/**
 * HIG Alerts Component
 *
 * Shared alert and notification patterns used across the application.
 * Consolidates alert patterns from 14+ files.
 *
 * Components:
 *   - Alert banners (.hig-alert)
 *   - Toast notifications (.hig-toast)
 *   - Inline messages (.hig-message)
 *
 * Variants:
 *   .hig-alert--success    - Success alert (green)
 *   .hig-alert--warning    - Warning alert (yellow)
 *   .hig-alert--danger     - Danger/error alert (red)
 *   .hig-alert--info       - Info alert (blue)
 */

/* ========================================
   Alert Dialog
   ======================================== */

.hig-alert-dialog-backdrop {
  background: color-mix(in srgb, var(--hig-color-text) 48%, transparent);
  inset: 0;
  opacity: 0;
  position: fixed;
  transition: opacity 0.18s ease;
  z-index: var(--hig-z-modal);
}

.hig-alert-dialog-backdrop.is-open {
  opacity: 1;
}

.hig-alert-dialog {
  background: var(--hig-color-surface);
  border: 1px solid var(--hig-color-border);
  border-radius: var(--hig-radius-small);
  box-shadow: none;
  color: var(--hig-color-text);
  left: 50%;
  max-width: min(92vw, 440px);
  opacity: 0;
  padding: 1.25rem;
  position: fixed;
  top: 50%;
  transform: translate(-50%, -48%);
  transition: opacity 0.18s ease, transform 0.18s ease;
  width: 440px;
  z-index: var(--hig-z-popover);
}

.hig-alert-dialog.is-open {
  opacity: 1;
  transform: translate(-50%, -50%);
}

.hig-alert-dialog__header {
  display: grid;
  gap: 0.35rem;
}

.hig-alert-dialog__title {
  font-size: 1rem;
  font-weight: 650;
  margin: 0;
}

.hig-alert-dialog__description {
  color: var(--hig-color-text-secondary);
  font-size: 0.9rem;
  line-height: 1.5;
  margin: 0.5rem 0 0;
  white-space: pre-line;
}

.hig-alert-dialog__footer {
  display: flex;
  gap: 0.625rem;
  justify-content: flex-end;
  margin-top: 1.25rem;
}

.hig-alert-dialog--html {
  max-width: min(94vw, 560px);
  width: 560px;
}

body.hig-alert-dialog-open {
  overflow: hidden;
}

/* ========================================
   Base Alert
   ======================================== */

.alert {
  display: flex;
  align-items: flex-start;
  gap: var(--hig-spacing-3);
  padding: var(--hig-spacing-4) var(--hig-spacing-5);
  border: 1px solid transparent;
  border-radius: var(--hig-radius-small);
  color: var(--hig-color-text);
  font-size: var(--hig-font-size-base);
  line-height: 1.5;
}

.alert-success {
  background-color: var(--hig-alert-success-bg);
  border-color: var(--hig-alert-success-border);
  color: var(--hig-alert-success-text);
}

.alert-warning {
  background-color: var(--hig-alert-warning-bg);
  border-color: var(--hig-alert-warning-border);
  color: var(--hig-alert-warning-text);
}

.alert-danger {
  background-color: var(--hig-alert-danger-bg);
  border-color: var(--hig-alert-danger-border);
  color: var(--hig-alert-danger-text);
}

.alert-info {
  background-color: var(--hig-alert-info-bg);
  border-color: var(--hig-alert-info-border);
  color: var(--hig-alert-info-text);
}

.alert-primary,
.alert-secondary,
.alert-light,
.alert-dark {
  background-color: var(--hig-color-surface-alt);
  border-color: var(--hig-color-border);
  color: var(--hig-color-text);
}

.alert .btn-close {
  margin-left: auto;
}

.hig-alert {
  padding: var(--hig-spacing-4) var(--hig-spacing-5);
  border-radius: var(--hig-radius-small);
  border: 1px solid transparent;
  display: flex;
  align-items: flex-start;
  gap: var(--hig-spacing-3);
  margin-bottom: var(--hig-spacing-4);
  font-size: var(--hig-font-size-base);
  line-height: 1.5;
}

.hig-alert:last-child {
  margin-bottom: 0;
}

.hig-alert__icon {
  flex-shrink: 0;
  font-size: 20px;
  line-height: 1;
}

.hig-alert__content {
  flex: 1;
}

.hig-alert__title {
  font-weight: 600;
  margin: 0 0 var(--hig-spacing-1) 0;
  font-size: var(--hig-font-size-base);
}

.hig-alert__message {
  margin: 0;
}

.hig-alert__close {
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  font-size: 20px;
  line-height: 1;
  opacity: 0.6;
  transition: opacity 0.2s ease;
  flex-shrink: 0;
}

.hig-alert__close:hover {
  opacity: 1;
}

/* ========================================
   Alert Variants
   ======================================== */

/* Success Alert */
.hig-alert--success {
  background-color: var(--status-success-bg);
  border-color: var(--hig-color-success);
  color: var(--status-success-text);
}

.hig-alert--success .hig-alert__icon {
  color: var(--hig-color-success);
}

/* Warning Alert */
.hig-alert--warning {
  background-color: var(--status-warning-bg);
  border-color: var(--hig-color-warning);
  color: var(--status-warning-text);
}

.hig-alert--warning .hig-alert__icon {
  color: var(--hig-color-warning);
}

/* Danger Alert */
.hig-alert--danger {
  background-color: var(--status-danger-bg);
  border-color: var(--hig-color-danger);
  color: var(--status-danger-text);
}

.hig-alert--danger .hig-alert__icon {
  color: var(--hig-color-danger);
}

/* Info Alert */
.hig-alert--info {
  background-color: var(--status-info-bg);
  border-color: var(--hig-color-primary);
  color: var(--status-info-text);
}

.hig-alert--info .hig-alert__icon {
  color: var(--hig-color-primary);
}

/* ========================================
   Solid Alerts (filled background)
   ======================================== */

.hig-alert--success.hig-alert--solid {
  background-color: var(--hig-color-success);
  color: var(--text-on-accent);
  border-color: var(--hig-color-success);
}

.hig-alert--warning.hig-alert--solid {
  background-color: var(--hig-color-warning);
  color: var(--text-on-accent);
  border-color: var(--hig-color-warning);
}

.hig-alert--danger.hig-alert--solid {
  background-color: var(--hig-color-danger);
  color: var(--text-on-accent);
  border-color: var(--hig-color-danger);
}

.hig-alert--info.hig-alert--solid {
  background-color: var(--hig-color-primary);
  color: var(--text-on-accent);
  border-color: var(--hig-color-primary);
}

.hig-alert--solid .hig-alert__icon,
.hig-alert--solid .hig-alert__close {
  color: var(--text-on-accent);
}

/* ========================================
   Toast Notifications
   ======================================== */

.hig-toast-container {
  position: fixed;
  top: var(--hig-spacing-4);
  right: var(--hig-spacing-4);
  z-index: var(--hig-z-toast);
  display: flex;
  flex-direction: column;
  gap: var(--hig-spacing-3);
  max-width: 420px;
  width: 100%;
  pointer-events: none;
}

.hig-toast {
  background-color: var(--hig-color-surface);
  border: 1px solid var(--hig-color-border);
  border-radius: var(--hig-radius-small);
  box-shadow: none;
  padding: var(--hig-spacing-4);
  display: flex;
  align-items: flex-start;
  gap: var(--hig-spacing-3);
  pointer-events: all;
  animation: slideInRight 0.3s ease;
}

@keyframes slideInRight {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

.hig-toast--success {
  border-left: 4px solid var(--hig-color-success);
}

.hig-toast--warning {
  border-left: 4px solid var(--hig-color-warning);
}

.hig-toast--danger {
  border-left: 4px solid var(--hig-color-danger);
}

.hig-toast--info {
  border-left: 4px solid var(--hig-color-primary);
}

.hig-toast__icon {
  flex-shrink: 0;
  font-size: 24px;
  line-height: 1;
}

.hig-toast--success .hig-toast__icon {
  color: var(--hig-color-success);
}

.hig-toast--warning .hig-toast__icon {
  color: var(--hig-color-warning);
}

.hig-toast--danger .hig-toast__icon {
  color: var(--hig-color-danger);
}

.hig-toast--info .hig-toast__icon {
  color: var(--hig-color-primary);
}

.hig-toast__content {
  flex: 1;
}

.hig-toast__title {
  font-weight: 650;
  margin: 0 0 var(--hig-spacing-1) 0;
  font-size: var(--hig-font-size-base);
  color: var(--hig-color-text);
}

.hig-toast__message {
  margin: 0;
  font-size: var(--hig-font-size-sm);
  color: var(--hig-color-text-secondary);
  line-height: 1.5;
}

.hig-toast__close {
  background: none;
  border: none;
  padding: 0;
  cursor: pointer;
  font-size: 20px;
  line-height: 1;
  color: var(--hig-color-text-secondary);
  opacity: 0.6;
  transition: opacity 0.2s ease;
  flex-shrink: 0;
}

.hig-toast__close:hover {
  opacity: 1;
}

/* ========================================
   Inline Messages
   ======================================== */

.hig-message {
  padding: var(--hig-spacing-3) var(--hig-spacing-4);
  border-radius: var(--hig-radius-small);
  font-size: var(--hig-font-size-sm);
  line-height: 1.5;
  display: flex;
  align-items: center;
  gap: var(--hig-spacing-2);
}

.hig-message__icon {
  flex-shrink: 0;
  font-size: 16px;
}

.hig-message--success {
  background-color: var(--status-success-bg);
  color: var(--status-success-text);
}

.hig-message--success .hig-message__icon {
  color: var(--hig-color-success);
}

.hig-message--warning {
  background-color: var(--status-warning-bg);
  color: var(--status-warning-text);
}

.hig-message--warning .hig-message__icon {
  color: var(--hig-color-warning);
}

.hig-message--danger {
  background-color: var(--status-danger-bg);
  color: var(--status-danger-text);
}

.hig-message--danger .hig-message__icon {
  color: var(--hig-color-danger);
}

.hig-message--info {
  background-color: var(--status-info-bg);
  color: var(--status-info-text);
}

.hig-message--info .hig-message__icon {
  color: var(--hig-color-primary);
}

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

@media (max-width: 576px) {
  .hig-toast-container {
    top: var(--hig-spacing-2);
    right: var(--hig-spacing-2);
    left: var(--hig-spacing-2);
    max-width: 100%;
  }

  .hig-alert {
    padding: var(--hig-spacing-3) var(--hig-spacing-4);
  }
}