/**
 * Components - Componentes UI reutilizables
 * Usan design tokens de tokens.css
 */

/* ===================================
   BOTONES
   =================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all var(--transition-base) var(--ease-out);
  min-height: var(--touch-target-min);
  user-select: none;
  -webkit-tap-highlight-color: transparent;
  position: relative;
  overflow: hidden;
}

.btn:active {
  transform: scale(0.96);
}

.btn:disabled {
  opacity: var(--opacity-disabled);
  cursor: not-allowed;
  transform: none !important;
}

/* Variantes de botón */
.btn-primary {
  background-color: var(--color-primary);
  color: white;
}

.btn-primary:hover {
  background-color: color-mix(in srgb, var(--color-primary) 90%, black);
}

.btn-success {
  background-color: var(--color-success);
  color: white;
}

.btn-warning {
  background-color: var(--color-warning);
  color: white;
}

.btn-critical {
  background-color: var(--color-critical);
  color: white;
}

.btn-secondary {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
}

.btn-ghost {
  background-color: transparent;
  color: var(--color-primary);
}

.btn-ghost:active {
  background-color: var(--bg-secondary);
}

/* Tamaños de botón */
.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--font-size-sm);
  min-height: 36px;
}

.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--font-size-lg);
  min-height: var(--touch-target-comfortable);
}

.btn-block {
  width: 100%;
}

/* Botón con icono */
.btn-icon {
  width: var(--touch-target-min);
  height: var(--touch-target-min);
  padding: 0;
  border-radius: var(--radius-full);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background-color: transparent;
  color: var(--color-primary);
  transition: all var(--transition-fast) var(--ease-out);
}

.btn-icon:active {
  background-color: var(--bg-secondary);
  transform: scale(0.9);
}

/* ===================================
   CARDS (Recordatorios)
   =================================== */

.reminder-card {
  background: var(--surface-card);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  margin-bottom: var(--space-3);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base) var(--ease-out);
  border: 1px solid var(--border-light);
  cursor: pointer;
  user-select: none;
  position: relative;
  overflow: hidden;
}

.reminder-card:active {
  transform: translateY(2px);
  box-shadow: var(--shadow-xs);
}

.reminder-card::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background-color: transparent;
  transition: background-color var(--transition-base);
}

/* Prioridades */
.reminder-card[data-priority="normal"]::before {
  background-color: var(--color-primary);
}

.reminder-card[data-priority="important"]::before {
  background-color: var(--color-warning);
}

.reminder-card[data-priority="critical"]::before {
  background-color: var(--color-critical);
  animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

.reminder-card.completed {
  opacity: var(--opacity-subtle);
}

.reminder-card.completed .reminder-text {
  text-decoration: line-through;
  color: var(--text-tertiary);
}

/* Contenido del card */
.reminder-header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-2);
}

.reminder-time {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--text-secondary);
}

.reminder-text {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-medium);
  color: var(--text-primary);
  margin-bottom: var(--space-2);
  line-height: var(--line-height-normal);
}

.reminder-meta {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.reminder-category {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-size: var(--font-size-sm);
  color: var(--text-tertiary);
  padding: var(--space-1) var(--space-2);
  background-color: var(--bg-secondary);
  border-radius: var(--radius-sm);
}

.reminder-notes {
  font-size: var(--font-size-sm);
  color: var(--text-tertiary);
  margin-top: var(--space-2);
  font-style: italic;
}

/* ===================================
   FORMULARIOS
   =================================== */

.form-group {
  margin-bottom: var(--space-5);
}

.form-label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--text-secondary);
  margin-bottom: var(--space-2);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  font-size: var(--font-size-base);
  color: var(--text-primary);
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast) var(--ease-out);
  min-height: var(--touch-target-min);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  background-color: var(--bg-primary);
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-primary) 10%, transparent);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--text-tertiary);
}

.form-textarea {
  resize: vertical;
  min-height: 100px;
  font-family: inherit;
}

/* Input con icono */
.input-group {
  position: relative;
}

.input-group .form-input {
  padding-left: var(--space-10);
}

.input-icon {
  position: absolute;
  left: var(--space-4);
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-tertiary);
  pointer-events: none;
}

/* ===================================
   RADIO BUTTONS (Prioridades visuales)
   =================================== */

.priority-selector {
  display: flex;
  gap: var(--space-3);
  align-items: center;
}

.priority-option {
  position: relative;
}

.priority-option input[type="radio"] {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.priority-label {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-3);
  border: 2px solid var(--border-medium);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  min-width: 80px;
}

.priority-option input[type="radio"]:checked + .priority-label {
  border-color: var(--color-primary);
  background-color: color-mix(in srgb, var(--color-primary) 10%, transparent);
}

.priority-icon {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-xl);
}

.priority-icon.normal {
  background-color: var(--color-primary);
  color: white;
}

.priority-icon.important {
  background-color: var(--color-warning);
  color: white;
}

.priority-icon.critical {
  background-color: var(--color-critical);
  color: white;
}

.priority-text {
  font-size: var(--font-size-xs);
  color: var(--text-secondary);
  font-weight: var(--font-weight-medium);
}

/* ===================================
   NAVIGATION
   =================================== */

.nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-1);
  min-width: var(--touch-target-min);
  min-height: var(--touch-target-min);
  padding: var(--space-2);
  color: var(--text-tertiary);
  background: transparent;
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast) var(--ease-out);
  position: relative;
  flex: 1;
}

.nav-item.active {
  color: var(--color-primary);
}

.nav-item:active {
  transform: scale(0.9);
}

.nav-label {
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
}

.nav-badge {
  position: absolute;
  top: var(--space-1);
  right: var(--space-2);
  background-color: var(--color-critical);
  color: white;
  font-size: 10px;
  font-weight: var(--font-weight-bold);
  padding: 2px 6px;
  border-radius: var(--radius-full);
  min-width: 18px;
  text-align: center;
}

/* ===================================
   EMPTY STATE
   =================================== */

.empty-state {
  text-align: center;
  padding: var(--space-12) var(--space-4);
}

.empty-icon {
  font-size: 64px;
  margin-bottom: var(--space-4);
  opacity: var(--opacity-subtle);
}

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

.empty-description {
  font-size: var(--font-size-base);
  color: var(--text-tertiary);
  max-width: 280px;
  margin: 0 auto var(--space-6);
}

/* ===================================
   LOADING SPINNER
   =================================== */

.loading-spinner {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  background-color: var(--bg-primary);
  z-index: var(--z-modal);
}

.spinner {
  width: 48px;
  height: 48px;
  border: 4px solid var(--bg-tertiary);
  border-top-color: var(--color-primary);
  border-radius: var(--radius-full);
  animation: spin 0.8s linear infinite;
}

/* ===================================
   TOAST NOTIFICATIONS
   =================================== */

.toast-container {
  position: fixed;
  top: max(var(--space-4), var(--safe-area-top));
  left: var(--space-4);
  right: var(--space-4);
  z-index: var(--z-toast);
  pointer-events: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.toast {
  background-color: var(--surface-elevated);
  color: var(--text-primary);
  padding: var(--space-4);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  pointer-events: auto;
  animation: slideUp var(--transition-base) var(--ease-out);
  border: 1px solid var(--border-medium);
}

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

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

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

.toast-icon {
  flex-shrink: 0;
}

.toast-content {
  flex: 1;
}

.toast-title {
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--space-1);
}

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

/* ===================================
   SECTION HEADERS
   =================================== */

.section-header {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-wide);
  margin: var(--space-6) 0 var(--space-3);
  padding-left: var(--space-2);
}

.section-header:first-child {
  margin-top: 0;
}

/* ===================================
   SWIPE ACTIONS (para completar/eliminar)
   =================================== */

.swipe-container {
  position: relative;
  overflow: hidden;
}

.swipe-actions {
  position: absolute;
  right: 0;
  top: 0;
  bottom: 0;
  display: flex;
  transform: translateX(100%);
  transition: transform var(--transition-base) var(--ease-out);
}

.swipe-container.swiped .swipe-actions {
  transform: translateX(0);
}

.swipe-action {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 var(--space-6);
  color: white;
  font-weight: var(--font-weight-semibold);
  cursor: pointer;
  min-width: 80px;
}

.swipe-action.complete {
  background-color: var(--color-success);
}

.swipe-action.delete {
  background-color: var(--color-critical);
}

/* ===================================
   DIVIDER
   =================================== */

.divider {
  height: 1px;
  background-color: var(--border-light);
  margin: var(--space-6) 0;
}