/**
 * JATT.LIVE COMPONENT — BUTTON
 * Variants: primary, secondary, ghost, icon, danger
 * States: default, hover, active, focus, disabled, loading
 */

.jatt-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 600;
  line-height: 1;
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  white-space: nowrap;
  user-select: none;
  text-decoration: none;
  min-height: 40px; /* Accessible touch target baseline */
  transition: background-color var(--duration-fast) var(--ease-spring),
              border-color var(--duration-fast) var(--ease-spring),
              color var(--duration-fast) var(--ease-spring),
              box-shadow var(--duration-fast) var(--ease-spring),
              transform var(--duration-micro) var(--ease-spring);
}

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

.jatt-btn:disabled,
.jatt-btn[aria-disabled="true"] {
  opacity: 0.45;
  cursor: not-allowed;
  pointer-events: none;
}

/* Primary Cyan Accent */
.jatt-btn-primary {
  background-color: var(--accent-cyan);
  color: var(--text-inverse);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

.jatt-btn-primary:hover:not(:disabled) {
  background-color: var(--accent-cyan-hover);
  box-shadow: 0 0 16px var(--accent-cyan-glow);
}

.jatt-btn-primary:active:not(:disabled) {
  background-color: var(--accent-cyan-active);
}

/* Secondary Surface */
.jatt-btn-secondary {
  background-color: var(--bg-subtle);
  color: var(--text-primary);
  border-color: var(--border-strong);
}

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

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

.jatt-btn-ghost:hover:not(:disabled) {
  color: var(--text-primary);
  background-color: var(--accent-cyan-surface);
}

/* Icon-Only Button */
.jatt-btn-icon {
  width: 40px;
  height: 40px;
  padding: 0;
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  background-color: transparent;
}

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

/* Danger Variant */
.jatt-btn-danger {
  background-color: var(--status-error-bg);
  color: var(--status-error);
  border-color: rgba(239, 68, 68, 0.3);
}

.jatt-btn-danger:hover:not(:disabled) {
  background-color: var(--status-error);
  color: #FFFFFF;
}

/* Loading State */
.jatt-btn.is-loading {
  position: relative;
  color: transparent !important;
  pointer-events: none;
}

.jatt-btn.is-loading::after {
  content: "";
  position: absolute;
  width: 18px;
  height: 18px;
  border: 2px solid currentColor;
  border-top-color: transparent;
  border-radius: var(--radius-full);
  animation: btnSpinner 0.6s linear infinite;
}

@keyframes btnSpinner {
  to { transform: rotate(360deg); }
}