/**
 * styles.css
 * 
 * Estilos globales y maquetación de la plataforma e-learning de élite (Aurelian System).
 * Aplica una paleta clara premium ("Quiet Luxury"), tipografía editorial y
 * componentes con sombras finas y esquinas nítidas.
 * 
 * Ajustado para soportar visualización a pantalla completa (full width),
 * botones rectangulares con bordes redondeados y avatar de mentor ampliado.
 */

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-primary);
  color: var(--text-main);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  
  /* Gradiente radial premium sutil de fondo */
  background-image: 
    radial-gradient(at 0% 0%, hsla(45, 60%, 48%, 0.04) 0px, transparent 40%),
    radial-gradient(at 100% 100%, hsla(204, 8%, 45%, 0.03) 0px, transparent 40%);
  background-size: 100% 100%;
}

/* ==========================================================================
   Sección: Barra de Navegación del Sistema (Header Superior)
   ========================================================================== */
.system-nav {
  height: 70px;
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 var(--spacing-xl);
  z-index: 100;
  position: sticky;
  top: 0;
  box-shadow: var(--shadow-sm);
}

.nav-brand {
  font-family: var(--font-family-title);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  letter-spacing: -0.02em;
  color: var(--color-primary);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.brand-glow {
  color: var(--color-primary);
  position: relative;
}

.brand-glow::after {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  background-color: var(--color-accent);
  border-radius: var(--border-radius-circle);
  margin-left: 2px;
}

.brand-label-admin {
  background-color: hsl(45, 90%, 92%);
  color: var(--color-accent);
  font-family: var(--font-family);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-bold);
  text-transform: uppercase;
  padding: 2px var(--spacing-sm);
  border-radius: var(--border-radius-sm);
  letter-spacing: 0.05em;
  border: 1px solid hsla(45, 60%, 48%, 0.2);
}

/* Botón Volver al Portal en Admin */
.btn-back-to-student {
  background-color: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-main);
  text-decoration: none;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--border-radius-button);
  display: inline-flex;
  align-items: center;
  transition: all var(--transition-fast);
}

.btn-back-to-student:hover {
  background-color: var(--bg-primary);
  border-color: var(--text-muted);
}

.btn-back-to-student svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
}

/* ==========================================================================
   Contenedores de Vista SPA
   ========================================================================== */
.view-container {
  display: none;
  flex: 1;
  width: 100%;
}

.view-container.active {
  display: flex;
}

/* ==========================================================================
   VISTA ALUMNO: Distribución en 3 Columnas a Pantalla Completa (Full Width)
   ========================================================================== */
.elearning-layout {
  display: grid;
  grid-template-columns: 1fr;
  width: 100%;
  max-width: 100%; /* Ajuste a pantalla completa */
  margin: 0;
  padding: var(--spacing-md) var(--spacing-xl); /* Padding generoso */
  gap: var(--spacing-lg);
  box-sizing: border-box;
}

@media (min-width: 992px) {
  .elearning-layout {
    grid-template-columns: 280px 1fr 340px; /* Sidebar derecho más ancho y llamativo */
    height: calc(100vh - 70px);
    overflow: hidden;
  }
}

/* Columna Lateral Izquierda (Menú del Curso) */
.sidebar-left {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-md);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
}

.sidebar-header h3 {
  font-family: var(--font-family-title);
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-bold);
  color: var(--text-main);
  letter-spacing: -0.01em;
}

.course-subtitle {
  font-size: var(--font-size-xs);
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: var(--font-weight-semibold);
}

.navigation-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.group-title {
  font-size: 11px;
  color: var(--text-muted);
  text-transform: uppercase;
  font-weight: var(--font-weight-bold);
  letter-spacing: 0.05em;
}

.nav-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.nav-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--border-radius-sm);
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.nav-link:hover:not(.locked) {
  background-color: var(--bg-primary);
  color: var(--text-main);
}

.nav-link.active {
  background-color: hsl(45, 90%, 92%);
  color: var(--color-primary);
  font-weight: var(--font-weight-semibold);
}

.nav-link.locked {
  opacity: 0.4;
  cursor: not-allowed;
}

.link-bullet {
  width: 6px;
  height: 6px;
  border-radius: var(--border-radius-circle);
  background-color: var(--text-muted);
  margin-right: var(--spacing-sm);
}

.nav-link.active .link-bullet {
  background-color: var(--color-accent);
}

.nav-link.completed::after {
  content: "✓";
  color: var(--color-success);
  font-weight: bold;
}

/* Columna Central: Contenido y Reproductor */
.main-content {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-xl);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
  box-shadow: var(--shadow-sm);
}

.lesson-header {
  border-bottom: 1px solid var(--border-color);
  padding-bottom: var(--spacing-md);
}

.lesson-title {
  font-family: var(--font-family-title);
  font-size: var(--font-size-xxl);
  font-weight: var(--font-weight-bold);
  letter-spacing: -0.02em;
  color: var(--color-primary);
}

.lesson-breadcrumbs {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Contenedor Iframe del Vídeo (16:9) */
.video-wrapper {
  position: relative;
  padding-top: 56.25%;
  height: 0;
  border-radius: var(--border-radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-color);
}

.video-wrapper iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

/* Artículos del Curso y Fórmulas Teóricas */
.lesson-article {
  margin-top: var(--spacing-md);
  line-height: 1.7;
}

.lesson-article h3 {
  font-family: var(--font-family-title);
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-md);
  color: var(--color-primary);
}

.lesson-article h4 {
  font-family: var(--font-family-title);
  font-size: var(--font-size-lg);
  margin-top: var(--spacing-xl);
  margin-bottom: var(--spacing-sm);
  color: var(--color-primary);
}

.lesson-article p {
  color: var(--text-muted);
  margin-bottom: var(--spacing-md);
}

.formula-box {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  padding: var(--spacing-md);
  text-align: center;
  font-family: monospace;
  font-size: var(--font-size-md);
  margin: var(--spacing-md) 0;
  color: var(--text-main);
}

.formula-box.highlight {
  border-left: 3px solid var(--color-accent);
  background-color: hsla(45, 60%, 48%, 0.04);
}

.formula-box.success {
  border-left: 3px solid var(--color-success);
  background-color: hsla(142, 60%, 38%, 0.04);
  color: var(--color-success);
  font-weight: var(--font-weight-medium);
}

.lesson-list {
  padding-left: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
  color: var(--text-muted);
}

.lesson-list li {
  margin-bottom: var(--spacing-sm);
}

/* ==========================================================================
   Componente: Recursos de la Lección
   ========================================================================== */
.resources-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-md);
  margin-top: var(--spacing-md);
}

@media (min-width: 576px) {
  .resources-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.resource-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  padding: var(--spacing-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: all var(--transition-fast);
  cursor: pointer;
}

.resource-card:hover {
  background-color: var(--bg-primary);
  border-color: var(--color-accent);
}

.resource-info {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.resource-icon-wrapper {
  width: 40px;
  height: 40px;
  border-radius: var(--border-radius-md);
  display: flex;
  justify-content: center;
  align-items: center;
}

.resource-icon-wrapper.pdf {
  background-color: hsl(0, 72%, 97%);
  color: var(--color-danger);
}

.resource-icon-wrapper.xls {
  background-color: hsl(142, 60%, 95%);
  color: var(--color-success);
}

.resource-icon-wrapper svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

.resource-name {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--text-main);
}

.resource-size {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
}

.btn-download {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: var(--spacing-xs);
  border-radius: var(--border-radius-button); /* Rectangular con borde redondeado */
  transition: all var(--transition-fast);
}

.btn-download:hover {
  background-color: rgba(0, 0, 0, 0.05);
  color: var(--color-accent);
}

.btn-download svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

/* ==========================================================================
   Componente: Mis Notas Personales (Estilo Premium)
   ========================================================================== */
.notes-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  padding: var(--spacing-lg);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.notes-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.notes-title {
  font-family: var(--font-family-title);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  color: var(--color-primary);
}

.notes-status {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.notes-status-icon {
  width: 12px;
  height: 12px;
  fill: var(--color-success);
}

.notes-textarea {
  width: 100%;
  min-height: 120px;
  background-color: transparent;
  border: none;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-main);
  font-family: var(--font-family);
  font-size: var(--font-size-md);
  resize: none;
  outline: none;
  padding: var(--spacing-sm) 0;
  transition: border-color var(--transition-fast);
}

.notes-textarea:focus {
  border-bottom-color: var(--color-accent);
}

.notes-actions {
  display: flex;
  justify-content: flex-end;
}

.btn-export-notes {
  background-color: var(--color-primary);
  color: var(--text-inverse);
  border: none;
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--border-radius-button); /* Rectangular con borde redondeado */
  font-family: var(--font-family);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-export-notes:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

/* Columna Lateral Derecha (Progreso y Mentor CTA) */
.sidebar-right {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  overflow-y: auto;
}

.widget-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-md);
  box-shadow: var(--shadow-sm);
}

.widget-card h4 {
  font-family: var(--font-family-title);
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--spacing-md);
  color: var(--text-main);
  border-bottom: 1px solid var(--border-color);
  padding-bottom: var(--spacing-sm);
}

/* Barra de Progreso del Alumno */
.progress-bar-wrapper {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.progress-bar-track {
  height: 4px;
  background-color: var(--bg-primary);
  border-radius: var(--border-radius-circle);
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  background-color: var(--color-accent);
  box-shadow: var(--shadow-glow-accent);
}

.progress-text {
  font-size: var(--font-size-xs);
  color: var(--text-muted);
}

/* Listado de próximas mentorías */
.mentorship-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.mentorship-item {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--border-radius-sm);
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.mentorship-date {
  font-size: var(--font-size-xs);
  color: var(--color-accent);
  font-weight: var(--font-weight-semibold);
}

.mentorship-title {
  font-size: var(--font-size-xs);
  color: var(--text-main);
  font-weight: var(--font-weight-medium);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Tarjeta Destacada del Mentor de IA (Estilo Lujo Ampliado con Avatar Fotorrealista) */
.cta-mentor-card {
  background: linear-gradient(135deg, hsl(210, 20%, 10%), hsl(210, 20%, 6%));
  border: none;
  box-shadow: var(--shadow-md);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg); /* Más espacioso */
  color: var(--text-inverse);
  padding: var(--spacing-lg); /* Tarjeta más grande */
}

.cta-mentor-card h4 {
  color: var(--text-inverse);
  border-bottom-color: rgba(255, 255, 255, 0.08);
}

.cta-mentor-card .tutor-presentation {
  display: flex;
  align-items: center;
  gap: var(--spacing-md); /* Más separación */
}

.cta-mentor-card .tutor-avatar-frame {
  width: 72px; /* Más grande, muy visual */
  height: 72px; /* Más grande, muy visual */
  border-radius: var(--border-radius-md); /* Rectangular con bordes redondeados */
  border: 2px solid var(--color-accent);
  box-shadow: 0 0 15px var(--color-accent-glow);
  flex-shrink: 0;
  overflow: hidden;
  background-color: var(--color-primary);
}

.tutor-avatar-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.cta-mentor-card .tutor-name-info {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.cta-mentor-card .tutor-name-info h5 {
  font-family: var(--font-family-title);
  font-size: var(--font-size-md); /* Más grande */
  font-weight: var(--font-weight-bold);
  color: var(--text-inverse);
}

.cta-mentor-card .tutor-role {
  color: var(--color-accent);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
}

.cta-mentor-card .tutor-cta-text {
  font-size: var(--font-size-sm); /* Texto más grande */
  color: rgba(255, 255, 255, 0.8);
  line-height: 1.6;
}

.cta-mentor-card .btn-ask-mentor {
  width: 100%;
  background-color: var(--color-accent);
  color: var(--color-primary);
  border: none;
  padding: var(--spacing-md) var(--spacing-lg); /* Botón más llamativo */
  border-radius: var(--border-radius-button); /* Rectangular con borde redondeado */
  font-family: var(--font-family);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-bold);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  transition: all var(--transition-fast);
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.15);
}

.cta-mentor-card .btn-ask-mentor:hover {
  background-color: var(--color-accent-hover);
  transform: translateY(-1px);
}

.cta-mentor-card .btn-ask-mentor svg {
  width: 18px;
  height: 18px;
  fill: currentColor;
}

/* ==========================================================================
   WIDGET DE CHAT FLOTANTE (MENTOR DE IA - ESTILO CLARO PREMIUM)
   ========================================================================== */
.floating-chat-widget {
  position: fixed;
  bottom: 90px;
  right: 30px;
  width: 380px;
  height: 520px;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
  z-index: 1000;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  
  /* Animación de apertura */
  transform: translateY(30px);
  opacity: 0;
  pointer-events: none;
  transition: transform var(--transition-normal), opacity var(--transition-normal);
}

.floating-chat-widget.active {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}

.chat-widget-header {
  height: 60px;
  background: linear-gradient(90deg, hsl(210, 20%, 10%), hsl(210, 20%, 6%));
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 var(--spacing-md);
  flex-shrink: 0;
  color: var(--text-inverse);
}

.widget-tutor-profile {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.widget-avatar {
  width: 36px;
  height: 36px;
  border-radius: var(--border-radius-circle);
  border: 1px solid var(--color-accent);
  background: var(--color-accent);
  flex-shrink: 0;
  overflow: hidden;
}

.widget-tutor-info {
  display: flex;
  flex-direction: column;
}

.widget-tutor-name {
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  color: var(--text-inverse);
}

.widget-tutor-status {
  font-size: 10px;
  color: var(--color-accent);
}

.widget-controls {
  display: flex;
  gap: var(--spacing-xs);
}

.widget-btn {
  background: transparent;
  border: none;
  color: rgba(255, 255, 255, 0.6);
  width: 28px;
  height: 28px;
  border-radius: var(--border-radius-circle);
  display: flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

.widget-btn:hover {
  background-color: rgba(255, 255, 255, 0.08);
  color: var(--text-inverse);
}

.widget-btn svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
}

.chat-widget-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background-color: var(--bg-primary);
}

/* Chat message container styling */
.chat-window-container {
  flex: 1;
  overflow-y: auto;
  padding: var(--spacing-md);
  scroll-behavior: smooth;
}

.messages-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  min-height: 100%;
}

.chat-message {
  display: flex;
  gap: var(--spacing-sm);
  width: 100%;
  animation: slide-up 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.chat-message.user {
  flex-direction: row-reverse;
}

.chat-message .message-avatar {
  width: 28px;
  height: 28px;
  border-radius: var(--border-radius-circle);
  flex-shrink: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: var(--border-color);
  color: var(--text-muted);
  overflow: hidden;
}

.chat-message.agent .message-avatar {
  background-color: var(--color-primary);
  color: var(--text-inverse);
  border: 1px solid var(--color-accent);
}

.chat-message.agent .message-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.chat-message .message-avatar svg {
  width: 14px;
  height: 14px;
  fill: currentColor;
}

.chat-message .message-bubble {
  max-width: 80%;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--border-radius-md);
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  word-break: break-word;
  line-height: 1.5;
  font-size: var(--font-size-sm);
}

.chat-message.agent .message-bubble {
  background-color: var(--bg-agent-bubble);
  border: 1px solid var(--border-color);
  border-top-left-radius: 0;
  color: var(--text-main);
  box-shadow: var(--shadow-sm);
}

.chat-message.user .message-bubble {
  background-color: var(--bg-user-bubble);
  border: 1px solid hsla(45, 60%, 48%, 0.15);
  border-top-right-radius: 0;
  color: var(--text-main);
}

.chat-message .message-time {
  font-size: 10px;
  color: var(--text-muted);
  align-self: flex-end;
}

/* Chat Input inside widget */
.chat-widget-body chat-input {
  border-top: 1px solid var(--border-color);
  padding: var(--spacing-sm);
  background-color: var(--bg-secondary);
  display: block;
}

.chat-widget-body chat-input .input-wrapper {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-button);
  padding: 6px var(--spacing-sm);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  width: 100%;
}

.chat-widget-body chat-input .input-wrapper:focus-within {
  border-color: var(--border-accent);
  box-shadow: var(--shadow-glow);
}

.chat-widget-body chat-input #chatTextarea {
  flex: 1;
  background: transparent;
  border: none;
  resize: none;
  outline: none;
  font-family: var(--font-family);
  font-size: var(--font-size-sm);
  color: var(--text-main);
  padding: 4px 0;
  max-height: 100px;
  line-height: 1.4;
}

.chat-widget-body chat-input #chatTextarea::placeholder {
  color: var(--text-muted);
  opacity: 0.7;
}

.chat-widget-body chat-input .send-button {
  background-color: var(--color-primary);
  color: var(--text-inverse);
  width: 32px;
  height: 32px;
  min-width: 32px;
  border: none;
  border-radius: var(--border-radius-button);
  display: flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.chat-widget-body chat-input .send-button:hover {
  background-color: var(--color-primary-hover);
}

.chat-widget-body chat-input .send-button svg {
  width: 16px;
  height: 16px;
  fill: currentColor;
  transform: translate(1px, 0);
}

/* Burbuja Flotante Alternativa */
.floating-chat-bubble {
  position: fixed;
  bottom: 24px;
  right: 30px;
  width: 54px;
  height: 54px;
  border-radius: var(--border-radius-circle);
  background: var(--color-primary);
  border: none;
  cursor: pointer;
  display: flex;
  justify-content: center;
  align-items: center;
  box-shadow: var(--shadow-lg);
  z-index: 999;
  transition: all var(--transition-normal);
  color: var(--text-inverse);
}

.floating-chat-bubble:hover {
  transform: scale(1.05);
}

.floating-chat-bubble.hidden {
  transform: scale(0);
  opacity: 0;
  pointer-events: none;
}

.floating-chat-bubble svg {
  width: 24px;
  height: 24px;
  fill: currentColor;
}

.bubble-notification-dot {
  position: absolute;
  top: 0;
  right: 0;
  width: 10px;
  height: 10px;
  border-radius: var(--border-radius-circle);
  background-color: var(--color-accent);
  border: 2px solid var(--bg-secondary);
}

/* ==========================================================================
   VISTA DE ADMINISTRACIÓN (ESTILO CLARO CORPORATIVO)
   ========================================================================== */
.admin-layout {
  display: grid;
  grid-template-columns: 1fr;
  width: 100%;
  max-width: 100%; /* Ajuste a pantalla completa */
  margin: 0;
  padding: var(--spacing-md) var(--spacing-xl); /* Padding generoso */
  gap: var(--spacing-lg);
  box-sizing: border-box;
}

@media (min-width: 768px) {
  .admin-layout {
    grid-template-columns: 240px 1fr;
    height: calc(100vh - 70px);
    overflow: hidden;
  }
}

.admin-sidebar {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-md);
  box-shadow: var(--shadow-sm);
}

.admin-menu {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.admin-menu-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  border-radius: var(--border-radius-sm);
  color: var(--text-muted);
  cursor: pointer;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  transition: all var(--transition-fast);
}

.admin-menu-item:hover {
  background-color: var(--bg-primary);
  color: var(--text-main);
}

.admin-menu-item.active {
  background-color: hsl(45, 90%, 92%);
  color: var(--color-primary);
  border-left: 3px solid var(--color-accent);
}

.admin-content-panel {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-xl);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-sm);
}

.admin-tab-content h3 {
  font-family: var(--font-family-title);
  font-size: var(--font-size-xl);
  color: var(--color-primary);
  margin-bottom: 2px;
}

.tab-subtitle {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
  margin-bottom: var(--spacing-lg);
}

/* Formularios de Configuración */
.admin-form {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  max-width: 600px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.form-group-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-md);
}

@media (min-width: 576px) {
  .form-group-row {
    grid-template-columns: 1fr 1fr;
  }
}

.admin-form label {
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-bold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-main);
}

.admin-form input,
.admin-form select {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  padding: var(--spacing-sm) var(--spacing-md);
  color: var(--text-main);
  font-family: var(--font-family);
  font-size: var(--font-size-sm);
  outline: none;
  transition: all var(--transition-fast);
}

.admin-form input:focus,
.admin-form select:focus {
  border-color: var(--border-accent);
  background-color: var(--bg-secondary);
}

.btn-admin-save {
  background-color: var(--color-primary);
  color: var(--text-inverse);
  border: none;
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--border-radius-button); /* Rectangular con borde redondeado */
  font-family: var(--font-family);
  font-weight: var(--font-weight-semibold);
  cursor: pointer;
  transition: all var(--transition-fast);
  align-self: flex-start;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.btn-admin-save:hover:not(:disabled) {
  opacity: 0.9;
}

.btn-admin-save:disabled {
  background-color: var(--border-color);
  color: var(--text-muted);
  cursor: not-allowed;
}

.btn-admin-secondary {
  background-color: transparent;
  border: 1px solid var(--color-primary);
  color: var(--color-primary);
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--border-radius-button); /* Rectangular con borde redondeado */
  font-family: var(--font-family);
  font-weight: var(--font-weight-semibold);
  cursor: pointer;
  transition: all var(--transition-fast);
  align-self: flex-start;
}

.btn-admin-secondary:hover {
  background-color: rgba(0,0,0,0.03);
}

/* Área Drag and Drop (Upload) */
.upload-section {
  border-top: 1px solid var(--border-color);
  padding-top: var(--spacing-md);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.dropzone-area {
  background-color: var(--bg-primary);
  border: 2px dashed var(--border-color);
  border-radius: var(--border-radius-md);
  padding: var(--spacing-xl) var(--spacing-md);
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-sm);
}

.dropzone-area.dragover {
  border-color: var(--border-accent);
  background-color: hsla(45, 60%, 48%, 0.05);
}

.upload-icon {
  width: 40px;
  height: 40px;
  fill: var(--text-muted);
}

.dropzone-area:hover .upload-icon {
  fill: var(--color-accent);
}

.dropzone-text {
  font-size: var(--font-size-sm);
  color: var(--text-muted);
}

/* Sliders */
.sliders-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-md);
}

.slider-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.slider-group label {
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  color: var(--text-muted);
}

.slider-group input[type="range"] {
  accent-color: var(--color-accent);
  cursor: pointer;
}

/* Consola de Logs (Consola de desarrollador tipo Terminal Oscura) */
.console-box {
  background-color: hsl(220, 30%, 3%);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  overflow: hidden;
  height: 380px;
  display: flex;
  flex-direction: column;
}

@media (min-width: 992px) {
  .console-box {
    height: 450px;
  }
}

.console-header {
  height: 40px;
  background-color: hsl(220, 20%, 8%);
  border-bottom: 1px solid rgba(255,255,255,0.05);
  display: flex;
  align-items: center;
  padding: 0 var(--spacing-md);
  gap: 6px;
}

.console-dot {
  width: 8px;
  height: 8px;
  border-radius: var(--border-radius-circle);
}

.console-dot.red { background-color: #ff5f56; }
.console-dot.yellow { background-color: #ffbd2e; }
.console-dot.green { background-color: #27c93f; }

.console-title {
  font-family: monospace;
  font-size: var(--font-size-xs);
  color: var(--text-muted);
  margin-left: var(--spacing-sm);
}

.console-body {
  flex: 1;
  padding: var(--spacing-md);
  overflow-y: auto;
  font-family: 'Courier New', Courier, monospace;
  font-size: 13px;
  line-height: 1.6;
  color: #a8ffb2;
}

.console-line {
  margin-bottom: 6px;
  white-space: pre-wrap;
  word-break: break-all;
}

.console-line.system { color: #729fcf; }
.console-line.error { color: #ef2929; }
.console-line.success { color: #4e9a06; }

/* Botones de Reintento dentro del Chat */
.retry-container {
  margin-top: var(--spacing-sm);
  display: flex;
  justify-content: flex-start;
}

.btn-retry {
  background-color: var(--color-primary);
  color: var(--text-inverse);
  border: 1px solid var(--border-color);
  padding: var(--spacing-xs) var(--spacing-md);
  border-radius: var(--border-radius-button); /* Rectangular con borde redondeado */
  font-family: var(--font-family);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  transition: all var(--transition-fast);
}

.btn-retry:hover {
  background-color: var(--color-primary-hover);
}

/* Animaciones */
@keyframes slide-up {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}