/* ===================================
   MODULAR BUTTON SYSTEM
   =================================== */

/* Base Button Class */
.btn {
  /* Layout & Typography */
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-family: var(--font-family-mono);
  font-size: 0.875rem;
  font-weight: 600;
  line-height: 1.4;
  text-decoration: none;
  text-align: center;
  white-space: nowrap;
  vertical-align: middle;
  cursor: pointer;
  
  /* Visual Styling */
  border: 2px solid transparent;
  border-radius: var(--border-radius-md);
  background: var(--color-bg-primary);
  color: var(--color-text-primary);
  
  /* Transitions & Effects */
  transition: all 0.2s ease-in-out;
  transform: translateY(0);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  
  /* Accessibility */
  user-select: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
}

/* Button Icon */
.btn__icon {
  font-size: 1em;
  line-height: 1;
  flex-shrink: 0;
}

/* Button States */
.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.btn:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.btn:active {
  transform: translateY(0);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.btn:disabled,
.btn[disabled] {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

/* Size Variants */
.btn--sm {
  padding: 0.5rem 1rem;
  font-size: 0.75rem;
}

.btn--large {
  padding: 1rem 2rem;
  font-size: 1rem;
}

/* Glow Effect Variant */
.btn--glow {
  position: relative;
  overflow: hidden;
  background: linear-gradient(45deg, var(--color-primary), var(--color-accent));
  border-color: var(--color-accent);
  box-shadow: 
    0 0 10px rgba(var(--color-accent-rgb), 0.3),
    0 0 20px rgba(var(--color-accent-rgb), 0.2),
    0 0 30px rgba(var(--color-accent-rgb), 0.1);
}

.btn--glow::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s ease-in-out;
}

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

.btn--glow:hover {
  box-shadow: 
    0 0 15px rgba(var(--color-accent-rgb), 0.4),
    0 0 25px rgba(var(--color-accent-rgb), 0.3),
    0 0 35px rgba(var(--color-accent-rgb), 0.2);
}

/* Color Variants */
.btn.btn--primary {
  background: var(--color-bg-primary) !important;
  border-color: var(--color-primary) !important;
  color: var(--color-primary) !important;
  box-shadow: 
    0 0 10px rgba(var(--color-primary-rgb), 0.3),
    0 0 20px rgba(var(--color-primary-rgb), 0.2);
}

.btn.btn--primary:hover {
  background: var(--color-bg-primary) !important;
  border-color: var(--color-primary) !important;
  color: var(--color-primary) !important;
  box-shadow: 
    0 0 15px rgba(var(--color-primary-rgb), 0.4),
    0 0 25px rgba(var(--color-primary-rgb), 0.3),
    0 0 35px rgba(var(--color-primary-rgb), 0.2);
}

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

.btn.btn--secondary:hover {
  background: var(--color-secondary-dark) !important;
  border-color: var(--color-secondary-dark) !important;
}

.btn.btn--tertiary {
  background: var(--color-tertiary) !important;
  border-color: var(--color-tertiary) !important;
  color: var(--color-text-primary) !important;
}

.btn.btn--tertiary:hover {
  background: var(--color-tertiary-dark) !important;
  border-color: var(--color-tertiary-dark) !important;
}

/* Cyberpunk Color Variants */
.btn.btn--cyber-cyan {
  background: var(--color-cyber-cyan) !important;
  border-color: var(--color-cyber-cyan) !important;
  color: var(--color-bg-primary) !important;
  box-shadow: 
    0 0 10px rgba(var(--color-cyber-cyan-rgb), 0.3),
    0 0 20px rgba(var(--color-cyber-cyan-rgb), 0.2);
}

.btn.btn--cyber-cyan:hover {
  background: var(--color-cyber-cyan-light) !important;
  border-color: var(--color-cyber-cyan-light) !important;
  color: var(--color-bg-primary) !important;
  box-shadow: 
    0 0 15px rgba(var(--color-cyber-cyan-rgb), 0.4),
    0 0 25px rgba(var(--color-cyber-cyan-rgb), 0.3),
    0 0 35px rgba(var(--color-cyber-cyan-rgb), 0.2);
}

.btn.btn--cyber-cyan:focus-visible {
  background: var(--color-cyber-cyan-light) !important;
  border-color: var(--color-cyber-cyan-light) !important;
  color: var(--color-bg-primary) !important;
}

.btn.btn--cyber-green {
  background: var(--color-cyber-green) !important;
  border-color: var(--color-cyber-green) !important;
  color: var(--color-bg-primary) !important;
  box-shadow: 
    0 0 10px rgba(var(--color-cyber-green-rgb), 0.3),
    0 0 20px rgba(var(--color-cyber-green-rgb), 0.2);
}

.btn.btn--cyber-green:hover {
  background: var(--color-cyber-green-light) !important;
  border-color: var(--color-cyber-green-light) !important;
  color: var(--color-bg-primary) !important;
  box-shadow: 
    0 0 15px rgba(var(--color-cyber-green-rgb), 0.4),
    0 0 25px rgba(var(--color-cyber-green-rgb), 0.3),
    0 0 35px rgba(var(--color-cyber-green-rgb), 0.2);
}

.btn.btn--cyber-green:focus-visible {
  background: var(--color-cyber-green-light) !important;
  border-color: var(--color-cyber-green-light) !important;
  color: var(--color-bg-primary) !important;
}

.btn.btn--warning-orange {
  background: var(--color-warning-orange) !important;
  border-color: var(--color-warning-orange) !important;
  color: var(--color-bg-primary) !important;
  box-shadow: 
    0 0 10px rgba(var(--color-warning-orange-rgb), 0.3),
    0 0 20px rgba(var(--color-warning-orange-rgb), 0.2);
}

.btn.btn--warning-orange:hover {
  background: var(--color-warning-orange-light) !important;
  border-color: var(--color-warning-orange-light) !important;
  color: var(--color-bg-primary) !important;
  box-shadow: 
    0 0 15px rgba(var(--color-warning-orange-rgb), 0.4),
    0 0 25px rgba(var(--color-warning-orange-rgb), 0.3),
    0 0 35px rgba(var(--color-warning-orange-rgb), 0.2);
}

.btn.btn--warning-orange:focus-visible {
  background: var(--color-warning-orange-light) !important;
  border-color: var(--color-warning-orange-light) !important;
  color: var(--color-bg-primary) !important;
}

/* Outline Variants */
.btn.btn--outline {
  background: transparent !important;
  color: var(--color-primary) !important;
  border-color: var(--color-primary) !important;
}

.btn.btn--outline:hover {
  background: var(--color-primary) !important;
  color: var(--color-text-primary) !important;
}

.btn.btn--outline.btn--cyber-cyan {
  color: var(--color-cyber-cyan) !important;
  border-color: var(--color-cyber-cyan) !important;
}

.btn.btn--outline.btn--cyber-cyan:hover {
  background: var(--color-cyber-cyan) !important;
  color: var(--color-bg-primary) !important;
}

.btn.btn--outline.btn--cyber-green {
  color: var(--color-cyber-green) !important;
  border-color: var(--color-cyber-green) !important;
}

.btn.btn--outline.btn--cyber-green:hover {
  background: var(--color-cyber-green) !important;
  color: var(--color-bg-primary) !important;
}

.btn.btn--outline.btn--warning-orange {
  color: var(--color-warning-orange) !important;
  border-color: var(--color-warning-orange) !important;
}

.btn.btn--outline.btn--warning-orange:hover {
  background: var(--color-warning-orange) !important;
  color: var(--color-bg-primary) !important;
}

/* Button Groups */
.btn-group {
  display: inline-flex;
  gap: 0.25rem;
}

.btn-group .btn {
  border-radius: 0;
}

.btn-group .btn:first-child {
  border-top-left-radius: var(--border-radius-md);
  border-bottom-left-radius: var(--border-radius-md);
}

.btn-group .btn:last-child {
  border-top-right-radius: var(--border-radius-md);
  border-bottom-right-radius: var(--border-radius-md);
}

/* Responsive Behavior */
@media (max-width: 768px) {
  .btn--large {
    padding: 0.875rem 1.75rem;
    font-size: 0.9375rem;
  }
  
  .btn--sm {
    padding: 0.4375rem 0.875rem;
    font-size: 0.6875rem;
  }
}

@media (max-width: 480px) {
  .btn-group {
    flex-direction: column;
    width: 100%;
  }
  
  .btn-group .btn {
    border-radius: var(--border-radius-md);
  }
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
  .btn {
    border-width: 3px;
  }
  
  .btn:focus-visible {
    outline-width: 3px;
  }
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
  .btn {
    transition: none;
  }
  
  .btn:hover,
  .btn:focus-visible,
  .btn:active {
    transform: none;
  }
  
  .btn--glow::before {
    transition: none;
  }
}

/* Print Styles */
@media print {
  .btn {
    background: none !important;
    border: 1px solid var(--color-text-primary) !important;
    color: var(--color-text-primary) !important;
    box-shadow: none !important;
    transform: none !important;
  }
  
  .btn__icon {
    display: none;
  }
}

/* ===== SUCCESS AND ERROR STATES ===== */

.btn.btn--success {
  background: var(--color-success) !important;
  border-color: var(--color-success) !important;
  color: var(--color-text-inverse) !important;
  box-shadow: 0 0 20px rgba(0, 255, 0, 0.3);
}

.btn.btn--error {
  background: var(--color-error) !important;
  border-color: var(--color-error) !important;
  color: var(--color-text-inverse) !important;
  box-shadow: 0 0 20px rgba(255, 0, 0, 0.3);
}

/* ===== COPY BUTTON SPECIFIC STYLES ===== */

.btn[data-email]:not([data-template]) {
  position: relative;
  transition: all var(--duration-fast) var(--ease-cyber-out);
}

.btn[data-email]:not([data-template]):hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 206, 209, 0.4);
}

.btn[data-email]:not([data-template]):active {
  transform: translateY(0);
  box-shadow: 0 2px 6px rgba(0, 206, 209, 0.3);
}