/**
 * CRM PAANTEC - Custom CSS v2.0
 * FASE 4 (UX/UI Moderna): Animaciones, Empty States, Skeleton Loading, Accesibilidad mejorada
 * FASE 5 (Frontend Interactivo): HTMX Extensions, Alpine.js Stores, WebSockets, Infinite Scroll, Lazy Loading, PWA Manifest
 */

/* ===== IMPORTS ===== */
@import url("tokens.0a0730979148.css");

/* ===== ROOT VARIABLES ===== */
:root {
    /* Animaciones */
    --transition-instant: 150ms;
    --transition-fast: 200ms;
    --transition-normal: 300ms;
    --transition-slow: 500ms;
}

/* ===== ANIMATIONS ===== */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes fadeOut {
    from { opacity: 1; }
    to { opacity: 0; }
}

@keyframes slideIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes slideOut {
    from { opacity: 1; transform: translateY(0); }
    to { opacity: 0; transform: translateY(-20px); }
}

@keyframes scaleIn {
    from { opacity: 0; transform: scale(0.95); }
    to { opacity: 1; transform: scale(1); }
}

@keyframes scaleOut {
    from { opacity: 1; transform: scale(1); }
    to { opacity: 0; transform: scale(0.95); }
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

/* Animaciones suaves */
.animate-fade-in {
    animation: fadeIn var(--transition-normal) ease-out;
}

.animate-fade-out {
    animation: fadeOut var(--transition-normal) ease-in forwards;
}

.animate-slide-in {
    animation: slideIn var(--transition-normal) ease-out;
}

.animate-slide-out {
    animation: slideOut var(--transition-normal) ease-in forwards;
}

.animate-scale-in {
    animation: scaleIn var(--transition-fast) ease-out;
}

.animate-scale-out {
    animation: scaleOut var(--transition-fast) ease-in forwards;
}

.animate-pulse {
    animation: pulse var(--transition-slow) ease-in-out infinite;
}

.animate-spin {
    animation: spin var(--transition-slow) linear infinite;
}

.animate-bounce {
    animation: bounce var(--transition-normal) ease-in-out infinite;
}

/* Prefers reduced motion */
@media (prefers-reduced-motion: reduce) {
    .animate-fade-in,
    .animate-fade-out,
    .animate-slide-in,
    .animate-slide-out,
    .animate-scale-in,
    .animate-scale-out,
    .animate-pulse,
    .animate-spin,
    .animate-bounce {
        animation: none;
        transition: opacity var(--transition-normal);
    }
}

/* ===== SKELETON LOADING ===== */
.skeleton {
    background: linear-gradient(
        90deg,
        var(--bg-card),
        var(--bg-card),
        var(--bg-card)
    );
    background-size: 200% 100%;
    animation: shimmer 1.5s ease-in-out infinite;
    border-radius: var(--rounded-md);
}

.skeleton-text {
    height: var(--text-base);
  border-radius: var(--rounded-sm);
  width: 100%;
  min-width: 60px;
}

.skeleton-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  min-width: 40px;
  min-height: 40px;
}

.skeleton-button {
  height: 40px;
  width: 120px;
  border-radius: var(--rounded-md);
  min-width: 80px;
}

.skeleton-card {
  height: 120px;
  width: 100%;
  border-radius: var(--rounded-lg);
  min-height: 80px;
}

.skeleton-circle {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  min-width: 50px;
  min-height: 50px;
}

.skeleton-row {
  display: flex;
  gap: var(--space-4);
  margin-bottom: var(--space-2);
}

.skeleton-cell {
  flex: 1;
}

/* ===== EMPTY STATES ===== */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--section-padding-y) var(--section-padding-x);
  text-align: center;
  min-height: 400px;
  transition: opacity var(--transition-normal);
}

.empty-state-icon {
  font-size: 4rem;
  line-height: 1;
  margin-bottom: var(--space-4);
  opacity: 0.7;
  color: var(--text-muted);
}

.empty-state-title {
  font-size: var(--text-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}

.empty-state-description {
  font-size: var(--text-base);
  color: var(--text-secondary);
  margin-bottom: var(--space-6);
  max-width: 400px;
}

.empty-state-action {
  display: inline-flex;
  gap: var(--element-gap);
}

.empty-state-sm {
  padding: var(--space-6) var(--space-4);
  min-height: 200px;
}

.empty-state-sm .empty-state-icon {
  font-size: 2rem;
  margin-bottom: var(--space-2);
}

.empty-state-sm .empty-state-title {
  font-size: var(--text-base);
  margin-bottom: var(--space-1);
}

.empty-state-sm .empty-state-description {
  font-size: var(--text-sm);
  margin-bottom: var(--space-4);
}

/* ===== ERROR HANDLING UI ===== */
.error-boundary {
  padding: var(--section-padding-y) var(--section-padding-x);
}

.error-card {
  background: var(--bg-error-light);
  border: 1px solid var(--border-error);
  border-left: 4px solid var(--error-500);
  border-radius: var(--rounded-md);
  padding: var(--space-4);
  margin-bottom: var(--space-4);
}

.error-card.warning {
  background: var(--bg-warning-light);
  border-left-color: var(--warning-500);
}

.error-card.info {
  background: var(--bg-info-light);
  border-left-color: var(--primary-500);
}

.error-title {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-base);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}

.error-icon {
  font-size: 1.25rem;
}

.error-message {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  margin-bottom: var(--space-2);
}

.error-details {
  background: rgba(0, 0, 0, 0.1);
  border-radius: var(--rounded-sm);
  padding: var(--space-2);
  font-size: var(--text-xs);
  font-family: monospace;
  color: var(--text-secondary);
}

.error-actions {
  display: flex;
  gap: var(--element-gap);
  margin-top: var(--space-3);
}

/* ===== ACCESSIBILITY MEJORADA ===== */
/* Focus visible styles */
.btn:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 2px solid var(--border-focus);
  outline-offset: 2px;
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  .btn {
    border: 2px solid var(--text-primary);
  }
  
  .card {
    border: 1px solid var(--text-primary);
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Screen reader only */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* Skip links */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--primary-500);
  color: white;
  padding: var(--space-2) var(--space-3);
  z-index: 100;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: 0;
}

/* Focus indicators */
.focus-ring {
  box-shadow: 0 0 0 3px var(--primary-500);
  transition: box-shadow var(--transition-fast);
}

/* ===== INFINITE SCROLL ===== */
.infinite-scroll-trigger {
  width: 100%;
  height: 4px;
  border: none;
  background: transparent;
  padding: 0;
  margin: 0;
  cursor: default;
}

.infinite-scroll-loading {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: var(--space-4);
  gap: var(--space-2);
}

.infinite-scroll-loading .spinner {
  width: 20px;
  height: 20px;
}

.infinite-scroll-loading .spinner::after {
  content: '';
  display: block;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  border: 2px solid var(--primary-500);
  border-top-color: transparent;
  animation: spin 0.6s linear infinite;
}

.infinite-scroll-end {
  text-align: center;
  padding: var(--space-4);
  color: var(--text-muted);
  font-size: var(--text-sm);
}

/* ===== LAZY LOADING ===== */
.lazy-load {
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.lazy-load.loaded {
  opacity: 1;
}

.lazy-placeholder {
  background: var(--bg-card);
  border-radius: var(--rounded-md);
  min-height: 100px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
}

.lazy-spinner {
  width: 24px;
  height: 24px;
  border: 2px solid var(--border);
  border-top-color: var(--primary-500);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

/* ===== LIVE DASHBOARDS ===== */
.live-indicator {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-2);
  background: var(--success-100);
  border: 1px solid var(--success-200);
  border-radius: var(--rounded-full);
  font-size: var(--text-xs);
  font-weight: var(--font-weight-medium);
  color: var(--success-700);
}

.live-indicator.pulse {
  animation: pulse 2s ease-in-out infinite;
}

.live-dot {
  width: 8px;
  height: 8px;
  background: var(--success-500);
  border-radius: 50%;
}

.live-indicator.updating {
  background: var(--warning-100);
  border-color: var(--warning-200);
  color: var(--warning-700);
}

.live-indicator.updating .live-dot {
  background: var(--warning-500);
}

/* ===== LIVE NOTIFICATIONS ===== */
.notification-toast {
  position: fixed;
  top: var(--space-4);
  right: var(--space-4);
  z-index: 300;
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--rounded-lg);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
  transform: translateX(100%);
  opacity: 0;
  transition: transform var(--transition-normal), opacity var(--transition-normal);
  min-width: 320px;
}

.notification-toast.show {
  transform: translateX(0);
  opacity: 1;
}

.notification-icon {
  flex-shrink: 0;
  font-size: 1.5rem;
}

.notification-content {
  flex: 1;
  min-width: 0;
}

.notification-title {
  font-size: var(--text-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
  margin-bottom: var(--space-1);
}

.notification-message {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.4;
}

.notification-time {
  font-size: var(--text-xs);
  color: var(--text-muted);
  margin-top: var(--space-2);
}

.notification-close {
  flex-shrink: 0;
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: var(--space-1);
  font-size: 1.25rem;
  border-radius: var(--rounded-sm);
  transition: color var(--transition-fast);
}

.notification-close:hover {
  color: var(--text-primary);
}

/* ===== HTMX EXTENSIONS ===== */
.htmx-indicator {
  position: absolute;
  top: 50%;
  right: var(--space-2);
  transform: translateY(-50%);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-fast);
}

.htmx-request .htmx-indicator {
  opacity: 1;
}

.htmx-request {
  position: relative;
}

.htmx-indicator-inline {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-3);
  background: var(--primary-50);
  border-radius: var(--rounded-full);
  font-size: var(--text-xs);
  font-weight: var(--font-weight-medium);
  color: var(--primary-600);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.htmx-indicator-inline.show {
  opacity: 1;
}

.htmx-request .htmx-indicator-inline {
  opacity: 1;
}

/* ===== WEBSOCKET CONNECTION ===== */
.websocket-status {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--rounded-md);
  font-size: var(--text-xs);
  font-weight: var(--font-weight-medium);
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

.websocket-status.connected {
  background: var(--success-100);
  color: var(--success-700);
  border: 1px solid var(--success-200);
}

.websocket-status.connecting {
  background: var(--warning-100);
  color: var(--warning-700);
  border: 1px solid var(--warning-200);
  animation: pulse 1.5s ease-in-out infinite;
}

.websocket-status.disconnected {
  background: var(--error-100);
  color: var(--error-700);
  border: 1px solid var(--error-200);
}

.ws-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
}

.websocket-status.connected .ws-dot {
  background: var(--success-500);
}

.websocket-status.connecting .ws-dot {
  background: var(--warning-500);
}

.websocket-status.disconnected .ws-dot {
  background: var(--error-500);
}

/* ===== PROGRESS BARS ===== */
.progress {
  width: 100%;
  height: 8px;
  background: var(--bg-input);
  border-radius: var(--rounded-full);
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  background: var(--primary-500);
  border-radius: var(--rounded-full);
  transition: width var(--transition-normal);
}

.progress-bar.success {
  background: var(--success-500);
}

.progress-bar.warning {
  background: var(--warning-500);
}

.progress-bar.error {
  background: var(--error-500);
}

.progress.sm {
  height: 4px;
}

.progress.lg {
  height: 12px;
}

/* ===== TOAST NOTIFICATIONS ===== */
.toast-container {
  position: fixed;
  bottom: var(--space-4);
  right: var(--space-4);
  z-index: 200;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  max-width: 400px;
  pointer-events: none;
}

.toast {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--rounded-lg);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
  transform: translateX(120%);
  transition: transform var(--transition-normal);
  pointer-events: auto;
  min-width: 300px;
}

.toast.show {
  transform: translateX(0);
}

.toast.success {
  border-left: 4px solid var(--success-500);
}

.toast.error {
  border-left: 4px solid var(--error-500);
}

.toast.warning {
  border-left: 4px solid var(--warning-500);
}

.toast.info {
  border-left: 4px solid var(--primary-500);
}

.toast-icon {
  font-size: 1.25rem;
  flex-shrink: 0;
}

.toast-content {
  flex: 1;
  min-width: 0;
}

.toast-title {
  font-size: var(--text-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
  margin-bottom: var(--space-1);
}

.toast-message {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.4;
}

.toast-close {
  flex-shrink: 0;
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: var(--space-1);
  font-size: 1.25rem;
  border-radius: var(--rounded-sm);
  transition: color var(--transition-fast);
}

.toast-close:hover {
  color: var(--text-primary);
}

/* ===== TRANSITIONS ===== */
.page-transition {
  transition: opacity var(--transition-normal), transform var(--transition-normal);
}

.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  z-index: 50;
  opacity: 0;
  transition: opacity var(--transition-normal);
  pointer-events: none;
}

.modal-backdrop.show {
  opacity: 1;
  pointer-events: auto;
}

/* ===== UTILITY CLASSES ===== */
.hover-lift {
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.hover-lift:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

.click-scale {
  transition: transform var(--transition-fast);
}

.click-scale:active {
  transform: scale(0.98);
}

/* ===== PWA ===== */
.pwa-install-prompt {
  position: fixed;
  bottom: var(--space-4);
  left: var(--space-4);
  padding: var(--space-4);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--rounded-lg);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
  z-index: 300;
  transform: translateY(100%);
  opacity: 0;
  transition: transform var(--transition-normal), opacity var(--transition-normal);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  min-width: 320px;
}

.pwa-install-prompt.show {
  transform: translateY(0);
  opacity: 1;
}

.pwa-icon {
  width: 48px;
  height: 48px;
  background: var(--primary-500);
  border-radius: var(--rounded-md);
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.pwa-content {
  flex: 1;
}

.pwa-title {
  font-size: var(--text-base);
  font-weight: var(--font-weight-semibold);
  color: var(--text-primary);
  margin-bottom: var(--space-1);
}

.pwa-message {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  margin-bottom: var(--space-3);
}

.pwa-actions {
  display: flex;
  gap: var(--space-2);
}

.pwa-actions .btn-secondary {
  padding: var(--space-2) var(--space-3);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .notification-toast {
    top: var(--space-2);
    right: var(--space-2);
    left: var(--space-2);
    min-width: auto;
    transform: translateY(-100%);
  }
  
  .notification-toast.show {
    transform: translateY(0);
  }
  
  .toast-container {
    top: var(--space-2);
    right: var(--space-2);
    left: var(--space-2);
    max-width: calc(100% - var(--space-4));
  }
  
  .toast {
    min-width: auto;
  }
  
  .pwa-install-prompt {
    bottom: var(--space-2);
    left: var(--space-2);
    right: var(--space-2);
    min-width: auto;
  }
}

/* ===== DARK MODE ENHANCEMENTS ===== */
.dark {
  --bg-error-light: rgba(239, 68, 68, 0.1);
  --bg-warning-light: rgba(254, 243, 199, 0.1);
  --bg-info-light: rgba(91, 33, 182, 0.1);
}

.dark .error-card {
  background: var(--bg-800);
}

.dark .empty-state-icon {
  opacity: 0.5;
}

.dark .skeleton {
  background: linear-gradient(
    90deg,
    var(--bg-700),
    var(--bg-800),
    var(--bg-700)
  );
}

.dark .notification-toast,
.dark .toast {
  background: var(--bg-800);
  border-color: var(--border-dark);
}

.dark .websocket-status.connected {
  background: var(--success-900);
  border-color: var(--success-800);
}

.dark .websocket-status.connecting {
  background: var(--warning-900);
  border-color: var(--warning-800);
}

.dark .websocket-status.disconnected {
  background: var(--error-900);
  border-color: var(--error-800);
}