/* Ağ Akademisi — tasarım sistemi. Dış kaynak yok (kurum içi çalışır). */
:root {
  --zemin: #f4f6fb;
  --zemin-2: #eaeef6;
  --yuzey: #ffffff;
  --yuzey-2: #f7f9fc;
  --cizgi: #dfe4ee;
  --metin: #172033;
  --metin-2: #4b5a74;
  --soluk: #7a879e;
  --vurgu: #0e8fa8;
  --vurgu-2: #13b5c9;
  --vurgu-zemin: #e3f6f9;
  --mor: #6b5ce7;
  --iyi: #15965a;
  --iyi-zemin: #e3f6ec;
  --uyari: #b7791f;
  --uyari-zemin: #fdf3e0;
  --kotu: #d0433a;
  --kotu-zemin: #fde9e7;
  --kod-zemin: #0f1726;
  --kod-metin: #d6e2f5;
  --golge: 0 1px 2px rgb(16 24 40 / .05), 0 4px 16px rgb(16 24 40 / .06);
  --golge-buyuk: 0 12px 40px rgb(16 24 40 / .14);
  --yaricap: 16px;
  --yaricap-k: 10px;
  --yazi: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --yazi-kod: ui-monospace, "Cascadia Code", "SF Mono", Menlo, Consolas, monospace;
  --ust-yukseklik: 60px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-tema="acik"]) {
    --zemin: #0b1220; --zemin-2: #0f182a; --yuzey: #121c30; --yuzey-2: #17223a; --cizgi: #233150;
    --metin: #e6edf8; --metin-2: #b1bdd3; --soluk: #7d8aa5;
    --vurgu: #2cc4d8; --vurgu-2: #5fe0ee; --vurgu-zemin: #0f3440; --mor: #9a8cff;
    --iyi: #3ccf87; --iyi-zemin: #0f3527; --uyari: #f0b44c; --uyari-zemin: #3a2c12; --kotu: #ff7a70; --kotu-zemin: #3d1715;
    --kod-zemin: #080e1a; --golge: 0 1px 2px rgb(0 0 0 / .3), 0 6px 20px rgb(0 0 0 / .25);
    color-scheme: dark;
  }
}
:root[data-tema="koyu"] {
  --zemin: #0b1220; --zemin-2: #0f182a; --yuzey: #121c30; --yuzey-2: #17223a; --cizgi: #233150;
  --metin: #e6edf8; --metin-2: #b1bdd3; --soluk: #7d8aa5;
  --vurgu: #2cc4d8; --vurgu-2: #5fe0ee; --vurgu-zemin: #0f3440; --mor: #9a8cff;
  --iyi: #3ccf87; --iyi-zemin: #0f3527; --uyari: #f0b44c; --uyari-zemin: #3a2c12; --kotu: #ff7a70; --kotu-zemin: #3d1715;
  --kod-zemin: #080e1a; --golge: 0 1px 2px rgb(0 0 0 / .3), 0 6px 20px rgb(0 0 0 / .25);
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-padding-top: calc(var(--ust-yukseklik) + 16px); }
body {
  margin: 0; font-family: var(--yazi); font-size: 16px; line-height: 1.6; color: var(--metin);
  background: var(--zemin);
  background-image: radial-gradient(1200px 500px at 90% -10%, color-mix(in srgb, var(--vurgu) 10%, transparent), transparent 60%),
                    radial-gradient(900px 400px at -10% 0%, color-mix(in srgb, var(--mor) 8%, transparent), transparent 60%);
  background-attachment: fixed;
  padding-bottom: calc(76px + env(safe-area-inset-bottom));
}
@media (min-width: 900px) { body { padding-bottom: 32px; } }
a { color: var(--vurgu); text-decoration: none; }
a:hover { text-decoration: underline; }
img, svg { max-width: 100%; }
h1, h2, h3, h4 { line-height: 1.25; margin: 0 0 .5em; letter-spacing: -.01em; }
h1 { font-size: clamp(1.5rem, 1.1rem + 1.6vw, 2.1rem); }
h2 { font-size: 1.25rem; }
h3 { font-size: 1.08rem; }
h4 { font-size: .8rem; text-transform: uppercase; letter-spacing: .06em; color: var(--soluk); margin: 1em 0 .4em; }
p { margin: 0 0 .9em; }
code { font-family: var(--yazi-kod); font-size: .88em; background: var(--zemin-2); padding: .12em .38em; border-radius: 6px; overflow-wrap: anywhere; }
pre { background: var(--kod-zemin); color: var(--kod-metin); padding: 14px 16px; border-radius: var(--yaricap-k); overflow-x: auto; font-size: .85rem; line-height: 1.5; }
pre code { background: none; padding: 0; color: inherit; font-size: inherit; overflow-wrap: normal; }
hr { border: 0; border-top: 1px solid var(--cizgi); margin: 2em 0; }
.soluk { color: var(--soluk); }
.kucuk { font-size: .85rem; }
.kirp { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; min-width: 0; }
.satir-ici { display: inline; margin: 0; }
[hidden] { display: none !important; }
:focus-visible { outline: 2px solid var(--vurgu); outline-offset: 2px; border-radius: 6px; }

/* ---------- Düzen ---------- */
.kap { max-width: 1120px; margin: 0 auto; padding: 20px 16px 40px; }
.kap.genis { max-width: 1280px; }
.izgara { display: grid; gap: 16px; margin-bottom: 16px; }
.izgara.iki { grid-template-columns: 1fr; }
.panel-izgara { grid-template-columns: 1fr; }
@media (min-width: 760px) {
  .izgara.iki { grid-template-columns: 1fr 1fr; }
  .panel-izgara { grid-template-columns: 2fr 1fr 1fr; }
}

/* ---------- Üst menü ---------- */
.ust {
  position: sticky; top: 0; z-index: 30; height: var(--ust-yukseklik);
  display: flex; align-items: center; gap: 16px; padding: 0 16px;
  background: color-mix(in srgb, var(--zemin) 82%, transparent);
  backdrop-filter: saturate(1.4) blur(14px); -webkit-backdrop-filter: saturate(1.4) blur(14px);
  border-bottom: 1px solid var(--cizgi);
}
.marka { display: flex; align-items: center; gap: 10px; font-weight: 700; color: var(--metin); letter-spacing: -.01em; }
.marka:hover { text-decoration: none; }
.marka svg, .giris-logo svg { width: 28px; height: 28px; fill: var(--vurgu); stroke: var(--vurgu); stroke-width: 1.8; stroke-linecap: round; }
.ust-nav { display: none; gap: 4px; margin-left: 12px; }
.ust-nav a { color: var(--metin-2); padding: 8px 12px; border-radius: 999px; font-weight: 500; font-size: .95rem; display: inline-flex; align-items: center; gap: 6px; }
.ust-nav a:hover { background: var(--zemin-2); text-decoration: none; }
.ust-nav a.aktif { background: var(--vurgu-zemin); color: var(--vurgu); }
.ust-sag { margin-left: auto; display: flex; align-items: center; gap: 6px; }
@media (min-width: 900px) { .ust-nav { display: flex; } }
.rozet { background: var(--kotu); color: #fff; font-size: .72rem; font-weight: 700; padding: 1px 7px; border-radius: 999px; }
.tema-dugme { width: 38px; height: 38px; display: grid; place-items: center; border: 1px solid var(--cizgi); background: var(--yuzey); border-radius: 50%; cursor: pointer; color: var(--metin-2); }
.tema-dugme svg { width: 18px; height: 18px; fill: none; stroke: currentColor; stroke-width: 2; }

.alt-nav {
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 30;
  display: grid; grid-template-columns: repeat(4, 1fr);
  background: color-mix(in srgb, var(--yuzey) 92%, transparent);
  backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px);
  border-top: 1px solid var(--cizgi); padding-bottom: env(safe-area-inset-bottom);
}
.alt-nav a { position: relative; display: flex; flex-direction: column; align-items: center; gap: 2px; padding: 9px 0 8px; color: var(--soluk); font-size: .72rem; font-weight: 600; }
.alt-nav a:hover { text-decoration: none; }
.alt-nav a.aktif { color: var(--vurgu); }
.alt-nav svg { width: 24px; height: 24px; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.alt-nav .nokta { position: absolute; top: 4px; left: calc(50% + 6px); background: var(--kotu); color: #fff; font-style: normal; font-size: .65rem; padding: 0 6px; border-radius: 999px; }
@media (min-width: 900px) { .alt-nav { display: none; } }

/* ---------- Kartlar, düğmeler, etiketler ---------- */
.kart { background: var(--yuzey); border: 1px solid var(--cizgi); border-radius: var(--yaricap); padding: 20px; box-shadow: var(--golge); margin-bottom: 16px; min-width: 0; }
.izgara > .kart { margin-bottom: 0; }
.kart-baslik { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; margin-bottom: 12px; }
.kart-baslik h2 { margin: 0; }
.ust-yazi { font-size: .78rem; text-transform: uppercase; letter-spacing: .08em; color: var(--soluk); font-weight: 600; margin-bottom: .4em; }
.dugme {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  min-height: 42px; padding: 0 18px; border-radius: 12px; border: 1px solid var(--cizgi);
  background: var(--yuzey); color: var(--metin); font: inherit; font-weight: 600; font-size: .95rem; cursor: pointer;
  transition: transform .08s ease, background .15s ease, border-color .15s ease;
}
.dugme:hover { text-decoration: none; border-color: var(--vurgu); }
.dugme:active { transform: scale(.98); }
.dugme:disabled { opacity: .5; cursor: not-allowed; }
.dugme.birincil { background: linear-gradient(135deg, var(--vurgu), color-mix(in srgb, var(--vurgu) 70%, var(--mor))); border-color: transparent; color: #fff; box-shadow: 0 6px 18px color-mix(in srgb, var(--vurgu) 35%, transparent); }
.dugme.birincil:hover { filter: brightness(1.06); }
.dugme.buyuk { min-height: 52px; padding: 0 26px; font-size: 1.05rem; }
.dugme.kucuk { min-height: 34px; padding: 0 12px; font-size: .85rem; }
.dugme.genis { width: 100%; }
.dugmeler { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 14px; }
.dugmeler.sag { justify-content: flex-end; }
.metin-dugme { background: none; border: 0; color: var(--vurgu); font: inherit; font-weight: 600; cursor: pointer; padding: 6px 8px; font-size: .92rem; }
.etiket { display: inline-flex; align-items: center; gap: 4px; padding: 2px 10px; border-radius: 999px; font-size: .78rem; font-weight: 600; background: var(--zemin-2); color: var(--metin-2); white-space: nowrap; }
.etiket.iyi { background: var(--iyi-zemin); color: var(--iyi); }
.etiket.uyari { background: var(--uyari-zemin); color: var(--uyari); }
.etiket.kotu { background: var(--kotu-zemin); color: var(--kotu); }
.etiket.vurgu { background: var(--vurgu-zemin); color: var(--vurgu); }
a.etiket:hover { text-decoration: none; filter: brightness(.95); }
.cubuk { display: block; height: 8px; background: var(--zemin-2); border-radius: 999px; overflow: hidden; }
.cubuk i { display: block; height: 100%; background: linear-gradient(90deg, var(--vurgu), var(--vurgu-2)); border-radius: inherit; transition: width .4s ease; }
.cubuk.ince { height: 6px; }
.cubuk.kisa { width: 60px; display: inline-block; vertical-align: middle; }
.ders-no { display: inline-grid; place-items: center; min-width: 2.2em; height: 1.7em; padding: 0 .4em; border-radius: 8px; background: var(--vurgu-zemin); color: var(--vurgu); font-weight: 700; font-size: .85em; font-variant-numeric: tabular-nums; }
.ders-no.buyuk { font-size: .6em; vertical-align: middle; margin-right: 6px; }
.uyari-kutu { background: var(--kotu-zemin); color: var(--kotu); border-radius: var(--yaricap-k); padding: 10px 14px; font-weight: 500; }

/* ---------- Giriş ---------- */
.giris-kap { min-height: 100vh; display: grid; place-items: center; padding: 16px; }
.giris-kart { width: min(400px, 100%); background: var(--yuzey); border: 1px solid var(--cizgi); border-radius: 22px; padding: 32px 26px; box-shadow: var(--golge-buyuk); text-align: center; }
.giris-logo { width: 64px; height: 64px; margin: 0 auto 14px; display: grid; place-items: center; border-radius: 18px; background: var(--vurgu-zemin); }
.giris-logo svg { width: 36px; height: 36px; }
.giris-kart form { text-align: left; display: grid; gap: 14px; margin-top: 18px; }
label { display: grid; gap: 6px; font-weight: 600; font-size: .9rem; color: var(--metin-2); }
input, textarea, select {
  font: inherit; color: var(--metin); background: var(--yuzey-2); border: 1.5px solid var(--cizgi);
  border-radius: 12px; padding: 11px 14px; width: 100%; transition: border-color .15s, box-shadow .15s;
}
input:focus, textarea:focus, select:focus { outline: none; border-color: var(--vurgu); box-shadow: 0 0 0 4px color-mix(in srgb, var(--vurgu) 18%, transparent); }
textarea { min-height: 160px; resize: vertical; line-height: 1.55; }

/* ---------- Panel ---------- */
.karsilama { display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; margin: 8px 0 20px; }
.karsilama h1 { margin: 0; }
.seri { display: flex; align-items: center; gap: 6px; background: var(--yuzey); border: 1px solid var(--cizgi); border-radius: 999px; padding: 6px 14px 6px 10px; box-shadow: var(--golge); white-space: nowrap; }
.seri svg { width: 22px; height: 22px; fill: #ff8a3d; }
.seri strong { font-size: 1.15rem; }
.seri span { color: var(--soluk); font-size: .85rem; }
.vurgu-kart { background: linear-gradient(160deg, color-mix(in srgb, var(--vurgu) 12%, var(--yuzey)), var(--yuzey) 60%); }
.siradaki h2 { font-size: 1.35rem; margin: 6px 0 14px; }
.halka-kart { position: relative; display: grid; place-items: center; min-height: 200px; }
.halka { width: 150px; height: 150px; transform: rotate(-90deg); }
.halka circle { fill: none; stroke-width: 11; }
.halka-iz { stroke: var(--zemin-2); }
.halka-dolu { stroke: var(--vurgu); stroke-linecap: round; transition: stroke-dashoffset .8s ease; }
.halka-icerik { position: absolute; text-align: center; }
.halka-icerik strong { font-size: 2rem; display: block; line-height: 1; }
.halka-icerik small { font-size: 1rem; color: var(--soluk); }
.halka-icerik span { font-size: .82rem; color: var(--soluk); }
.tekrar-kart { color: var(--metin); display: flex; flex-direction: column; gap: 2px; }
.tekrar-kart:hover { text-decoration: none; border-color: var(--vurgu); }
.tekrar-kart.bekliyor { background: linear-gradient(160deg, color-mix(in srgb, var(--uyari) 14%, var(--yuzey)), var(--yuzey) 70%); }
.buyuk-sayi { font-size: 2.6rem; line-height: 1.1; }
.tekrar-kart > span { color: var(--soluk); font-size: .9rem; }
.kutular { display: grid; grid-template-columns: repeat(6, 1fr); gap: 6px; margin-top: 14px; }
.kutular span { display: flex; flex-direction: column; align-items: center; background: var(--zemin-2); border-radius: 10px; padding: 6px 2px; }
.kutular b { font-size: 1.05rem; }
.kutular small { font-size: .68rem; color: var(--soluk); }
.kutular.genis { max-width: 520px; margin-top: 10px; }
.faz-listesi { list-style: none; padding: 0; margin: 0; display: grid; gap: 4px; }
.faz-listesi a { display: grid; grid-template-columns: 30px 1fr minmax(60px, 160px) 44px; align-items: center; gap: 12px; padding: 8px 6px; border-radius: 10px; color: var(--metin); }
.faz-listesi a:hover { background: var(--zemin-2); text-decoration: none; }
.faz-no { display: grid; place-items: center; width: 28px; height: 28px; border-radius: 50%; background: var(--zemin-2); font-weight: 700; font-size: .85rem; color: var(--metin-2); }
.faz-listesi .tamam .faz-no { background: var(--iyi); color: #fff; }
.faz-listesi .suruyor .faz-no { background: var(--vurgu); color: #fff; }
.faz-ad { font-weight: 500; font-size: .95rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.faz-sayi { font-size: .82rem; color: var(--soluk); text-align: right; font-variant-numeric: tabular-nums; }
@media (max-width: 520px) { .faz-listesi a { grid-template-columns: 28px 1fr 44px; } .faz-listesi .cubuk { display: none; } }
.ccna-listesi { list-style: none; padding: 0; margin: 0 0 10px; display: grid; gap: 10px; }
.ccna-listesi li { display: grid; grid-template-columns: minmax(0, 1fr) 90px 48px; gap: 10px; align-items: center; font-size: .92rem; }
.ccna-ad b { display: inline-grid; place-items: center; width: 22px; height: 22px; border-radius: 6px; background: var(--zemin-2); font-size: .78rem; margin-right: 4px; }
.ccna-2 i { background: linear-gradient(90deg, var(--mor), #b3a8ff); }
.ccna-3 i { background: linear-gradient(90deg, #2d8cf0, #78b9ff); }
.ccna-4 i { background: linear-gradient(90deg, #e2557b, #ff99b3); }
.ccna-5 i { background: linear-gradient(90deg, #f39c12, #ffd27a); }
.ccna-6 i { background: linear-gradient(90deg, var(--iyi), #8be3b5); }
.isi-haritasi { display: grid; grid-template-columns: repeat(14, 1fr); gap: 5px; }
.isi-haritasi i { aspect-ratio: 1; border-radius: 5px; background: var(--zemin-2); }
.isi-haritasi .s1 { background: color-mix(in srgb, var(--vurgu) 30%, var(--zemin-2)); }
.isi-haritasi .s2 { background: color-mix(in srgb, var(--vurgu) 55%, var(--zemin-2)); }
.isi-haritasi .s3 { background: color-mix(in srgb, var(--vurgu) 80%, var(--zemin-2)); }
.isi-haritasi .s4 { background: var(--vurgu); }
.ara-baslik { margin-top: 18px; font-size: .95rem; }
.etiket-bulutu { list-style: none; padding: 0; margin: 0; display: flex; flex-wrap: wrap; gap: 6px; }
.etiket-bulutu li { background: var(--kotu-zemin); color: var(--kotu); border-radius: 999px; padding: 3px 10px; font-size: .82rem; font-weight: 600; }
.etiket-bulutu small { opacity: .7; margin-left: 2px; }
.deneme-listesi { list-style: none; padding: 0; margin: 0; }
.deneme-listesi a { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 12px; padding: 10px 6px; border-radius: 10px; color: var(--metin); }
.deneme-listesi a:hover { background: var(--zemin-2); text-decoration: none; }

/* ---------- Müfredat ---------- */
.sayfa-baslik { margin: 8px 0 22px; }
.sayfa-baslik h1 { margin-bottom: 4px; }
.faz { margin-bottom: 30px; }
.faz-baslik { display: flex; align-items: center; gap: 12px; margin-bottom: 12px; flex-wrap: wrap; }
.faz-baslik h2 { margin: 0; flex: 1; min-width: 0; }
.faz-rozet { background: linear-gradient(135deg, var(--vurgu), var(--mor)); color: #fff; font-weight: 700; font-size: .78rem; padding: 4px 10px; border-radius: 999px; letter-spacing: .04em; }
.ders-kartlari { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; grid-template-columns: repeat(auto-fill, minmax(min(100%, 300px), 1fr)); }
.ders-karti a { display: flex; gap: 12px; align-items: flex-start; height: 100%; background: var(--yuzey); border: 1px solid var(--cizgi); border-radius: 14px; padding: 14px; color: var(--metin); box-shadow: var(--golge); transition: transform .12s ease, border-color .15s; }
.ders-karti a:hover { text-decoration: none; transform: translateY(-2px); border-color: var(--vurgu); }
.ders-govde { display: grid; gap: 6px; min-width: 0; flex: 1; }
.ders-govde strong { font-weight: 600; line-height: 1.35; }
.ders-meta { display: flex; flex-wrap: wrap; gap: 6px 12px; align-items: center; font-size: .8rem; color: var(--soluk); margin: 0; }
.ders-karti.gecti a { border-left: 4px solid var(--iyi); }
.ders-karti.kosullu a { border-left: 4px solid var(--uyari); }
.ders-karti.siradaki a { border-color: var(--vurgu); box-shadow: 0 0 0 3px color-mix(in srgb, var(--vurgu) 18%, transparent), var(--golge); }
.ders-karti.gecti .ders-no { background: var(--iyi-zemin); color: var(--iyi); }

/* ---------- Ders okuma ---------- */
.okuma-cubugu { position: fixed; top: var(--ust-yukseklik); left: 0; right: 0; height: 3px; z-index: 29; }
.okuma-cubugu i { display: block; height: 100%; width: 0; background: linear-gradient(90deg, var(--vurgu), var(--mor)); }
.ders-baslik { margin: 6px 0 22px; }
.ders-baslik h1 { margin: 6px 0 8px; }
.geri { font-size: .88rem; font-weight: 600; color: var(--soluk); }
.ders-duzen { display: grid; gap: 24px; }
@media (min-width: 1040px) { .ders-duzen { grid-template-columns: 260px minmax(0, 1fr); } }
.icindekiler details { background: var(--yuzey); border: 1px solid var(--cizgi); border-radius: var(--yaricap); padding: 12px 14px; }
@media (min-width: 1040px) { .icindekiler details { position: sticky; top: calc(var(--ust-yukseklik) + 16px); max-height: calc(100vh - var(--ust-yukseklik) - 32px); overflow: auto; } }
.icindekiler summary { font-weight: 700; cursor: pointer; }
.icindekiler ol { list-style: none; padding: 0; margin: 10px 0 0; font-size: .86rem; }
.icindekiler li a { display: block; padding: 4px 8px; border-radius: 8px; color: var(--metin-2); line-height: 1.35; }
.icindekiler li.s3 a { padding-left: 20px; font-size: .82rem; color: var(--soluk); }
.icindekiler li a:hover { background: var(--zemin-2); text-decoration: none; }
.icindekiler li a.aktif { background: var(--vurgu-zemin); color: var(--vurgu); font-weight: 600; }
.okuma { background: var(--yuzey); border: 1px solid var(--cizgi); border-radius: var(--yaricap); padding: clamp(18px, 3vw, 40px); box-shadow: var(--golge); font-size: 1.04rem; line-height: 1.75; min-width: 0; }
.okuma h2 { margin-top: 2em; padding-top: .4em; border-top: 1px solid var(--cizgi); font-size: 1.45rem; }
.okuma h2:first-child { margin-top: 0; border-top: 0; padding-top: 0; }
.okuma h3 { margin-top: 1.6em; font-size: 1.15rem; }
.okuma ul, .okuma ol { padding-left: 1.4em; }
.okuma li { margin: .3em 0; }
.okuma blockquote { margin: 1.2em 0; padding: 12px 16px; border-left: 4px solid var(--vurgu); background: var(--vurgu-zemin); border-radius: 0 var(--yaricap-k) var(--yaricap-k) 0; }
.okuma blockquote p:last-child { margin: 0; }
.okuma strong { color: var(--metin); }
.tablo-kap, .okuma table { display: block; overflow-x: auto; }
table { border-collapse: collapse; margin: 1em 0; font-size: .92rem; min-width: 100%; }
th, td { border-bottom: 1px solid var(--cizgi); padding: 9px 12px; text-align: left; vertical-align: top; }
th { background: var(--yuzey-2); font-weight: 700; font-size: .85rem; color: var(--metin-2); white-space: nowrap; }
tbody tr:hover { background: var(--yuzey-2); }
.ders-sonu { margin-top: 3em; padding: 24px; border-radius: var(--yaricap); background: linear-gradient(160deg, var(--vurgu-zemin), transparent); border: 1px dashed var(--vurgu); }
.ders-sonu h2 { border: 0; margin-top: 0; padding: 0; }
.soru-okuma { font-size: .98rem; }
.ders-gezinti { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 20px; }
.gezinti { display: flex; flex-direction: column; gap: 2px; color: var(--metin); margin: 0; }
.gezinti:hover { text-decoration: none; border-color: var(--vurgu); }
.gezinti small { color: var(--soluk); font-weight: 600; }
.gezinti span { font-weight: 600; font-size: .92rem; }
.gezinti.sonraki { text-align: right; }
.arama { max-width: 420px; margin-top: 10px; }

/* ---------- Test ---------- */
.test-govde main { max-width: 820px; }
.test-baslik { position: sticky; top: var(--ust-yukseklik); z-index: 20; background: color-mix(in srgb, var(--zemin) 90%, transparent); backdrop-filter: blur(10px); padding: 10px 0 12px; margin-bottom: 10px; }
.test-baslik h1 { font-size: 1.15rem; margin: 4px 0 6px; }
.test-durum { display: flex; justify-content: space-between; font-size: .82rem; color: var(--soluk); margin-bottom: 6px; }
.kayit-durumu.hata { color: var(--kotu); font-weight: 600; }
.soru-haritasi { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 16px; }
.soru-haritasi button { width: 34px; height: 34px; border-radius: 9px; border: 1px solid var(--cizgi); background: var(--yuzey); color: var(--metin-2); font: inherit; font-size: .8rem; font-weight: 600; cursor: pointer; }
.soru-haritasi button.dolu { background: var(--vurgu-zemin); color: var(--vurgu); border-color: color-mix(in srgb, var(--vurgu) 40%, transparent); }
.soru-haritasi button.simdiki { outline: 2px solid var(--vurgu); outline-offset: 1px; }
.soru-haritasi button.ccna { border-style: dashed; }
.soru-karti { background: var(--yuzey); border: 1px solid var(--cizgi); border-radius: 18px; padding: clamp(16px, 3vw, 28px); box-shadow: var(--golge); animation: belir .25s ease; }
@keyframes belir { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }
.soru-ust { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-bottom: 12px; font-size: .8rem; color: var(--soluk); }
.soru-ust .soru-no { font-size: 1rem; }
.zorluk { letter-spacing: 2px; color: var(--uyari); }
.soru-metni { font-size: 1.05rem; }
.soru-metni p:last-child { margin-bottom: 0; }
.secenekler { display: grid; gap: 10px; margin-top: 18px; }
.secenek { display: flex; gap: 12px; align-items: flex-start; padding: 13px 14px; border: 1.5px solid var(--cizgi); border-radius: 14px; cursor: pointer; background: var(--yuzey-2); font-weight: 400; color: var(--metin); transition: border-color .12s, background .12s; }
.secenek:hover { border-color: color-mix(in srgb, var(--vurgu) 60%, var(--cizgi)); }
.secenek input { width: 20px; height: 20px; margin: 2px 0 0; accent-color: var(--vurgu); flex: none; }
.secenek:has(input:checked) { border-color: var(--vurgu); background: var(--vurgu-zemin); }
.secenek.dogru { border-color: var(--iyi); background: var(--iyi-zemin); }
.secenek.yanlis { border-color: var(--kotu); background: var(--kotu-zemin); }
.secenek-harf { font-weight: 700; color: var(--soluk); min-width: 1.2em; }
.ipucu { font-size: .85rem; color: var(--soluk); margin-top: 14px; }
.alan-giris { display: grid; gap: 12px; margin-top: 18px; }
.alan-giris label { grid-template-columns: minmax(0, 1fr); }
@media (min-width: 560px) { .alan-giris label { grid-template-columns: 200px 1fr; align-items: center; } }
.alan-giris input, .tek-giris input { font-family: var(--yazi-kod); }
.tek-giris { margin-top: 18px; display: flex; gap: 10px; align-items: center; }
.tek-giris span { color: var(--soluk); }
.eslestir-izgara { display: grid; gap: 10px; margin-top: 18px; }
.eslestir-satir { display: grid; grid-template-columns: 1fr; gap: 6px; padding: 10px 12px; border: 1px solid var(--cizgi); border-radius: 12px; background: var(--yuzey-2); }
@media (min-width: 560px) { .eslestir-satir { grid-template-columns: 1fr 1fr; align-items: center; } }
.sirala-liste { list-style: none; padding: 0; margin: 18px 0 0; display: grid; gap: 8px; counter-reset: sira; }
.sirala-liste li { display: flex; align-items: center; gap: 10px; padding: 10px 12px; border: 1.5px solid var(--cizgi); border-radius: 12px; background: var(--yuzey-2); counter-increment: sira; }
.sirala-liste li::before { content: counter(sira); font-weight: 700; color: var(--vurgu); min-width: 1.4em; }
.sirala-liste .sirala-metin { flex: 1; }
.sirala-liste button { width: 34px; height: 34px; border-radius: 9px; border: 1px solid var(--cizgi); background: var(--yuzey); cursor: pointer; color: var(--metin-2); font-size: 1rem; }
.acik-giris textarea { margin-top: 16px; }
.karakter { text-align: right; font-size: .78rem; color: var(--soluk); margin-top: 4px; }
.test-alt { position: sticky; bottom: calc(66px + env(safe-area-inset-bottom)); display: flex; justify-content: space-between; gap: 10px; padding: 14px 0; background: linear-gradient(to top, var(--zemin) 70%, transparent); }
@media (min-width: 900px) { .test-alt { bottom: 0; } }
.pencere { border: 1px solid var(--cizgi); border-radius: 20px; padding: 24px; width: min(460px, calc(100% - 32px)); background: var(--yuzey); color: var(--metin); box-shadow: var(--golge-buyuk); }
.pencere::backdrop { background: rgb(5 10 20 / .5); backdrop-filter: blur(2px); }

/* ---------- Sonuç ---------- */
.sonuc-ozet { background: var(--yuzey); border: 1px solid var(--cizgi); border-radius: 20px; padding: 22px; margin: 6px 0 18px; box-shadow: var(--golge); }
.sonuc-ozet.gecti { background: linear-gradient(150deg, var(--iyi-zemin), var(--yuzey) 65%); }
.sonuc-ozet.kaldi { background: linear-gradient(150deg, var(--kotu-zemin), var(--yuzey) 65%); }
.sonuc-ozet.bekliyor { background: linear-gradient(150deg, var(--uyari-zemin), var(--yuzey) 65%); }
.sonuc-ana { display: flex; flex-wrap: wrap; gap: 22px; align-items: center; margin-top: 12px; }
.sonuc-puan { display: grid; place-items: center; width: 128px; height: 128px; border-radius: 50%; background: var(--yuzey); border: 6px solid var(--cizgi); text-align: center; flex: none; }
.gecti .sonuc-puan { border-color: var(--iyi); }
.kaldi .sonuc-puan { border-color: var(--kotu); }
.bekliyor .sonuc-puan { border-color: var(--uyari); }
.sonuc-puan strong { font-size: 1.8rem; line-height: 1; display: block; }
.sonuc-puan span { font-size: .8rem; color: var(--soluk); }
.sonuc-yazi { flex: 1; min-width: 240px; }
.sonuc-yazi h1 { margin-bottom: 6px; }
.sonuc-sayilar { display: flex; flex-wrap: wrap; gap: 6px; }
.filtre { display: inline-flex; gap: 4px; background: var(--yuzey); border: 1px solid var(--cizgi); padding: 4px; border-radius: 999px; margin-bottom: 14px; }
.filtre button { border: 0; background: none; font: inherit; font-weight: 600; font-size: .85rem; padding: 6px 14px; border-radius: 999px; color: var(--metin-2); cursor: pointer; }
.filtre button.aktif { background: var(--vurgu); color: #fff; }
.sonuc-listesi { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.sonuc-soru details { background: var(--yuzey); border: 1px solid var(--cizgi); border-left-width: 4px; border-radius: 14px; padding: 4px 18px; box-shadow: var(--golge); }
.sonuc-soru.tam details { border-left-color: var(--iyi); }
.sonuc-soru.yarim details { border-left-color: var(--uyari); }
.sonuc-soru.sifir details { border-left-color: var(--kotu); }
.sonuc-soru.bekleyen details { border-left-color: var(--mor); }
.sonuc-soru summary { display: flex; align-items: center; gap: 10px; padding: 12px 0; cursor: pointer; list-style: none; }
.sonuc-soru summary::-webkit-details-marker { display: none; }
.soru-no { display: inline-grid; place-items: center; min-width: 30px; height: 30px; border-radius: 9px; background: var(--zemin-2); font-weight: 700; font-size: .85rem; }
.sonuc-soru summary .kirp { flex: 1; color: var(--metin-2); font-size: .9rem; }
.puan-rozet { font-weight: 800; min-width: 38px; text-align: center; padding: 3px 8px; border-radius: 8px; background: var(--zemin-2); }
.tam .puan-rozet { background: var(--iyi-zemin); color: var(--iyi); }
.yarim .puan-rozet { background: var(--uyari-zemin); color: var(--uyari); }
.sifir .puan-rozet { background: var(--kotu-zemin); color: var(--kotu); }
.karsilastir { display: grid; gap: 12px; margin: 14px 0; }
@media (min-width: 700px) { .karsilastir { grid-template-columns: 1fr 1fr; } }
.karsilastir > div { background: var(--yuzey-2); border: 1px solid var(--cizgi); border-radius: 12px; padding: 4px 14px 12px; min-width: 0; }
.ogrenci-metin { white-space: pre-wrap; overflow-wrap: anywhere; }
.alan-cevap { display: grid; grid-template-columns: auto 1fr; gap: 4px 12px; margin: 0; }
.alan-cevap dt { color: var(--soluk); font-size: .88rem; }
.alan-cevap dd { margin: 0; }
.alan-cevap dd.iyi code { background: var(--iyi-zemin); color: var(--iyi); }
.alan-cevap dd.kotu code { background: var(--kotu-zemin); color: var(--kotu); }
.aciklama { border-top: 1px dashed var(--cizgi); margin-top: 6px; padding-bottom: 10px; }
.acik-puanlama { background: color-mix(in srgb, var(--mor) 7%, var(--yuzey)); border: 1px solid color-mix(in srgb, var(--mor) 30%, var(--cizgi)); border-radius: 12px; padding: 4px 14px 14px; margin-bottom: 12px; }
.olcutler { margin: 0 0 8px; padding-left: 1.3em; font-size: .92rem; }
.llm-oneri { background: var(--yuzey); border-radius: 10px; padding: 10px 12px; margin: 8px 0; border: 1px solid var(--cizgi); }
.llm-oneri p { margin: 0 0 4px; }
.llm-oneri.yukleniyor::after { content: "Yapay zekâ değerlendiriyor…"; color: var(--soluk); font-size: .88rem; }
.puan-secici { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.puan-secici span { font-weight: 600; font-size: .9rem; }
.puan-secici button { min-width: 52px; height: 40px; border-radius: 10px; border: 1.5px solid var(--cizgi); background: var(--yuzey); font: inherit; font-weight: 700; cursor: pointer; color: var(--metin); }
.puan-secici button.secili { background: var(--mor); color: #fff; border-color: var(--mor); }
.puan-secici button.oneri:not(.secili) { border-color: var(--mor); border-style: dashed; }

/* ---------- Tekrar ---------- */
.tekrar-sahnesi { min-height: 300px; }
.tekrar-bitti { text-align: center; padding: 40px 20px; }
.tekrar-bitti .buyuk-ikon { font-size: 3rem; }
.geri-bildirim { margin-top: 18px; border-radius: 14px; padding: 4px 16px 14px; border: 1px solid var(--cizgi); background: var(--yuzey-2); animation: belir .25s ease; }
.geri-bildirim.dogru { border-color: var(--iyi); background: var(--iyi-zemin); }
.geri-bildirim.yanlis { border-color: var(--kotu); background: var(--kotu-zemin); }
.geri-bildirim.yarim { border-color: var(--uyari); background: var(--uyari-zemin); }
.geri-bildirim .baslik { font-weight: 800; margin: 12px 0 6px; }

/* ---------- İlerleme ---------- */
.ilerleme-tablosu td { vertical-align: middle; }
.ilerleme-tablosu td:first-child a { color: var(--metin); font-weight: 500; display: inline-flex; gap: 8px; align-items: center; }
.deneme-rozetleri { display: flex; flex-wrap: wrap; gap: 4px; }

@media print { .ust, .alt-nav, .icindekiler, .okuma-cubugu, .ders-gezinti { display: none !important; } body { background: #fff; } .okuma { border: 0; box-shadow: none; } }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { animation: none !important; transition: none !important; } }

/* ---------- Ana sayfa: alanlar ve yollar ---------- */
.devam-kart { color: var(--metin); }
.devam-kart:hover { text-decoration: none; border-color: var(--vurgu); }
.devam-kart h2 { margin: 6px 0 10px; }
.alan { margin: 28px 0; }
.alan-baslik { border-left: 5px solid var(--alan-renk); padding-left: 14px; margin-bottom: 14px; }
.alan-baslik h2 { margin: 0 0 2px; font-size: 1.5rem; }
.alan-baslik p { margin: 0; }
.kategori-baslik { font-size: .82rem; text-transform: uppercase; letter-spacing: .07em; color: var(--soluk); margin: 18px 0 8px; }
.yol-kartlari { list-style: none; padding: 0; margin: 0; display: grid; gap: 12px; grid-template-columns: repeat(auto-fill, minmax(min(100%, 260px), 1fr)); }
.yol-karti > a, .yol-karti > div { display: grid; gap: 6px; height: 100%; padding: 16px; border-radius: 14px; border: 1px solid var(--cizgi); background: var(--yuzey); color: var(--metin); box-shadow: var(--golge); }
.yol-karti.aktif > a { border-top: 4px solid var(--alan-renk); transition: transform .12s ease; }
.yol-karti.aktif > a:hover { text-decoration: none; transform: translateY(-2px); }
.yol-karti.yakinda > div { opacity: .7; background: var(--yuzey-2); box-shadow: none; border-style: dashed; }
.yol-karti .etiket { justify-self: start; }
.yol-alt { display: grid; grid-template-columns: 1fr auto; gap: 10px; align-items: center; margin-top: 4px; }
.yol-alt small { color: var(--soluk); }
.yol-alt .cubuk i { background: var(--alan-renk); }
.form-izgara { display: grid; gap: 12px; }
.form-izgara .dugme { justify-self: start; }

/* ---------- Keşfet: alan kartları ve alan sayfası ---------- */
.alan-kartlari { list-style: none; padding: 0; margin: 0; display: grid; gap: 12px; grid-template-columns: repeat(auto-fill, minmax(min(100%, 280px), 1fr)); }
.alan-karti { display: grid; gap: 6px; height: 100%; padding: 18px; border-radius: 16px; background: linear-gradient(160deg, color-mix(in srgb, var(--alan-renk) 14%, var(--yuzey)), var(--yuzey) 70%); border: 1px solid var(--cizgi); border-left: 5px solid var(--alan-renk); color: var(--metin); box-shadow: var(--golge); transition: transform .12s ease; }
.alan-karti:hover { text-decoration: none; transform: translateY(-2px); }
.alan-karti strong { font-size: 1.15rem; }
.alan-sayilar { font-size: .85rem; color: var(--metin-2); }
.kategori { margin: 26px 0; }
.kategori h2 { border-left: 4px solid var(--alan-renk); padding-left: 10px; margin-bottom: 4px; }
.kategori > p { margin: 0 0 10px 14px; }
.yol-detaylari { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.yol-detay details { background: var(--yuzey); border: 1px solid var(--cizgi); border-radius: 14px; padding: 2px 16px; box-shadow: var(--golge); }
.yol-detay.acik details { border-left: 4px solid var(--iyi); }
.yol-detay summary { list-style: none; cursor: pointer; padding: 12px 0; display: grid; gap: 4px; }
.yol-detay summary::-webkit-details-marker { display: none; }
.yol-detay-ust { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px; align-items: center; }
.yol-rozetler { display: flex; flex-wrap: wrap; gap: 4px; }
.etiket.seviye-temel { background: var(--iyi-zemin); color: var(--iyi); }
.etiket.seviye-orta { background: var(--uyari-zemin); color: var(--uyari); }
.etiket.seviye-ileri { background: var(--kotu-zemin); color: var(--kotu); }
.yol-icerik { padding-bottom: 14px; border-top: 1px dashed var(--cizgi); }
.konu-listesi { columns: 2 220px; margin: 0; padding-left: 1.2em; font-size: .92rem; }
.etiket-bulutu.notr li { background: var(--zemin-2); color: var(--metin-2); }
.sayfa-baslik .filtre { margin-top: 10px; }

.rota { display: flex; flex-wrap: wrap; gap: 6px 4px; padding: 0; margin: 0; list-style: none; counter-reset: r; }
.rota li { counter-increment: r; background: var(--zemin-2); border-radius: 999px; padding: 4px 12px 4px 6px; font-size: .88rem; }
.rota li::before { content: counter(r); display: inline-grid; place-items: center; width: 20px; height: 20px; border-radius: 50%; background: var(--uyari); color: #fff; font-size: .72rem; font-weight: 700; margin-right: 6px; }

/* ---------- Alt menü: deneme sınavı ve lab ile altı öğe ---------- */
.alt-nav.alti { grid-template-columns: repeat(6, 1fr); }
@media (max-width: 400px) { .alt-nav.alti a { font-size: .64rem; } .alt-nav.alti svg { width: 22px; height: 22px; } }

/* ---------- Deneme sınavı ---------- */
.sinav-kartlari { list-style: none; padding: 0; margin: 0 0 16px; display: grid; gap: 16px; grid-template-columns: repeat(auto-fill, minmax(min(100%, 420px), 1fr)); }
.sinav-karti { margin: 0; display: flex; flex-direction: column; }
.sinav-karti .dugmeler { margin-top: auto; padding-top: 10px; }
.sinav-karti .ders-meta { margin-bottom: 10px; }
.alan-dagilimi { list-style: none; padding: 0; margin: 0 0 12px; display: flex; flex-wrap: wrap; gap: 6px; }
.alan-dagilimi li { display: inline-flex; gap: 6px; align-items: center; background: var(--zemin-2); border-radius: 999px; padding: 3px 4px 3px 10px; font-size: .8rem; color: var(--metin-2); }
.alan-dagilimi b { background: var(--yuzey); border-radius: 999px; padding: 0 8px; font-variant-numeric: tabular-nums; }
.alan-dagilimi li.eksik { background: var(--uyari-zemin); color: var(--uyari); }
.trend { margin: 4px 0 6px; }
.trend svg { width: 100%; height: 64px; display: block; background: var(--yuzey-2); border-radius: var(--yaricap-k); }
.trend polyline { fill: none; stroke: var(--vurgu); stroke-width: 2.5; stroke-linejoin: round; stroke-linecap: round; vector-effect: non-scaling-stroke; }
.trend .trend-hedef { stroke: var(--iyi); stroke-width: 1; stroke-dasharray: 4 4; vector-effect: non-scaling-stroke; }
.trend figcaption { margin-top: 4px; }
.sinav-ust { display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.sinav-ust h1 { margin: 4px 0 6px; min-width: 0; }
.geri-sayim { font-variant-numeric: tabular-nums; font-weight: 800; font-size: 1.15rem; padding: 4px 12px; border-radius: 999px; background: var(--yuzey); border: 1px solid var(--cizgi); white-space: nowrap; }
.geri-sayim.az { background: var(--uyari-zemin); color: var(--uyari); border-color: var(--uyari); }
.geri-sayim.cok-az { background: var(--kotu-zemin); color: var(--kotu); border-color: var(--kotu); }
.sinav-kural { margin: 6px 0 0; }
.soru-haritasi button.isaretli { border-color: var(--uyari); box-shadow: inset 0 -3px 0 var(--uyari); }
.alan-sonuclari li { grid-template-columns: minmax(0, 1fr) 90px 92px; }
.alan-sonuclari li.iyi .cubuk i { background: var(--iyi); }
.alan-sonuclari li.kotu .cubuk i { background: var(--kotu); }
.hedef-listesi { list-style: none; padding: 0; margin: 0 0 10px; display: grid; gap: 8px; }
.hedef-listesi li { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 10px; padding-bottom: 8px; border-bottom: 1px dashed var(--cizgi); }
.hedef-dersler { display: flex; flex-wrap: wrap; gap: 4px; }
@media (max-width: 520px) { .alan-sonuclari li { grid-template-columns: minmax(0, 1fr) 84px; } .alan-sonuclari .cubuk { display: none; } }

/* ---------- Lab ---------- */
.lab-suzgec { display: flex; flex-wrap: wrap; align-items: flex-end; gap: 12px; }
.lab-suzgec label { flex: 1 1 180px; }
.lab-suzgec .dugmeler { margin-top: 0; }
.lab-tablosu td { vertical-align: middle; }
.lab-tablosu tr.tamam td:first-child .ders-no { background: var(--iyi-zemin); color: var(--iyi); }
.lab-tablosu td:nth-child(2) { min-width: 220px; }
.lab-tablosu td:nth-child(2) a { font-weight: 600; margin-right: 6px; }
.lab-dersler, .lab-hedefler { white-space: normal; }
.lab-dersler .etiket, .lab-hedefler .etiket { margin: 2px 2px 2px 0; }
.lab-baglar { display: flex; flex-wrap: wrap; gap: 6px; margin: 6px 0 0; }
.lab-cozum { margin: 2em 0; border: 1px dashed var(--mor); border-radius: var(--yaricap); padding: 14px 18px; background: color-mix(in srgb, var(--mor) 6%, var(--yuzey)); }
.lab-cozum-ust { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 12px; }
.lab-cozum-ust .dugme { margin-left: auto; }
.lab-cozum [data-cozum] { margin-top: 12px; }
.lab-cozum h2:first-child { border-top: 0; margin-top: 0; padding-top: 0; }
.lab-degerlendirme ul:has(> .task-list-item) { list-style: none; padding-left: 0; }
.lab-degerlendirme .task-list-item { position: relative; padding: 8px 10px 8px 42px; border-radius: var(--yaricap-k); border: 1px solid var(--cizgi); background: var(--yuzey-2); margin: 6px 0; }
.lab-degerlendirme .task-list-item.isaretli { border-color: var(--iyi); background: var(--iyi-zemin); }
.lab-degerlendirme input.lab-madde { position: absolute; left: 12px; top: 10px; width: 20px; height: 20px; margin: 0; padding: 0; accent-color: var(--iyi); cursor: pointer; }
.ders-lablari { margin-top: 2.5em; }
.lab-siradaki { margin: 10px 0 0; }
.hedef-ad { font-weight: 600; font-size: .92rem; flex: 1 1 200px; min-width: 0; }