:root {
  --primary-color: #0d6efd;
  --primary-hover: #0b5ed7;
  --bg-color: #f4f6f9;
  --card-bg: #ffffff;
  --text-main: #212529;
  --text-muted: #6c757d;
  --border-color: #dee2e6;
  --success-color: #198754;
  --warning-color: #dc3545;
  --badge-bg: #e7f1ff;
  --badge-text: #0c63e4;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
}

body {
  background-color: var(--bg-color);
  color: var(--text-main);
  padding: 20px 10px;
}

/* Encabezado Principal */
.main-header {
  text-align: center;
  margin-bottom: 25px;
}

.main-header h1 {
  font-size: 1.8rem;
  color: #1b2a4a;
}

.main-header p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* Contenedor Principal */
.container {
  max-width: 900px;
  margin: 0 auto;
}

/* Tarjetas */
.card {
  background: var(--card-bg);
  border-radius: 10px;
  padding: 20px;
  margin-bottom: 20px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
  border: 1px solid var(--border-color);
}

.card h2 {
  font-size: 1.2rem;
  color: #1b2a4a;
  margin-bottom: 15px;
}

.card-header-inline {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 15px;
  flex-wrap: wrap;
  gap: 10px;
}

.badge {
  background-color: var(--badge-bg);
  color: var(--badge-text);
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.9rem;
}

/* Componente Teórico (Grid de Exámenes) */
.theory-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 15px;
}

.form-group {
  display: flex;
  flex-direction: column;
}

.form-group label {
  font-size: 0.88rem;
  font-weight: 600;
  margin-bottom: 6px;
}

/* Cabecera y filas generales (Laboratorio: 5 columnas) */
.session-header-labels,
.session-row {
  display: grid;
  grid-template-columns: 80px repeat(4, 1fr);
  gap: 8px;
  font-size: 0.78rem;
  font-weight: bold;
  color: var(--text-muted);
  text-transform: uppercase;
  padding: 0 12px 6px 12px;
  border-bottom: 2px solid var(--border-color);
  margin-bottom: 8px;
  text-align: center;
}

.session-header-labels span:first-child,
.session-row span:first-child {
  text-align: left;
}

/* Regla específica para Seminario en escritorio */
.session-header-seminario,
#seminarios-container .session-row {
  grid-template-columns: 100px 1fr !important;
}

/* Filas de Sesiones (1 a 14) */
.session-row {
  display: grid;
  grid-template-columns: 80px repeat(4, 1fr);
  gap: 8px;
  align-items: center;
  background-color: #f8f9fa;
  padding: 8px 12px;
  margin-bottom: 6px;
  border-radius: 6px;
  border: 1px solid #e9ecef;
}

.session-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: #495057;
}

.form-group-sub {
  display: flex;
  flex-direction: column;
}

.form-group-sub label {
  display: none;
}

/* Inputs de Texto/Número */
input[type="number"] {
  width: 100%;
  padding: 6px 8px;
  border: 1px solid #ced4da;
  border-radius: 4px;
  font-size: 0.9rem;
  text-align: center;
  transition: border-color 0.2s, box-shadow 0.2s;
}

input[type="number"]:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.25);
}

/* Acciones y Botón */
.actions {
  text-align: center;
  margin: 20px 0;
}

.btn-primary {
  background-color: var(--primary-color);
  color: white;
  border: none;
  padding: 12px 30px;
  font-size: 1rem;
  font-weight: 600;
  border-radius: 6px;
  cursor: pointer;
  transition: background-color 0.2s;
  width: 100%;
  max-width: 300px;
}

.btn-primary:hover {
  background-color: var(--primary-hover);
}

/* Resumen de Resultados */
.results-card {
  border-top: 4px solid var(--primary-color);
}

.results-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 15px;
  margin-bottom: 20px;
}

.result-box {
  background-color: #f8f9fa;
  padding: 15px;
  border-radius: 8px;
  text-align: center;
  border: 1px solid #e9ecef;
}

.result-box h3 {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.score {
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--text-main);
  margin-bottom: 4px;
}

.status {
  font-size: 0.8rem;
  font-weight: 600;
}

.divider {
  border: 0;
  height: 1px;
  background: var(--border-color);
  margin: 20px 0;
}

.final-score-box {
  display: flex;
  justify-content: space-around;
  align-items: center;
  text-align: center;
  flex-wrap: wrap;
  gap: 15px;
  padding: 10px 0;
}

.final-score {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--primary-color);
}

.status-badge {
  font-size: 1.1rem;
  font-weight: 700;
  padding: 6px 16px;
  border-radius: 4px;
}

/* Responsive para Celulares */
@media (max-width: 600px) {
  .session-header-labels {
    display: none;
  }

  /* Disposición estándar de tarjetas en celular para Laboratorio */
  .session-row {
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    padding: 12px;
  }

  .session-label {
    grid-column: span 2;
    border-bottom: 1px dashed #ced4da;
    padding-bottom: 4px;
    margin-bottom: 4px;
    text-align: center !important;
  }

  .form-group-sub label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: 2px;
    text-align: center;
  }

  /* ESTRUCTURA CENTRADA EXCLUSIVA PARA SEMINARIO EN MÓVIL */
  #seminarios-container .session-row {
    display: grid !important;
    grid-template-columns: 1fr !important;
    justify-items: center !important;
    align-items: center !important;
    text-align: center !important;
  }

  #seminarios-container .session-label {
    grid-column: span 1 !important;
    width: 100% !important;
    text-align: center !important;
  }

  #seminarios-container .form-group-sub {
    display: flex !important;
    flex-direction: column !important;
    align-items: center !important;
    justify-content: center !important;
    width: 100% !important;
    max-width: 200px !important;
    margin: 0 auto !important;
  }

  #seminarios-container .form-group-sub label {
    width: 100% !important;
    text-align: center !important;
  }

  #seminarios-container .form-group-sub input {
    width: 100% !important;
    text-align: center !important;
  }
}

/* Pie de Página */
.main-footer {
  text-align: center;
  margin-top: 40px;
  padding: 20px 0;
  color: var(--text-muted);
  font-size: 0.95rem;
  border-top: 1px solid var(--border-color);
}

.main-footer strong {
  color: var(--primary-color);
  font-weight: 700;
}

/* Texto vertical flotante */
.side-text-vertical {
  position: fixed;
  top: 50%;
  transform: translateY(-50%);
  font-weight: 800;
  font-size: 1.6rem;
  color: var(--primary-color, #1a237e);
  writing-mode: vertical-rl;
  letter-spacing: 2px;
  user-select: none;
  z-index: 100;
  opacity: 0.85;
}

.side-left {
  left: 120px;
  transform: translateY(-50%) rotate(180deg);
}

.side-right {
  right: 120px;
}

@media (max-width: 1200px) {
  .side-text-vertical {
    display: none;
  }
}