:root {
  --zemin: #f5f6f8;
  --kart: #ffffff;
  --kenar: #dfe3e8;
  --metin: #1c2430;
  --soluk: #6b7684;
  --vurgu: #1f4e78;
  --vurgu-acik: #2d6da3;
  --uyari: #b3261e;
  --uyari-zemin: #fdecea;
}
@media (prefers-color-scheme: dark) {
  :root {
    --zemin: #14181d; --kart: #1c2128; --kenar: #2d353e;
    --metin: #e6e9ed; --soluk: #97a1ad;
    --vurgu: #4a90d9; --vurgu-acik: #6aa9e8;
    --uyari: #ff8a80; --uyari-zemin: #3a1f1d;
  }
}

* { box-sizing: border-box; }
body {
  margin: 0; background: var(--zemin); color: var(--metin);
  font: 15px/1.5 -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
main { max-width: 1400px; margin: 0 auto; padding: 1.25rem; }

/* ---- ust bar ---- */
.ust {
  display: flex; justify-content: space-between; align-items: center;
  gap: 1rem; flex-wrap: wrap;
  background: var(--vurgu); color: #fff; padding: .75rem 1.25rem;
}
.ust strong { font-size: 1.05rem; }
.ust .kurum { opacity: .8; margin-left: .6rem; font-size: .85rem; }
.ust-sag { display: flex; align-items: center; gap: 1rem; font-size: .9rem; }
.cikis { color: #fff; text-decoration: underline; }

/* ---- giris ---- */
.giris-sayfasi { display: grid; place-items: center; min-height: 100vh; }
.giris-kutu {
  background: var(--kart); border: 1px solid var(--kenar); border-radius: 10px;
  padding: 2rem; width: min(380px, 92vw);
  box-shadow: 0 2px 12px rgba(0,0,0,.06);
}
.giris-kutu h1 { margin: 0 0 .25rem; font-size: 1.3rem; }
.giris-kutu .kurum { margin: 0 0 1.25rem; color: var(--soluk); font-size: .85rem; }
.giris-kutu label { display: block; margin-bottom: .9rem; font-size: .85rem; color: var(--soluk); }
.giris-kutu input { width: 100%; margin-top: .3rem; }

input, button, .dugme {
  font: inherit; padding: .5rem .7rem; border-radius: 6px;
  border: 1px solid var(--kenar); background: var(--kart); color: var(--metin);
}
button, .dugme {
  background: var(--vurgu); border-color: var(--vurgu); color: #fff;
  cursor: pointer; text-decoration: none; display: inline-block;
}
button:hover, .dugme:hover { background: var(--vurgu-acik); border-color: var(--vurgu-acik); }
.dugme.ikincil { background: transparent; color: var(--metin); border-color: var(--kenar); }
.dugme.excel { background: #1e7145; border-color: #1e7145; }
.dugme.excel:hover { background: #248852; border-color: #248852; }

/* ---- filtre ---- */
.filtre {
  display: flex; gap: .75rem; align-items: flex-end; flex-wrap: wrap;
  background: var(--kart); border: 1px solid var(--kenar); border-radius: 10px;
  padding: 1rem; margin-bottom: 1rem;
}
.filtre label { display: flex; flex-direction: column; font-size: .8rem; color: var(--soluk); gap: .3rem; }
.filtre label.genis { flex: 1 1 260px; }
.filtre label.genis input { width: 100%; }

.ozet { display: flex; gap: 1.5rem; flex-wrap: wrap; margin-bottom: .75rem; font-size: .9rem; }
.ozet .soluk { color: var(--soluk); }

/* ---- tablo ---- */
.tablo-kaydir { overflow-x: auto; border: 1px solid var(--kenar); border-radius: 10px; background: var(--kart); }
table { border-collapse: collapse; width: 100%; font-size: .88rem; }
th, td { padding: .55rem .7rem; border-bottom: 1px solid var(--kenar); text-align: left; white-space: nowrap; }
th { background: var(--vurgu); color: #fff; position: sticky; top: 0; font-weight: 600; }
tbody tr:hover { background: rgba(127,127,127,.07); }
td.sag, th.sag { text-align: right; }
td.orta { text-align: center; }
td.tekil { font-family: ui-monospace, "Cascadia Mono", Consolas, monospace; font-size: .85rem; }
td:nth-child(3) { white-space: normal; min-width: 240px; }
a.pdf { color: var(--vurgu); text-decoration: none; font-weight: 600; }
a.pdf:hover { text-decoration: underline; }

.sayfalama { display: flex; gap: 1rem; align-items: center; justify-content: center; margin: 1rem 0; }
.sayfalama a { color: var(--vurgu); text-decoration: none; }

.uyari {
  background: var(--uyari-zemin); color: var(--uyari);
  border: 1px solid currentColor; border-radius: 6px;
  padding: .6rem .8rem; margin-bottom: 1rem; font-size: .88rem;
}
.uyari.kalin pre { white-space: pre-wrap; margin: .5rem 0 0; font-size: .8rem; }
.bos { color: var(--soluk); text-align: center; padding: 2.5rem; }