/* Digital Magnifying Glass PWA - Control Styles */

/* Button Base Styles */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  font-family: var(--font-family-primary);
  font-size: var(--font-size-sm);
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  transition: var(--transition);
  min-height: var(--control-height);
  position: relative;
  overflow: hidden;
  user-select: none;
  -webkit-user-select: none;
}

.btn:focus {
  outline: 2px solid var(--primary-blue);
  outline-offset: 2px;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

/* Button Variants */
.btn-primary {
  background: var(--primary-blue);
  color: white;
  border-color: var(--primary-blue);
}

.btn-primary:hover {
  background: #0052a3;
  border-color: #0052a3;
}

.btn-secondary {
  background: var(--surface-bg);
  color: var(--primary-text);
  border-color: var(--border-color);
}

.btn-secondary:hover {
  background: var(--accent-bg);
  border-color: var(--primary-blue);
}

/* Control Button Specific Styles */
.control-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-width: 3rem;
  padding: var(--spacing-sm);
  background: var(--surface-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  transition: var(--transition);
  cursor: pointer;
  position: relative;
}

.control-btn:hover {
  background: var(--accent-bg);
  transform: translateY(-1px);
  box-shadow: 0 2px 8px var(--shadow-color);
}

.control-btn:active {
  transform: translateY(0);
  box-shadow: 0 1px 4px var(--shadow-color);
}

.control-btn.active {
  background: var(--primary-blue);
  border-color: var(--primary-blue);
  color: white;
  box-shadow: 0 0 12px rgba(0, 102, 204, 0.3);
}

/* Icon Styles */
.btn-icon {
  width: 1.25rem;
  height: 1.25rem;
  fill: currentColor;
  flex-shrink: 0;
}

.btn-text {
  font-size: var(--font-size-xs);
  font-weight: 500;
  line-height: 1;
}

/* Zoom Button Styles */
.zoom-btn {
  min-width: 2.5rem;
  height: 2.5rem;
  border-radius: 50%;
  padding: 0;
}

.zoom-btn .btn-icon {
  width: 1.5rem;
  height: 1.5rem;
}

.zoom-btn:active {
  transform: scale(0.95);
}

/* Flashlight Button Styles */
.flashlight-btn {
  position: relative;
}

.flashlight-btn.active::after {
  content: '';
  position: absolute;
  top: -2px;
  left: -2px;
  right: -2px;
  bottom: -2px;
  background: var(--warning-orange);
  border-radius: calc(var(--border-radius) + 2px);
  z-index: -1;
  animation: flashlight-pulse 2s ease-in-out infinite;
}

@keyframes flashlight-pulse {
  0%, 100% {
    opacity: 0.3;
    transform: scale(1);
  }
  50% {
    opacity: 0.6;
    transform: scale(1.05);
  }
}

/* Freeze Button Styles */
.freeze-btn.active {
  animation: freeze-glow 1.5s ease-in-out infinite;
}

@keyframes freeze-glow {
  0%, 100% {
    box-shadow: 0 0 8px rgba(0, 204, 102, 0.3);
  }
  50% {
    box-shadow: 0 0 16px rgba(0, 204, 102, 0.6);
  }
}


/* Settings Button Styles */
.settings-btn {
  position: relative;
}

.settings-btn::before {
  content: '';
  position: absolute;
  top: 2px;
  right: 2px;
  width: 8px;
  height: 8px;
  background: var(--error-red);
  border-radius: 50%;
  display: none;
}

.settings-btn.has-updates::before {
  display: block;
}

/* Slider Controls */
.zoom-slider {
   -webkit-appearance: none;
   appearance: none;
   background: var(--border-color);
   height: 4px;
   border-radius: 2px;
   cursor: pointer;
 }

.zoom-slider::-webkit-slider-thumb {
   -webkit-appearance: none;
   appearance: none;
   width: 16px;
   height: 16px;
   background: var(--primary-blue);
   border-radius: 50%;
   cursor: pointer;
   transition: var(--transition);
   box-shadow: 0 0 4px var(--shadow-color);
 }

.zoom-slider::-webkit-slider-thumb:hover {
   transform: scale(1.2);
   box-shadow: 0 0 8px rgba(0, 102, 204, 0.5);
 }

.zoom-slider::-moz-range-thumb {
   width: 16px;
   height: 16px;
   background: var(--primary-blue);
   border-radius: 50%;
   cursor: pointer;
   border: none;
   box-shadow: 0 0 4px var(--shadow-color);
 }

/* Select Dropdown Styles */
.filter-select {
  background: var(--surface-bg);
  color: var(--primary-text);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: var(--font-size-sm);
  cursor: pointer;
  transition: var(--transition);
}

.filter-select:hover {
  border-color: var(--primary-blue);
}

.filter-select:focus {
  outline: 2px solid var(--primary-blue);
  outline-offset: 2px;
  border-color: var(--primary-blue);
}

/* Touch Target Enhancements */
@media (hover: none) and (pointer: coarse) {
  .control-btn {
    min-width: 3.5rem;
    min-height: 3.5rem;
    padding: var(--spacing-md);
  }

  .btn-text {
    font-size: var(--font-size-xs);
  }

  .btn-icon {
    width: 1.5rem;
    height: 1.5rem;
  }

  .zoom-btn {
    min-width: 3rem;
    height: 3rem;
  }

  .zoom-slider {
    width: 150px;
  }
}

/* High Contrast Mode Adjustments */
.high-contrast .control-btn {
  border-width: 2px;
}

.high-contrast .btn-icon {
  filter: contrast(1.5);
}

/* Focus Indicators */
.control-btn:focus-visible {
  outline: 3px solid var(--primary-blue);
  outline-offset: 2px;
}

/* Loading States */
.control-btn.loading {
  pointer-events: none;
  opacity: 0.7;
}

.control-btn.loading .btn-icon {
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* Gesture Feedback */
.control-btn.gesture-active {
  transform: scale(0.95);
  transition: transform 0.1s ease-out;
}

/* Error States */
.control-btn.error {
  background: var(--error-red);
  border-color: var(--error-red);
  color: white;
  animation: shake 0.5s ease-in-out;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-5px); }
  75% { transform: translateX(5px); }
}

/* Success States */
.control-btn.success {
  background: var(--success-green);
  border-color: var(--success-green);
  color: white;
  animation: success-pulse 0.6s ease-out;
}

@keyframes success-pulse {
  0% {
    transform: scale(1);
    box-shadow: 0 0 0 0 rgba(0, 204, 102, 0.4);
  }
  70% {
    transform: scale(1.05);
    box-shadow: 0 0 0 8px rgba(0, 204, 102, 0);
  }
  100% {
    transform: scale(1);
    box-shadow: 0 0 0 0 rgba(0, 204, 102, 0);
  }
}