/* ==========================================================================
   Japanese & Sakura Aesthetic Enhancements
   Delicate ambient patterns, Hanko seal stamp, and falling petals effect
   ========================================================================== */

/* --- Japanese Washi Background with subtle Seigaiha / Sakura pattern --- */
.japanese-bg {
  position: relative;
  background-color: var(--bg-page);
  /* Subtle Japanese geometric wave overlay */
  background-image:
    radial-gradient(1000px circle at 15% -5%, rgba(244, 63, 94, 0.04), transparent 50%),
    radial-gradient(800px circle at 90% 15%, rgba(251, 113, 133, 0.05), transparent 45%),
    radial-gradient(900px circle at 50% 100%, rgba(244, 63, 94, 0.03), transparent 60%);
  background-attachment: fixed;
}

/* Subtle grid line overlay respecting VPS Design System */
.japanese-bg::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  pointer-events: none;
  background-size: 48px 48px;
  background-image:
    linear-gradient(to right, rgba(244, 63, 94, 0.025) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(244, 63, 94, 0.025) 1px, transparent 1px);
  z-index: 0;
}

/* --- Sakura Petals Canvas Overlay --- */
#sakura-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: 1;
  opacity: 0.85;
  transition: opacity var(--duration-normal) var(--ease-standard);
}

#sakura-canvas.paused {
  opacity: 0;
}

/* --- Traditional Japanese Hanko Seal (判子 / 印鑑) --- */
.hanko-stamp {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--hanko-red);
  color: var(--hanko-red);
  background-color: var(--hanko-bg);
  padding: 4px 10px;
  border-radius: var(--radius-xs);
  font-family: var(--font-jp);
  font-weight: 700;
  line-height: 1.1;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  position: relative;
  transform: rotate(-3deg);
  box-shadow: 0 0 0 1px rgba(220, 38, 38, 0.2);
  user-select: none;
}

.hanko-stamp::after {
  content: '';
  position: absolute;
  inset: 1px;
  border: 1px dashed rgba(220, 38, 38, 0.4);
  border-radius: 2px;
  pointer-events: none;
}

.hanko-stamp .hanko-kanji {
  font-size: 14px;
  font-weight: 900;
  letter-spacing: 2px;
}

.hanko-stamp .hanko-sub {
  font-size: 9px;
  font-family: var(--font-mono);
  font-weight: 700;
  letter-spacing: 0.1em;
}

/* --- Kanji Watermark / Floating Background Accents --- */
.kanji-watermark {
  position: absolute;
  right: var(--space-4);
  bottom: var(--space-2);
  font-family: var(--font-jp);
  font-size: 72px;
  font-weight: 900;
  color: rgba(244, 63, 94, 0.04);
  line-height: 1;
  user-select: none;
  pointer-events: none;
  z-index: 0;
  transition: color var(--duration-normal) var(--ease-standard);
}

.card:hover .kanji-watermark {
  color: rgba(244, 63, 94, 0.08);
}

/* --- Japanese Torii / Blossom Badge --- */
.sakura-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 4px 12px;
  background: var(--sakura-50);
  border: 1px solid var(--sakura-200);
  border-radius: var(--radius-full);
  color: var(--sakura-600);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.sakura-badge .blossom-icon {
  animation: gentle-spin 12s linear infinite;
  display: inline-block;
  transform-origin: center;
}

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

/* --- Flight Path Animation --- */
.flight-path-line {
  position: relative;
  height: 2px;
  background: repeating-linear-gradient(
    to right,
    var(--sakura-300) 0,
    var(--sakura-300) 6px,
    transparent 6px,
    transparent 12px
  );
  width: 100%;
}

.flight-plane-icon {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: var(--bg-card);
  padding: 0 var(--space-2);
  color: var(--sakura-500);
  transition: transform var(--duration-normal) var(--ease-out-back);
}

.flight-card:hover .flight-plane-icon {
  transform: translate(-50%, -50%) scale(1.18);
  color: var(--sakura-600);
}

/* --- Glowing Live Indicator --- */
.live-pulse {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--green);
  position: relative;
  flex-shrink: 0;
}

.live-pulse::after {
  content: '';
  position: absolute;
  inset: -3px;
  border-radius: 50%;
  background-color: var(--green);
  opacity: 0.4;
  animation: pulse-ring 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes pulse-ring {
  0% { transform: scale(0.8); opacity: 0.8; }
  100% { transform: scale(2.2); opacity: 0; }
}

/* --- Toast notification --- */
.toast-notification {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  background: var(--text-primary);
  color: var(--text-inverted);
  padding: 12px 20px;
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 500;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  z-index: 1000;
  transform: translateY(100px);
  opacity: 0;
  transition: all var(--duration-normal) var(--ease-out-back);
  pointer-events: none;
}

.toast-notification.show {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}