/* ==========================================================================
   platform-guide.css — Minimalist Flat Design
   Cmd+K Command Palette
   ========================================================================== */

/* === CSS Custom Properties === */
:root {
  --pg-z-backdrop: 1040;
  --pg-z-modal: 1050;
  --pg-z-trigger: 1060;
}

/* ==========================================================================
   Backdrop
   ========================================================================== */

.pg-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: var(--pg-z-backdrop);
  opacity: 0;
  transition: opacity 150ms ease;
}

.pg-backdrop.pg-open {
  opacity: 1;
}

/* ==========================================================================
   Modal
   ========================================================================== */

.pg-modal {
  position: fixed;
  top: 20%;
  left: 50%;
  transform: translateX(-50%) translateY(-8px) scale(0.98);
  width: 580px;
  max-height: 480px;
  background: #111827;
  border: 1px solid #374151;
  border-radius: 12px;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.4);
  display: flex;
  flex-direction: column;
  z-index: var(--pg-z-modal);
  opacity: 0;
  transition: opacity 150ms ease, transform 150ms ease;
  pointer-events: none;
}

.pg-modal.pg-open {
  opacity: 1;
  transform: translateX(-50%) translateY(0) scale(1);
  pointer-events: auto;
}

/* ==========================================================================
   Search
   ========================================================================== */

.pg-search-wrap {
  padding: 16px;
  border-bottom: 1px solid #374151;
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}

#pg-search {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: #f3f4f6;
  font-size: 16px;
  font-family: inherit;
  min-width: 0;
}

#pg-search::placeholder {
  color: #6b7280;
}

.pg-kbd {
  font-size: 11px;
  color: #6b7280;
  background: #1f2937;
  border: 1px solid #374151;
  padding: 2px 6px;
  border-radius: 4px;
  font-family: inherit;
  white-space: nowrap;
  flex-shrink: 0;
}

/* ==========================================================================
   Categories
   ========================================================================== */

.pg-categories {
  padding: 8px 16px;
  display: flex;
  gap: 6px;
  border-bottom: 1px solid #374151;
  flex-shrink: 0;
  overflow-x: auto;
  scrollbar-width: none;
}

.pg-categories::-webkit-scrollbar {
  display: none;
}

.pg-cat {
  padding: 4px 12px;
  border-radius: 6px;
  border: 1px solid #374151;
  background: transparent;
  color: #9ca3af;
  font-size: 12px;
  cursor: pointer;
  transition: all 100ms ease;
  white-space: nowrap;
  font-family: inherit;
}

.pg-cat:hover {
  border-color: #4b5563;
  color: #e5e7eb;
}

.pg-cat.active {
  background: #2563EB;
  border-color: #2563EB;
  color: #ffffff;
}

/* ==========================================================================
   Results
   ========================================================================== */

.pg-results {
  flex: 1;
  overflow-y: auto;
  padding: 8px;
  scrollbar-width: thin;
  scrollbar-color: #374151 transparent;
  min-height: 0;
}

.pg-results::-webkit-scrollbar {
  width: 4px;
}

.pg-results::-webkit-scrollbar-track {
  background: transparent;
}

.pg-results::-webkit-scrollbar-thumb {
  background: #374151;
  border-radius: 4px;
}

/* === Card === */

.pg-card {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: 8px;
  text-decoration: none;
  color: #e5e7eb;
  transition: background 100ms ease;
  cursor: pointer;
}

.pg-card:hover {
  background: #1f2937;
}

.pg-card.pg-card-active {
  background: #1f2937;
  outline: 1px solid #374151;
}

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

.pg-card-icon {
  width: 36px;
  height: 36px;
  min-width: 36px;
  border-radius: 8px;
  background: #1f2937;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #9ca3af;
  flex-shrink: 0;
}

.pg-card-active .pg-card-icon,
.pg-card:hover .pg-card-icon {
  color: #3B82F6;
}

/* === Card Body === */

.pg-card-body {
  flex: 1;
  min-width: 0;
}

.pg-card-title {
  font-size: 14px;
  font-weight: 500;
  color: #f3f4f6;
  line-height: 1.3;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.pg-card-desc {
  font-size: 12px;
  color: #9ca3af;
  line-height: 1.3;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-top: 2px;
}

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

.pg-card-cat {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 2px 6px;
  border-radius: 4px;
  flex-shrink: 0;
}

.pg-card-cat[data-cat="pages"] {
  background: rgba(59, 130, 246, 0.1);
  color: #60a5fa;
}

.pg-card-cat[data-cat="concepts"] {
  background: rgba(139, 92, 246, 0.1);
  color: #06B6D4;
}

.pg-card-cat[data-cat="features"] {
  background: rgba(16, 185, 129, 0.1);
  color: #34d399;
}

.pg-card-cat[data-cat="actions"] {
  background: rgba(245, 158, 11, 0.1);
  color: #fbbf24;
}

/* === Card Arrow === */

.pg-card-arrow {
  color: #374151;
  flex-shrink: 0;
  transition: color 100ms ease;
}

.pg-card:hover .pg-card-arrow,
.pg-card-active .pg-card-arrow {
  color: #6b7280;
}

/* ==========================================================================
   Empty State
   ========================================================================== */

.pg-empty {
  text-align: center;
  padding: 32px 16px;
  color: #6b7280;
  font-size: 14px;
}

/* ==========================================================================
   Footer
   ========================================================================== */

.pg-footer {
  display: flex;
  gap: 16px;
  padding: 10px 16px;
  border-top: 1px solid #374151;
  font-size: 11px;
  color: #6b7280;
  flex-shrink: 0;
  align-items: center;
  flex-wrap: wrap;
}

.pg-footer kbd {
  font-size: 10px;
  color: #6b7280;
  background: #1f2937;
  border: 1px solid #374151;
  padding: 1px 4px;
  border-radius: 4px;
  font-family: inherit;
}

/* ==========================================================================
   Trigger Button
   ========================================================================== */

.pg-trigger {
  position: fixed;
  bottom: 24px;
  inset-inline-end: 24px;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  border: none;
  color: #ffffff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--pg-z-trigger);
  transition: transform 200ms cubic-bezier(0.4, 0, 0.2, 1),
              filter 200ms ease;
}

.pg-trigger i {
  width: 22px;
  height: 22px;
  pointer-events: none;
}

/* Pulse ring — runs once on first appearance, doesn't touch app-shell's box-shadow */
.pg-trigger::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 50%;
  animation: pgTriggerPulse 1.5s ease-out 0.4s 1 forwards;
  pointer-events: none;
}

@keyframes pgTriggerPulse {
  0%   { box-shadow: 0 0 0 0 rgba(10, 132, 255, 0.55); }
  100% { box-shadow: 0 0 0 16px rgba(10, 132, 255, 0); }
}

.pg-trigger:focus-visible {
  outline: 3px solid rgba(10, 132, 255, 0.5);
  outline-offset: 3px;
}

.pg-trigger:hover {
  transform: translateY(-2px) scale(1.04);
  filter: brightness(1.08);
}

.pg-trigger:active {
  transform: translateY(0) scale(0.96);
  filter: brightness(0.98);
}

/* Hide trigger when modal is open */
body.pg-active .pg-trigger {
  opacity: 0;
  pointer-events: none;
}

/* ==========================================================================
   Body Scroll Lock
   ========================================================================== */

body.pg-active {
  overflow: hidden;
}

/* ==========================================================================
   RTL Support
   ========================================================================== */

html[dir="rtl"] .pg-card-arrow {
  transform: scaleX(-1);
}

/* ==========================================================================
   Mobile Responsive
   ========================================================================== */

@media (max-width: 640px) {
  .pg-modal {
    width: calc(100% - 32px);
    top: 16px;
    max-height: calc(100dvh - 32px);
  }

  .pg-trigger {
    bottom: 20px;
    inset-inline-end: 16px;
    width: 56px;
    height: 56px;
  }
}

/* ==========================================================================
   Light Theme
   ========================================================================== */

[data-theme="light"] .pg-modal {
  background: #fffdf8df8;
  border-color: #e5e7eb;
  box-shadow: 0 16px 48px rgba(60, 40, 20, 0.12);
}

[data-theme="light"] .pg-search-wrap {
  border-bottom-color: #e5e7eb;
}

[data-theme="light"] #pg-search {
  color: #111827;
}

[data-theme="light"] #pg-search::placeholder {
  color: #9ca3af;
}

[data-theme="light"] .pg-kbd {
  background: #f3f4f6;
  border-color: #e5e7eb;
  color: #6b7280;
}

[data-theme="light"] .pg-categories {
  border-bottom-color: #e5e7eb;
}

[data-theme="light"] .pg-cat {
  border-color: #e5e7eb;
  color: #6b7280;
}

[data-theme="light"] .pg-cat:hover {
  border-color: #d1d5db;
  color: #374151;
}

[data-theme="light"] .pg-cat.active {
  background: #1D4ED8;
  border-color: #1D4ED8;
  color: #fffdf8df8;
}

[data-theme="light"] .pg-card {
  color: #374151;
}

[data-theme="light"] .pg-card:hover,
[data-theme="light"] .pg-card.pg-card-active {
  background: #f9fafb;
}

[data-theme="light"] .pg-card.pg-card-active {
  outline-color: #e5e7eb;
}

[data-theme="light"] .pg-card-icon {
  background: #f3f4f6;
  color: #6b7280;
}

[data-theme="light"] .pg-card-active .pg-card-icon,
[data-theme="light"] .pg-card:hover .pg-card-icon {
  color: #1D4ED8;
}

[data-theme="light"] .pg-card-title {
  color: #111827;
}

[data-theme="light"] .pg-card-desc {
  color: #6b7280;
}

[data-theme="light"] .pg-card-arrow {
  color: #d1d5db;
}

[data-theme="light"] .pg-card:hover .pg-card-arrow,
[data-theme="light"] .pg-card-active .pg-card-arrow {
  color: #9ca3af;
}

[data-theme="light"] .pg-empty {
  color: #9ca3af;
}

[data-theme="light"] .pg-footer {
  border-top-color: #e5e7eb;
  color: #9ca3af;
}

[data-theme="light"] .pg-footer kbd {
  background: #f3f4f6;
  border-color: #e5e7eb;
  color: #6b7280;
}

[data-theme="light"] .pg-trigger {
  background: #fffdf8df8;
  border-color: #e5e7eb;
  color: #6b7280;
  box-shadow: 0 2px 8px rgba(60, 40, 20, 0.08);
}

[data-theme="light"] .pg-trigger:hover {
  background: #f9fafb;
  color: #374151;
}

[data-theme="light"] .pg-results::-webkit-scrollbar-thumb {
  background: #d1d5db;
}

[data-theme="light"] .pg-results {
  scrollbar-color: #d1d5db transparent;
}

[data-theme="light"] .pg-backdrop {
  background: rgba(60, 40, 20, 0.3);
}