/* ==========================================================================
   SinavKutuphanem - temel stiller
   ========================================================================== */

:root {
  --indigo: #4F46E5;
  --indigo-koyu: #4338CA;
  --indigo-soluk: #EEF0FE;
  --zemin: #F5F8FF;
  --kart: #FFFFFF;
  --murekkep: #0F172A;
  --gri: #64748B;
  --kenar: #E2E8F0;
  --turuncu: #F59E0B;
  --teal: #0D9488;
  --pembe: #E11D48;
  --yesil: #16A34A;
  --kirmizi: #DC2626;

  --yuvarlak: 12px;
  --yuvarlak-buyuk: 16px;
  --genislik: 1200px;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto,
    'Helvetica Neue', Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--murekkep);
  background: var(--zemin);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 { margin: 0 0 .5em; line-height: 1.2; letter-spacing: -.02em; }
p { margin: 0 0 1em; }
a { color: var(--indigo); text-decoration: none; }
a:hover { text-decoration: underline; }

:focus-visible {
  outline: 3px solid var(--indigo);
  outline-offset: 2px;
  border-radius: 4px;
}

.kapsayici {
  max-width: var(--genislik);
  margin: 0 auto;
  padding: 0 24px;
}

.gri { color: var(--gri); }
.gizli { display: none !important; }

/* --- Ust menu -------------------------------------------------------------- */
.ustmenu {
  background: var(--zemin);
  border-bottom: 1px solid var(--kenar);
  position: sticky;
  top: 0;
  z-index: 50;
}

.ustmenu .kapsayici {
  display: flex;
  align-items: center;
  gap: 32px;
  height: 72px;
}

.logo {
  font-size: 22px;
  font-weight: 800;
  color: var(--murekkep);
  letter-spacing: -.03em;
  white-space: nowrap;
}
.logo:hover { text-decoration: none; }
.logo span { color: var(--indigo); }

.menu {
  display: flex;
  gap: 28px;
  list-style: none;
  margin: 0;
  padding: 0;
  flex: 1;
}
.menu a {
  color: var(--gri);
  font-size: 15px;
  font-weight: 500;
}
.menu a:hover { color: var(--murekkep); text-decoration: none; }
.menu a.etkin { color: var(--indigo); font-weight: 600; }

.menu-ac {
  display: none;
  background: none;
  border: 1px solid var(--kenar);
  border-radius: 8px;
  padding: 8px 10px;
  cursor: pointer;
  margin-left: auto;
}
.menu-ac span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--murekkep);
  margin: 3px 0;
}

/* --- Butonlar -------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 24px;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  font-family: inherit;
  transition: background-color .15s, color .15s, border-color .15s;
}
.btn:hover { text-decoration: none; }

.btn-birincil { background: var(--indigo); color: #fff; }
.btn-birincil:hover { background: var(--indigo-koyu); }

.btn-soluk { background: var(--indigo-soluk); color: var(--indigo); }
.btn-soluk:hover { background: #E0E4FD; }

.btn-cizgi { background: #fff; color: var(--murekkep); border-color: var(--kenar); }
.btn-cizgi:hover { border-color: var(--gri); }

.btn-beyaz { background: #fff; color: var(--indigo); }
.btn-beyaz:hover { background: #F1F3FF; }

.btn[disabled] { opacity: .5; cursor: not-allowed; }

/* --- Bolum basliklari ------------------------------------------------------ */
.bolum { padding: 72px 0; }
.bolum-beyaz { background: #fff; }

.etiket {
  display: block;
  font-size: 13px;
  font-weight: 700;
  color: var(--indigo);
  letter-spacing: .08em;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.bolum-baslik { font-size: 34px; font-weight: 700; margin-bottom: 8px; }
.bolum-alt { color: var(--gri); max-width: 60ch; }

.bolum-ust {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: 24px;
  margin-bottom: 36px;
  flex-wrap: wrap;
}

/* --- Hero ------------------------------------------------------------------ */
.hero {
  position: relative;
  overflow: hidden;
  padding: 96px 0 88px;
}
.hero::after {
  content: '';
  position: absolute;
  right: -120px;
  top: -60px;
  width: 520px;
  height: 520px;
  border-radius: 50%;
  background: #E6E4FB;
  opacity: .55;
  z-index: 0;
}
.hero .kapsayici { position: relative; z-index: 1; }

.hero-baslik {
  font-size: clamp(38px, 6vw, 68px);
  font-weight: 800;
  letter-spacing: -.035em;
  max-width: 16ch;
  margin-bottom: 24px;
}
.hero-baslik em { color: var(--indigo); font-style: normal; }

.hero-alt {
  font-size: 18px;
  color: var(--gri);
  max-width: 52ch;
  margin-bottom: 32px;
}

.rozet-satir {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 20px;
}
.rozet-nokta {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--turuncu);
}

.sayaclar {
  display: flex;
  gap: 48px;
  margin-top: 56px;
  flex-wrap: wrap;
}
.sayac-deger { font-size: 30px; font-weight: 800; letter-spacing: -.03em; }
.sayac-etiket { font-size: 14px; color: var(--gri); }

/* --- Kart izgaralari ------------------------------------------------------- */
.izgara {
  display: grid;
  gap: 20px;
  grid-template-columns: repeat(auto-fill, minmax(255px, 1fr));
}
.izgara-3 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }

.kart {
  background: var(--kart);
  border: 1px solid var(--kenar);
  border-radius: var(--yuvarlak-buyuk);
  padding: 24px;
  display: block;
  color: inherit;
}
a.kart:hover {
  text-decoration: none;
  border-color: var(--indigo);
}

.kart-ust {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 20px;
}

.rozet {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  color: #fff;
  font-weight: 800;
  font-size: 13px;
  letter-spacing: .02em;
}

.ok { color: var(--gri); font-size: 18px; line-height: 1; }

.kart-baslik { font-size: 20px; font-weight: 700; margin-bottom: 4px; }
.kart-aciklama { color: var(--gri); font-size: 15px; margin-bottom: 12px; }
.kart-meta { font-size: 14px; color: var(--gri); }

.ozellik-ikon {
  width: 36px;
  height: 36px;
  margin-bottom: 14px;
  display: block;
}

/* --- Ikili bolum (metin + onizleme) --------------------------------------- */
.ikili {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.onizleme {
  background: var(--indigo-soluk);
  border-radius: var(--yuvarlak-buyuk);
  padding: 28px;
}
.onizleme-ust {
  display: flex;
  justify-content: space-between;
  font-size: 14px;
  color: var(--gri);
  margin-bottom: 16px;
}
.onizleme-soru { font-size: 18px; font-weight: 600; margin-bottom: 20px; }
.onizleme-secenek {
  background: #fff;
  border: 1px solid var(--kenar);
  border-radius: 10px;
  padding: 14px 16px;
  margin-bottom: 10px;
  font-size: 15px;
}
.onizleme-secenek b { color: var(--indigo); margin-right: 10px; }

/* --- Serit ---------------------------------------------------------------- */
.serit {
  background: var(--indigo);
  color: #fff;
  border-radius: var(--yuvarlak-buyuk);
  padding: 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}
.serit h2 { font-size: 28px; margin-bottom: 6px; }
.serit p { margin: 0; color: rgba(255,255,255,.82); }
.serit .etiket { color: var(--turuncu); }

/* --- Istatistik kutulari --------------------------------------------------- */
.istatistik {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  background: #fff;
  border: 1px solid var(--kenar);
  border-radius: var(--yuvarlak-buyuk);
  overflow: hidden;
}
.istatistik > div { padding: 32px; border-right: 1px solid var(--kenar); }
.istatistik > div:last-child { border-right: none; }
.istatistik b { display: block; font-size: 36px; font-weight: 800; letter-spacing: -.03em; }
.istatistik span { color: var(--gri); font-size: 15px; }

/* --- Kirinti (breadcrumb) -------------------------------------------------- */
.kirinti {
  font-size: 14px;
  color: var(--gri);
  padding: 20px 0 0;
}
.kirinti a { color: var(--gri); }
.kirinti a:hover { color: var(--indigo); }

/* --- Sayfa basligi --------------------------------------------------------- */
.sayfa-ust { padding: 32px 0 44px; }
.sayfa-baslik { font-size: 40px; font-weight: 800; letter-spacing: -.03em; }

.bolum-adi {
  font-size: 15px;
  font-weight: 700;
  color: var(--gri);
  text-transform: uppercase;
  letter-spacing: .06em;
  margin: 40px 0 16px;
}

/* --- Test listesi ---------------------------------------------------------- */
.test-satir {
  display: flex;
  align-items: center;
  gap: 20px;
  background: #fff;
  border: 1px solid var(--kenar);
  border-radius: var(--yuvarlak);
  padding: 18px 22px;
  margin-bottom: 10px;
  color: inherit;
}
a.test-satir:hover { border-color: var(--indigo); text-decoration: none; }
.test-no {
  width: 42px;
  height: 42px;
  flex: 0 0 42px;
  border-radius: 10px;
  background: var(--indigo-soluk);
  color: var(--indigo);
  font-weight: 700;
  display: grid;
  place-items: center;
}
.test-bilgi { flex: 1; min-width: 0; }
.test-bilgi strong { display: block; font-size: 16px; }
.test-bilgi span { font-size: 14px; color: var(--gri); }
.test-durum { font-size: 14px; color: var(--gri); white-space: nowrap; }
.test-durum.tamam { color: var(--yesil); font-weight: 600; }

/* --- Bos durum ------------------------------------------------------------- */
.bos-durum {
  background: #fff;
  border: 1px dashed var(--kenar);
  border-radius: var(--yuvarlak-buyuk);
  padding: 56px 32px;
  text-align: center;
}
.bos-durum h3 { font-size: 20px; }
.bos-durum p { color: var(--gri); max-width: 46ch; margin: 0 auto 20px; }

/* --- Alt bilgi ------------------------------------------------------------- */
.altbilgi {
  background: #fff;
  border-top: 1px solid var(--kenar);
  padding: 48px 0 32px;
  margin-top: 72px;
}
.altbilgi-izgara {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 36px;
}
.altbilgi h4 { font-size: 14px; text-transform: uppercase; letter-spacing: .06em; color: var(--gri); }
.altbilgi ul { list-style: none; margin: 0; padding: 0; }
.altbilgi li { margin-bottom: 8px; }
.altbilgi a { color: var(--murekkep); font-size: 15px; }
.altbilgi-alt {
  border-top: 1px solid var(--kenar);
  padding-top: 20px;
  font-size: 14px;
  color: var(--gri);
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

/* --- Duyarli --------------------------------------------------------------- */
@media (max-width: 900px) {
  .ikili { grid-template-columns: 1fr; gap: 36px; }
  .altbilgi-izgara { grid-template-columns: 1fr 1fr; }
  .istatistik > div { border-right: none; border-bottom: 1px solid var(--kenar); }
}

@media (max-width: 720px) {
  .bolum { padding: 48px 0; }
  .hero { padding: 56px 0 48px; }
  .hero::after { width: 320px; height: 320px; right: -100px; }
  .menu {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: #fff;
    border-bottom: 1px solid var(--kenar);
    flex-direction: column;
    gap: 0;
    padding: 8px 24px 16px;
  }
  .menu.acik { display: flex; }
  .menu li { padding: 10px 0; }
  .menu-ac { display: block; }
  .ustmenu .kapsayici { gap: 12px; }
  .ustmenu .btn { display: none; }
  .sayaclar { gap: 28px; }
  .sayfa-baslik { font-size: 30px; }
  .bolum-baslik { font-size: 26px; }
  .altbilgi-izgara { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}