/* Reset básico */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* Cuerpo */
body {
  font-family: Arial, sans-serif;
  background-color: #f4f4f4;
  padding: 0;
  margin: 0;
}

/* Encabezado */
header {
  background-color: #b02f2f;
  color: #fff;
  padding: 20px 0;
  border-bottom: 3px solid #8c1f1f;
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 15px;
  flex-wrap: wrap;
  padding: 20px;
}
.header-container img {
  height: 80px;
  margin-right: 20px;
}

.header-container h1 {
  font-size: 24px;
  font-weight: 700;
  margin: 0;
  color: white;
}

/* Contenedor principal */
main {
  max-width: 800px;
  margin: 40px auto;
  padding: 20px;
}

/* Contenedor del formulario */
.container {
  max-width: 600px;
  margin: 0 auto;
  background: #fff;
  padding: 20px;
  border-radius: 10px;
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
  width: 95%;
}
/* Título */
h2 {
  text-align: center;
  color: #b02f2f;
  margin-bottom: 20px;
}

/* Etiquetas y campos */
label {
  display: block;
  margin-top: 15px;
  font-weight: bold;
  color: #000;
}

input, select {
  width: 100%;
  padding: 10px;
  margin-top: 5px;
  border: 1px solid #ccc;
  border-radius: 6px;
  font-size: 16px;
}

/* Botón */
button {
  width: 100%;
  background-color: #b02f2f;
  color: white;
  padding: 12px;
  margin-top: 20px;
  border: none;
  border-radius: 6px;
  font-size: 16px;
  cursor: pointer;
  font-weight: bold;
  transition: background-color 0.3s ease;
}

button:hover {
  background-color: #8c1f1f;
}

/* Resultado */
.resultado {
  margin-top: 20px;
  padding: 15px;
  background-color: #e9ecef;
  border-radius: 6px;
}

.resultado p {
  margin: 10px 0;
  font-size: 16px;
  font-weight: bold;
  color: #333;
}

/* Responsivo */
@media (max-width: 600px) {
  header .container {
    flex-direction: column;
    text-align: center;
  }

  header img {
    margin: 0 0 10px 0;
  }
}

.form-box {
  max-width: 600px;
  margin: auto;
  background: #fff;
  padding: 20px;
  border-radius: 10px;
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

@media (max-width: 768px) {
  .header-container {
    flex-direction: column;
    text-align: center;
  }

  header img {
    margin: 0 auto 10px;
  }

  form {
    padding: 10px;
  }

  .registro {
    padding: 10px 0;
    border-bottom: 1px solid #ccc;
  }

  .registro:last-child {
    border-bottom: none;
  }

  input, select, button {
    font-size: 16px;
  }

  button[type="submit"],
  #agregar-fila {
    width: 100%;
    margin-top: 10px;
  }

  .resultado {
    padding: 10px;
    font-size: 16px;
  }
  
  /* Contenedor */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

}


:root{
  --space-1:.5rem; --space-2:.75rem; --space-3:1rem; --radius:12px;
}
html{ -webkit-text-size-adjust:100%; text-size-adjust:100%; }
body{ font-size: clamp(15px, 2.3vw, 17px); line-height:1.5; }


header img{ height: clamp(52px, 10vw, 80px); width:auto; }
.header-container{ gap: var(--space-2); padding: var(--space-3); }
.header-container h1{ font-size: clamp(18px, 4.2vw, 24px); }


main{ max-width: 900px; margin: 28px auto; padding: 0 16px; }
.container{ max-width: 680px; width: min(96%, 680px); }


.registro{
  background:#fff;
  border:1px solid #e7e7e7;
  border-radius: var(--radius);
  padding: var(--space-3);
  box-shadow: 0 1px 2px rgba(0,0,0,.05);
  margin-top: var(--space-2);
}
.registro label{ margin-top:.75rem; color:#333; }
.registro input, .registro select{
  border:1px solid #d9d9d9; border-radius:10px; padding:.7rem .9rem;
}
.registro input:focus, .registro select:focus{
  outline: none; border-color:#b02f2f; box-shadow:0 0 0 3px rgba(176,47,47,.12);
}


@media (min-width:480px){
  .registro{
    display:grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3);
  }
 
  .registro .eliminar-fila{ grid-column: 1 / -1; justify-self:end; }
}

.acciones-form{ display:grid; gap:.6rem; }
#agregar-fila{
  background:#eee; color:#222; border:1px solid #ddd;
  border-radius:999px; padding:.9rem 1rem;
}
button[type="submit"]{
  border-radius:999px;
}
@media (min-width:560px){
  .acciones-form{ grid-template-columns: 1fr 1fr; }
}

.resultado{
  background:#fff; border:1px solid #eee; border-radius: var(--radius);
  padding: var(--space-3); box-shadow:0 1px 2px rgba(0,0,0,.05);
}

@media (pointer:coarse){
  input, select, button{ min-height:44px; }
  input[type="number"]{ font-size:16px; }
}

input[type="number"]::-webkit-outer-spin-button,
input[type="number"]::-webkit-inner-spin-button{ -webkit-appearance:none; margin:0; }
input[type="number"]{ -moz-appearance:textfield; }

button{ transition: filter .2s ease; }
button:hover{ filter:brightness(.96); }