/* ============================================================
   BİRKOM KOMPRESÖR — site stili
   Palet: makine sarısı / kabin yeşili / grafit çelik
   ============================================================ */

:root {
  --sari: #F2B705;
  --sari-koyu: #D9A404;
  --yesil: #22452F;
  --grafit: #15191C;
  --grafit-2: #1E2429;
  --celik: #3A444C;
  --zemin: #F4F5F3;
  --kart: #FFFFFF;
  --metin: #232A2F;
  --metin-soluk: #5A646B;
  --cizgi: #E2E4E0;
  --turuncu: #E87722;

  --f-baslik: 'Saira Condensed', 'Arial Narrow', sans-serif;
  --f-govde: 'Archivo', 'Helvetica Neue', Arial, sans-serif;

  --genislik: 1160px;
  --radius: 10px;
  --golge: 0 10px 30px rgba(21, 25, 28, .10);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

body {
  font-family: var(--f-govde);
  font-size: 16px;
  line-height: 1.65;
  color: var(--metin);
  background: var(--zemin);
  overflow-x: clip;
}

img { max-width: 100%; height: auto; display: block; }

a { color: inherit; text-decoration: none; }
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible {
  outline: 3px solid var(--sari);
  outline-offset: 2px;
}

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

/* ---------- İmza: emniyet şeridi ---------- */
.serit {
  height: 8px;
  background: repeating-linear-gradient(
    -45deg,
    var(--sari) 0 14px,
    var(--grafit) 14px 28px
  );
}
.serit--ince { height: 5px; width: 72px; border-radius: 2px; }

/* ---------- Üst bilgi çubuğu ---------- */
.ustbar {
  background: var(--grafit);
  color: #B8C0C6;
  font-size: 13px;
  border-bottom: 1px solid rgba(255, 255, 255, .07);
}
.ustbar .kap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  min-height: 38px;
  flex-wrap: wrap;
  padding-top: 4px;
  padding-bottom: 4px;
}
.ustbar__grup { display: flex; gap: 20px; flex-wrap: wrap; }
.ustbar a { display: inline-flex; align-items: center; gap: 6px; }
.ustbar a:hover { color: var(--sari); }
.ustbar svg { width: 14px; height: 14px; fill: var(--sari); flex-shrink: 0; }

/* ---------- Başlık / menü ---------- */
.baslik {
  background: var(--grafit-2);
  position: sticky;
  top: 0;
  z-index: 50;
  box-shadow: 0 2px 12px rgba(0, 0, 0, .25);
}
.baslik .kap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 76px;
}
.marka { display: flex; align-items: center; gap: 14px; }
.marka__gorsel { height: 54px; width: auto; }
.marka__slogan {
  font-size: 12px;
  color: #8B959C;
  border-left: 2px solid var(--sari);
  padding-left: 12px;
  max-width: 170px;
  line-height: 1.35;
}

.menu { display: flex; align-items: center; gap: 4px; list-style: none; }
.menu > li { position: relative; }
.menu a {
  font-family: var(--f-baslik);
  font-weight: 600;
  font-size: 17px;
  letter-spacing: .06em;
  color: #E8ECEE;
  padding: 26px 16px;
  display: inline-block;
}
.menu > li > a:hover, .menu > li > a.aktif { color: var(--sari); }
.menu > li > a.aktif { box-shadow: inset 0 -3px 0 var(--sari); }

.altmenu {
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--grafit-2);
  min-width: 300px;
  list-style: none;
  border-top: 3px solid var(--sari);
  box-shadow: var(--golge);
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: all .18s ease;
}
.menu li:hover > .altmenu,
.menu li:focus-within > .altmenu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.altmenu a {
  display: block;
  padding: 12px 18px;
  font-size: 15px;
  border-bottom: 1px solid rgba(255, 255, 255, .06);
}
.altmenu a:hover { background: rgba(242, 183, 5, .12); color: var(--sari); }

.menu-dugme {
  display: none;
  background: none;
  border: 2px solid var(--celik);
  border-radius: 6px;
  color: #E8ECEE;
  padding: 8px 12px;
  font-family: var(--f-baslik);
  font-size: 15px;
  letter-spacing: .08em;
  cursor: pointer;
}

/* ---------- Kahraman (ana sayfa) ---------- */
.kahraman {
  background:
    radial-gradient(900px 420px at 85% -10%, rgba(242, 183, 5, .14), transparent 60%),
    linear-gradient(160deg, var(--grafit) 55%, #1B2A21 100%);
  color: #fff;
  overflow: hidden;
}
.kahraman .kap {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 48px;
  align-items: center;
  padding-top: 72px;
  padding-bottom: 72px;
}
.etiket {
  font-family: var(--f-baslik);
  font-weight: 600;
  font-size: 15px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--sari);
  display: block;
  margin-bottom: 14px;
}
.kahraman h1 {
  font-family: var(--f-baslik);
  font-weight: 700;
  font-size: clamp(40px, 5.4vw, 64px);
  line-height: 1.04;
  text-transform: uppercase;
  letter-spacing: .015em;
}
.kahraman h1 em { font-style: normal; color: var(--sari); }
.kahraman p {
  margin-top: 18px;
  color: #B8C0C6;
  font-size: 17px;
  max-width: 480px;
}
.kahraman__eylem { display: flex; gap: 14px; margin-top: 30px; flex-wrap: wrap; }

.dugme {
  font-family: var(--f-baslik);
  font-weight: 600;
  font-size: 17px;
  letter-spacing: .08em;
  text-transform: uppercase;
  padding: 13px 26px;
  border-radius: 6px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  transition: transform .15s ease, box-shadow .15s ease;
}
.dugme:hover { transform: translateY(-2px); }
.dugme--sari { background: var(--sari); color: var(--grafit); box-shadow: 0 6px 18px rgba(242, 183, 5, .3); }
.dugme--cerceve { border: 2px solid var(--celik); color: #E8ECEE; }
.dugme--cerceve:hover { border-color: var(--sari); color: var(--sari); }
.dugme svg { width: 16px; height: 16px; fill: currentColor; }

.kahraman__gorsel {
  background: #fff;
  border-radius: var(--radius);
  padding: 26px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, .45);
  position: relative;
}
.kahraman__gorsel::before {
  content: "";
  position: absolute;
  inset: auto 26px -8px 26px;
  height: 8px;
  background: repeating-linear-gradient(-45deg, var(--sari) 0 14px, var(--grafit) 14px 28px);
  border-radius: 0 0 4px 4px;
}
.kahraman__gorsel figcaption {
  text-align: center;
  font-size: 13px;
  color: var(--metin-soluk);
  padding-top: 12px;
  border-top: 1px solid var(--cizgi);
  margin-top: 16px;
  letter-spacing: .04em;
}

/* hero carousel */
.slaytlar { position: relative; min-height: 260px; }
.slayt {
  display: none;
  align-items: center;
  justify-content: center;
  min-height: 260px;
}
.slayt.aktif { display: flex; animation: slayt-gecis .5s ease; }
.slayt img { max-height: 285px; width: auto; object-fit: contain; }
@keyframes slayt-gecis {
  from { opacity: 0; transform: translateX(14px); }
  to { opacity: 1; transform: none; }
}
.slayt-alt {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--cizgi);
  margin-top: 16px;
}
.slayt-alt figcaption {
  border: none;
  margin: 0;
  padding: 0;
  text-align: left;
  font-size: 13px;
  color: var(--metin-soluk);
  letter-spacing: .04em;
}
.slayt-alt figcaption a:hover { color: var(--turuncu); }
.noktalar { display: flex; gap: 8px; }
.noktalar button {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  border: 2px solid var(--celik);
  background: transparent;
  padding: 0;
  cursor: pointer;
}
.noktalar button.aktif { background: var(--sari); border-color: var(--sari); }
.slayt-ok {
  border: none;
  background: var(--zemin);
  color: var(--celik);
  width: 30px;
  height: 30px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 14px;
  line-height: 1;
  flex-shrink: 0;
}
.slayt-ok:hover { background: var(--sari); color: var(--grafit); }

/* ---------- Distribütör bandı ---------- */
.band {
  background: var(--sari);
  color: var(--grafit);
}
.band .kap {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 22px;
  flex-wrap: wrap;
  padding-top: 18px;
  padding-bottom: 18px;
  text-align: center;
}
.band img { height: 32px; width: auto; }
.band strong {
  font-family: var(--f-baslik);
  font-weight: 700;
  font-size: 22px;
  letter-spacing: .1em;
  text-transform: uppercase;
}
.band span { font-weight: 600; font-size: 15px; letter-spacing: .05em; }

/* ---------- Bölümler ---------- */
.bolum { padding: 72px 0; }
.bolum--beyaz { background: #fff; }
.bolum__baslik { margin-bottom: 42px; max-width: 720px; }
.bolum__baslik h2 {
  font-family: var(--f-baslik);
  font-weight: 700;
  font-size: clamp(30px, 3.6vw, 42px);
  text-transform: uppercase;
  line-height: 1.1;
  margin: 10px 0 14px;
}
.bolum__baslik p { color: var(--metin-soluk); }

/* ---------- Ürün kartları ---------- */
.kartlar {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 26px;
}
.kart {
  background: var(--kart);
  border: 1px solid var(--cizgi);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: transform .18s ease, box-shadow .18s ease;
}
.kart:hover { transform: translateY(-5px); box-shadow: var(--golge); }
.kart__gorsel {
  background: #fff;
  padding: 22px;
  height: 190px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-bottom: 3px solid var(--sari);
}
.kart__gorsel img { max-height: 100%; width: auto; object-fit: contain; }
.kart__icerik { padding: 22px 24px 24px; display: flex; flex-direction: column; flex: 1; }
.kart h3 {
  font-family: var(--f-baslik);
  font-weight: 700;
  font-size: 23px;
  text-transform: uppercase;
  line-height: 1.15;
  letter-spacing: .02em;
}
.kart__slogan {
  color: var(--turuncu);
  font-size: 13.5px;
  font-weight: 600;
  margin-top: 4px;
  letter-spacing: .02em;
}
.kart p { color: var(--metin-soluk); font-size: 14.5px; margin-top: 12px; flex: 1; }
.kart__devam {
  margin-top: 18px;
  font-family: var(--f-baslik);
  font-weight: 600;
  font-size: 15px;
  letter-spacing: .12em;
  color: var(--yesil);
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.kart__devam::after { content: "►"; font-size: 10px; color: var(--sari-koyu); transition: transform .15s ease; }
.kart:hover .kart__devam::after { transform: translateX(4px); }

/* ---------- İletişim bandı (ana sayfa alt) ---------- */
.iletisim-band { background: var(--yesil); color: #fff; }
.iletisim-band .kap {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 40px;
  align-items: center;
  padding-top: 56px;
  padding-bottom: 56px;
}
.iletisim-band h2 {
  font-family: var(--f-baslik);
  font-weight: 700;
  font-size: clamp(28px, 3.2vw, 38px);
  text-transform: uppercase;
  line-height: 1.12;
}
.iletisim-band p { color: #C6D2C9; margin-top: 10px; }
.iletisim-band__eylem { display: flex; gap: 14px; flex-wrap: wrap; justify-content: flex-end; }

/* ---------- Sayfa kahramanı (iç sayfalar) ---------- */
.sayfa-kahraman {
  background:
    radial-gradient(700px 300px at 90% -20%, rgba(242, 183, 5, .12), transparent 60%),
    var(--grafit);
  color: #fff;
  padding: 56px 0 48px;
}
.sayfa-kahraman .etiket { margin-bottom: 10px; }
.sayfa-kahraman h1 {
  font-family: var(--f-baslik);
  font-weight: 700;
  font-size: clamp(34px, 4.6vw, 54px);
  text-transform: uppercase;
  line-height: 1.05;
}
.sayfa-kahraman .serit--ince { margin-top: 18px; }
.sayfa-kahraman p { color: #B8C0C6; margin-top: 14px; max-width: 640px; font-size: 17px; }

/* ---------- Makale / içerik ---------- */
.icerik { max-width: 820px; }
.icerik h2 {
  font-family: var(--f-baslik);
  font-weight: 700;
  font-size: 30px;
  text-transform: uppercase;
  margin: 40px 0 14px;
  line-height: 1.15;
}
.icerik h2:first-child { margin-top: 0; }
.icerik p { margin-bottom: 16px; }
.icerik p.vurgu {
  font-size: 18px;
  border-left: 4px solid var(--sari);
  padding: 14px 18px;
  background: #fff;
  border-radius: 0 8px 8px 0;
}
.icerik ul { list-style: none; margin: 0 0 16px; }
.icerik ul li {
  padding: 8px 0 8px 26px;
  position: relative;
  border-bottom: 1px dashed var(--cizgi);
}
.icerik ul li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 16px;
  width: 9px;
  height: 9px;
  background: var(--sari);
  transform: rotate(45deg);
}
.icerik strong { color: var(--yesil); }

.duz-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}

/* ---------- Seri bölümleri (ürün detay) ---------- */
.seri {
  background: #fff;
  border: 1px solid var(--cizgi);
  border-radius: var(--radius);
  padding: 36px;
  margin-top: 36px;
}
.seri__ust {
  display: flex;
  align-items: baseline;
  gap: 16px;
  flex-wrap: wrap;
  border-bottom: 1px solid var(--cizgi);
  padding-bottom: 16px;
  margin-bottom: 24px;
}
.seri__ust h2, .seri__ust h3 {
  font-family: var(--f-baslik);
  font-weight: 700;
  font-size: 30px;
  text-transform: uppercase;
  line-height: 1.1;
}
.seri__ust .alt-eti {
  font-family: var(--f-baslik);
  font-weight: 600;
  font-size: 16px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--turuncu);
}
.seri__govde {
  display: grid;
  grid-template-columns: 1.1fr .9fr;
  gap: 32px;
  align-items: start;
}
.seri__govde--tek { grid-template-columns: 1fr; }

/* galeri */
.galeri { display: grid; gap: 12px; }
.galeri__ana {
  border: 1px solid var(--cizgi);
  border-radius: 8px;
  padding: 12px;
  background: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 260px;
}
.galeri__ana img { max-height: 300px; width: auto; object-fit: contain; }
.galeri__kucuk { display: flex; gap: 8px; flex-wrap: wrap; }
.galeri__kucuk button {
  border: 2px solid var(--cizgi);
  border-radius: 6px;
  background: #fff;
  padding: 4px;
  width: 64px;
  height: 52px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
}
.galeri__kucuk button img { max-height: 100%; max-width: 100%; object-fit: contain; }
.galeri__kucuk button.secili { border-color: var(--sari); }

/* teknik tablo */
.teknik { margin-top: 28px; }
.teknik h4 {
  font-family: var(--f-baslik);
  font-weight: 600;
  font-size: 18px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--celik);
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 12px;
}
.teknik h4::before {
  content: "";
  width: 26px;
  height: 8px;
  background: repeating-linear-gradient(-45deg, var(--sari) 0 7px, var(--grafit) 7px 14px);
  border-radius: 2px;
}
.teknik__kaydir { overflow-x: auto; border: 1px solid var(--cizgi); border-radius: 8px; background: #fff; padding: 8px; }
.teknik__kaydir img { min-width: 640px; width: 100%; }
.teknik .dipnot { font-size: 12.5px; color: var(--metin-soluk); margin-top: 10px; }

/* gerçek teknik tablolar */
.tablo {
  border-collapse: collapse;
  width: 100%;
  min-width: 680px;
  font-size: 13.5px;
  line-height: 1.4;
}
.tablo thead th {
  background: var(--grafit);
  color: #fff;
  font-family: var(--f-baslik);
  font-weight: 600;
  font-size: 14px;
  letter-spacing: .05em;
  text-transform: uppercase;
  padding: 9px 12px;
  border: 1px solid #2A3138;
  text-align: center;
  vertical-align: middle;
}
.tablo thead tr:last-child th { background: var(--grafit-2); box-shadow: inset 0 -3px 0 var(--sari); }
.tablo td, .tablo tbody th {
  border: 1px solid var(--cizgi);
  padding: 7px 12px;
  text-align: center;
  vertical-align: middle;
}
.tablo tbody th[scope="row"] {
  font-family: var(--f-baslik);
  font-weight: 600;
  font-size: 14px;
  letter-spacing: .03em;
  color: var(--yesil);
  text-align: left;
  background: #FAFAF8;
  white-space: nowrap;
}
.tablo tbody tr:nth-child(even) td { background: #F7F7F4; }
.tablo tbody tr:hover td { background: rgba(242, 183, 5, .10); }

/* ---------- İletişim sayfası ---------- */
.iletisim-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 32px;
  align-items: start;
}
.bilgi-kart {
  background: var(--grafit);
  color: #E8ECEE;
  border-radius: var(--radius);
  padding: 34px;
}
.bilgi-kart h2 {
  font-family: var(--f-baslik);
  font-weight: 700;
  font-size: 26px;
  text-transform: uppercase;
  margin-bottom: 20px;
}
.bilgi-kart ul { list-style: none; }
.bilgi-kart li {
  display: flex;
  gap: 14px;
  padding: 13px 0;
  border-bottom: 1px solid rgba(255, 255, 255, .08);
  align-items: flex-start;
}
.bilgi-kart li:last-child { border-bottom: none; }
.bilgi-kart svg { width: 18px; height: 18px; fill: var(--sari); flex-shrink: 0; margin-top: 4px; }
.bilgi-kart a:hover { color: var(--sari); }
.bilgi-kart .harita {
  margin-top: 18px;
  display: inline-flex;
}

.form-kart {
  background: #fff;
  border: 1px solid var(--cizgi);
  border-radius: var(--radius);
  padding: 34px;
}
.form-kart h2 {
  font-family: var(--f-baslik);
  font-weight: 700;
  font-size: 26px;
  text-transform: uppercase;
  margin-bottom: 20px;
}
.alan { margin-bottom: 18px; }
.alan label {
  display: block;
  font-weight: 600;
  font-size: 14px;
  margin-bottom: 6px;
  letter-spacing: .02em;
}
.alan input, .alan textarea {
  width: 100%;
  border: 1.5px solid var(--cizgi);
  border-radius: 6px;
  padding: 12px 14px;
  font-family: var(--f-govde);
  font-size: 15px;
  background: var(--zemin);
}
.alan input:focus, .alan textarea:focus { border-color: var(--sari); background: #fff; }
.alan textarea { min-height: 140px; resize: vertical; }

/* ---------- Alt bilgi ---------- */
.altbilgi { background: var(--grafit); color: #B8C0C6; }
.altbilgi__ust .kap {
  display: grid;
  grid-template-columns: 1.3fr 1fr 1fr;
  gap: 40px;
  padding-top: 56px;
  padding-bottom: 48px;
}
.altbilgi h4 {
  font-family: var(--f-baslik);
  font-weight: 600;
  font-size: 18px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: #fff;
  margin-bottom: 18px;
}
.altbilgi img.logo { height: 48px; width: auto; margin-bottom: 16px; }
.altbilgi p { font-size: 14px; max-width: 300px; }
.altbilgi ul { list-style: none; }
.altbilgi li { margin-bottom: 9px; font-size: 14px; }
.altbilgi a:hover { color: var(--sari); }
.altbilgi__iletisim li { display: flex; gap: 10px; align-items: flex-start; }
.altbilgi__iletisim svg { width: 15px; height: 15px; fill: var(--sari); flex-shrink: 0; margin-top: 3px; }
.altbilgi__alt {
  border-top: 1px solid rgba(255, 255, 255, .08);
  font-size: 13px;
}
.altbilgi__alt .kap {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  padding-top: 18px;
  padding-bottom: 18px;
}

/* ---------- Duyarlı ---------- */
@media (max-width: 960px) {
  .kahraman .kap { grid-template-columns: 1fr; padding-top: 52px; padding-bottom: 52px; }
  .kartlar { grid-template-columns: repeat(2, 1fr); }
  .seri__govde, .duz-grid, .iletisim-grid { grid-template-columns: 1fr; }
  .iletisim-band .kap { grid-template-columns: 1fr; }
  .iletisim-band__eylem { justify-content: flex-start; }
  .altbilgi__ust .kap { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 720px) {
  .kahraman .kap > *, .duz-grid > *, .seri__govde > *, .iletisim-grid > * { min-width: 0; }
  .kahraman h1 { font-size: clamp(30px, 9.4vw, 40px); }
  .sayfa-kahraman h1 { font-size: clamp(28px, 8.6vw, 38px); }
  .menu-dugme { display: block; }
  .menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--grafit-2);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 8px 0 16px;
    border-top: 1px solid rgba(255, 255, 255, .08);
    box-shadow: 0 16px 30px rgba(0, 0, 0, .35);
  }
  .menu.acik { display: flex; }
  .menu a { padding: 13px 24px; display: block; }
  .menu > li > a.aktif { box-shadow: inset 3px 0 0 var(--sari); }
  .altmenu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    box-shadow: none;
    border-top: none;
    min-width: 0;
    background: rgba(0, 0, 0, .2);
  }
  .altmenu a { padding-left: 42px; font-size: 14px; }
  .marka__slogan { display: none; }
  .kartlar { grid-template-columns: 1fr; }
  .seri { padding: 24px; }
  .altbilgi__ust .kap { grid-template-columns: 1fr; }
  .teknik__kaydir img { min-width: 560px; }
}