.studieai-sam { max-width: 780px; margin: 0 auto; font-size: 17px; --sai-paars: #6c5ce7; --sai-paars-d: #5b4bd1; --sai-licht: #f5f3ff; }

.studieai-sam-kaart {
  background: #fff; border: 1px solid #eceaf7; border-radius: 18px;
  padding: 28px; box-shadow: 0 10px 30px rgba(108, 92, 231, .08);
}

/* Upload-zone */
.studieai-sam-drop {
  display: flex; flex-direction: column; align-items: center; gap: 10px;
  border: 2px dashed #b9aef5; border-radius: 14px; padding: 34px 20px;
  background: var(--sai-licht); cursor: pointer; text-align: center;
  transition: background .15s, border-color .15s, transform .15s;
}
.studieai-sam-drop:hover, .studieai-sam-drop-actief { background: #ebe7ff; border-color: var(--sai-paars); transform: translateY(-1px); }
.studieai-sam-drop-icoon { color: var(--sai-paars); }
.studieai-sam-drop-tekst { display: grid; gap: 2px; }
.studieai-sam-drop-tekst span { color: #777; font-size: 14px; }
.studieai-sam-bestandsnaam { color: var(--sai-paars-d); font-weight: 600; font-size: 15px; }

.studieai-sam-of { display: flex; align-items: center; gap: 14px; margin: 18px 0; color: #999; font-size: 14px; }
.studieai-sam-of::before, .studieai-sam-of::after { content: ""; flex: 1; height: 1px; background: #e8e5f5; }

.studieai-sam textarea {
  width: 100%; border: 1px solid #ddd8f0; border-radius: 12px; padding: 16px;
  font: inherit; resize: vertical; transition: border-color .15s, box-shadow .15s;
}
.studieai-sam textarea:focus { outline: none; border-color: var(--sai-paars); box-shadow: 0 0 0 3px rgba(108,92,231,.15); }
.studieai-sam-teller { text-align: right; font-size: 13px; color: #999; margin-top: 4px; }

/* Knoppen */
.studieai-sam-knop {
  display: flex; align-items: center; justify-content: center; gap: 10px;
  width: 100%; margin-top: 16px; padding: 16px 24px;
  background: linear-gradient(135deg, var(--sai-paars), #8e7cf3); color: #fff;
  border: 0; border-radius: 999px; font-size: 17px; font-weight: 700; cursor: pointer;
  transition: transform .12s, box-shadow .12s; box-shadow: 0 6px 18px rgba(108,92,231,.35);
}
.studieai-sam-knop:hover:not(:disabled) { transform: translateY(-1px); box-shadow: 0 8px 22px rgba(108,92,231,.45); }
.studieai-sam-knop:disabled { opacity: .75; cursor: wait; }
.studieai-sam-knop-licht { background: #efeaff; color: var(--sai-paars-d); box-shadow: none; }
.studieai-sam-knop-licht:hover:not(:disabled) { background: #e2daff; box-shadow: none; }

.studieai-sam-spinner {
  width: 18px; height: 18px; border: 3px solid rgba(255,255,255,.4); border-top-color: #fff;
  border-radius: 50%; animation: studieai-sam-draai .7s linear infinite;
}
@keyframes studieai-sam-draai { to { transform: rotate(360deg); } }

.studieai-sam-status { margin-top: 14px; text-align: center; color: #555; min-height: 1.4em; }
.studieai-sam-fout { color: #c0392b; font-weight: 600; }

/* Tabs */
.studieai-sam-tabs { display: flex; gap: 8px; margin-bottom: 14px; }
.studieai-sam-tab {
  flex: 1; padding: 13px 18px; border-radius: 999px; border: 1px solid #e3def7;
  background: #fff; font: inherit; font-weight: 600; cursor: pointer; color: #666;
  transition: all .15s; display: flex; align-items: center; justify-content: center; gap: 8px;
}
.studieai-sam-tab-actief { background: var(--sai-paars); border-color: var(--sai-paars); color: #fff; box-shadow: 0 4px 14px rgba(108,92,231,.3); }
.studieai-sam-score { background: rgba(255,255,255,.25); border-radius: 999px; padding: 2px 10px; font-size: 13px; }
.studieai-sam-tab:not(.studieai-sam-tab-actief) .studieai-sam-score { background: var(--sai-licht); color: var(--sai-paars-d); }

/* Samenvatting */
#studieai-sam-samenvatting h4 {
  color: var(--sai-paars-d); margin: 22px 0 8px; padding-bottom: 6px;
  border-bottom: 2px solid var(--sai-licht); font-size: 19px;
}
#studieai-sam-samenvatting h4:first-child { margin-top: 0; }
#studieai-sam-samenvatting p, #studieai-sam-samenvatting li { line-height: 1.65; }
.studieai-sam-kopieer { margin-top: 22px; }

/* Voortgang */
.studieai-sam-voortgang { height: 8px; background: var(--sai-licht); border-radius: 999px; overflow: hidden; margin-bottom: 22px; }
.studieai-sam-voortgang-balk { height: 100%; width: 0; background: linear-gradient(90deg, var(--sai-paars), #8e7cf3); border-radius: 999px; transition: width .3s; }

/* Vragen */
#studieai-sam-vragen { margin: 0; padding-left: 22px; }
.studieai-sam-vraag { margin-bottom: 26px; }
.studieai-sam-vraag > p { font-weight: 700; margin-bottom: 10px; line-height: 1.5; }
.studieai-sam-vraag ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.studieai-sam-vraag button {
  display: flex; align-items: center; gap: 12px; width: 100%; text-align: left;
  padding: 12px 16px; border-radius: 12px; border: 1px solid #e3def7;
  background: #fbfaff; cursor: pointer; font: inherit; transition: all .12s; line-height: 1.45;
}
.studieai-sam-vraag button:hover:not(:disabled) { border-color: var(--sai-paars); background: var(--sai-licht); }
.studieai-sam-letter {
  flex: 0 0 28px; height: 28px; display: grid; place-items: center;
  background: var(--sai-licht); color: var(--sai-paars-d); border-radius: 50%; font-weight: 700; font-size: 14px;
}
.studieai-sam-goed { background: #e6f9ee !important; border-color: #2ecc71 !important; }
.studieai-sam-goed .studieai-sam-letter { background: #2ecc71; color: #fff; }
.studieai-sam-fout-optie { background: #fdeae7 !important; border-color: #e74c3c !important; }
.studieai-sam-fout-optie .studieai-sam-letter { background: #e74c3c; color: #fff; }
.studieai-sam-uitleg {
  margin-top: 10px; padding: 12px 16px; background: var(--sai-licht);
  border-left: 3px solid var(--sai-paars); border-radius: 0 10px 10px 0; font-size: 15px; line-height: 1.55;
}
.studieai-sam-eindscore {
  margin-top: 26px; padding: 20px; text-align: center; background: var(--sai-licht);
  border-radius: 14px; font-size: 17px; line-height: 1.6;
}

@media (max-width: 600px) {
  .studieai-sam-kaart { padding: 18px; }
  .studieai-sam-tabs { flex-direction: column; }
}
.studieai-sam-teller-vol { color: #c0392b; font-weight: 600; }

/* v0.4: laadblokken, extra vragen, upsell */
.studieai-sam-laadblok {
  display: flex; align-items: center; justify-content: center; gap: 12px;
  padding: 30px 16px; color: #666; font-size: 16px;
}
.studieai-sam-spinner-paars { border-color: rgba(108,92,231,.25); border-top-color: #6c5ce7; }
#studieai-sam-extra-houder { margin-top: 24px; }
#studieai-sam-extra { margin-top: 0; }
.studieai-sam-upsell {
  text-align: center; padding: 24px; background: linear-gradient(135deg, #f5f3ff, #ece7ff);
  border: 1px solid #ddd4ff; border-radius: 14px;
}
.studieai-sam-upsell p { margin: 8px 0 16px; color: #555; }
.studieai-sam-upsell-knop { display: inline-flex; width: auto; margin-top: 0; padding: 13px 28px; text-decoration: none; }

/* v0.4.1: mobiele optimalisatie */
@media (max-width: 600px) {
  .studieai-sam { font-size: 16px; }
  .studieai-sam-kaart { padding: 16px; border-radius: 14px; }
  .studieai-sam-drop { padding: 22px 14px; }
  .studieai-sam-drop-icoon svg { width: 34px; height: 34px; }
  .studieai-sam textarea { padding: 12px; }
  .studieai-sam-knop { padding: 14px 18px; font-size: 16px; }
  .studieai-sam-tabs { flex-direction: row; gap: 6px; }
  .studieai-sam-tab { padding: 11px 8px; font-size: 14px; }
  #studieai-sam-samenvatting h4 { font-size: 17px; }
  .studieai-sam-vraag button { padding: 11px 12px; font-size: 15px; }
  .studieai-sam-letter { flex-basis: 24px; height: 24px; font-size: 12px; }
  .studieai-sam-uitleg { font-size: 14px; }
  .studieai-sam-eindscore { padding: 14px; font-size: 15px; }
  #studieai-sam-vragen { padding-left: 18px; }
}

/* v0.5: kritieke fix — [hidden] won het niet van display:flex, waardoor laadblokken altijd zichtbaar bleven */
.studieai-sam [hidden] { display: none !important; }

/* Globale voortgangsbalk met tijdschatting */
.studieai-sam-globaal { margin: 16px 0 4px; }
.studieai-sam-globaal-spoor { height: 10px; background: #efecfb; border-radius: 999px; overflow: hidden; }
.studieai-sam-globaal-balk {
  height: 100%; width: 0; border-radius: 999px;
  background: linear-gradient(90deg, #6c5ce7, #8e7cf3);
  transition: width .5s linear;
}
.studieai-sam-globaal-tekst { display: block; text-align: center; margin-top: 8px; color: #666; font-size: 14px; }

/* v0.6: prijzenpagina */
.studieai-prijzen { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 18px; max-width: 1100px; margin: 0 auto; }
.studieai-prijs-kaart {
  position: relative; background: #fff; border: 1px solid #eceaf7; border-radius: 18px;
  padding: 26px 22px; box-shadow: 0 10px 30px rgba(108,92,231,.08); display: flex; flex-direction: column;
}
.studieai-prijs-populair { border: 2px solid #6c5ce7; transform: scale(1.03); }
.studieai-prijs-badge {
  position: absolute; top: -13px; left: 50%; transform: translateX(-50%);
  background: linear-gradient(135deg,#6c5ce7,#8e7cf3); color: #fff; font-size: 13px; font-weight: 700;
  padding: 4px 14px; border-radius: 999px; white-space: nowrap;
}
.studieai-prijs-kaart h3 { margin: 4px 0 2px; font-size: 20px; }
.studieai-prijs-bedrag { font-size: 34px; font-weight: 800; color: #5b4bd1; margin-bottom: 14px; }
.studieai-prijs-bedrag span { font-size: 14px; font-weight: 500; color: #888; margin-left: 6px; }
.studieai-prijs-kaart ul { list-style: none; margin: 0 0 18px; padding: 0; display: grid; gap: 9px; flex: 1; }
.studieai-prijs-kaart li { padding-left: 26px; position: relative; line-height: 1.45; font-size: 15px; }
.studieai-prijs-kaart li::before { content: "\2713"; position: absolute; left: 0; color: #2ecc71; font-weight: 700; }
.studieai-prijs-knop { margin-top: auto; text-decoration: none; text-align: center; }
.studieai-prijs-knop-uit { background: #eceaf7; color: #999; box-shadow: none; cursor: default; }
@media (max-width: 600px) { .studieai-prijs-populair { transform: none; } }
a.studieai-prijs-knop, a.studieai-prijs-knop:visited, a.studieai-prijs-knop:hover {
  background: linear-gradient(135deg, #6c5ce7, #8e7cf3) !important;
  color: #fff !important; text-decoration: none !important;
}
.studieai-sam-fout-blok { background:#fdeae7; border:1px solid #e74c3c; border-radius:12px; padding:14px 18px; margin-bottom:14px; }