/* =============================================
   LIQUID GLASS DESIGN SYSTEM
   Frosted glass effects, animations, and atmosphere
   ============================================= */

/* =============================================
   BACKGROUND ATMOSPHERE
   ============================================= */

/* Animated Bokeh Background */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 20% 50%, var(--medical-pale-jade) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, var(--medical-ice-blue) 0%, transparent 50%),
    radial-gradient(circle at 40% 20%, var(--medical-mint) 0%, transparent 50%),
    radial-gradient(circle at 60% 70%, var(--medical-azure) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
  animation: bokehFloat var(--anim-bokeh) ease-in-out infinite;
}

/* Floating Particles Layer */
body::after {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    radial-gradient(2px 2px at 20% 30%, rgba(0, 168, 107, 0.15), transparent),
    radial-gradient(2px 2px at 60% 70%, rgba(78, 201, 168, 0.1), transparent),
    radial-gradient(1px 1px at 50% 50%, rgba(255, 255, 255, 0.2), transparent),
    radial-gradient(1px 1px at 80% 10%, rgba(135, 206, 250, 0.12), transparent),
    radial-gradient(2px 2px at 90% 40%, rgba(175, 238, 238, 0.1), transparent),
    radial-gradient(1px 1px at 33% 60%, rgba(152, 251, 152, 0.08), transparent);
  background-size: 200% 200%;
  pointer-events: none;
  z-index: 0;
  animation: particleMove var(--anim-float) ease-in-out infinite;
  opacity: 0.6;
}

/* =============================================
   KEYFRAME ANIMATIONS
   ============================================= */

@keyframes bokehFloat {
  0%, 100% {
    transform: translate(0, 0) scale(1);
    opacity: 1;
  }
  33% {
    transform: translate(30px, -20px) scale(1.1);
    opacity: 0.9;
  }
  66% {
    transform: translate(-20px, 30px) scale(0.95);
    opacity: 0.95;
  }
}

@keyframes particleMove {
  0% {
    background-position: 0% 0%;
  }
  50% {
    background-position: 100% 100%;
  }
  100% {
    background-position: 0% 0%;
  }
}

@keyframes shimmer {
  0% {
    left: -100%;
  }
  100% {
    left: 100%;
  }
}

@keyframes sparkle {
  0%, 100% {
    box-shadow: 0 4px 12px rgba(0,0,0,0.15), 0 0 0 rgba(0, 168, 107, 0);
  }
  50% {
    box-shadow: 0 4px 12px rgba(0,0,0,0.15), 0 0 20px rgba(0, 168, 107, 0.4);
  }
}

@keyframes blink {
  0%, 100% {
    opacity: 1;
    transform: translateY(-50%) scale(1);
  }
  50% {
    opacity: 0.3;
    transform: translateY(-50%) scale(0.8);
  }
}

@keyframes liquidRipple {
  0% {
    transform: scale(0.8) rotateY(-10deg);
    opacity: 0;
    filter: blur(10px);
  }
  50% {
    transform: scale(1.05) rotateY(2deg);
    filter: blur(2px);
  }
  100% {
    transform: scale(1) rotateY(0deg);
    opacity: 1;
    filter: blur(0);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.05);
  }
}

/* =============================================
   GLASS UTILITY CLASSES
   ============================================= */

.glass {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
}

.glass-light {
  background: var(--glass-bg-light);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border-light);
}

.glass-dark {
  background: var(--glass-bg-dark);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
}

/* =============================================
   ADVANCED LIQUID GLASS FEATURES
   ============================================= */

/* Nested Glass Layers for Depth */
.sidebar::after {
  content: '';
  position: absolute;
  top: -2px;
  left: -2px;
  right: -2px;
  bottom: -2px;
  background: linear-gradient(135deg, 
    var(--glass-layer-1) 0%, 
    var(--glass-layer-2) 50%, 
    var(--glass-layer-3) 100%);
  border-radius: 0;
  z-index: -1;
  opacity: 0;
  transition: opacity var(--transition-base);
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(5px);
  pointer-events: none;
}

.sidebar:hover::after {
  opacity: 0.3;
}

/* Enhanced Glass Cards */
.card::after,
.medicine-card::after,
.resident-card::after {
  content: '';
  position: absolute;
  top: -2px;
  left: -2px;
  right: -2px;
  bottom: -2px;
  background: linear-gradient(135deg, 
    var(--glass-layer-1) 0%, 
    var(--glass-layer-2) 50%, 
    var(--glass-layer-3) 100%);
  border-radius: var(--border-radius-lg);
  z-index: -1;
  opacity: 0;
  transition: opacity var(--transition-base);
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(5px);
  pointer-events: none;
}

.card:hover::after,
.medicine-card:hover::after,
.resident-card:hover::after {
  opacity: 1;
}

/* 3D Liquid Refraction Effect */
.card-body,
.medicine-card-body,
.resident-detail {
  transform-style: preserve-3d;
  perspective: 1000px;
}

input:focus,
select:focus,
textarea:focus {
  transform: translateZ(5px);
  transition: transform var(--transition-spring);
}

/* Liquid Ripple on Modal Open */
.modal-overlay.active .modal {
  animation: liquidRipple 0.8s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

/* Neomorphic Icons - Embossed on Glass */
.nav-icon,
.logo-icon {
  position: relative;
}

.nav-icon::before,
.logo-icon::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 100%;
  height: 100%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.3) 0%, transparent 70%);
  border-radius: 50%;
  opacity: 0;
  transition: opacity var(--transition-base);
  pointer-events: none;
}

.nav-item:hover .nav-icon::before,
.logo:hover .logo-icon::before {
  opacity: 1;
}

/* Soft Hover Glow for Interactive Elements */
input:hover,
select:hover,
textarea:hover {
  box-shadow: 
    0 0 20px rgba(0, 168, 107, 0.1),
    0 2px 8px rgba(0, 168, 107, 0.08),
    0 1px 0 rgba(255, 255, 255, 0.8) inset;
}

/* Enhanced Glass Capsule Buttons */
.btn,
.btn-primary,
.header-btn {
  position: relative;
  overflow: hidden;
}

.btn::before,
.btn-primary::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  transition: left 0.5s;
}

.btn:hover::before,
.btn-primary:hover::before {
  left: 100%;
}

/* Liquid Spreading Effect for Cards */
.card-header,
.medicine-card-header {
  position: relative;
  overflow: hidden;
}

.card-header::before,
.medicine-card-header::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, 
    transparent, 
    rgba(255, 255, 255, 0.3), 
    transparent);
  transition: left 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  pointer-events: none;
}

.card-header:hover::before,
.medicine-card-header:hover::before {
  left: 100%;
}

/* Glass Dividers */
.field-row:not(:last-child)::after,
.form-group:not(:last-child)::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, 
    transparent, 
    rgba(0, 0, 0, 0.05) 20%, 
    rgba(0, 0, 0, 0.05) 80%, 
    transparent);
  opacity: 0.3;
}

/* Ripple Effect Styles (added by JS) */
.ripple {
  position: absolute;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.6);
  transform: scale(0);
  animation: ripple-animation 0.6s ease-out;
  pointer-events: none;
  z-index: 1000;
}

@keyframes ripple-animation {
  to {
    transform: scale(4);
    opacity: 0;
  }
}

@keyframes liquidSpread {
  0% {
    background-position: -100% 0;
  }
  100% {
    background-position: 100% 0;
  }
}