/* ==========================================================================
   İşcan Mimarlık — Kurumsal Web Sitesi
   ========================================================================== */

:root{
  --ink:#15181c;
  --ink-soft:#3a3f45;
  --paper:#f7f4ee;
  --paper-alt:#efe9df;
  --white:#ffffff;
  --accent:#a83e28;
  --accent-dark:#7e2c1a;
  --accent-soft:#f1e0d8;
  --gold:#b8933f;
  --line:#e2dcd0;
  --gray:#6b6f76;
  --shadow:0 20px 50px -25px rgba(21,24,28,.35);
  --radius:2px;
  --maxw:1240px;
  --serif:"Fraunces","Georgia",serif;
  --sans:"Inter","Segoe UI",sans-serif;
}

*,*::before,*::after{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:var(--sans);
  color:var(--ink);
  background:var(--paper);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
ul{margin:0;padding:0;list-style:none;}
h1,h2,h3,h4{
  font-family:var(--serif);
  font-weight:600;
  line-height:1.15;
  margin:0 0 .5em;
  letter-spacing:-.01em;
}
p{margin:0 0 1em;}
.container{max-width:var(--maxw);margin:0 auto;padding:0 28px;}
section{position:relative;}

/* ---------- Utility ---------- */
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;
  font:600 12px/1 var(--sans);
  letter-spacing:.22em;text-transform:uppercase;
  color:var(--accent);margin-bottom:18px;
}
.eyebrow::before{content:"";width:28px;height:1px;background:var(--accent);}
.lead{font-size:1.15rem;color:var(--ink-soft);max-width:640px;}
.center{text-align:center;margin-left:auto;margin-right:auto;}
.mt-0{margin-top:0;}
.section-head{max-width:720px;margin-bottom:56px;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}
.section-pad{padding:110px 0;}
@media (max-width:768px){.section-pad{padding:70px 0;}}
.bg-alt{background:var(--paper-alt);}
.bg-ink{background:var(--ink);color:#f2efe9;}
.bg-ink .eyebrow{color:var(--gold);}
.bg-ink .eyebrow::before{background:var(--gold);}
.bg-ink h2,.bg-ink h3{color:#fff;}
.reveal{opacity:0;transform:translateY(24px);transition:opacity .7s ease,transform .7s ease;}
.reveal.is-visible{opacity:1;transform:translateY(0);}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:10px;
  padding:15px 30px;
  font:600 13px/1 var(--sans);letter-spacing:.08em;text-transform:uppercase;
  border:1px solid var(--ink);color:var(--ink);
  background:transparent;cursor:pointer;
  transition:background .25s ease,color .25s ease,border-color .25s ease,transform .2s ease;
  white-space:nowrap;
}
.btn:hover{background:var(--ink);color:#fff;transform:translateY(-2px);}
.btn-primary{background:var(--accent);border-color:var(--accent);color:#fff;}
.btn-primary:hover{background:var(--accent-dark);border-color:var(--accent-dark);color:#fff;}
.btn-light{border-color:rgba(255,255,255,.6);color:#fff;}
.btn-light:hover{background:#fff;color:var(--ink);}
.btn-block{width:100%;justify-content:center;}
.btn svg{width:16px;height:16px;}

/* ---------- Header ---------- */
.site-header{
  position:fixed;top:0;left:0;right:0;z-index:1000;
  padding:22px 0;
  transition:background .35s ease,padding .35s ease,box-shadow .35s ease;
}
.site-header .container{display:flex;align-items:center;justify-content:space-between;gap:24px;}
.site-header.is-scrolled{
  background:rgba(247,244,238,.96);
  backdrop-filter:blur(8px);
  padding:12px 0;
  box-shadow:0 8px 30px -20px rgba(0,0,0,.4);
}
.brand{display:flex;align-items:center;gap:12px;}
.brand-mark{
  width:42px;height:42px;border-radius:50%;
  background:var(--accent);color:#fff;
  display:flex;align-items:center;justify-content:center;
  font-family:var(--serif);font-weight:700;font-size:19px;
  flex-shrink:0;
}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand-text strong{font-family:var(--serif);font-size:19px;letter-spacing:.02em;}
.brand-text span{font-size:10px;letter-spacing:.14em;text-transform:uppercase;color:var(--gray);}
.site-header:not(.is-scrolled) .brand-text strong,
.hero-header .brand-text strong{color:inherit;}

.main-nav{display:flex;align-items:center;gap:6px;}
.main-nav a{
  padding:10px 16px;font:600 12.5px/1 var(--sans);
  letter-spacing:.05em;text-transform:uppercase;
  position:relative;
}
.main-nav a.active,.main-nav a:hover{color:var(--accent);}
.main-nav .has-sub{position:relative;}
.sub-nav{
  position:absolute;top:100%;left:0;min-width:260px;
  background:#fff;box-shadow:var(--shadow);
  padding:10px;opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .2s ease,transform .2s ease,visibility .2s;
}
.has-sub:hover .sub-nav{opacity:1;visibility:visible;transform:translateY(0);}
.sub-nav a{display:block;padding:12px 14px;text-transform:none;letter-spacing:0;font-size:14px;font-weight:500;color:var(--ink);}
.sub-nav a:hover{background:var(--paper-alt);color:var(--accent);}
.header-cta{display:flex;align-items:center;gap:14px;}
.header-phone{font:600 14px/1 var(--sans);display:flex;align-items:center;gap:8px;}
.header-phone svg{width:16px;height:16px;color:var(--accent);}
.nav-toggle{
  display:none;width:44px;height:44px;border:1px solid var(--ink);
  background:none;cursor:pointer;flex-shrink:0;
  align-items:center;justify-content:center;
}
.nav-toggle span,.nav-toggle span::before,.nav-toggle span::after{
  content:"";display:block;width:20px;height:2px;background:var(--ink);position:relative;transition:.25s;
}
.nav-toggle span::before{position:absolute;top:-6px;}
.nav-toggle span::after{position:absolute;top:6px;}

@media (max-width:480px){
  .container{padding:0 18px;}
  .brand-mark{width:36px;height:36px;font-size:16px;}
  .brand-text strong{font-size:15px;}
  .brand-text span{font-size:8.5px;}
  .header-cta{gap:8px;}
  .header-cta .btn-primary{padding:11px 14px;font-size:11px;}
  .nav-toggle{width:38px;height:38px;flex-shrink:0;}
}

@media (max-width:980px){
  .main-nav{
    position:fixed;inset:0 0 0 auto;width:min(360px,86vw);height:100vh;
    background:var(--ink);color:#fff;flex-direction:column;align-items:flex-start;
    padding:100px 32px 40px;gap:2px;transform:translateX(100%);transition:transform .35s ease;
    overflow-y:auto;
  }
  .nav-open .main-nav{transform:translateX(0);}
  .main-nav a{width:100%;padding:14px 0;border-bottom:1px solid rgba(255,255,255,.1);color:#fff;}
  .sub-nav{position:static;opacity:1;visibility:visible;transform:none;background:none;box-shadow:none;display:none;padding:0 0 0 14px;}
  .has-sub.open .sub-nav{display:block;}
  .sub-nav a{color:rgba(255,255,255,.75);border:none;padding:10px 0;}
  .header-phone{display:none;}
  .nav-toggle{display:flex;}
}

/* ---------- Hero ---------- */
.hero{
  position:relative;min-height:92vh;display:flex;align-items:flex-end;
  background-size:cover;background-position:center;color:#fff;
  padding:160px 0 90px;
}
.hero::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(15,17,20,.35) 0%,rgba(15,17,20,.35) 45%,rgba(15,17,20,.88) 100%);
}
.hero .container{position:relative;z-index:2;}
.hero-tag{
  display:flex;flex-wrap:wrap;gap:10px;margin-bottom:26px;
}
.hero-tag span{
  border:1px solid rgba(255,255,255,.45);padding:7px 14px;
  font:600 11px/1 var(--sans);letter-spacing:.12em;text-transform:uppercase;
  border-radius:30px;
}
.hero h1{font-size:clamp(2.3rem,5vw,4rem);max-width:900px;color:#fff;}
.hero p.lead{color:rgba(255,255,255,.85);}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap;margin-top:34px;}
.page-hero{min-height:56vh;padding:170px 0 70px;}
.page-hero h1{font-size:clamp(2rem,4vw,3rem);}
.breadcrumbs{font:600 12px/1 var(--sans);letter-spacing:.08em;text-transform:uppercase;color:rgba(255,255,255,.75);margin-bottom:20px;}
.breadcrumbs a{color:#fff;}
.breadcrumbs a:hover{color:var(--gold);}

/* ---------- Identity strip (mütehahhit + mimar vurgusu) ---------- */
.identity-strip{background:var(--ink);color:#fff;padding:26px 0;}
.identity-strip .container{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:20px 40px;
}
.identity-strip .pitch{font-family:var(--serif);font-size:1.05rem;max-width:560px;}
.identity-strip .pitch strong{color:var(--gold);}
.identity-pills{display:flex;flex-wrap:wrap;gap:10px;}
.identity-pills span{
  font:600 11.5px/1 var(--sans);letter-spacing:.06em;text-transform:uppercase;
  padding:9px 15px;border:1px solid rgba(255,255,255,.25);
}

/* ---------- Service cards ---------- */
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:2px;background:var(--line);}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:32px;}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:48px;}
@media (max-width:980px){.grid-4{grid-template-columns:repeat(2,1fr);}.grid-3{grid-template-columns:repeat(2,1fr);}}
@media (max-width:640px){.grid-4{grid-template-columns:1fr;}.grid-3{grid-template-columns:1fr;}.grid-2{grid-template-columns:1fr;gap:32px;}}

.service-card{
  background:var(--paper);padding:44px 34px;transition:background .3s ease,color .3s ease;
  display:flex;flex-direction:column;min-height:340px;
}
.service-card .num{font-family:var(--serif);font-size:13px;color:var(--accent);letter-spacing:.1em;margin-bottom:22px;}
.service-card .icon{width:48px;height:48px;margin-bottom:22px;color:var(--accent);}
.service-card h3{font-size:1.3rem;margin-bottom:14px;}
.service-card p{color:var(--gray);font-size:.95rem;flex:1;}
.service-card a.more{font:600 12px/1 var(--sans);letter-spacing:.08em;text-transform:uppercase;color:var(--ink);display:inline-flex;align-items:center;gap:8px;margin-top:18px;}
.service-card:hover{background:var(--ink);color:#fff;}
.service-card:hover p{color:rgba(255,255,255,.7);}
.service-card:hover a.more{color:#fff;}
.service-card:hover .icon{color:var(--gold);}

/* ---------- Photo + text split ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:0;align-items:stretch;}
.split.reverse{direction:rtl;}
.split.reverse > *{direction:ltr;}
.split-media{position:relative;min-height:420px;overflow:hidden;}
.split-media img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0;}
.split-copy{display:flex;flex-direction:column;justify-content:center;padding:70px 60px;}
@media (max-width:900px){
  .split{grid-template-columns:1fr;}
  .split-media{min-height:320px;}
  .split-copy{padding:50px 28px;}
}

/* ---------- Process ---------- */
.process{display:grid;grid-template-columns:repeat(5,1fr);gap:24px;counter-reset:step;}
@media (max-width:980px){.process{grid-template-columns:repeat(2,1fr);}}
@media (max-width:560px){.process{grid-template-columns:1fr;}}
.process-step{padding:28px 0;border-top:2px solid var(--ink);}
.process-step .step-no{font-family:var(--serif);font-size:2rem;color:var(--accent);display:block;margin-bottom:14px;}
.process-step h4{font-size:1.02rem;margin-bottom:8px;}
.process-step p{font-size:.9rem;color:var(--gray);margin:0;}

/* ---------- Value / badge list ---------- */
.value-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:36px;}
@media (max-width:980px){.value-grid{grid-template-columns:repeat(2,1fr);}}
@media (max-width:560px){.value-grid{grid-template-columns:1fr;}}
.value-item{text-align:center;}
.value-item .icon{width:46px;height:46px;margin:0 auto 18px;color:var(--accent);}
.value-item h4{font-size:1rem;margin-bottom:8px;}
.value-item p{font-size:.9rem;color:var(--gray);margin:0;}

/* ---------- Gallery ---------- */
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:24px;}
@media (max-width:900px){.gallery{grid-template-columns:repeat(2,1fr);}}
@media (max-width:560px){.gallery{grid-template-columns:1fr;}}
.gallery-item{position:relative;overflow:hidden;background:var(--ink);}
.gallery-item img{width:100%;height:340px;object-fit:cover;transition:transform .6s ease;}
.gallery-item:hover img{transform:scale(1.08);}
.gallery-cap{
  position:absolute;left:0;right:0;bottom:0;padding:22px;
  background:linear-gradient(0deg,rgba(0,0,0,.75),transparent);color:#fff;
}
.gallery-cap .tag{font:600 10.5px/1 var(--sans);letter-spacing:.14em;text-transform:uppercase;color:var(--gold);display:block;margin-bottom:6px;}
.gallery-cap h4{color:#fff;font-size:1.05rem;margin:0;}
.gallery-filter{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:44px;}
.gallery-filter button{
  border:1px solid var(--line);background:transparent;padding:10px 18px;
  font:600 11.5px/1 var(--sans);letter-spacing:.08em;text-transform:uppercase;cursor:pointer;
}
.gallery-filter button.active,.gallery-filter button:hover{background:var(--ink);border-color:var(--ink);color:#fff;}

/* ---------- Note / disclosure box ---------- */
.note-box{
  border:1px solid var(--line);background:var(--paper-alt);padding:22px 26px;
  font-size:.9rem;color:var(--ink-soft);margin-top:40px;
}
.note-box strong{color:var(--ink);}

/* ---------- FAQ ---------- */
.faq-item{border-bottom:1px solid var(--line);}
.faq-q{
  display:flex;align-items:center;justify-content:space-between;gap:20px;
  padding:26px 0;cursor:pointer;font-family:var(--serif);font-size:1.1rem;
}
.faq-q .plus{width:22px;height:22px;position:relative;flex-shrink:0;}
.faq-q .plus::before,.faq-q .plus::after{content:"";position:absolute;background:var(--accent);transition:.25s;}
.faq-q .plus::before{left:0;top:50%;width:100%;height:2px;transform:translateY(-50%);}
.faq-q .plus::after{top:0;left:50%;width:2px;height:100%;transform:translateX(-50%);}
.faq-item.open .plus::after{transform:translateX(-50%) rotate(90deg);opacity:0;}
.faq-a{max-height:0;overflow:hidden;transition:max-height .35s ease;}
.faq-a p{color:var(--gray);padding-bottom:24px;max-width:720px;}
.faq-item.open .faq-a{max-height:400px;}

/* ---------- CTA band ---------- */
.cta-band{
  background:var(--accent);color:#fff;padding:80px 0;text-align:center;
}
.cta-band h2{color:#fff;}
.cta-band .lead{color:rgba(255,255,255,.9);margin:0 auto 30px;}
.cta-band .btn{border-color:#fff;color:#fff;}
.cta-band .btn:hover{background:#fff;color:var(--accent);}

/* ---------- Contact ---------- */
.contact-wrap{display:grid;grid-template-columns:1.1fr 1fr;gap:60px;align-items:start;}
@media (max-width:900px){.contact-wrap{grid-template-columns:1fr;}}
.info-card{display:flex;gap:18px;padding:24px 0;border-bottom:1px solid var(--line);}
.info-card .icon{width:26px;height:26px;color:var(--accent);flex-shrink:0;margin-top:2px;}
.info-card h4{font-size:.95rem;text-transform:uppercase;letter-spacing:.06em;font-family:var(--sans);margin-bottom:6px;}
.info-card p{margin:0;color:var(--gray);}
.map-frame{width:100%;height:280px;border:0;filter:grayscale(35%) contrast(1.05);margin-top:30px;}

.form-card{background:#fff;padding:44px;box-shadow:var(--shadow);}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:20px;}
@media (max-width:560px){.form-row{grid-template-columns:1fr;}}
.field{margin-bottom:20px;}
.field label{display:block;font:600 11.5px/1 var(--sans);letter-spacing:.08em;text-transform:uppercase;margin-bottom:9px;color:var(--ink-soft);}
.field input,.field select,.field textarea{
  width:100%;border:1px solid var(--line);background:var(--paper);
  padding:14px 16px;font:15px/1.4 var(--sans);color:var(--ink);
}
.field textarea{resize:vertical;min-height:130px;}
.field input:focus,.field select:focus,.field textarea:focus{outline:none;border-color:var(--accent);background:#fff;}
.hp-field{position:absolute;left:-9999px;top:-9999px;}
.form-msg{margin-top:16px;padding:14px 16px;font-size:.9rem;display:none;}
.form-msg.show{display:block;}
.form-msg.ok{background:#e7f3ea;color:#28633a;border:1px solid #bfe0c8;}
.form-msg.err{background:#fbe9e7;color:#8a2a1c;border:1px solid #f2c3ba;}
.form-msg.sending{background:var(--paper-alt);color:var(--ink-soft);border:1px solid var(--line);}

/* ---------- Footer ---------- */
.site-footer{background:var(--ink);color:rgba(255,255,255,.75);padding:80px 0 0;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;padding-bottom:60px;border-bottom:1px solid rgba(255,255,255,.12);}
@media (max-width:900px){.footer-grid{grid-template-columns:1fr 1fr;}}
@media (max-width:560px){.footer-grid{grid-template-columns:1fr;}}
.footer-grid h5{color:#fff;font:600 12px/1 var(--sans);letter-spacing:.1em;text-transform:uppercase;margin-bottom:22px;}
.footer-grid ul li{margin-bottom:12px;}
.footer-grid a:hover{color:#fff;}
.footer-brand p{max-width:320px;color:rgba(255,255,255,.6);font-size:.92rem;}
.footer-social{display:flex;gap:12px;margin-top:20px;}
.footer-social a{width:38px;height:38px;border:1px solid rgba(255,255,255,.25);display:flex;align-items:center;justify-content:center;}
.footer-social a:hover{background:#fff;color:var(--ink);}
.footer-social svg{width:16px;height:16px;}
.footer-bottom{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;padding:24px 0;font-size:12.5px;color:rgba(255,255,255,.5);}

/* ---------- WhatsApp float ---------- */
.wa-float{
  position:fixed;right:26px;bottom:26px;z-index:900;
  width:58px;height:58px;border-radius:50%;background:#25d366;color:#fff;
  display:flex;align-items:center;justify-content:center;box-shadow:0 12px 30px -10px rgba(0,0,0,.5);
}
.wa-float svg{width:28px;height:28px;}

/* ---------- Misc ---------- */
.tag-list{display:flex;flex-wrap:wrap;gap:10px;margin:24px 0;}
.tag-list span{border:1px solid var(--line);padding:8px 14px;font-size:12.5px;font-weight:600;text-transform:uppercase;letter-spacing:.05em;}
.divider{width:70px;height:2px;background:var(--accent);margin:20px 0;}
.two-col-text{columns:2;column-gap:48px;}
@media (max-width:768px){.two-col-text{columns:1;}}
.stat-row{display:flex;flex-wrap:wrap;gap:50px;margin-top:10px;}
.stat-row .stat strong{display:block;font-family:var(--serif);font-size:2rem;color:var(--ink);}
.stat-row .stat span{font-size:.85rem;color:var(--gray);text-transform:uppercase;letter-spacing:.05em;}
.bg-ink .stat-row .stat strong{color:#fff;}