/* ============================================
   NIVELES.PHP - ESTILOS PERSONALIZADOS
   Página de niveles académicos por grado
   ============================================ */

/* ============================================
   VARIABLES
   ============================================ */
:root {
  --color-verde: #056245;
  --color-amarillo: #ffc400;
  --color-verde-hover: #044535;
  --transition-smooth: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.2);
  --shadow-hover: 0 15px 40px rgba(0, 0, 0, 0.3);

  /* Colores por grado */
  --grado-6: #2196f3; /* Azul */
  --grado-7: #4caf50; /* Verde */
  --grado-8: #ff9800; /* Naranja */
  --grado-9: #9c27b0; /* Púrpura */
  --grado-10: #f44336; /* Rojo */
  --grado-11: #ffd700; /* Dorado */
}

/* ============================================
   PÁGINA GENERAL
   ============================================ */
.niveles-page {
  min-height: 100vh;
}

/* ============================================
   HEADER DE LA PÁGINA
   ============================================ */
.niveles-header {
  padding: 80px 0 60px 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.titulo-principal {
  font-size: 3rem;
  font-weight: 700;
  margin: 0 0 30px 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  letter-spacing: 3px;
  text-transform: uppercase;
  position: relative;
}

.titulo-principal::after {
  content: "";
  position: absolute;
  bottom: -20px;
  left: 50%;
  transform: translateX(-50%);
  width: 200px;
  height: 5px;
  background: linear-gradient(
    90deg,
    transparent,
    var(--color-amarillo),
    transparent
  );
}

.titulo-principal i {
  font-size: 4rem !important;
  animation: pulse-school 2s ease-in-out infinite;
}

@keyframes pulse-school {
  0%,
  100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.1);
  }
}

.subtitulo-pagina {
  font-size: 1.3rem;
  max-width: 800px;
  margin: 40px auto 0 auto;
  line-height: 1.8;
  font-style: italic;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.8);
}

/* ============================================
   SECCIÓN DE NIVELES
   ============================================ */
.niveles-section {
  padding: 80px 0 100px 0;
  background: rgba(0, 0, 0, 0.4);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

/* ============================================
   GRID DE NIVELES
   ============================================ */
.niveles-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 30px;
}

/* ============================================
   CARDS DE NIVELES
   ============================================ */
.nivel-card {
  background: rgba(5, 98, 69, 0.2);
  backdrop-filter: blur(15px);
  -webkit-backdrop-filter: blur(15px);
  border-radius: 20px;
  padding: 0;
  box-shadow: var(--shadow-card);
  border: 3px solid rgba(255, 196, 0, 0.3);
  transition: all var(--transition-smooth);
  overflow: hidden;
  position: relative;
  height: 100%;
  display: flex;
  flex-direction: column;
  margin-bottom: 30px;
}

.nivel-card:hover {
  transform: translateY(-15px);
  box-shadow: var(--shadow-hover);
  border-color: var(--color-amarillo);
}

/* Efecto de brillo al hover */
.nivel-card::before {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(
    45deg,
    transparent 30%,
    rgba(255, 255, 255, 0.1) 50%,
    transparent 70%
  );
  transform: rotate(45deg);
  transition: all 0.6s;
  opacity: 0;
  z-index: 1;
}

.nivel-card:hover::before {
  opacity: 1;
  animation: shine 2s infinite;
}

@keyframes shine {
  0% {
    transform: translateX(-100%) translateY(-100%) rotate(45deg);
  }
  100% {
    transform: translateX(100%) translateY(100%) rotate(45deg);
  }
}

/* ============================================
   BADGE DEL GRADO (NÚMERO)
   ============================================ */
.nivel-badge {
  position: absolute;
  top: 20px;
  right: 20px;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.8rem;
  font-weight: 900;
  color: white;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
  z-index: 10;
  transition: all var(--transition-smooth);
}

.nivel-card:hover .nivel-badge {
  transform: scale(1.2) rotate(360deg);
}

/* Colores específicos por grado */
.nivel-badge.grado-6 {
  background: linear-gradient(135deg, var(--grado-6), #1976d2);
}

.nivel-badge.grado-7 {
  background: linear-gradient(135deg, var(--grado-7), #388e3c);
}

.nivel-badge.grado-8 {
  background: linear-gradient(135deg, var(--grado-8), #f57c00);
}

.nivel-badge.grado-9 {
  background: linear-gradient(135deg, var(--grado-9), #7b1fa2);
}

.nivel-badge.grado-10 {
  background: linear-gradient(135deg, var(--grado-10), #d32f2f);
}

.nivel-badge.grado-11 {
  background: linear-gradient(135deg, var(--grado-11), #ffa000);
}

/* Badge destacado (para 10° y 11°) */
.nivel-badge-destacado {
  position: absolute;
  top: 5px;
  right: -43px;
  background: linear-gradient(135deg, var(--color-amarillo), #ffb700);
  color: var(white);
  padding: 12px 45px;
  font-weight: 900;
  font-size: 1.5rem;
  transform: rotate(45deg);
  box-shadow: 0 4px 15px rgba(255, 196, 0, 0.5);
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 8px;
}

.nivel-badge-destacado i {
  font-size: 1.8rem !important;
  animation: pulse-star 1.5s ease-in-out infinite;
}

@keyframes pulse-star {
  0%,
  100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.2);
  }
}

/* Nivel destacado (10° y 11°) */
.nivel-destacado {
  border-color: var(--color-amarillo);
  border-width: 4px;
  background: rgba(255, 196, 0, 0.1);
}

/* ============================================
   HEADER DE LA CARD
   ============================================ */
.nivel-header {
  padding: 60px 30px 30px 30px;
  text-align: center;
  position: relative;
  z-index: 2;
}

/* ============================================
   ICONO DEL NIVEL
   ============================================ */
.nivel-icon {
  width: 100px;
  height: 100px;
  margin: 0 auto 20px auto;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 4px solid white;
  box-shadow:
    0 8px 20px rgba(0, 0, 0, 0.3),
    inset 0 2px 10px rgba(0, 0, 0, 0.2);
  transition: all var(--transition-smooth);
  position: relative;
  z-index: 2;
}

.nivel-card:hover .nivel-icon {
  transform: scale(1.15) rotate(-10deg);
  box-shadow:
    0 12px 30px rgba(0, 0, 0, 0.4),
    inset 0 2px 10px rgba(0, 0, 0, 0.3);
}

.nivel-icon i {
  font-size: 3.5rem !important;
  color: white;
  transition: all var(--transition-smooth);
}

.nivel-card:hover .nivel-icon i {
  transform: scale(1.1);
}

/* Iconos específicos por grado */
.nivel-icon.grado-6-icon {
  background: linear-gradient(135deg, var(--grado-6), #1976d2);
  border-color: var(--grado-6);
}

.nivel-icon.grado-7-icon {
  background: linear-gradient(135deg, var(--grado-7), #388e3c);
  border-color: var(--grado-7);
}

.nivel-icon.grado-8-icon {
  background: linear-gradient(135deg, var(--grado-8), #f57c00);
  border-color: var(--grado-8);
}

.nivel-icon.grado-9-icon {
  background: linear-gradient(135deg, var(--grado-9), #7b1fa2);
  border-color: var(--grado-9);
}

.nivel-icon.grado-10-icon {
  background: linear-gradient(135deg, var(--grado-10), #d32f2f);
  border-color: var(--grado-10);
}

.nivel-icon.grado-11-icon {
  background: linear-gradient(135deg, var(--grado-11), #ffa000);
  border-color: var(--grado-11);
}

/* ============================================
   TÍTULO DEL NIVEL
   ============================================ */
.nivel-header h2 {
  font-size: 2rem;
  font-weight: 700;
  margin: 0 0 10px 0;
  letter-spacing: 1px;
}

.nivel-subtitulo {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.9);
  font-style: italic;
  margin: 0;
  text-align: center;
}

/* ============================================
   CONTENIDO DE LA CARD
   ============================================ */
.nivel-content {
  padding: 30px;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 25px;
  position: relative;
  z-index: 2;
}

.nivel-content h3 {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0 0 20px 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  border-bottom: 2px solid rgba(255, 196, 0, 0.3);
  padding-bottom: 10px;
}

.nivel-content h3 i {
  font-size: 1.8rem !important;
}

/* ============================================
   SECCIONES DE TEMAS
   ============================================ */
.tema-section {
  background: rgba(0, 0, 0, 0.2);
  padding: 20px;
  border-radius: 12px;
  border-left: 4px solid var(--color-amarillo);
  transition: all var(--transition-smooth);
}

.tema-section:hover {
  background: rgba(0, 0, 0, 0.3);
  border-left-width: 6px;
  transform: translateX(5px);
}

.tema-section h4 {
  font-size: 1.2rem;
  font-weight: 700;
  margin: 0 0 15px 0;
  color: var(--color-amarillo);
}

/* ============================================
   LISTAS DE TEMAS
   ============================================ */
.lista-temas {
  list-style: none;
  padding: 0;
  margin: 0;
}

.lista-temas li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 10px 0;
  color: white;
  font-size: 1rem;
  line-height: 1.6;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  transition: all 0.3s ease;
}

.lista-temas li:last-child {
  border-bottom: none;
}

.lista-temas li:hover {
  padding-left: 10px;
  color: var(--color-amarillo);
}

.lista-temas li i {
  color: var(--color-verde);
  flex-shrink: 0;
  margin-top: 3px;
  font-size: 1.2rem !important;
}

.lista-temas li:hover i {
  color: var(--color-amarillo);
}

.lista-temas strong {
  color: var(--color-amarillo);
  font-weight: 700;
}

/* ============================================
   RESUMEN BOX
   ============================================ */
.resumen-box {
  background: rgba(5, 98, 69, 0.3);
  padding: 20px;
  border-radius: 12px;
  border: 2px solid rgba(255, 196, 0, 0.5);
  margin-top: auto;
  transition: all var(--transition-smooth);
}

.resumen-box:hover {
  border-color: var(--color-amarillo);
  background: rgba(5, 98, 69, 0.4);
  box-shadow: 0 4px 15px rgba(255, 196, 0, 0.3);
}

.resumen-box p {
  margin: 0;
  font-size: 1.05rem;
  line-height: 1.8;
}

.resumen-box strong {
  color: var(--color-amarillo);
  font-weight: 700;
  font-size: 1.1rem;
}

.resumen-box.destacado {
  background: linear-gradient(
    135deg,
    rgba(255, 196, 0, 0.2),
    rgba(255, 196, 0, 0.1)
  );
  border-color: var(--color-amarillo);
  border-width: 3px;
}

/* ============================================
   LENGUAJES SECTION (GRADO 11°)
   ============================================ */
.lenguajes-section {
  background: rgba(255, 196, 0, 0.1);
  padding: 25px;
  border-radius: 15px;
  border: 2px solid rgba(255, 196, 0, 0.4);
  margin-top: 20px;
}

.lenguajes-section h4 {
  font-size: 1.4rem;
  font-weight: 700;
  margin: 0 0 20px 0;
}

.lenguajes-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  width: 100%;
}

.lenguaje-item {
  background: rgba(5, 98, 69, 0.3);
  padding: 15px;
  border-radius: 10px;
  text-align: center;
  transition: all var(--transition-smooth);
  border: 2px solid rgba(255, 196, 0, 0.2);
  width: 100%;
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  min-height: 130px;
}

.lenguaje-item:hover {
  transform: translateY(-8px);
  border-color: var(--color-amarillo);
  background: rgba(5, 98, 69, 0.5);
  box-shadow: 0 8px 20px rgba(255, 196, 0, 0.4);
}

.lenguaje-item i {
  font-size: 2.5rem !important;
  color: var(--color-amarillo);
  display: block;
  margin-bottom: 10px;
}

.lenguaje-item span {
  color: white;
  font-weight: 700;
  font-size: 1rem;
}

/* ============================================
   TABLE OF CONTENTS
   ============================================ */
.pinned {
  position: fixed;
  top: 200px;
  right: 20px;
  z-index: 100;
  transition:
    opacity 0.4s ease,
    visibility 0.4s ease;
}

.pinned.hidden {
  opacity: 0;
  visibility: hidden;
}

.toc-wrapper {
  background: rgba(5, 98, 69, 0.9);
  padding: 25px;
  border-radius: 15px;
  box-shadow: var(--shadow-card);
  border: 3px solid var(--color-amarillo);
  backdrop-filter: blur(15px);
  -webkit-backdrop-filter: blur(15px);
  width: 180px;
}

.toc-title {
  font-size: 1.3rem;
  font-weight: 700;
  margin: 0 0 20px 0;
  display: flex;
  align-items: center;
  gap: 10px;
  border-bottom: 3px solid var(--color-amarillo);
  padding-bottom: 15px;
}

.toc-title i {
  font-size: 1.8rem !important;
}

.table-of-contents a {
  color: white !important;
  font-size: 1rem;
  padding: 12px 15px;
  display: flex;
  align-items: center;
  gap: 10px;
  border-radius: 8px;
  transition: all 0.3s ease;
  margin: 5px 0;
}

.table-of-contents a:hover {
  background: rgba(255, 196, 0, 0.2);
  transform: translateX(8px);
  padding-left: 22px;
}

.table-of-contents a.active {
  background: var(--color-amarillo);
  color: var(--color-verde) !important;
  font-weight: 700;
  border-left: 5px solid var(--color-verde);
}

.table-of-contents i {
  font-size: 1.2rem !important;
}

/* ============================================
   RESPONSIVE - TABLET
   ============================================ */
@media (max-width: 992px) {
  .titulo-principal {
    font-size: 2.5rem;
  }

  .niveles-grid {
    gap: 20px;
  }

  .nivel-card {
    margin-bottom: 30px;
  }

  .nivel-icon {
    width: 80px;
    height: 80px;
  }

  .nivel-icon i {
    font-size: 2.8rem !important;
  }

  .nivel-badge {
    width: 50px;
    height: 50px;
    font-size: 1.5rem;
  }

  .lenguajes-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ============================================
   RESPONSIVE - MOBILE
   ============================================ */
@media (max-width: 600px) {
  .niveles-header {
    padding: 60px 0 40px 0;
  }

  .titulo-principal {
    font-size: 1.8rem;
    flex-direction: column;
    gap: 15px;
  }

  .titulo-principal i {
    font-size: 2.5rem !important;
  }

  .subtitulo-pagina {
    font-size: 1.1rem;
    padding: 0 20px;
  }

  .niveles-section {
    padding: 60px 0;
  }

  .nivel-card {
    margin-bottom: 30px;
  }

  .nivel-header {
    padding: 50px 20px 20px 20px;
  }

  .nivel-icon {
    width: 70px;
    height: 70px;
  }

  .nivel-icon i {
    font-size: 2.5rem !important;
  }

  .nivel-badge {
    width: 45px;
    height: 45px;
    font-size: 1.3rem;
    top: 15px;
    right: 15px;
  }

  .nivel-badge-destacado {
    padding: 10px 35px;
    font-size: 1.2rem;
  }

  .nivel-header h2 {
    font-size: 1.6rem;
  }

  .nivel-subtitulo {
    font-size: 1rem;
  }

  .nivel-content {
    padding: 20px 15px;
    gap: 20px;
  }

  .nivel-content h3 {
    font-size: 1.3rem;
  }

  .tema-section {
    padding: 15px;
  }

  .tema-section h4 {
    font-size: 1.1rem;
  }

  .lista-temas li {
    font-size: 0.95rem;
  }

  .resumen-box {
    padding: 15px;
  }

  .resumen-box p {
    font-size: 1rem;
  }

  .lenguajes-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
  }

  .lenguaje-item {
    padding: 12px;
  }

  .lenguaje-item i {
    font-size: 2rem !important;
  }

  .lenguaje-item span {
    font-size: 0.9rem;
  }
}

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

.nivel-card {
  animation: fadeInUp 0.6s ease-out;
}

/* Delays escalonados por grado */
.niveles-grid .col:nth-child(1) .nivel-card {
  animation-delay: 0.1s;
}

.niveles-grid .col:nth-child(2) .nivel-card {
  animation-delay: 0.2s;
}

.niveles-grid .col:nth-child(3) .nivel-card {
  animation-delay: 0.3s;
}

.niveles-grid .col:nth-child(4) .nivel-card {
  animation-delay: 0.4s;
}

.niveles-grid .col:nth-child(5) .nivel-card {
  animation-delay: 0.5s;
}

.niveles-grid .col:nth-child(6) .nivel-card {
  animation-delay: 0.6s;
}

/* ============================================
   ACCESIBILIDAD
   ============================================ */
.nivel-card:focus-within {
  outline: 3px solid var(--color-amarillo);
  outline-offset: 4px;
}

/* ============================================
   OPTIMIZACIONES DE RENDIMIENTO
   ============================================ */
.nivel-card,
.nivel-icon,
.nivel-badge,
.lenguaje-item {
  will-change: transform;
  backface-visibility: hidden;
}

/* ============================================
   SCROLL SUAVE
   ============================================ */
html {
  scroll-behavior: smooth;
}

/* ============================================
   PRINT STYLES
   ============================================ */
@media print {
  .pinned,
  .nivel-badge,
  .nivel-badge-destacado {
    display: none;
  }

  .nivel-card {
    page-break-inside: avoid;
    border: 1px solid #000;
  }

  .nivel-icon {
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }
}