:root {
  --kleur-primair: #2563eb;
  --kleur-primair-hover: #1d4ed8;
  --kleur-groen: #16a34a;
  --kleur-groen-licht: #dcfce7;
  --kleur-achtergrond: #f1f5f9;
  --kleur-kaart: #ffffff;
  --kleur-rand: #e2e8f0;
  --kleur-tekst: #1e293b;
  --kleur-tekst-zacht: #64748b;
  --kleur-rood: #dc2626;
  --kleur-rood-hover: #b91c1c;
  --radius: 12px;
  --schaduw: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.04);
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--kleur-achtergrond);
  color: var(--kleur-tekst);
  line-height: 1.5;
  min-height: 100vh;
}

header {
  background: var(--kleur-primair);
  color: white;
  padding: 24px 32px;
}

.header-links {
  display: flex;
  align-items: center;
  gap: 20px;
}

.header-branding {
  flex: 1;
  align-self: flex-start;
}

.header-disclaimer {
  flex: 1;
  display: flex;
  justify-content: center;
}

.header-disclaimer-inner {
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.22);
  border-radius: 8px;
  padding: 9px 14px;
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.88);
  line-height: 1.45;
  text-align: center;
  max-width: 360px;
}

.disclaimer-icon {
  display: block;
  font-size: 1rem;
  margin-bottom: 4px;
  opacity: 0.9;
}

header h1 {
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.header-sub {
  margin-top: 4px;
  opacity: 0.85;
  font-size: 0.95rem;
}

.taal-switcher {
  flex: 1;
  display: flex;
  justify-content: flex-end;
  gap: 4px;
  flex-shrink: 0;
  align-self: flex-start;
  margin-top: 2px;
}

.taal-btn {
  background: rgba(255, 255, 255, 0.15);
  color: white;
  border: 1px solid rgba(255, 255, 255, 0.35);
  padding: 5px 11px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  transition: all 0.15s;
}

.taal-btn:hover {
  background: rgba(255, 255, 255, 0.28);
}

.taal-btn.actief {
  background: white;
  color: var(--kleur-primair);
  border-color: white;
}

main {
  max-width: 1600px;
  margin: 0 auto;
  padding: 28px 20px 48px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.card {
  background: var(--kleur-kaart);
  border: 1px solid var(--kleur-rand);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--schaduw);
}

.card h2 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 16px;
  color: var(--kleur-tekst);
}

/* Verbruik */
.verbruik-groep {
  margin-bottom: 16px;
}

.verbruik-groep:last-child {
  margin-bottom: 0;
}

.verbruik-groep-label {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--kleur-tekst-zacht);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 8px;
  padding-bottom: 5px;
  border-bottom: 1px solid var(--kleur-rand);
}

.verbruik-inputs {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
}

/* Formulier */
.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
}

.form-grid-top {
  margin-bottom: 20px;
}

/* Form secties */
.form-sectie {
  margin-bottom: 20px;
}

.form-sectie-label {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--kleur-tekst-zacht);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 10px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--kleur-rand);
}

/* Tarief drieluik: totaal = levering + energiebelasting */
.tarief-drieluik {
  display: flex;
  align-items: flex-end;
  gap: 8px;
  flex-wrap: wrap;
}

.tarief-drieluik .input-group {
  flex: 1;
  min-width: 130px;
}

.tarief-operator {
  padding-bottom: 10px;
  font-size: 1rem;
  font-weight: 600;
  color: var(--kleur-tekst-zacht);
  flex-shrink: 0;
  line-height: 1;
  user-select: none;
}

/* Auto-berekend veld */
input.berekend {
  background: #eff6ff;
  border-color: var(--kleur-primair);
  color: var(--kleur-primair);
}

input.berekend:focus {
  background: white;
  color: var(--kleur-tekst);
}

/* Dag/jaar wrapper */
.dag-jaar-wrapper {
  display: flex;
  gap: 6px;
}

.dag-jaar-wrapper input {
  flex: 1;
  min-width: 0;
}

.dag-jaar-wrapper select {
  flex-shrink: 0;
  width: auto;
}

/* Bewerkmelding banner */
.bewerk-banner {
  display: flex;
  align-items: center;
  gap: 6px;
  background: #fef9c3;
  border: 1px solid #fde047;
  border-radius: 8px;
  padding: 10px 14px;
  margin-bottom: 16px;
  font-size: 0.88rem;
  color: #713f12;
}

/* Actieknoppen onder het formulier */
.form-acties {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 4px;
}

.btn-secondary {
  background: none;
  color: var(--kleur-tekst-zacht);
  border: 1px solid var(--kleur-rand);
  padding: 10px 20px;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s;
}

.btn-secondary:hover {
  background: #f1f5f9;
  border-color: var(--kleur-tekst-zacht);
  color: var(--kleur-tekst);
}

.input-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.input-group label {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--kleur-tekst-zacht);
}

.required {
  color: var(--kleur-rood);
}

input[type="text"],
input[type="number"],
select {
  padding: 9px 12px;
  border: 1px solid var(--kleur-rand);
  border-radius: 8px;
  font-size: 0.95rem;
  color: var(--kleur-tekst);
  background: white;
  transition: border-color 0.15s;
  width: 100%;
}

input[type="text"]:focus,
input[type="number"]:focus,
select:focus {
  outline: none;
  border-color: var(--kleur-primair);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

.btn-primary {
  background: var(--kleur-primair);
  color: white;
  border: none;
  padding: 10px 20px;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.15s;
}

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

/* Lege melding */
.leeg-melding {
  text-align: center;
  color: var(--kleur-tekst-zacht);
  padding: 32px 0;
  font-size: 0.95rem;
}

/* Tabel */
.tabel-scroll {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

thead th {
  text-align: left;
  padding: 10px 12px;
  background: #f8fafc;
  border-bottom: 2px solid var(--kleur-rand);
  font-weight: 600;
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--kleur-tekst-zacht);
  white-space: nowrap;
}

tbody tr {
  border-bottom: 1px solid var(--kleur-rand);
  transition: background 0.1s;
}

tbody tr:hover {
  background: #f8fafc;
}

tbody td {
  padding: 12px 12px;
  vertical-align: middle;
}

tbody tr.goedkoopste {
  background: var(--kleur-groen-licht);
}

tbody tr.goedkoopste:hover {
  background: #bbf7d0;
}

.badge-goedkoopste {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: var(--kleur-groen);
  color: white;
  font-size: 0.72rem;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 99px;
  margin-left: 6px;
  vertical-align: middle;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.maandbedrag {
  font-weight: 700;
  font-size: 1rem;
  color: var(--kleur-tekst);
}

.jaarbedrag {
  color: var(--kleur-tekst-zacht);
  font-size: 0.88rem;
}

/* Tabel actiekolom */
.tabel-acties {
  display: flex;
  gap: 4px;
  align-items: center;
}

.bewerk-btn {
  background: none;
  border: 1px solid var(--kleur-rand);
  color: var(--kleur-tekst-zacht);
  width: 30px;
  height: 30px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s;
}

.bewerk-btn:hover {
  background: #eff6ff;
  border-color: var(--kleur-primair);
  color: var(--kleur-primair);
}

.verwijder-btn {
  background: none;
  border: 1px solid var(--kleur-rand);
  color: var(--kleur-tekst-zacht);
  width: 30px;
  height: 30px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s;
}

.verwijder-btn:hover {
  background: #fee2e2;
  border-color: var(--kleur-rood);
  color: var(--kleur-rood);
}

/* PDF upload gebied */
.pdf-upload-gebied {
  display: flex;
  align-items: center;
  gap: 12px;
  border: 2px dashed var(--kleur-rand);
  border-radius: 10px;
  padding: 12px 16px;
  margin-bottom: 20px;
  transition: border-color 0.15s, background 0.15s;
  cursor: pointer;
}

.pdf-upload-gebied:hover,
.pdf-upload-gebied.dragover {
  border-color: var(--kleur-primair);
  background: #eff6ff;
}

.pdf-upload-gebied.heeft-bestand {
  border-style: solid;
  border-color: var(--kleur-groen);
  background: var(--kleur-groen-licht);
}

.pdf-upload-label {
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
  flex: 1;
}

.pdf-icoon {
  font-size: 1.4rem;
  line-height: 1;
  flex-shrink: 0;
}

.pdf-upload-tekst {
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.pdf-upload-tekst > span {
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--kleur-tekst);
}

.pdf-upload-tekst small {
  font-size: 0.78rem;
  color: var(--kleur-tekst-zacht);
}

.pdf-status {
  font-size: 0.82rem;
  color: var(--kleur-tekst-zacht);
  flex-shrink: 0;
  font-style: italic;
}

/* Offerte + PDF zij-aan-zij layout */
.offerte-layout {
  display: flex;
  gap: 20px;
  align-items: flex-start;
}

.offerte-layout > form {
  flex: 1;
  min-width: 0;
}

/* PDF tekst panel */
.pdf-panel {
  width: 320px;
  flex-shrink: 0;
  position: sticky;
  top: 20px;
  max-height: calc(100vh - 80px);
  display: flex;
  flex-direction: column;
  border: 1px solid var(--kleur-rand);
  border-radius: 10px;
  overflow: hidden;
  background: #f8fafc;
}

.pdf-panel-hoofd {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 14px;
  border-bottom: 1px solid var(--kleur-rand);
  background: white;
  font-size: 0.85rem;
  font-weight: 600;
  flex-shrink: 0;
}

.pdf-wis-btn {
  background: none;
  border: none;
  color: var(--kleur-tekst-zacht);
  font-size: 0.8rem;
  cursor: pointer;
  padding: 3px 7px;
  border-radius: 5px;
  transition: color 0.15s, background 0.15s;
}

.pdf-wis-btn:hover {
  color: var(--kleur-rood);
  background: #fee2e2;
}

.pdf-kopieer-hint {
  padding: 6px 14px;
  font-size: 0.74rem;
  color: var(--kleur-tekst-zacht);
  border-bottom: 1px solid var(--kleur-rand);
  background: white;
  flex-shrink: 0;
}

.pdf-tekst {
  overflow-y: auto;
  padding: 12px 14px;
  font-size: 0.78rem;
  line-height: 1.65;
  color: var(--kleur-tekst);
  flex: 1;
  word-break: break-word;
  white-space: pre-wrap;
}

.pdf-getal {
  background: #fef9c3;
  border-radius: 3px;
  padding: 1px 3px;
  cursor: pointer;
  font-weight: 600;
  transition: background 0.1s;
}

.pdf-getal:hover {
  background: #fde047;
}

.pdf-getal.gekopieerd {
  background: #bbf7d0;
}

@media (max-width: 960px) {
  .offerte-layout {
    flex-direction: column;
  }

  .pdf-panel {
    width: 100%;
    position: static;
    max-height: 280px;
  }
}

/* Toggle switch */
.toggle-label {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  user-select: none;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--kleur-tekst);
}

.toggle-label input[type="checkbox"] {
  display: none;
}

.toggle-switch {
  position: relative;
  width: 40px;
  height: 22px;
  background: var(--kleur-rand);
  border: 1px solid #cbd5e1;
  border-radius: 99px;
  flex-shrink: 0;
  transition: background 0.2s, border-color 0.2s;
}

.toggle-switch::after {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 16px;
  height: 16px;
  background: white;
  border-radius: 50%;
  box-shadow: 0 1px 3px rgba(0,0,0,0.2);
  transition: transform 0.2s;
}

.toggle-label input:checked + .toggle-switch {
  background: var(--kleur-primair);
  border-color: var(--kleur-primair);
}

.toggle-label input:checked + .toggle-switch::after {
  transform: translateX(18px);
}

/* Toelichting berekening */
.toelichting {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--kleur-rand);
}

.toelichting-titel {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--kleur-tekst-zacht);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 12px;
}

.toelichting-lijst {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.toelichting-item dt {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--kleur-tekst);
  margin-bottom: 3px;
}

.toelichting-item dd {
  font-size: 0.85rem;
  color: var(--kleur-tekst-zacht);
  margin-left: 0;
}

.toelichting-item dd code {
  font-family: 'Menlo', 'Consolas', monospace;
  font-size: 0.82rem;
  background: #f1f5f9;
  padding: 2px 6px;
  border-radius: 4px;
  color: var(--kleur-tekst);
}

.toelichting-sub {
  margin-top: 4px;
  font-size: 0.8rem;
}

.toelichting-sub code {
  font-size: 0.78rem !important;
  color: var(--kleur-tekst-zacht) !important;
}

/* Grafiek */
.grafiek-wrapper {
  max-height: 360px;
  position: relative;
}

/* Responsief */
@media (max-width: 600px) {
  header {
    padding: 16px;
  }

  .header-links {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .header-disclaimer {
    width: 100%;
    justify-content: flex-start;
  }

  .header-disclaimer-inner {
    max-width: 100%;
    text-align: left;
  }

  .disclaimer-icon {
    display: inline;
    margin-bottom: 0;
    margin-right: 4px;
  }

  .taal-switcher {
    justify-content: flex-start;
  }

  main {
    padding: 16px 12px 32px;
  }

  .card {
    padding: 16px;
  }

  .form-grid {
    grid-template-columns: 1fr;
  }

  .tarief-operator {
    display: none;
  }

  .tarief-drieluik .input-group {
    flex-basis: 100%;
  }
}