/* =========================================================
   ATÖLYE İÇ MİMARLIK — Tasarım Sistemi
   Palet:  Ink #14171C · Paper #F5F2EC · Blueprint #2451B3 · Brass #B8863B
   Tipografi: Fraunces (başlık) + Work Sans (gövde)
   ========================================================= */

:root{
  --ink:#22262C;
  --ink-soft:#2C3138;
  --paper:#F4F5F6;
  --paper-deep:#E7E9EB;
  --line:#D7DADD;
  --steel:#6E7680;
  --steel-light:#9BA3AC;
  --blueprint:#C67C3E;
  --blueprint-deep:#9A5C28;
  --brass:#C67C3E;
  --brass-light:#E3A15F;
  --text:#22262C;
  --muted:#6B7178;
  --white:#FFFFFF;
  --radius-s:4px;
  --radius-m:10px;
  --shadow-card:0 1px 0 rgba(34,38,44,.06);
  --primary: var(--blueprint);
  --secondary: var(--brass);
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--paper);
  color:var(--text);
  font-family:'Work Sans', sans-serif;
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block;}
a{color:inherit;text-decoration:none;}
ul{list-style:none;margin:0;padding:0;}
h1,h2,h3,h4{
  font-family:'Fraunces', serif;
  font-weight:600;
  line-height:1.15;
  margin:0 0 .5em;
  color:var(--ink);
}
h1{font-size:clamp(2.4rem,4.5vw,4rem);font-weight:500;}
h2{font-size:clamp(1.8rem,3vw,2.6rem);}
h3{font-size:1.3rem;}
p{margin:0 0 1em;color:var(--text);}
.container{max-width:1180px;margin:0 auto;padding:0 24px;}
.container-narrow{max-width:760px;margin:0 auto;padding:0 24px;}

:focus-visible{outline:3px solid var(--blueprint);outline-offset:2px;}

section{padding:88px 0;}
@media(max-width:720px){section{padding:56px 0;}}

.section-head{max-width:640px;margin-bottom:48px;}
.section-head p{color:var(--muted);font-size:1.05rem;}
.section-head.center{margin-left:auto;margin-right:auto;text-align:center;}

.kicker{
  display:inline-block;font-family:'Fraunces', serif;font-style:italic;
  color:var(--blueprint);font-size:1.05rem;margin-bottom:.4em;
}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:14px 28px;border-radius:var(--radius-s);
  font-weight:600;font-size:.95rem;border:1px solid transparent;
  cursor:pointer;transition:transform .18s ease, background .18s ease, color .18s ease, border-color .18s ease;
}
.btn:hover{transform:translateY(-2px);}
.btn-primary{background:var(--blueprint-deep);color:var(--white);}
.btn-primary:hover{background:var(--blueprint);}
.btn-outline{border-color:var(--ink);color:var(--ink);background:transparent;}
.btn-outline:hover{background:var(--ink);color:var(--paper);}
.btn-brass{background:var(--brass);color:var(--ink);}
.btn-brass:hover{background:var(--brass-light);}
.btn-light{background:var(--paper);color:var(--ink);border-color:var(--line);}
.btn-block{width:100%;justify-content:center;}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:50;background:rgba(34,38,44,.94);
  backdrop-filter:blur(8px);border-bottom:1px solid rgba(199,205,211,.18);
}
.site-header .inner{display:flex;align-items:center;justify-content:space-between;padding:16px 24px;max-width:1180px;margin:0 auto;}
.brand{display:flex;align-items:center;gap:12px;font-family:'Fraunces',serif;font-size:1.25rem;color:var(--paper);letter-spacing:.01em;}
.brand img{height:76px;width:auto;}
.brand .brand-mark{
  width:44px;height:44px;border-radius:50%;background:var(--steel);
  color:var(--ink);display:flex;align-items:center;justify-content:center;
  font-family:'Fraunces',serif;font-style:italic;font-size:1.2rem;flex-shrink:0;
}
.brand .brand-text{display:flex;flex-direction:column;line-height:1.15;}
.brand .brand-line1{font-family:'Fraunces',serif;font-size:1.15rem;font-weight:500;color:var(--paper);}
.brand .brand-line2{font-family:'Work Sans',sans-serif;font-size:.66rem;font-weight:600;letter-spacing:.14em;color:var(--steel-light);margin-top:2px;}
.main-nav{display:flex;align-items:center;gap:30px;}
.main-nav a{font-size:.92rem;font-weight:500;color:rgba(247,242,231,.86);position:relative;padding:4px 0;letter-spacing:.01em;}
.main-nav a::after{content:"";position:absolute;left:0;bottom:0;width:0;height:1px;background:var(--brass-light);transition:width .2s ease;}
.main-nav a:hover,.main-nav a.active{color:var(--paper);}
.main-nav a:hover::after,.main-nav a.active::after{width:100%;}
.header-cta{display:flex;align-items:center;gap:18px;}
.main-nav a.btn{display:none;}
.menu-toggle{display:none;background:none;border:none;cursor:pointer;padding:6px;position:relative;z-index:60;}
.menu-toggle span{display:block;width:24px;height:2px;background:var(--paper);margin:5px 0;transition:transform .25s ease, opacity .25s ease;}
.menu-toggle.is-open span:nth-child(1){transform:translateY(7px) rotate(45deg);}
.menu-toggle.is-open span:nth-child(2){opacity:0;}
.menu-toggle.is-open span:nth-child(3){transform:translateY(-7px) rotate(-45deg);}
@media(max-width:900px){
  .main-nav{
    position:fixed;inset:0;width:100%;max-width:none;background:var(--ink);z-index:55;
    flex-direction:column;align-items:flex-start;justify-content:center;padding:32px;gap:6px;
    opacity:0;visibility:hidden;transform:translateY(-8px);transition:opacity .28s ease, transform .28s ease, visibility .28s;
  }
  .main-nav.open{opacity:1;visibility:visible;transform:translateY(0);}
  .main-nav a{color:var(--paper);font-family:'Fraunces',serif;font-size:1.7rem;font-weight:500;padding:12px 0;width:100%;border-bottom:1px solid rgba(255,255,255,.08);}
  .main-nav a::after{display:none;}
  .main-nav a.btn{font-family:'Work Sans',sans-serif;font-size:1rem;margin-top:22px;width:auto;border:none;display:inline-flex;}
  .menu-toggle{display:block;}
  .header-cta .btn-primary{display:none;}
  .brand img{height:48px;}
}

/* ---------- Hero Slider (6 slayt, görsel/video destekli) ---------- */
.hero-slider{
  position:relative;overflow:hidden;height:88vh;min-height:560px;max-height:860px;
  margin-top:-1px; /* header alt çizgisiyle kaynaşsın */
}
@media(max-width:720px){.hero-slider{height:78vh;min-height:520px;}}
.hero-slider .slide{
  position:absolute;inset:0;opacity:0;visibility:hidden;transition:opacity 1.1s ease;
  display:flex;align-items:center;
}
.hero-slider .slide.is-active{opacity:1;visibility:visible;z-index:2;}
.hero-slider .slide-media{position:absolute;inset:0;z-index:0;}
.hero-slider .slide-media img,.hero-slider .slide-media video{width:100%;height:100%;object-fit:cover;}
.hero-slider .slide-media::after{
  content:"";position:absolute;inset:0;
  background:linear-gradient(100deg, rgba(34,38,44,.68) 0%, rgba(34,38,44,.42) 42%, rgba(34,38,44,.15) 75%);
}
.bg-ink .slide-media{background:linear-gradient(120deg,#15171B,#22262C 55%,#2E333A);}
.bg-blueprint .slide-media{background:linear-gradient(120deg,#2E343B,#454C53 55%,#6E7680);}
.bg-moss .slide-media{background:linear-gradient(120deg,#1C1E22,#282B30 55%,#363A40);}
.bg-brass .slide-media{background:linear-gradient(120deg,#454C53,#6E7680 55%,#9BA3AC);}
.bg-paper-dark .slide-media{background:linear-gradient(120deg,#1A1C1F,#242629 55%,#2E3134);}
.hero-slider .slide.has-color .slide-media::after{background:none;}
.hero-slider .slide-deco{position:absolute;inset:0;z-index:0;opacity:.5;pointer-events:none;}

.hero-slider .slide-content{position:relative;z-index:2;color:var(--paper);max-width:640px;}
.hero-slider .container{width:100%;}
.hero-slider .kicker{color:var(--brass-light);font-size:1.05rem;}
.hero-slider h1{color:#fff;max-width:13ch;margin-bottom:.35em;font-size:clamp(2.1rem,4.6vw,3.6rem);}
.hero-slider .slide-sub{font-size:1.1rem;color:rgba(255,255,255,.86);max-width:46ch;margin-bottom:30px;}
.hero-slider .cta-row{display:flex;gap:14px;flex-wrap:wrap;}
.hero-slider .btn-outline{border-color:rgba(255,255,255,.55);color:#fff;}
.hero-slider .btn-outline:hover{background:#fff;color:var(--ink);}

.hero-slider .slider-controls{
  position:absolute;left:0;right:0;bottom:26px;z-index:3;
  display:flex;align-items:center;justify-content:space-between;padding:0 24px;max-width:1180px;margin:0 auto;
}
@media(max-width:720px){.hero-slider .slider-controls{bottom:18px;}}
.hero-slider .dots{display:flex;gap:9px;}
.hero-slider .dot{width:28px;height:3px;background:rgba(255,255,255,.35);border:none;cursor:pointer;padding:0;transition:background .2s ease;}
.hero-slider .dot.is-active{background:#fff;}
.hero-slider .arrows{display:flex;gap:10px;}
.hero-slider .arrow{
  width:42px;height:42px;border-radius:50%;border:1px solid rgba(255,255,255,.4);background:rgba(255,255,255,.08);
  color:#fff;display:flex;align-items:center;justify-content:center;cursor:pointer;font-size:1.1rem;transition:background .2s ease;
}
.hero-slider .arrow:hover{background:rgba(255,255,255,.22);}
@media(max-width:560px){.hero-slider .arrows{display:none;}}

.blueprint-frame{
  position:relative;border:1px solid var(--line);border-radius:var(--radius-m);
  background:
    linear-gradient(var(--paper-deep) 1px,transparent 1px) 0 0/28px 28px,
    linear-gradient(90deg, var(--paper-deep) 1px, transparent 1px) 0 0/28px 28px,
    var(--paper);
  padding:26px;min-height:420px;
}
.blueprint-frame::before,.blueprint-frame::after{
  content:"";position:absolute;width:22px;height:22px;border:2px solid var(--brass);
}
.blueprint-frame::before{top:10px;left:10px;border-right:none;border-bottom:none;}
.blueprint-frame::after{bottom:10px;right:10px;border-left:none;border-top:none;}

/* ---------- Cards ---------- */
.grid{display:grid;gap:28px;}
.grid-3{grid-template-columns:repeat(3,1fr);}
.grid-4{grid-template-columns:repeat(4,1fr);}
.grid-2{grid-template-columns:repeat(2,1fr);}
@media(max-width:900px){.grid-3,.grid-4{grid-template-columns:repeat(2,1fr);}}
@media(max-width:620px){.grid-3,.grid-4,.grid-2{grid-template-columns:1fr;}}

.media-placeholder{
  aspect-ratio:4/3;border-radius:var(--radius-s);position:relative;overflow:hidden;
  background:
    linear-gradient(var(--paper-deep) 1px,transparent 1px) 0 0/22px 22px,
    linear-gradient(90deg, var(--paper-deep) 1px, transparent 1px) 0 0/22px 22px,
    #EFEAE0;
  display:flex;align-items:flex-end;
}
.media-placeholder img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;transition:transform .6s cubic-bezier(.2,.7,.3,1);}
.project-card:hover .media-placeholder img{transform:scale(1.06);}
.media-placeholder{clip-path:inset(0);}
.media-placeholder .tag{
  position:relative;margin:14px;padding:6px 12px;background:var(--ink);color:var(--paper);
  font-size:.72rem;border-radius:20px;font-weight:600;
}

.project-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius-m);overflow:hidden;transition:box-shadow .2s ease, transform .2s ease;}
.project-card:hover{transform:translateY(-4px);box-shadow:0 18px 34px -20px rgba(20,23,28,.35);}
.project-card .body{padding:20px 22px 24px;}
.project-card .meta{display:flex;gap:14px;color:var(--muted);font-size:.82rem;margin-bottom:8px;flex-wrap:wrap;}
.project-card h3{margin-bottom:6px;font-size:1.15rem;}
.project-card p{color:var(--muted);font-size:.92rem;margin-bottom:0;}
.project-card.featured{grid-column:span 2;}
@media(max-width:900px){.project-card.featured{grid-column:span 1;}}
.project-card.featured .media-placeholder{aspect-ratio:16/9;}

.service-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius-m);padding:30px 26px;transition:border-color .2s ease;}
.service-card:hover{border-color:var(--blueprint);}
.service-card .icon-num{
  width:50px;height:50px;border-radius:50%;border:1.5px solid var(--brass);
  display:flex;align-items:center;justify-content:center;margin-bottom:18px;color:var(--brass);
}
.service-card .icon-num svg{width:24px;height:24px;}
.service-card h3{margin-bottom:8px;}
.service-card p{color:var(--muted);font-size:.94rem;margin-bottom:14px;}
.service-card a{font-weight:600;color:var(--blueprint);font-size:.9rem;}

/* ---------- Process (gerçek sıra olduğu için numaralandırma kullanılıyor) ---------- */
.process-list{display:flex;flex-direction:column;}
.process-row{
  display:grid;grid-template-columns:110px 1fr;gap:28px;padding:34px 0;border-top:1px solid var(--line);
}
.process-row:last-child{border-bottom:1px solid var(--line);}
.process-row .step-no{font-family:'Fraunces',serif;font-style:italic;font-size:2.6rem;color:var(--blueprint);}
.process-row h3{margin-bottom:6px;}
.process-row p{color:var(--muted);margin:0;max-width:60ch;}
@media(max-width:620px){.process-row{grid-template-columns:60px 1fr;}.process-row .step-no{font-size:1.8rem;}}

/* ---------- About ---------- */
.about-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:60px;align-items:center;}
@media(max-width:900px){.about-grid{grid-template-columns:1fr;}}
.principle-list{margin-top:24px;display:grid;gap:16px;}
.principle-list li{display:flex;gap:14px;align-items:flex-start;}
.principle-list li .mark{width:8px;height:8px;margin-top:8px;background:var(--brass);flex-shrink:0;}

/* ---------- Before / After Slider ---------- */
.ba-slider{position:relative;aspect-ratio:16/9;border-radius:var(--radius-m);overflow:hidden;border:1px solid var(--line);user-select:none;}
.ba-slider .ba-before,.ba-slider .ba-after{position:absolute;inset:0;}
.ba-slider .ba-after{clip-path:inset(0 0 0 50%);}
.ba-slider .ba-before .media-placeholder,.ba-slider .ba-after .media-placeholder{aspect-ratio:auto;height:100%;}
.ba-slider .ba-handle{position:absolute;top:0;bottom:0;left:50%;width:0;transform:translateX(-50%);cursor:ew-resize;}
.ba-slider .ba-handle::before{content:"";position:absolute;top:0;bottom:0;left:0;width:2px;background:var(--white);}
.ba-slider .ba-handle::after{
  content:"↔";position:absolute;top:50%;left:0;transform:translate(-50%,-50%);
  width:44px;height:44px;border-radius:50%;background:var(--white);color:var(--ink);
  display:flex;align-items:center;justify-content:center;font-size:1.1rem;box-shadow:0 6px 18px rgba(0,0,0,.2);
}
.ba-label{position:absolute;top:16px;padding:5px 12px;background:var(--ink);color:var(--paper);font-size:.72rem;border-radius:20px;font-weight:600;z-index:2;}
.ba-label.left{left:16px;}.ba-label.right{right:16px;}

/* ---------- Testimonials ---------- */
.testimonial-card{background:var(--ink);color:var(--paper);border-radius:var(--radius-m);padding:34px 30px;}
.testimonial-card p{color:var(--paper);font-size:1.05rem;font-family:'Fraunces',serif;font-weight:400;font-style:italic;}
.testimonial-card .who{display:flex;align-items:center;gap:12px;margin-top:18px;}
.testimonial-card .avatar{width:42px;height:42px;border-radius:50%;background:var(--brass);color:var(--ink);display:flex;align-items:center;justify-content:center;font-weight:700;font-family:'Fraunces',serif;}
.testimonial-card .who b{display:block;font-size:.95rem;}
.testimonial-card .who span{color:#B9B6AE;font-size:.82rem;}

/* ---------- Dark band (CTA) ---------- */
.band-dark{background:var(--ink);color:var(--paper);}
.band-dark h2{color:var(--paper);}
.band-dark p{color:#C7C4BC;}
.cta-band .inner{display:flex;align-items:center;justify-content:space-between;gap:30px;flex-wrap:wrap;}

/* ---------- Footer ---------- */
.site-footer{background:var(--ink);color:#B9B6AE;padding:70px 0 30px;}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1.2fr;gap:40px;margin-bottom:50px;}
@media(max-width:820px){.footer-grid{grid-template-columns:1fr 1fr;}}
@media(max-width:520px){.footer-grid{grid-template-columns:1fr;}}
.site-footer h4{color:var(--paper);font-family:'Work Sans',sans-serif;font-weight:600;font-size:.9rem;margin-bottom:16px;}
.site-footer .brand{color:var(--paper);margin-bottom:14px;}
.site-footer a:hover{color:var(--brass-light);}
.site-footer li{margin-bottom:10px;font-size:.92rem;}
.footer-bottom{border-top:1px solid rgba(255,255,255,.12);padding-top:24px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;font-size:.82rem;}

/* ---------- Forms ---------- */
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;}
@media(max-width:620px){.form-grid{grid-template-columns:1fr;}}
.field{display:flex;flex-direction:column;gap:8px;margin-bottom:20px;}
.field.full{grid-column:1/-1;}
.field label{font-size:.88rem;font-weight:600;color:var(--ink);}
.field input,.field select,.field textarea{
  padding:13px 14px;border:1px solid var(--line);border-radius:var(--radius-s);
  background:var(--white);font-family:inherit;font-size:.96rem;color:var(--text);
}
.field input:focus,.field select:focus,.field textarea:focus{border-color:var(--blueprint);outline:none;}
.checkbox-row{display:flex;flex-wrap:wrap;gap:18px;}
.checkbox-row label{display:flex;align-items:center;gap:8px;font-weight:500;font-size:.92rem;}
.form-card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius-m);padding:36px;}
.alert{padding:16px 20px;border-radius:var(--radius-s);margin-bottom:24px;font-size:.94rem;}
.alert-success{background:#E7F0E1;color:#2E5B2A;border:1px solid #BFDCB4;}
.alert-error{background:#FBE7E4;color:#8A2E22;border:1px solid #F1C4BC;}

/* ---------- Breadcrumb / page header ---------- */
.page-header{
  position:relative;padding:64px 0 48px;border-bottom:1px solid var(--line);overflow:hidden;
  background:
    linear-gradient(var(--paper-deep) 1px,transparent 1px) 0 0/26px 26px,
    linear-gradient(90deg, var(--paper-deep) 1px, transparent 1px) 0 0/26px 26px,
    var(--paper);
}
.page-header::after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:3px;background:linear-gradient(90deg, var(--blueprint-deep), var(--brass-light) 60%, transparent);}
.page-header h1{max-width:24ch;font-size:clamp(2rem,4vw,3.1rem);}
.page-header .crumb{color:var(--muted);font-size:.86rem;margin-bottom:14px;}
.page-header .crumb a:hover{color:var(--blueprint);}

/* ---------- Detail layout ---------- */
.detail-grid{display:grid;grid-template-columns:1fr 320px;gap:50px;}
@media(max-width:900px){.detail-grid{grid-template-columns:1fr;}}
.spec-box{background:var(--white);border:1px solid var(--line);border-radius:var(--radius-m);padding:26px;height:fit-content;}
.spec-box dl{margin:0;}
.spec-box dt{color:var(--muted);font-size:.8rem;margin-top:14px;}
.spec-box dt:first-child{margin-top:0;}
.spec-box dd{margin:2px 0 0;font-weight:600;}
.gallery-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin-top:24px;}

/* ---------- Category filter pills ---------- */
.filter-row{display:flex;gap:10px;flex-wrap:wrap;margin-bottom:40px;}
.filter-pill{padding:9px 18px;border:1px solid var(--line);border-radius:20px;font-size:.86rem;font-weight:500;background:var(--white);}
.filter-pill.active{background:var(--ink);color:var(--paper);border-color:var(--ink);}

/* ---------- Reveal on scroll (tek, sakin bir giriş efekti) ---------- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .7s ease, transform .7s ease;}
.reveal.in-view{opacity:1;transform:translateY(0);}
@media(prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none;}}

/* Utility */
.mt-0{margin-top:0;}
.text-muted{color:var(--muted);}