/* ===== Button Component ===== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-sm) var(--spacing-lg);
  font-family: var(--font-primary);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  line-height: 1.5;
  text-align: center;
  text-decoration: none;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  white-space: nowrap;
  position: relative;
  z-index: 10;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}

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

/* Focus States für Accessibility */
.btn:focus-visible {
  outline: 3px solid var(--color-primary);
  outline-offset: 2px;
}

/* ===== Button Variants ===== */

/* Primary Button */
.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-text-light);
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  color: var(--color-text-light);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.btn-primary:active {
  background-color: var(--color-primary-dark);
  color: var(--color-text-light);
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}

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

.btn-secondary:hover {
  background-color: var(--color-secondary-dark);
  color: var(--color-text-light);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.btn-secondary:active {
  background-color: var(--color-secondary-dark);
  color: var(--color-text-light);
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}

/* Outline Button */
.btn-outline {
  background-color: transparent;
  color: var(--color-primary-light);
  border: 2px solid var(--color-primary);
}

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

.btn-outline:active {
  background-color: var(--color-primary-dark);
  color: var(--color-text-light);
  border-color: var(--color-primary-dark);
}

.btn-outline-secondary {
  background-color: transparent;
  color: var(--color-secondary);
  border: 2px solid var(--color-secondary);
}

.btn-outline-secondary:hover {
  background-color: var(--color-secondary);
  color: var(--color-text-light);
  border-color: var(--color-secondary);
}

.btn-outline-secondary:active {
  background-color: var(--color-secondary-dark);
  color: var(--color-text-light);
  border-color: var(--color-secondary-dark);
}

/* Ghost Button */
.btn-ghost {
  background-color: transparent;
  color: var(--color-primary);
  box-shadow: none;
}

.btn-ghost:hover {
  background-color: rgba(var(--color-primary-rgb), 0.15);
  color: var(--color-primary-light);
}

.btn-ghost:active {
  background-color: rgba(var(--color-primary-rgb), 0.25);
  color: var(--color-primary-light);
}

/* White Button */
.btn-white {
  background-color: transparent;
  color: #ffffff;
  border: 2px solid #ffffff;
  box-shadow: none;
}

.btn-white:hover {
  background-color: #ffffff;
  color: var(--color-text-dark);
  border-color: #ffffff;
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.btn-white:active {
  background-color: #f5f5f5;
  color: var(--color-text-dark);
  border-color: #f5f5f5;
  transform: translateY(0);
  box-shadow: var(--shadow-md);
}

/* Dark Background Buttons */
.btn-light {
  background-color: var(--color-bg-elevated-3);
  color: var(--color-text-light);
  border: 2px solid var(--color-border-medium);
  box-shadow: var(--shadow-sm);
}

.btn-light:hover {
  background-color: var(--color-bg-elevated-2);
  color: var(--color-text-light);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.btn-light:active {
  background-color: var(--color-bg-elevated);
  color: var(--color-text-light);
  border-color: var(--color-primary);
  transform: translateY(0);
}

.btn-dark {
  background-color: var(--color-bg-elevated);
  color: var(--color-text-light);
  border: 2px solid var(--color-border-medium);
  box-shadow: var(--shadow-sm);
}

.btn-dark:hover {
  background-color: var(--color-bg-elevated-2);
  color: var(--color-text-light);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.btn-dark:active {
  background-color: var(--color-bg-elevated-3);
  color: var(--color-text-light);
  border-color: var(--color-primary);
  transform: translateY(0);
}

/* ===== Button Sizes ===== */

.btn-sm {
  padding: var(--spacing-xs) var(--spacing-md);
  font-size: var(--font-size-sm);
}

.btn-lg {
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: var(--font-size-lg);
}

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

/* ===== Button with Icon ===== */

.btn svg,
.btn i {
  width: 1.25em;
  height: 1.25em;
}

.btn-icon-only {
  padding: var(--spacing-sm);
  aspect-ratio: 1;
}

.btn-icon-only svg,
.btn-icon-only i {
  width: 1.5em;
  height: 1.5em;
}

/* ===== Block Button ===== */

.btn-block {
  width: 100%;
  display: flex;
}

/* ===== Button Group ===== */

.btn-group {
  display: inline-flex;
  gap: var(--spacing-sm);
}

.btn-group-vertical {
  flex-direction: column;
}

/* Connected Button Group (no gap) */
.btn-group-connected {
  gap: 0;
}

.btn-group-connected .btn:not(:first-child):not(:last-child) {
  border-radius: 0;
}

.btn-group-connected .btn:first-child {
  border-top-right-radius: 0;
  border-bottom-right-radius: 0;
}

.btn-group-connected .btn:last-child {
  border-top-left-radius: 0;
  border-bottom-left-radius: 0;
}

/* ===== Special Effects ===== */

/* Glow Effect */
.btn-glow-primary:hover {
  box-shadow: var(--glow-primary);
}

.btn-glow-secondary:hover {
  box-shadow: var(--glow-secondary);
}

/* Gradient Button */
.btn-gradient {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  color: var(--color-text-light);
  box-shadow: var(--shadow-sm);
}

.btn-gradient:hover {
  color: var(--color-text-light);
  box-shadow: var(--shadow-md), var(--glow-primary);
  transform: translateY(-1px);
}

/* Gradient Button Light to Orange */
.btn-gradient-light-orange {
  background: linear-gradient(135deg, var(--color-bg-elevated-3) 0%, var(--color-secondary) 100%);
  color: var(--color-text-light);
  box-shadow: var(--shadow-sm);
}

.btn-gradient-light-orange:hover {
  background: linear-gradient(135deg, var(--color-bg-elevated-2) 0%, var(--color-secondary-dark) 100%);
  color: var(--color-text-light);
  box-shadow: var(--shadow-md), var(--glow-secondary);
  transform: translateY(-1px);
}

/* ===== Responsive ===== */

@media (max-width: 767px) {
  .btn-responsive {
    width: 100%;
    justify-content: center;
  }

  .btn-xl {
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: var(--font-size-lg);
  }
}

/* ===== Link as Button ===== */

.link-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-family: var(--font-primary);
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary-light);
  text-decoration: none;
  transition: all var(--transition-fast);
}

.link-btn:hover {
  color: var(--color-primary);
  transform: translateX(4px);
}

.link-btn:visited {
  color: var(--color-primary-light);
}

.link-btn svg {
  transition: transform var(--transition-fast);
}

.link-btn:hover svg {
  transform: translateX(4px);
}

/* Arrow Link */
.link-arrow::after {
  content: '�';
  margin-left: var(--spacing-xs);
  transition: transform var(--transition-fast);
  display: inline-block;
}

.link-arrow:hover::after {
  transform: translateX(4px);
}