/* ==========================================================================
   Emil Kowalski Micro-Interactions & Web Animations Engine
   Physics-Based Spring Transitions, Sonner Stacking Toasts & Vaul Modals
   ========================================================================== */

/* 1. Spring Physics Variables & Curves */
:root {
  --spring-ease: cubic-bezier(0.32, 0.72, 0, 1);
  --spring-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);
  --spring-haptic: cubic-bezier(0.16, 1, 0.3, 1);
  --toast-width: 380px;
  --toast-gap: 12px;
}

/* 2. Tactile Spring Press Physics on Interactive Elements */
.btn, 
.app-nav-btn, 
.copy-fmt-btn, 
.skill-check-chip, 
.agent-cat-btn,
.metrics-range-btn {
  will-change: transform, box-shadow;
  transition: transform 0.25s var(--spring-bounce), 
              background-color 0.2s ease, 
              border-color 0.2s ease, 
              box-shadow 0.25s ease !important;
}

.btn:active, 
.app-nav-btn:active, 
.copy-fmt-btn:active, 
.skill-check-chip:active, 
.agent-cat-btn:active,
.metrics-range-btn:active {
  transform: scale(0.95) !important;
  transition: transform 0.08s var(--spring-haptic) !important;
}

/* 3. Vaul-Style Modal Physics & Smooth Backdrop */
.modal-overlay {
  transition: opacity 0.4s var(--spring-ease), backdrop-filter 0.4s ease !important;
  backdrop-filter: blur(0px);
}

.modal-overlay.active {
  backdrop-filter: blur(14px) !important;
}

.modal-content {
  will-change: transform, opacity, filter;
  transform: scale(0.93) translateY(24px) !important;
  opacity: 0;
  filter: blur(6px);
  transition: transform 0.45s var(--spring-ease), 
              opacity 0.35s ease, 
              filter 0.35s ease !important;
}

.modal-overlay.active .modal-content {
  transform: scale(1) translateY(0) !important;
  opacity: 1 !important;
  filter: blur(0px) !important;
}

/* Vaul Drag Handle indicator for drawer / modal feel */
.vaul-drag-handle {
  width: 44px;
  height: 4px;
  background: rgba(255, 255, 255, 0.18);
  border-radius: 999px;
  margin: 0 auto 16px auto;
  cursor: grab;
  transition: background 0.2s ease, transform 0.2s ease;
}

.vaul-drag-handle:hover {
  background: var(--cyan);
  transform: scaleX(1.2);
}

/* 4. Fluid Section & Tab Transition (Layout Animations) */
.app-module-section {
  animation: emilFluidEnter 0.38s var(--spring-haptic) forwards;
  will-change: transform, opacity;
}

@keyframes emilFluidEnter {
  from {
    opacity: 0;
    transform: translateY(12px) scale(0.995);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* 5. Sonner Stacking Toaster System */
[data-sonner-toaster] {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: var(--toast-width);
  max-width: calc(100vw - 32px);
  z-index: 9999999;
  list-style: none;
  margin: 0;
  padding: 0;
  pointer-events: none;
  outline: none;
  display: flex;
  flex-direction: column;
}

/* Base Sonner Toast Element */
.sonner-toast {
  --y: 0px;
  --scale: 1;
  position: absolute;
  right: 0;
  bottom: 0;
  width: 100%;
  padding: 14px 18px;
  background: rgba(13, 20, 32, 0.95);
  backdrop-filter: blur(18px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  box-shadow: 0 12px 35px -5px rgba(0, 0, 0, 0.8), 0 0 1px 1px rgba(255, 255, 255, 0.08);
  color: #fff;
  font-family: var(--font-sans);
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  gap: 12px;
  pointer-events: auto;
  cursor: grab;
  user-select: none;
  touch-action: none;
  will-change: transform, opacity, height;
  transition: transform 0.4s var(--spring-ease), 
              opacity 0.35s ease, 
              box-shadow 0.25s ease;
  transform: translateY(var(--y)) scale(var(--scale));
  opacity: 1;
}

.sonner-toast:active {
  cursor: grabbing;
}

/* Stacking Physics: Depth, Offset & Scale */
/* Item at index 0 (Front) */
.sonner-toast[data-index="0"] {
  --y: 0px;
  --scale: 1;
  z-index: 100;
  opacity: 1;
}

/* Item at index 1 (Peek 1) */
.sonner-toast[data-index="1"] {
  --y: -12px;
  --scale: 0.94;
  z-index: 99;
  opacity: 0.92;
}

/* Item at index 2 (Peek 2) */
.sonner-toast[data-index="2"] {
  --y: -24px;
  --scale: 0.88;
  z-index: 98;
  opacity: 0.78;
}

/* Items beyond index 2 (Hidden in deck) */
.sonner-toast[data-index="3"],
.sonner-toast[data-index="4"] {
  --y: -36px;
  --scale: 0.82;
  z-index: 97;
  opacity: 0;
  pointer-events: none;
}

/* Expanded State on Hover (Unstack into vertical list with spring physics) */
[data-sonner-toaster][data-expanded="true"] .sonner-toast {
  --scale: 1 !important;
  opacity: 1 !important;
  transform: translateY(calc(var(--expanded-offset, 0px) * -1)) scale(1) !important;
}

/* Toast Variants */
.sonner-toast[data-type="success"] {
  border-color: rgba(16, 185, 129, 0.4);
  box-shadow: 0 12px 35px -5px rgba(0, 0, 0, 0.8), 0 0 25px -4px rgba(16, 185, 129, 0.3);
}

.sonner-toast[data-type="success"] .toast-badge {
  color: var(--emerald);
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.sonner-toast[data-type="error"] {
  border-color: rgba(244, 63, 94, 0.4);
  box-shadow: 0 12px 35px -5px rgba(0, 0, 0, 0.8), 0 0 25px -4px rgba(244, 63, 94, 0.3);
}

.sonner-toast[data-type="error"] .toast-badge {
  color: var(--rose);
  background: rgba(244, 63, 94, 0.15);
  border: 1px solid rgba(244, 63, 94, 0.3);
}

.sonner-toast[data-type="info"] {
  border-color: rgba(0, 243, 255, 0.4);
  box-shadow: 0 12px 35px -5px rgba(0, 0, 0, 0.8), 0 0 25px -4px var(--cyan-glow);
}

.sonner-toast[data-type="info"] .toast-badge {
  color: var(--cyan);
  background: var(--cyan-dim);
  border: 1px solid rgba(0, 243, 255, 0.3);
}

.toast-badge {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  font-weight: 700;
  flex-shrink: 0;
}

.toast-text-wrap {
  flex: 1;
  min-width: 0;
  line-height: 1.45;
}

.toast-title {
  font-weight: 600;
  color: #fff;
  font-size: 0.85rem;
}

.toast-desc {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.toast-close-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px 6px;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  transition: color 0.15s, background 0.15s;
  opacity: 0.6;
}

.sonner-toast:hover .toast-close-btn {
  opacity: 1;
}

.toast-close-btn:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.1);
}

/* Entrance & Exit Animations */
.sonner-toast[data-state="entering"] {
  transform: translateY(100px) scale(0.9);
  opacity: 0;
}

.sonner-toast[data-state="exiting"] {
  transform: translateY(40px) scale(0.85);
  opacity: 0;
  pointer-events: none;
}

/* 6. Card Magnetic Glow / Cursor Follower */
.glass-panel, .local-guide-card {
  position: relative;
  overflow: hidden;
}

.glass-panel::before, .local-guide-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: radial-gradient(
    480px circle at var(--mouse-x, -999px) var(--mouse-y, -999px),
    rgba(0, 243, 255, 0.08),
    transparent 70%
  );
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s ease;
  z-index: 1;
}

.glass-panel:hover::before, .local-guide-card:hover::before {
  opacity: 1;
}

/* 7. Copy Success Keyframe Bounce */
@keyframes emilCopySpring {
  0% { transform: scale(1); }
  35% { transform: scale(0.86); }
  65% { transform: scale(1.18); }
  100% { transform: scale(1); }
}

.emil-spring-bounce {
  animation: emilCopySpring 0.4s var(--spring-bounce);
}