/* ===================================================================
   Button Components
   Reusable button styles for the entire application
   =================================================================== */

/* ===== BASE BUTTON ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--btn-padding-y) var(--btn-padding-x);
  border: 2px solid transparent;
  border-radius: var(--btn-border-radius);
  font-family: var(--font-primary);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  line-height: 1;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
  user-select: none;
  transition: all var(--transition-normal);
  min-height: var(--btn-height);
  white-space: nowrap;
}

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

.btn:disabled,
.btn.disabled {
  pointer-events: none;
  opacity: 0.6;
  cursor: not-allowed;
}

/* ===== BUTTON SIZES ===== */
.btn-sm {
  padding: var(--space-sm) var(--space-md);
  font-size: var(--font-size-sm);
  min-height: 36px;
  border-radius: var(--radius-lg);
}

.btn-lg {
  padding: var(--space-md) var(--space-xl);
  font-size: var(--font-size-lg);
  min-height: 56px;
  border-radius: var(--radius-2xl);
}

.btn-xl {
  padding: var(--space-lg) var(--space-2xl);
  font-size: var(--font-size-xl);
  min-height: 64px;
  border-radius: var(--radius-2xl);
}

/* ===== BUTTON VARIANTS ===== */

/* Primary Button */
.btn-primary {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: white;
  border-color: var(--primary-color);
  box-shadow: var(--shadow-primary);
}

.btn-primary:hover,
.btn-primary:focus {
  background: var(--secondary-color);
  border-color: var(--secondary-color);
  box-shadow: var(--shadow-primary-lg);
  transform: translateY(-2px);
  color: white;
  text-decoration: none;
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: var(--shadow-primary);
}

/* Secondary Button */
.btn-secondary {
  background: white;
  color: var(--primary-color);
  border-color: var(--primary-color);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover,
.btn-secondary:focus {
  background: var(--primary-color);
  color: white;
  transform: translateY(-2px);
  box-shadow: var(--shadow-primary);
  text-decoration: none;
}

.btn-secondary:active {
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}

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

.btn-outline:hover,
.btn-outline:focus {
  background: var(--primary-color);
  color: white;
  text-decoration: none;
}

/* Ghost Button */
.btn-ghost {
  background: transparent;
  color: var(--primary-color);
  border-color: transparent;
}

.btn-ghost:hover,
.btn-ghost:focus {
  background: var(--accent-color);
  color: var(--primary-color);
  text-decoration: none;
}

/* Success Button */
.btn-success {
  background: var(--success-color);
  color: white;
  border-color: var(--success-color);
}

.btn-success:hover,
.btn-success:focus {
  background: #218838;
  border-color: #218838;
  color: white;
  text-decoration: none;
}

/* Danger Button */
.btn-danger {
  background: var(--danger-color);
  color: white;
  border-color: var(--danger-color);
}

.btn-danger:hover,
.btn-danger:focus {
  background: #c82333;
  border-color: #c82333;
  color: white;
  text-decoration: none;
}

/* Warning Button */
.btn-warning {
  background: var(--warning-color);
  color: var(--text-color);
  border-color: var(--warning-color);
}

.btn-warning:hover,
.btn-warning:focus {
  background: #e0a800;
  border-color: #e0a800;
  color: var(--text-color);
  text-decoration: none;
}

/* Light Button */
.btn-light {
  background: var(--bg-light);
  color: var(--text-color);
  border-color: var(--border-color);
}

.btn-light:hover,
.btn-light:focus {
  background: var(--bg-gray);
  border-color: var(--border-dark);
  color: var(--text-color);
  text-decoration: none;
}

/* Dark Button */
.btn-dark {
  background: var(--bg-dark);
  color: white;
  border-color: var(--bg-dark);
}

.btn-dark:hover,
.btn-dark:focus {
  background: #1a252f;
  border-color: #1a252f;
  color: white;
  text-decoration: none;
}

/* ===== BUTTON WIDTHS ===== */
.btn-block {
  width: 100%;
}

.btn-auto {
  width: auto;
}

/* ===== ICON BUTTONS ===== */
.btn-icon {
  padding: var(--space-sm);
  min-width: var(--btn-height);
  width: var(--btn-height);
  height: var(--btn-height);
  border-radius: var(--radius-lg);
}

.btn-icon-sm {
  padding: var(--space-xs);
  min-width: 32px;
  width: 32px;
  height: 32px;
  border-radius: var(--radius-md);
}

.btn-icon-lg {
  padding: var(--space-md);
  min-width: 56px;
  width: 56px;
  height: 56px;
  border-radius: var(--radius-xl);
}

/* ===== BUTTON GROUPS ===== */
.btn-group {
  display: flex;
  gap: var(--space-sm);
}

.btn-group.btn-group-connected {
  gap: 0;
}

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

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

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

.btn-group-connected .btn:not(:last-child) {
  border-right: none;
}

/* ===== LOADING STATE ===== */
.btn-loading {
  pointer-events: none;
  position: relative;
}

.btn-loading .btn-text {
  opacity: 0.7;
}

.btn-loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 16px;
  height: 16px;
  background: currentColor;
  border-radius: 50%;
  opacity: 0.6;
}

/* No spinning animation to avoid annoying users */

/* ===== SPECIALIZED BUTTONS ===== */

/* CTA (Call to Action) Button */
.btn-cta {
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  color: white;
  border: none;
  padding: var(--space-md) var(--space-xl);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}

.btn-cta::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;
}

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

.btn-cta:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-2xl);
}

/* Social Button */
.btn-social {
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--radius-lg);
}

.btn-google {
  background: white;
  color: #333;
  border-color: var(--border-color);
}

.btn-google:hover {
  background: var(--bg-light);
  color: #333;
}

.btn-facebook {
  background: #1877f2;
  color: white;
  border-color: #1877f2;
}

.btn-facebook:hover {
  background: #166fe5;
  color: white;
}

/* Newsletter Button */
.btn-newsletter {
  background: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
  min-width: 120px;
}

.btn-newsletter:hover {
  background: var(--secondary-color);
  color: white;
  transform: translateY(-1px);
}

/* ===== RESPONSIVE BUTTON STYLES ===== */
@media (max-width: 768px) {
  .btn {
    font-size: var(--font-size-sm);
    padding: var(--space-sm) var(--space-md);
  }
  
  .btn-lg {
    font-size: var(--font-size-base);
    padding: var(--space-md) var(--space-lg);
  }
  
  .btn-group {
    flex-direction: column;
  }
  
  .btn-group-connected {
    flex-direction: column;
  }
  
  .btn-group-connected .btn {
    border-radius: 0;
  }
  
  .btn-group-connected .btn:first-child {
    border-top-left-radius: var(--btn-border-radius);
    border-top-right-radius: var(--btn-border-radius);
    border-bottom-left-radius: 0;
  }
  
  .btn-group-connected .btn:last-child {
    border-bottom-left-radius: var(--btn-border-radius);
    border-bottom-right-radius: var(--btn-border-radius);
    border-top-right-radius: 0;
  }
  
  .btn-group-connected .btn:not(:last-child) {
    border-right: 2px solid transparent;
    border-bottom: none;
  }
}