/* =========================================================
   KULLANIM VIDEOSU — ana sayfadaki bolum + kullanim.html
   Ayri dosya: mevcut style.css / site.css'e dokunulmadi.
   Renkler tema degiskenlerinden gelir (A ve B temasinda calisir).
   ========================================================= */

.video-kutu {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  background: #0b1220;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--color-border);
}
.video-kutu video {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
  background: #0b1220;
}

/* Bolum dugmeleri */
.video-bolumler {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  gap: 8px;
}
.video-bolumler.yatay {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}
.video-bolum {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 10px 14px;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font: inherit;
  font-size: 15px;
  color: var(--color-text);
  text-align: left;
  cursor: pointer;
  transition: border-color var(--transition), box-shadow var(--transition), background var(--transition);
}
.video-bolum:hover { border-color: var(--color-primary-light); }
.video-bolum:focus-visible { outline: none; box-shadow: var(--shadow-glow); border-color: var(--color-primary); }
.video-bolum .zaman {
  flex: none;
  min-width: 46px;
  padding: 3px 8px;
  border-radius: 6px;
  background: var(--color-bg-soft);
  color: var(--color-primary);
  font-weight: 700;
  font-size: 13px;
  font-variant-numeric: tabular-nums;
  text-align: center;
}
.video-bolum .ad { flex: 1; min-width: 0; }
.video-bolum .ad small { display: block; color: var(--color-muted); font-size: 13px; margin-top: 2px; }
.video-bolum.etkin {
  border-color: var(--color-primary);
  background: var(--color-bg-soft);
}
.video-bolum.etkin .zaman { background: var(--color-primary); color: #fff; }

.video-grup-baslik {
  margin: 22px 0 4px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--color-muted);
}

.video-alt-not {
  margin: 14px 0 0;
  text-align: center;
  color: var(--color-muted);
  font-size: 15px;
}
.video-alt-not a { color: var(--color-primary); font-weight: 600; }

/* Ana sayfadaki bolum */
.kullanim-video .video-sarici { max-width: 960px; margin: 0 auto; }

/* kullanim.html duzeni: video + bolum listesi yan yana */
.kullanim-duzen {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 28px;
  align-items: start;
}
.kullanim-duzen .video-bolumler { margin-top: 0; }
.kullanim-yan { position: sticky; top: calc(var(--header-h) + 16px); }
.kullanim-yan .video-grup-baslik:first-child { margin-top: 0; }

.kullanim-adimlar h2 {
  font-size: 22px;
  color: var(--color-dark);
  margin: 0 0 6px;
  scroll-margin-top: calc(var(--header-h) + 16px);
}
.kullanim-adimlar ol, .kullanim-adimlar ul { margin: 12px 0 0; padding-left: 22px; color: var(--color-body); line-height: 1.65; }
.kullanim-adimlar li + li { margin-top: 6px; }
.kullanim-adimlar .izle {
  display: inline-block;
  margin-top: 14px;
  padding: 0;
  background: none;
  border: 0;
  font: inherit;
  font-weight: 600;
  color: var(--color-primary);
  cursor: pointer;
}
.kullanim-adimlar .izle:hover { text-decoration: underline; }

.sss-kisa dt { font-weight: 700; color: var(--color-dark); margin-top: 16px; }
.sss-kisa dt:first-child { margin-top: 0; }
.sss-kisa dd { margin: 4px 0 0; color: var(--color-body); line-height: 1.6; }

@media (max-width: 960px) {
  .kullanim-duzen { grid-template-columns: 1fr; }
  .kullanim-yan { position: static; }
}
@media (max-width: 720px) {
  .video-bolumler.yatay { grid-template-columns: 1fr; }
  .video-kutu { border-radius: var(--radius-md); }
}