/* Eğitim Platformu — ortak stil. Renk dili laboratuvarlarla aynıdır (lacivert #123c6b, mavi #1f5fa8). */
:root {
  --lacivert: #123c6b; --mavi: #1f5fa8; --mavi-koyu: #174d8a; --mavi-acik: #e8eff8; --mavi-zemin: #f3f7fc;
  --zemin: #f4f6f9; --kart: #ffffff; --kart-2: #f8fafc; --yazi: #1d1f23; --soluk: #5b6573; --cizgi: #d9e2ee; --cizgi-koyu: #b9c6d6;
  --yesil: #1d6b3a; --yesil-acik: #eaf6ee; --yesil-cizgi: #b7dcc3;
  --kirmizi: #a12a2a; --kirmizi-acik: #fdf0f0; --kirmizi-cizgi: #efc2c2;
  --turuncu: #9a5b00; --turuncu-acik: #fff4e0; --turuncu-cizgi: #efcf98;
  --mor: #5b3fa8; --mor-acik: #f1ecfb; --mor-cizgi: #d5c7f0;
  --kod-zemin: #f4f6f9; --golge: 0 1px 2px rgba(16, 38, 66, .06), 0 4px 14px rgba(16, 38, 66, .06);
  --golge-buyuk: 0 10px 40px rgba(16, 38, 66, .14);
  --bant: linear-gradient(135deg, #0f2f57 0%, #1f5fa8 100%);
  --yaricap: 12px; --yazi-tipi: "Segoe UI", "Segoe UI Variable", system-ui, -apple-system, Roboto, "Helvetica Neue", Arial, sans-serif;
  --okuma-tipi: "Segoe UI", "Segoe UI Variable", system-ui, -apple-system, Roboto, Arial, sans-serif;
  color-scheme: light;
}
:root[data-theme="dark"] {
  --lacivert: #a9cbf2; --mavi: #6aa6e8; --mavi-koyu: #8bbbf0; --mavi-acik: #1b2a3d; --mavi-zemin: #152131;
  --zemin: #0f141b; --kart: #171e27; --kart-2: #1b2430; --yazi: #e4e8ee; --soluk: #9aa6b5; --cizgi: #2a3644; --cizgi-koyu: #3a4858;
  --yesil: #6fd08f; --yesil-acik: #142a1c; --yesil-cizgi: #285a3a;
  --kirmizi: #f08c8c; --kirmizi-acik: #2e1a1a; --kirmizi-cizgi: #5e2e2e;
  --turuncu: #f0b45a; --turuncu-acik: #2c2414; --turuncu-cizgi: #5c4520;
  --mor: #b9a3f0; --mor-acik: #241d36; --mor-cizgi: #46386a;
  --kod-zemin: #121921; --golge: none; --golge-buyuk: 0 10px 40px rgba(0, 0, 0, .5);
  --bant: linear-gradient(135deg, #0b1d33 0%, #17406e 100%);
  color-scheme: dark;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --lacivert: #a9cbf2; --mavi: #6aa6e8; --mavi-koyu: #8bbbf0; --mavi-acik: #1b2a3d; --mavi-zemin: #152131;
    --zemin: #0f141b; --kart: #171e27; --kart-2: #1b2430; --yazi: #e4e8ee; --soluk: #9aa6b5; --cizgi: #2a3644; --cizgi-koyu: #3a4858;
    --yesil: #6fd08f; --yesil-acik: #142a1c; --yesil-cizgi: #285a3a;
    --kirmizi: #f08c8c; --kirmizi-acik: #2e1a1a; --kirmizi-cizgi: #5e2e2e;
    --turuncu: #f0b45a; --turuncu-acik: #2c2414; --turuncu-cizgi: #5c4520;
    --mor: #b9a3f0; --mor-acik: #241d36; --mor-cizgi: #46386a;
    --kod-zemin: #121921; --golge: none; --golge-buyuk: 0 10px 40px rgba(0, 0, 0, .5);
    --bant: linear-gradient(135deg, #0b1d33 0%, #17406e 100%);
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: 76px; }
body { margin: 0; background: var(--zemin); color: var(--yazi); font: 15.5px/1.6 var(--yazi-tipi); min-height: 100vh; display: flex; flex-direction: column; }
a { color: var(--mavi); text-underline-offset: 2px; }
a:hover { color: var(--mavi-koyu); }
img { max-width: 100%; height: auto; }
:focus-visible { outline: 3px solid color-mix(in srgb, var(--mavi) 55%, transparent); outline-offset: 2px; border-radius: 4px; }
.gizli-metin { position: absolute !important; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
.atla { position: absolute; left: -999px; top: 8px; background: var(--kart); padding: 8px 14px; z-index: 100; border-radius: 6px; }
.atla:focus { left: 8px; }
h1, h2, h3, h4 { line-height: 1.25; color: var(--lacivert); }
h1 { font-size: 1.75rem; margin: 0 0 .4rem; }
h2 { font-size: 1.3rem; margin: 1.6rem 0 .7rem; }
h3 { font-size: 1.08rem; margin: 1.2rem 0 .5rem; }
p { margin: .5rem 0; }
.soluk { color: var(--soluk); }
.kucuk { font-size: .875rem; }
.sag { text-align: right; }
.ortala { text-align: center; }
.nowrap { white-space: nowrap; }

/* ---------- üst çubuk ---------- */
.ust { background: var(--bant); color: #fff; position: sticky; top: 0; z-index: 40; box-shadow: 0 2px 10px rgba(8, 24, 46, .25); }
.ust-ic { max-width: 1240px; margin: 0 auto; padding: 0 16px; height: 60px; display: flex; align-items: center; gap: 18px; }
.marka { display: flex; align-items: center; gap: 10px; color: #fff; text-decoration: none; font-weight: 700; letter-spacing: .2px; white-space: nowrap; }
.marka:hover { color: #fff; }
.marka-logo { width: 32px; height: 32px; border-radius: 9px; background: rgba(255, 255, 255, .16); display: grid; place-items: center; border: 1px solid rgba(255, 255, 255, .3); }
.marka-logo svg { width: 19px; height: 19px; }
.marka small { display: block; font-weight: 400; font-size: .72rem; opacity: .8; letter-spacing: .6px; text-transform: uppercase; margin-top: -2px; }
.menu { display: flex; align-items: center; gap: 4px; margin-left: 8px; flex: 1; }
.menu a { color: rgba(255, 255, 255, .88); text-decoration: none; padding: 7px 12px; border-radius: 8px; font-size: .95rem; white-space: nowrap; }
.menu a:hover { background: rgba(255, 255, 255, .12); color: #fff; }
.menu a[aria-current="page"] { background: rgba(255, 255, 255, .18); color: #fff; font-weight: 600; }
.ust-sag { display: flex; align-items: center; gap: 8px; margin-left: auto; }
.ikon-dugme { background: rgba(255, 255, 255, .12); border: 1px solid rgba(255, 255, 255, .25); color: #fff; width: 38px; height: 38px; border-radius: 10px; display: inline-grid; place-items: center; cursor: pointer; padding: 0; }
.ikon-dugme:hover { background: rgba(255, 255, 255, .22); }
.ikon-dugme svg { width: 19px; height: 19px; }
.kullanici-menu { position: relative; }
.kullanici-menu > summary { list-style: none; display: flex; align-items: center; gap: 8px; cursor: pointer; padding: 4px 10px 4px 4px; border-radius: 22px; background: rgba(255, 255, 255, .1); border: 1px solid rgba(255, 255, 255, .22); }
.kullanici-menu > summary::-webkit-details-marker { display: none; }
.avatar { width: 30px; height: 30px; border-radius: 50%; background: #fff; color: var(--bant-yazi, #123c6b); display: grid; place-items: center; font-weight: 700; font-size: .85rem; }
.kullanici-menu .ad { max-width: 160px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: .9rem; }
.acilir { position: absolute; right: 0; top: calc(100% + 8px); background: var(--kart); color: var(--yazi); border: 1px solid var(--cizgi); border-radius: 12px; box-shadow: var(--golge-buyuk); min-width: 220px; padding: 6px; z-index: 50; }
.acilir a, .acilir button { display: block; width: 100%; text-align: left; padding: 9px 12px; border-radius: 8px; color: var(--yazi); text-decoration: none; background: none; border: 0; font: inherit; cursor: pointer; }
.acilir a:hover, .acilir button:hover { background: var(--mavi-acik); }
.acilir .bolucu { border-top: 1px solid var(--cizgi); margin: 6px 0; }
.acilir .kim { padding: 8px 12px 6px; font-size: .85rem; color: var(--soluk); }
.menu-ac { display: none; }

@media (max-width: 860px) {
  .menu-ac { display: inline-grid; }
  .menu { display: none; position: absolute; top: 60px; left: 0; right: 0; flex-direction: column; align-items: stretch; background: #133a66; padding: 8px 12px 14px; margin: 0; box-shadow: 0 10px 20px rgba(0, 0, 0, .25); }
  .menu.acik { display: flex; }
  .menu a { padding: 11px 12px; }
  .kullanici-menu .ad { display: none; }
  .kullanici-menu > summary { padding: 3px; }
  .marka small { display: none; }
}

/* ---------- sayfa ---------- */
main { flex: 1; }
.kap { max-width: 1240px; margin: 0 auto; padding: 24px 16px 56px; }
.kap-dar { max-width: 880px; }
.alt-bilgi { color: var(--soluk); font-size: .85rem; text-align: center; padding: 18px 16px 26px; }
.iz { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; font-size: .88rem; color: var(--soluk); margin-bottom: 10px; }
.iz a { color: var(--soluk); text-decoration: none; }
.iz a:hover { color: var(--mavi); text-decoration: underline; }
.iz span[aria-hidden] { opacity: .5; }
.sayfa-bas { display: flex; flex-wrap: wrap; align-items: flex-end; justify-content: space-between; gap: 12px 24px; margin-bottom: 20px; }
.sayfa-bas p { margin: 0; color: var(--soluk); }
.bant { background: var(--bant); color: #fff; border-radius: 16px; padding: 26px 28px; margin-bottom: 22px; position: relative; overflow: hidden; }
.bant::after { content: ""; position: absolute; right: -60px; top: -60px; width: 260px; height: 260px; border-radius: 50%; background: radial-gradient(circle, rgba(255, 255, 255, .14), transparent 70%); pointer-events: none; }
.bant h1 { color: #fff; margin-bottom: 6px; }
.bant p { color: rgba(255, 255, 255, .88); margin: 0; max-width: 70ch; }
.bant .iz, .bant .iz a { color: rgba(255, 255, 255, .8); }
.bant .rozet { background: rgba(255, 255, 255, .15); color: #fff; border-color: rgba(255, 255, 255, .3); }
.bant-alt { display: flex; flex-wrap: wrap; gap: 10px 22px; align-items: center; margin-top: 14px; }

/* ---------- kart ve ızgara ---------- */
.kart { background: var(--kart); border: 1px solid var(--cizgi); border-radius: var(--yaricap); padding: 20px 22px; box-shadow: var(--golge); }
.kart + .kart { margin-top: 18px; }
.kart > h2:first-child, .kart > h3:first-child, .kart-bas h2, .kart-bas h3 { margin-top: 0; }
.kart-bas { display: flex; justify-content: space-between; align-items: center; gap: 10px; margin-bottom: 12px; flex-wrap: wrap; }
.kart-bas h2, .kart-bas h3 { margin-bottom: 0; font-size: 1.1rem; }
.izgara { display: grid; gap: 18px; }
.izgara-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.izgara-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.izgara-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.panel-izgara { display: grid; grid-template-columns: minmax(0, 1.65fr) minmax(0, 1fr); gap: 18px; align-items: start; }
.yigin { display: grid; gap: 18px; }
@media (max-width: 1000px) { .panel-izgara { grid-template-columns: 1fr; } .izgara-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); } .izgara-3 { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 620px) { .izgara-2, .izgara-3 { grid-template-columns: 1fr; } .kart { padding: 16px; } .bant { padding: 20px 18px; border-radius: 12px; } h1 { font-size: 1.45rem; } }

/* istatistik kutuları */
.istatistik { background: var(--kart); border: 1px solid var(--cizgi); border-radius: var(--yaricap); padding: 16px 18px; box-shadow: var(--golge); display: flex; gap: 14px; align-items: center; min-width: 0; }
.istatistik .simge { width: 44px; height: 44px; flex: none; border-radius: 12px; display: grid; place-items: center; background: var(--mavi-acik); color: var(--mavi); }
.istatistik .simge svg { width: 22px; height: 22px; }
.istatistik .deger { font-size: 1.55rem; font-weight: 700; color: var(--lacivert); line-height: 1.1; }
.istatistik .etiket { color: var(--soluk); font-size: .85rem; }
.istatistik.yesil .simge { background: var(--yesil-acik); color: var(--yesil); }
.istatistik.turuncu .simge { background: var(--turuncu-acik); color: var(--turuncu); }
.istatistik.mor .simge { background: var(--mor-acik); color: var(--mor); }

/* ilerleme */
.cubuk { height: 8px; background: var(--mavi-acik); border-radius: 6px; overflow: hidden; }
.cubuk > span { display: block; height: 100%; background: linear-gradient(90deg, var(--mavi), #3d86d6); border-radius: 6px; }
.cubuk.yesil > span { background: linear-gradient(90deg, #1d6b3a, #3a9a5e); }
.bant .cubuk { background: rgba(255, 255, 255, .2); }
.bant .cubuk > span { background: #7fd39b; }
.halka { --y: 0; width: 120px; height: 120px; border-radius: 50%; background: conic-gradient(var(--mavi) calc(var(--y) * 1%), var(--mavi-acik) 0); display: grid; place-items: center; flex: none; }
.halka > div { width: 92px; height: 92px; border-radius: 50%; background: var(--kart); display: grid; place-items: center; text-align: center; }
.halka b { font-size: 1.6rem; color: var(--lacivert); line-height: 1; display: block; }
.halka small { color: var(--soluk); font-size: .75rem; }

/* rozetler */
.rozet { display: inline-flex; align-items: center; gap: 5px; border: 1px solid var(--cizgi); background: var(--kart-2); color: var(--soluk); border-radius: 999px; padding: 1px 10px; font-size: .78rem; font-weight: 600; white-space: nowrap; line-height: 1.7; }
.rozet.bitti { background: var(--yesil-acik); color: var(--yesil); border-color: var(--yesil-cizgi); }
.rozet.okuyor { background: var(--mavi-acik); color: var(--mavi); border-color: color-mix(in srgb, var(--mavi) 30%, transparent); }
.rozet.uyari { background: var(--turuncu-acik); color: var(--turuncu); border-color: var(--turuncu-cizgi); }
.rozet.hata { background: var(--kirmizi-acik); color: var(--kirmizi); border-color: var(--kirmizi-cizgi); }
.rozet.mor { background: var(--mor-acik); color: var(--mor); border-color: var(--mor-cizgi); }
.puan { font-weight: 700; font-variant-numeric: tabular-nums; }
.puan.iyi { color: var(--yesil); }
.puan.orta { color: var(--turuncu); }
.puan.dusuk { color: var(--kirmizi); }

/* düğmeler */
.dugme, button.dugme { display: inline-flex; align-items: center; justify-content: center; gap: 8px; font: inherit; font-weight: 600; font-size: .95rem; cursor: pointer; text-decoration: none; background: var(--mavi); color: #fff; border: 1px solid var(--mavi); border-radius: 10px; padding: 9px 16px; line-height: 1.3; transition: filter .15s, background .15s; }
.dugme:hover { filter: brightness(1.08); color: #fff; }
.dugme:disabled, .dugme[aria-disabled="true"] { opacity: .55; cursor: not-allowed; filter: none; }
.dugme.ikincil { background: transparent; color: var(--mavi); }
.dugme.ikincil:hover { background: var(--mavi-acik); color: var(--mavi); }
.dugme.yesil { background: var(--yesil); border-color: var(--yesil); }
.dugme.tehlike { background: var(--kirmizi); border-color: var(--kirmizi); }
.dugme.tehlike.ikincil { background: transparent; color: var(--kirmizi); }
.dugme.tehlike.ikincil:hover { background: var(--kirmizi-acik); }
.dugme.kucuk { padding: 5px 11px; font-size: .85rem; border-radius: 8px; }
.dugme.buyuk { padding: 12px 20px; font-size: 1rem; }
.dugme.tam { width: 100%; }
.dugme svg { width: 17px; height: 17px; }
:root[data-theme="dark"] .dugme:not(.ikincil) { color: #0f141b; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .dugme:not(.ikincil) { color: #0f141b; } }
.bant .dugme { background: #fff; color: #123c6b; border-color: #fff; }
.bant .dugme.ikincil { background: transparent; color: #fff; border-color: rgba(255, 255, 255, .6); }
.dugmeler { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }

/* formlar */
.alan { margin-bottom: 14px; }
.alan label, .etiket { display: block; font-weight: 600; font-size: .9rem; margin-bottom: 5px; }
.girdi, input[type=text].girdi, input[type=password].girdi, input[type=email].girdi, select.girdi, textarea.girdi {
  width: 100%; font: inherit; color: var(--yazi); background: var(--kart); border: 1px solid var(--cizgi-koyu); border-radius: 10px; padding: 9px 12px; transition: border-color .15s, box-shadow .15s; }
.girdi:focus { outline: none; border-color: var(--mavi); box-shadow: 0 0 0 3px color-mix(in srgb, var(--mavi) 22%, transparent); }
textarea.girdi { min-height: 96px; resize: vertical; }
.ipucu-metni { color: var(--soluk); font-size: .82rem; margin-top: 4px; }
.hata-metni, .field-validation-error { color: var(--kirmizi); font-size: .85rem; margin-top: 4px; display: block; }
.validation-summary-errors ul { margin: 0; padding-left: 18px; }
.secim-satiri { display: flex; align-items: center; gap: 8px; font-weight: 400; cursor: pointer; }
.secim-satiri input { width: 17px; height: 17px; accent-color: var(--mavi); }
.onay-listesi { display: grid; gap: 6px; }

/* bildirimler */
.bildirim { border-radius: 10px; padding: 12px 16px; margin-bottom: 16px; border: 1px solid; display: flex; gap: 10px; align-items: flex-start; }
.bildirim.bilgi { background: var(--mavi-acik); border-color: color-mix(in srgb, var(--mavi) 30%, transparent); color: var(--yazi); }
.bildirim.basari { background: var(--yesil-acik); border-color: var(--yesil-cizgi); }
.bildirim.uyari { background: var(--turuncu-acik); border-color: var(--turuncu-cizgi); }
.bildirim.hata { background: var(--kirmizi-acik); border-color: var(--kirmizi-cizgi); }
.bildirim p { margin: 0; }
.bos-durum { text-align: center; padding: 30px 16px; color: var(--soluk); }
.bos-durum svg { width: 40px; height: 40px; opacity: .5; margin-bottom: 6px; }

/* tablolar (uygulama) */
.tablo-kap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
table.tablo { width: 100%; border-collapse: separate; border-spacing: 0; font-size: .93rem; }
.tablo th { text-align: left; font-size: .78rem; text-transform: uppercase; letter-spacing: .5px; color: var(--soluk); font-weight: 700; padding: 10px 12px; border-bottom: 1px solid var(--cizgi); background: var(--kart-2); white-space: nowrap; }
.tablo td { padding: 11px 12px; border-bottom: 1px solid var(--cizgi); vertical-align: middle; }
.tablo tr:last-child td { border-bottom: 0; }
.tablo tbody tr:hover td { background: var(--mavi-zemin); }
.tablo .sayi { text-align: right; font-variant-numeric: tabular-nums; }

/* listeler */
.liste { list-style: none; margin: 0; padding: 0; }
.liste > li { border-bottom: 1px solid var(--cizgi); }
.liste > li:last-child { border-bottom: 0; }
.satir-baglanti { display: flex; align-items: center; gap: 14px; padding: 12px 4px; color: inherit; text-decoration: none; border-radius: 8px; }
a.satir-baglanti:hover { background: var(--mavi-zemin); color: inherit; }
.satir-baglanti .kod { font-variant-numeric: tabular-nums; font-weight: 700; color: var(--mavi); min-width: 3.4em; }
.satir-baglanti .govde { flex: 1; min-width: 0; }
.satir-baglanti .baslik { font-weight: 600; color: var(--yazi); }
.satir-baglanti .alt { font-size: .83rem; color: var(--soluk); display: flex; flex-wrap: wrap; gap: 4px 12px; margin-top: 2px; }
.satir-baglanti .son { display: flex; align-items: center; gap: 10px; flex: none; }
.durum-nokta { width: 26px; height: 26px; border-radius: 50%; flex: none; display: grid; place-items: center; border: 2px solid var(--cizgi-koyu); color: transparent; }
.durum-nokta svg { width: 14px; height: 14px; }
.durum-nokta.okuyor { border-color: var(--mavi); background: conic-gradient(var(--mavi) 50%, transparent 0); }
.durum-nokta.bitti { border-color: var(--yesil); background: var(--yesil); color: #fff; }
@media (max-width: 620px) { .satir-baglanti .son .rozet:not(.zorunlu) { display: none; } }

/* ders kartları */
.ders-kart { display: flex; flex-direction: column; gap: 10px; text-decoration: none; color: inherit; background: var(--kart); border: 1px solid var(--cizgi); border-radius: var(--yaricap); padding: 16px 18px; box-shadow: var(--golge); transition: transform .15s, border-color .15s, box-shadow .15s; }
.ders-kart:hover { transform: translateY(-2px); border-color: color-mix(in srgb, var(--mavi) 45%, var(--cizgi)); color: inherit; }
.ders-kart .ders-no { font-size: .75rem; font-weight: 700; letter-spacing: .8px; color: var(--mavi); text-transform: uppercase; }
.ders-kart h3 { margin: 0; font-size: 1.02rem; color: var(--yazi); }
.ders-kart .alt { display: flex; justify-content: space-between; font-size: .83rem; color: var(--soluk); }
.ders-kart.bitti { border-color: var(--yesil-cizgi); }

/* devam kartı */
.devam { display: flex; gap: 18px; align-items: center; }
.devam .govde { flex: 1; min-width: 0; }
.devam h3 { margin: 2px 0 6px; font-size: 1.15rem; }
.devam .ust-etiket { font-size: .75rem; font-weight: 700; text-transform: uppercase; letter-spacing: .8px; color: var(--mavi); }
@media (max-width: 620px) { .devam { flex-direction: column; align-items: stretch; } }

/* ---------- giriş ---------- */
.giris-sayfa { min-height: 100vh; display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); background: var(--zemin); }
.giris-sol { background: var(--bant); color: #fff; padding: 56px 56px 40px; display: flex; flex-direction: column; justify-content: space-between; position: relative; overflow: hidden; }
.giris-sol::before { content: ""; position: absolute; width: 520px; height: 520px; border-radius: 50%; right: -180px; bottom: -200px; background: radial-gradient(circle, rgba(255, 255, 255, .14), transparent 68%); }
.giris-sol::after { content: ""; position: absolute; width: 300px; height: 300px; border-radius: 50%; left: -120px; top: 30%; border: 1px solid rgba(255, 255, 255, .12); }
.giris-sol h1 { color: #fff; font-size: 2.3rem; max-width: 15ch; margin: 18px 0 14px; }
.giris-sol p { color: rgba(255, 255, 255, .86); max-width: 46ch; font-size: 1.05rem; }
.giris-ozellik { list-style: none; padding: 0; margin: 28px 0 0; display: grid; gap: 12px; max-width: 460px; position: relative; z-index: 1; }
.giris-ozellik li { display: flex; gap: 12px; align-items: center; background: rgba(255, 255, 255, .08); border: 1px solid rgba(255, 255, 255, .14); padding: 10px 14px; border-radius: 12px; }
.giris-ozellik svg { width: 20px; height: 20px; flex: none; opacity: .9; }
.giris-sag { display: grid; place-items: center; padding: 32px 20px; }
.giris-kart { width: 100%; max-width: 400px; }
.giris-kart h2 { font-size: 1.6rem; margin: 0 0 4px; }
.giris-kart .kart { padding: 28px; }
@media (max-width: 900px) {
  .giris-sayfa { grid-template-columns: 1fr; }
  .giris-sol { padding: 28px 22px; }
  .giris-sol h1 { font-size: 1.6rem; margin: 12px 0 6px; }
  .giris-ozellik, .giris-sol .giris-dip { display: none; }
}

/* ---------- bölüm okuma ---------- */
.okuma { display: grid; grid-template-columns: 270px minmax(0, 1fr); gap: 32px; align-items: start; }
.icindekiler { position: sticky; top: 80px; max-height: calc(100vh - 100px); overflow: auto; background: var(--kart); border: 1px solid var(--cizgi); border-radius: var(--yaricap); padding: 14px 10px 14px 14px; font-size: .88rem; }
.icindekiler > summary { font-weight: 700; color: var(--lacivert); cursor: pointer; list-style: none; padding: 2px 4px 8px; }
.icindekiler > summary::-webkit-details-marker { display: none; }
.icindekiler ol { list-style: none; margin: 0; padding: 0; }
.icindekiler li a { display: block; padding: 5px 8px; border-radius: 6px; color: var(--soluk); text-decoration: none; border-left: 2px solid transparent; line-height: 1.35; }
.icindekiler li.s3 a { padding-left: 20px; font-size: .84rem; }
.icindekiler li a:hover { background: var(--mavi-zemin); color: var(--yazi); }
.icindekiler li a.aktif { color: var(--mavi); border-left-color: var(--mavi); background: var(--mavi-acik); font-weight: 600; }
.okuma-govde { min-width: 0; }
.okuma-bas { margin-bottom: 18px; }
.okuma-bas h1 { font-size: 1.85rem; margin: 4px 0 10px; }
.okuma-bas .rozetler { display: flex; flex-wrap: wrap; gap: 6px; }
.okuma-alt { display: flex; flex-wrap: wrap; gap: 12px; justify-content: space-between; align-items: center; margin-top: 26px; padding-top: 18px; border-top: 1px solid var(--cizgi); }
.gezinme { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 18px; }
.gezinme a { display: block; border: 1px solid var(--cizgi); background: var(--kart); border-radius: 12px; padding: 12px 16px; text-decoration: none; color: var(--yazi); }
.gezinme a:hover { border-color: var(--mavi); }
.gezinme small { display: block; color: var(--soluk); font-size: .78rem; text-transform: uppercase; letter-spacing: .6px; }
.gezinme .sonraki { text-align: right; grid-column: 2; }
.okuma-cubugu { position: fixed; top: 60px; left: 0; height: 3px; background: #7fd39b; width: 0; z-index: 41; transition: width .1s; }
.konum-bildirim { position: fixed; bottom: 18px; left: 50%; transform: translateX(-50%); background: var(--lacivert); color: var(--kart); padding: 10px 16px; border-radius: 12px; box-shadow: var(--golge-buyuk); z-index: 60; font-size: .9rem; display: flex; gap: 12px; align-items: center; max-width: calc(100vw - 32px); }
.konum-bildirim button { background: transparent; border: 1px solid currentColor; color: inherit; border-radius: 8px; padding: 3px 10px; cursor: pointer; font: inherit; font-size: .85rem; }
@media (max-width: 1000px) {
  .okuma { grid-template-columns: 1fr; gap: 14px; }
  .icindekiler { position: static; max-height: none; }
  .icindekiler:not([open]) { padding-bottom: 6px; }
  .okuma-bas h1 { font-size: 1.45rem; }
}

/* ---------- ders içeriği (paket HTML'i) ---------- */
.icerik { font-family: var(--okuma-tipi); font-size: 1.03rem; line-height: 1.72; max-width: 820px; overflow-wrap: break-word; }
.icerik h2 { font-size: 1.38rem; color: var(--mavi); margin: 2.1rem 0 .8rem; padding-bottom: .35rem; border-bottom: 2px solid var(--cizgi); }
.icerik h3 { font-size: 1.12rem; color: var(--lacivert); margin: 1.5rem 0 .55rem; }
.icerik h4 { font-size: 1rem; margin: 1.2rem 0 .4rem; }
.icerik h3.ornek { background: var(--turuncu-acik); border-left: 5px solid #e39a23; padding: 7px 12px; border-radius: 0 8px 8px 0; color: var(--turuncu); }
.icerik h3.vaka { background: var(--mor-acik); border-left: 5px solid #7a55c7; padding: 7px 12px; border-radius: 0 8px 8px 0; color: var(--mor); }
.icerik p { margin: .65rem 0; }
.icerik ul, .icerik ol { padding-left: 1.4rem; margin: .5rem 0 .8rem; }
.icerik li { margin: .25rem 0; }
.icerik li > p { margin: .2rem 0; }
.icerik strong { color: var(--lacivert); }
.icerik table { border-collapse: collapse; width: 100%; margin: 14px 0 18px; font-size: .92rem; line-height: 1.5; display: block; overflow-x: auto; -webkit-overflow-scrolling: touch; }
.icerik thead, .icerik tbody { width: 100%; }
.icerik th { background: var(--mavi-acik); color: var(--lacivert); text-align: left; font-weight: 700; }
.icerik th, .icerik td { border: 1px solid var(--cizgi-koyu); padding: 7px 10px; vertical-align: top; min-width: 90px; }
.icerik tbody tr:nth-child(even) td { background: var(--kart-2); }
.icerik blockquote { margin: 14px 0; padding: 10px 16px; border-left: 4px solid #e0a43a; background: var(--turuncu-acik); border-radius: 0 8px 8px 0; }
.icerik blockquote p { margin: .3rem 0; }
.icerik code { font-family: Consolas, "Cascadia Mono", "Courier New", monospace; font-size: .88em; background: var(--kod-zemin); border: 1px solid var(--cizgi); padding: 0 4px; border-radius: 4px; }
.icerik pre { background: var(--kod-zemin); border: 1px solid var(--cizgi); border-radius: 10px; padding: 12px 14px; font-size: .86rem; line-height: 1.5; overflow-x: auto; white-space: pre; }
.icerik pre code { background: none; border: 0; padding: 0; font-size: inherit; }
.icerik hr { border: none; border-top: 1px solid var(--cizgi); margin: 24px 0; }
.icerik a { word-break: break-word; }
.icerik .kutu { border-radius: 12px; padding: 4px 18px 12px; margin: 24px 0 14px; border: 1px solid; }
.icerik .kutu h2 { border-bottom: none; margin-top: 12px; font-size: 1.15rem; }
.icerik .k-sahada { background: var(--yesil-acik); border-color: var(--yesil-cizgi); }
.icerik .k-sahada h2 { color: var(--yesil); }
.icerik .k-hata { background: var(--kirmizi-acik); border-color: var(--kirmizi-cizgi); }
.icerik .k-hata h2 { color: var(--kirmizi); }
.icerik .k-ozet, .icerik .k-hedef { background: var(--mavi-zemin); border-color: color-mix(in srgb, var(--mavi) 28%, var(--cizgi)); }
.icerik .k-ozet h2, .icerik .k-hedef h2 { color: var(--lacivert); }
.icerik .k-kaynak { font-size: .9rem; border-color: var(--cizgi); background: var(--kart); }
.hedef-kutu, .ozet-kutu { border-radius: 14px; padding: 16px 20px 10px; margin: 0 0 22px; border: 1px solid color-mix(in srgb, var(--mavi) 28%, var(--cizgi)); background: var(--mavi-zemin); }
.hedef-kutu h2, .ozet-kutu h2 { margin: 0 0 6px; font-size: 1.05rem; display: flex; align-items: center; gap: 8px; color: var(--lacivert); border: 0; padding: 0; }
.hedef-kutu h2 svg, .ozet-kutu h2 svg { width: 20px; height: 20px; color: var(--mavi); }
.ozet-kutu { margin-top: 28px; border-color: var(--yesil-cizgi); background: var(--yesil-acik); }
.ozet-kutu h2 svg { color: var(--yesil); }

/* ---------- test ---------- */
.test-ust { position: sticky; top: 60px; z-index: 30; background: color-mix(in srgb, var(--zemin) 92%, transparent); backdrop-filter: blur(6px); padding: 10px 0; margin-bottom: 8px; border-bottom: 1px solid var(--cizgi); }
.test-ust .ic { display: flex; gap: 16px; align-items: center; flex-wrap: wrap; }
.test-ust .cubuk { flex: 1 1 200px; }
.grup-baslik { font-size: 1.05rem; color: var(--mavi); margin: 28px 0 10px; padding-bottom: 6px; border-bottom: 1px dashed var(--cizgi-koyu); }
.soru { background: var(--kart); border: 1px solid var(--cizgi); border-radius: var(--yaricap); padding: 16px 18px; margin-bottom: 14px; box-shadow: var(--golge); scroll-margin-top: 130px; }
.soru.dogru { border-color: var(--yesil-cizgi); box-shadow: inset 4px 0 0 var(--yesil); }
.soru.yanlis { border-color: var(--kirmizi-cizgi); box-shadow: inset 4px 0 0 var(--kirmizi); }
.soru.kismen { border-color: var(--turuncu-cizgi); box-shadow: inset 4px 0 0 #e39a23; }
.soru-bas { display: flex; gap: 12px; align-items: flex-start; }
.soru-no { flex: none; width: 32px; height: 32px; border-radius: 9px; background: var(--mavi-acik); color: var(--mavi); font-weight: 700; display: grid; place-items: center; font-size: .9rem; }
.soru-kok { flex: 1; min-width: 0; }
.soru-kok p:first-child { margin-top: 3px; }
.secenekler { display: grid; gap: 8px; margin: 12px 0 0 44px; border: 0; padding: 0; }
.secenekler legend { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
.secenek { display: flex; gap: 10px; align-items: flex-start; border: 1px solid var(--cizgi); border-radius: 10px; padding: 9px 12px; cursor: pointer; background: var(--kart); transition: border-color .12s, background .12s; }
.secenek:hover { border-color: var(--mavi); background: var(--mavi-zemin); }
.secenek input { position: absolute; opacity: 0; pointer-events: none; }
.secenek .harf { flex: none; width: 26px; height: 26px; border-radius: 50%; border: 1.5px solid var(--cizgi-koyu); display: grid; place-items: center; font-weight: 700; font-size: .8rem; color: var(--soluk); }
.secenek:has(input:checked) { border-color: var(--mavi); background: var(--mavi-acik); }
.secenek:has(input:checked) .harf { background: var(--mavi); border-color: var(--mavi); color: #fff; }
.secenek:has(input:focus-visible) { outline: 3px solid color-mix(in srgb, var(--mavi) 55%, transparent); outline-offset: 2px; }
.secenek.dogru-sik { border-color: var(--yesil) !important; background: var(--yesil-acik) !important; }
.secenek.dogru-sik .harf { background: var(--yesil) !important; border-color: var(--yesil) !important; color: #fff !important; }
.secenek.yanlis-sik { border-color: var(--kirmizi) !important; background: var(--kirmizi-acik) !important; }
.secenek.yanlis-sik .harf { background: var(--kirmizi) !important; border-color: var(--kirmizi) !important; color: #fff !important; }
.secenekler.kilitli .secenek { cursor: default; }
.secenekler.dy { grid-template-columns: repeat(2, minmax(0, 180px)); }
.secenekler.dy .secenek { justify-content: center; font-weight: 600; }
.acik-alan { margin: 12px 0 0 44px; }
.geri-bildirim { margin: 12px 0 0 44px; border-radius: 10px; padding: 10px 14px; font-size: .95rem; }
.geri-bildirim.dogru { background: var(--yesil-acik); border: 1px solid var(--yesil-cizgi); }
.geri-bildirim.yanlis { background: var(--kirmizi-acik); border: 1px solid var(--kirmizi-cizgi); }
.geri-bildirim.model { background: var(--mavi-zemin); border: 1px solid color-mix(in srgb, var(--mavi) 28%, var(--cizgi)); }
.geri-bildirim .sonuc-baslik { font-weight: 700; margin-bottom: 4px; }
.geri-bildirim.dogru .sonuc-baslik { color: var(--yesil); }
.geri-bildirim.yanlis .sonuc-baslik { color: var(--kirmizi); }
.geri-bildirim p { margin: .3rem 0; }
.oz-degerlendirme { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-top: 10px; }
.oz-degerlendirme .etiket { margin: 0 6px 0 0; }
.oz-secim { position: relative; }
.oz-secim input { position: absolute; opacity: 0; }
.oz-secim span { display: inline-block; border: 1px solid var(--cizgi-koyu); border-radius: 999px; padding: 4px 14px; cursor: pointer; font-size: .88rem; font-weight: 600; background: var(--kart); }
.oz-secim input:focus-visible + span { outline: 3px solid color-mix(in srgb, var(--mavi) 55%, transparent); }
.oz-secim input[value="dogru"]:checked + span { background: var(--yesil); border-color: var(--yesil); color: #fff; }
.oz-secim input[value="kismen"]:checked + span { background: #e39a23; border-color: #e39a23; color: #fff; }
.oz-secim input[value="yanlis"]:checked + span { background: var(--kirmizi); border-color: var(--kirmizi); color: #fff; }
.sonuc-ozet { display: flex; gap: 22px; align-items: center; flex-wrap: wrap; }
@media (max-width: 620px) { .secenekler, .acik-alan, .geri-bildirim { margin-left: 0; } .secenekler.dy { grid-template-columns: 1fr 1fr; } }

/* ---------- lab ---------- */
.lab-kart { display: flex; flex-direction: column; gap: 10px; }
.lab-kart .lab-no { font-size: .75rem; font-weight: 700; letter-spacing: .8px; color: var(--mavi); text-transform: uppercase; }
.lab-kart h3 { margin: 0; font-size: 1.05rem; color: var(--yazi); }
.lab-kart .onkosul { font-size: .82rem; color: var(--soluk); }
.lab-kart .dip { margin-top: auto; display: flex; justify-content: space-between; align-items: center; gap: 10px; flex-wrap: wrap; }
.lab-cerceve-kap { margin: 0 -16px -56px; }
.lab-cerceve { width: 100%; height: calc(100vh - 60px - 58px); border: 0; display: block; background: var(--zemin); }
.lab-serit { display: flex; align-items: center; gap: 12px; padding: 10px 16px; background: var(--kart); border-bottom: 1px solid var(--cizgi); min-height: 58px; flex-wrap: wrap; }
.lab-serit h1 { font-size: 1rem; margin: 0; flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.kap.lab-kap { max-width: none; padding: 0; }
.kap.lab-kap .lab-cerceve-kap { margin: 0; }

/* yönetim */
.arama { display: flex; gap: 10px; flex-wrap: wrap; }
.arama .girdi { max-width: 320px; }
.surum-kart dl { display: grid; grid-template-columns: max-content 1fr; gap: 6px 16px; margin: 0; }
.surum-kart dt { color: var(--soluk); }
.surum-kart dd { margin: 0; font-weight: 600; }
.dosya-alan { border: 2px dashed var(--cizgi-koyu); border-radius: 12px; padding: 22px; text-align: center; background: var(--kart-2); }
.dosya-alan input { margin-top: 10px; }
.parola-kutu { font-family: Consolas, monospace; font-size: 1.1rem; background: var(--kart); border: 1px dashed var(--yesil); padding: 4px 10px; border-radius: 6px; user-select: all; }

@media print {
  .ust, .icindekiler, .okuma-alt, .gezinme, .alt-bilgi, .okuma-cubugu { display: none !important; }
  .okuma { display: block; }
  body { background: #fff; }
}

/* simge boyutları */
.rozet svg { width: 12px; height: 12px; }
.satir-baglanti .son > svg { width: 18px; height: 18px; color: var(--soluk); }
.bildirim > svg { width: 20px; height: 20px; flex: none; margin-top: 2px; }
.kart-bas h2 svg, h2 > svg { width: 20px; height: 20px; vertical-align: -3px; }
main svg { width: 1.15em; height: 1.15em; flex: none; }
.dosya-alan > svg { width: 36px; height: 36px; color: var(--mavi); }
.izgara > .kart + .kart, .yigin > .kart + .kart, .izgara > .kart, .yigin > .kart { margin-top: 0; }
.panel-izgara > *, .izgara > * { min-width: 0; }
.tablo td.kirilir { overflow-wrap: anywhere; }
.baslangic { margin-bottom: 22px; }
.baslangic > summary { cursor: pointer; font-weight: 700; color: var(--lacivert); font-size: 1.1rem; list-style: none; display: flex; justify-content: space-between; align-items: center; }
.baslangic > summary::-webkit-details-marker { display: none; }
.baslangic > summary::after { content: "Göster"; font-size: .85rem; font-weight: 600; color: var(--mavi); }
.baslangic[open] > summary::after { content: "Gizle"; }
.baslangic .icerik { max-width: none; margin-top: 10px; }