/* MBR METAL — Swiss Industrial (fnoren çizgisi, B2B ton) · NJ-464
   Emsal: E:\APEX\fnoren\assets\css\main.css v3.0 (token adları ve bileşen dili korunur;
   MBR aksanı tav-kızılı, dekor azaltıldı: grid-glow yok, fade yok — satınalmacı hızı). */
@import url('https://fonts.googleapis.com/css2?family=Manrope:wght@300;400;500;600;700&family=IBM+Plex+Mono:wght@400;500;600&family=Inter:opsz,wght@14..32,300;14..32,400;14..32,500;14..32,600&display=swap');

:root {
  --bg:       #F0F2F4;
  --surface:  #ffffff;
  --surface2: #E8EAED;
  --surface-dark: #16181B;
  --text:     #23272E;
  --muted:    #6B6B6B;
  --border:   #D2D7DD;
  --accent:   #C8511F;          /* MBR: tav kızılı — fnoren turuncusunun ağır kardeşi */
  --steel:    #8A9BAE;
  --ok:       #2a7a4f;
  --radius:   0px;
  --max-w:    1200px;
  --gutter:   24px;
  --nav-h:    72px;
  --dur:      0.3s;
  --ease:     cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --font-body: 'Inter', system-ui, -apple-system, sans-serif;
  --font-display: 'Manrope', system-ui, sans-serif;
  --font-mono: 'IBM Plex Mono', 'Consolas', monospace;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 0.9375rem;
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  background-image:
    linear-gradient(rgba(0,0,0,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,0,0,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
}

/* ── TYPOGRAPHY ───────────────────────── */
h1 { font-family: var(--font-display); font-size: clamp(2.6rem, 6.5vw, 5rem); font-weight: 700; letter-spacing: -0.03em; line-height: 0.97; }
h2 { font-family: var(--font-display); font-size: clamp(1.5rem, 3vw, 2.5rem); font-weight: 600; letter-spacing: -0.02em; line-height: 1.15; }
h3 { font-size: 0.875rem; font-weight: 500; }
p  { color: var(--muted); line-height: 1.7; }
a  { color: inherit; text-decoration: none; transition: color var(--dur) var(--ease); }
.mono { font-family: var(--font-mono); }

.label {
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

/* ── LAYOUT ───────────────────────────── */
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 var(--gutter); }
.section    { padding: 5rem 0; }
.section--sm{ padding: 2.5rem 0; }
.section-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 2rem;
  gap: 1rem;
  flex-wrap: wrap;
}

/* ── NAV ──────────────────────────────── */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 var(--gutter);
  z-index: 100;
}
.nav-brand {
  display: flex;
  align-items: center;
  white-space: nowrap;
  margin-right: 1rem;
}
.nav-logo { height: 54px; width: auto; display: block; }   /* NJ-464 Recak: "logo küçük duruyor" */
.nav-links { list-style: none; display: flex; gap: 1.75rem; margin-left: auto; }
.nav-links a { font-size: 0.8125rem; letter-spacing: 0.04em; color: var(--muted); white-space: nowrap; }
.nav-links a:hover, .nav-links a.active { color: var(--accent); }
/* Mobil menü düğmesi (Recak: "mobilde sekme isimleri üç çizgi altına girsin") — üç çizgi + kelime:
   simge tek başına kullanılmaz. Masaüstünde gizli. */
.nav-toggle {
  display: none; align-items: center; gap: 0.55rem; margin-left: auto;
  padding: 0.6rem 0.85rem; border: 1px solid var(--border); background: var(--surface); color: var(--text);
  font: 600 0.75rem/1 var(--font-body); letter-spacing: 0.12em; text-transform: uppercase; cursor: pointer;
}
.nav-toggle .cizgiler { display: flex; flex-direction: column; gap: 3px; }
.nav-toggle .cizgi { display: block; width: 18px; height: 2px; background: currentColor; }
nav.acik .nav-toggle { border-color: var(--accent); color: var(--accent); }

/* ── HERO ─────────────────────────────── */
.hero {
  padding-top: var(--nav-h);
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 78vh;
  border-bottom: 1px solid var(--border);
}
.hero-text {
  padding: 4.5rem calc(var(--gutter) * 2);
  display: flex;
  flex-direction: column;
  justify-content: center;
  border-right: 1px solid var(--border);
}
.hero-text .label { margin-bottom: 1.5rem; }
.hero-text h1 { margin-bottom: 1.5rem; }
.hero-text p  { margin-bottom: 2.25rem; max-width: 38ch; }
.hero-actions { display: flex; gap: 0.75rem; flex-wrap: wrap; }

/* Foto gelene kadar: koyu çelik yüzeyde tipografik ölçü duvarı (uydurma görsel YOK) */
.hero-visual {
  background: var(--surface-dark);
  color: #9AA3AD;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}
.hero-visual img { width: 100%; height: 100%; object-fit: cover; position: absolute; inset: 0; }
.olcu-duvari {
  font-family: var(--font-mono);
  font-size: clamp(0.8rem, 1.4vw, 1.05rem);
  line-height: 2.1;
  letter-spacing: 0.04em;
  columns: 3;
  column-gap: 2.5rem;
  max-height: 100%;
  overflow: hidden;
}
.olcu-duvari span { display: block; }
.olcu-duvari .vurgu { color: var(--accent); }
.side-label {
  position: absolute; left: 16px; bottom: 20px;
  font-family: var(--font-mono);
  font-size: 0.625rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--steel);
}

/* ── SPECS ROW ────────────────────────── */
.specs-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}
.spec-item { border-right: 1px solid var(--border); padding: 1.75rem var(--gutter); }
.spec-item:last-child { border-right: none; }
.spec-num  { font-size: 2rem; font-weight: 300; letter-spacing: -0.02em; display: block; font-family: var(--font-mono); }
.spec-label{ font-size: 0.6875rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); }

/* ── KAPI KARTLARI (D1: mühendis / satınalmacı) ── */
.kapilar { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: var(--border); border: 1px solid var(--border); }
.kapi {
  background: var(--surface);
  padding: 2.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  transition: background var(--dur) var(--ease);
}
.kapi:hover { background: var(--surface2); }
.kapi .mono { color: var(--accent); font-size: 0.75rem; }
.kapi h2 { font-size: 1.5rem; }
.kapi p { font-size: 0.875rem; max-width: 46ch; }
.kapi .git { margin-top: auto; padding-top: 1rem; font-size: 0.75rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--text); }
.kapi:hover .git { color: var(--accent); }

/* ── BUTTONS ──────────────────────────── */
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  border: none;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.btn-primary { background: var(--text); color: #fff; }
.btn-primary:hover { background: var(--accent); color: #fff; }
.btn-outline { background: transparent; color: var(--text); border: 1px solid var(--border); }
.btn-outline:hover { border-color: var(--text); }
.btn-teklif {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
  padding: 0.4rem 0.9rem;
  font-size: 0.6563rem;
  white-space: nowrap;
}
.btn-teklif:hover { background: var(--accent); border-color: var(--accent); color: #fff; }

/* ── ÖLÇÜ TABLOSU (D4/D5: tablo, sayı sağa, mono rakam) ── */
.tablo-arac { display: flex; gap: 0.75rem; align-items: center; margin-bottom: 1rem; flex-wrap: wrap; }
.tablo-arac input[type="search"] {
  flex: 1 1 220px;
  max-width: 320px;
  padding: 0.6rem 0.9rem;
  font: inherit;
  font-size: 0.875rem;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
}
.tablo-arac input[type="search"]:focus { outline: none; border-color: var(--accent); }
.tablo-not { font-size: 0.75rem; color: var(--muted); }

.olcu-tablo-sarici { overflow-x: auto; border: 1px solid var(--border); background: var(--surface); }
table.olcu-tablo { width: 100%; border-collapse: collapse; font-size: 0.875rem; min-width: 560px; }
.olcu-tablo thead th {
  font-size: 0.6563rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  text-align: left;
  padding: 0.8rem 1rem;
  border-bottom: 1px solid var(--border);
  background: var(--surface2);
  white-space: nowrap;
}
.olcu-tablo th.sag, .olcu-tablo td.sag { text-align: right; }
.olcu-tablo tbody td {
  padding: 0.7rem 1rem;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}
.olcu-tablo tbody tr:last-child td { border-bottom: none; }
.olcu-tablo tbody tr:hover { background: var(--surface2); }
/* Ürün adları/ölçüler gövde fontunda (Recak: "ürünlerin yazı fontu kötü") — mono'da Ø sıfıra benziyordu */
.olcu-tablo .aile {
  font-family: var(--font-display); font-size: 1.0625rem; font-weight: 700; letter-spacing: -0.005em;
  font-variant-numeric: tabular-nums lining-nums; white-space: nowrap;
}
.olcu-tablo .aile .x { color: var(--muted); font-weight: 500; margin: 0 0.06em; }
.boylar { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.boy-cip {
  font-family: var(--font-body);
  font-size: 0.8125rem;
  font-weight: 500;
  font-variant-numeric: tabular-nums;
  min-width: 2.4rem;
  text-align: center;
  padding: 0.25rem 0.55rem;
  border: 1px solid var(--border);
  color: var(--text);
  background: var(--surface);
  white-space: nowrap;
}
.sayi { font-family: var(--font-body); font-weight: 500; font-variant-numeric: tabular-nums; }

/* ── ÜRETİM KARTLARI ──────────────────── */
.uretim-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; background: var(--border); border: 1px solid var(--border); }
.uretim-kart { background: var(--surface); padding: 2rem; }
.uretim-kart .mono { color: var(--accent); font-size: 0.6875rem; display: block; margin-bottom: 0.75rem; }
.uretim-kart h3 { font-size: 1rem; margin-bottom: 0.5rem; font-family: var(--font-display); font-weight: 600; }
.uretim-kart p { font-size: 0.8438rem; }

.foto-bekleniyor {
  border: 1px dashed var(--border);
  background: var(--surface2);
  min-height: 260px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

/* ── İLETİŞİM ─────────────────────────── */
.iletisim-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: var(--border); border: 1px solid var(--border); }
.iletisim-blok { background: var(--surface); padding: 2.5rem; }
.iletisim-blok h3 { font-family: var(--font-display); font-size: 1.125rem; margin-bottom: 1rem; }
.iletisim-satir { display: flex; gap: 0.75rem; margin-bottom: 0.6rem; font-size: 0.9063rem; align-items: baseline; }
.iletisim-satir .mono { color: var(--muted); font-size: 0.6875rem; text-transform: uppercase; letter-spacing: 0.1em; min-width: 72px; }

/* ── MARK SYSTEM ──────────────────────── */
.mark-bracket { position: relative; }
.mark-bracket::before, .mark-bracket::after {
  content: '';
  position: absolute;
  opacity: 0.35;
  transition: opacity var(--dur) var(--ease);
}
.mark-bracket::before { top: 10px; left: 10px; width: 12px; height: 12px; border-top: 1.5px solid var(--accent); border-left: 1.5px solid var(--accent); }
.mark-bracket::after  { bottom: 10px; right: 10px; width: 12px; height: 12px; border-bottom: 1.5px solid var(--accent); border-right: 1.5px solid var(--accent); }

hr.divider { border: none; border-top: 1px solid var(--border); margin: 1.5rem 0 2.5rem; }

/* ── FOOTER (D9: ünvan + adres görünür) ── */
footer { border-top: 1px solid var(--border); padding: 2rem 0 2.5rem; background: var(--surface); }
.footer-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--gutter);
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.75rem 2rem;
  font-size: 0.6875rem;
  color: var(--muted);
}
.footer-inner a { color: var(--muted); }
.footer-inner a:hover { color: var(--text); }
.footer-links { display: flex; gap: 1.5rem; align-items: start; }
.footer-unvan { line-height: 1.8; }

/* ── REFERANS ŞERİDİ ──────────────────── */
.ref-serit {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 1.25rem;
  align-items: center;
  margin-top: 1rem;
}
.ref-serit img {
  width: 100%;
  height: 48px;
  object-fit: contain;
  filter: grayscale(1);
  opacity: 0.7;
  transition: filter var(--dur) var(--ease), opacity var(--dur) var(--ease);
}
.ref-serit img:hover { filter: none; opacity: 1; }

/* ── ÜRÜN FOTO ŞERİDİ ─────────────────── */
.foto-serit {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  margin: 1.25rem 0 1.75rem;
}
.foto-serit img { width: 100%; aspect-ratio: 4/3; object-fit: cover; display: block; background: var(--surface2); }
/* iki karelik şerit (somun kapakları): 4 sütunda boş gri alan kalmasın */
.foto-serit--iki { grid-template-columns: repeat(2, 1fr); max-width: 860px; }
/* altı karelik şerit (cıvatalı): 3 × 2, ikinci satırda boş hücre kalmasın */
.foto-serit--uc { grid-template-columns: repeat(3, 1fr); }

/* ── TEKLİF LİSTESİ PANELİ (NJ-464: "dar siyah kutu" yerine ferah kart) ── */
.teklif-panel {
  position: fixed;
  right: 1.25rem; bottom: 1.25rem;
  width: min(400px, calc(100vw - 2rem));
  max-height: min(72vh, 640px);
  overflow-y: auto;
  background: var(--surface);
  border: 1px solid var(--border);
  border-top: 3px solid var(--accent);
  box-shadow: 0 18px 48px rgba(22, 24, 27, 0.16);
  padding: 1.1rem 1.25rem 1.25rem;
  z-index: 200;
}
.tp-bas { display: flex; align-items: center; justify-content: space-between; margin-bottom: 0.75rem; }
.tp-kalemler { display: flex; flex-direction: column; border-top: 1px solid var(--border); }
.tp-kalem {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.5rem 0.1rem;
  border-bottom: 1px solid var(--border);
  font-size: 0.8125rem;
}
.tp-kalem > .mono { font-family: var(--font-body); font-weight: 600; font-size: 0.875rem; font-variant-numeric: tabular-nums; }
.tp-sil {
  background: none; border: none; cursor: pointer;
  color: var(--muted); font-size: 1rem; line-height: 1; padding: 0.2rem 0.35rem;
}
.tp-sil:hover { color: var(--accent); }
.tp-eylem { margin-top: 1rem; }
.tp-genis { width: 100%; text-align: center; }
.tp-ikincil { display: flex; justify-content: space-between; gap: 1rem; margin-top: 0.6rem; }
.tp-baglanti {
  background: none; border: none; cursor: pointer; padding: 0;
  font-size: 0.75rem; color: var(--muted); text-decoration: underline;
  text-underline-offset: 3px; font-family: var(--font-body);
}
.tp-baglanti:hover { color: var(--accent); }
.tp-adetler { border-top: 1px solid var(--border); margin-bottom: 0.9rem; }
.tp-adet-satir {
  display: flex; align-items: center; justify-content: space-between; gap: 0.75rem;
  padding: 0.45rem 0.1rem; border-bottom: 1px solid var(--border); font-size: 0.8125rem;
}
.tp-adet-satir input {
  width: 90px; padding: 0.4rem 0.5rem; font: inherit;
  font-family: var(--font-mono); text-align: right;
  border: 1px solid var(--border); background: var(--bg);
}
.tp-adet-satir input:focus { outline: none; border-color: var(--accent); }
.tp-input {
  width: 100%; margin-top: 0.55rem; padding: 0.6rem 0.75rem;
  font: inherit; font-size: 0.875rem;
  border: 1px solid var(--border); background: var(--bg); color: var(--text);
  resize: vertical;
}
.tp-input:focus { outline: none; border-color: var(--accent); }
.tp-tuzak { position: absolute; left: -5000px; width: 1px; height: 1px; opacity: 0; }
.tp-kalem-sag { display: flex; align-items: center; gap: 0.35rem; }
.tp-kalem input[type="number"] {
  width: 84px; padding: 0.35rem 0.5rem; font: inherit;
  font-family: var(--font-mono); font-size: 0.8125rem; text-align: right;
  border: 1px solid var(--border); background: var(--bg); color: var(--text);
}
.tp-kalem input[type="number"]:focus { outline: none; border-color: var(--accent); }
.tp-kalem input.eksik { border-color: #9a3030; background: #faf0f0; }

/* ── BOŞ ARAMA SONUCU (listede olmayan ölçü de üretilir) ── */
.bos-sonuc {
  margin-top: 1rem;
  padding: 1.1rem 1.25rem;
  border: 1px dashed var(--border);
  background: var(--surface);
}
.bos-sonuc p { margin-bottom: 0.85rem; color: var(--text); }
.bos-sonuc .mono { color: var(--accent); }

/* ── SOMUN KAPAKLARI bölümü: sabit menünün altında kalmasın (#kapaklar atlaması) ── */
#kapaklar { scroll-margin-top: calc(var(--nav-h) + 1.5rem); }

/* ── ÖLÇÜ AÇIKLAMASI + TEKNİK KESİT (somunlu) ── */
.olcu-aciklama { display: flex; gap: 2rem; align-items: center; }
.olcu-aciklama p { max-width: 56ch; }
.olcu-aciklama img {
  width: 170px; flex-shrink: 0;
  border: 1px solid var(--border); background: #fff; padding: 0.4rem;
}
.tp-ipucu { font-size: 0.75rem; color: var(--muted); margin-top: 0.6rem; }
.tp-ipucu a { color: var(--accent); text-decoration: underline; }
.tp-tamam p { color: var(--text); }

.btn-liste {
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--border);
  padding: 0.4rem 0.6rem;
  font-size: 0.7188rem;
  font-family: var(--font-mono);
  cursor: pointer;
  white-space: nowrap;
}
.btn-liste:hover { color: var(--accent); border-color: var(--accent); }
.btn-liste.eklendi, .boy-cip.eklendi { background: var(--accent); color: #fff; border-color: var(--accent); }

/* Boy çipleri artık SEÇİCİ (tıkla → listeye) */
button.boy-cip { cursor: pointer; transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease); }
button.boy-cip:hover { border-color: var(--accent); color: var(--accent); }

.olcu-tablo .aile .cap { color: var(--muted); font-weight: 500; margin-right: 0.08em; }

/* side-label foto üstünde okunur kalsın */
.hero-visual .side-label { background: rgba(22, 24, 27, 0.8); color: #E8EAED; padding: 0.3rem 0.6rem; }

/* ── MOBILE (D7) ──────────────────────── */
@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; min-height: 0; }
  .hero-text { border-right: none; border-bottom: 1px solid var(--border); padding: 3.5rem var(--gutter) 2.5rem; }
  .hero-visual { min-height: 300px; }
  .olcu-duvari { columns: 2; }
  .specs-row { grid-template-columns: repeat(2, 1fr); }
  .spec-item:nth-child(2n) { border-right: none; }
  .spec-item { border-bottom: 1px solid var(--border); }
  .kapilar, .iletisim-grid { grid-template-columns: 1fr; }
  .uretim-grid { grid-template-columns: 1fr; }
  .nav-toggle { display: inline-flex; }
  .nav-links { display: none; }
  nav.acik .nav-links {
    display: flex; flex-direction: column; gap: 0; margin: 0;
    position: absolute; top: var(--nav-h); left: 0; right: 0;
    background: var(--surface); border-bottom: 1px solid var(--border);
    box-shadow: 0 14px 28px rgba(22, 24, 27, 0.12);
  }
  nav.acik .nav-links li + li { border-top: 1px solid var(--border); }
  nav.acik .nav-links a {
    display: block; padding: 1rem var(--gutter);
    font-size: 0.9375rem; letter-spacing: 0.02em; color: var(--text);
  }
  nav.acik .nav-links a.active { color: var(--accent); }
  .nav-logo { height: 42px; }
  .section { padding: 3.5rem 0; }
  .footer-inner { grid-template-columns: 1fr; }
  .ref-serit { grid-template-columns: repeat(4, 1fr); gap: 1rem; }
  .foto-serit { grid-template-columns: repeat(2, 1fr); }
  .teklif-panel { right: 0.5rem; left: 0.5rem; bottom: 0.5rem; width: auto; max-height: 78vh; }
  .olcu-aciklama { flex-direction: column; align-items: flex-start; gap: 1rem; }
}