:root {
  --gece: #0d1b2e;
  --gece2: #152a45;
  --gece3: #1f3a5c;
  --amber: #f5a524;
  --amber2: #ffc25a;
  --turuncu: #e8692a;
  --kagit: #f4efe4;
  --yazi: #e9eef5;
  --soluk: #9fb0c6;
  --yesil: #3fb88a;
  --mavi: #5aa9e6;
  --lcd: #0a1410;
  --lcd-yazi: #ffb23a;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--gece); color: var(--yazi);
  font: 16px/1.5 "Archivo", system-ui, sans-serif;
  background-image: radial-gradient(circle at 50% -10%, #1f3a5c 0, transparent 60%),
    repeating-linear-gradient(90deg, transparent 0 46px, rgba(255,255,255,.025) 46px 48px);
  min-height: 100vh;
}
main { max-width: 560px; margin: 0 auto; padding: 20px 16px 40px; }
.bas { text-align: center; padding: 18px 4px 8px; }
.ust { margin: 0; font: 800 12px "JetBrains Mono", monospace; letter-spacing: .18em; color: var(--amber); text-transform: uppercase; }
h1 { margin: 10px 0 10px; font-weight: 900; font-size: clamp(34px, 9.5vw, 50px); line-height: 1.02; letter-spacing: -.02em; }
h1 em { font-style: normal; color: var(--amber); }
.giris-yazi { color: var(--soluk); margin: 0 auto; max-width: 30em; }
h2 { margin: 0 0 12px; font-size: 21px; font-weight: 900; }

.kart { background: var(--gece2); border: 1px solid rgba(255,255,255,.07); border-radius: 20px; padding: 18px 16px; margin-top: 18px; }
fieldset { border: 0; margin: 0 0 14px; padding: 0; }
legend, .alan > span { display: block; font-weight: 700; font-size: 14px; margin-bottom: 7px; color: var(--yazi); }
.alan > span small, legend small, summary small { color: var(--soluk); font-weight: 500; }
.cipler { display: flex; flex-wrap: wrap; gap: 8px; }
.cipler button {
  flex: 1 1 0; min-width: 72px; padding: 10px 6px; border-radius: 12px; cursor: pointer;
  background: var(--gece3); border: 2px solid transparent; color: var(--yazi);
  font: 700 15px "Archivo", sans-serif; line-height: 1.15;
}
.cipler button small { display: block; font-weight: 500; font-size: 11px; color: var(--soluk); margin-top: 2px; }
.cipler button[aria-pressed="true"] { border-color: var(--amber); background: #2a3a4a; color: var(--amber2); }
.iki { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.alan { display: block; margin-bottom: 14px; }
input, select {
  width: 100%; padding: 12px; border-radius: 12px; border: 2px solid var(--gece3);
  background: #0f2239; color: var(--yazi); font: 600 16px "Archivo", sans-serif;
}
select { appearance: none; background-image: linear-gradient(45deg, transparent 50%, var(--soluk) 50%), linear-gradient(135deg, var(--soluk) 50%, transparent 50%); background-position: calc(100% - 18px) 52%, calc(100% - 12px) 52%; background-size: 6px 6px; background-repeat: no-repeat; padding-right: 30px; }
input:focus, select:focus { outline: none; border-color: var(--amber); }
input[type=range] { padding: 0; border: 0; background: none; accent-color: var(--amber); height: 32px; }
.canli { float: right; font-family: "JetBrains Mono", monospace; color: var(--amber); }
.tl-kutu { position: relative; }
.tl-kutu input { padding-right: 44px; font-family: "JetBrains Mono", monospace; }
.tl-kutu b { position: absolute; right: 14px; top: 50%; transform: translateY(-50%); color: var(--soluk); font-size: 14px; }
.ipucu { display: block; color: var(--soluk); font-size: 13px; margin-top: 5px; line-height: 1.4; }
.ek { margin: 0 0 14px; background: #10243c; border-radius: 14px; padding: 4px 12px; }
.ek summary, .kaynaklar summary { cursor: pointer; font-weight: 700; padding: 10px 0; }
.ek[open] { padding-bottom: 12px; }
.dugme {
  display: block; width: 100%; padding: 14px; border-radius: 14px; border: 2px solid var(--gece3); cursor: pointer;
  background: var(--gece3); color: var(--yazi); font: 800 16px "Archivo", sans-serif;
}
.dugme.ana { background: var(--amber); border-color: var(--amber); color: #1a1205; font-size: 18px; }
.dugme:active { transform: translateY(1px); }
.not { text-align: center; font-size: 13px; color: var(--soluk); margin: 10px 0 0; }
.davet-bant { margin-top: 14px; background: #2a3a4a; border-left: 4px solid var(--amber); border-radius: 12px; padding: 10px 14px; }
.davet-bant p { margin: 0; font-size: 15px; }

/* Sonuç: pompa ekranı */
#sonuc { scroll-margin-top: 10px; }
.pompa {
  margin-top: 22px; border-radius: 24px; padding: 18px 16px 16px; text-align: center;
  background: linear-gradient(#d84f1f, #b83d14); border: 3px solid #f07a3c; box-shadow: 0 10px 30px rgba(0,0,0,.35);
}
.pompa-ust { margin: 0 0 10px; color: #fff3e6; font: 800 14px "JetBrains Mono", monospace; letter-spacing: .2em; }
.ekran-buyuk {
  margin: 0; background: var(--lcd); border-radius: 14px; padding: 14px 10px 10px; border: 3px solid #2d0f03;
  color: var(--lcd-yazi); font: 800 clamp(46px, 15vw, 72px) "JetBrains Mono", monospace; letter-spacing: -.03em; line-height: 1;
  text-shadow: 0 0 18px rgba(255,178,58,.45);
}
.ekran-buyuk small { font-size: .38em; margin-left: 8px; letter-spacing: 0; }
.pompa-alt { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin-top: 10px; }
.pompa-alt div { background: var(--lcd); border-radius: 10px; padding: 8px 4px; border: 2px solid #2d0f03; }
.pompa-alt span { display: block; color: #c98c3a; font: 800 10px "JetBrains Mono", monospace; letter-spacing: .12em; }
.pompa-alt b { display: block; color: var(--lcd-yazi); font: 800 clamp(14px, 4.4vw, 19px) "JetBrains Mono", monospace; white-space: nowrap; }
.pompa-not { margin: 12px 0 0; color: #fff3e6; font-size: 14px; }

.grup-baslik { display: flex; justify-content: space-between; font-weight: 800; margin: 14px 0 6px; color: var(--amber2); }
.grup-baslik b { font-family: "JetBrains Mono", monospace; }
.kalemler { list-style: none; margin: 0; padding: 0; }
.kalemler li { padding: 9px 0; border-bottom: 1px dashed rgba(255,255,255,.1); }
.kalemler .ust-satir { display: flex; align-items: baseline; gap: 8px; }
.kalemler .ad { flex: 1; font-weight: 700; }
.kalemler .tutar { font: 800 15px "JetBrains Mono", monospace; white-space: nowrap; }
.kalemler .cubuk { height: 6px; border-radius: 3px; background: rgba(255,255,255,.07); margin: 6px 0 4px; overflow: hidden; }
.kalemler .cubuk i { display: block; height: 100%; background: var(--amber); border-radius: 3px; }
.kalemler .gorunmez .cubuk i { background: var(--mavi); }
.kalemler .aciklama { font-size: 12.5px; color: var(--soluk); line-height: 1.35; }
.et { display: inline-block; font: 800 10px "JetBrains Mono", monospace; letter-spacing: .06em; padding: 2px 6px; border-radius: 6px; text-transform: uppercase; vertical-align: 2px; }
.et.resmi { background: #1f5a45; color: #b8f0d6; }
.et.guncel { background: #234a72; color: #cfe6ff; }
.et.tahmini { background: #5a4313; color: #ffd98a; }
.etiket-aciklama { font-size: 12px; color: var(--soluk); margin: 12px 0 0; line-height: 2; }

.kiyas { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.kiyas div { background: #10243c; border-radius: 14px; padding: 12px; }
.kiyas b { display: block; font: 800 26px "JetBrains Mono", monospace; color: var(--amber2); line-height: 1.1; }
.kiyas span { font-size: 13px; color: var(--soluk); line-height: 1.3; display: block; margin-top: 4px; }
.kiyas .genis { grid-column: 1 / -1; }

.paylas { margin-top: 18px; display: grid; gap: 10px; }
.geri { background: none; border: 0; color: var(--soluk); font: 600 15px "Archivo", sans-serif; cursor: pointer; padding: 10px; }

.kaynaklar ul { padding-left: 18px; margin: 4px 0 10px; font-size: 13.5px; color: var(--soluk); }
.kaynaklar li { margin-bottom: 6px; }
.kaynaklar a, footer a { color: var(--amber2); }
footer { text-align: center; color: var(--soluk); font-size: 13px; margin-top: 26px; }
.bildirim { position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%); background: var(--amber); color: #1a1205; font-weight: 800; padding: 10px 18px; border-radius: 30px; z-index: 9; }
@media (max-width: 360px) { .iki { grid-template-columns: 1fr; } .cipler button { min-width: 60px; font-size: 14px; } }
.cipler[data-alan="sinif"] { display: grid; grid-template-columns: repeat(4, 1fr); }
@media (max-width: 440px) { .cipler[data-alan="sinif"] { grid-template-columns: 1fr 1fr; } }
.cipler[data-alan="yakit"] button { flex-basis: 28%; }
select { font-size: 15px; }