/* Basisinstellingen */
* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  font-family: Calibri, Arial, sans-serif;
  font-size: 14px; /* iets groter voor leesbaarheid */
  background-color: #003366; /* wit */
  color: #003366; /* donkerblauw */
  line-height: 1.5;
}

/* Wrapper */
.main-wrapper {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 15px;
}

/* Header netjes centreren met logo en titel */
header {
  background-color: #003366; /* blauw */
  color: #ffffff; /* wit */
  padding: 20px 0;
  display: flex;
  flex-direction: column;   /* logo boven tekst */
  align-items: center;      /* centreren horizontaal */
  justify-content: center;  /* centreren verticaal */
  text-align: center;
}

header img.logo {
  height: 120px;   /* groter logo */
  width: auto;     /* verhouding behouden */
  margin-bottom: 8px; /* ruimte tussen logo en titel */
}

header h2 {
  margin: 0;
  font-size: 22px; /* iets groter voor balans met logo */
  color: #ffffff;
}

/* Container met panels */
.container {
  display: flex;
  flex-wrap: wrap;
  gap: 15px;
  padding: 15px;
  justify-content: center;
  background-color: #003366; /* zijkanten ook blauw */
}

.panel {
  background: #f0f6ff; /* lichtblauw paneel */
  border-radius: 6px;
  box-shadow: 0 1px 4px rgba(0,0,0,0.15);
  padding: 15px;
  flex: 1 1 300px;
  max-width: 360px;
}

/* Koppen en labels */
h3 {
  margin-top: 0;
  margin-bottom: 8px;
  font-size: 16px;
  color: #003366;
}

label {
  font-weight: bold;
  font-size: 13px;
  display: block;
  margin-top: 6px;
  margin-bottom: 3px;
}

/* Inputs en knoppen */
input,
select,
button {
  width: 100%;
  padding: 8px 10px;
  margin-bottom: 12px;
  border-radius: 4px;
  border: 1px solid #003366;
  font-size: 14px;
}

input,
select {
  background-color: #ffffff;
  color: #003366;
}

button {
  background-color: #003366;
  color: #ffffff;
  font-weight: bold;
  cursor: pointer;
  border: none;
  transition: background-color 0.2s ease-in-out;
}

button:hover {
  background-color: #001f4d;
}

/* Progress bar */
progress {
  width: 100%;
  height: 18px;
  margin-bottom: 12px;
}

progress::-webkit-progress-bar {
  background-color: #e6ecf5;
  border-radius: 4px;
}

progress::-webkit-progress-value {
  background-color: #003366;
  border-radius: 4px;
}

progress::-moz-progress-bar {
  background-color: #003366;
  border-radius: 4px;
}

/* Onderdelenlijst */
#partsForm .part-item {
  display: grid;
  grid-template-columns: 20px 1fr;
  align-items: start;
  gap: 6px;
  margin-bottom: 6px;
}

#partsForm input[type=checkbox] {
  margin: 2px 0 0 0;
}

#partsForm .part-label {
  font-size: 13px;
  line-height: 1.3;
  text-align: left;
}

/* Downloadknoppen */
#downloadButtons button {
  margin-bottom: 6px;
  font-size: 14px;
  padding: 8px 10px;
}

/* Geselecteerde onderdelen */
#selectedOverview {
  margin-top: 12px;
  padding: 10px;
  border: 1px solid #cce0ff;
  border-radius: 4px;
  background: #f9fbff;
  font-size: 13px;
}

#selectedOverview h4 {
  margin: 0 0 6px;
  font-size: 14px;
}

/* Zaagresultaat lijst */
.beam-list {
  list-style: none;
  padding-left: 0;
  font-size: 13px;
}

.beam-list li {
  margin-bottom: 4px;
}

/* Footer */
footer {
  background-color: #003366;
  color: #ffffff;
  display: flex;
  flex-direction: column;   /* logo + tekst onder elkaar */
  align-items: center;      /* centreren horizontaal */
  justify-content: center;  /* centreren verticaal */
  gap: 6px;
  padding: 10px 0;
  font-size: 13px;
  font-weight: bold;
  margin-top: 20px;
}

footer img.footer-logo {
  height: 28px;   /* klein logo */
  width: auto;
}

/* Responsiveness */
@media (max-width: 768px) {
  .container {
    flex-direction: column;
    align-items: stretch;
  }
  .panel {
    max-width: 100%;
  }
}