/* GravityJS - CSS Styling Utilities */

/* Base styles for gravity-enabled elements */
.gravity-element {
  position: relative;
  will-change: transform;
}

/* Element with different mass values */
[data-mass="0.5"],
.gravity-light {
  /* Light elements fall slower, bounce more */
}

[data-mass="2"],
.gravity-heavy {
  /* Heavy elements fall faster, bounce less */
}

/* Predefined elasticity classes */
.gravity-bouncy {
  --gravity-elasticity: 0.9;
}

.gravity-rubbery {
  --gravity-elasticity: 0.6;
}

.gravity-dull {
  --gravity-elasticity: 0.2;
}

.gravity-static {
  --gravity-fixed: true;
}

/* Spring animation presets */
.gravity-spring {
  --gravity-use-spring: true;
}

.gravity-spring-snappy {
  --gravity-spring-stiffness: 300;
  --gravity-spring-damping: 15;
}

.gravity-spring-gentle {
  --gravity-spring-stiffness: 80;
  --gravity-spring-damping: 8;
}

/* Ground element (visual reference) */
.gravity-ground {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(
    to right,
    transparent,
    rgba(0, 0, 0, 0.1) 20%,
    rgba(0, 0, 0, 0.3) 50%,
    rgba(0, 0, 0, 0.1) 80%,
    transparent
  );
  pointer-events: none;
  z-index: 9999;
}

/* Drop zone indicator */
.gravity-drop-zone {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 50px;
  background: linear-gradient(
    to top,
    rgba(255, 99, 97, 0.1),
    transparent
  );
  pointer-events: none;
  z-index: 9998;
}

/* Debug overlay */
.gravity-debug {
  position: fixed;
  top: 10px;
  left: 10px;
  background: rgba(0, 0, 0, 0.8);
  color: #ffa600;
  padding: 10px;
  font-family: monospace;
  font-size: 12px;
  border-radius: 4px;
  z-index: 10000;
  pointer-events: none;
}

.gravity-debug-item {
  margin: 2px 0;
}

/* Visual feedback for draggable elements */
.gravity-draggable {
  cursor: grab;
}

.gravity-draggable:active {
  cursor: grabbing;
}

/* Smooth transition when not using physics */
.gravity-smooth {
  transition: transform 0.3s ease-out;
}

/* Stagger animation delays for multiple elements */
.gravity-stagger-1 { animation-delay: 0.1s; }
.gravity-stagger-2 { animation-delay: 0.2s; }
.gravity-stagger-3 { animation-delay: 0.3s; }
.gravity-stagger-4 { animation-delay: 0.4s; }
.gravity-stagger-5 { animation-delay: 0.5s; }

/* Preset colors for demo elements */
.gravity-box {
  width: 80px;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-weight: 600;
  font-size: 14px;
  color: white;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1), 0 2px 4px rgba(0, 0, 0, 0.06);
}

.gravity-box-red { background: linear-gradient(135deg, #ff6361 0%, #ff8531 100%); }
.gravity-box-blue { background: linear-gradient(135deg, #003f5c 0%, #2c4875 100%); }
.gravity-box-green { background: linear-gradient(135deg, #00202e 0%, #003f5c 100%); }
.gravity-box-yellow { background: linear-gradient(135deg, #ffa600 0%, #ffd380 100%); }
.gravity-box-purple { background: linear-gradient(135deg, #8a508f 0%, #bc5090 100%); }

/* Circle variants */
.gravity-circle {
  border-radius: 50%;
}

/* Card style */
.gravity-card {
  width: 150px;
  padding: 16px;
  background: white;
  border-radius: 12px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1), 0 2px 4px rgba(0, 0, 0, 0.06);
  color: #333;
  font-weight: 400;
  text-shadow: none;
}

/* Button style */
.gravity-button {
  padding: 12px 24px;
  background: #ff6361;
  border: none;
  border-radius: 8px;
  color: white;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 4px 6px rgba(255, 99, 97, 0.3);
}

.gravity-button:hover {
  background: #ff8531;
}

.gravity-button:active {
  transform: scale(0.95);
}

/* Mobile responsive */
@media (max-width: 768px) {
  .gravity-box {
    width: 60px;
    height: 60px;
    font-size: 12px;
  }

  .gravity-card {
    width: 120px;
    padding: 12px;
  }
}