/* ==========================================================================
   Ders oynatici
   ========================================================================== */

.oynatici {
  display: grid;
  grid-template-columns: 1fr 330px;
  gap: 0;
  min-height: calc(100vh - 68px);
  background: var(--renk-beyaz);
}

.oynatici__ana { padding: 20px 28px 56px; min-width: 0; }

.oynatici__ust {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-bottom: 16px;
  margin-bottom: 18px;
  border-bottom: 1px solid var(--renk-kenar);
}
.oynatici__ust a { font-size: 14px; color: var(--renk-metin-2); }
.oynatici__ust a:hover { color: var(--renk-mor); }
.oynatici__mufredat-dugme { display: none; }

.oynatici__yan {
  background: var(--renk-bolum-zemin);
  border-left: 1px solid var(--renk-kenar);
  padding: 20px;
  max-height: calc(100vh - 68px);
  overflow-y: auto;
  position: sticky;
  top: 68px;
}
.oynatici__yan h2 { font-size: 16px; margin-bottom: 14px; }

.ders-video {
  position: relative;
  aspect-ratio: 16 / 9;
  background: #000;
  border-radius: var(--yuvarlak);
  overflow: hidden;
  margin-bottom: 22px;
}
.ders-video iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.ders-video video { width: 100%; height: 100%; }

.ders-baslik { font-size: 22px; margin-bottom: 8px; }
.ders-konum { font-size: 13px; color: var(--renk-metin-2); margin-bottom: 20px; }

.ders-eylemler {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  padding: 18px 0;
  margin-top: 24px;
  border-top: 1px solid var(--renk-kenar);
}
.ders-eylemler .buton--sonraki { margin-left: auto; }

.ders-icerik { line-height: 1.7; }
.ders-icerik img { border-radius: var(--yuvarlak); }

@media (max-width: 1024px) {
  .oynatici { grid-template-columns: 1fr; }
  .oynatici__mufredat-dugme { display: inline-flex; }
  .oynatici__yan {
    display: none;
    position: static;
    max-height: none;
    border-left: 0;
    border-top: 1px solid var(--renk-kenar);
  }
  .oynatici__yan--acik { display: block; }
  .oynatici__ana { padding: 16px; }
}

/* Yan panel: dersin tamamlanma dairesi ve izlenen yuzde (2026-09-26) */
.mufredat--yan .mufredat__oge a { flex: 1 1 auto; min-width: 0; }
.ders-daire { position: relative; flex: 0 0 20px; width: 20px; height: 20px; }
.ders-daire::before {
  content: ""; position: absolute; inset: 0; border-radius: 50%;
  background: conic-gradient(var(--renk-mor) calc(var(--yuzde, 0) * 1%), var(--renk-kenar) 0);
  -webkit-mask: radial-gradient(farthest-side, transparent calc(100% - 3px), #000 calc(100% - 3px));
          mask: radial-gradient(farthest-side, transparent calc(100% - 3px), #000 calc(100% - 3px));
}
.ders-daire--tamam::before { background: var(--renk-basari); -webkit-mask: none; mask: none; }
.ders-daire--tamam::after {
  content: "✓"; position: absolute; inset: 0; display: grid; place-items: center;
  color: #fff; font-size: 12px; font-weight: 700; line-height: 1;
}
.mufredat__yuzde {
  margin-left: auto; flex: 0 0 auto; font-size: 12px; font-weight: 600;
  color: var(--renk-mor); font-variant-numeric: tabular-nums;
}
.mufredat__yuzde:empty { display: none; }

/* Video bitince: "Sonraki ders 5 saniye içinde" */
.ders-gecis {
  position: absolute; inset: 0; z-index: 2;
  display: grid; place-content: center; justify-items: center; gap: 6px;
  padding: 16px; text-align: center;
  background: rgba(20, 16, 48, .84); color: #fff;
}
.ders-gecis__ust { margin: 0; font-size: 12px; letter-spacing: .06em; text-transform: uppercase; opacity: .8; }
.ders-gecis__baslik { margin: 0; max-width: 36ch; font-size: 20px; font-weight: 700; color: #fff; }
.ders-gecis__sayac { margin: 0 0 8px; font-size: 14px; opacity: .9; }
.ders-gecis__sayac span { font-size: 18px; font-weight: 700; }
.ders-gecis__dugmeler { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; }
.ders-gecis .buton--cizgi { background: transparent; color: #fff; border-color: rgba(255, 255, 255, .6); }
@media (max-width: 600px) {
  .ders-gecis { gap: 4px; }
  .ders-gecis__baslik { font-size: 15px; }
  .ders-gecis__sayac { margin-bottom: 4px; font-size: 13px; }
  .ders-gecis .buton { padding: 7px 12px; font-size: 13px; }
}

/* Kilitli ders (kayitsiz ziyaretci): Tutor `required-enroll` karsiligi */
.ders-kilit {
  padding: 36px 32px; border: 1px solid var(--renk-kenar); border-radius: var(--yuvarlak);
  background: var(--renk-bolum-zemin);
}
.ders-kilit .rozet { margin-bottom: 14px; }
.ders-kilit .ders-eylemler { border-top: 0; margin-top: 12px; padding-bottom: 0; }
@media (max-width: 600px) { .ders-kilit { padding: 24px 18px; } }