/* =========================================================
   Ankara Su Jeti - AJ Ankara Jet
   Kurumsal / mühendislik kimlikli tasarım sistemi
   ========================================================= */

:root{
  --paper:#FFFFFF;
  --paper-2:#F5F4F1;
  --ink:#15181B;
  --ink-soft:#565D64;
  --ink-faint:#8A9096;
  --line:#E3E1DB;
  --line-strong:#C9C6BE;
  --red:#E30A17;
  --red-ink:#A80710;
  --green:#1F9254;
  --maxw:1220px;
  --font-head:'IBM Plex Sans', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-body: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-mono:'IBM Plex Mono', ui-monospace, 'SFMono-Regular', Menlo, Consolas, monospace;
}

*,*::before,*::after{box-sizing:border-box;}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:76px;}
body{
  margin:0;font-family:var(--font-body);color:var(--ink);background:var(--paper);
  line-height:1.6;-webkit-font-smoothing:antialiased;padding-bottom:62px;
}
@media (min-width:900px){ body{padding-bottom:0;} }
img{max-width:100%;display:block;height:auto;}
a{color:inherit;text-decoration:none;}
ul{list-style:none;margin:0;padding:0;}
h1,h2,h3,h4{
  font-family:var(--font-head);font-weight:700;line-height:1.16;
  letter-spacing:-0.01em;margin:0 0 .5em;color:var(--ink);
}
p{margin:0 0 1em;}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px;}
:focus-visible{outline:3px solid var(--red);outline-offset:2px;}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums;}

@media (prefers-reduced-motion: reduce){
  html{scroll-behavior:auto;}
  *,*::before,*::after{animation-duration:.001ms !important;transition-duration:.001ms !important;}
}

.brand-link{color:var(--red-ink);font-weight:600;border-bottom:1px solid rgba(168,7,16,.35);}
.brand-link:hover{border-bottom-color:var(--red-ink);}

.skip-link{position:absolute;left:-999px;top:0;background:var(--red);color:#fff;padding:10px 16px;z-index:200;font-weight:600;}
.skip-link:focus{left:12px;top:12px;}

/* =========================================================
   HEADER — açık, sade, kurumsal
   ========================================================= */
.site-header{position:sticky;top:0;z-index:100;background:var(--paper);border-bottom:1px solid var(--line);}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:12px 24px;max-width:var(--maxw);margin:0 auto;gap:14px;}
.brand{display:flex;align-items:center;gap:10px;min-width:0;}
.brand img{height:38px;width:auto;flex:none;}
.brand-text{display:flex;flex-direction:column;line-height:1.15;min-width:0;}
.brand-text strong{font-family:var(--font-head);color:var(--ink);font-size:16px;font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
.brand-text span{color:var(--ink-faint);font-size:11px;white-space:nowrap;}

.main-nav{display:none;}
.main-nav ul{display:flex;gap:6px;align-items:center;}
.main-nav a{color:var(--ink-soft);font-size:15px;font-weight:500;padding:10px 12px;display:block;border-bottom:2px solid transparent;}
.main-nav a:hover{color:var(--ink);}
.main-nav a[aria-current="page"]{color:var(--ink);font-weight:600;border-bottom-color:var(--red);}

.header-cta{display:none;align-items:center;gap:8px;}
.header-cta .btn{padding:9px 14px;font-size:14px;}

.nav-toggle{background:none;border:1px solid var(--line-strong);color:var(--ink);border-radius:2px;width:42px;height:38px;flex:none;display:flex;align-items:center;justify-content:center;}
.nav-toggle svg{width:20px;height:20px;}

.mobile-panel{display:none;flex-direction:column;background:var(--paper);border-top:1px solid var(--line);}
.mobile-panel.is-open{display:flex;}
.mobile-panel a{color:var(--ink);padding:14px 24px;border-bottom:1px solid var(--line);font-size:16px;font-weight:500;}
.mobile-panel .mp-cta{display:flex;gap:10px;padding:14px 24px;}

@media (min-width:900px){
  .main-nav{display:block;}
  .header-cta{display:flex;}
  .nav-toggle{display:none;}
  .mobile-panel{display:none !important;}
}

/* =========================================================
   BUTTONS
   ========================================================= */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  font-family:var(--font-body);font-weight:600;font-size:15px;
  padding:13px 22px;border-radius:2px;border:1px solid transparent;cursor:pointer;
  line-height:1.1;white-space:nowrap;
}
.btn svg{width:17px;height:17px;flex:none;}
.btn-red{background:var(--red);color:#fff;}
.btn-red:hover{background:var(--red-ink);}
.btn-whats{background:var(--green);color:#fff;}
.btn-whats:hover{background:#187a44;}
.btn-outline{background:transparent;color:var(--ink);border-color:var(--line-strong);}
.btn-outline:hover{border-color:var(--ink);}
.btn-outline-light{background:transparent;color:#fff;border-color:#4A5158;}
.btn-outline-light:hover{border-color:#fff;}
.btn-ink{background:var(--ink);color:#fff;}
.btn-ink:hover{background:#000;}
.btn-block{width:100%;}

.mobile-bar{position:fixed;left:0;right:0;bottom:0;z-index:150;display:flex;background:var(--ink);box-shadow:0 -6px 18px rgba(0,0,0,.15);}
.mobile-bar a{flex:1;display:flex;align-items:center;justify-content:center;gap:8px;padding:14px 8px;font-weight:700;font-size:14.5px;}
.mobile-bar svg{width:18px;height:18px;}
.mobile-bar .mb-call{background:var(--red);color:#fff;}
.mobile-bar .mb-whats{background:var(--green);color:#fff;}
@media (min-width:900px){ .mobile-bar{display:none;} }

/* =========================================================
   HERO
   ========================================================= */
.hero{background:var(--paper);border-bottom:1px solid var(--line);}
.hero-inner{max-width:var(--maxw);margin:0 auto;padding:56px 24px 44px;display:grid;grid-template-columns:1fr;gap:36px;}
@media (min-width:960px){ .hero-inner{grid-template-columns:1.15fr .85fr;align-items:center;gap:48px;} }
.hero-tag{color:var(--red-ink);font-weight:600;font-size:14px;margin-bottom:14px;}
.hero h1{font-size:clamp(30px,4.6vw,46px);max-width:17ch;margin-bottom:18px;}
.hero p.lead{color:var(--ink-soft);font-size:17px;max-width:56ch;margin-bottom:26px;}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;}
.hero-diagram{width:100%;}
.hero-diagram svg{width:100%;height:auto;}

/* Spec strip — koyu, tek satırlık veri şeridi */
.spec-strip{background:var(--ink);color:#fff;}
.spec-strip .container{display:grid;grid-template-columns:repeat(2,1fr);}
@media (min-width:720px){ .spec-strip .container{grid-template-columns:repeat(4,1fr);} }
.spec-strip .item{padding:20px 18px;border-right:1px solid #2A2E33;border-bottom:1px solid #2A2E33;}
@media (min-width:720px){ .spec-strip .item{border-bottom:none;} }
.spec-strip .item:nth-child(2n){border-right:none;}
@media (min-width:720px){ .spec-strip .item:nth-child(2n){border-right:1px solid #2A2E33;} .spec-strip .item:last-child{border-right:none;} }
.spec-strip .val{display:block;font-family:var(--font-mono);font-size:22px;font-weight:600;color:#fff;}
.spec-strip .lbl{color:#9EA4AA;font-size:12.5px;}

/* =========================================================
   SECTIONS
   ========================================================= */
section{padding:60px 0;}
.section-alt{background:var(--paper-2);}
.section-head{max-width:660px;margin-bottom:34px;}
.section-head h2{font-size:clamp(23px,3.6vw,30px);}
.section-head p{color:var(--ink-soft);font-size:16px;}

/* Services grid */
.svc-grid{display:grid;grid-template-columns:1fr;gap:20px;}
@media (min-width:640px){ .svc-grid{grid-template-columns:1fr 1fr;} }
@media (min-width:980px){ .svc-grid{grid-template-columns:repeat(3,1fr);} }

.svc-card{background:#fff;border:1px solid var(--line);display:flex;flex-direction:column;height:100%;transition:border-color .15s ease;}
.svc-card:hover{border-color:var(--ink);}
.svc-card .svc-media{aspect-ratio:4/3;overflow:hidden;border-bottom:1px solid var(--line);}
.svc-card .svc-media svg{width:100%;height:100%;display:block;}
.svc-card .svc-body{padding:18px 20px 20px;display:flex;flex-direction:column;flex:1;}
.svc-card h3{font-size:17.5px;margin-bottom:8px;}
.svc-card p{color:var(--ink-soft);font-size:14.5px;flex:1;margin-bottom:16px;}
.svc-card .svc-link{color:var(--ink);font-weight:600;font-size:13.5px;display:inline-flex;align-items:center;gap:6px;border-top:1px solid var(--line);padding-top:14px;}
.svc-card:hover .svc-link{color:var(--red-ink);}
.svc-card .svc-link svg{width:14px;height:14px;}

.svc-list-note{margin-top:34px;text-align:center;}

/* Uniform placeholder */
.ph-media{width:100%;height:100%;background:var(--paper-2);}

/* Feature / why-us list (definition list style, not numbered) */
.feat-list{display:grid;grid-template-columns:1fr;gap:0;border-top:1px solid var(--line);}
@media (min-width:760px){ .feat-list{grid-template-columns:1fr 1fr;} }
.feat{padding:26px 4px;border-bottom:1px solid var(--line);display:flex;gap:16px;}
@media (min-width:760px){
  .feat:nth-child(odd){border-right:1px solid var(--line);padding-right:28px;}
  .feat:nth-child(even){padding-left:28px;}
}
.feat .fi{flex:none;width:22px;height:22px;color:var(--red-ink);margin-top:3px;}
.feat h3{font-size:16.5px;margin-bottom:6px;}
.feat p{color:var(--ink-soft);font-size:14.5px;margin:0;}

/* CTA band */
.cta-band{background:var(--ink);color:#fff;padding:46px 0;}
.cta-band-inner{display:flex;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:22px;}
.cta-band h2{color:#fff;font-size:25px;margin-bottom:6px;max-width:28ch;}
.cta-band p{color:#B7BCC1;margin:0;}
.cta-actions{display:flex;flex-wrap:wrap;gap:12px;}

/* Breadcrumb */
.breadcrumb{background:var(--paper-2);border-bottom:1px solid var(--line);}
.breadcrumb ol{display:flex;flex-wrap:wrap;gap:6px;padding:12px 0;font-size:13px;color:var(--ink-soft);}
.breadcrumb a{color:var(--ink-soft);}
.breadcrumb a:hover{color:var(--red-ink);}
.breadcrumb li:not(:last-child)::after{content:"/";margin-left:6px;color:var(--line-strong);}
.breadcrumb li[aria-current]{color:var(--ink);font-weight:600;}

/* Service detail page */
.svc-hero{background:var(--paper);border-bottom:1px solid var(--line);}
.svc-hero-inner{max-width:var(--maxw);margin:0 auto;padding:42px 24px;display:grid;grid-template-columns:1fr;gap:30px;}
@media (min-width:900px){ .svc-hero-inner{grid-template-columns:1.2fr .8fr;align-items:center;} }
.svc-hero-tag{color:var(--red-ink);font-weight:600;font-size:13.5px;margin-bottom:12px;}
.svc-hero h1{font-size:clamp(25px,4vw,36px);margin-bottom:14px;}
.svc-hero .answer{color:var(--ink-soft);font-size:16.5px;max-width:60ch;}
.svc-hero-media{border:1px solid var(--line);aspect-ratio:4/3;overflow:hidden;}
.svc-hero-media svg{width:100%;height:100%;display:block;}
.svc-hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px;}

.prose{max-width:74ch;}
.prose h2{font-size:23px;margin-top:2.1em;}
.prose h2:first-child{margin-top:0;}
.prose p{color:var(--ink);font-size:16px;}

.chip-row{display:flex;flex-wrap:wrap;gap:10px;margin:18px 0 6px;}
.chip{background:var(--paper-2);border:1px solid var(--line);color:var(--ink-soft);font-family:var(--font-mono);font-size:12.5px;font-weight:500;padding:7px 12px;}

.check-list{display:grid;grid-template-columns:1fr;gap:10px;margin:16px 0 0;}
@media (min-width:640px){ .check-list{grid-template-columns:1fr 1fr;} }
.check-list li{display:flex;gap:10px;align-items:flex-start;font-size:15px;border:1px solid var(--line);padding:12px 14px;}
.check-list svg{flex:none;width:17px;height:17px;color:var(--red-ink);margin-top:2px;}

.steps{display:grid;grid-template-columns:1fr;gap:0;margin-top:10px;}
@media (min-width:760px){ .steps{grid-template-columns:repeat(4,1fr);} }
.step{border-top:2px solid var(--ink);padding:16px 16px 4px 0;}
.step .stepno{font-family:var(--font-mono);font-size:13px;color:var(--red-ink);display:block;margin-bottom:8px;}
.step h3{font-size:15.5px;margin-bottom:6px;}
.step p{color:var(--ink-soft);font-size:14px;margin:0;}

.faq{border-top:1px solid var(--line);margin-top:10px;}
.faq-item{border-bottom:1px solid var(--line);}
.faq-item summary{cursor:pointer;list-style:none;padding:18px 4px;font-weight:600;font-size:16px;display:flex;justify-content:space-between;align-items:center;gap:16px;color:var(--ink);}
.faq-item summary::-webkit-details-marker{display:none;}
.faq-item summary .q-icon{flex:none;width:22px;height:22px;border:1px solid var(--line-strong);display:flex;align-items:center;justify-content:center;color:var(--ink-soft);font-size:15px;font-family:var(--font-mono);}
.faq-item[open] summary .q-icon{background:var(--ink);color:#fff;border-color:var(--ink);}
.faq-item p{padding:0 4px 18px;color:var(--ink-soft);font-size:15px;margin:0;}

.related{margin-top:8px;}
.related-grid{display:grid;grid-template-columns:1fr;gap:14px;}
@media (min-width:640px){ .related-grid{grid-template-columns:repeat(3,1fr);} }
.related-card{border:1px solid var(--line);padding:16px 18px 15px;background:#fff;}
.related-card h3{font-size:15.5px;margin-bottom:8px;}
.related-card a{color:var(--red-ink);font-weight:600;font-size:13.5px;}

.svc-layout{display:grid;grid-template-columns:1fr;gap:44px;}
@media (min-width:980px){ .svc-layout{grid-template-columns:1fr 300px;} }
.side-card{background:var(--ink);color:#fff;padding:26px 22px;position:sticky;top:96px;}
.side-card h3{color:#fff;font-size:17.5px;margin-bottom:6px;}
.side-card p{color:#AEB4B9;font-size:14px;margin-bottom:18px;}
.side-card .btn{width:100%;margin-bottom:10px;}
.side-card .side-meta{border-top:1px solid #2A2E33;margin-top:16px;padding-top:16px;font-size:13.5px;color:#9EA4AA;}
.side-card .side-meta div{display:flex;justify-content:space-between;padding:6px 0;border-bottom:1px solid #2A2E33;font-family:var(--font-mono);}
.side-card .side-meta div:last-child{border-bottom:none;}
.side-card .side-meta strong{color:#fff;font-weight:600;}

/* About page */
.about-grid{display:grid;grid-template-columns:1fr;gap:36px;align-items:start;}
@media (min-width:900px){ .about-grid{grid-template-columns:1.1fr .9fr;} }
.spec-table{width:100%;border-collapse:collapse;margin-top:6px;font-family:var(--font-mono);}
.spec-table th,.spec-table td{text-align:left;padding:12px 0;border-bottom:1px solid #2A2E33;font-size:13.5px;}
.spec-table th{color:#9EA4AA;font-weight:500;width:46%;}
.spec-table td{color:#fff;font-weight:600;}

/* Contact page */
.contact-grid{display:grid;grid-template-columns:1fr;gap:32px;}
@media (min-width:900px){ .contact-grid{grid-template-columns:1fr 1fr;} }
.contact-card{background:var(--paper-2);border:1px solid var(--line);padding:26px;}
.contact-card h3{font-size:15.5px;margin-bottom:4px;}
.contact-card a,.contact-card address{color:var(--ink-soft);font-style:normal;font-size:15px;}
.contact-row{display:flex;gap:14px;padding:16px 0;border-bottom:1px solid var(--line);}
.contact-row:last-child{border-bottom:none;}
.contact-row .ic{flex:none;width:38px;height:38px;background:var(--ink);color:#fff;display:flex;align-items:center;justify-content:center;}
.contact-row .ic svg{width:18px;height:18px;}
.map-frame{border:1px solid var(--line);}
.map-frame iframe{width:100%;height:360px;border:0;display:block;}

/* Keyword-rich "about brand" block */
.brand-block{border-top:1px solid var(--line);padding-top:36px;}
.brand-block .prose p{color:var(--ink-soft);}
.brand-block .prose strong{color:var(--ink);}

/* =========================================================
   FOOTER
   ========================================================= */
.site-footer{background:var(--ink);color:#AEB4B9;padding:50px 0 0;}
.footer-grid{display:grid;grid-template-columns:1fr;gap:32px;padding-bottom:36px;border-bottom:1px solid #262A2F;}
@media (min-width:760px){ .footer-grid{grid-template-columns:1.3fr 1fr 1fr;} }
.footer-brand .logo-chip{display:inline-block;background:#fff;padding:6px 10px;margin-bottom:16px;}
.footer-brand .logo-chip img{height:28px;}
.footer-brand p{font-size:14px;max-width:40ch;}
.site-footer h4{color:#fff;font-size:14px;margin-bottom:14px;font-weight:600;}
.footer-links li{margin-bottom:9px;}
.footer-links a{font-size:14px;color:#AEB4B9;}
.footer-links a:hover{color:#fff;}
.footer-bottom{display:flex;flex-wrap:wrap;justify-content:space-between;gap:10px;padding:20px 0;font-size:12.5px;color:#6E747A;font-family:var(--font-mono);}

.text-center{text-align:center;}
.mt-0{margin-top:0;}