:root {
  --primary-color: #3498db;
  --secondary-color: #2c3e50;
  --accent-color: #2980b9;
  --text-color: #333;
  --light-bg: #f5f5f5;
  --white: #ffffff;
  --shadow: 0 3px 10px rgba(0,0,0,0.1);
  --transition: all 0.3s ease;
  --title-font: 'Georgia', serif;
  --text-font: 'Havana', sans-serif;
}

/* Estilos base específicos para Plan de Estudios */
.pl-content-overlay {
  position: relative;
  background-color: transparent;
  padding-top: 80px;
}

/* Hero Section */
.pl-hero {
  position: relative;
  height: 60vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 0 20px;
  animation: pl-fadeIn 1s ease-in;
}

.pl-hero::before {
  content: "";
  background-image: url(libro.png);
  background-size: cover;
  background-position: center;
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  filter: brightness(20%);
  z-index: -1;
}

@keyframes pl-fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.pl-hero-title {
  font-size: 3rem;
  margin-bottom: 20px;
  color: white;
  animation: pl-slideUp 0.8s ease-out 0.2s both;
  text-align: center;
  line-height: 1.2;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
  font-weight: bold;
  letter-spacing: 1px;
  font-family: var(--title-font);
}

.pl-hero-subtitle {
  font-size: 1.5rem;
  max-width: 700px;
  margin-bottom: 30px;
  animation: pl-slideUp 0.8s ease-out 0.4s both;
  color: white;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
  font-family: var(--text-font);
}

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

/* Secciones generales */
.pl-section {
  padding: 80px 20px;
  max-width: 1200px;
  margin: 0 auto;
  opacity: 0;
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.pl-section.visible {
  opacity: 1;
  transform: translateY(0);
}

.pl-section-title {
  text-align: center;
  margin-bottom: 40px;
  font-size: 2rem;
  color: var(--secondary-color);
  position: relative;
  padding-bottom: 15px;
  font-family: var(--title-font);
  font-weight: 700;
}

.pl-section-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 80px;
  height: 3px;
  background-color: var(--primary-color);
}

/* Grid de características */
.pl-features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
  max-width: 1200px;
  margin: 0 auto;
}

.pl-feature-card {
  background: rgba(255, 255, 255, 0.9);
  padding: 30px;
  border-radius: 8px;
  box-shadow: var(--shadow);
  text-align: center;
  transition: var(--transition);
  transform: translateY(20px);
  opacity: 0;
}

.pl-feature-card.visible {
  transform: translateY(0);
  opacity: 1;
}

.pl-feature-card:nth-child(1).visible {
  transition-delay: 0.1s;
}
.pl-feature-card:nth-child(2).visible {
  transition-delay: 0.2s;
}
.pl-feature-card:nth-child(3).visible {
  transition-delay: 0.3s;
}
.pl-feature-card:nth-child(4).visible {
  transition-delay: 0.4s;
}

.pl-feature-icon {
  font-size: 2.5rem;
  margin-bottom: 20px;
  transition: var(--transition);
}

.pl-feature-title {
  color: var(--secondary-color);
  margin-bottom: 15px;
  font-family: var(--title-font);
  font-weight: 700;
}

.pl-feature-text {
  color: var(--text-color);
  font-family: var(--text-font);
}

.pl-feature-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

.pl-feature-card:hover .pl-feature-icon {
  transform: scale(1.2);
  color: var(--primary-color);
}

/* Sección de cuatrimestres */
.pl-quarters-section {
  padding: 80px 20px;
  background-color: rgba(245, 245, 245, 0.9);
  text-align: center;
}

.pl-quarters-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  max-width: 1200px;
  margin: 0 auto;
}

.pl-quarter-card {
  background: var(--white);
  padding: 30px;
  border-radius: 8px;
  box-shadow: var(--shadow);
  position: relative;
  transition: var(--transition);
  transform: scale(0.95);
  opacity: 0;
}

.pl-quarter-card.visible {
  transform: scale(1);
  opacity: 1;
}

.pl-quarter-card:nth-child(1).visible {
  transition-delay: 0.2s;
}
.pl-quarter-card:nth-child(2).visible {
  transition-delay: 0.4s;
}

.pl-quarter-title {
  color: var(--secondary-color);
  margin-bottom: 15px;
  font-family: var(--title-font);
  font-weight: 700;
}

.pl-quarter-details {
  margin-top: 20px;
}

.pl-quarter-text {
  margin-bottom: 15px;
  color: var(--text-color);
  font-family: var(--text-font);
}

.pl-quarter-card:hover {
  transform: translateY(-5px) scale(1.02);
  box-shadow: 0 15px 30px rgba(0,0,0,0.15);
}

/* Proceso de pasos */
.pl-process-section {
  padding: 80px 20px;
  background-color: var(--white);
  text-align: center;
}

.pl-steps-container {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 30px;
  max-width: 1200px;
  margin: 0 auto;
}

.pl-step {
  flex: 1;
  min-width: 300px;
  max-width: 350px;
  display: flex;
  text-align: left;
  gap: 20px;
  opacity: 0;
  transform: translateX(-20px);
  transition: var(--transition);
}

.pl-step.visible {
  opacity: 1;
  transform: translateX(0);
}

.pl-step:nth-child(1).visible {
  transition-delay: 0.1s;
}
.pl-step:nth-child(2).visible {
  transition-delay: 0.3s;
}
.pl-step:nth-child(3).visible {
  transition-delay: 0.5s;
}
.pl-step:nth-child(4).visible {
  transition-delay: 0.7s;
}
.pl-step:nth-child(5).visible {
  transition-delay: 0.9s;
}

.pl-step-number {
  background-color: var(--primary-color);
  color: white;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: bold;
  flex-shrink: 0;
  transition: var(--transition);
}

.pl-step:hover .pl-step-number {
  background-color: var(--accent-color);
  transform: rotate(15deg) scale(1.1);
}

.pl-step-content {
  flex: 1;
}

.pl-step-title {
  color: var(--primary-color);
  margin-bottom: 10px;
  font-family: var(--title-font);
  font-weight: 700;
}

.pl-step-text {
  color: var(--text-color);
  font-family: var(--text-font);
}

/* Sección de beneficios */
.pl-benefits-section {
  padding: 100px 20px;
  background-color: rgba(245, 245, 245, 0.9);
}

/* Llamado a la acción */
.pl-cta-section {
  padding: 80px 20px;
  text-align: center;
  background-color: var(--white);
}

.pl-cta-text {
  margin-bottom: 30px;
  color: var(--text-color);
  font-size: 1.1rem;
  font-family: var(--text-font);
}

.pl-cta-btn {
  padding: 12px 30px;
  background-color: var(--primary-color);
  color: white;
  border: none;
  border-radius: 4px;
  font-size: 1.1rem;
  cursor: pointer;
  transition: var(--transition);
  min-height: 44px;
  min-width: 44px;
  animation: pl-pulse 2s infinite;
  font-family: var(--text-font);
}

@keyframes pl-pulse {
  0% { transform: scale(1); }
  50% { transform: scale(1.05); }
  100% { transform: scale(1); }
}

.pl-cta-btn:hover {
  background-color: var(--accent-color);
  transform: translateY(-3px) scale(1.05);
  animation: none;
}

/* Estilos para la tabla móvil de plan de estudios */
.pl-mobile-table-section {
  padding: 40px 20px;
  background-color: rgba(245, 245, 245, 0.9);
}

.pl-quarter-selector {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 30px;
}

.pl-quarter-btn {
  padding: 10px 15px;
  background-color: #e8f4ff;
  border: 1px solid #3498db;
  border-radius: 4px;
  color: #2c3e50;
  font-family: 'Havana', sans-serif;
  font-weight: bold;
  cursor: pointer;
  transition: all 0.3s ease;
  min-width: 44px;
  min-height: 44px;
}

.pl-quarter-btn:hover {
  background-color: #d4e9ff;
}

.pl-quarter-btn.active {
  background-color: #3498db;
  color: white;
}

.pl-quarter-cards {
  position: relative;
  min-height: 500px;
}

.pl-quarter-card {
  display: none;
  background: white;
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0 3px 10px rgba(0,0,0,0.1);
}

.pl-quarter-card.active {
  display: block;
  animation: fadeIn 0.5s ease;
}

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

.pl-quarter-card-title {
  color: #2c3e50;
  margin-bottom: 15px;
  text-align: center;
  font-family: 'Georgia', serif;
  font-size: 1.5rem;
}

.pl-quarter-uac {
  text-align: center;
  background-color: #3498db;
  color: white;
  padding: 5px 10px;
  border-radius: 20px;
  margin: 0 auto 20px;
  display: inline-block;
  font-family: 'Havana', sans-serif;
  font-weight: bold;
}

.pl-subjects-list {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.pl-subject-category {
  font-weight: bold;
  color: #2c3e50;
  margin-top: 10px;
  padding-bottom: 5px;
  border-bottom: 1px solid #e0e0e0;
  font-family: 'Georgia', serif;
}

.pl-subject {
  padding: 10px 15px;
  background-color: #f9f9f9;
  border-radius: 4px;
  font-family: 'Havana', sans-serif;
}

/* ===== NUEVA TABLA DE ESCRITORIO MEJORADA ===== */
.pl-desktop-table-section {
  display: none;
  padding: 80px 20px;
  background-color: rgba(245, 245, 245, 0.9);
}

.pl-table-container {
  max-width: 1200px;
  margin: 0 auto;
  background: white;
  border-radius: 8px;
  box-shadow: 0 3px 10px rgba(0,0,0,0.1);
  overflow: hidden;
}

.pl-desktop-quarter-selector {
  display: flex;
  justify-content: center;
  gap: 10px;
  padding: 20px;
  background-color: #f9f9f9;
  border-bottom: 1px solid #e0e0e0;
}

.pl-desktop-quarter-btn {
  padding: 12px 20px;
  background-color: #e8f4ff;
  border: 1px solid #3498db;
  border-radius: 4px;
  color: #2c3e50;
  font-family: 'Havana', sans-serif;
  font-weight: bold;
  cursor: pointer;
  transition: all 0.3s ease;
  min-width: 50px;
  min-height: 44px;
}

.pl-desktop-quarter-btn:hover {
  background-color: #d4e9ff;
}

.pl-desktop-quarter-btn.active {
  background-color: #3498db;
  color: white;
}

.pl-desktop-table-content {
  padding: 20px;
}

.pl-desktop-table-header {
  text-align: center;
  margin-bottom: 20px;
  color: #2c3e50;
  font-family: 'Georgia', serif;
  font-size: 1.5rem;
}

.pl-desktop-subjects-container {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 20px;
}

.pl-desktop-subject-category {
  font-weight: bold;
  color: #2c3e50;
  margin-bottom: 15px;
  padding-bottom: 5px;
  border-bottom: 2px solid #3498db;
  font-family: 'Georgia', serif;
  font-size: 1.2rem;
  grid-column: 1 / -1;
}

.pl-desktop-subject {
  padding: 15px;
  background-color: #f9f9f9;
  border-radius: 8px;
  font-family: 'Havana', sans-serif;
  transition: all 0.3s ease;
  border-left: 4px solid #3498db;
}

.pl-desktop-subject:hover {
  background-color: #e8f4ff;
  transform: translateY(-3px);
  box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.pl-desktop-uac-total {
  text-align: center;
  margin-top: 30px;
  padding: 15px;
  background-color: #e8f4ff;
  border-radius: 8px;
  font-weight: bold;
  font-family: 'Havana', sans-serif;
  grid-column: 1 / -1;
}/* ===== NUEVO DISEÑO DE CARTAS POR CUATRIMESTRE ===== */
.pl-desktop-table-section {
  display: none;
  padding: 80px 20px;
  background-color: rgba(245, 245, 245, 0.9);
}

.pl-quarters-grid-desktop {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 25px;
  max-width: 1200px;
  margin: 0 auto;
}

.pl-quarter-card-desktop {
  background: white;
  padding: 25px;
  border-radius: 12px;
  box-shadow: 0 5px 20px rgba(0,0,0,0.1);
  transition: all 0.3s ease;
  border-top: 5px solid #3498db;
}

.pl-quarter-card-desktop:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(0,0,0,0.15);
}

.pl-quarter-header-desktop {
  text-align: center;
  margin-bottom: 20px;
  padding-bottom: 15px;
  border-bottom: 2px solid #e8f4ff;
}

.pl-quarter-title-desktop {
  color: #2c3e50;
  font-family: 'Georgia', serif;
  font-size: 1.4rem;
  margin-bottom: 8px;
}

.pl-quarter-uac-desktop {
  background-color: #3498db;
  color: white;
  padding: 5px 15px;
  border-radius: 20px;
  font-family: 'Havana', sans-serif;
  font-weight: bold;
  font-size: 0.9rem;
  display: inline-block;
}

.pl-subjects-grid-desktop {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.pl-subject-category-desktop {
  font-weight: bold;
  color: #2c3e50;
  margin-top: 15px;
  margin-bottom: 8px;
  padding-bottom: 5px;
  border-bottom: 1px solid #e0e0e0;
  font-family: 'Georgia', serif;
  font-size: 1.1rem;
}

.pl-subject-item-desktop {
  padding: 12px 15px;
  background-color: #f9f9f9;
  border-radius: 8px;
  font-family: 'Havana', sans-serif;
  transition: all 0.2s ease;
  border-left: 3px solid #3498db;
}

.pl-subject-item-desktop:hover {
  background-color: #e8f4ff;
  transform: translateX(5px);
}

/* ===== MEDIA QUERIES ===== */

/* Versión desktop para la tabla */
@media (min-width: 1024px) {
  .pl-mobile-table-section {
    display: none;
  }
  
  .pl-desktop-table-section {
    display: block;
  }
}

/* Estilos responsivos para móviles */
@media (max-width: 1023px) {
  .pl-desktop-table-section {
    display: none;
  }
}

@media (max-width: 768px) {
  /* Animaciones más rápidas en móvil */
  .pl-section, .pl-feature-card, .pl-quarter-card, .pl-step {
    transition-duration: 0.4s !important;
  }
  
  /* Hero section */
  .pl-hero {
    height: 50vh;
  }
  
  .pl-hero-title {
    font-size: 2rem;
  }
  
  .pl-hero-subtitle {
    font-size: 1rem;
  }
  
  /* Secciones */
  .pl-section, .pl-process-section, .pl-quarters-section, .pl-benefits-section, .pl-cta-section {
    padding: 50px 20px;
  }
  
  .pl-section-title {
    font-size: 1.8rem;
    margin-bottom: 30px;
  }
  
  /* Cards */
  .pl-feature-card, .pl-quarter-card {
    padding: 20px;
  }
  
  .pl-feature-icon {
    font-size: 2rem;
  }
  
  /* Pasos */
  .pl-step {
    flex-direction: column;
    text-align: center;
    min-width: 100%;
  }
  
  .pl-step-number {
    margin: 0 auto 15px;
  }
  
  /* Botón CTA */
  .pl-cta-btn {
    padding: 10px 25px;
    font-size: 1rem;
  }
  
  /* Tabla móvil */
  .pl-quarter-selector {
    gap: 5px;
  }
  
  .pl-quarter-btn {
    padding: 8px 12px;
    font-size: 0.9rem;
  }
  
  .pl-quarter-card {
    padding: 15px;
  }
  
  .pl-quarter-card-title {
    font-size: 1.3rem;
  }
  
  /* Tabla de escritorio */
  .pl-table-section {
    padding: 50px 15px;
  }
  
  .pl-studies-table th,
  .pl-studies-table td {
    padding: 10px 8px;
    font-size: 0.9rem;
  }
}

/* Pequeñas animaciones para touch */
@media (hover: none) {
  .pl-feature-card:hover, .pl-quarter-card:hover, .pl-cta-btn:hover, 
  .pl-step:hover .pl-step-number {
    transform: none !important;
  }
  
  .pl-feature-card:active, .pl-quarter-card:active {
    transform: scale(0.98) !important;
  }
  
  .pl-cta-btn:active {
    background-color: var(--accent-color) !important;
  }
}

/* Tabla de escritorio */
.pl-desktop-table-section {
  display: none;
  padding: 80px 20px;
  background-color: rgba(245, 245, 245, 0.9);
  overflow-x: auto;
}

.pl-table-container {
  max-width: 1200px;
  margin: 0 auto;
  background: white;
  border-radius: 8px;
  box-shadow: 0 3px 10px rgba(0,0,0,0.1);
  overflow: hidden;
}

.pl-studies-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 800px;
}

.pl-studies-table th {
  background-color: #3498db;
  color: white;
  padding: 15px 10px;
  text-align: center;
  font-family: 'Georgia', serif;
  font-weight: bold;
}

.pl-studies-table td {
  padding: 12px 10px;
  border-bottom: 1px solid #e0e0e0;
  font-family: 'Havana', sans-serif;
}

.pl-studies-table tr:last-child td {
  border-bottom: none;
}

.pl-studies-table tr:nth-child(even) {
  background-color: #f9f9f9;
}

.pl-studies-table tr:hover {
  background-color: #f0f8ff;
}

.area-title {
  font-weight: bold;
  background-color: #e8f4ff;
  font-family: 'Georgia', serif;
}

.area-title td {
  text-align: center;
  font-size: 1.1em;
  padding: 15px;
}

.uac-total {
  font-weight: bold;
  text-align: center;
  background-color: #e8f4ff;
}

.pl-studies-table td:not(:first-child) {
  text-align: center;
}

/* ===== MEDIA QUERIES ===== */

/* Versión desktop para la tabla */
@media (min-width: 1024px) {
  .pl-mobile-table-section {
    display: none;
  }
  
  .pl-desktop-table-section {
    display: block;
  }
}

/* Estilos responsivos para móviles */
@media (max-width: 1023px) {
  .pl-desktop-table-section {
    display: none;
  }
  
  .pl-mobile-table-section {
    display: block;
  }
}