/* ders.qdris.xyz — sade, okunaklı, mobil öncelikli */
:root {
  --zemin: #f7f5f0;
  --yuzey: #ffffff;
  --yuzey-2: #f0ede6;
  --metin: #1d1f23;
  --soluk: #6a6e76;
  --cizgi: #dedad1;
  --vurgu: #2f5f8f;
  --vurgu-metin: #ffffff;
  --uyari-z: #fff4d6; --uyari-c: #d9a520;
  --analoji-z: #fff1e3; --analoji-c: #e08a3c;
  --dikkat-z: #fde8e6; --dikkat-c: #c9463d;
  --sinav-z: #e9f0fb; --sinav-c: #3f6fb5;
  --kontrol-z: #eef6ee; --kontrol-c: #3f8a4f;
  --not-z: #f1f0ed; --not-c: #8a877f;
  --basari: #2e7d4f;
  --golge: 0 1px 2px rgba(0,0,0,.05), 0 1px 1px rgba(0,0,0,.03);
  --yaricap: 12px;
  --yazi: system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans", "Helvetica Neue", Arial, sans-serif;
  --okuma: 18px;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --zemin: #16171a;
    --yuzey: #1f2125;
    --yuzey-2: #272a2f;
    --metin: #e6e4df;
    --soluk: #9a9ea6;
    --cizgi: #34373d;
    --vurgu: #7fb0e0;
    --vurgu-metin: #10151b;
    --uyari-z: #3a3120; --uyari-c: #d9a520;
    --analoji-z: #3a2c1f; --analoji-c: #e7a060;
    --dikkat-z: #3b2322; --dikkat-c: #e0736a;
    --sinav-z: #1f2b3d; --sinav-c: #7fa6e0;
    --kontrol-z: #1f3024; --kontrol-c: #74c088;
    --not-z: #26272a; --not-c: #8f8c85;
    --basari: #74c088;
    --golge: none;
  }
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
body {
  margin: 0; background: var(--zemin); color: var(--metin);
  font: 16px/1.55 var(--yazi);
  overflow-x: hidden;
  padding-bottom: calc(72px + env(safe-area-inset-bottom));
  -webkit-tap-highlight-color: transparent;
}
a { color: var(--vurgu); }
img, svg, video { max-width: 100%; height: auto; }
code { font-size: .92em; background: var(--yuzey-2); padding: .1em .3em; border-radius: 4px; }
pre { overflow-x: auto; white-space: pre-wrap; word-break: break-word; }
h1, h2, h3 { line-height: 1.25; }
h2 { font-size: 1.2rem; margin: 1.6rem 0 .6rem; }
h3 { font-size: 1.05rem; margin: .2rem 0 .4rem; }
[hidden] { display: none !important; }

/* ---------- çerçeve */
.ustbar {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; gap: 1rem;
  padding: .5rem 16px; padding-top: calc(.5rem + env(safe-area-inset-top));
  background: color-mix(in srgb, var(--zemin) 92%, transparent);
  backdrop-filter: blur(8px); border-bottom: 1px solid var(--cizgi);
}
.logo { font-weight: 700; text-decoration: none; color: var(--metin); font-size: 1.1rem; min-height: 44px; display: flex; align-items: center; }
.ustmenu { display: none; gap: .25rem; flex-wrap: wrap; }
.ustmenu a { text-decoration: none; color: var(--soluk); padding: .55rem .7rem; border-radius: 8px; min-height: 44px; display: inline-flex; align-items: center; }
.ustmenu a[aria-current] { color: var(--metin); background: var(--yuzey-2); }
main { max-width: 760px; margin: 0 auto; padding: 8px 16px 32px; }
main.genis { max-width: 1400px; }
.altbar {
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 10;
  display: grid; grid-template-columns: repeat(5, 1fr);
  background: var(--yuzey); border-top: 1px solid var(--cizgi);
  padding-bottom: env(safe-area-inset-bottom);
}
.altbar a {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  min-height: 56px; font-size: .75rem; text-decoration: none; color: var(--soluk);
}
.altbar a .ik { font-size: 1.15rem; line-height: 1.2; }
.altbar a[aria-current] { color: var(--vurgu); font-weight: 600; }
@media (min-width: 900px) {
  .ustmenu { display: flex; }
  .altbar { display: none; }
  body { padding-bottom: 0; }
}

.sayfa-baslik { font-size: 1.45rem; margin: .8rem 0 .8rem; }
.kirinti { margin: .6rem 0 0; font-size: .9rem; color: var(--soluk); }
.kirinti a { color: var(--soluk); }
.soluk { color: var(--soluk); }
.kucuk { font-size: .88rem; }
.sayi { font-size: .8rem; font-weight: 600; color: var(--soluk); background: var(--yuzey-2); border-radius: 999px; padding: .1rem .55rem; vertical-align: middle; }
.kutu { background: var(--yuzey); border: 1px solid var(--cizgi); border-radius: var(--yaricap); padding: 12px 16px; margin: 12px 0; box-shadow: var(--golge); }
.kutu > h2:first-child { margin-top: .3rem; }
.uyari { background: var(--uyari-z); border-left: 4px solid var(--uyari-c); padding: .6rem .8rem; border-radius: 8px; margin: .6rem 0; }
.hata-metin { color: var(--dikkat-c); }
.olay { margin: .4rem 0; padding: .45rem .7rem; border-radius: 8px; background: var(--yuzey-2); font-size: .92rem; }
.olay-tatil { background: var(--kontrol-z); }
.olay-sinav { background: var(--dikkat-z); font-weight: 600; }
dl { display: grid; grid-template-columns: minmax(7rem, max-content) 1fr; gap: .35rem 1rem; margin: .4rem 0; }
dt { color: var(--soluk); font-size: .9rem; }
dd { margin: 0; min-width: 0; overflow-wrap: anywhere; }
@media (max-width: 480px) { dl { grid-template-columns: 1fr; gap: .1rem; } dd { margin-bottom: .5rem; } }
ul.duz { list-style: none; margin: 0; padding: 0; }

.rozet {
  display: inline-block; font-size: .75rem; font-weight: 700; letter-spacing: .02em;
  color: #fff; background: var(--renk, #777); border-radius: 6px; padding: .1rem .45rem; vertical-align: middle;
}
.tahmin, .kesin { font-size: .72rem; font-weight: 600; border-radius: 6px; padding: .05rem .4rem; vertical-align: middle; }
.tahmin { background: var(--uyari-z); color: var(--metin); border: 1px dashed var(--uyari-c); }
.kesin { background: var(--kontrol-z); color: var(--metin); }
.cip { display: inline-block; font-size: .8rem; background: var(--yuzey-2); border-radius: 999px; padding: .15rem .6rem; margin: 0 .25rem .25rem 0; }
.cip.vurgu { background: var(--sinav-z); }

/* ---------- düğmeler */
.dugme {
  display: inline-flex; align-items: center; justify-content: center; gap: .3rem;
  min-height: 44px; padding: .5rem .9rem; border-radius: 10px;
  border: 1px solid var(--cizgi); background: var(--yuzey); color: var(--metin);
  font: inherit; font-size: .95rem; text-decoration: none; cursor: pointer;
  touch-action: manipulation; user-select: none; -webkit-user-select: none;
}
.dugme:hover { border-color: var(--soluk); }
.dugme:active { transform: translateY(1px); }
.dugme.birincil { background: var(--vurgu); border-color: var(--vurgu); color: var(--vurgu-metin); font-weight: 600; }
.dugme.sessiz { background: transparent; color: var(--soluk); }
.dugme.buyuk { width: 100%; min-height: 52px; font-size: 1.05rem; }
.dugme:disabled { opacity: .5; cursor: wait; }
.baglanti { background: none; border: 0; padding: .5rem 0; min-height: 44px; color: var(--vurgu); font: inherit; text-align: left; cursor: pointer; }
.dugmeler { display: flex; flex-wrap: wrap; gap: .4rem; margin-top: .6rem; }
.tarih-sec { position: relative; overflow: hidden; }
.tarih-sec input { position: absolute; inset: 0; opacity: 0; width: 100%; height: 100%; cursor: pointer; font-size: 16px; }

/* ---------- görev kartı */
.gorevler { display: grid; gap: 10px; }
.gorev, .hata-kayit {
  background: var(--yuzey); border: 1px solid var(--cizgi); border-left: 5px solid var(--renk, #777);
  border-radius: var(--yaricap); padding: 10px 14px; box-shadow: var(--golge);
  transition: opacity .2s ease;
}
.gorev-ust { display: flex; flex-wrap: wrap; align-items: center; gap: .4rem .6rem; font-size: .85rem; color: var(--soluk); }
.gorev-ust .sure { margin-left: auto; }
.gorev-baslik { margin: .35rem 0 .2rem; font-size: 1.02rem; }
.gorev.durum-yapildi, .gorev.durum-atlandi { opacity: .62; }
.gorev.durum-yapildi .gorev-baslik { text-decoration: line-through; text-decoration-thickness: 1px; }
.etiket-yapildi { color: var(--basari); font-weight: 600; }
.etiket-atlandi { font-style: italic; }
.gecik-not { color: var(--dikkat-c); font-size: .88rem; margin: .1rem 0; }
.ertele-not { color: var(--soluk); font-size: .88rem; margin: .1rem 0; }
.ayrinti summary { cursor: pointer; color: var(--soluk); font-size: .9rem; min-height: 36px; display: flex; align-items: center; }
.ayrinti p { margin: .3rem 0; font-size: .95rem; }
.prova pre { background: var(--yuzey-2); padding: .6rem; border-radius: 8px; font: inherit; font-size: .9rem; }
.gorev-yer { font-size: .9rem; color: var(--soluk); padding: .7rem 14px; border: 1px dashed var(--cizgi); border-radius: var(--yaricap); display: flex; flex-wrap: wrap; align-items: center; gap: .5rem; }

.oturumlar { list-style: none; margin: 0; padding: 0; }
.oturumlar li { display: flex; flex-wrap: wrap; gap: .5rem; align-items: center; padding: .45rem 0; border-bottom: 1px solid var(--cizgi); }
.oturumlar li:last-child { border-bottom: 0; }
.oturumlar .saat { font-variant-numeric: tabular-nums; font-weight: 600; min-width: 6.5rem; }
.oturumlar .amfi { margin-left: auto; color: var(--soluk); }
.oturumlar.kucuk li { padding: .25rem 0; font-size: .85rem; }
.oturumlar.kucuk .saat { min-width: 5.8rem; }

.sayaclar { list-style: none; padding: 0; margin: 0; }
.sayaclar li a { display: flex; flex-wrap: wrap; align-items: center; gap: .4rem; padding: .5rem 0; min-height: 44px; text-decoration: none; color: var(--metin); border-bottom: 1px solid var(--cizgi); }
.sayaclar li:last-child a { border-bottom: 0; }
.gun-sayi { font-weight: 700; font-variant-numeric: tabular-nums; min-width: 4.2rem; color: var(--renk, var(--metin)); }

/* ---------- hafta */
.hafta-ust { display: flex; align-items: center; justify-content: space-between; gap: .5rem; }
.hafta-ust .sayfa-baslik { font-size: 1.1rem; text-align: center; margin: .6rem 0; }
.hafta { display: grid; gap: 14px; }
.gun { background: var(--yuzey-2); border-radius: var(--yaricap); padding: 10px; min-width: 0; }
.gun.bugun { outline: 2px solid var(--vurgu); }
.gun-baslik { margin: .1rem 0 .5rem; font-size: 1rem; display: flex; flex-wrap: wrap; gap: .4rem; align-items: baseline; }
.gun-baslik .sayi { margin-left: auto; }
@media (min-width: 1100px) {
  .hafta { grid-template-columns: repeat(7, minmax(0, 1fr)); gap: 8px; }
  .hafta .gorev { padding: 8px 9px; }
  .hafta .gorev .dugme { min-height: 36px; padding: .3rem .5rem; font-size: .82rem; }
  .hafta .gorev-baslik { font-size: .92rem; }
}

/* ---------- dersler */
.kartlar { display: grid; gap: 12px; }
@media (min-width: 700px) { .kartlar { grid-template-columns: 1fr 1fr; } }
.ders-kart {
  display: flex; flex-direction: column; gap: .3rem; padding: 14px 16px;
  background: var(--yuzey); border: 1px solid var(--cizgi); border-top: 5px solid var(--renk);
  border-radius: var(--yaricap); text-decoration: none; color: var(--metin); box-shadow: var(--golge);
}
.ders-kart .rozet { align-self: flex-start; }
.cubuk { display: block; height: 8px; background: var(--yuzey-2); border-radius: 999px; overflow: hidden; margin: .3rem 0; min-width: 4rem; }
.cubuk > span { display: block; height: 100%; background: var(--renk, var(--vurgu)); border-radius: 999px; }
.uniteler { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.unite-satir a {
  display: grid; grid-template-columns: 3rem 1fr; gap: .1rem .6rem; padding: 10px 12px;
  background: var(--yuzey); border: 1px solid var(--cizgi); border-radius: var(--yaricap); text-decoration: none; color: var(--metin);
}
.unite-satir a > :not(.hafta-no) { grid-column: 2; }
.hafta-no { grid-row: span 3; font-weight: 700; color: var(--renk); font-variant-numeric: tabular-nums; }
.unite-satir.tamam a { border-color: var(--basari); }
.ilerleme-satir { color: var(--soluk); }

/* ---------- ünite */
.unite-ust { margin-top: .4rem; }
.unite-ust .sayfa-baslik { margin: .4rem 0 .2rem; }
.sekmeler {
  position: sticky; top: calc(61px + env(safe-area-inset-top)); z-index: 5;
  display: flex; gap: 2px; margin: 10px -16px 8px; padding: 0 16px;
  background: var(--zemin); border-bottom: 1px solid var(--cizgi);
}
.sekmeler a {
  flex: 1 1 0; min-width: 0; text-align: center; min-height: 44px; display: flex; align-items: center; justify-content: center;
  text-decoration: none; color: var(--soluk); font-size: .92rem; border-bottom: 3px solid transparent;
}
.sekmeler a[aria-current] { color: var(--metin); font-weight: 600; border-bottom-color: var(--renk, var(--vurgu)); }
.on-bilgi ul { margin: .3rem 0 .6rem; padding-left: 1.2rem; }

.adim-listesi { margin: 10px 0; background: var(--yuzey); border: 1px solid var(--cizgi); border-radius: var(--yaricap); padding: 0 14px; }
.adim-listesi summary { min-height: 48px; display: flex; align-items: center; gap: .5rem; cursor: pointer; font-weight: 600; }
.adim-listesi ol { margin: 0 0 .4rem; padding-left: 1.4rem; }
.akis-sayac { font-weight: 400; color: var(--soluk); }
.adim { font-size: var(--okuma); line-height: 1.65; padding: 6px 0 18px; border-bottom: 1px solid var(--cizgi); scroll-margin-top: 120px; }
.adim h2, .problem h2 { font-size: 1.25rem; margin: 1.2rem 0 .7rem; }
.adim-etiket { color: var(--soluk); font-weight: 600; margin-right: .2rem; }
.metin { max-width: 70ch; overflow-wrap: break-word; }
.metin > :first-child { margin-top: 0; }
.metin > :last-child { margin-bottom: 0; }
.metin table { border-collapse: collapse; display: block; overflow-x: auto; max-width: 100%; }
.metin th, .metin td { border: 1px solid var(--cizgi); padding: .3rem .5rem; }
.math.block { overflow-x: auto; overflow-y: hidden; padding: .2rem 0; margin: .8rem 0; max-width: 100%; }
.katex-display { margin: 0; }
.katex { font-size: 1.08em; }
.akis-alt { margin: 18px 0; }
.akis-bitti { text-align: center; }
.once-dusun { color: var(--soluk); font-size: .92rem; font-style: italic; }

.blok { margin: 14px 0; padding: 10px 14px; border-radius: 10px; border-left: 4px solid var(--c, var(--cizgi)); background: var(--z, var(--yuzey-2)); }
.blok-etiket { font-size: .76rem; font-weight: 700; text-transform: uppercase; letter-spacing: .05em; color: var(--c, var(--soluk)); margin-bottom: .25rem; }
.blok-analoji { --z: var(--analoji-z); --c: var(--analoji-c); }
.blok-dikkat { --z: var(--dikkat-z); --c: var(--dikkat-c); }
.blok-sinav { --z: var(--sinav-z); --c: var(--sinav-c); }
.blok-kontrol, .blok-kontrol-et { --z: var(--kontrol-z); --c: var(--kontrol-c); }
.blok-not, .blok-varyant, .blok-ne-istiyor { --z: var(--not-z); --c: var(--not-c); }
.blok-kaynak { --z: transparent; --c: var(--cizgi); font-size: .85rem; color: var(--soluk); padding: 4px 12px; line-height: 1.5; }
.blok-kaynak .blok-etiket { color: var(--soluk); font-size: .7rem; }
.blok-soru { --z: var(--yuzey); --c: var(--vurgu); border: 1px solid var(--cizgi); border-left: 4px solid var(--vurgu); }
.blok-cozum { --z: var(--yuzey); --c: var(--basari); }
.blok-ipucu { --z: var(--uyari-z); --c: var(--uyari-c); }
.blok-sonuc { --z: var(--yuzey); --c: var(--basari); }
.blok-ingilizce { --z: var(--yuzey-2); --c: var(--vurgu); }
.blok-yontem { --z: var(--kontrol-z); --c: var(--kontrol-c); border: 1px solid var(--cizgi); border-left: 4px solid var(--kontrol-c); }
.blok-sozluk { --z: var(--yuzey); --c: var(--vurgu); border: 1px solid var(--cizgi); border-left: 4px solid var(--vurgu); }
.blok-sozluk table, .metin table { border-collapse: collapse; width: 100%; font-size: .95rem; display: block; overflow-x: auto; }
.blok-sozluk th, .blok-sozluk td, .metin th, .metin td { border-bottom: 1px solid var(--cizgi); padding: 6px 8px; text-align: left; vertical-align: top; }
.kutulu { border: 2px solid var(--basari); border-radius: 8px; padding: .4rem .7rem; display: inline-block; max-width: 100%; overflow-x: auto; }
.blok-turetme { --z: var(--yuzey); --c: var(--sinav-c); border: 1px solid var(--cizgi); border-left: 4px solid var(--sinav-c); }
.blok-turetme summary { cursor: pointer; font-weight: 600; min-height: 40px; display: flex; align-items: center; color: var(--sinav-c); }
.kendi-cevap { width: 100%; margin: .5rem 0 .3rem; font: inherit; font-size: 16px; padding: .5rem; border-radius: 8px; border: 1px solid var(--cizgi); background: var(--yuzey); color: var(--metin); resize: vertical; }
.blok-cevap { margin-top: .5rem; padding-top: .5rem; border-top: 1px dashed var(--c); }

.problem { background: var(--yuzey); border: 1px solid var(--cizgi); border-radius: var(--yaricap); padding: 4px 16px 14px; margin: 14px 0; font-size: 17px; line-height: 1.6; scroll-margin-top: 120px; }
.problem > .dugme, .ipuclari .dugme { margin: .3rem .3rem .3rem 0; }
.bilgi-satir { margin: 0 0 .4rem; }
.isaretle fieldset { border: 1px solid var(--cizgi); border-radius: 10px; margin: 14px 0 6px; padding: 8px 12px 12px; font-size: 16px; }
.isaretle legend { font-weight: 600; padding: 0 .3rem; }
.secenekler { display: flex; flex-direction: column; gap: 4px; margin-bottom: .5rem; }
.secenek { display: flex; align-items: center; gap: .6rem; min-height: 44px; padding: 0 .6rem; border-radius: 8px; background: var(--yuzey-2); cursor: pointer; }
.secenek input { width: 20px; height: 20px; }
.hata-alani label { display: block; margin: .4rem 0; }
.hata-alani select, .hata-alani textarea, .sor-form textarea, .giris input, .kopyala input {
  display: block; width: 100%; font: inherit; font-size: 16px; padding: .55rem; min-height: 44px;
  border-radius: 8px; border: 1px solid var(--cizgi); background: var(--yuzey); color: var(--metin); margin-top: .2rem;
}
.kayit-durum { margin-left: .5rem; font-size: .9rem; color: var(--basari); }
.son-deneme { color: var(--soluk); margin: .3rem 0 0; }

.tablo-sar { overflow-x: auto; }
.tablo { border-collapse: collapse; width: 100%; font-size: .95rem; }
.tablo th, .tablo td { text-align: left; padding: .45rem .5rem; border-bottom: 1px solid var(--cizgi); vertical-align: top; }
.sinama { padding-left: 1.2rem; }
.tamam-kutu { text-align: center; }

.sor-form label { font-weight: 600; }
.sor-form .dugme { margin-top: .5rem; }
.soru-cevap { background: var(--yuzey); border: 1px solid var(--cizgi); border-radius: var(--yaricap); padding: 10px 16px; margin: 12px 0; }
.sc-soru { font-weight: 600; border-bottom: 1px dashed var(--cizgi); padding-bottom: .4rem; margin-bottom: .5rem; }
.sc-soru p { margin: .2rem 0; }
.sc-cevap { font-size: 17px; line-height: 1.6; }

/* ---------- hata defteri, sınavlar, menü */
.suzgec { display: flex; flex-wrap: wrap; gap: 6px; margin: 6px 0 10px; }
.suzgec a { min-height: 40px; display: inline-flex; align-items: center; padding: 0 .8rem; border-radius: 999px; border: 1px solid var(--cizgi); text-decoration: none; color: var(--metin); font-size: .9rem; background: var(--yuzey); }
.suzgec a[aria-current] { background: var(--vurgu); color: var(--vurgu-metin); border-color: var(--vurgu); }
.not-metin { white-space: pre-wrap; margin: .2rem 0; }
.kapali-liste summary { cursor: pointer; list-style: none; }
.kapali-liste summary h2 { display: inline; }
.ders-sinav { border-top: 5px solid var(--renk); scroll-margin-top: 70px; }
.sinav { border-top: 1px solid var(--cizgi); padding: .6rem 0; }
.sinav.gecti { opacity: .6; }
.sinav h3 { display: flex; flex-wrap: wrap; gap: .4rem; align-items: center; }
.sinav h3 .gun-sayi { margin-left: auto; min-width: 0; }
.kamp summary { cursor: pointer; min-height: 44px; display: flex; align-items: center; color: var(--vurgu); }
.menu-liste { list-style: none; padding: 0; }
.menu-liste a { display: flex; justify-content: space-between; align-items: center; min-height: 56px; padding: 0 16px; background: var(--yuzey); border: 1px solid var(--cizgi); border-radius: var(--yaricap); margin-bottom: 8px; text-decoration: none; color: var(--metin); }
.kopyala { display: flex; gap: .4rem; }
.kopyala input { margin: 0; min-width: 0; flex: 1; font-size: 14px; }
.ilerleme-dl dd .cubuk { margin-top: .2rem; }

/* ---------- giriş */
.giris-govde { padding-bottom: 0; }
.giris { max-width: 360px; margin: 12vh auto 0; padding: 0 16px; }
.giris h1 { font-size: 2rem; }
.giris label { font-weight: 600; }
.giris .dugme { margin-top: 1rem; }

#bildirim {
  position: fixed; left: 50%; transform: translateX(-50%); bottom: calc(80px + env(safe-area-inset-bottom)); z-index: 20;
  background: var(--metin); color: var(--zemin); padding: .6rem 1rem; border-radius: 10px; font-size: .92rem; max-width: calc(100vw - 32px);
}
@media (min-width: 900px) { #bildirim { bottom: 24px; } }
@media (prefers-reduced-motion: reduce) { * { transition: none !important; scroll-behavior: auto !important; } }