/* ==========================================================================
   Bakan Doğalgaz — Design tokens
   Display: Space Grotesk (technical, geometric — pipe/schematic character)
   Body:    Inter
   Utility: JetBrains Mono (stats, gauge readouts, phone numbers)
   ========================================================================== */
    html, body {
    max-width: 100%;
    overflow-x: hidden;
}
:root{
  --ink:        #0B1E33;
  --ink-2:      #12294A;
  --ink-3:      #1B3A63;
  --paper:      #F5F7FA;
  --paper-2:    #FFFFFF;
  --slate:      #1C2733;
  --muted:      #5B6B7C;
  --line:       #E1E7EE;
  --flame-blue: #2F8FFF;
  --flame-blue-dark: #1868D6;
  --flame-orange: #FF7A33;
  --flame-orange-dark: #E85F17;
  --success:    #1F9D6F;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;

  --shadow-sm: 0 2px 8px rgba(11,30,51,0.06);
  --shadow-md: 0 12px 32px rgba(11,30,51,0.12);
  --shadow-lg: 0 24px 60px rgba(11,30,51,0.18);

  --container: 1180px;
}

*,*::before,*::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior: auto; }
  *,*::before,*::after{ animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; scroll-behavior: auto !important; }
}

body{
  margin:0;
  font-family:'Inter',system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  color:var(--slate);
  background:var(--paper);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}

h1,h2,h3,h4{
  font-family:'Space Grotesk',system-ui,sans-serif;
  color:var(--ink);
  line-height:1.15;
  margin:0 0 .5em;
  letter-spacing:-0.01em;
}

.mono{ font-family:'JetBrains Mono',ui-monospace,monospace; }

a{ color:inherit; text-decoration:none; }
img{ max-width:100%; display:block; }
button{ font-family:inherit; cursor:pointer; }
ul{ margin:0; padding:0; list-style:none; }

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 24px;
}

.section{ padding:96px 0; }
.section--tight{ padding:64px 0; }
.section--ink{ background:var(--ink); color:#E9EEF5; }
.section--ink h2, .section--ink h3{ color:#fff; }
.section--alt{ background:var(--paper-2); }

.eyebrow{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-family:'JetBrains Mono',monospace;
  font-size:12.5px;
  letter-spacing:0.08em;
  text-transform:uppercase;
  color:var(--flame-orange-dark);
  font-weight:600;
  margin-bottom:14px;
}
.eyebrow::before{
  content:"";
  width:18px; height:2px;
  background:var(--flame-orange);
  display:inline-block;
}
.section--ink .eyebrow{ color:#FFB088; }

.section-head{ max-width:640px; margin-bottom:48px; }
.section-head p{ color:var(--muted); font-size:17px; }
.section--ink .section-head p{ color:#B9C6D6; }

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding:15px 26px;
  border-radius:999px;
  font-weight:600;
  font-size:15px;
  border:1.5px solid transparent;
  transition:transform .18s ease, box-shadow .18s ease, background .18s ease, color .18s ease;
  white-space:nowrap;
}
.btn:active{ transform:scale(0.97); }
.btn--primary{
  background:linear-gradient(135deg,var(--flame-orange),var(--flame-orange-dark));
  color:#fff;
  box-shadow:0 10px 24px rgba(255,122,51,0.35);
}
.btn--primary:hover{ box-shadow:0 14px 32px rgba(255,122,51,0.45); transform:translateY(-1px); }
.btn--ghost{
  background:transparent;
  border-color:rgba(255,255,255,0.35);
  color:#fff;
}
.btn--ghost:hover{ background:rgba(255,255,255,0.1); }
.btn--dark{
  background:var(--ink);
  color:#fff;
}
.btn--dark:hover{ background:var(--ink-2); }
.btn--sm{ padding:10px 18px; font-size:13.5px; }

/* ---------- Header ---------- */
.site-header{
  position:sticky; top:0; z-index:100;
  background:rgba(245,247,250,0.85);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.site-header .container{
  display:flex; align-items:center; justify-content:space-between;
  height:78px;
}
.logo{
  display:flex; align-items:center; gap:10px;
  font-family:'Space Grotesk',sans-serif;
  font-weight:700; font-size:20px;
  color:var(--ink);
}
.logo .mark{
  width:36px;height:36px;flex:none;
}
.logo .tag{ display:block; font-family:'JetBrains Mono',monospace; font-weight:500; font-size:10.5px; letter-spacing:.06em; color:var(--muted); text-transform:uppercase; }

.main-nav{ display:flex; align-items:center; gap:32px; }
.main-nav a{
  font-size:14.5px; font-weight:500; color:var(--slate);
  position:relative; padding:4px 0;
}
.main-nav a::after{
  content:""; position:absolute; left:0; bottom:-2px; height:2px; width:0;
  background:var(--flame-orange); transition:width .2s ease;
}
.main-nav a:hover::after{ width:100%; }

.header-actions{ display:flex; align-items:center; gap:14px; }
.header-phone{
  display:flex; align-items:center; gap:8px;
  font-family:'JetBrains Mono',monospace;
  font-weight:600; font-size:14.5px;
}
.header-phone svg{ width:18px;height:18px; color:var(--flame-orange-dark); }

.nav-toggle{
  display:none; background:none; border:none; padding:8px;
}
.nav-toggle svg{ width:26px; height:26px; }

@media (max-width: 920px){
  .main-nav{
    position:fixed; inset:78px 0 0 0; height:calc(100vh - 78px);
    background:var(--paper-2);
    flex-direction:column; justify-content:flex-start; align-items:flex-start;
    padding:32px 24px; gap:22px;
    transform:translateX(100%);
    transition:transform .28s ease;
    overflow-y:auto;
  }
  .main-nav.is-open{ transform:translateX(0); }
  .main-nav a{ font-size:19px; }
  .header-phone span{ display:none; }
  .nav-toggle{ display:inline-flex; }
}

/* ---------- Hero ---------- */
.hero{
  position:relative;
  background:radial-gradient(1100px 620px at 78% -10%, #163a63 0%, var(--ink) 55%);
  color:#fff;
  overflow:hidden;
  padding:88px 0 0;
}
.hero .container{
  display:grid; grid-template-columns:1.05fr 0.95fr; gap:56px; align-items:center;
}
.hero-copy .eyebrow{ color:#FFB088; }
.hero-copy h1{
  font-size:clamp(34px,4.4vw,54px);
  color:#fff;
  max-width:16ch;
}
.hero-copy p{
  font-size:18px; color:#C6D3E3; max-width:46ch; margin-bottom:32px;
}
.hero-cta{ display:flex; gap:14px; flex-wrap:wrap; margin-bottom:44px; }

.hero-stats{
  display:flex; gap:0;
  border-top:1px solid rgba(255,255,255,0.14);
  padding-top:28px;
}
.hero-stat{ flex:1; padding-right:20px; }
.hero-stat .value{
  font-family:'JetBrains Mono',monospace; font-size:26px; font-weight:700; color:#fff;
  display:block;
}
.hero-stat .label{ font-size:12.5px; color:#93A6BC; margin-top:4px; }

/* Gauge — signature element */
.hero-visual{ position:relative; display:flex; justify-content:center; align-items:center; }
.gauge-wrap{ position:relative; width:100%; max-width:400px; aspect-ratio:1/1; }
.gauge-ring{
  position:absolute; inset:0; border-radius:50%;
  background:conic-gradient(from -130deg, var(--flame-blue) 0deg, var(--flame-orange) 260deg, transparent 260deg);
  padding:10px;
  -webkit-mask:radial-gradient(farthest-side, transparent calc(100% - 10px), #000 calc(100% - 9px));
  mask:radial-gradient(farthest-side, transparent calc(100% - 10px), #000 calc(100% - 9px));
}
.gauge-face{
  position:absolute; inset:22px; border-radius:50%;
  background:radial-gradient(circle at 32% 28%, #143459, #0B1E33 70%);
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.08), var(--shadow-lg);
  display:flex; flex-direction:column; align-items:center; justify-content:center;
}
.gauge-needle{
  position:absolute; left:50%; bottom:50%; width:3px; height:34%;
  background:linear-gradient(var(--flame-orange), transparent);
  transform-origin:bottom center;
  transform:rotate(38deg);
  border-radius:2px;
  animation: gaugeSettle 2.4s cubic-bezier(.2,.9,.25,1) both;
}
@keyframes gaugeSettle{
  0%{ transform:rotate(-140deg); }
  60%{ transform:rotate(52deg); }
  100%{ transform:rotate(38deg); }
}
.gauge-center{
  width:12px;height:12px;border-radius:50%;background:var(--flame-orange);
  position:absolute; left:50%; top:50%; transform:translate(-50%,-50%);
  box-shadow:0 0 0 4px rgba(255,122,51,0.2);
}
.gauge-readout{ text-align:center; margin-top:14px; }
.gauge-readout .num{ font-family:'JetBrains Mono',monospace; font-size:30px; font-weight:700; color:#fff; }
.gauge-readout .cap{ font-size:11.5px; letter-spacing:.08em; text-transform:uppercase; color:#8FA3B9; }

.gauge-tick{ position:absolute; width:2px; height:10px; background:rgba(255,255,255,0.35); left:50%; top:6px; transform-origin:1px 194px; }

@media (max-width: 920px){
  .hero .container{ grid-template-columns:1fr; }
  .hero-visual{ order:-1; padding-bottom:12px; }
  .gauge-wrap{ max-width:260px; }
  .hero-stats{ flex-wrap:wrap; gap:20px 0; }
  .hero-stat{ flex:1 1 45%; }
}

/* ---------- Pipe divider (structural device — reflects real pipe fittings) ---------- */
.pipe-divider{
  display:flex; align-items:center; gap:0; padding:0 0;
  color:var(--line);
}
.pipe-divider .container{ display:flex; align-items:center; }
.pipe-divider .line{ flex:1; height:2px; background:var(--line); }
.pipe-divider .joint{
  width:14px;height:14px;border-radius:50%;
  border:2px solid var(--line); background:var(--paper-2);
  flex:none;
}

/* ---------- Services ---------- */
.services-grid{
  display:grid; grid-template-columns:repeat(4,1fr); gap:22px;
}
@media (max-width:1080px){ .services-grid{ grid-template-columns:repeat(2,1fr); } }
@media (max-width:560px){ .services-grid{ grid-template-columns:1fr; } }

.service-card{
  background:var(--paper-2);
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  padding:28px 24px;
  transition:transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.service-card:hover{
  transform:translateY(-4px);
  box-shadow:var(--shadow-md);
  border-color:transparent;
}
.service-icon{
  width:48px;height:48px; border-radius:12px;
  background:linear-gradient(135deg,#EAF3FF,#F5F7FA);
  display:flex; align-items:center; justify-content:center;
  margin-bottom:18px;
}
.service-icon svg{ width:24px;height:24px; color:var(--flame-blue-dark); }
.service-card h3{ font-size:17.5px; margin-bottom:8px; }
.service-card p{ color:var(--muted); font-size:14.5px; margin:0; }

/* ---------- About ---------- */
.about-grid{
  display:grid; grid-template-columns:0.9fr 1.1fr; gap:64px; align-items:center;
}
@media (max-width:920px){ .about-grid{ grid-template-columns:1fr; gap:36px; } }
.about-highlights{ margin-top:26px; display:grid; gap:14px; }
.about-highlights li{
  display:flex; align-items:flex-start; gap:12px; font-size:15px; color:var(--slate);
}
.about-highlights svg{ width:20px;height:20px; flex:none; color:var(--success); margin-top:2px; }

.schematic{
  position:relative; background:var(--ink); border-radius:var(--radius-lg);
  aspect-ratio:4/3; overflow:hidden; box-shadow:var(--shadow-lg);
}
.schematic svg{ width:100%; height:100%; }

/* ---------- Process ---------- */
.process-list{
  display:grid; grid-template-columns:repeat(4,1fr); gap:0;
  position:relative;
}
@media (max-width:920px){ .process-list{ grid-template-columns:1fr; } }
.process-item{
  padding:0 26px 0 0; position:relative;
}
.process-item:not(:last-child){ border-right:1px dashed rgba(255,255,255,0.18); }
@media (max-width:920px){
  .process-item{ padding:0 0 26px 0; }
  .process-item:not(:last-child){ border-right:none; border-bottom:1px dashed rgba(255,255,255,0.18); padding-bottom:24px; margin-bottom:24px; }
}
.process-step-num{
  font-family:'JetBrains Mono',monospace; font-size:13px; color:#FFB088; margin-bottom:10px; display:block;
}
.process-item h3{ color:#fff; font-size:17px; margin-bottom:8px; }
.process-item p{ color:#B9C6D6; font-size:14.5px; }

/* ---------- Gallery ---------- */
.gallery-grid{
  display:grid; grid-template-columns:repeat(4,1fr); gap:14px;
}
@media (max-width:920px){ .gallery-grid{ grid-template-columns:repeat(2,1fr); } }
.gallery-grid figure{
  margin:0; border-radius:var(--radius-md); overflow:hidden; aspect-ratio:1/1;
  background:var(--line);
}
.gallery-grid img{ width:100%; height:100%; object-fit:cover; transition:transform .3s ease; }
.gallery-grid figure:hover img{ transform:scale(1.06); }
.gallery-empty{
  border:1.5px dashed var(--line); border-radius:var(--radius-md);
  padding:48px 24px; text-align:center; color:var(--muted); grid-column:1/-1;
}

/* ---------- Testimonials ---------- */
.testi-grid{ display:grid; grid-template-columns:repeat(3,1fr); gap:22px; }
@media (max-width:920px){ .testi-grid{ grid-template-columns:1fr; } }
.testi-card{
  background:var(--paper-2); border:1px solid var(--line); border-radius:var(--radius-md);
  padding:26px; position:relative;
}
.testi-card .quote-mark{ font-family:'Space Grotesk',serif; font-size:40px; color:var(--flame-orange); line-height:1; margin-bottom:6px; display:block;}
.testi-card p{ font-size:15px; color:var(--slate); margin-bottom:18px; }
.testi-name{ font-weight:700; font-size:14px; }
.testi-loc{ font-size:12.5px; color:var(--muted); font-family:'JetBrains Mono',monospace; }

/* ---------- FAQ ---------- */
.faq-list{ max-width:820px; }
.faq-item{
  border-bottom:1px solid var(--line);
}
.faq-q{
  width:100%; text-align:left; background:none; border:none;
  display:flex; align-items:center; justify-content:space-between;
  padding:22px 0; font-family:'Space Grotesk',sans-serif; font-size:16.5px; font-weight:600; color:var(--ink);
}
.faq-q svg{ width:20px;height:20px; flex:none; transition:transform .25s ease; color:var(--flame-orange-dark); }
.faq-item.is-open .faq-q svg{ transform:rotate(45deg); }
.faq-a{
  max-height:0; overflow:hidden; transition:max-height .25s ease;
  color:var(--muted); font-size:14.5px;
}
.faq-a-inner{ padding-bottom:22px; max-width:70ch; }

/* ---------- Contact ---------- */
.contact-grid{ display:grid; grid-template-columns:1fr 1fr; gap:48px; }
@media (max-width:920px){ .contact-grid{ grid-template-columns:1fr; } }
.contact-card{
  background:var(--paper-2); border:1px solid var(--line); border-radius:var(--radius-lg);
  padding:32px;
}
.contact-row{ display:flex; gap:14px; align-items:flex-start; padding:16px 0; border-bottom:1px solid var(--line); }
.contact-row:last-child{ border-bottom:none; }
.contact-row svg{ width:22px;height:22px; color:var(--flame-blue-dark); flex:none; margin-top:2px; }
.contact-row .label{ font-size:12.5px; color:var(--muted); text-transform:uppercase; letter-spacing:.06em; font-family:'JetBrains Mono',monospace; }
.contact-row .value{ font-weight:600; font-size:15.5px; }

.contact-form{ display:grid; gap:14px; }
.contact-form input, .contact-form textarea{
  width:100%; padding:14px 16px; border-radius:var(--radius-sm); border:1.5px solid var(--line);
  font-family:inherit; font-size:15px; background:#fff; color:var(--slate);
}
.contact-form input:focus, .contact-form textarea:focus{
  outline:none; border-color:var(--flame-blue); box-shadow:0 0 0 3px rgba(47,143,255,0.15);
}
.contact-form textarea{ min-height:120px; resize:vertical; }
.form-msg{ font-size:14px; padding:10px 0; }
.form-msg.ok{ color:var(--success); }
.form-msg.err{ color:#C23A3A; }

.map-embed{ border-radius:var(--radius-lg); overflow:hidden; box-shadow:var(--shadow-sm); border:1px solid var(--line); }
.map-embed iframe{ width:100%; height:320px; border:0; display:block; }

/* ---------- Footer ---------- */
.site-footer{ background:var(--ink); color:#B9C6D6; padding:56px 0 28px; }
.footer-grid{ display:grid; grid-template-columns:1.4fr 1fr 1fr; gap:40px; margin-bottom:40px; }
@media (max-width:768px){ .footer-grid{ grid-template-columns:1fr; gap:28px; } }
.footer-brand{ font-family:'Space Grotesk',sans-serif; font-weight:700; font-size:19px; color:#fff; margin-bottom:10px; }
.footer-col h4{ color:#fff; font-size:14px; margin-bottom:14px; text-transform:uppercase; letter-spacing:.06em; }
.footer-col ul{ display:grid; gap:10px; }
.footer-col a:hover{ color:#fff; }
.footer-bottom{
  border-top:1px solid rgba(255,255,255,0.12); padding-top:22px;
  display:flex; justify-content:space-between; flex-wrap:wrap; gap:10px;
  font-size:13px; color:#7E93AB;
}

/* ---------- Floating WhatsApp ---------- */
.float-whatsapp{
  position:fixed; right:22px; bottom:22px; z-index:200;
  width:60px; height:60px; border-radius:50%;
  background:#25D366; color:#fff;
  display:flex; align-items:center; justify-content:center;
  box-shadow:0 10px 26px rgba(37,211,102,0.45);
  animation:floatPulse 2.6s ease-in-out infinite;
}
.float-whatsapp svg{ width:30px;height:30px; }
@keyframes floatPulse{
  0%,100%{ box-shadow:0 10px 26px rgba(37,211,102,0.45); }
  50%{ box-shadow:0 10px 26px rgba(37,211,102,0.7); }
}

/* ---------- Reveal-on-scroll ---------- */
.reveal{ opacity:0; transform:translateY(18px); transition:opacity .6s ease, transform .6s ease; }
.reveal.is-visible{ opacity:1; transform:none; }

/* ---------- Misc ---------- */
.badge-row{ display:flex; gap:14px; flex-wrap:wrap; margin-top:28px; }
.badge{
  display:flex; align-items:center; gap:8px;
  border:1px solid var(--line); border-radius:999px; padding:8px 16px;
  font-size:13px; font-weight:600; color:var(--slate); background:var(--paper-2);
}
.badge svg{ width:16px;height:16px; color:var(--flame-blue-dark); }

.skip-link{
  position:absolute; left:-999px; top:0; background:#fff; padding:12px 18px; z-index:999;
}
.skip-link:focus{ left:16px; top:16px; }

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