/* ==========================================================================
   Generador de Citas APA 7 y Referencias - Estilos Oficiales
   Fijate Tools • Normativa de Diseño y Estándares Canónicos
   ========================================================================== */

:root {
  --bg-app: #0b0f19;
  --bg-card: #111827;
  --bg-card-alt: #172033;
  --bg-card-subtle: #1f293d;
  --bg-input: #0e1422;
  --border-color: #243049;
  --border-focus: #3b82f6;
  
  --text-main: #f3f4f6;
  --text-muted: #9ca3af;
  --text-dim: #6b7280;
  
  --primary: #3b82f6;
  --primary-hover: #2563eb;
  --primary-glow: rgba(59, 130, 246, 0.25);
  
  --success: #10b981;
  --success-glow: rgba(16, 185, 129, 0.2);
  --warning: #f59e0b;
  --warning-glow: rgba(245, 158, 11, 0.2);
  --danger: #ef4444;
  --danger-glow: rgba(239, 68, 68, 0.2);
  --purple: #8b5cf6;
  
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  
  --shadow-card: 0 10px 25px -5px rgba(0, 0, 0, 0.4), 0 8px 10px -6px rgba(0, 0, 0, 0.3);
  --transition-fast: 0.18s ease;
  --transition-normal: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="light"] {
  --bg-app: #f4f6fb;
  --bg-card: #ffffff;
  --bg-card-alt: #f8fafc;
  --bg-card-subtle: #edf2f7;
  --bg-input: #ffffff;
  --border-color: #e2e8f0;
  --border-focus: #2563eb;
  
  --text-main: #0f172a;
  --text-muted: #475569;
  --text-dim: #64748b;
  
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --primary-glow: rgba(37, 99, 235, 0.15);
  
  --success: #059669;
  --success-glow: rgba(5, 150, 105, 0.15);
  --warning: #d97706;
  --warning-glow: rgba(217, 119, 6, 0.15);
  --danger: #dc2626;
  --danger-glow: rgba(220, 38, 38, 0.15);
  --purple: #7c3aed;
  
  --shadow-card: 0 8px 20px -4px rgba(0, 0, 0, 0.06), 0 4px 6px -2px rgba(0, 0, 0, 0.04);
}

/* --------------------------------------------------------------------------
   Reset y Tipografía
   -------------------------------------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--bg-app);
  color: var(--text-main);
  line-height: 1.55;
  overflow-x: clip;
  width: 100%;
  max-width: 100%;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Outfit', sans-serif;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: -0.015em;
}

.bib-counter-badge, .authors-hint, .doi-code, .bibtex-code {
  font-family: 'JetBrains Mono', monospace;
}

/* --------------------------------------------------------------------------
   Layout y Contenedor Principal
   -------------------------------------------------------------------------- */
.main-wrapper.tool-layout {
  max-width: 1200px;
  width: 100%;
  margin: 1.5rem auto 3rem;
  padding: 0 1rem;
  flex: 1;
}

.tool-with-sidebar {
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
  width: 100%;
}

.tool-main-content {
  flex: 1 1 0%;
  min-width: 0;
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

/* Badge contador de bibliografía en cabecera */
.bib-counter-badge {
  position: absolute;
  top: -4px;
  right: -4px;
  background: var(--primary);
  color: #ffffff;
  font-size: 0.65rem;
  font-weight: 800;
  padding: 2px 5px;
  border-radius: 999px;
  border: 2px solid var(--bg-app);
}

/* --------------------------------------------------------------------------
   Tarjeta Principal de Citación
   -------------------------------------------------------------------------- */
.citation-tool-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-card);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .citation-tool-card {
    padding: 2rem;
    gap: 2rem;
  }
}

/* --------------------------------------------------------------------------
   Selector de Estilo de Citación
   -------------------------------------------------------------------------- */
.style-selector-bar {
  background: var(--bg-card-alt);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.style-selector-label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
}

.style-selector-label svg {
  color: var(--primary);
}

.style-chips-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.5rem;
}

@media (min-width: 640px) {
  .style-chips-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 1024px) {
  .style-chips-grid {
    grid-template-columns: repeat(6, minmax(0, 1fr));
  }
}

.style-chip {
  background: var(--bg-card-subtle);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.6rem 0.75rem;
  text-align: left;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  transition: all var(--transition-fast);
  color: var(--text-main);
  min-height: 48px;
}

.style-chip strong {
  font-size: 0.82rem;
}

.style-chip small {
  font-size: 0.7rem;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.style-chip:hover {
  border-color: var(--primary);
  background: var(--bg-card);
  transform: translateY(-1px);
}

.style-chip.active {
  border-color: var(--primary);
  background: var(--primary-glow);
  box-shadow: 0 0 0 1px var(--primary);
}

.style-chip.active strong {
  color: var(--primary);
}

/* --------------------------------------------------------------------------
   Selector de Tipo de Fuente (8 pestañas)
   -------------------------------------------------------------------------- */
.source-types-section {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.source-section-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
}

.source-types-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.5rem;
}

@media (min-width: 640px) {
  .source-types-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 1024px) {
  .source-types-grid {
    grid-template-columns: repeat(8, minmax(0, 1fr));
  }
}

.source-type-btn {
  background: var(--bg-card-alt);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.65rem 0.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  color: var(--text-muted);
  min-height: 56px;
  text-align: center;
}

.source-type-btn svg {
  color: var(--text-dim);
  transition: color var(--transition-fast);
}

.source-type-btn span {
  font-size: 0.76rem;
  font-weight: 600;
}

.source-type-btn:hover {
  border-color: var(--primary);
  color: var(--text-main);
  background: var(--bg-card-subtle);
}

.source-type-btn:hover svg {
  color: var(--primary);
}

.source-type-btn.active {
  border-color: var(--primary);
  background: var(--primary);
  color: #ffffff;
  box-shadow: 0 4px 12px var(--primary-glow);
}

.source-type-btn.active svg {
  color: #ffffff;
}

/* --------------------------------------------------------------------------
   Búsqueda y Autocompletado por DOI / ISBN
   -------------------------------------------------------------------------- */
.lookup-box {
  background: var(--bg-card-alt);
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1rem 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.lookup-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-muted);
}

.lookup-header svg {
  color: var(--primary);
}

.lookup-form-row {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

@media (min-width: 640px) {
  .lookup-form-row {
    flex-direction: row;
  }
}

.lookup-input-wrap {
  flex: 1 1 0%;
  min-width: 0;
}

.lookup-legal-row {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

@media (min-width: 768px) {
  .lookup-legal-row {
    display: grid;
    grid-template-columns: 1.3fr 1fr;
    gap: 0.75rem;
  }
}

.legal-select-wrap {
  width: 100%;
}

.legal-quick-input-wrap {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.legal-quick-input-wrap .form-input {
  flex: 1 1 0%;
  min-width: 0;
}

.lookup-status-msg {
  font-size: 0.78rem;
  padding: 0.4rem 0.65rem;
  border-radius: var(--radius-sm);
}

.lookup-status-msg.loading {
  background: var(--primary-glow);
  color: var(--primary);
}

.lookup-status-msg.success {
  background: var(--success-glow);
  color: var(--success);
}

.lookup-status-msg.error {
  background: var(--danger-glow);
  color: var(--danger);
}

/* --------------------------------------------------------------------------
   Formulario de Entrada de Datos
   -------------------------------------------------------------------------- */
.citation-form-section {
  background: var(--bg-card-alt);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

@media (min-width: 768px) {
  .citation-form-section {
    padding: 1.5rem;
  }
}

.section-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.75rem;
}

.form-section-heading {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-main);
}

.btn-text-action {
  background: transparent;
  border: none;
  color: var(--text-dim);
  font-size: 0.78rem;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  transition: color var(--transition-fast);
}

.btn-text-action:hover {
  color: var(--danger);
}

/* Gestor de Autores */
.authors-manager-box {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.authors-header {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  justify-content: space-between;
}

@media (min-width: 640px) {
  .authors-header {
    flex-direction: row;
    align-items: center;
  }
}

.author-type-toggle {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.author-type-toggle label {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  cursor: pointer;
}

.authors-list {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.author-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.5rem;
  align-items: center;
}

@media (min-width: 640px) {
  .author-row {
    grid-template-columns: 1.5fr 1.2fr 1fr auto;
  }
}

.authors-footer-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  padding-top: 0.5rem;
  border-top: 1px dashed var(--border-color);
}

.authors-hint {
  font-size: 0.72rem;
  color: var(--text-dim);
}

/* Campos de Formulario */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.form-label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-main);
}

.form-input, .form-select {
  width: 100%;
  max-width: 100%;
  min-width: 0;
  height: 42px;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0 0.85rem;
  font-size: 0.88rem;
  color: var(--text-main);
  font-family: inherit;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-select {
  text-overflow: ellipsis;
  white-space: nowrap;
  overflow: hidden;
  cursor: pointer;
}

.form-input:focus, .form-select:focus {
  outline: none;
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px var(--primary-glow);
}

.dynamic-fields-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

@media (min-width: 640px) {
  .dynamic-fields-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .grid-full-width {
    grid-column: span 2;
  }
}

@media (min-width: 1024px) {
  .grid-col-3 {
    grid-column: span 1;
  }
}

/* --------------------------------------------------------------------------
   Panel de Resultados y Visualización en Vivo
   -------------------------------------------------------------------------- */
.citation-results-section {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.results-header-row {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  justify-content: space-between;
}

@media (min-width: 640px) {
  .results-header-row {
    flex-direction: row;
    align-items: center;
  }
}

.results-heading {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.1rem;
  font-weight: 700;
}

.results-heading svg {
  color: var(--primary);
}

.citation-card-box {
  background: var(--bg-card-alt);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  transition: border-color var(--transition-fast);
}

.citation-card-box:hover {
  border-color: var(--primary);
}

.citation-box-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
}

.citation-box-title {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-muted);
}

.btn-copy-action {
  background: var(--bg-card-subtle);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  border-radius: var(--radius-sm);
  padding: 0.35rem 0.65rem;
  font-size: 0.76rem;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  transition: all var(--transition-fast);
}

.btn-copy-action:hover {
  background: var(--primary);
  border-color: var(--primary);
  color: #ffffff;
}

.citation-output-area {
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1rem;
  font-size: 0.95rem;
  line-height: 1.65;
  color: var(--text-main);
  word-break: break-word;
}

/* Sangría Francesa (Hanging Indent) oficial APA 7 */
.hanging-indent {
  padding-left: 2.2rem;
  text-indent: -2.2rem;
}

.in-text-citations-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

@media (min-width: 640px) {
  .in-text-citations-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* Exportaciones Técnicas */
.tech-exports-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  padding-top: 0.5rem;
}

.tech-exports-label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-dim);
  margin-right: 0.25rem;
}

/* --------------------------------------------------------------------------
   Botones Genéricos
   -------------------------------------------------------------------------- */
.btn-primary, .btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  font-family: inherit;
  font-weight: 600;
  font-size: 0.88rem;
  border-radius: var(--radius-md);
  padding: 0.65rem 1.15rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  min-height: 42px;
  text-decoration: none;
}

.btn-primary {
  background: var(--primary);
  color: #ffffff;
  border: 1px solid transparent;
  box-shadow: 0 4px 12px var(--primary-glow);
}

.btn-primary:hover {
  background: var(--primary-hover);
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--bg-card-subtle);
  color: var(--text-main);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: var(--bg-card);
  border-color: var(--text-dim);
}

.btn-sm {
  font-size: 0.8rem;
  padding: 0.45rem 0.85rem;
  min-height: 38px;
}

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

.btn-remove-author {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-dim);
  border-radius: var(--radius-md);
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-remove-author:hover {
  background: var(--danger-glow);
  border-color: var(--danger);
  color: var(--danger);
}

/* --------------------------------------------------------------------------
   Guía Didáctica y Explicativa
   -------------------------------------------------------------------------- */
.educational-guide-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-card);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

@media (min-width: 768px) {
  .educational-guide-card {
    padding: 2rem;
    gap: 1.5rem;
  }
}

.guide-main-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-main);
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.85rem;
}

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

@media (min-width: 768px) {
  .guide-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.guide-col {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  font-size: 0.88rem;
  color: var(--text-muted);
}

.guide-subhead {
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--text-main);
}

.guide-col ul {
  padding-left: 1.2rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.styles-comparison-list {
  list-style: none !important;
  padding-left: 0 !important;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.styles-comparison-list li {
  background: var(--bg-card-alt);
  padding: 0.45rem 0.75rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
}

/* --------------------------------------------------------------------------
   Modales Canónicos
   -------------------------------------------------------------------------- */
.fijate-modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(4px);
  z-index: 9999;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.fijate-modal-backdrop.active {
  display: flex;
  animation: modalFadeIn 0.2s ease-out;
}

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

.fijate-modal-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  width: 100%;
  max-width: 650px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  animation: modalSlideUp 0.2s ease-out;
}

.modal-bib-size {
  max-width: 700px;
}

.modal-alert-size {
  max-width: 400px;
}

@keyframes modalSlideUp {
  from { transform: translateY(15px); }
  to { transform: translateY(0); }
}

.fijate-modal-header {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.fijate-modal-title-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.fijate-modal-title-group svg {
  color: var(--primary);
}

.fijate-modal-title {
  font-size: 1.05rem;
  font-weight: 700;
}

.fijate-modal-close {
  background: transparent;
  border: none;
  font-size: 1.5rem;
  line-height: 1;
  color: var(--text-dim);
  cursor: pointer;
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast);
}

.fijate-modal-close:hover {
  color: var(--text-main);
}

.fijate-modal-body {
  padding: 1.25rem;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.fijate-modal-footer {
  padding: 1rem 1.25rem;
  border-top: 1px solid var(--border-color);
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.5rem;
}

.bib-modal-desc {
  font-size: 0.82rem;
  color: var(--text-muted);
}

.bib-items-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.bib-item-card {
  background: var(--bg-card-alt);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.85rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  transition: border-color var(--transition-fast);
}

.bib-item-card:hover {
  border-color: var(--primary);
}

.bib-item-text {
  font-size: 0.88rem;
  line-height: 1.55;
  color: var(--text-main);
}

.bib-item-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.4rem;
}

.bib-empty-state {
  text-align: center;
  padding: 2rem 1rem;
  color: var(--text-dim);
  font-size: 0.85rem;
}

.modal-icon-bubble {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
}

/* --------------------------------------------------------------------------
   Impresión Optimizada
   -------------------------------------------------------------------------- */
@media print {
  body {
    background: #ffffff !important;
    color: #000000 !important;
  }
  .app-header, .tools-ad-banner-section, .tool-ad-sidebar, .fijate-footer, .style-selector-bar, .source-types-section, .lookup-box, .citation-form-section, .tech-exports-row, .btn-copy-action, #btn-add-to-bib {
    display: none !important;
  }
  .main-wrapper.tool-layout {
    margin: 0 !important;
    padding: 0 !important;
    max-width: 100% !important;
  }
  .citation-tool-card, .citation-card-box, .educational-guide-card {
    border: none !important;
    box-shadow: none !important;
    background: #ffffff !important;
    color: #000000 !important;
  }
  .citation-output-area {
    background: #ffffff !important;
    color: #000000 !important;
    border: 1px solid #cccccc !important;
  }
}