html, body {
  margin: 0;
  padding: 0;
  height: 100%;
}
body {
  font-family: "Helvetica", Arial, sans-serif;
  background: linear-gradient(to bottom right, #fdf3c1, #c2d9f0, #cce3d3);
  background-attachment: fixed;
  color: #333;
}

.container {
  max-width: 900px;
  margin: 20px auto;
  padding: 20px;
}

.form-section,
.recibo-container {
  background: rgba(255,255,255,0.7);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid #aaa;
  border-radius: 5px;
  padding: 20px 30px;
  margin-bottom: 20px;
  box-shadow: 0 0 10px rgba(0,0,0,0.15);
}

.form-section h2,
.descuentos-cargos h2,
.programas-adicionales h2,
.acuerdo-pago h2 {
  color: #003f87;
  font-weight: 700;
  margin-bottom: 10px;
}

.form-section h3 {
  color: #003f87;
  margin-top: 1rem;
  margin-bottom: 0.5rem;
}

.form-group {
  margin-bottom: 1rem;
  display: flex;
  flex-direction: column;
}
.form-group label {
  margin-bottom: 0.3rem;
  font-weight: 600;
  color: #333;
}
.form-group input,
.form-group select {
  padding: 0.5rem;
  border: 1px solid #bbb;
  border-radius: 4px;
  font-size: 1rem;
}

/* Botones */
button[type="submit"],
button[type="button"],
.pdf-button {
  background: #003f87;
  color: #fff;
  padding: 0.7rem 1.2rem;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  max-width: 250px;
  margin-top: 5px;
  font-weight: 600;
}
button:hover,
.pdf-button:hover {
  background: #002b5c;
}

/* Filas de estudiantes, descuentos, programas */
.student-row,
.discount-row,
.extra-program-row {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}
.student-row select,
.discount-row select,
.extra-program-row select,
.extra-program-row input {
  flex: 1;
}
.discount-row input {
  flex: 2;
}

/* Ajuste de color para la "X" de eliminar */
.btnRemoveStudent,
.discount-row .btnRemove,
.extra-program-row .btnRemove {
  color: #ff6995;
  font-weight: bold;
  border: none;
  background: transparent;
  cursor: pointer;
}

/* Encabezado del recibo */
.recibo-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}
.header-left {
  display: flex;
  align-items: center;
}
.logo-colegio {
  width: 200px;
  height: auto;
  margin-right: 10px;
}
.header-right {
  text-align: right;
}

/* Título principal */
h1 {
  font-size: 1.4rem;
  margin-bottom: 5px;
  color: #003f87;
  border-bottom: 2px solid #003f87;
  display: inline-block;
  padding-bottom: 0.3rem;
}

.anio-escolar {
  font-size: 1rem;
  margin-bottom: 20px;
  color: #555;
}
.datos-principales {
  font-size: 1rem;
  margin-bottom: 20px;
  color: #333;
}
.datos-principales div {
  margin: 5px 0;
}

/* Tablas */
.descuentos-cargos table,
.programas-adicionales table,
.acuerdo-pago table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 10px;
  font-size: 0.95rem;
}
.descuentos-cargos table th,
.descuentos-cargos table td,
.programas-adicionales table th,
.programas-adicionales table td,
.acuerdo-pago table th,
.acuerdo-pago table td {
  border: 1px solid #ccc;
  padding: 8px;
  text-align: left;
}

.separator {
  border: none;
  height: 1px;
  background: #bbb;
  margin: 10px 0;
}

.totales-descuentos,
.totales-extras,
.totales-pago {
  text-align: right;
  margin-top: 10px;
}
.totales-descuentos div,
.totales-extras div,
.totales-pago div {
  margin: 5px 0;
  font-size: 1rem;
  font-weight: 600;
}

/* Botón PDF */
.acciones {
  text-align: center;
}

/* Ajuste responsivo */
@media (max-width: 600px) {
  .student-row,
  .discount-row,
  .extra-program-row {
    flex-direction: column;
    gap: 0;
  }
  button[type="submit"],
  button[type="button"],
  .pdf-button {
    width: 100%;
    max-width: 100%;
  }
}