full Prompt Container */
.full-prompt-box {
  background: #0f172a;
  color: #f8fafc;
  border-radius: var(--radius-lg);
  padding: 1rem 1.25rem;
  font-family: 'Fira Code', monospace;
  font-size: 0.8125rem;
  line-height: 1.6;
  white-space: pre-wrap;
  max-height: 340px;
  overflow-y: auto;
  border: 1px solid #334155;
}

.full-prompt-box .highlight-var {
  background: rgba(245, 158, 11, 0.25);
  color: #fbbf24;
  border-radius: 3px;
  padding: 0 3px;
}

/* Related Prompts Grid */
.related-prompts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 0.75rem;
}

.related-prompt-card {
  background: var(--color-surface);
  border: 1px solid var(--color-outline-variant);
  border-radius: var(--radius-md);
  padding: 0.75rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.related-prompt-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-1px);
  box-shadow: 0 2px 8px rgba(79, 70, 229, 0.12);
}

@media (max-width: 640px) {
  .prompt-modal-card {
    max-height: 95vh;
  }
  .prompt-modal-header {
    padding: 1rem;
  }
  .prompt-modal-body {
    padding: 1rem;
  }
}