/* ==========================================================================
   BrightAI Design System - Buttons Component
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: inherit;
  font-weight: 500;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  user-select: none;
  white-space: nowrap;
  text-decoration: none;
  transition: var(--transition-fast);
  gap: var(--spacing-sm);
}

.btn:active {
  transform: scale(0.98);
}

.btn:disabled,
.btn.is-disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none !important;
}

/* --- BUTTON SIZES --- */

/* Small (sm) */
.btn-sm {
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: var(--font-size-xs);
  height: 32px;
  border-radius: var(--radius-sm);
}

/* Medium (md - Default) */
.btn-md {
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: var(--font-size-sm);
  height: 40px;
}

/* Large (lg) */
.btn-lg {
  padding: var(--spacing-md) var(--spacing-lg);
  font-size: var(--font-size-md);
  height: 48px;
  border-radius: var(--radius-lg);
}

/* --- BUTTON VARIANTS --- */

/* Primary Button */
.btn-primary {
  background-color: var(--color-primary);
  color: var(--text-on-primary);
}
.btn-primary:hover:not(:disabled) {
  background-color: var(--color-primary-hover);
  box-shadow: var(--shadow-1);
}
.btn-primary:active:not(:disabled) {
  background-color: var(--color-primary);
}

/* Secondary Button */
.btn-secondary {
  background-color: var(--color-secondary);
  color: var(--text-on-primary);
}
.btn-secondary:hover:not(:disabled) {
  background-color: var(--color-secondary-hover);
  box-shadow: var(--shadow-1);
}
.btn-secondary:active:not(:disabled) {
  background-color: var(--color-secondary);
}

/* Outline Button (Premium Linear/Stripe style) */
.btn-outline {
  background-color: transparent;
  border-color: var(--color-border);
  color: var(--text-secondary);
}
.btn-outline:hover:not(:disabled) {
  background-color: var(--color-surface-hover);
  border-color: var(--color-border-hover);
  color: var(--text-primary);
}
.btn-outline:active:not(:disabled) {
  background-color: var(--color-border);
}

/* Ghost Button */
.btn-ghost {
  background-color: transparent;
  color: var(--text-secondary);
}
.btn-ghost:hover:not(:disabled) {
  background-color: var(--color-surface-hover);
  color: var(--text-primary);
}
.btn-ghost:active:not(:disabled) {
  background-color: var(--color-border);
}

/* Link Button */
.btn-link {
  background-color: transparent;
  color: var(--color-primary);
  border: none;
  padding: 0 !important;
  height: auto !important;
  border-radius: 0;
}
.btn-link:hover:not(:disabled) {
  color: var(--color-primary-hover);
  text-decoration: underline;
}

/* --- FUNCTIONAL STATES (Colors) --- */
.btn-success {
  background-color: var(--color-success);
  color: var(--text-on-primary);
}
.btn-success:hover:not(:disabled) {
  background-color: var(--color-success-hover);
}

.btn-danger {
  background-color: var(--color-danger);
  color: var(--text-on-primary);
}
.btn-danger:hover:not(:disabled) {
  background-color: var(--color-danger-hover);
}

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

/* Icon alignments in LTR/RTL */
.btn-icon-start {
  order: 1;
}
.btn-icon-end {
  order: 3;
}
.btn-text {
  order: 2;
}

/* Mirroring specific icons automatically for RTL */
[dir="rtl"] .btn .btn-arrow-right {
  transform: scaleX(-1);
}