/* ==========================================================
   Arda İklimlendirme — stil
   Palet: soğuk mavi (klima) + sıcak turuncu (kombi), koyu zemin
   ========================================================== */

:root{
  --bg:#070b10;
  --bg-2:#090e15;
  --bg-3:#0b111a;
  --surface:#0e151f;
  --surface-2:#121b27;
  --surface-3:#16202e;

  --line:rgba(56,189,248,.16);
  --line-soft:rgba(255,255,255,.06);

  --text:#eef4fb;
  --muted:#95a6ba;
  --muted-2:#63748a;

  --cool:#38bdf8;
  --cool-2:#0ea5e9;
  --cool-3:#7dd3fc;
  --cool-deep:#0284c7;

  --warm:#ff8a3d;
  --warm-2:#ffb066;

  --wa:#25d366;
  --wa-d:#1da851;

  --grad-cool:linear-gradient(135deg,#7dd3fc 0%,#38bdf8 45%,#0284c7 100%);
  --grad-warm:linear-gradient(135deg,#ffc48a 0%,#ff8a3d 55%,#e2650f 100%);
  --grad-soft:linear-gradient(135deg,rgba(125,211,252,.14),rgba(2,132,199,.14));

  --r-lg:22px;
  --r-md:16px;
  --r-sm:11px;

  --shadow:0 24px 60px -22px rgba(0,0,0,.75);
  --shadow-cool:0 18px 50px -18px rgba(2,132,199,.5);
  --shadow-warm:0 18px 50px -18px rgba(226,101,15,.45);

  --maxw:1180px;
  --ease:cubic-bezier(.22,1,.36,1);

  /* imza paketine verilen renkler */
  --imza-vurgu:var(--cool);
  --imza-perde:#070b10;
  --imza-hiz:.7s;

  /* termostat 0 (soğuk) → 1 (sıcak); JS günceller */
  --isi:0.43;
  --header-h:74px;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--header-h) + 12px)}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:"Plus Jakarta Sans",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
  font-size:16px;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  overflow-x:hidden;
}
img,svg{max-width:100%}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{font-family:Sora,system-ui,sans-serif;font-weight:600;line-height:1.15;margin:0}
p{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
::selection{background:rgba(56,189,248,.3)}

.wrap{width:min(100% - 40px,var(--maxw));margin-inline:auto}

/* ---------- düğmeler ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:9px;
  padding:14px 24px;border-radius:999px;border:1px solid transparent;
  font-weight:600;font-size:15px;cursor:pointer;
  transition:transform .35s var(--ease),box-shadow .35s var(--ease),background .3s,border-color .3s,color .3s;
  white-space:nowrap;
}
.btn svg{width:19px;height:19px;fill:currentColor;flex:none}
.btn:hover{transform:translateY(-2px)}
.btn-primary{background:var(--grad-cool);color:#04121c;box-shadow:var(--shadow-cool)}
.btn-primary:hover{box-shadow:0 22px 55px -16px rgba(2,132,199,.7)}
.btn-wa{background:var(--wa);color:#06210f;box-shadow:0 18px 44px -20px rgba(37,211,102,.6)}
.btn-wa:hover{background:#2ee06f}
.btn-ghost{background:transparent;border-color:var(--line);color:var(--text)}
.btn-ghost:hover{border-color:var(--cool);background:rgba(56,189,248,.08)}
.btn-sm{padding:10px 18px;font-size:14px}

/* ---------- üst bar ---------- */
.site-header{
  position:fixed;inset:0 0 auto 0;z-index:60;
  background:rgba(7,11,16,.72);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid transparent;
  transition:background .35s,border-color .35s,box-shadow .35s;
}
.site-header.scrolled{background:rgba(7,11,16,.92);border-bottom-color:var(--line-soft);box-shadow:0 12px 34px -22px #000}
.header-inner{height:var(--header-h);display:flex;align-items:center;gap:22px}

.brand{display:flex;align-items:center;gap:11px;flex:none}
.brand-mark{width:40px;height:40px;display:grid;place-items:center;border-radius:12px;background:rgba(56,189,248,.08);border:1px solid var(--line);flex:none}
.brand-mark.sm{width:34px;height:34px}
.brand-mark .logo-svg{width:24px;height:auto;display:block}
.brand-mark.sm .logo-svg{width:21px}
.brand-text{display:flex;flex-direction:column;line-height:1.15}
.brand-name{font-family:Sora,sans-serif;font-size:16px;font-weight:600;letter-spacing:.2px}
.brand-name b{font-weight:700;background:var(--grad-cool);-webkit-background-clip:text;background-clip:text;color:transparent}
.brand-sub{font-size:11px;color:var(--muted-2);letter-spacing:.9px;text-transform:uppercase}

.header-cta{display:flex;align-items:center;gap:10px;margin-left:auto}
.phone-link{display:inline-flex;align-items:center;gap:8px;font-weight:600;font-size:15px;color:var(--text);padding:8px 12px;border-radius:999px;border:1px solid var(--line);transition:border-color .3s,background .3s}
.phone-link svg{width:17px;height:17px;fill:var(--cool)}
.phone-link:hover{border-color:var(--cool);background:rgba(56,189,248,.07)}

.burger{display:grid;width:42px;height:42px;border-radius:12px;background:rgba(255,255,255,.04);border:1px solid var(--line-soft);cursor:pointer;padding:0;place-items:center;gap:5px}
.burger span{display:block;width:18px;height:2px;background:var(--text);border-radius:2px;transition:transform .3s var(--ease),opacity .2s}
.burger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger[aria-expanded="true"] span:nth-child(2){opacity:0}
.burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* İlerleme çubuğu: width DEĞİL transform. width yazmak her karede
   düzeni yeniden hesaplatıyordu (ölçüldü: kaydırırken düzen 54 kez/sn,
   44.9 ms/sn). transform derlenir, düzene dokunmaz. Genişlik %100
   sabit, dolgu scaleX ile veriliyor; sol kenardan büyüsün diye
   transform-origin sola alındı. */
.header-progress{height:2px;width:100%;transform:scaleX(0);transform-origin:0 50%;
  background:var(--grad-cool);transition:transform .1s linear;will-change:transform}

/* ---------- mobil menü ---------- */
/* ---- perde ---- */
.mm-backdrop{
  position:fixed;inset:0;z-index:70;
  background:rgba(3,6,10,.62);
  opacity:0;visibility:hidden;
  backdrop-filter:blur(0px);-webkit-backdrop-filter:blur(0px);
  transition:opacity .45s var(--ease),backdrop-filter .45s var(--ease),visibility 0s .45s;
}
.mm-backdrop.acik{
  opacity:1;visibility:visible;
  backdrop-filter:blur(6px);-webkit-backdrop-filter:blur(6px);
  transition:opacity .45s var(--ease),backdrop-filter .55s var(--ease),visibility 0s;
}

/* ---- panel: sağdan kayar, kenarında ısınan bir şerit ---- */
.mobile-menu{
  position:fixed;top:0;right:0;bottom:0;width:min(86vw,380px);z-index:80;
  background:linear-gradient(200deg,var(--surface),var(--bg-2) 55%);
  border-left:1px solid var(--line-soft);
  padding:20px 22px 28px;display:flex;flex-direction:column;
  overflow-y:auto;overscroll-behavior:contain;
  visibility:hidden;
  transform:translateX(100%);
  box-shadow:none;
  transition:transform .55s var(--ease),box-shadow .55s var(--ease),visibility 0s .55s;
}
.mobile-menu.acik{
  visibility:visible;transform:none;
  box-shadow:-30px 0 80px -30px rgba(0,0,0,.9);
  transition:transform .55s var(--ease),box-shadow .55s var(--ease),visibility 0s;
}
/* sol kenarda soğuktan sıcağa giden ince şerit — panel açılırken yukarıdan aşağı çizilir */
.mobile-menu::before{
  content:"";position:absolute;left:-1px;top:0;bottom:0;width:2px;
  background:linear-gradient(180deg,var(--cool-3),var(--cool) 40%,var(--warm) 100%);
  transform:scaleY(0);transform-origin:top;
  transition:transform .7s .12s var(--ease);
}
.mobile-menu.acik::before{transform:scaleY(1)}

/* ---- içerik: sırayla gelir ---- */
.mm-top,.mm-nav a,.mm-actions .btn{
  opacity:0;transform:translateX(26px);
  transition:opacity .5s var(--ease),transform .5s var(--ease);
}
.mobile-menu.acik .mm-top{opacity:1;transform:none;transition-delay:.1s}
.mobile-menu.acik .mm-nav a{opacity:1;transform:none;transition-delay:calc(.14s + var(--i,0) * .055s)}
.mobile-menu.acik .mm-actions .btn{opacity:1;transform:none}
.mobile-menu.acik .mm-actions .btn:nth-child(1){transition-delay:.52s}
.mobile-menu.acik .mm-actions .btn:nth-child(2){transition-delay:.59s}
/* kapanırken beklemeden solsun */
.mobile-menu:not(.acik) .mm-top,
.mobile-menu:not(.acik) .mm-nav a,
.mobile-menu:not(.acik) .mm-actions .btn{transition-duration:.2s;transition-delay:0s}
.mm-top{display:flex;align-items:center;justify-content:space-between;padding-bottom:16px;border-bottom:1px solid var(--line-soft)}
.mm-title{font-family:Sora,sans-serif;font-size:15px;font-weight:600}
.mm-close{width:38px;height:38px;display:grid;place-items:center;border-radius:10px;background:rgba(255,255,255,.04);border:1px solid var(--line-soft);color:var(--text);cursor:pointer}
.mm-close svg{width:20px;height:20px;fill:none}
.mm-nav{display:flex;flex-direction:column;padding:18px 0;gap:2px}
.mm-nav a{
  position:relative;padding:13px 14px;border-radius:11px;font-size:16px;font-weight:500;color:var(--muted);
  overflow:hidden;
}
.mm-nav a::before{
  content:"";position:absolute;left:0;top:8px;bottom:8px;width:2px;border-radius:2px;
  background:var(--grad-cool);transform:scaleY(0);transform-origin:center;
  transition:transform .3s var(--ease);
}
.mm-nav a:hover,.mm-nav a:active,.mm-nav a.active{background:rgba(56,189,248,.08);color:var(--text)}
.mm-nav a:hover::before,.mm-nav a.active::before{transform:scaleY(1)}
.mm-nav a.active{font-weight:600}
.mm-actions{margin-top:auto;display:flex;flex-direction:column;gap:10px}
.mm-actions .btn{width:100%}

/* ---------- hero ---------- */
.hero{position:relative;padding:calc(var(--header-h) + 70px) 0 80px;overflow:hidden}
.hero-glow{
  position:absolute;inset:-20% -10% auto;height:760px;pointer-events:none;
  background:
    radial-gradient(58% 52% at 22% 30%,rgba(56,189,248,.18),transparent 70%),
    radial-gradient(45% 45% at 82% 22%,rgba(255,138,61,.14),transparent 72%);
  filter:blur(6px);
}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(var(--line-soft) 1px,transparent 1px),linear-gradient(90deg,var(--line-soft) 1px,transparent 1px);
  background-size:64px 64px;
  mask-image:radial-gradient(70% 60% at 50% 30%,#000,transparent 78%);
  -webkit-mask-image:radial-gradient(70% 60% at 50% 30%,#000,transparent 78%);
  opacity:.5;
}
.hero-inner{position:relative;z-index:1;display:grid;grid-template-columns:1.05fr .95fr;gap:56px;align-items:center}

.eyebrow{
  display:inline-flex;align-items:center;gap:9px;padding:7px 15px;border-radius:999px;
  border:1px solid var(--line);background:rgba(56,189,248,.06);
  font-size:13px;font-weight:600;color:var(--cool-3);letter-spacing:.3px;
}
/* Nabiz halkasi: box-shadow yayilimi her karede stil hesabi + cizim istiyordu
   (sonsuz, kompozitor disi; portfolyo/arac/anim-denetim.cjs). Ayni halka artik
   ::before diski: 15px (3.5+4 yaricap) -> x1.533 (3.5+8), saydamlik .16 -> 0 =
   eski yayilim/alfa degerlerinin birebiri, ama transform/opacity = kompozitorde.
   Disk noktanin ustunde de olsa renk ayni (#38bdf8), nokta degismez. */
.eyebrow .dot{position:relative;isolation:isolate;width:7px;height:7px;border-radius:50%;background:var(--cool)}
.eyebrow .dot::before{content:"";position:absolute;inset:-4px;border-radius:50%;background:rgba(56,189,248,.16);z-index:-1;animation:pulse 2.4s infinite}
@keyframes pulse{50%{transform:scale(1.5333);opacity:0}}

.hero h1{font-size:clamp(38px,5.6vw,66px);letter-spacing:-1.5px;margin:22px 0 18px}
.hero h1 em{font-style:normal;position:relative;white-space:nowrap}
.hero h1 em.cool{background:var(--grad-cool);-webkit-background-clip:text;background-clip:text;color:transparent}
.hero h1 em.warm{background:var(--grad-warm);-webkit-background-clip:text;background-clip:text;color:transparent}
.lede{color:var(--muted);font-size:clamp(15.5px,1.25vw,18px);max-width:53ch}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:28px}
.hero-badges{display:flex;flex-wrap:wrap;gap:10px 22px;margin-top:30px}
.hero-badges li{display:inline-flex;align-items:center;gap:8px;font-size:13.5px;color:var(--muted);font-weight:500}
.hero-badges svg{width:17px;height:17px;fill:var(--cool);flex:none}

/* hero görseli — fotoğraf kartı */
.hero-art{position:relative;display:grid;place-items:center;min-height:380px}
.art-card{
  position:relative;width:100%;max-width:420px;aspect-ratio:1;
  border-radius:28px;border:1px solid var(--line);overflow:hidden;
  background:var(--surface-2);box-shadow:var(--shadow);
}
.art-card picture,.art-card img{display:block;width:100%;height:100%;object-fit:cover}
.art-card::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:
    linear-gradient(180deg,rgba(7,11,16,0) 45%,rgba(7,11,16,.55) 100%),
    radial-gradient(70% 55% at 18% 22%,rgba(56,189,248,.20),transparent 70%),
    radial-gradient(60% 50% at 84% 72%,rgba(255,138,61,.18),transparent 72%);
}
.art-tag{
  position:absolute;z-index:2;padding:6px 13px;border-radius:999px;
  font-size:12px;font-weight:700;letter-spacing:.5px;
  background:rgba(7,11,16,.7);border:1px solid var(--line-soft);
  backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);
}
.art-tag.cool{left:16px;top:16px;color:var(--cool-3);border-color:rgba(56,189,248,.3)}
.art-tag.warm{right:16px;bottom:16px;color:var(--warm-2);border-color:rgba(255,138,61,.3)}
.art-orbit{position:absolute;inset:-6%;pointer-events:none}
.art-orbit span{position:absolute;border-radius:50%;border:1px dashed var(--line-soft);inset:8%;animation:spin 40s linear infinite}
.art-orbit span:nth-child(2){inset:-2%;animation-duration:64s;animation-direction:reverse}
@keyframes spin{to{transform:rotate(360deg)}}

/* ---------- şerit ---------- */
.marquee{
  border-block:1px solid var(--line-soft);
  background:linear-gradient(90deg,var(--bg-2),var(--bg-3),var(--bg-2));
  overflow:hidden;padding:15px 0;
  mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);
  -webkit-mask-image:linear-gradient(90deg,transparent,#000 8%,#000 92%,transparent);
}
.marquee-track{display:flex;align-items:center;gap:26px;width:max-content;animation:scroll 34s linear infinite}
.marquee-track span{font-size:14px;font-weight:600;color:var(--muted);white-space:nowrap;letter-spacing:.3px}
.marquee-track .mq-lead{color:var(--cool-3);text-transform:uppercase;font-size:12.5px;letter-spacing:1.4px}
.marquee-track i{color:var(--warm);font-size:9px;font-style:normal}
@keyframes scroll{to{transform:translateX(-50%)}}
.marquee:hover .marquee-track{animation-play-state:paused}

/* ---------- bölüm ortak ---------- */
.section{padding:96px 0;position:relative}
.section-tint{background:linear-gradient(180deg,var(--bg-2),var(--bg-3) 50%,var(--bg-2));border-block:1px solid var(--line-soft)}
.section-head{max-width:660px;margin-bottom:52px}
.kicker{
  display:inline-block;font-size:12.5px;font-weight:700;letter-spacing:1.6px;text-transform:uppercase;
  color:var(--cool);margin-bottom:14px;
}
.section-head h2{font-size:clamp(27px,3.4vw,42px);letter-spacing:-.9px;margin-bottom:14px}
.section-head p{color:var(--muted);font-size:16.5px}
.section-head a{color:var(--cool-3);border-bottom:1px solid rgba(125,211,252,.35)}

/* ---------- hizmet kartları ---------- */
.cards{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.card{
  position:relative;padding:30px 26px 26px;border-radius:var(--r-lg);
  background:linear-gradient(165deg,var(--surface),var(--bg-2));
  border:1px solid var(--line-soft);overflow:hidden;
  transition:transform .45s var(--ease),border-color .35s,box-shadow .45s var(--ease);
}
.card::before{
  content:"";position:absolute;inset:0;opacity:0;transition:opacity .45s;
  background:radial-gradient(60% 60% at 50% 0%,rgba(56,189,248,.13),transparent 70%);
}
.card:hover{transform:translateY(-6px);border-color:var(--line);box-shadow:var(--shadow)}
.card:hover::before{opacity:1}
.card>*{position:relative}
.card-icon{
  width:52px;height:52px;border-radius:15px;display:grid;place-items:center;margin-bottom:18px;
  border:1px solid var(--line-soft);
}
.card-icon svg{width:26px;height:26px}
.card-icon.cool{background:rgba(56,189,248,.1);color:var(--cool-3);border-color:rgba(56,189,248,.22)}
.card-icon.warm{background:rgba(255,138,61,.1);color:var(--warm-2);border-color:rgba(255,138,61,.22)}
.card-icon.neutral{background:rgba(255,255,255,.05);color:var(--muted)}
.card h3{font-size:19px;margin-bottom:10px;letter-spacing:-.3px}
.card p{color:var(--muted);font-size:15px}
.tags{display:flex;flex-wrap:wrap;gap:7px;margin-top:18px}
.tags span{
  padding:5px 11px;border-radius:999px;font-size:12px;font-weight:600;
  background:rgba(255,255,255,.04);border:1px solid var(--line-soft);color:var(--muted-2);
}
.card-alt{background:linear-gradient(165deg,rgba(255,138,61,.07),var(--bg-2));border-color:rgba(255,138,61,.16)}
.card-alt::before{background:radial-gradient(60% 60% at 50% 0%,rgba(255,138,61,.14),transparent 70%)}

/* ---------- galeri ---------- */
.gallery{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.shot{
  margin:0;aspect-ratio:4/3;border-radius:var(--r-md);overflow:hidden;position:relative;cursor:pointer;
  border:1px solid var(--line-soft);background:var(--surface);
  transition:transform .45s var(--ease),border-color .35s;
}
.shot:hover{transform:translateY(-4px);border-color:var(--line)}
.shot img{width:100%;height:100%;object-fit:cover;display:block}
.shot-ph{
  position:absolute;inset:0;display:grid;place-items:center;text-align:center;
  font-size:14px;font-weight:600;letter-spacing:.3px;padding:16px;
}
.shot-ph.cool{background:linear-gradient(150deg,rgba(56,189,248,.16),rgba(2,132,199,.06));color:var(--cool-3)}
.shot-ph.warm{background:linear-gradient(150deg,rgba(255,138,61,.16),rgba(226,101,15,.06));color:var(--warm-2)}
.shot-ph::after{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(rgba(255,255,255,.045) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.045) 1px,transparent 1px);
  background-size:26px 26px;
}
.gallery-alt{
  display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:16px;
  margin-top:24px;color:var(--muted);font-size:15px;text-align:center;
}
.gallery-note{
  margin-top:22px;padding:28px;border-radius:var(--r-lg);text-align:center;
  border:1px dashed var(--line);background:rgba(56,189,248,.04);
}
.gallery-note h3{font-size:19px;margin-bottom:8px}
.gallery-note p{color:var(--muted);max-width:56ch;margin:0 auto 18px;font-size:15px}

/* ---------- neden biz ---------- */
.why-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.why{
  padding:28px 24px;border-radius:var(--r-lg);position:relative;
  background:linear-gradient(170deg,var(--surface),var(--bg-2));
  border:1px solid var(--line-soft);
  transition:transform .45s var(--ease),border-color .35s;
}
.why:hover{transform:translateY(-5px);border-color:var(--line)}
.why-num{
  font-family:Sora,sans-serif;font-size:13px;font-weight:700;letter-spacing:1px;
  background:var(--grad-cool);-webkit-background-clip:text;background-clip:text;color:transparent;
}
.why h3{font-size:18px;margin:12px 0 9px}
.why p{color:var(--muted);font-size:14.5px}
.chip{
  display:inline-block;margin-top:16px;padding:5px 12px;border-radius:999px;
  font-size:12px;font-weight:600;border:1px solid var(--line-soft);
}
.chip.cool{color:var(--cool-3);background:rgba(56,189,248,.09)}
.chip.warm{color:var(--warm-2);background:rgba(255,138,61,.09)}

/* ---------- süreç ---------- */
.steps{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;counter-reset:s}
.step{
  position:relative;padding:30px 24px 26px;border-radius:var(--r-lg);
  background:var(--surface);border:1px solid var(--line-soft);
  transition:transform .45s var(--ease),border-color .35s;
}
.step:not(:last-child)::after{
  content:"";position:absolute;top:52px;right:-13px;width:26px;height:1px;
  background:linear-gradient(90deg,var(--line),transparent);
}
.step:hover{transform:translateY(-5px);border-color:var(--line)}
.step-no{
  width:44px;height:44px;border-radius:14px;display:grid;place-items:center;
  font-family:Sora,sans-serif;font-weight:700;font-size:17px;color:#04121c;
  background:var(--grad-cool);box-shadow:var(--shadow-cool);margin-bottom:16px;
}
.step:nth-child(4) .step-no{background:var(--grad-warm);box-shadow:var(--shadow-warm)}
.step h3{font-size:18px;margin-bottom:8px}
.step p{color:var(--muted);font-size:14.5px}

/* ---------- hakkımızda ---------- */
.about{display:grid;grid-template-columns:1.1fr .9fr;gap:48px;align-items:center}
.about-copy h2{font-size:clamp(26px,3.2vw,38px);letter-spacing:-.8px;margin:0 0 18px}
.about-copy p{color:var(--muted);margin-bottom:14px;font-size:16px}
.about-stats{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.stat{
  padding:24px 20px;border-radius:var(--r-md);text-align:center;
  background:linear-gradient(170deg,var(--surface-2),var(--bg-2));border:1px solid var(--line-soft);
}
.stat b{display:block;font-family:Sora,sans-serif;font-size:23px;font-weight:600;letter-spacing:-.4px}
.stat em{font-style:normal;background:var(--grad-warm);-webkit-background-clip:text;background-clip:text;color:transparent}
.stat span{display:block;margin-top:6px;font-size:13px;color:var(--muted-2)}
.stat:nth-child(1) b,.stat:nth-child(3) b{background:var(--grad-cool);-webkit-background-clip:text;background-clip:text;color:transparent}

/* ---------- S.S.S. ---------- */
.faq{display:grid;gap:12px;max-width:880px}
.qa{
  border-radius:var(--r-md);border:1px solid var(--line-soft);
  background:var(--surface);overflow:hidden;transition:border-color .3s,background .3s;
}
.qa[open]{border-color:var(--line);background:var(--surface-2)}
.qa summary{
  list-style:none;cursor:pointer;padding:20px 56px 20px 22px;position:relative;
  font-family:Sora,sans-serif;font-weight:500;font-size:16.5px;
}
.qa summary::-webkit-details-marker{display:none}
.qa summary::after{
  content:"";position:absolute;right:22px;top:50%;width:11px;height:11px;
  border-right:2px solid var(--cool);border-bottom:2px solid var(--cool);
  translate:0 -70%;rotate:45deg;transition:rotate .3s var(--ease),translate .3s var(--ease);
}
.qa[open] summary::after{rotate:225deg;translate:0 -20%}
.qa-body{padding:0 22px 22px}
.qa-body p{color:var(--muted);font-size:15.5px}

/* ---------- CTA ---------- */
.cta{padding:86px 0;position:relative;overflow:hidden;background:var(--bg-2);border-block:1px solid var(--line-soft)}
.cta::before{
  content:"";position:absolute;inset:0;
  background:radial-gradient(50% 80% at 30% 50%,rgba(56,189,248,.15),transparent 70%),radial-gradient(45% 70% at 75% 50%,rgba(255,138,61,.13),transparent 70%);
}
.cta-inner{position:relative;text-align:center}
.cta-inner h2{font-size:clamp(27px,3.6vw,44px);letter-spacing:-1px;margin-bottom:14px}
.cta-inner p{color:var(--muted);font-size:17px;max-width:52ch;margin-inline:auto}
.cta-inner .hero-actions{justify-content:center}

/* ---------- iletişim ---------- */
.contact{display:grid;grid-template-columns:1.05fr .95fr;gap:32px;align-items:start}
.contact-list{display:grid;gap:12px}
.contact-list li{
  display:flex;align-items:center;gap:16px;padding:18px 20px;border-radius:var(--r-md);
  background:var(--surface);border:1px solid var(--line-soft);transition:border-color .3s,translate .35s var(--ease);
}
.contact-list li:hover{border-color:var(--line);translate:3px 0}
/* SATIR SATIR BELİRME (2026-09-26, ölçüldü)
   Liste tek parça .imza-gel iken telefonda (375x812, işlemci 4x kısık) ekrana
   girdiği karede bütün liste bir anda çiziliyordu: y~13838'de 67-78 ms (5 koşu).
   .imza-gel satırlara taşındı -> her satır kendi girişinde çiziliyor: kare yok
   (3/3, en kötü 50 ms). Üzerine gelme kayması bu yüzden transform değil
   translate: .imza-gel'in transform'u ile çakışmasın; geçişler birleştirildi. */
.js .contact-list li.imza-gel{
  transition:opacity var(--imza-hiz) var(--imza-ease),transform var(--imza-hiz) var(--imza-ease),
             border-color .3s,translate .35s var(--ease);
}
.ci{width:44px;height:44px;border-radius:13px;display:grid;place-items:center;flex:none;border:1px solid var(--line-soft)}
.ci svg{width:21px;height:21px;fill:currentColor}
.ci.cool{background:rgba(56,189,248,.1);color:var(--cool-3)}
.ci.warm{background:rgba(255,138,61,.1);color:var(--warm-2)}
.ci.wa{background:rgba(37,211,102,.1);color:var(--wa)}
.contact-list b{display:block;font-family:Sora,sans-serif;font-size:13px;font-weight:600;color:var(--muted-2);letter-spacing:.4px}
.contact-list a,.contact-list div>span{font-size:16px;font-weight:500}
.contact-list a:hover{color:var(--cool-3)}

.contact-box{
  padding:32px 28px;border-radius:var(--r-lg);
  background:linear-gradient(165deg,var(--surface-2),var(--bg-2));border:1px solid var(--line);
  box-shadow:var(--shadow);
}
.contact-box h3{font-size:21px;margin-bottom:10px}
.contact-box p{color:var(--muted);font-size:15px}
.box-actions{display:flex;flex-direction:column;gap:10px;margin-top:22px}
.box-actions .btn{width:100%}

/* ---------- footer ---------- */
.site-footer{background:var(--bg-2);border-top:1px solid var(--line-soft);padding-top:56px}
.footer-inner{display:grid;grid-template-columns:1.6fr 1fr 1fr;gap:36px;padding-bottom:38px}
.footer-brand .brand-mark{margin-bottom:12px}
.footer-brand .brand-name{display:block;font-size:17px;margin-bottom:12px}
.footer-brand p{color:var(--muted-2);font-size:14.5px;max-width:42ch}
.footer-col h4{font-family:Sora,sans-serif;font-size:14px;letter-spacing:.6px;margin-bottom:14px}
.footer-col a{display:block;padding:6px 0;color:var(--muted);font-size:14.5px;transition:color .25s}
.footer-col a:hover{color:var(--cool-3)}
.footer-bottom{
  display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between;align-items:center;
  padding:20px 0 26px;border-top:1px solid var(--line-soft);color:var(--muted-2);font-size:13.5px;
}
.footer-slogan{color:var(--cool-3)}

/* ---------- sabit düğmeler ---------- */
.fab{
  position:fixed;right:20px;z-index:55;width:52px;height:52px;border-radius:50%;
  display:grid;place-items:center;box-shadow:var(--shadow);
  transition:transform .35s var(--ease),opacity .3s;
}
.fab:hover{transform:translateY(-3px) scale(1.05)}
.fab svg{width:25px;height:25px;fill:currentColor}
.fab-wa{bottom:20px;background:var(--wa);color:#06210f}
.fab-top{bottom:84px;background:var(--surface-3);border:1px solid var(--line);color:var(--cool-3);width:46px;height:46px}
.fab-top[hidden]{display:none}

/* ---------- lightbox ---------- */
.lightbox{
  position:fixed;inset:0;z-index:90;display:grid;place-items:center;padding:24px;
  background:rgba(4,7,11,.9);backdrop-filter:blur(6px);animation:fade .25s;
}
.lightbox[hidden]{display:none}
.lb-inner{max-width:min(92vw,900px);width:100%;text-align:center}
.lb-body{border-radius:var(--r-lg);overflow:hidden;border:1px solid var(--line);aspect-ratio:4/3;display:grid;place-items:center;background:var(--surface)}
.lb-body img{width:100%;height:100%;object-fit:contain}
.lb-body .shot-ph{position:relative;font-size:22px}
.lb-cap{margin-top:16px;color:var(--muted);font-size:15px}
.lb-close{
  position:absolute;top:20px;right:20px;width:44px;height:44px;border-radius:12px;cursor:pointer;
  background:rgba(255,255,255,.06);border:1px solid var(--line-soft);color:var(--text);display:grid;place-items:center;
}
.lb-close svg{width:22px;height:22px;fill:none}

/* Açılış/belirme animasyonları imza/imza.css içine taşındı (.imza-gel). */

/* ---------- duyarlı ---------- */
@media (max-width:1080px){
  .cards{grid-template-columns:repeat(2,1fr)}
  .why-grid,.steps{grid-template-columns:repeat(2,1fr)}
  .step:nth-child(2)::after{display:none}
  .footer-inner{grid-template-columns:1fr 1fr}
  .footer-brand{grid-column:1/-1}
}
@media (max-width:900px){
  .hero-inner{grid-template-columns:1fr;gap:44px}
  .hero-art{order:-1;min-height:320px}
  .art-card{max-width:340px}
  .about{grid-template-columns:1fr;gap:32px}
  .contact{grid-template-columns:1fr}
  .gallery{grid-template-columns:repeat(2,1fr)}
  .phone-link span{display:none}
  .phone-link{padding:9px}
}
@media (max-width:620px){
  :root{--header-h:66px}
  .section{padding:70px 0}
  .cards,.why-grid,.steps,.gallery,.about-stats{grid-template-columns:1fr}
  .step::after{display:none}
  .hero{padding-top:calc(var(--header-h) + 44px)}
  .hero-actions .btn{flex:1 1 100%}
  /* dar ekranda üst bar sıkışmasın: WhatsApp zaten sabit düğme olarak duruyor */
  .header-inner{gap:12px}
  .header-cta{gap:8px}
  .btn-wa.btn-sm{display:none}
  .brand{flex:0 1 auto;min-width:0}
  .brand-text{min-width:0}
  .brand-name{font-size:14.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  .brand-sub{display:none}
  .footer-inner{grid-template-columns:1fr;gap:26px}
  .footer-bottom{flex-direction:column;align-items:flex-start}
  .fab{right:14px}
  .fab-wa{bottom:14px}
  .fab-top{bottom:76px}
}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;animation-iteration-count:1 !important;transition-duration:.01ms !important}
  html{scroll-behavior:auto}
}

/* ==========================================================
   ARAÇLAR: termostat + BTU hesaplayıcı  (#hesapla)
   --isi: 0 = soğuk/mavi, 1 = sıcak/turuncu. JS günceller.
   ========================================================== */
#hesapla{position:relative;overflow:hidden;isolation:isolate;
  background:linear-gradient(180deg,var(--bg),#0a1017 45%,var(--bg));
  border-block:1px solid var(--line-soft)}
.zerre-tuval{position:absolute;inset:0;width:100%;height:100%;z-index:-1;opacity:.65;pointer-events:none}
#hesapla::before{
  content:"";position:absolute;inset:0;z-index:-1;pointer-events:none;
  background:radial-gradient(60% 55% at 28% 40%,rgba(56,189,248,calc(.16 * (1 - var(--isi)))),transparent 70%),
             radial-gradient(55% 50% at 74% 55%,rgba(255,138,61,calc(.18 * var(--isi))),transparent 72%);
  transition:background .4s linear;
}

.araclar{display:grid;grid-template-columns:.92fr 1.08fr;gap:24px;align-items:start}

/* ---- termostat ---- */
.termostat{
  padding:30px 26px 26px;border-radius:var(--r-lg);text-align:center;
  background:linear-gradient(170deg,var(--surface-2),var(--bg-2));
  border:1px solid var(--line-soft);box-shadow:var(--shadow);
}
.termo-kadran{
  position:relative;width:min(100%,260px);margin:0 auto;aspect-ratio:1;cursor:grab;
  touch-action:none;outline:none;border-radius:50%;
}
.termo-kadran:active{cursor:grabbing}
.termo-kadran:focus-visible{box-shadow:0 0 0 3px rgba(56,189,248,.45)}
.termo-kadran svg{width:100%;height:100%;display:block}
/* Kadran KENDI katmaninda (2026-09-30, telefon taklidi 393x873 dpr 2.75 cpu 4x):
   drop-shadow'lu yay degistikce golgeli+gradyanli buyuk kart (termostat/btu)
   bastan ciziliyordu -> y~4060 ve ~4345'te 56-94 ms kare, her kosuda.
   Katmanla 3 kosuda >50 ms kare 2 -> 0, >33 ms 6-8 -> 3-5. Gorunum ayni. */
.termostat svg{will-change:transform}
.termo-yol{stroke:rgba(255,255,255,.07)}
.termo-dolu{
  stroke:var(--termo-renk,var(--cool));
  filter:drop-shadow(0 0 10px var(--termo-golge,rgba(56,189,248,.55)));
  transition:stroke .25s linear,filter .25s linear;
}
.termo-tik line{stroke:rgba(255,255,255,.16);stroke-width:2;stroke-linecap:round}
.termo-tutamac{
  position:absolute;width:22px;height:22px;border-radius:50%;
  background:var(--termo-renk,var(--cool));border:3px solid var(--bg-2);
  box-shadow:0 0 16px var(--termo-golge,rgba(56,189,248,.6));
  translate:-50% -50%;pointer-events:none;
  transition:background .25s linear,box-shadow .25s linear;
}
.termo-orta{position:absolute;inset:0;display:grid;place-content:center;gap:2px;pointer-events:none}
.termo-orta b{
  font-family:Sora,sans-serif;font-size:44px;font-weight:600;letter-spacing:-1.5px;line-height:1;
  color:var(--termo-renk,var(--cool));transition:color .25s linear;
}
.termo-orta b i{font-style:normal;font-size:26px;vertical-align:super;opacity:.8}
.termo-orta span{font-size:12.5px;letter-spacing:1.4px;text-transform:uppercase;color:var(--muted-2)}
.termo-alt{display:flex;align-items:center;justify-content:space-between;gap:10px;margin-top:16px;flex-wrap:wrap}
.termo-uc{font-size:12px;font-weight:600;padding:5px 11px;border-radius:999px;border:1px solid var(--line-soft)}
.termo-uc.cool{color:var(--cool-3);background:rgba(56,189,248,.08)}
.termo-uc.warm{color:var(--warm-2);background:rgba(255,138,61,.08)}
.termo-ipucu{font-size:12px;color:var(--muted-2)}
.termo-metin{margin-top:14px;color:var(--muted);font-size:14.5px;min-height:44px}

/* ---- form alanları (ortak) ---- */
.alan{display:block;margin-bottom:16px}
.alan-bas{display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:13px;font-weight:600;color:var(--muted);margin-bottom:8px}
.alan-bas b{font-family:Sora,sans-serif;color:var(--cool-3);font-size:14px}
.alan-bas i{color:var(--warm);font-style:normal}
.alan input[type=text],.alan input[type=tel],.alan select,.alan textarea,.secim select{
  width:100%;padding:13px 15px;border-radius:14px;
  background:var(--bg-3);border:1px solid var(--line-soft);color:var(--text);
  font-family:inherit;font-size:15px;transition:border-color .25s,background .25s;
}
.alan textarea{resize:none;overflow-y:hidden;min-height:84px} /* yazdıkça uzar: script.js notBoyu */
.alan input:focus,.alan select:focus,.alan textarea:focus,.secim select:focus{
  outline:none;border-color:var(--cool);background:var(--surface);
}
.alan input.hatali{border-color:var(--warm);background:rgba(255,138,61,.06)}

/* menzil (range) çubuğu */
input[type=range]{
  -webkit-appearance:none;appearance:none;width:100%;height:6px;border-radius:999px;
  background:linear-gradient(90deg,var(--cool) var(--dolu,40%),rgba(255,255,255,.09) var(--dolu,40%));
  cursor:pointer;
}
input[type=range]::-webkit-slider-thumb{
  -webkit-appearance:none;width:20px;height:20px;border-radius:50%;
  background:var(--cool-3);border:3px solid var(--bg-2);box-shadow:0 0 12px rgba(56,189,248,.55);
}
input[type=range]::-moz-range-thumb{
  width:20px;height:20px;border-radius:50%;border:3px solid var(--bg-2);
  background:var(--cool-3);box-shadow:0 0 12px rgba(56,189,248,.55);
}

/* ---- BTU kutusu ---- */
.btu{
  padding:30px 28px;border-radius:var(--r-lg);
  background:linear-gradient(165deg,var(--surface),var(--bg-2));
  border:1px solid var(--line);box-shadow:var(--shadow);
}
.btu h3{font-size:21px;margin-bottom:8px}
.btu-not{color:var(--muted);font-size:14.5px;margin-bottom:22px}
.alan-sat{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-bottom:16px}
.secim{display:block}
.secim>span{display:block;font-size:13px;font-weight:600;color:var(--muted);margin-bottom:8px}
.onay{display:flex;align-items:center;gap:10px;font-size:14.5px;color:var(--muted);cursor:pointer;margin-bottom:20px}
.onay input{width:18px;height:18px;accent-color:var(--cool);cursor:pointer;flex:none}
.btu-sonuc{
  display:grid;grid-template-columns:1fr 1fr;gap:14px;padding:20px;border-radius:var(--r-md);
  background:var(--bg-3);border:1px solid var(--line);margin-bottom:16px;
}
.btu-etiket{display:block;font-size:12px;letter-spacing:.6px;text-transform:uppercase;color:var(--muted-2);margin-bottom:6px}
.btu-sonuc b{font-family:Sora,sans-serif;font-size:25px;font-weight:600;letter-spacing:-.6px;
  background:var(--grad-cool);-webkit-background-clip:text;background-clip:text;color:transparent}
.btu-oneri b{background:var(--grad-warm);-webkit-background-clip:text;background-clip:text;color:transparent}
.btu .btn{width:100%}
.btu-uyari{margin-top:14px;font-size:12.5px;color:var(--muted-2);line-height:1.5}

/* ==========================================================
   SERVİS TALEP FORMU (#talep)
   ========================================================== */
.talep{
  padding:32px 30px;border-radius:26px;max-width:880px;margin-inline:auto;
  background:linear-gradient(165deg,var(--surface),var(--bg-2));
  border:1px solid var(--line);box-shadow:var(--shadow);
}
.talep-satir{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.talep-onizle{margin:6px 0 20px}
/* KESİKLİ ÇERÇEVE SVG İLE (2026-09-26, ölçüldü)
   "border:1px dashed" yuvarlak köşede her karede yol olarak çiziliyor;
   telefonda (375x812, işlemci 4x kısık) form ekrana girerken textarea
   tutamacıyla birlikte 217-222 ms'lik tek kare donması yapıyordu.
     dashed + tutamaç   217-222 ms   (3 koşu)
     tutamaç kalktı     100-122 ms
     + SVG çerçeve       72 ms (o bölgede donma yok)
   Görünüm aynı: 1px, --line rengi (#38bdf8 %16), 3/3 kesik, 18px köşe.
   Rengi değiştirirsen aşağıdaki SVG'deki stroke'u da değiştir. */
.talep-onizle pre{
  margin:0;padding:16px 18px;border-radius:18px;white-space:pre-wrap;word-break:break-word;
  border:1px solid transparent;color:var(--muted);
  background:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg'><rect width='100%' height='100%' rx='18' ry='18' fill='none' stroke='rgb(56,189,248)' stroke-opacity='.16' stroke-width='2' stroke-dasharray='3 3'/></svg>") 0 0/100% 100% no-repeat,var(--bg-3);
  font-family:inherit;font-size:14px;line-height:1.6;max-height:190px;overflow:auto;
}
.talep-alt{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:12px}
.talep-hata{font-size:13.5px;color:var(--warm-2);font-weight:600}
.talep-hata.ok{color:var(--wa)}

/* ==========================================================
   duyarlı — yeni bölümler
   ========================================================== */
@media (max-width:1080px){
  .araclar{grid-template-columns:1fr;gap:20px}
  .termo-kadran{width:min(100%,240px)}
}
@media (max-width:620px){
  .alan-sat,.btu-sonuc,.talep-satir{grid-template-columns:1fr}
  .talep{padding:24px 20px}
  .btu{padding:24px 20px}
  .termostat{padding:24px 18px 20px}
  .termo-alt{justify-content:center}
  .termo-ipucu{order:3;width:100%;text-align:center}
  .talep-alt .btn{width:100%}
}


/* ---- açılış perdesi: logo blokları sırayla yükselir ---- */
.perde-logo{width:104px;height:auto}
.perde-logo [data-blok]{
  transform-box:fill-box;transform-origin:bottom center;
  transform:scaleY(0);
  animation:blok-yuksel .62s var(--ease) forwards;
}
.perde-logo [data-blok="1"]{animation-delay:.05s}
.perde-logo [data-blok="2"]{animation-delay:.14s}
.perde-logo [data-blok="3"]{animation-delay:.23s}
.perde-logo [data-blok="4"]{animation-delay:.32s}
.perde-logo [data-blok="5"]{animation-delay:.41s}
@keyframes blok-yuksel{to{transform:scaleY(1)}}

/* ==========================================================
   CİHAZ KARTLARI — klima / kombi ikilisi (hizmetler üstü)
   ========================================================== */
.cihazlar{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-bottom:26px}
.cihaz{
  position:relative;display:block;overflow:hidden;border-radius:var(--r-lg);
  border:1px solid var(--line-soft);background:var(--surface);
  aspect-ratio:16/9;
  transition:transform .5s var(--ease),border-color .35s,box-shadow .5s var(--ease);
}
.cihaz img{
  width:100%;height:100%;object-fit:cover;display:block;
  transform:scale(1.02);
  transition:transform .8s var(--ease),filter .5s;
  filter:saturate(.95);
}
.cihaz::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(180deg,rgba(7,11,16,0) 35%,rgba(7,11,16,.55) 62%,rgba(7,11,16,.92) 100%);
}
.cihaz:hover{transform:translateY(-5px);border-color:var(--line);box-shadow:var(--shadow)}
.cihaz:hover img{transform:scale(1.07);filter:saturate(1.05)}
.cihaz-ic{
  position:absolute;left:0;right:0;bottom:0;z-index:2;
  display:flex;flex-direction:column;gap:5px;padding:22px 24px;
}
.cihaz-etiket{
  align-self:flex-start;font-size:11.5px;font-weight:700;letter-spacing:1.3px;text-transform:uppercase;
  padding:4px 10px;border-radius:999px;border:1px solid var(--line-soft);backdrop-filter:blur(6px);
}
.cihaz-etiket.cool{color:var(--cool-3);background:rgba(56,189,248,.14)}
.cihaz-etiket.warm{color:var(--warm-2);background:rgba(255,138,61,.14)}
.cihaz-ic strong{font-family:Sora,sans-serif;font-size:26px;font-weight:600;letter-spacing:-.5px;line-height:1.1}
.cihaz-alt{font-size:13.5px;color:var(--muted)}

@media (max-width:900px){
  .cihazlar{grid-template-columns:1fr}
  .cihaz{aspect-ratio:16/10}
}
@media (max-width:620px){
  .cihaz{aspect-ratio:4/3}
  .cihaz-ic{padding:18px 18px}
  .cihaz-ic strong{font-size:23px}
}


/* ==========================================================
   MOBİL / DOKUNMATİK OPTİMİZASYON
   İmleç süsleri dokunmatikte zaten bağlanmıyor; burada onların
   tarayıcıya bindirdiği yükü de kaldırıyoruz.
   ========================================================== */
@media (pointer:coarse){
  .imza-tilt,.imza-magnet{will-change:auto}
  .imza-spot::after{display:none}
  /* sürekli blur hesabı telefonda pahalı — opak zemine geçiyoruz */
  .site-header{backdrop-filter:none;-webkit-backdrop-filter:none;background:rgba(7,11,16,.94)}
  .site-header.scrolled{background:rgba(7,11,16,.97)}
  .cihaz-etiket{backdrop-filter:none}
  /* hover ile büyüyen fotoğraflar dokunmatikte gereksiz */
  .cihaz img{transform:none}
  .cihaz:hover img{transform:none}
}

/* dokunma hedefleri en az 44px */
@media (max-width:900px){
  .mm-nav a{padding:15px 14px}
  .contact-list li{padding:16px 18px}
  .qa summary{padding:18px 52px 18px 20px}
}


/* servis talebi bölümü ortalanmış dursun */
#talep .section-head{margin-inline:auto;text-align:center}
#talep .section-head p{margin-inline:auto}
.talep-onizle .alan-bas{justify-content:center}

/* ============================================================
   TELEFONDA BACKDROP-FILTER KAPALI (2026-09-11, ölçüldü)

   .site-header sabit (position:fixed) ve üzerinde blur(14px) bir
   backdrop-filter vardı. Sabit başlığın ARKASINDAKİ içerik kaydırırken
   her karede değiştiği için bulanıklık her karede yeniden hesaplanıyor;
   telefonda en pahalı işlerden biri bu.

   Ölçüm (375x812, işlemci 6 kat kısık, kaydırırken):
     backdrop-filter açık   71.6 fps · >33ms 17 · en kötü 139 ms
     backdrop-filter kapalı 78.2 fps · >33ms 11 · en kötü  61 ms

   NOT: bu makine headless Chrome ile ölçüyor ve backdrop-filter'ın
   bedelini gerçek bir telefon GPU'suna göre AZ gösterir; sahadaki
   kazanç bundan büyük olmalı.

   Görünüm korunuyor: bulanıklık yerine biraz daha opak zemin.
   Masaüstünde hiçbir şey değişmiyor.
   ============================================================ */
@media (max-width:860px){
  .site-header,.art-tag,.chip{
    backdrop-filter:none !important;
    -webkit-backdrop-filter:none !important;
  }
  .site-header{background:rgba(7,11,16,.94)}
}

/* TELEFONDA DAHA KISA GÖLGE (2026-09-26, ölçüldü)
   --shadow'un 60px bulanıklığı büyük kutularda (talep formu 1115px,
   iletişim kutusu) ekrana girerken tek karede pahalı çiziliyordu.
   375x812, işlemci 4x kısık, form ekrana girerken en kötü kare:
     60px gölge   72-83 ms  (3 koşu)      30px gölge   ≤50 ms (7/7 koşu)
   Koyu zeminde fark çok az; masaüstünde gölge aynen duruyor. */
@media (max-width:860px){
  :root{--shadow:0 16px 30px -16px rgba(0,0,0,.75)}
}

/* ============================================================
   TELEFONDA OKUNABİLİRLİK VE DOKUNMA (2026-09-12)

   Arda: "mobilden bakanlar için de güzel bir şekilde boyutlarını ayarla."

   ÖLÇÜLDÜ (arac/mobil-olcu.cjs, 375x812) — 17 hedef 44px altındaydı:
     a.brand          198x40      button#burger   42x42
     a.phone-link      37x37      mm-nav bağları 335x36
     input#btu-alan   293x6   <-- kaydırma çubuğu 6px: parmakla tutulmuyor
     input#btu-yogun   18x18
     footer bağları   153x22 / 131x21 / 104x21
     cihaz etiketleri 11.5px

   PC'YE DOKUNULMUYOR: hepsi 900px altında, masaüstü ölçüleri aynen.
   ============================================================ */
@media (max-width:900px){
  .cihaz-etiket{font-size:12.5px}

  .brand{min-height:44px}
  .phone-link{min-width:44px; min-height:44px}
  .burger{min-width:44px; min-height:44px}

  /* Menü ve alt bilgi bağları: en çok basılan yerler. */
  .mm-nav a{min-height:44px; display:flex; align-items:center}
  .footer-col a{display:inline-block; padding:11px 0; min-height:44px}
  /* Iletisim listesi: ara, WhatsApp yaz, Instagram. Sitenin en onemli
     dokunma hedefleri 21px yuksekti. */
  .contact-list a{display:inline-flex; align-items:center; min-height:44px}

  /* BTU hesaplayıcı telefonda parmakla kullanılıyor: 6px'lik çubuk
     tutulamıyordu. Çubuk kalınlaşıyor, tutamaç 28px'e çıkıyor. */
  input[type="range"]{
    height:44px;                 /* dokunma alanı */
    background:transparent;
  }
  input[type="range"]::-webkit-slider-runnable-track{ height:8px; border-radius:999px }
  input[type="range"]::-webkit-slider-thumb{
    width:28px; height:28px; margin-top:-10px; border-radius:50%;
  }
  input[type="checkbox"]{ width:24px; height:24px }
  /* Onay kutusunun kendisi 24px ama BASILAN yer butun satir:
     etiket sarmaliyor. Satiri 44px'e cikariyoruz ki parmak issiz
     kalmasin. */
  label.onay{ min-height:44px; display:flex; align-items:center; gap:10px }
}