body {
  font-family: Arial, sans-serif;
  margin: 20px;
  background: #f4f4f4;
  color: #222;
}

header {
  text-align: center;
  margin-bottom: 20px;
}

header h1 {
  margin: 0;
  color: #333;
}

header p {
  color: #555;
  margin-top: 6px;
  font-weight:600;
}

/* input area */
.input-section {
  display:flex;
  align-items:center;
  gap:8px;
  margin-bottom: 18px;
}
.input-section input[type="number"]{
  padding:6px 8px;
  width:120px;
  border-radius:6px;
  border:1px solid #ccc;
}
.input-section button{
  padding:8px 10px;
  border-radius:6px;
  border:none;
  background:#1976d2;
  color:#fff;
  cursor:pointer;
}

/* section card */
section {
  background: white;
  padding: 10px;
  margin-bottom: 20px;
  border-radius: 8px;
  box-shadow: 0 0 5px rgba(0,0,0,0.08);
}

h2 {
  margin-top: 0;
  color: #222;
  font-size:16px;
}

/* chart sizing: MUCHO más altos */
canvas {
  width: 100% !important;
  height: 480px !important;   /* gráficos grandes y alargados */
}

/* table styling */
table {
  border-collapse: collapse;
  margin: 10px 0;
  width: 100%;
  font-size: 0.9em;
}

table, th, td {
  border: 1px solid #ddd;
  text-align: center;
  padding: 6px;
  white-space: nowrap;
}

th {
  background: #f0f0f0;
  font-weight:700;
}

/* grid layout: 2 columnas */
.container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.col section {
  margin-bottom: 20px;
}

/* responsive: 1 columna en pantallas pequeñas */
@media (max-width: 900px) {
  .container {
    grid-template-columns: 1fr;
  }

  /* altura menor en móvil para no forzar scroll excesivo */
  canvas {
    height: 320px !important;
  }
}