/* ============================================
   ESTILOS SEMESTRES - UCV (Optimizado)
   ============================================ */

:root {
  --subject-gap: 0.75rem;
  --box-padding: 1.25rem;
  --box-min-height: 100px;
}

/* ============================================
   LISTA DE MATERIAS & TARJETAS
   ============================================ */

.subject-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--subject-gap);
  width: 100%;
  margin-bottom: var(--space-8);
}

.subject-item {
  width: 100%;
  min-width: 0;
  animation: fadeInUp 0.5s ease-out backwards;
}

.subject-item:nth-child(1) { animation-delay: 0.05s; }
.subject-item:nth-child(2) { animation-delay: 0.1s; }
.subject-item:nth-child(3) { animation-delay: 0.15s; }
.subject-item:nth-child(4) { animation-delay: 0.2s; }

.box {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: var(--box-min-height);
  padding: var(--box-padding);
  background: var(--bg-card, #FFFFFF);
  color: var(--section-title-color, #0E4B77);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 600;
  text-align: center;
  line-height: 1.4;
  border-radius: var(--radius-lg);
  border: 2px solid var(--border-card, #E2E8F0);
  box-shadow: var(--shadow-main, 0 1px 2px 0 rgba(0, 0, 0, 0.05));
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
  word-break: break-word;
  hyphens: auto;
}

.box::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--section-title-color, #0E4B77);
  transform: scaleX(0);
  transition: transform 0.3s ease;
}

.box:hover,
.box:active {
  border-color: var(--section-title-color, #0E4B77);
  background: var(--bg-card-hover, #F8FAFC);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
  color: var(--section-title-color, #0E4B77);
}

.box:hover::before,
.box:active::before {
  transform: scaleX(1);
}

.box.gris {
  color: var(--text-secondary, #64748B);
  border-color: var(--border-card, #E2E8F0);
  background: var(--bg-card, #F8FAFC);
}

.box.gris::before {
  background: var(--accent-sky);
}

.box.gris:hover,
.box.gris:active {
  border-color: var(--accent-sky);
  color: var(--section-title-color, #334155);
  background: var(--bg-card-hover, #FFFFFF);
}

/* ============================================
   SECCIÓN DE EVALUACIONES (FECHAS)
   ============================================ */

.evaluaciones-section {
  width: 100%;
  background: var(--bg-card, #FFFFFF);
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-card, #E2E8F0);
  box-shadow: var(--shadow-main);
  padding: var(--space-5) var(--space-4);
  position: relative;
  overflow: hidden;
  transition: background-color 0.3s ease, border-color 0.3s ease;
}

.evaluaciones-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--ucv-blue-primary), var(--accent-sky));
}

.evaluaciones-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--section-title-color, #0E4B77);
  margin-bottom: var(--space-5);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding-top: var(--space-2);
}

.evaluaciones-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
}

.materia-card {
  background: var(--bg-card, #F8FAFC);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  border: 1px solid var(--border-card, #E2E8F0);
  transition: all 0.3s ease;
  animation: fadeInUp 0.5s ease-out backwards;
}

.materia-card:nth-child(1) { animation-delay: 0.1s; }
.materia-card:nth-child(2) { animation-delay: 0.2s; }
.materia-card:nth-child(3) { animation-delay: 0.3s; }
.materia-card:nth-child(4) { animation-delay: 0.4s; }

.materia-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
  border-color: var(--border-card-hover, #CBD5E1);
}

.materia-nombre {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--section-title-color, #0E4B77);
  margin-bottom: var(--space-3);
  padding-bottom: var(--space-2);
  border-bottom: 2px solid var(--border-card, #E2E8F0);
  text-transform: uppercase;
  letter-spacing: 0.025em;
  line-height: 1.3;
}

.evaluacion-tipo {
  margin-bottom: var(--space-3);
}

.evaluacion-tipo:last-child {
  margin-bottom: 0;
}

.evaluacion-tipo h5 {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted, #64748B);
  margin-bottom: var(--space-2);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.evaluacion-tipo ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.evaluacion-tipo li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-2) var(--space-3);
  background: var(--bg-card, #FFFFFF);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-card, #E2E8F0);
  font-size: 0.875rem;
  transition: all 0.2s ease;
}

.evaluacion-tipo li:hover {
  background: var(--bg-card-hover, #F8FAFC);
  border-color: var(--border-card-hover, #CBD5E1);
}

.fecha {
  font-weight: 500;
  color: var(--text-secondary, #334155);
}

.porcentaje {
  font-weight: 700;
  color: var(--section-title-color, #0E4B77);
  background: rgba(14, 165, 233, 0.12);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  white-space: nowrap;
}

/* ============================================
   MEDIA QUERIES (RESPONSIVE)
   ============================================ */

/* Móviles muy pequeños */
@media (max-width: 359px) {
  .box {
    font-size: 0.875rem;
    padding: var(--space-3);
    min-height: 90px;
  }
  .evaluacion-tipo li {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-1);
  }
  .porcentaje {
    align-self: flex-end;
  }
}

/* Landscape en móviles */
@media (max-height: 500px) and (orientation: landscape) and (max-width: 767px) {
  .subject-list { grid-template-columns: repeat(2, 1fr); }
  .box { min-height: 80px; padding: var(--space-3); font-size: 0.9rem; }
  .evaluaciones-grid { grid-template-columns: repeat(2, 1fr); }
}

/* Tablet (640px+) */
@media (min-width: 640px) {
  :root {
    --subject-gap: 1rem;
    --box-padding: 1.5rem;
    --box-min-height: 110px;
  }
  .subject-list { grid-template-columns: repeat(2, 1fr); gap: var(--space-4); }
  .box { font-size: 1rem; border-radius: var(--radius-xl); }
  .box::before { height: 4px; }
  .evaluaciones-section { padding: var(--space-6); }
  .evaluaciones-title { font-size: 1.25rem; margin-bottom: var(--space-6); }
  .evaluaciones-grid { grid-template-columns: repeat(2, 1fr); gap: var(--space-5); }
  .materia-nombre { font-size: 1rem; }
  .evaluacion-tipo h5 { font-size: 0.85rem; }
  .evaluacion-tipo li { font-size: 0.9rem; }
}

/* Tablet grande (768px+) */
@media (min-width: 768px) {
  :root { --box-min-height: 120px; }
  .subject-list { grid-template-columns: repeat(4, 1fr); gap: var(--space-5); }
  .box { font-size: 1.05rem; padding: var(--space-5) var(--space-4); }
  .evaluaciones-grid { gap: var(--space-6); }
  .materia-card { padding: var(--space-5); }
}

/* Desktop (1024px+) */
@media (min-width: 1024px) {
  :root {
    --box-padding: 1.75rem;
    --box-min-height: 130px;
  }
  .evaluaciones-grid { grid-template-columns: repeat(4, 1fr); }
  .box { font-size: 1.125rem; }
  .evaluaciones-section { padding: var(--space-8); }
}

/* Pantallas muy grandes (1280px+) */
@media (min-width: 1280px) {
  .subject-list { gap: var(--space-6); }
  .box { min-height: 140px; }
  .evaluaciones-grid { gap: var(--space-8); }
}

/* ============================================
   ACCESIBILIDAD Y ANIMACIONES
   ============================================ */

@media (hover: none) {
  .box:hover { transform: none; box-shadow: var(--shadow-sm); }
  .box:active { transform: scale(0.98); background: var(--gray-50); transition: transform 0.1s ease; }
  .materia-card:hover { transform: none; }
}

.materia-card:focus-visible {
  outline: 3px solid var(--accent-blue);
  outline-offset: 2px;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}