/* Ethereal Frosted Glassmorphism Styles for 轻语机场 (Qingyu Airport) */

:root {
  --qingyu-teal: #0d9488;
  --qingyu-cyan: #06b6d4;
  --qingyu-emerald: #10b981;
  --qingyu-sky: #0284c7;
}

/* Ambient Breathing Glow Spheres */
.ambient-sphere {
  position: fixed;
  border-radius: 9999px;
  filter: blur(90px);
  pointer-events: none;
  z-index: 0;
  opacity: 0.55;
  transition: opacity 0.6s ease;
}

@keyframes float-slow {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(40px, 30px) scale(1.08); }
  100% { transform: translate(-20px, 50px) scale(0.95); }
}

@keyframes float-reverse {
  0% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(-35px, -25px) scale(1.06); }
  100% { transform: translate(25px, -40px) scale(0.96); }
}

.ambient-sphere-1 {
  top: -8%;
  left: 12%;
  width: 48rem;
  height: 48rem;
  background: radial-gradient(circle, rgba(20, 184, 166, 0.38) 0%, rgba(6, 182, 212, 0.18) 45%, transparent 70%);
  animation: float-slow 20s ease-in-out infinite alternate;
}

.ambient-sphere-2 {
  top: 36%;
  right: -6%;
  width: 42rem;
  height: 42rem;
  background: radial-gradient(circle, rgba(14, 165, 233, 0.32) 0%, rgba(20, 184, 166, 0.12) 50%, transparent 70%);
  animation: float-reverse 24s ease-in-out infinite alternate;
}

.ambient-sphere-3 {
  bottom: 8%;
  left: -8%;
  width: 38rem;
  height: 38rem;
  background: radial-gradient(circle, rgba(16, 185, 129, 0.28) 0%, rgba(6, 182, 212, 0.12) 50%, transparent 70%);
  animation: float-slow 22s ease-in-out infinite alternate;
}

.dark .ambient-sphere-1 {
  background: radial-gradient(circle, rgba(20, 184, 166, 0.22) 0%, rgba(6, 182, 212, 0.08) 50%, transparent 70%);
  opacity: 0.65;
}

.dark .ambient-sphere-2 {
  background: radial-gradient(circle, rgba(14, 165, 233, 0.18) 0%, rgba(20, 184, 166, 0.06) 50%, transparent 70%);
  opacity: 0.65;
}

.dark .ambient-sphere-3 {
  background: radial-gradient(circle, rgba(16, 185, 129, 0.16) 0%, rgba(6, 182, 212, 0.06) 50%, transparent 70%);
  opacity: 0.65;
}

/* Glass Panels & Cards */
.glass-panel {
  background: rgba(255, 255, 255, 0.72) !important;
  backdrop-filter: blur(20px) saturate(180%) !important;
  -webkit-backdrop-filter: blur(20px) saturate(180%) !important;
  border: 1px solid rgba(255, 255, 255, 0.8) !important;
  box-shadow: 0 10px 30px -5px rgba(13, 148, 136, 0.06), 0 4px 6px -2px rgba(0, 0, 0, 0.02) !important;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1) !important;
}

.dark .glass-panel {
  background: rgba(15, 23, 42, 0.68) !important;
  border: 1px solid rgba(255, 255, 255, 0.08) !important;
  box-shadow: 0 10px 30px -5px rgba(0, 0, 0, 0.45) !important;
}

.glass-panel:hover {
  transform: translateY(-3px) !important;
  border-color: rgba(20, 184, 166, 0.45) !important;
  box-shadow: 0 20px 35px -5px rgba(13, 148, 136, 0.12), 0 10px 10px -5px rgba(0, 0, 0, 0.03) !important;
}

.dark .glass-panel:hover {
  border-color: rgba(45, 212, 191, 0.35) !important;
  box-shadow: 0 20px 35px -5px rgba(0, 0, 0, 0.6), 0 0 25px rgba(20, 184, 166, 0.12) !important;
}

/* Glass Hero */
.glass-hero {
  background: linear-gradient(135deg, rgba(13, 148, 136, 0.92) 0%, rgba(6, 182, 212, 0.88) 48%, rgba(2, 132, 199, 0.92) 100%) !important;
  backdrop-filter: blur(24px) saturate(190%) !important;
  -webkit-backdrop-filter: blur(24px) saturate(190%) !important;
  border: 1px solid rgba(255, 255, 255, 0.35) !important;
  box-shadow: 0 25px 60px -15px rgba(6, 182, 212, 0.3), inset 0 1px 0 rgba(255, 255, 255, 0.4) !important;
}

.dark .glass-hero {
  background: linear-gradient(135deg, rgba(8, 47, 73, 0.88) 0%, rgba(15, 23, 42, 0.92) 50%, rgba(13, 148, 136, 0.45) 100%) !important;
  border: 1px solid rgba(45, 212, 191, 0.2) !important;
  box-shadow: 0 25px 60px -15px rgba(0, 0, 0, 0.6), inset 0 1px 0 rgba(255, 255, 255, 0.1) !important;
}

/* Glass Header Navigation */
.glass-nav {
  background: rgba(255, 255, 255, 0.75) !important;
  backdrop-filter: blur(20px) saturate(180%) !important;
  -webkit-backdrop-filter: blur(20px) saturate(180%) !important;
  border-bottom: 1px solid rgba(255, 255, 255, 0.6) !important;
}

.dark .glass-nav {
  background: rgba(11, 19, 32, 0.75) !important;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08) !important;
}

/* Glass Buttons */
.glass-btn-primary {
  background: #ffffff !important;
  color: #0f766e !important;
  font-weight: 700 !important;
  border: 1px solid rgba(255, 255, 255, 0.9) !important;
  box-shadow: 0 10px 25px -4px rgba(13, 148, 136, 0.3) !important;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1) !important;
}

.glass-btn-primary:hover {
  background: #f0fdfa !important;
  transform: translateY(-2px) scale(1.02) !important;
  box-shadow: 0 16px 30px -4px rgba(13, 148, 136, 0.4) !important;
}

.glass-btn-accent {
  background: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%) !important;
  color: #0f172a !important;
  font-weight: 800 !important;
  border: 1px solid rgba(255, 255, 255, 0.3) !important;
  box-shadow: 0 10px 25px -4px rgba(245, 158, 11, 0.35) !important;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1) !important;
}

.glass-btn-accent:hover {
  background: linear-gradient(135deg, #fcd34d 0%, #fbbf24 100%) !important;
  transform: translateY(-2px) scale(1.02) !important;
  box-shadow: 0 16px 30px -4px rgba(245, 158, 11, 0.45) !important;
}

.glass-btn-subtle {
  background: rgba(255, 255, 255, 0.16) !important;
  backdrop-filter: blur(12px) !important;
  -webkit-backdrop-filter: blur(12px) !important;
  border: 1px solid rgba(255, 255, 255, 0.3) !important;
  color: #ffffff !important;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1) !important;
}

.glass-btn-subtle:hover {
  background: rgba(255, 255, 255, 0.28) !important;
  transform: translateY(-2px) !important;
}

/* Glass Badges & Tags */
.glass-badge {
  background: rgba(20, 184, 166, 0.12) !important;
  color: #0d9488 !important;
  border: 1px solid rgba(20, 184, 166, 0.25) !important;
  backdrop-filter: blur(8px) !important;
}

.dark .glass-badge {
  background: rgba(20, 184, 166, 0.18) !important;
  color: #2dd4bf !important;
  border: 1px solid rgba(45, 212, 191, 0.25) !important;
}

/* Soft Wave Texture overlay for Hero */
.glass-wave-mesh {
  background-image: radial-gradient(rgba(255, 255, 255, 0.18) 1px, transparent 1px);
  background-size: 24px 24px;
}