/* ===================================
   PLAN DE LABOR MOBILE - SISTEMA MODERNO 2025
   ================================ */

/* Variables CSS para consistencia */
:root {
  --c-primary: #1d5ee3;
  --c-primary-dark: #0f3cc9;
  --c-primary-light: #4579e8;
  --c-secondary: #6c757d;
  --c-success: #28a745;
  --c-danger: #dc3545;
  --c-warning: #ffc107;
  --c-info: #17a2b8;
  --c-light: #f8f9fa;
  --c-dark: #2c3e50;
  --c-white: #ffffff;
  --c-gray-50: #fafbfc;
  --c-gray-100: #f8f9fa;
  --c-gray-200: #e9ecef;
  --c-gray-300: #dee2e6;
  --c-gray-400: #ced4da;
  --c-gray-500: #adb5bd;
  --c-gray-600: #6c757d;
  --c-gray-700: #495057;
  --c-gray-800: #343a40;
  --c-gray-900: #212529;
  --c-pl: #194187;
  --c-pl-light: #2856a3;
  
  /* Espaciado */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  
  /* Border radius */
  --border-radius: 8px;
  --border-radius-sm: 4px;
  --border-radius-lg: 12px;
  --border-radius-xl: 16px;
  
  /* Sombras */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.12);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 25px rgba(0,0,0,0.15);
  --shadow-xl: 0 20px 40px rgba(0,0,0,0.2);
  
  /* Transiciones */
  --transition: all 0.3s ease;
  --transition-fast: all 0.15s ease;
  
  /* Tipografía */
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
}

/* Reset y estilos base */
* {
  box-sizing: border-box;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  color: var(--c-dark);
  background: var(--c-gray-50);
}

/* Contenedores principales con transiciones */
#pl_sesion {
  transition: opacity 0.3s ease;
}

/* =====================================
   HERO SECTION
   ===================================== */

.hero-pl {
  background: linear-gradient(135deg, var(--c-pl) 0%, var(--c-pl-light) 50%, var(--c-primary) 100%);
  color: var(--c-white);
  padding: 3rem 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero-pl::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 100" fill="rgba(255,255,255,0.1)"><polygon points="0,0 1000,100 1000,0"/></svg>');
  background-size: cover;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 800px;
  margin: 0 auto;
  padding: 0 1rem;
}

.hero-title {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 1rem;
  text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.hero-subtitle {
  font-size: 1.2rem;
  opacity: 0.9;
  margin-bottom: 2rem;
  font-weight: 300;
}

.hero-logo {
  width: 80px;
  height: auto;
  margin-bottom: 1rem;
  filter: drop-shadow(0 4px 8px rgba(0,0,0,0.3));
}

/* =====================================
   FILTROS Y FORMULARIOS
   ===================================== */

.filters-container {
  background: var(--c-white);
  padding: 2rem;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
  margin: 2rem 0;
  max-width: 1000px;
  margin-left: auto;
  margin-right: auto;
}

.filters-title {
  color: var(--c-pl);
  font-weight: 700;
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.form-row {
  display: flex;
  gap: 2rem;
  margin-bottom: 1rem;
  flex-wrap: wrap;
}

.form-group {
  flex: 1;
  min-width: 300px;
}

.form-label-modern {
  display: block;
  font-weight: 600;
  color: var(--c-dark);
  margin-bottom: 0.5rem;
  font-size: var(--font-size-lg);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.form-control-modern {
  width: 100%;
  padding: 1rem;
  border: 2px solid var(--c-gray-300);
  border-radius: var(--border-radius);
  font-size: var(--font-size-lg);
  transition: var(--transition);
  background: var(--c-white);
}

.form-control-modern:focus {
  outline: none;
  border-color: var(--c-pl);
  box-shadow: 0 0 0 0.2rem rgba(25, 65, 135, 0.25);
}

/* =====================================
   PLAN DE LABOR SESSION STYLES
   ===================================== */

.pl-sesion-container {
  animation: fadeInUp 0.6s ease;
  max-width: 1000px;
  margin: 0 auto;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.pl-session-title {
  color: var(--c-pl);
  font-size: 2.5rem;
  font-weight: 800;
  text-align: center;
  margin-bottom: 1rem;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.pl-session-date {
  text-align: center;
  font-size: 1.5rem;
  color: var(--c-gray-600);
  margin-bottom: 2rem;
}

.date-badge {
  background: linear-gradient(135deg, var(--c-pl) 0%, var(--c-pl-light) 100%);
  color: var(--c-white);
  padding: 0.5rem 1rem;
  border-radius: var(--border-radius);
  font-weight: 600;
  box-shadow: var(--shadow-sm);
}

/* Documento Plan de Labor */
.pl-document-card {
  background: linear-gradient(135deg, var(--c-white) 0%, var(--c-gray-50) 100%);
  border: 2px solid var(--c-pl-light);
  border-radius: var(--border-radius-lg);
  padding: 1.5rem;
  margin-bottom: 2rem;
  box-shadow: var(--shadow-md);
}

.pl-document-header {
  background: linear-gradient(135deg, var(--c-pl) 0%, var(--c-pl-light) 100%);
  color: var(--c-white);
  padding: 1rem 1.5rem;
  border-radius: var(--border-radius);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}

.pl-document-title {
  font-size: 1.3rem;
  font-weight: 700;
  flex: 1;
}

.pl-download-btn {
  background: linear-gradient(135deg, var(--c-success) 0%, #1e7e34 100%);
  color: var(--c-white);
  padding: 0.6rem 1.2rem;
  border-radius: var(--border-radius);
  text-decoration: none;
  font-weight: 600;
  font-size: var(--font-size-base);
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  box-shadow: var(--shadow-sm);
}

.pl-download-btn:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  text-decoration: none;
  color: var(--c-white);
}

.pl-download-btn::before {
  content: '\f019';
  font-family: 'Font Awesome 5 Free';
  font-weight: 900;
}

/* =====================================
   TEMAS CONTAINER
   ===================================== */

.temas-container {
  background: var(--c-white);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
  margin: 1.5rem 0;
  overflow: hidden;
}

.temas-header {
  background: linear-gradient(135deg, var(--c-pl) 0%, var(--c-pl-light) 100%);
  color: var(--c-white);
  padding: 1.25rem 1.5rem;
  font-weight: 700;
  font-size: 1.2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: relative;
}

.temas-header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(45deg, transparent 30%, rgba(255,255,255,0.1) 50%, transparent 70%);
  animation: shimmer 3s ease-in-out infinite;
}

@keyframes shimmer {
  0%, 100% { transform: translateX(-100%); }
  50% { transform: translateX(100%); }
}

.temas-counter {
  background: rgba(255,255,255,0.2);
  padding: 0.25rem 0.75rem;
  border-radius: var(--border-radius);
  font-size: 0.9rem;
  font-weight: 600;
}

/* Búsqueda de temas */
.temas-search {
  padding: 1.5rem;
  background: var(--c-gray-50);
  border-bottom: 1px solid var(--c-gray-200);
}

.search-input-container {
  position: relative;
  max-width: 400px;
  margin: 0 auto;
}

.search-icon {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--c-gray-500);
  z-index: 2;
}

.temas-search input {
  padding: 0.75rem 1rem 0.75rem 3rem;
  border: 2px solid var(--c-gray-300);
  border-radius: var(--border-radius-lg);
  transition: var(--transition);
  width: 100%;
  font-size: var(--font-size-base);
}

.temas-search input:focus {
  border-color: var(--c-pl);
  box-shadow: 0 0 0 0.2rem rgba(25, 65, 135, 0.25);
  outline: none;
}

.clear-search-btn {
  position: absolute;
  right: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--c-gray-500);
  cursor: pointer;
  padding: 0.5rem;
  border-radius: 50%;
  transition: var(--transition);
  z-index: 2;
}

.clear-search-btn:hover {
  background: var(--c-gray-200);
  color: var(--c-dark);
}

/* Lista de temas */
.temas-list {
  padding: 1rem;
}

/* =====================================
   TEMA CARDS
   ===================================== */

.tema-card {
  background: var(--c-white);
  border: 1px solid var(--c-gray-200);
  border-radius: var(--border-radius-lg);
  margin-bottom: 1.5rem;
  overflow: hidden;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}

.tema-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--c-pl-light);
}

.tema-card.tema-archivo {
  border-left: 4px solid var(--c-warning);
}

.tema-card.tema-art101 {
  border-left: 4px solid var(--c-info);
}

.tema-header {
  background: linear-gradient(135deg, var(--c-pl) 0%, var(--c-pl-light) 100%);
  color: var(--c-white);
  padding: 1rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.tema-punto {
  background: rgba(255,255,255,0.2);
  padding: 0.5rem 1rem;
  border-radius: var(--border-radius);
  font-size: 1.5rem;
  font-weight: 700;
  min-width: 60px;
  text-align: center;
}

.tema-categoria {
  background: rgba(255,255,255,0.15);
  padding: 0.4rem 0.8rem;
  border-radius: var(--border-radius);
  font-size: var(--font-size-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.tema-archivo .tema-categoria {
  background: linear-gradient(135deg, var(--c-warning) 0%, #e0a800 100%);
  color: var(--c-dark);
}

.tema-art101 .tema-categoria {
  background: linear-gradient(135deg, var(--c-info) 0%, #138496 100%);
  color: var(--c-white);
}

.tema-content {
  padding: 1.5rem;
}

.tema-descripcion {
  font-size: var(--font-size-lg);
  line-height: 1.6;
  color: var(--c-gray-700);
  margin-bottom: 1rem;
  text-align: justify;
}

.tema-expediente {
  background: var(--c-gray-50);
  padding: 1rem;
  border-radius: var(--border-radius);
  margin-bottom: 1rem;
  border-left: 4px solid var(--c-pl);
}

.tema-exp-numero {
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--c-pl);
  margin-bottom: 0.5rem;
}

.tema-exp-texto {
  color: var(--c-gray-600);
  font-size: var(--font-size-base);
}

.tema-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.tema-estado {
  padding: 0.5rem 1rem;
  border-radius: var(--border-radius);
  font-size: var(--font-size-sm);
  font-weight: 600;
}

.tema-estado.publicado {
  background: var(--c-success);
  color: var(--c-white);
}

.tema-estado.pendiente {
  background: var(--c-warning);
  color: var(--c-dark);
}

/* Botones de acción */
.btn-ver-detalles {
  background: linear-gradient(135deg, var(--c-pl) 0%, var(--c-pl-light) 100%);
  color: var(--c-white);
  border: none;
  padding: 0.6rem 1.2rem;
  border-radius: var(--border-radius);
  font-weight: 600;
  font-size: var(--font-size-sm);
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  box-shadow: var(--shadow-sm);
}

.btn-ver-detalles:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  text-decoration: none;
  color: var(--c-white);
}

.btn-ver-detalles:focus {
  outline: none;
  box-shadow: 0 0 0 0.2rem rgba(25, 65, 135, 0.5);
}

.btn-ver-detalles::before {
  content: '\f078';
  font-family: 'Font Awesome 5 Free';
  font-weight: 900;
}

.btn-ver-detalles[aria-expanded="true"]::before {
  content: '\f077';
}

/* Detalles del tema */
.tema-detalles {
  margin-top: 1rem;
  padding: 1rem;
  background: var(--c-gray-50);
  border-top: 2px solid var(--c-gray-200);
  border-radius: var(--border-radius);
  animation: slideDown 0.3s ease;
}

@keyframes slideDown {
  from {
    opacity: 0;
    max-height: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    max-height: 500px;
    transform: translateY(0);
  }
}

/* =====================================
   BACK TO TOP BUTTON
   ===================================== */

.back-to-top-btn {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 50px;
  height: 50px;
  background: linear-gradient(135deg, var(--c-pl) 0%, var(--c-pl-light) 100%);
  color: var(--c-white);
  border: none;
  border-radius: 50%;
  font-size: 1.2rem;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: var(--shadow-lg);
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
}

.back-to-top-btn.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top-btn:hover {
  transform: translateY(-5px) scale(1.1);
  box-shadow: var(--shadow-xl);
}

.back-to-top-btn:focus {
  outline: none;
  box-shadow: 0 0 0 0.2rem rgba(25, 65, 135, 0.5);
}

/* =====================================
   LOADING STATES
   ===================================== */

.loading-spinner {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid rgba(255,255,255,.3);
  border-radius: 50%;
  border-top-color: var(--c-white);
  animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.loading-container {
  text-align: center;
  padding: 3rem;
  color: var(--c-gray-600);
}

.loading-container .loading-spinner {
  width: 40px;
  height: 40px;
  border-color: var(--c-pl);
  border-top-color: transparent;
  margin-bottom: 1rem;
}

/* Mensaje de resultados de búsqueda */
.search-results-message {
  margin: 1rem 0;
  text-align: center;
  padding: 1rem;
  border-radius: var(--border-radius);
  animation: fadeIn 0.3s ease;
}

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

/* =====================================
   RESPONSIVE DESIGN
   ===================================== */

@media (max-width: 768px) {
  .hero-title {
    font-size: 2rem;
  }
  
  .hero-subtitle {
    font-size: 1rem;
  }
  
  .form-row {
    flex-direction: column;
    gap: 1rem;
  }
  
  .form-group {
    min-width: 100%;
  }
  
  .tema-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }
  
  .tema-actions {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .pl-document-header {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .back-to-top-btn {
    bottom: 1rem;
    right: 1rem;
    width: 45px;
    height: 45px;
  }
  
  .temas-search {
    padding: 1rem;
  }
  
  .search-input-container {
    max-width: 100%;
  }
  
  .pl-session-title {
    font-size: 2rem;
  }
  
  .pl-session-date {
    font-size: 1.2rem;
  }
}

@media (max-width: 480px) {
  .hero-content {
    padding: 0 0.5rem;
  }
  
  .filters-container {
    padding: 1rem;
    margin: 1rem 0;
  }
  
  .tema-card {
    margin-bottom: 1rem;
  }
  
  .tema-content {
    padding: 1rem;
  }
  
  .temas-list {
    padding: 0.5rem;
  }
  
  .pl-session-title {
    font-size: 1.5rem;
  }
}

/* =====================================
   ACCESSIBILITY IMPROVEMENTS
   ===================================== */

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Focus indicators mejorados */
button:focus,
input:focus,
select:focus,
a:focus {
  outline: 3px solid var(--c-pl);
  outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  :root {
    --c-pl: #000080;
    --c-pl-light: #0000ff;
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.5);
    --shadow-md: 0 4px 8px rgba(0,0,0,0.5);
    --shadow-lg: 0 8px 16px rgba(0,0,0,0.5);
  }
}

/* Print styles */
@media print {
  .back-to-top-btn,
  .temas-search,
  .hero-pl {
    display: none !important;
  }
  
  .tema-card {
    break-inside: avoid;
    box-shadow: none;
    border: 1px solid #000;
  }
}

/* =====================================
   ESTILOS PARA BOTONES DE ARCHIVOS
   ===================================== */

/* Contenedor de botones de archivos */
#archivos {
  gap: 0.5rem !important;
  padding: 0.5rem;
  background: var(--c-gray-50);
  border-radius: var(--border-radius);
  margin-top: 1rem !important;
}

/* Botones de archivo uniformes */
.btn-archivo {
  min-width: 130px !important;
  max-width: 140px !important;
  padding: 0.375rem 0.5rem !important;
  font-size: var(--font-size-xs) !important;
  font-weight: 600 !important;
  text-align: center !important;
  white-space: nowrap !important;
  overflow: hidden !important;
  text-overflow: ellipsis !important;
  border-width: 1px !important;
  transition: var(--transition-fast) !important;
  text-decoration: none !important;
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  gap: 0.25rem !important;
}

/* Iconos en botones */
.btn-archivo i {
  font-size: 0.75rem !important;
  margin-right: 0.25rem !important;
}

/* Estados hover para botones */
.btn-archivo:hover {
  transform: translateY(-1px) !important;
  box-shadow: var(--shadow-md) !important;
  text-decoration: none !important;
}

/* Botones específicos por tipo */
.btn-outline-secondary.btn-archivo {
  border-color: var(--c-gray-400) !important;
  color: var(--c-gray-700) !important;
}

.btn-outline-secondary.btn-archivo:hover {
  background-color: var(--c-gray-600) !important;
  border-color: var(--c-gray-600) !important;
  color: var(--c-white) !important;
}

.btn-outline-primary.btn-archivo {
  border-color: var(--c-primary) !important;
  color: var(--c-primary) !important;
}

.btn-outline-primary.btn-archivo:hover {
  background-color: var(--c-primary) !important;
  border-color: var(--c-primary) !important;
  color: var(--c-white) !important;
}

.btn-outline-success.btn-archivo {
  border-color: var(--c-success) !important;
  color: var(--c-success) !important;
}

.btn-outline-success.btn-archivo:hover {
  background-color: var(--c-success) !important;
  border-color: var(--c-success) !important;
  color: var(--c-white) !important;
}

/* Responsive para botones */
@media (max-width: 576px) {
  .btn-archivo {
    min-width: 110px !important;
    max-width: 120px !important;
    font-size: 0.7rem !important;
    padding: 0.25rem 0.4rem !important;
  }
  
  #archivos {
    gap: 0.25rem !important;
    justify-content: center !important;
  }
}

@media (max-width: 420px) {
  .btn-archivo {
    min-width: 100px !important;
    max-width: 110px !important;
    font-size: 0.65rem !important;
  }
  
  .btn-archivo i {
    display: none !important; /* Ocultar iconos en pantallas muy pequeñas */
  }
}

/* Para contenedores de detalles */
.tema-detalles .container {
  padding: 0.5rem !important;
}

.tema-detalles .container > div {
  margin-bottom: 0.5rem;
  font-size: var(--font-size-sm);
}