/**
 * Harshya.in — Enterprise Frontend Engineering Components & Architecture
 * Theme: Royal Crimson Velvet (#801321), Kashmir Gold-Leaf (#C87A1E), Deodar Pine (#2F4A3C), Parchment (#FAF7F2)
 * Features:
 *  - Custom Web Components (<jk-toast>, <jk-offline-banner>, <jk-error-boundary>, <jk-itinerary-card>, <jk-stat-badge>)
 *  - Progressive Island Hydration States ([data-hydrated="true"])
 *  - High-Contrast Focus States & Reduced Motion Support
 *  - Zero-CLS Responsive Layouts
 */

:root {
  --jk-crimson: #9E483F;
  --jk-crimson-dark: #82362E;
  --jk-crimson-light: #FAF0E1;
  --jk-gold: #C17A3A;
  --jk-gold-light: #fef8ee;
  --jk-pine: #2f4a3c;
  --jk-pine-light: #edf4f0;
  --jk-parchment: #FBF8F3;
  --jk-surface: #ffffff;
  --jk-border: rgba(128, 19, 33, 0.14);
  --jk-text-primary: #1f2937;
  --jk-text-muted: #374151;
  --jk-shadow-sm: 0 2px 6px rgba(0, 0, 0, 0.05);
  --jk-shadow-md: 0 6px 18px rgba(128, 19, 33, 0.08);
  --jk-shadow-lg: 0 12px 32px rgba(128, 19, 33, 0.12);
  --jk-radius: 12px;
  --jk-radius-sm: 8px;
  --jk-radius-pill: 9999px;
  --jk-font: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
}

/* ==========================================================================
   1. OFFLINE BANNER (<jk-offline-banner>)
   ========================================================================== */
jk-offline-banner {
  display: block;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100000;
  background: linear-gradient(135deg, #78350f, #92400e);
  color: #fffbeb;
  padding: 10px 16px;
  font-family: var(--jk-font);
  font-size: 13px;
  font-weight: 600;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.25);
  transform: translateY(-100%);
  transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  border-bottom: 2px solid #f59e0b;
}

jk-offline-banner[data-visible="true"] {
  transform: translateY(0);
}

jk-offline-banner.banner-reconnected {
  background: linear-gradient(135deg, #065f46, #047857);
  color: #ecfdf5;
  border-bottom-color: #10b981;
}

.jk-offline-content {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.jk-offline-info {
  display: flex;
  align-items: center;
  gap: 8px;
}

.jk-offline-pulse {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #f59e0b;
  display: inline-block;
  animation: jk-pulse-glow 1.5s infinite;
}

.banner-reconnected .jk-offline-pulse {
  background: #10b981;
}

@keyframes jk-pulse-glow {
  0% { transform: scale(0.9); opacity: 0.8; }
  50% { transform: scale(1.3); opacity: 1; box-shadow: 0 0 10px rgba(245, 158, 11, 0.8); }
  100% { transform: scale(0.9); opacity: 0.8; }
}

.jk-offline-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.jk-offline-btn {
  background: rgba(255, 255, 255, 0.18);
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.3);
  padding: 4px 10px;
  border-radius: var(--jk-radius-sm);
  font-size: 11.5px;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.2s;
  text-decoration: none;
}

.jk-offline-btn:hover {
  background: rgba(255, 255, 255, 0.32);
}

/* ==========================================================================
   2. TOAST NOTIFICATIONS (<jk-toast>)
   ========================================================================== */
#jk-toast-stack {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 99999;
  display: flex;
  flex-direction: column-reverse;
  gap: 10px;
  pointer-events: none;
  max-width: 400px;
  width: calc(100vw - 32px);
}

jk-toast {
  pointer-events: auto;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 16px;
  background: #ffffff;
  color: var(--jk-text-primary);
  border-radius: var(--jk-radius);
  border: 1px solid var(--jk-border);
  box-shadow: var(--jk-shadow-lg);
  font-family: var(--jk-font);
  font-size: 13.5px;
  line-height: 1.45;
  transform: translateY(20px) scale(0.96);
  opacity: 0;
  transition: all 0.28s cubic-bezier(0.16, 1, 0.3, 1);
}

jk-toast[data-show="true"] {
  transform: translateY(0) scale(1);
  opacity: 1;
}

jk-toast.toast-success {
  border-left: 4px solid #10b981;
}

jk-toast.toast-error {
  border-left: 4px solid #ef4444;
}

jk-toast.toast-warning {
  border-left: 4px solid var(--jk-gold);
}

jk-toast.toast-info {
  border-left: 4px solid var(--jk-crimson);
}

.jk-toast-icon {
  font-size: 18px;
  line-height: 1;
  flex-shrink: 0;
}

.jk-toast-body {
  flex: 1;
}

.jk-toast-title {
  font-weight: 700;
  font-size: 13px;
  margin-bottom: 2px;
  color: var(--jk-crimson);
}

.toast-success .jk-toast-title { color: #065f46; }
.toast-error .jk-toast-title { color: #991b1b; }
.toast-warning .jk-toast-title { color: #92400e; }

.jk-toast-close {
  background: transparent;
  border: none;
  color: var(--jk-text-muted);
  cursor: pointer;
  padding: 2px;
  font-size: 16px;
  line-height: 1;
  transition: color 0.15s;
}

.jk-toast-close:hover {
  color: var(--jk-crimson);
}

/* ==========================================================================
   3. ERROR BOUNDARY (<jk-error-boundary>)
   ========================================================================== */
jk-error-boundary {
  display: block;
}

.jk-error-fallback {
  background: var(--jk-crimson-light);
  border: 1px solid rgba(128, 19, 33, 0.22);
  border-radius: var(--jk-radius);
  padding: 20px;
  margin: 16px 0;
  font-family: var(--jk-font);
  color: var(--jk-crimson-dark);
  text-align: center;
}

.jk-error-icon {
  font-size: 32px;
  margin-bottom: 8px;
}

.jk-error-title {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 6px;
  color: var(--jk-crimson);
}

.jk-error-message {
  font-size: 13px;
  color: #4b5563;
  margin-bottom: 14px;
}

.jk-error-retry-btn {
  background: var(--jk-crimson);
  color: #ffffff;
  border: none;
  padding: 8px 18px;
  border-radius: var(--jk-radius-sm);
  font-size: 12.5px;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(128, 19, 33, 0.25);
  transition: all 0.2s ease;
}

.jk-error-retry-btn:hover {
  background: var(--jk-crimson-dark);
  transform: translateY(-1px);
}

/* ==========================================================================
   4. STAT BADGE (<jk-stat-badge>)
   ========================================================================== */
jk-stat-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: var(--jk-radius-pill);
  font-family: var(--jk-font);
  font-size: 12px;
  font-weight: 600;
  background: var(--jk-parchment);
  border: 1px solid var(--jk-border);
  color: var(--jk-text-primary);
  line-height: 1.2;
}

jk-stat-badge[data-variant="gold"] {
  background: var(--jk-gold-light);
  border-color: rgba(200, 122, 30, 0.3);
  color: #92400e;
}

jk-stat-badge[data-variant="pine"] {
  background: var(--jk-pine-light);
  border-color: rgba(47, 74, 60, 0.3);
  color: var(--jk-pine);
}

jk-stat-badge[data-variant="crimson"] {
  background: var(--jk-crimson-light);
  border-color: rgba(128, 19, 33, 0.25);
  color: var(--jk-crimson);
}

/* ==========================================================================
   5. INTERACTIVE ITINERARY CARD (<jk-itinerary-card>)
   ========================================================================== */
jk-itinerary-card {
  display: block;
  background: var(--jk-surface);
  border-radius: var(--jk-radius);
  border: 1px solid var(--jk-border);
  box-shadow: var(--jk-shadow-sm);
  overflow: hidden;
  font-family: var(--jk-font);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

jk-itinerary-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--jk-shadow-md);
  border-color: var(--jk-gold);
}

.jk-itinerary-header {
  padding: 16px 18px 12px;
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.jk-itinerary-title {
  font-size: 16px;
  font-weight: 800;
  color: var(--jk-crimson);
  margin: 0;
}

.jk-itinerary-price {
  font-size: 16px;
  font-weight: 800;
  color: var(--jk-gold);
}

.jk-itinerary-body {
  padding: 14px 18px;
}

.jk-itinerary-route {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  margin-bottom: 12px;
  font-size: 12px;
  color: var(--jk-text-muted);
}

.jk-itinerary-route-step {
  font-weight: 600;
  color: var(--jk-text-primary);
}

.jk-itinerary-footer {
  padding: 12px 18px;
  background: var(--jk-parchment);
  border-top: 1px solid var(--jk-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.jk-itinerary-btn-select {
  background: var(--jk-crimson);
  color: #ffffff;
  border: none;
  padding: 6px 14px;
  border-radius: var(--jk-radius-sm);
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.18s ease;
}

.jk-itinerary-btn-select:hover {
  background: var(--jk-crimson-dark);
}

/* ==========================================================================
   6. PROGRESSIVE HYDRATION STATES
   ========================================================================== */
[data-island] {
  min-height: 20px;
}

[data-island][data-hydrated="false"] {
  opacity: 0.96;
}

[data-island][data-hydrated="true"] {
  opacity: 1;
  transition: opacity 0.25s ease-in;
}

/* Accessible reduced-motion policy */
@media (prefers-reduced-motion: reduce) {
  jk-toast, jk-offline-banner, jk-itinerary-card, [data-island] {
    transition: none !important;
    animation: none !important;
  }
}