/* variables globales de colores y marca OXXO - Tema Claro */
:root {
  --oxxo-red: #E51A1A;
  --oxxo-yellow: #FFF200;
  --oxxo-red-hover: #C41212;
  --bg-dark: #F4F6F9; /* Fondo claro de la app */
  --bg-card: #FFFFFF; /* Tarjetas y paneles en blanco puro */
  --text-white: #1A1A1E; /* Texto principal oscuro */
  --text-gray: #626270; /* Texto secundario gris */
  --border-gray: #E2E8F0; /* Bordes suaves y claros */
  --accent: #FF9F00;
  --success: #10B981;
  --danger: #EF4444;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: 'Outfit', 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

body {
  background-color: var(--bg-dark);
  color: var(--text-white);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header de Admin con Branding OXXO */
header {
  background: linear-gradient(135deg, var(--oxxo-red) 0%, #a80c0c 100%);
  border-bottom: 5px solid var(--oxxo-yellow);
  padding: 1rem 2rem;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.header-container {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.logo-group {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.logo-container {
  height: 65px;
  background-color: #FFFFFF;
  padding: 5px 12px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  transition: transform 0.2s ease;
  border: 1px solid #E2E8F0;
}

.logo-container:hover {
  transform: scale(1.05);
}

.logo-container img {
  max-height: 100%;
  max-width: 150px;
  object-fit: contain;
}

.logo-ti {
  background-color: #FFFFFF;
  padding: 3px 8px;
}

.header-title {
  text-align: right;
}

.header-title h1 {
  font-size: 1.6rem;
  font-weight: 800;
  letter-spacing: 0.5px;
  color: #FFFFFF;
  text-shadow: 1px 1px 3px rgba(0,0,0,0.2);
}

.header-title p {
  font-size: 0.9rem;
  color: var(--oxxo-yellow);
  font-weight: 600;
  text-transform: uppercase;
}

/* Contenido Principal */
main {
  flex: 1;
  max-width: 1400px;
  width: 100%;
  margin: 2rem auto;
  padding: 0 2rem;
  display: block;
}

/* Barra de Navegación Horizontal */
.navigation-bar {
  background-color: var(--bg-card);
  border-bottom: 1px solid var(--border-gray);
  box-shadow: 0 2px 8px rgba(0,0,0,0.02);
  width: 100%;
  padding: 0.75rem 0;
}

.nav-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  gap: 0.75rem;
}

.tab-btn {
  background: none;
  border: none;
  color: var(--text-gray);
  padding: 0.75rem 1.5rem;
  font-size: 0.95rem;
  font-weight: 700;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.tab-btn:hover {
  background-color: rgba(0, 0, 0, 0.03);
  color: var(--text-white);
}

.tab-btn.active {
  background-color: var(--oxxo-red);
  color: #FFFFFF;
  box-shadow: 0 4px 10px rgba(229, 26, 26, 0.25);
}

/* Área de Contenido Principal */
.content-area {
  background-color: var(--bg-card);
  border: 1px solid var(--border-gray);
  border-radius: 12px;
  padding: 2rem;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.04);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
  animation: fadeIn 0.4s ease forwards;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

h2 {
  font-size: 1.8rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  border-left: 5px solid var(--oxxo-red);
  padding-left: 0.75rem;
  color: var(--text-white);
}

/* Zona de Carga (Drag & Drop) */
.upload-zone {
  border: 2px dashed #CBD5E1;
  background-color: #F8FAFC;
  border-radius: 12px;
  padding: 1.25rem 2rem;
  text-align: center;
  cursor: pointer;
  transition: all 0.3s ease;
  margin-bottom: 2rem;
}

.upload-zone:hover, .upload-zone.dragover {
  border-color: var(--oxxo-red);
  background-color: rgba(229, 26, 26, 0.03);
}

.upload-zone i {
  font-size: 1.8rem;
  color: var(--oxxo-red);
  margin-bottom: 0.5rem;
  display: block;
}

.upload-zone p {
  font-size: 0.95rem;
  margin-bottom: 0.25rem;
  font-weight: 600;
  color: #334155;
}

.upload-zone span {
  font-size: 0.8rem;
  color: var(--text-gray);
}

#file-input {
  display: none;
}

/* Galería de Imágenes */
.image-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 1.5rem;
  margin-top: 1.5rem;
}

.image-card {
  background-color: #FFFFFF;
  border: 1px solid var(--border-gray);
  border-radius: 8px;
  overflow: hidden;
  position: relative;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
  display: flex;
  flex-direction: column;
  box-shadow: 0 2px 4px rgba(0,0,0,0.02);
}

.image-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.08);
}

.image-preview-wrapper {
  position: relative;
  width: 100%;
  padding-top: 133%; /* Proporción flyer typical 3:4 */
  background-color: #F1F5F9;
  border-bottom: 1px solid var(--border-gray);
}

.image-card img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.image-info {
  padding: 0.75rem;
  font-size: 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.image-name {
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  color: var(--text-white);
}

.image-date {
  color: var(--text-gray);
  font-size: 0.75rem;
}

.delete-btn {
  background-color: rgba(239, 68, 68, 0.08);
  color: var(--danger);
  border: 1px solid rgba(239, 68, 68, 0.2);
  padding: 0.4rem 0.6rem;
  border-radius: 4px;
  font-size: 0.8rem;
  cursor: pointer;
  transition: all 0.2s ease;
  margin-top: 0.5rem;
  font-weight: 600;
  text-align: center;
}

.delete-btn:hover {
  background-color: var(--danger);
  color: #FFFFFF;
  border-color: var(--danger);
}

/* Diseñador de Playlists */
.playlist-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  background-color: #F8FAFC;
  padding: 1.5rem;
  border-radius: 8px;
  margin-bottom: 2rem;
  border: 1px solid var(--border-gray);
}

.form-row {
  display: flex;
  gap: 1.5rem;
  width: 100%;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.flex-3 {
  flex: 3;
}

.flex-1 {
  flex: 1;
}

@media (max-width: 600px) {
  .form-row {
    flex-direction: column;
    gap: 1rem;
  }
}

label {
  font-weight: 600;
  color: #334155;
}

input[type="text"], input[type="number"], select {
  background-color: #FFFFFF;
  border: 1px solid #CBD5E1;
  color: var(--text-white);
  padding: 0.75rem 1rem;
  border-radius: 6px;
  font-size: 1rem;
  outline: none;
  transition: all 0.2s ease;
}

input[type="text"]:focus, input[type="number"]:focus, select:focus {
  border-color: var(--oxxo-red);
  box-shadow: 0 0 0 3px rgba(229, 26, 26, 0.1);
}

.playlist-selector-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.selector-panel {
  border: 1px solid var(--border-gray);
  border-radius: 8px;
  padding: 1rem;
  background-color: #FFFFFF;
  height: 350px;
  overflow-y: auto;
  box-shadow: inset 0 2px 4px rgba(0,0,0,0.01);
}

.selector-panel h3 {
  font-size: 1rem;
  margin-bottom: 0.75rem;
  color: var(--oxxo-red);
  border-bottom: 1px solid var(--border-gray);
  padding-bottom: 0.5rem;
}

.item-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.selector-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.5rem;
  background-color: #F8FAFC;
  border: 1px solid var(--border-gray);
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s;
  color: var(--text-white);
}

.selector-item:hover {
  background-color: #F1F5F9;
  border-color: #CBD5E1;
}

.selector-item img {
  width: 40px;
  height: 50px;
  object-fit: cover;
  border-radius: 4px;
  border: 1px solid var(--border-gray);
}

.selector-item-name {
  font-size: 0.85rem;
  font-weight: 600;
  flex: 1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  color: #334155;
}

.selector-item button {
  background: none;
  border: none;
  color: #64748B;
  cursor: pointer;
  transition: color 0.2s;
}

.selector-item button:hover {
  color: var(--oxxo-red);
}

.primary-btn {
  background-color: var(--oxxo-red);
  color: white;
  border: none;
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  font-weight: 700;
  border-radius: 6px;
  cursor: pointer;
  transition: background-color 0.2s;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  text-transform: uppercase;
}

.primary-btn:hover {
  background-color: var(--oxxo-red-hover);
  box-shadow: 0 4px 12px rgba(229, 26, 26, 0.25);
}

.secondary-btn {
  background-color: transparent;
  border: 1px solid #CBD5E1;
  color: #475569;
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  font-weight: 600;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.2s;
}

.secondary-btn:hover {
  background-color: #F8FAFC;
  border-color: #94A3B8;
  color: #1E293B;
}

/* Lista de Playlists existentes */
.playlist-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}

.playlist-card {
  background-color: #FFFFFF;
  border: 1px solid var(--border-gray);
  border-radius: 8px;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  transition: transform 0.2s, box-shadow 0.2s;
  box-shadow: 0 2px 4px rgba(0,0,0,0.02);
}

.playlist-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.05);
}

.playlist-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}

.playlist-title {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text-white);
}

.playlist-badge {
  background-color: var(--oxxo-red);
  color: #FFFFFF;
  font-size: 0.75rem;
  font-weight: 800;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  box-shadow: 0 2px 4px rgba(229, 26, 26, 0.2);
}

.playlist-info-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--text-gray);
}

.playlist-info-row strong {
  color: #1E293B;
}

.playlist-actions {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.5rem;
}

.playlist-actions button {
  flex: 1;
  padding: 0.5rem;
  font-size: 0.8rem;
  font-weight: 600;
  border-radius: 4px;
  cursor: pointer;
  border: none;
  transition: background-color 0.2s;
}

.edit-btn {
  background-color: #EFF6FF;
  color: #1D4ED8;
  border: 1px solid #BFDBFE;
}

.edit-btn:hover {
  background-color: #3B82F6;
  color: #FFFFFF;
  border-color: #3B82F6;
}

.delete-pl-btn {
  background-color: #FEF2F2;
  color: #DC2626;
  border: 1px solid #FEE2E2;
}

.delete-pl-btn:hover {
  background-color: var(--danger);
  color: #FFFFFF;
  border-color: var(--danger);
}

/* Reproducción y Control Activo */
.control-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

.active-playlist-display {
  background-color: #FFFFFF;
  border: 1px solid var(--border-gray);
  border-radius: 8px;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  box-shadow: 0 2px 4px rgba(0,0,0,0.01);
}

.active-status-banner {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.1rem;
  font-weight: 700;
  color: #334155;
}

.status-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background-color: var(--success);
  box-shadow: 0 0 8px var(--success);
}

.status-dot.inactive {
  background-color: var(--danger);
  box-shadow: 0 0 8px var(--danger);
}

.viewer-launcher {
  background-color: #FFFFFF;
  border: 1px solid var(--border-gray);
  border-radius: 8px;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  gap: 1rem;
  box-shadow: 0 2px 4px rgba(0,0,0,0.01);
}

.viewer-launcher i {
  font-size: 3rem;
  color: var(--oxxo-red);
}

.viewer-launcher p {
  color: var(--text-gray);
  margin-bottom: 0.5rem;
}

/* Animaciones y Notificaciones */
.notification {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  padding: 1rem 1.5rem;
  border-radius: 6px;
  color: white;
  font-weight: 600;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
  z-index: 1000;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  animation: slideUp 0.3s ease forwards;
}

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

.notification.error {
  background-color: var(--danger);
}

@keyframes slideUp {
  from { transform: translateY(50px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

/* Estilos de Ordenamiento (Drag handle) */
.drag-handle {
  cursor: grab;
  padding: 0.25rem;
}

/* --- ESTILOS DEL REPRODUCTOR (visualiza.html) --- */
.viewer-body {
  background-color: #000;
  width: 100vw;
  height: 100vh;
  margin: 0;
  padding: 0;
  overflow: hidden;
  display: flex;
  justify-content: center;
  align-items: center;
}

.viewer-container {
  position: relative;
  width: 100%;
  height: 100%;
  background-color: #000;
}

.viewer-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 1.2s ease-in-out;
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: #000;
}

.viewer-slide.active {
  opacity: 1;
  z-index: 2;
}

.viewer-slide img {
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  object-fit: contain; /* Mantiene proporciones del flyer */
}

/* Indicador de pantalla vacía */
.empty-viewer {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  color: #94A3B8;
  text-align: center;
  padding: 2rem;
}

.empty-viewer img {
  max-height: 100px;
  margin-bottom: 1rem;
}

.empty-viewer h2 {
  border: none;
  font-size: 2.2rem;
  color: #fff;
  padding: 0;
}

/* Responsive */
@media (max-width: 900px) {
  main {
    grid-template-columns: 1fr;
  }
  .playlist-selector-grid {
    grid-template-columns: 1fr;
  }
  .control-grid {
    grid-template-columns: 1fr;
  }
}