/* ═══════════════════════════════════════════════════════════
   RIS - Rezept Index System
   Button Komponenten
   ═══════════════════════════════════════════════════════════ */

/* Base Button */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-xl);
  border-radius: var(--radius-md);
  font-size: var(--font-base);
  font-weight: var(--font-weight-semibold);
  transition: all var(--transition-base);
  cursor: pointer;
  border: 1px solid transparent;
  white-space: nowrap;
}

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

/* Primary Button (Grün) */
.btn-primary {
  background: var(--accent);
  color: #000;
  border-color: var(--accent);
}

.btn-primary:hover:not(:disabled) {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
  box-shadow: 0 0 20px var(--accent-glow);
}

.btn-primary:active:not(:disabled) {
  transform: scale(0.98);
}

/* Secondary Button (Border) */
.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border-color: var(--bg-border);
}

.btn-secondary:hover:not(:disabled) {
  background: var(--bg-elevated);
  border-color: var(--text-muted);
}

.btn-secondary:active:not(:disabled) {
  transform: scale(0.98);
}

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

.btn-ghost:hover:not(:disabled) {
  background: var(--bg-elevated);
  color: var(--text-primary);
}

/* Danger Button */
.btn-danger {
  background: var(--status-error);
  color: #fff;
  border-color: var(--status-error);
}

.btn-danger:hover:not(:disabled) {
  background: #dc2626;
  border-color: #dc2626;
}

/* Icon Button */
.btn-icon {
  padding: var(--space-md);
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--bg-border);
}

.btn-icon:hover:not(:disabled) {
  background: var(--bg-elevated);
  color: var(--text-primary);
  border-color: var(--text-muted);
}

/* Button Sizes */
.btn-sm {
  padding: var(--space-sm) var(--space-lg);
  font-size: var(--font-sm);
}

.btn-lg {
  padding: var(--space-lg) var(--space-2xl);
  font-size: var(--font-lg);
}

/* Button with Loading State */
.btn-loading {
  position: relative;
  color: transparent;
  pointer-events: none;
}

.btn-loading::after {
  content: '';
  position: absolute;
  width: 16px;
  height: 16px;
  border: 2px solid currentColor;
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
  color: var(--text-primary);
}

.btn-primary.btn-loading::after {
  color: #000;
}

/* Full Width Button */
.btn-block {
  width: 100%;
}

/* Button Group */
.btn-group {
  display: inline-flex;
  gap: var(--space-sm);
}

.btn-group .btn {
  flex: 1;
}

/* Spin Animation */
@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}