/* Karotmak — beton grisi + elmas testere turuncusu. Düzen: koyu çelik hero, açık beton gövde, ince ızgara. */
:root{
  --bg:#EDEBE7; --surface:#F8F7F4; --ink:#1C232A; --muted:#58626C; --line:#D2CDC5;
  --accent:#D9480F; --accent-ink:#FFFFFF; --accent-soft:#F6DED2;
  --steel:#1F2A33; --steel-ink:#E9E6E1; --steel-muted:#A7B0B8; --steel-line:#33414D;
  --f-display:"Barlow Condensed","Arial Narrow",Impact,sans-serif;
  --f-body:"Barlow",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --f-mono:"JetBrains Mono",ui-monospace,"SFMono-Regular",Menlo,monospace;
  --radius:4px; --max:1180px;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){:root:not([data-theme="light"]){
  --bg:#14191E; --surface:#1B2228; --ink:#E7E4DF; --muted:#9AA4AD; --line:#2C353D;
  --accent:#F2672A; --accent-ink:#14191E; --accent-soft:#3A2419;
  --steel:#0E1317; --steel-ink:#E7E4DF; --steel-muted:#97A1AA; --steel-line:#26313A; color-scheme:dark}}
:root[data-theme="dark"]{
  --bg:#14191E; --surface:#1B2228; --ink:#E7E4DF; --muted:#9AA4AD; --line:#2C353D;
  --accent:#F2672A; --accent-ink:#14191E; --accent-soft:#3A2419;
  --steel:#0E1317; --steel-ink:#E7E4DF; --steel-muted:#97A1AA; --steel-line:#26313A; color-scheme:dark}

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font:400 17px/1.6 var(--f-body);overflow-x:hidden}
body::before{content:"";position:fixed;inset:0 0 auto;height:env(safe-area-inset-top,0px);z-index:60;background:var(--steel)}
img,svg{max-width:100%}
a{color:inherit}
h1,h2,h3{font-family:var(--f-display);font-weight:700;line-height:1.05;letter-spacing:.005em;text-wrap:balance;margin:0}
p{margin:0}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
.wrap{max-width:var(--max);margin:0 auto;padding-left:max(16px,env(safe-area-inset-left,0px));padding-right:max(16px,env(safe-area-inset-right,0px))}
.eyebrow{font:500 12px/1 var(--f-mono);letter-spacing:.14em;text-transform:uppercase;color:var(--accent)}
.center{text-align:center}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5em;min-height:48px;padding:0 22px;border-radius:var(--radius);
  font:600 15px/1 var(--f-body);letter-spacing:.02em;text-decoration:none;border:2px solid transparent;cursor:pointer;transition:background .15s,color .15s,border-color .15s;white-space:nowrap}
.btn svg{width:20px;height:20px;flex:none}
.btn-accent{background:var(--accent);color:var(--accent-ink)}
.btn-accent:hover{filter:brightness(1.08)}
.btn-ghost{border-color:currentColor;color:inherit}
.btn-ghost:hover{background:color-mix(in srgb,currentColor 12%,transparent)}
.btn-line{border-color:var(--ink);color:var(--ink)}
.btn-line:hover{background:var(--ink);color:var(--bg)}
.btn-block{width:100%}

/* top bar + header */
.topbar{background:var(--steel);color:var(--steel-muted);font:500 12.5px/1 var(--f-mono)}
.topbar-in{display:flex;justify-content:space-between;gap:16px;padding-block:9px}
.topbar a{text-decoration:none;color:var(--steel-ink)}
.topbar a:hover{color:var(--accent)}
.topbar-tel{display:flex;gap:20px}
.site-header{position:sticky;top:env(safe-area-inset-top,0px);z-index:50;background:var(--surface);border-bottom:1px solid var(--line)}
.header-in{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:72px}
.logo{display:inline-flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font:700 26px/1 var(--f-display);letter-spacing:.04em}
.logo b{color:var(--accent);font-weight:700}
.logo-mark{width:34px;height:34px;color:var(--accent)}
.site-nav{display:flex;align-items:center;gap:24px}
.site-nav ul{display:flex;gap:4px;list-style:none;margin:0;padding:0}
.site-nav ul a{display:block;padding:10px 12px;text-decoration:none;font-weight:600;font-size:15px;color:var(--muted);border-bottom:2px solid transparent}
.site-nav ul a:hover{color:var(--ink)}
.site-nav ul a[aria-current="page"]{color:var(--ink);border-bottom-color:var(--accent)}
.menu-btn{display:none;background:none;border:0;padding:10px;cursor:pointer;color:var(--ink)}
.menu-btn span{display:block;width:24px;height:2px;background:currentColor;margin:5px 0;transition:transform .2s,opacity .2s}
.menu-btn em{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
.menu-btn[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.menu-btn[aria-expanded="true"] span:nth-child(2){opacity:0}
.menu-btn[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* hero */
.hero{background:var(--steel);color:var(--steel-ink);overflow:hidden}
.hero-in{display:grid;grid-template-columns:1.15fr .85fr;gap:48px;align-items:center;padding-block:72px 80px}
.hero h1{font-size:clamp(42px,6.4vw,80px);text-transform:uppercase;margin:18px 0 20px}
.hero-lead{color:var(--steel-muted);font-size:18.5px;max-width:52ch}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.spec-chips{display:flex;flex-wrap:wrap;gap:10px 28px;list-style:none;margin:36px 0 0;padding:20px 0 0;border-top:1px solid var(--steel-line);font:500 13px/1.4 var(--f-mono);color:var(--steel-muted)}
.spec-chips b{display:block;font:700 24px/1.1 var(--f-display);color:var(--steel-ink);letter-spacing:.02em}
.hero-art{min-width:0}
.core-svg{display:block;width:100%;height:auto}
.core-svg .slab{fill:#5A6168}
.core-svg .agg{fill:#737A80}
.core-svg .rebar{stroke:#3B4248;stroke-width:7}
.core-svg .kerf{fill:#4A5157}
.core-svg .hole{fill:var(--steel)}
.core-svg .ring{fill:none;stroke:var(--accent);stroke-width:5;stroke-dasharray:100;stroke-dashoffset:0;transform-origin:200px 200px;animation:drill 1.6s cubic-bezier(.4,.1,.2,1) .2s both}
.core-svg .dim line{stroke:var(--steel-ink);stroke-width:1.5}
.core-svg .dim text{fill:var(--steel-ink);font:500 15px var(--f-mono)}
@keyframes drill{from{stroke-dashoffset:100;transform:rotate(-90deg)}to{stroke-dashoffset:0;transform:rotate(270deg)}}

/* sections */
.section{padding-block:88px}
.section-alt{background:var(--surface);border-block:1px solid var(--line)}
.sec-head{max-width:720px;margin:0 auto 44px;text-align:center;display:grid;gap:14px}
.sec-head.left{text-align:left;margin:0;align-content:start;justify-items:start}
.sec-head h2{font-size:clamp(32px,4.2vw,50px)}
.sec-head p:not(.eyebrow){color:var(--muted)}
.split{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:start}

/* service cards */
.svc-grid{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--line);border-left:1px solid var(--line)}
.svc-card{display:grid;gap:12px;align-content:start;padding:32px 28px;border-right:1px solid var(--line);border-bottom:1px solid var(--line);text-decoration:none;background:var(--surface);transition:background .15s}
.svc-card:hover{background:var(--accent-soft)}
.svc-card h3{font-size:27px}
.svc-card p{color:var(--muted);font-size:16px}
.svc-icon{display:inline-flex;width:52px;height:52px;color:var(--accent)}
.svc-icon svg{width:100%;height:100%;fill:none;stroke:currentColor;stroke-width:2.2;stroke-linecap:round;stroke-linejoin:round}
.more{font:500 13px/1 var(--f-mono);letter-spacing:.06em;text-transform:uppercase;color:var(--accent);text-decoration:none;margin-top:6px}
.more i{font-style:normal;display:inline-block;transition:transform .15s}
.svc-card:hover .more i,.more:hover i{transform:translateX(4px)}

/* steps */
.steps{list-style:none;margin:0;padding:0;counter-reset:s;display:grid;gap:0}
.steps li{counter-increment:s;display:grid;grid-template-columns:64px 1fr;column-gap:20px;padding:22px 0;border-bottom:1px solid var(--line)}
.steps li:first-child{border-top:1px solid var(--line)}
.steps li::before{content:counter(s,decimal-leading-zero);grid-row:span 2;font:700 40px/1 var(--f-display);color:var(--accent)}
.steps h3{font-size:24px;margin-bottom:4px}
.steps p{color:var(--muted)}

/* tables */
.table-wrap{overflow-x:auto;min-width:0}
table{width:100%;border-collapse:collapse;font-variant-numeric:tabular-nums}
.compare th,.compare td{padding:14px 16px;border-bottom:1px solid var(--line);text-align:left}
.compare thead th{font:500 12px/1 var(--f-mono);letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.compare thead th:nth-child(2){color:var(--accent)}
.compare tbody th{font-weight:600}
.compare td:nth-child(2){font-weight:600}
.compare td:nth-child(3){color:var(--muted)}

/* districts */
.district-cloud{display:flex;flex-wrap:wrap;justify-content:center;gap:8px;list-style:none;padding:0;margin:0 0 36px}
.district-cloud li{padding:8px 14px;border:1px solid var(--line);border-radius:999px;background:var(--bg);font-weight:500;font-size:15px}
.district-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:12px;list-style:none;margin:0;padding:0}
.district-grid a{display:grid;gap:4px;padding:18px 20px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);text-decoration:none;transition:border-color .15s}
.district-grid a:hover{border-color:var(--accent)}
.district-grid b{font:700 22px/1.1 var(--f-display)}
.district-grid span{font:500 12px/1.3 var(--f-mono);color:var(--muted);text-transform:uppercase;letter-spacing:.06em}
.note{margin-top:28px;color:var(--muted);max-width:70ch}

/* page hero */
.page-hero{background:var(--steel);color:var(--steel-ink);padding-block:52px 56px}
.page-hero h1{font-size:clamp(40px,6vw,68px);text-transform:uppercase;margin:16px 0 10px}
.page-hero p{color:var(--steel-muted);font-size:18px;max-width:60ch}
.crumbs{font:500 12.5px/1.4 var(--f-mono);color:var(--steel-muted);display:flex;flex-wrap:wrap;gap:8px}
.crumbs a{color:var(--steel-muted);text-decoration:none}
.crumbs a:hover{color:var(--accent)}
.crumbs span{color:var(--steel-ink)}
.crumbs i{font-style:normal;opacity:.5}

/* prose */
.prose{min-width:0;display:grid;gap:18px;max-width:72ch}
.prose h2{font-size:34px;margin-top:22px}
.prose .lead{font-size:20px;line-height:1.55}
.prose-grid{display:grid;grid-template-columns:7fr 5fr;gap:56px;align-items:start}
.values{display:grid;gap:16px}
.values div{padding:26px;background:var(--surface);border:1px solid var(--line);border-top:4px solid var(--accent);border-radius:var(--radius)}
.values h3{font-size:26px;margin-bottom:8px}
.values p{color:var(--muted)}
.principles{display:grid;grid-template-columns:repeat(4,1fr);gap:32px}
.principles h3{font-size:24px;margin-bottom:8px;padding-top:14px;border-top:2px solid var(--ink)}
.principles p{color:var(--muted)}

/* service list */
.svc-list{display:grid}
.svc-row{display:grid;grid-template-columns:72px 1fr;gap:24px;padding:36px 0;border-bottom:1px solid var(--line)}
.svc-row:first-child{padding-top:0}
.svc-row .svc-icon{width:64px;height:64px}
.svc-row h2{font-size:34px;margin-bottom:10px}
.svc-row h2 a{text-decoration:none}
.svc-row h2 a:hover{color:var(--accent)}
.svc-row p{color:var(--muted);max-width:75ch;margin-bottom:14px}
.svc-row > div{min-width:0}

/* detail */
.detail{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:56px;align-items:start}
.checks{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:1fr 1fr;gap:10px 24px}
.checks li{position:relative;padding-left:28px}
.checks li::before{content:"";position:absolute;left:0;top:.45em;width:14px;height:14px;border:2px solid var(--accent);border-radius:50%;box-shadow:inset 0 0 0 3px var(--bg),inset 0 0 0 7px var(--accent)}
.specs{border-top:2px solid var(--ink)}
.specs th,.specs td{padding:14px 0;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
.specs th{font:500 12.5px/1.6 var(--f-mono);letter-spacing:.06em;text-transform:uppercase;color:var(--muted);width:38%;padding-right:16px}
.specs td{font-weight:600}
.faq{display:grid;border-top:1px solid var(--line)}
.faq details{border-bottom:1px solid var(--line)}
.faq summary{cursor:pointer;list-style:none;padding:18px 36px 18px 0;font-weight:600;position:relative}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";position:absolute;right:4px;top:12px;font:700 26px/1 var(--f-display);color:var(--accent);transition:transform .2s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq details p{padding:0 0 20px;color:var(--muted)}
.side{display:grid;gap:16px;position:sticky;top:calc(env(safe-area-inset-top,0px) + 96px)}
.side-box{padding:24px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);display:grid;gap:12px}
.side-box h3{font-size:22px}
.side-nav{list-style:none;margin:0;padding:0;display:grid}
.side-nav a{display:block;padding:10px 0;border-bottom:1px solid var(--line);text-decoration:none;color:var(--muted);font-weight:500}
.side-nav li:last-child a{border-bottom:0}
.side-nav a:hover,.side-nav a[aria-current="page"]{color:var(--accent)}
.side-cta p{color:var(--muted);font-size:15px}

/* contact */
.contact{display:grid;grid-template-columns:5fr 7fr;gap:56px;align-items:start}
.contact-info{display:grid;gap:0;border-top:2px solid var(--ink)}
.info-item{padding:18px 0;border-bottom:1px solid var(--line);display:grid;gap:4px}
.info-item h3{font:500 12px/1 var(--f-mono);letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.info-item a,.info-item p{font:700 24px/1.2 var(--f-display);text-decoration:none;overflow-wrap:anywhere}
.info-item a:hover{color:var(--accent)}
.map{width:100%;aspect-ratio:4/3;border:0;margin-top:20px;border-radius:var(--radius)}
.map-link{margin-top:20px;font:500 13px/1 var(--f-mono);text-transform:uppercase;letter-spacing:.06em;color:var(--accent);text-decoration:none}
.quote-form{display:grid;gap:16px;padding:32px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);min-width:0}
.quote-form h2{font-size:34px}
.field{display:grid;gap:6px;min-width:0}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.field label{font:500 12px/1 var(--f-mono);letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.field input,.field select,.field textarea{width:100%;font:inherit;font-size:16px;color:var(--ink);background:var(--bg);border:1px solid var(--line);border-radius:var(--radius);padding:12px 14px;min-height:48px}
.field textarea{resize:vertical}
.field input:focus,.field select:focus,.field textarea:focus{outline:2px solid var(--accent);outline-offset:0;border-color:var(--accent)}
.form-err{color:var(--accent);font-weight:600}
.form-hint{font-size:14px;color:var(--muted)}

/* cta + footer */
.cta-band{background:var(--accent);color:var(--accent-ink)}
.cta-in{display:grid;grid-template-columns:1fr auto;gap:32px;align-items:center;padding-block:48px}
.cta-band h2{font-size:clamp(28px,3.4vw,40px)}
.cta-band p{opacity:.85;margin-top:8px}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px}
.cta-band .btn-accent{background:var(--steel);color:var(--steel-ink)}
.site-footer{background:var(--steel);color:var(--steel-muted);font-size:15px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-block:64px 48px}
.site-footer .logo{color:var(--steel-ink)}
.f-brand p{margin-top:16px;max-width:36ch}
.site-footer h3{font:500 12px/1 var(--f-mono);letter-spacing:.12em;text-transform:uppercase;color:var(--steel-ink);margin-bottom:16px}
.site-footer ul{list-style:none;margin:0;padding:0;display:grid;gap:8px}
.site-footer a{text-decoration:none}
.site-footer a:hover{color:var(--accent)}
.f-contact li{overflow-wrap:anywhere}
.footer-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:12px;padding-block:20px;border-top:1px solid var(--steel-line);font:500 12.5px/1.4 var(--f-mono)}

/* whatsapp + mobile bar */
.wa-float{position:fixed;right:calc(20px + env(safe-area-inset-right,0px));bottom:calc(20px + env(safe-area-inset-bottom,0px));z-index:40;width:58px;height:58px;border-radius:50%;
  background:#1FA855;color:#fff;display:grid;place-items:center;box-shadow:0 6px 20px rgba(0,0,0,.25)}
.wa-float svg{width:30px;height:30px}
.mobile-bar{display:none}

/* responsive */
@media (max-width:980px){
  .hero-in{grid-template-columns:1fr;padding-block:48px 56px;gap:36px}
  .hero-art{max-width:340px}
  .svc-grid{grid-template-columns:1fr 1fr}
  .split,.prose-grid,.contact,.detail{grid-template-columns:1fr;gap:40px}
  .side{position:static}
  .principles{grid-template-columns:1fr 1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .cta-in{grid-template-columns:1fr}
}
@media (max-width:860px){
  .menu-btn{display:block}
  .site-nav{position:absolute;left:0;right:0;top:100%;flex-direction:column;align-items:stretch;gap:0;background:var(--surface);border-bottom:1px solid var(--line);
    padding:8px max(16px,env(safe-area-inset-right,0px)) 20px max(16px,env(safe-area-inset-left,0px));display:none;box-shadow:0 12px 24px rgba(0,0,0,.12)}
  .site-nav.open{display:flex}
  .site-nav ul{flex-direction:column}
  .site-nav ul a{padding:14px 4px;font-size:18px;border-bottom:1px solid var(--line)}
  .site-nav ul a[aria-current="page"]{border-bottom-color:var(--line);color:var(--accent)}
  .nav-cta{margin-top:16px}
  .topbar-note{display:none}
  .topbar-in{justify-content:center}
}
@media (max-width:620px){
  body{font-size:16px;padding-bottom:calc(64px + env(safe-area-inset-bottom,0px))}
  .section{padding-block:60px}
  .svc-grid{grid-template-columns:1fr}
  .svc-card{padding:26px 20px}
  .checks,.field-row,.principles{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr;gap:32px}
  .svc-row{grid-template-columns:1fr;gap:12px}
  .svc-row .svc-icon{width:48px;height:48px}
  .quote-form{padding:24px 18px}
  .topbar-tel{gap:14px;font-size:11.5px}
  .hero-actions .btn,.cta-actions .btn{flex:1 1 100%}
  .wa-float{display:none}
  .mobile-bar{display:grid;grid-template-columns:1fr 1fr;position:fixed;left:0;right:0;bottom:0;z-index:45;
    padding:0 env(safe-area-inset-right,0px) env(safe-area-inset-bottom,0px) env(safe-area-inset-left,0px);background:var(--steel)}
  .mobile-bar a{display:flex;align-items:center;justify-content:center;gap:8px;min-height:60px;color:var(--steel-ink);text-decoration:none;font-weight:600}
  .mobile-bar a.wa{background:#1FA855;color:#fff}
  .mobile-bar svg{width:22px;height:22px}
}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}html{scroll-behavior:auto}}