/* =========================================================
   Bayramsan / Bayram Boru — Kurumsal Stil Sistemi
   Klasik kurumsal: lacivert + beyaz + gri
   ========================================================= */

:root{
  --navy-900:#0e1a33;
  --navy-800:#152548;
  --navy-700:#1a2b4a;
  --navy-600:#22356a;
  --navy-500:#354c85;
  --ink-900:#0b1220;
  --ink-700:#2a3345;
  --ink-500:#5a6478;
  --ink-400:#8892a6;
  --ink-300:#c4ccd9;
  --ink-200:#e4e8ef;
  --ink-100:#f1f3f7;
  --ink-50:#f8f9fb;
  --white:#ffffff;
  --accent:#c89b3c;      /* ince, altın vurgu – sertifika/ödül hissi */
  --accent-dim:#a8822f;
  --danger:#a33a2a;
  --ok:#2f6f4e;

  --shadow-sm: 0 1px 2px rgba(14,26,51,.06), 0 1px 1px rgba(14,26,51,.04);
  --shadow-md: 0 6px 20px -8px rgba(14,26,51,.18), 0 2px 6px rgba(14,26,51,.06);
  --shadow-lg: 0 24px 48px -16px rgba(14,26,51,.25);

  --radius-sm: 2px;
  --radius-md: 4px;
  --radius-lg: 8px;

  --font-sans: "Inter", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --font-serif: "Playfair Display", "Times New Roman", serif;
  --font-mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;

  --container: 1240px;
  --container-wide: 1400px;
}

*,*::before,*::after{box-sizing:border-box}
html,body{margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-sans);
  color:var(--ink-900);
  background:var(--white);
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit;cursor:pointer;border:none;background:none}

/* ---------- TYPOGRAPHY ---------- */
h1,h2,h3,h4{
  font-family:var(--font-serif);
  font-weight:500;
  color:var(--navy-900);
  letter-spacing:-0.01em;
  line-height:1.15;
  margin:0;
  text-wrap:balance;
}
h1{font-size:clamp(2.5rem,5vw,4.25rem);letter-spacing:-0.02em}
h2{font-size:clamp(1.875rem,3.2vw,2.75rem)}
h3{font-size:clamp(1.25rem,1.8vw,1.5rem)}
h4{font-size:1.125rem;font-family:var(--font-sans);font-weight:600}

p{margin:0;text-wrap:pretty}

.eyebrow{
  font-family:var(--font-mono);
  font-size:.75rem;
  letter-spacing:.18em;
  text-transform:uppercase;
  color:var(--accent);
  font-weight:500;
}
.eyebrow--ink{color:var(--ink-500)}

.lead{font-size:1.125rem;color:var(--ink-700);line-height:1.65;max-width:62ch}

/* ---------- LAYOUT ---------- */
.container{max-width:var(--container);margin:0 auto;padding:0 32px}
.container--wide{max-width:var(--container-wide)}
.section{padding:clamp(64px,8vw,120px) 0}
.section--tight{padding:clamp(48px,6vw,80px) 0}
.section--dark{background:var(--navy-900);color:var(--ink-100)}
.section--dark h1,.section--dark h2,.section--dark h3{color:var(--white)}
.section--alt{background:var(--ink-50)}

.divider{height:1px;background:var(--ink-200);border:0}

.grid{display:grid;gap:24px}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}
@media(max-width:900px){
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
}

/* ---------- HEADER ---------- */
.topbar{
  background:var(--navy-900);
  color:var(--ink-200);
  font-size:.8125rem;
  line-height:1.2;
  border-bottom:1px solid rgba(255,255,255,.06);
}
.topbar__inner{
  display:flex;justify-content:space-between;align-items:center;
  padding:8px 32px;max-width:var(--container-wide);margin:0 auto;
  gap:24px;
  min-height:40px;
}
.topbar__contacts{display:flex;gap:22px;color:var(--ink-300);align-items:center}
.topbar__contacts > *{display:inline-flex;align-items:center;gap:7px;white-space:nowrap}
.topbar__contacts svg{width:14px;height:14px;flex-shrink:0}
.topbar__contacts a:hover{color:var(--white)}
.topbar__lang{display:flex;gap:2px;align-items:center}
.topbar__lang button{
  color:var(--ink-300);
  padding:4px 10px;font-size:.75rem;
  letter-spacing:.1em;font-weight:500;
  border-left:1px solid rgba(255,255,255,.08);
  display:inline-flex;align-items:center;gap:6px;
}
.topbar__lang .flag{
  font-size:.95rem;line-height:1;
  display:inline-block;
  filter:saturate(1.05);
}
.topbar__lang button:first-child{border-left:none}
.topbar__lang button.is-active{color:var(--accent)}
.topbar__lang button:hover{color:var(--white)}

.nav{
  background:var(--white);
  border-bottom:1px solid var(--ink-200);
  position:sticky;top:0;z-index:40;
}
.nav__inner{
  display:flex;justify-content:space-between;align-items:center;
  padding:18px 32px;max-width:var(--container-wide);margin:0 auto;
  gap:40px;
}
.brand{display:flex;align-items:center;gap:12px}
.brand__mark{
  width:44px;height:44px;
  background:var(--navy-800);
  color:var(--white);
  display:grid;place-items:center;
  font-family:var(--font-serif);
  font-size:1.375rem;font-weight:600;
  border-radius:var(--radius-sm);
  position:relative;
  letter-spacing:-0.02em;
}
.brand__mark::after{
  content:"";position:absolute;bottom:-2px;left:0;right:0;height:2px;
  background:var(--accent);
}
.brand__text{line-height:1.1}
.brand__name{font-family:var(--font-serif);font-size:1.125rem;font-weight:600;color:var(--navy-900);letter-spacing:-.01em}
.brand__sub{font-size:.6875rem;color:var(--ink-500);letter-spacing:.1em;text-transform:uppercase;margin-top:2px}

.nav__menu{display:flex;gap:4px;align-items:center}
.nav__link{
  padding:10px 16px;
  font-size:.9375rem;font-weight:500;
  color:var(--ink-700);
  position:relative;
  transition:color .2s;
}
.nav__link:hover{color:var(--navy-700)}
.nav__link.is-active{color:var(--navy-900)}
.nav__link.is-active::after{
  content:"";position:absolute;left:16px;right:16px;bottom:-19px;height:2px;background:var(--accent);
}

.nav__cta{
  background:var(--navy-800);color:var(--white);
  padding:12px 22px;border-radius:var(--radius-sm);
  font-size:.875rem;font-weight:500;letter-spacing:.02em;
  display:inline-flex;align-items:center;gap:8px;
  transition:background .2s;
}
.nav__cta:hover{background:var(--navy-700)}

/* ---------- BUTTONS ---------- */
.btn{
  display:inline-flex;align-items:center;gap:10px;
  padding:14px 26px;
  font-size:.9375rem;font-weight:500;
  border-radius:var(--radius-sm);
  transition:all .2s ease;
  cursor:pointer;
  letter-spacing:.01em;
}
.btn--primary{background:var(--navy-800);color:var(--white)}
.btn--primary:hover{background:var(--navy-700)}
.btn--ghost{background:transparent;color:var(--white);border:1px solid rgba(255,255,255,.4)}
.btn--ghost:hover{background:rgba(255,255,255,.08);border-color:var(--white)}
.btn--outline{background:transparent;color:var(--navy-800);border:1px solid var(--ink-300)}
.btn--outline:hover{border-color:var(--navy-800);background:var(--navy-800);color:var(--white)}
.btn--accent{background:var(--accent);color:var(--navy-900)}
.btn--accent:hover{background:var(--accent-dim);color:var(--white)}
.btn svg{width:16px;height:16px}

/* ---------- HERO ---------- */
.hero{
  position:relative;
  background:var(--navy-900);
  color:var(--white);
  overflow:hidden;
  min-height:640px;
  display:flex;align-items:center;
}
.hero__bg{
  position:absolute;inset:0;
  background:
    linear-gradient(120deg, rgba(14,26,51,.92) 0%, rgba(14,26,51,.72) 55%, rgba(14,26,51,.4) 100%),
    repeating-linear-gradient(90deg, #1a2b4a 0 2px, transparent 2px 40px),
    radial-gradient(ellipse at 70% 40%, #2a3f70 0%, #0e1a33 70%);
}
.hero__inner{
  position:relative;z-index:2;
  max-width:var(--container-wide);margin:0 auto;
  padding:80px 32px;
  display:grid;grid-template-columns:1.2fr 1fr;gap:64px;
  width:100%;
  align-items:center;
}
@media(max-width:1000px){.hero__inner{grid-template-columns:1fr}}
.hero__title{color:var(--white);margin:16px 0 24px}
.hero__lead{color:var(--ink-200);font-size:1.125rem;max-width:52ch;margin-bottom:40px}
.hero__cta{display:flex;gap:12px;flex-wrap:wrap}
.hero__visual{
  position:relative;
  aspect-ratio:4/5;
  background:
    linear-gradient(180deg, rgba(14,26,51,0) 0%, rgba(14,26,51,.4) 100%),
    repeating-linear-gradient(45deg, #1a2b4a 0 12px, #22356a 12px 24px);
  border:1px solid rgba(255,255,255,.08);
  display:flex;flex-direction:column;justify-content:flex-end;
  padding:32px;
}
.hero__visual::before{
  content:"ÜRETİM FOTOĞRAFI";
  position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);
  font-family:var(--font-mono);font-size:.75rem;letter-spacing:.2em;
  color:rgba(255,255,255,.35);
}
.hero__caption{
  border-top:1px solid rgba(255,255,255,.15);
  padding-top:16px;
  font-family:var(--font-mono);font-size:.75rem;letter-spacing:.15em;
  color:var(--ink-300);text-transform:uppercase;
}

/* ---------- STATS STRIP ---------- */
.stats{
  background:var(--white);
  border-top:1px solid var(--ink-200);
  border-bottom:1px solid var(--ink-200);
}
.stats__grid{
  display:grid;grid-template-columns:repeat(4,1fr);
  max-width:var(--container-wide);margin:0 auto;
}
.stat{
  padding:40px 32px;
  border-right:1px solid var(--ink-200);
}
.stat:last-child{border-right:none}
.stat__num{
  font-family:var(--font-serif);
  font-size:2.75rem;font-weight:500;
  color:var(--navy-900);
  line-height:1;
  display:flex;align-items:baseline;gap:4px;
}
.stat__unit{font-size:1rem;color:var(--accent);font-family:var(--font-sans);font-weight:500}
.stat__label{
  margin-top:8px;
  font-size:.8125rem;color:var(--ink-500);
  text-transform:uppercase;letter-spacing:.1em;
}
@media(max-width:900px){
  .stats__grid{grid-template-columns:repeat(2,1fr)}
  .stat{border-right:none;border-bottom:1px solid var(--ink-200)}
  .stat:nth-child(even){border-right:none}
  .stat:nth-child(odd){border-right:1px solid var(--ink-200)}
}

/* ---------- SECTION HEADINGS ---------- */
.sh{margin-bottom:56px;max-width:720px}
.sh__title{margin-top:12px}
.sh--center{margin-left:auto;margin-right:auto;text-align:center}

/* ---------- PRODUCT CARD ---------- */
.product-card{
  background:var(--white);
  border:1px solid var(--ink-200);
  transition:all .25s ease;
  display:flex;flex-direction:column;
  position:relative;
}
.product-card:hover{
  border-color:var(--navy-700);
  transform:translateY(-2px);
  box-shadow:var(--shadow-md);
}
.product-card__img{
  aspect-ratio:4/3;
  background:
    repeating-linear-gradient(135deg, var(--ink-100) 0 14px, var(--ink-200) 14px 28px);
  position:relative;
  overflow:hidden;
  display:grid;place-items:center;
}
.product-card__img::after{
  content:attr(data-placeholder);
  font-family:var(--font-mono);font-size:.75rem;letter-spacing:.15em;
  color:var(--ink-500);text-transform:uppercase;
}
.product-card__body{padding:24px 24px 28px;flex:1;display:flex;flex-direction:column}
.product-card__cat{
  font-family:var(--font-mono);font-size:.6875rem;letter-spacing:.2em;
  color:var(--accent);text-transform:uppercase;
}
.product-card__title{
  font-family:var(--font-serif);font-size:1.25rem;font-weight:500;
  color:var(--navy-900);margin:8px 0 12px;
}
.product-card__desc{color:var(--ink-700);font-size:.9375rem;line-height:1.55;flex:1}
.product-card__more{
  display:inline-flex;align-items:center;gap:8px;
  margin-top:20px;padding-top:16px;
  border-top:1px solid var(--ink-200);
  color:var(--navy-800);font-size:.875rem;font-weight:500;
}
.product-card__more svg{width:14px;height:14px;transition:transform .2s}
.product-card:hover .product-card__more svg{transform:translateX(4px)}

/* ---------- FEATURE ROW ---------- */
.feature{display:flex;gap:20px;align-items:flex-start}
.feature__icon{
  flex-shrink:0;width:44px;height:44px;
  background:var(--navy-800);color:var(--white);
  display:grid;place-items:center;
  border-radius:var(--radius-sm);
  font-family:var(--font-serif);font-size:1.125rem;
}
.feature__icon svg{width:20px;height:20px;stroke:currentColor;fill:none;stroke-width:1.5}
.feature__title{font-size:1.0625rem;font-weight:600;color:var(--navy-900);margin-bottom:6px}
.feature__desc{color:var(--ink-700);font-size:.9375rem;line-height:1.55}

/* ---------- QUOTE / CALLOUT ---------- */
.callout{
  background:var(--navy-900);
  color:var(--white);
  padding:clamp(48px,6vw,80px);
  display:grid;grid-template-columns:1fr auto;gap:48px;align-items:center;
  position:relative;overflow:hidden;
}
.callout::before{
  content:"";position:absolute;inset:0;
  background:repeating-linear-gradient(90deg, transparent 0 60px, rgba(255,255,255,.03) 60px 61px);
  pointer-events:none;
}
@media(max-width:800px){.callout{grid-template-columns:1fr}}
.callout h2{color:var(--white);position:relative}
.callout__body{position:relative;z-index:1}
.callout__cta{position:relative;z-index:1}

/* ---------- FOOTER ---------- */
.footer{
  background:var(--navy-900);
  color:var(--ink-300);
  padding:72px 0 0;
  font-size:.9375rem;
}
.footer__grid{
  display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:48px;
  padding-bottom:56px;
  border-bottom:1px solid rgba(255,255,255,.1);
}
@media(max-width:900px){.footer__grid{grid-template-columns:1fr 1fr}}
.footer h4{color:var(--white);font-size:.8125rem;text-transform:uppercase;letter-spacing:.15em;margin-bottom:20px;font-family:var(--font-sans);font-weight:600}
.footer__links{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:10px}
.footer__links a{color:var(--ink-300);transition:color .2s}
.footer__links a:hover{color:var(--white)}
.footer__brand-text{color:var(--ink-300);margin-top:20px;max-width:34ch;line-height:1.6}
.footer__bottom{
  max-width:var(--container-wide);margin:0 auto;padding:24px 32px;
  display:flex;justify-content:space-between;font-size:.8125rem;color:var(--ink-400);
  flex-wrap:wrap;gap:16px;
}
.footer__bottom a:hover{color:var(--white)}

/* ---------- PAGE HEADER (inner pages) ---------- */
.pageheader{
  background:var(--navy-900);color:var(--white);
  padding:80px 0 72px;
  position:relative;overflow:hidden;
}
.pageheader::before{
  content:"";position:absolute;inset:0;
  background:
    repeating-linear-gradient(90deg, transparent 0 80px, rgba(255,255,255,.04) 80px 81px),
    radial-gradient(circle at 85% 30%, rgba(200,155,60,.1), transparent 50%);
  pointer-events:none;
}
.pageheader__inner{position:relative;z-index:1;max-width:var(--container);margin:0 auto;padding:0 32px}
.pageheader h1{color:var(--white);max-width:20ch}
.pageheader .lead{color:var(--ink-200);margin-top:20px;max-width:60ch}
.breadcrumb{
  font-family:var(--font-mono);font-size:.75rem;letter-spacing:.15em;
  color:var(--ink-300);text-transform:uppercase;
  display:flex;gap:10px;margin-bottom:24px;
}
.breadcrumb a:hover{color:var(--white)}
.breadcrumb span{color:var(--ink-400)}

/* ---------- TABLE ---------- */
.spec-table{
  width:100%;border-collapse:collapse;
  font-size:.9375rem;
}
.spec-table th,.spec-table td{
  padding:14px 16px;text-align:left;
  border-bottom:1px solid var(--ink-200);
}
.spec-table thead th{
  background:var(--ink-50);
  font-weight:600;color:var(--navy-900);
  font-size:.8125rem;text-transform:uppercase;letter-spacing:.1em;
}
.spec-table tbody tr:hover{background:var(--ink-50)}

/* ---------- FORMS ---------- */
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
@media(max-width:700px){.form-grid{grid-template-columns:1fr}}
.field{display:flex;flex-direction:column;gap:8px}
.field--full{grid-column:1/-1}
.field label{
  font-size:.75rem;text-transform:uppercase;letter-spacing:.12em;
  color:var(--ink-500);font-weight:600;
}
.field input,.field select,.field textarea{
  font-family:inherit;font-size:1rem;
  padding:14px 16px;
  background:var(--white);
  border:1px solid var(--ink-300);
  border-radius:var(--radius-sm);
  color:var(--ink-900);
  transition:border-color .2s;
}
.field input:focus,.field select:focus,.field textarea:focus{
  outline:none;border-color:var(--navy-700);
  box-shadow:0 0 0 3px rgba(26,43,74,.1);
}
.field textarea{resize:vertical;min-height:120px}

/* ---------- UTILITIES ---------- */
.text-center{text-align:center}
.muted{color:var(--ink-500)}
.mt-sm{margin-top:16px}
.mt-md{margin-top:32px}
.mt-lg{margin-top:56px}
.mb-sm{margin-bottom:16px}
.mb-md{margin-bottom:32px}
.stack{display:flex;flex-direction:column;gap:16px}
.flex{display:flex;gap:16px;align-items:center}
.flex-between{display:flex;justify-content:space-between;align-items:center;gap:16px}

/* RTL support for Arabic */
[dir="rtl"] .nav__link.is-active::after{left:auto;right:16px}
[dir="rtl"] .brand__mark::after{left:auto;right:0}

/* Print-hide when nothing */
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* ---------- IMAGE FILL HELPERS ---------- */
/* Apply .filled to placeholder elements to suppress pseudo labels and inline span placeholders,
   then set background-image via inline style. */
.filled{background-size:cover!important;background-position:center!important;background-repeat:no-repeat!important}
.filled::before,.filled::after{display:none!important}
.filled > span{display:none!important}

/* Hero background with real photo + dark gradient overlay (legibility) */
.hero__bg.hero__bg--photo{
  background:
    linear-gradient(120deg, rgba(14,26,51,.94) 0%, rgba(14,26,51,.72) 45%, rgba(14,26,51,.32) 100%),
    url('img/hero.jpg') center/cover no-repeat;
}

/* Product card images: ensure image fills */
.product-card__img.filled{background-image:var(--p,none)}