:root {
  --zemin: #f6f7f9; --kart: #ffffff; --yazi: #1b1f24; --soluk: #5a6572;
  --vurgu: #0b5cd5; --cizgi: #d8dde3; --uyari: #fff4d6; --hata: #b42318;
}
@media (prefers-color-scheme: dark) {
  :root { --zemin: #14171a; --kart: #1d2227; --yazi: #e8ecf0; --soluk: #9aa6b2; --vurgu: #6aa6ff; --cizgi: #2f363d; --uyari: #3a3112; --hata: #ff8a80; }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--zemin); color: var(--yazi); font: 16px/1.5 system-ui, sans-serif; }
main { max-width: 760px; margin: 0 auto; padding: 24px 16px; }
h1 { font-size: 1.6rem; margin: 0 0 16px; }
h2 { font-size: 1.2rem; margin: 24px 0 8px; }
label { display: block; margin: 8px 0; font-size: .9rem; color: var(--soluk); }
input, select { display: block; width: 100%; padding: 10px; margin-top: 4px; font: inherit; color: var(--yazi); background: var(--kart); border: 1px solid var(--cizgi); border-radius: 8px; }
.satir { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
@media (max-width: 520px) { .satir { grid-template-columns: 1fr; } }
button, .dugme { display: inline-block; padding: 10px 16px; font: inherit; color: #fff; background: var(--vurgu); border: 0; border-radius: 8px; cursor: pointer; text-decoration: none; }
@media (prefers-color-scheme: dark) { button, .dugme { color: #0b1220; } }
button.ikincil { background: transparent; color: var(--vurgu); border: 1px solid var(--cizgi); }
button.tehlike { background: var(--hata); }
button:disabled { opacity: .6; cursor: wait; }
a { color: var(--vurgu); }
.not { color: var(--soluk); font-size: .9rem; }
.uyari { background: var(--uyari); padding: 10px 12px; border-radius: 8px; }
.ustbar { display: flex; gap: 12px; align-items: center; justify-content: space-between; flex-wrap: wrap; margin-bottom: 16px; }
.ustbar form { margin: 0; }
.kart, .kaynak { background: var(--kart); border: 1px solid var(--cizgi); border-radius: 10px; padding: 12px; margin: 8px 0; }
.kaynak.sorunlu { border-left: 4px solid var(--hata); }
.filtre { background: var(--kart); border: 1px solid var(--cizgi); border-radius: 10px; padding: 8px 12px; margin: 12px 0; }
.havalimanlari { display: flex; flex-wrap: wrap; gap: 4px 16px; }
label.onay { display: flex; align-items: center; gap: 8px; margin: 6px 0; color: var(--yazi); font-size: .95rem; cursor: pointer; }
label.onay input { display: inline-block; width: 18px; height: 18px; margin: 0; padding: 0; }
.tablo { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: .9rem; }
th, td { text-align: left; padding: 8px; border-bottom: 1px solid var(--cizgi); white-space: nowrap; }
footer { text-align: center; color: var(--soluk); font-size: .8rem; padding: 16px; }