:root {
  font-family: 'Raleway', 'Gotham', -apple-system, BlinkMacSystemFont, sans-serif;
  line-height: 1.6;
  font-weight: 400;
  
  /* Color Palette */
  --dark-gray: #494949;
  --red: #e42935;
  --light-blue: #65a0af;
  --bright-blue: #4bb3d4;
  --white: #ffffff;
  
  /* Functional Colors */
  --text-primary: var(--dark-gray);
  --text-accent: var(--red);
  --text-secondary: var(--bright-blue);
  --bg-primary: var(--white);
  --bg-secondary: var(--light-blue);
  --border-color: rgba(73, 73, 73, 0.2);
  --delete-red: var(--red);
}

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

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  display: flex;
  margin: 0;
  padding: 0;
}

.container {
  width: 100%;
  margin: 0;
  padding: 0;
  height: 100vh;
}

.backlog-container {
  background: var(--bg-primary);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  height: 100vh;
  border: none;
}

.header {
  background: var(--bg-primary);
  padding: 1.25rem 2rem;
  border-bottom: 1px solid var(--border-color);
  position: relative;
  z-index: 10002;
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.logo-container {
  flex-shrink: 0;
  height: 60px;
  display: flex;
  align-items: center;
  padding: 0.5rem 1rem;
  border-radius: 8px;
}

.logo-image {
  height: 100%;
  width: auto;
  object-fit: contain;
  display: block;
  max-width: none;
}

/* Configuration group: label + duration + checkbox */
.toolbar-config-group {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.toolbar-config-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-primary);
  opacity: 0.8;
}

.toolbar-config-items {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.duration-display {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--text-primary);
}

.duration-display.disabled {
  opacity: 0.6;
}

.link-btn {
  background: none;
  border: none;
  color: var(--bright-blue);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  padding: 0;
  text-decoration: underline;
}

.link-btn:hover {
  color: var(--light-blue);
}

#duration-change-btn:disabled,
.link-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.inline-tooltip {
  position: relative;
  display: inline-flex;
  align-items: center;
  color: var(--text-primary);
  opacity: 0.7;
}

.inline-tooltip .tooltiptext {
  visibility: hidden;
  width: 260px;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-size: 0.8rem;
  text-align: left;
  border-radius: 6px;
  padding: 10px 12px;
  position: absolute;
  z-index: 10;
  bottom: 125%;
  left: 50%;
  transform: translateX(-50%);
  opacity: 0;
  transition: opacity 0.2s;
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
  border: 1px solid var(--border-color);
  line-height: 1.4;
}

.inline-tooltip:hover .tooltiptext {
  visibility: visible;
  opacity: 1;
}

.toolbar-divider {
  width: 1px;
  align-self: stretch;
  min-height: 32px;
  background: var(--border-color);
  flex-shrink: 0;
}

/* Action buttons: flex row, one primary, rest secondary/ghost */
.action-buttons {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  position: relative;
  z-index: 10003;
}

.action-buttons .action-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  white-space: nowrap;
  min-height: 40px;
}

.action-buttons .dropdown {
  display: inline-block;
}

.action-buttons .dropdown .action-btn {
  width: auto;
}

.context-toolbar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.context-toolbar .action-btn,
.context-toolbar .dropdown .action-btn {
  width: auto;
}

/* Button hierarchy */
.action-btn-primary {
  background: var(--bright-blue) !important;
  color: var(--white) !important;
  border-color: var(--bright-blue) !important;
}

.action-btn-primary:hover:not(:disabled) {
  background: var(--light-blue) !important;
  border-color: var(--light-blue) !important;
  color: var(--white) !important;
}

.action-btn-secondary {
  background: var(--bg-primary) !important;
  color: var(--text-primary) !important;
  border: 1px solid var(--border-color) !important;
}

.action-btn-secondary:hover:not(:disabled) {
  background: rgba(101, 160, 175, 0.08) !important;
  border-color: var(--bright-blue) !important;
  color: var(--text-primary) !important;
}

.action-btn-ghost {
  background: transparent !important;
  border-color: transparent !important;
  color: var(--text-primary) !important;
}

.action-btn-ghost:hover:not(:disabled) {
  background: rgba(73, 73, 73, 0.06) !important;
  color: var(--text-primary) !important;
}

/* Model and Duration Selectors */
.model-selector, .sprint-duration-selector {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: var(--bg-secondary);
  padding: 0.5rem 1rem;
  border-radius: 8px;
  transition: all 0.2s ease;
}

.model-selector:hover, .sprint-duration-selector:hover {
  background: rgba(101, 160, 175, 0.2);
}

.model-select, .duration-select {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 0.5rem;
  border-radius: 6px;
  font-size: 0.875rem;
  min-width: 0;
  flex: 1;
  max-width: 100%;
  cursor: pointer;
  transition: all 0.2s ease;
}

.model-select.model-input {
  cursor: text;
  min-width: 14rem;
}

.model-select:hover, .duration-select:hover {
  border-color: var(--bright-blue);
}

.model-selector label, .sprint-duration-selector label {
  font-size: 0.875rem;
  color: var(--text-primary);
  font-weight: 500;
  white-space: nowrap;
}

@media (max-width: 1200px) {
  .header-content {
    flex-direction: column;
    align-items: flex-start;
  }
  .logo-container { margin-bottom: 0.5rem; }
  .toolbar-divider { display: none; }
}

@media (max-width: 768px) {
  .header { padding: 1rem; }
  .toolbar-config-group { flex-direction: column; align-items: flex-start; }
  .toolbar-config-items { flex-wrap: wrap; }
  .action-buttons { flex-wrap: wrap; }
  .welcome-panel { padding: 1.5rem 1rem; margin: 2rem auto 3rem; }
  .workflow-steps { flex-direction: column; gap: 0.5rem; }
}

.header-text h1 {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  margin-bottom: 0.25rem;
  color: var(--text-accent);
  position: relative;
}

.header-text h1::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 0;
  width: 60px;
  height: 3px;
  background-color: var(--text-accent);
}

.header-text p {
  color: var(--text-primary);
  font-size: 1rem;
  margin-top: 1rem;
}

/* Estilos para las acciones y botones */
.action-btn {
  background: var(--bg-primary);
  color: var(--text-primary);
  border: 2px solid var(--bright-blue);
  padding: 0.75rem 1.25rem;
  border-radius: 8px;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  white-space: nowrap;
  position: relative;
  z-index: 10004; /* Ensure button is clickable above overlay */
}

.action-btn:hover:not(:disabled) {
  background: var(--bright-blue);
  color: var(--white);
}

.action-btn svg {
  color: currentColor;
}

.action-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  background-color: var(--border-color) !important;
  border-color: var(--border-color) !important;
  color: var(--text-primary) !important;
}

.action-btn:disabled svg {
  opacity: 0.5;
}

.upload-container {
  position: relative;
  display: flex;
  align-items: center;
}

.analyze-option-label {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8125rem;
  color: var(--text-primary);
  cursor: pointer;
  white-space: nowrap;
}

.analyze-option-label input[type="checkbox"] {
  cursor: pointer;
}

/* Estilos para el contenido principal */
.backlog-content {
  flex: 1;
  overflow-y: auto;
  padding: 2rem 2rem 3rem;
  background: var(--bg-primary);
}

/* Panel de bienvenida: max-width, vertical rhythm */
.welcome-panel {
  background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
  border-radius: 16px;
  padding: 2.5rem 2rem;
  text-align: center;
  margin: 3rem auto 4rem;
  max-width: 680px;
  border: none;
  box-shadow: 0 8px 32px rgba(101, 160, 175, 0.1);
}

.welcome-panel h2 {
  color: var(--text-accent);
  margin-bottom: 0.75rem;
  font-size: 1.75rem;
  font-weight: 700;
  position: relative;
  display: inline-block;
}

.welcome-panel h2::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 4px;
  background-color: var(--text-accent);
  border-radius: 2px;
}

.welcome-subtitle {
  color: var(--text-primary);
  margin-bottom: 2rem;
  font-size: 1rem;
  line-height: 1.5;
}

/* Dropzone: main CTA, clearer border, feedback states */
.file-upload-zone {
  border: 2px dashed var(--bright-blue);
  border-radius: 12px;
  padding: 2rem 1.5rem;
  margin-top: 1.5rem;
  cursor: pointer;
  transition: border-color 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
  background: rgba(75, 179, 212, 0.04);
  position: relative;
}

.file-upload-zone:hover {
  border-color: var(--light-blue);
  background: rgba(101, 160, 175, 0.08);
  box-shadow: 0 0 0 3px rgba(75, 179, 212, 0.1);
}

.file-upload-zone.drag-over {
  border-color: var(--bright-blue);
  background: rgba(75, 179, 212, 0.12);
  box-shadow: 0 0 0 3px rgba(75, 179, 212, 0.2);
}

.file-upload-zone.uploading .dropzone-icon,
.file-upload-zone.uploading .dropzone-instruction,
.file-upload-zone.uploading .btn-select-file {
  opacity: 0.5;
  pointer-events: none;
}

.file-upload-zone .dropzone-icon,
.file-upload-zone svg.dropzone-icon {
  color: var(--bright-blue);
  margin-bottom: 1rem;
  display: block;
}

.dropzone-instruction {
  font-size: 1rem;
  color: var(--text-primary);
  margin-bottom: 1rem;
  font-weight: 500;
}

.btn-select-file {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1.25rem;
  background: var(--text-accent);
  color: var(--white);
  border: none;
  border-radius: 8px;
  font-size: 0.9375rem;
  font-weight: 500;
  cursor: pointer;
  margin-bottom: 0.75rem;
  transition: transform 0.2s, box-shadow 0.2s;
}

.btn-select-file:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(228, 41, 53, 0.25);
}

.dropzone-formats {
  font-size: 0.8125rem;
  color: var(--text-primary);
  opacity: 0.75;
}

.dropzone-progress {
  margin-top: 1rem;
  text-align: center;
}

.dropzone-progress .progress-bar {
  width: 100%;
  height: 6px;
  background: var(--border-color);
  border-radius: 3px;
  overflow: hidden;
  margin-bottom: 0.5rem;
}

.dropzone-progress .progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--bright-blue), var(--text-accent));
  border-radius: 3px;
  transition: width 0.3s ease;
  width: 0%;
}

.dropzone-progress .progress-label {
  font-size: 0.875rem;
  color: var(--text-primary);
}

.dropzone-success {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-top: 0.5rem;
  font-size: 0.9375rem;
  color: var(--text-primary);
}

.dropzone-success .link-btn {
  font-size: 0.875rem;
}

/* Workflow steps under card */
.workflow-steps {
  list-style: none;
  counter-reset: step;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem 2rem;
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border-color);
  font-size: 0.9375rem;
  color: var(--text-primary);
  opacity: 0.9;
}

.workflow-steps li {
  counter-increment: step;
}

.workflow-steps li::before {
  content: counter(step) ". ";
  font-weight: 600;
  color: var(--bright-blue);
  margin-right: 0.25rem;
}

.text-sm {
  font-size: 0.875rem;
  color: var(--text-primary);
}

/* Estilos para el contenedor de análisis de archivos */
.analyze-container {
  margin-top: 1.5rem;
  padding: 1.5rem;
  background: var(--bg-primary);
  border-radius: 12px;
  border: 1px solid var(--border-color);
  text-align: center;
}

.uploaded-file-info {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

#uploaded-filename {
  font-size: 1rem;
  color: var(--text-primary);
  font-weight: 500;
}

.primary-btn {
  background: var(--text-accent);
  color: var(--white);
  border: none;
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin: 0 auto;
}

.primary-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(228, 41, 53, 0.3);
}

.primary-btn:active {
  transform: translateY(0);
}

.primary-btn svg {
  filter: drop-shadow(0 1px 1px rgba(0,0,0,0.1));
}

.primary-btn:disabled {
  opacity: 0.7;
  cursor: not-allowed;
  background: var(--border-color);
  transform: none;
  box-shadow: none;
}

/* Indicador de estado de archivo */
.file-status-indicator {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background-color: rgba(75, 192, 192, 0.2);
  color: #4bc0c0;
  padding: 0.4rem 0.75rem;
  border-radius: 4px;
  font-size: 0.875rem;
  font-weight: 500;
  margin-left: 0.5rem;
  border: 1px solid rgba(75, 192, 192, 0.3);
}

.file-status-indicator svg {
  color: #4bc0c0;
}

/* Estilos para la tabla de backlog */
.backlog-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  margin-bottom: 1rem;
  background: var(--bg-primary);
}

.backlog-table th {
  background: var(--bg-secondary);
  color: var(--text-primary);
  padding: 1rem;
  text-align: left;
  border: none;
  font-size: 1rem;
  font-weight: 600;
  position: sticky;
  top: 0;
  z-index: 10;
}

.backlog-table td {
  padding: 1rem;
  border-bottom: 1px solid var(--border-color);
  background-color: transparent !important;
  font-size: 0.9rem;
  line-height: 1.5;
}

/* Sprint Column Styles */
.backlog-table td:nth-child(9) {
  font-weight: 600;
  color: var(--text-accent);
}

/* Epic Column Styles */
.backlog-table td:first-child {
  font-weight: 600;
  color: var(--text-secondary);
}

/* Feature Column Styles */
.backlog-table td:nth-child(2) {
  color: var(--light-blue);
  font-weight: 500;
}

/* Requirement Number Styles */
.backlog-table td:nth-child(3) {
  font-weight: 700;
  color: var(--text-accent);
}

/* Estilos para la leyenda de épicas */
.epic-legend {
  margin-top: 1.5rem;
  padding: 1rem;
  background: var(--bg-primary);
  border-radius: 8px;
  border: 1px solid var(--border-color);
}

.epic-legend h4 {
  margin-bottom: 0.75rem;
  font-size: 1rem;
  font-weight: 500;
  color: #4bc0c0;
  text-align: center;
}

.epic-colors {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
}

.epic-color-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem;
  background: rgba(0, 0, 0, 0.2);
  border-radius: 4px;
  min-width: 200px;
  margin-bottom: 0.5rem;
}

.color-box {
  width: 16px;
  height: 16px;
  border-radius: 4px;
  border: 1px solid var(--border-color);
  flex-shrink: 0;
}

.epic-name {
  font-size: 0.875rem;
  font-weight: 500;
}

/* Manejo de filas y agrupación por epic */
.new-epic-start {
  border-top: 2px solid var(--border-color);
}

/* Estilos para el dropdown de exportación */
.dropdown {
  position: relative;
  display: inline-block;
}

.dropdown-content {
  display: none;
  position: absolute;
  right: 0;
  top: calc(100% + 5px);
  background-color: var(--bg-primary);
  min-width: 120px;
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.5);
  z-index: 9999;
  border: 1px solid var(--border-color);
  border-radius: 6px;
}

#export-btn {
  cursor: pointer;
}

.dropdown-content button {
  width: 100%;
  padding: 10px 15px;
  text-align: left;
  background: var(--bg-primary);
  border: none;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-primary);
  cursor: pointer;
  font-size: 14px;
  display: block;
}

.dropdown-content button:last-child {
  border-bottom: none;
}

.dropdown-content button:hover {
  background-color: var(--border-color);
}

.dropdown button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  background-color: var(--border-color) !important;
}

/* Añadir estilos temporales para depuración */
.dropdown-content.debug {
  display: block !important;
  position: absolute;
  border: 2px solid red;
}

/* Estilos para el modo de edición */
.editable {
  background-color: var(--bg-primary) !important;
  outline: 1px dashed var(--border-color);
  padding: 0.5rem !important;
}

.editable:focus {
  background-color: var(--bg-primary) !important;
  outline: 2px solid var(--text-primary);
}

.delete-row-btn {
  background: transparent;
  border: none;
  color: var(--delete-red);
  font-size: 1.2rem;
  cursor: pointer;
  padding: 2px 6px;
  border-radius: 4px;
  transition: all 0.2s ease;
}

.delete-row-btn:hover {
  color: var(--white);
  background-color: rgba(255, 68, 68, 0.1);
  transform: scale(1.2);
}

/* Scrollbar personalizado */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-primary);
}

/* Estilos para loading y feedback */
.loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 1.5rem;
  gap: 1rem;
}

.loading-dots-container {
  display: flex;
  gap: 0.5rem;
  justify-content: center;
  align-items: center;
  flex-direction: row; /* Asegurar disposición horizontal */
}

.loading-message {
  font-size: 0.875rem;
  color: var(--text-primary);
  text-align: center;
  margin-top: 0.5rem;
  font-weight: 500;
  opacity: 0.8;
}

/* Animación mejorada para los puntos de carga */
.loading-dot {
  width: 10px;
  height: 10px;
  background: #e42935; /* Rojo sólido */
  border-radius: 50%;
  animation: loading-bounce 1.4s infinite ease-in-out both;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.loading-dot:nth-child(1) { animation-delay: -0.32s; }
.loading-dot:nth-child(2) { animation-delay: -0.16s; }
.loading-dot:nth-child(3) { animation-delay: 0s; }

@keyframes loading-bounce {
  0%, 80%, 100% {
    transform: scale(0.8) translateY(0);
    opacity: 0.6;
  }
  40% {
    transform: scale(1.2) translateY(-10px);
    opacity: 1;
  }
}

/* Estilos para la columna sortable */
.sortable {
  cursor: pointer;
  user-select: none;
}

.sortable:hover {
  background-color: var(--border-color);
}

/* Estilos para mensajes de estado */
.file-status {
  margin-top: 1rem;
  padding: 0.75rem 1rem;
  border-radius: 6px;
  font-size: 0.875rem;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  display: none;
}

.file-status.success {
  background-color: rgba(75, 192, 192, 0.2);
  color: #4bc0c0;
  display: block;
}

.file-status.error {
  background-color: rgba(255, 99, 132, 0.2);
  color: #ff6384;
  display: block;
}

/* Estilos para el selector de modelo */
.model-selector {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  position: relative;
  margin-right: 1rem;
}

.model-selector label, .sprint-duration-selector label {
  font-size: 0.875rem;
  color: var(--text-primary);
}

.model-select, .duration-select {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 0.5rem;
  border-radius: 6px;
  font-size: 0.875rem;
  min-width: 0;
  flex: 1;
  max-width: 100%;
  cursor: pointer;
  transition: all 0.2s ease;
}

.model-select:hover, .duration-select:hover {
  border-color: var(--text-primary);
}

.duration-select:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  background-color: var(--bg-primary);
}

/* Estilos para el selector de duración del proyecto */
.sprint-duration-selector {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  position: relative;
  margin-right: 1rem;
  transition: opacity 0.3s ease;
}

.sprint-duration-selector.disabled {
  opacity: 0.6;
  pointer-events: none;
}

.sprint-duration-selector.disabled select {
  background-color: var(--border-color);
  cursor: not-allowed;
}

.sprint-duration-selector.disabled::after {
  content: "Analiza el BAN primero";
  position: absolute;
  bottom: -25px;
  left: 0;
  background: var(--bg-primary);
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 11px;
  white-space: nowrap;
  color: var(--text-primary);
  opacity: 0;
  transition: opacity 0.3s ease;
  z-index: 10;
}

.sprint-duration-selector.disabled:hover::after {
  opacity: 1;
}

/* Tooltip para información de modelos y duración */
.model-info-tooltip, .duration-info-tooltip {
  position: relative;
  cursor: pointer;
  display: flex;
  align-items: center;
  color: var(--text-primary);
}

.model-info-tooltip .tooltiptext, .duration-info-tooltip .tooltiptext {
  visibility: hidden;
  width: 300px;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  text-align: center;
  border-radius: 6px;
  padding: 12px;
  position: absolute;
  z-index: 1;
  bottom: 125%;
  left: 50%;
  transform: translateX(-50%);
  opacity: 0;
  transition: opacity 0.3s;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border-color);
  font-size: 0.8rem;
  line-height: 1.5;
}

.model-info-tooltip:hover .tooltiptext, .duration-info-tooltip:hover .tooltiptext {
  visibility: visible;
  opacity: 1;
}

.model-info-tooltip .tooltiptext::after, .duration-info-tooltip .tooltiptext::after {
  content: "";
  position: absolute;
  top: 100%;
  left: 50%;
  margin-left: -5px;
  border-width: 5px;
  border-style: solid;
  border-color: var(--bg-primary) transparent transparent transparent;
}

/* Estilos para la notificación de cambio de duración */
.duration-change-notification {
  position: fixed;
  top: 20px;
  right: 20px;
  background: rgba(75, 192, 192, 0.95);
  color: white;
  padding: 12px 20px;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
  display: flex;
  align-items: center;
  gap: 10px;
  z-index: 9999;
  font-weight: 500;
  transform: translateY(-20px);
  opacity: 0;
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.duration-change-notification.visible {
  transform: translateY(0);
  opacity: 1;
}

.duration-change-notification svg {
  flex-shrink: 0;
}

/* Estilos para la notificación de ordenamiento topológico */
.topological-sort-notification {
  position: fixed;
  top: 20px;
  right: 20px;
  background: linear-gradient(135deg, #4bc0c0, #3ca9ad);
  color: white;
  padding: 16px 24px;
  border-radius: 12px;
  box-shadow: 0 8px 32px rgba(75, 192, 192, 0.4);
  display: flex;
  align-items: center;
  gap: 12px;
  z-index: 9999;
  font-weight: 500;
  transform: translateX(100%);
  opacity: 0;
  transition: transform 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55), opacity 0.3s ease;
  max-width: 350px;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.topological-sort-notification.visible {
  transform: translateX(0);
  opacity: 1;
}

.topological-sort-notification svg {
  flex-shrink: 0;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
}

.notification-content {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.notification-content strong {
  font-size: 0.95rem;
  font-weight: 600;
  color: white;
}

.notification-content span {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.9);
  line-height: 1.3;
}

/* Estilos para los puntos rojos de carga */
.loading-dots {
  display: inline-flex;
  gap: 4px;
  margin-left: 8px;
  align-items: center;
  flex-direction: row; /* Asegurar disposición horizontal */
}

.loading-dots .dot {
  width: 6px;
  height: 6px;
  background-color: #e42935; /* Rojo sólido */
  border-radius: 50%;
  animation: pulse 1.5s infinite ease-in-out;
}

.loading-dots .dot:nth-child(2) {
  animation-delay: 0.5s;
}

.loading-dots .dot:nth-child(3) {
  animation-delay: 1s;
}

@keyframes pulse {
  0%, 100% {
    transform: scale(0.8);
    opacity: 0.5;
  }
  50% {
    transform: scale(1.2);
    opacity: 1;
  }
}

/* Estilos para la fila de totales */
.totals-row {
  background-color: var(--bg-secondary) !important;
  font-weight: 500;
  border-top: 2px solid var(--border-color);
}

.totals-row td {
  padding: 1rem;
  color: var(--text-primary);
}

.totals-row #total-effort {
  font-weight: 700;
  color: var(--text-accent);
}

/* Resaltar visualmente las filas ordenadas topológicamente */
.backlog-table tr[data-has-dependencies="true"] {
  border-left: 3px solid var(--bright-blue);
  position: relative;
}

.backlog-table tr[data-has-dependencies="true"]::before {
  content: "📊";
  position: absolute;
  left: -15px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 0.8rem;
  opacity: 0.7;
}

/* Tooltip para explicar el ordenamiento topológico */
.topological-sort-info {
  position: relative;
  display: inline-block;
  margin-left: 8px;
  cursor: help;
}

.topological-sort-info::after {
  content: "Los requerimientos han sido ordenados automáticamente respetando sus dependencias usando algoritmo topológico";
  position: absolute;
  bottom: 125%;
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg-primary);
  color: var(--text-primary);
  padding: 8px 12px;
  border-radius: 6px;
  font-size: 0.75rem;
  white-space: nowrap;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
  border: 1px solid var(--border-color);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s, visibility 0.3s;
  z-index: 1000;
  max-width: 250px;
  white-space: normal;
  line-height: 1.4;
}

.topological-sort-info:hover::after {
  opacity: 1;
  visibility: visible;
}

/* Estilos para indicadores de progreso mejorados */
.progress-container {
  background: var(--bg-secondary);
  border-radius: 8px;
  padding: 1rem;
  margin: 1rem 0;
  display: none;
}

.progress-container.active {
  display: block;
}

.progress-bar {
  width: 100%;
  height: 6px;
  background: var(--border-color);
  border-radius: 3px;
  overflow: hidden;
  position: relative;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--bright-blue), var(--text-accent));
  border-radius: 3px;
  transition: width 0.3s ease;
  position: relative;
}

.progress-fill::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
  animation: progress-shimmer 2s infinite;
}

@keyframes progress-shimmer {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

/* Responsividad para las notificaciones */
@media (max-width: 768px) {
  .topological-sort-notification,
  .duration-change-notification {
    top: 10px;
    right: 10px;
    left: 10px;
    max-width: none;
    padding: 12px 16px;
  }
  
  .notification-content strong {
    font-size: 0.9rem;
  }
  
  .notification-content span {
    font-size: 0.8rem;
  }
}

/* Estilos para el modal de error de análisis */
.analysis-error-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 10000;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.analysis-error-modal.visible {
  opacity: 1;
  visibility: visible;
}

.error-modal-content {
  background: white;
  border-radius: 12px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  max-width: 500px;
  width: 90%;
  max-height: 80vh;
  overflow-y: auto;
  transform: scale(0.9);
  transition: transform 0.3s ease;
}

.analysis-error-modal.visible .error-modal-content {
  transform: scale(1);
}

.error-modal-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 24px 24px 16px 24px;
  border-bottom: 1px solid #f0f0f0;
}

.error-modal-header .error-icon {
  color: var(--red);
  flex-shrink: 0;
}

.error-modal-header h3 {
  margin: 0;
  color: var(--red);
  font-size: 18px;
  font-weight: 600;
}

.error-modal-body {
  padding: 20px 24px;
}

.error-modal-body p {
  margin: 0;
  color: var(--text-primary);
  line-height: 1.5;
  text-align: center;
  font-size: 14px;
}

.error-modal-footer {
  display: flex;
  gap: 12px;
  justify-content: flex-end;
  padding: 16px 24px 24px 24px;
  border-top: 1px solid #f0f0f0;
}

.error-modal-close,
.error-modal-retry {
  padding: 8px 16px;
  border: none;
  border-radius: 6px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
}

.error-modal-close {
  background: #6c757d;
  color: white;
}

.error-modal-close:hover {
  background: #5a6268;
}

.error-modal-retry {
  background: linear-gradient(90deg, var(--bright-blue), var(--light-blue));
  color: white;
}

.error-modal-retry:hover {
  background: linear-gradient(90deg, var(--light-blue), #5a92a1);
}

/* Responsive para el modal de error */
@media (max-width: 768px) {
  .error-modal-content {
    width: 95%;
    max-height: 90vh;
  }
  
  .error-modal-header,
  .error-modal-body,
  .error-modal-footer {
    padding-left: 16px;
    padding-right: 16px;
  }
  
  .error-modal-footer {
    flex-direction: column;
    gap: 8px;
  }
  
  .error-modal-close,
  .error-modal-retry {
    width: 100%;
    padding: 12px;
  }
}

/* Estilos para las notificaciones de distribución de sprints */
.sprint-distribution-notification,
.sprint-warning-notification {
  position: fixed;
  top: 20px;
  right: 20px;
  color: white;
  padding: 16px 24px;
  border-radius: 12px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  display: flex;
  align-items: flex-start;
  gap: 12px;
  z-index: 9999;
  font-weight: 500;
  transform: translateX(100%);
  opacity: 0;
  transition: transform 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55), opacity 0.3s ease;
  max-width: 400px;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.sprint-distribution-notification.visible,
.sprint-warning-notification.visible {
  transform: translateX(0);
  opacity: 1;
}

.sprint-warning-notification {
  background: linear-gradient(135deg, #ff6b35, #e55a2b);
  border-color: rgba(255, 107, 53, 0.3);
}

.sprint-distribution-notification svg,
.sprint-warning-notification svg {
  flex-shrink: 0;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
}

.sprint-distribution-notification .notification-content,
.sprint-warning-notification .notification-content {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.sprint-distribution-notification .notification-content strong,
.sprint-warning-notification .notification-content strong {
  font-size: 0.95rem;
  font-weight: 600;
  color: white;
}

.sprint-distribution-notification .notification-content span,
.sprint-warning-notification .notification-content span {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.9);
  line-height: 1.3;
}

.sprint-list {
  font-family: 'Courier New', monospace;
  font-size: 0.8rem !important;
  background: rgba(255, 255, 255, 0.1);
  padding: 4px 8px;
  border-radius: 4px;
  margin-top: 4px;
}

/* Responsividad para las nuevas notificaciones */
@media (max-width: 768px) {
  .sprint-distribution-notification,
  .sprint-warning-notification {
    top: 10px;
    right: 10px;
    left: 10px;
    max-width: none;
    padding: 12px 16px;
  }
  
  .sprint-distribution-notification .notification-content strong,
  .sprint-warning-notification .notification-content strong {
    font-size: 0.9rem;
  }
  
  .sprint-distribution-notification .notification-content span,
  .sprint-warning-notification .notification-content span {
    font-size: 0.8rem;
  }
  
  .sprint-list {
    font-size: 0.75rem !important;
  }
}

/* API Key Configuration Modal Styles */
.modal {
  display: none;
  position: fixed;
  z-index: 10000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.5);
  overflow: auto;
}

.modal-content {
  background-color: var(--bg-primary);
  margin: 5% auto;
  padding: 0;
  border: 1px solid var(--border-color);
  border-radius: 12px;
  width: 90%;
  max-width: 600px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  animation: modalSlideIn 0.3s ease;
}

.modal-content-sm {
  max-width: 380px;
}

.duration-select-in-modal {
  width: 100%;
  max-width: 100%;
  margin-top: 0.5rem;
  padding: 0.6rem 0.75rem;
}

.modal-body label + .duration-select-in-modal {
  margin-top: 0.5rem;
}

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

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 2rem;
  border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
  margin: 0;
  color: var(--text-primary);
  font-size: 1.5rem;
  font-weight: 600;
}

.modal-close {
  background: none;
  border: none;
  font-size: 2rem;
  color: var(--text-primary);
  cursor: pointer;
  padding: 0;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 4px;
  transition: all 0.2s ease;
}

.modal-close:hover {
  background-color: var(--border-color);
  color: var(--text-accent);
}

.modal-body {
  padding: 2rem;
}

.modal-description {
  color: var(--text-primary);
  margin-bottom: 2rem;
  line-height: 1.6;
}

.api-key-add-section {
  margin-bottom: 2rem;
}

.api-key-add-section h3 {
  color: var(--text-primary);
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0;
}

.api-key-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--bright-blue);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: 6px;
  transition: all 0.2s ease;
  border: 1px solid var(--bright-blue);
  background-color: transparent;
}

.api-key-link:hover {
  background-color: var(--bright-blue);
  color: var(--white);
  text-decoration: none;
}

.api-key-link svg {
  flex-shrink: 0;
}

.api-key-input-group {
  display: flex;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.api-key-modal-model-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.api-key-modal-model-row label {
  font-size: 0.875rem;
  color: var(--text-primary);
  font-weight: 500;
  white-space: nowrap;
}

.api-key-modal-model-select {
  flex: 1;
  min-width: 0;
  max-width: 280px;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  font-size: 0.875rem;
  background: var(--bg-primary);
  color: var(--text-primary);
  cursor: text;
}

.api-key-input {
  flex: 1;
  padding: 0.75rem;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  font-size: 0.875rem;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  font-family: 'Courier New', monospace;
}

.api-key-input:focus {
  outline: none;
  border-color: var(--bright-blue);
  box-shadow: 0 0 0 3px rgba(75, 179, 212, 0.1);
}

.btn-validate {
  padding: 0.75rem 1.5rem;
  background-color: var(--bright-blue);
  color: var(--white);
  border: none;
  border-radius: 6px;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.btn-validate:hover:not(:disabled) {
  background-color: var(--light-blue);
  transform: translateY(-1px);
}

.btn-validate:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.validation-message {
  min-height: 24px;
  font-size: 0.875rem;
  padding: 0.5rem;
  border-radius: 4px;
}

.validation-message .success {
  color: #4bc0c0;
  font-weight: 500;
}

.validation-message .error {
  color: var(--red);
  font-weight: 500;
}

.validation-message .loading {
  color: var(--text-primary);
}

.api-keys-list-section h3 {
  color: var(--text-primary);
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.api-keys-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  max-height: 300px;
  overflow-y: auto;
}

.api-key-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem;
  background-color: rgba(101, 160, 175, 0.05);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  transition: all 0.2s ease;
}

.api-key-item:hover {
  background-color: rgba(101, 160, 175, 0.1);
  border-color: var(--bright-blue);
}

.api-key-item-content {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  flex: 1;
}

.api-key-preview {
  font-family: 'Courier New', monospace;
  font-size: 0.875rem;
  color: var(--text-primary);
  font-weight: 500;
}

.api-key-status {
  font-size: 0.75rem;
  font-weight: 500;
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  display: inline-block;
  width: fit-content;
}

.api-key-status.valid {
  background-color: rgba(75, 192, 192, 0.2);
  color: #4bc0c0;
}

.api-key-status.invalid {
  background-color: rgba(255, 99, 132, 0.2);
  color: #ff6384;
}

.btn-remove {
  background: none;
  border: none;
  color: var(--red);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 0.5rem;
  border-radius: 4px;
  transition: all 0.2s ease;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.btn-remove:hover {
  background-color: rgba(228, 41, 53, 0.1);
  transform: scale(1.1);
}

.no-keys-message {
  text-align: center;
  padding: 2rem;
  color: var(--text-primary);
  background-color: rgba(101, 160, 175, 0.05);
  border: 1px dashed var(--border-color);
  border-radius: 6px;
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
  padding: 1.5rem 2rem;
  border-top: 1px solid var(--border-color);
}

.btn-save {
  padding: 0.75rem 1.5rem;
  background-color: var(--text-accent);
  color: var(--white);
  border: none;
  border-radius: 6px;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-save:hover:not(:disabled) {
  background-color: #c41e2a;
  transform: translateY(-1px);
}

.btn-save:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-cancel {
  padding: 0.75rem 1.5rem;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-cancel:hover {
  background-color: var(--border-color);
}

/* API Key Required Overlay */
.overlay {
  display: none;
  position: fixed;
  z-index: 10001;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.75);
  justify-content: center;
  align-items: center;
  animation: overlayFadeIn 0.3s ease;
  pointer-events: none; /* Allow clicks to pass through to header */
}

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

.overlay-content {
  background-color: var(--bg-primary);
  padding: 3rem;
  border-radius: 12px;
  text-align: center;
  max-width: 500px;
  width: 90%;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
  animation: overlayContentSlideIn 0.3s ease;
  pointer-events: auto; /* Re-enable clicks on overlay content */
}

@keyframes overlayContentSlideIn {
  from {
    transform: scale(0.9);
    opacity: 0;
  }
  to {
    transform: scale(1);
    opacity: 1;
  }
}

.overlay-content h2 {
  color: var(--text-accent);
  margin-bottom: 1rem;
  font-size: 1.75rem;
}

.overlay-content p {
  color: var(--text-primary);
  margin-bottom: 2rem;
  line-height: 1.6;
}

.btn-primary {
  padding: 0.75rem 2rem;
  background-color: var(--text-accent);
  color: var(--white);
  border: none;
  border-radius: 6px;
  font-size: 1rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-primary:hover {
  background-color: #c41e2a;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(228, 41, 53, 0.3);
}

/* Responsive styles for modal */
@media (max-width: 768px) {
  .modal-content {
    width: 95%;
    margin: 10% auto;
  }
  
  .modal-header,
  .modal-body,
  .modal-footer {
    padding: 1rem 1.5rem;
  }
  
  .api-key-add-section > div {
    flex-direction: column;
    align-items: flex-start !important;
    gap: 0.75rem;
  }
  
  .api-key-link {
    width: 100%;
    justify-content: center;
  }
  
  .api-key-input-group {
    flex-direction: column;
  }
  
  .btn-validate {
    width: 100%;
  }
  
  .modal-footer {
    flex-direction: column-reverse;
  }
  
  .btn-save,
  .btn-cancel {
    width: 100%;
  }
  
  .overlay-content {
    padding: 2rem 1.5rem;
  }
}

/* Custom Instructions */
.custom-instructions-toggle {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  border-radius: 4px;
  transition: background-color 0.2s ease;
}

.custom-instructions-toggle:hover {
  background-color: rgba(255, 255, 255, 0.08);
}

.custom-instructions-toggle.has-instructions {
  color: #4bc0c0;
  font-weight: 600;
}

.custom-instructions-toggle.has-instructions::after {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: #4bc0c0;
  margin-left: 4px;
}

.custom-instructions-textarea {
  width: 100%;
  min-height: 120px;
  max-height: 300px;
  padding: 0.75rem;
  border: 1px solid #ccc;
  border-radius: 6px;
  background-color: #ffffff;
  color: #1a1a2e;
  font-family: inherit;
  font-size: 0.875rem;
  line-height: 1.5;
  resize: vertical;
  transition: border-color 0.2s ease;
}

.custom-instructions-textarea:focus {
  outline: none;
  border-color: var(--bright-blue);
  box-shadow: 0 0 0 2px rgba(100, 149, 237, 0.15);
}

.custom-instructions-textarea::placeholder {
  color: #999;
  opacity: 1;
}

.char-count {
  text-align: right;
  font-size: 0.75rem;
  color: var(--text-secondary, #888);
  margin-top: 4px;
}

.char-count.near-limit {
  color: #ffa500;
}

.char-count.at-limit {
  color: #e42935;
}