/* ==========================================================================
   TEKNOLPOLİTANO CONSTRUCTION — Metal boru satışı və emalı
   Dizayn sistemi: sənaye / metal emalı estetikası
   Rəng: qraфit fon + ərinmiş metal narıncı vurğu + polad-mavi ikinci vurğu
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Oswald:wght@400;500;600;700&family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root{
  --bg:            #FFFFFF;
  --bg-alt:        #F3F7FB;
  --bg-elevated:   #F7FAFD;
  --bg-elevated-2: #EDF3F8;
  --line:          #DCE6EF;
  --line-soft:     #E9F0F6;
  --text:          #101B2A;
  --text-muted:    #4C5C6B;
  --text-dim:      #8394A2;
  --accent:        #0B63C4;
  --accent-2:      #084A94;
  --accent-soft:   rgba(11,99,196,0.08);
  --steel:         #1D8FA6;
  --steel-soft:    rgba(29,143,166,0.10);

  --font-display: 'Oswald', sans-serif;
  --font-body:    'Inter', sans-serif;
  --font-mono:    'JetBrains Mono', monospace;

  --container: 1200px;
  --radius-sm: 2px;
  --radius-md: 4px;
}

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  font-family:var(--font-body);
  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:var(--font-display); font-weight:600; margin:0; letter-spacing:0.3px; }
p{ margin:0; }
button{ font-family:inherit; cursor:pointer; }

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

.container{
  max-width:var(--container);
  margin:0 auto;
  padding:0 28px;
}

/* ---------- utility / repeated bits ---------- */
.eyebrow{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:3px;
  text-transform:uppercase;
  color:var(--accent);
  display:flex;
  align-items:center;
  gap:10px;
  margin-bottom:14px;
}
.eyebrow::before{
  content:'';
  width:22px;
  height:2px;
  background:var(--accent);
  display:inline-block;
}
.section-head{
  max-width:640px;
  margin-bottom:56px;
}
.section-head h2{
  font-size:clamp(28px,4vw,42px);
  line-height:1.15;
  text-transform:uppercase;
}
.section-head p{
  color:var(--text-muted);
  margin-top:16px;
  font-size:16px;
  max-width:560px;
}
section{ padding:96px 0; position:relative; }
.section-alt{ background:var(--bg-alt); }

.reveal{
  opacity:0;
  transform:translateY(24px);
  transition:opacity .7s ease, transform .7s ease;
}
.reveal.is-visible{ opacity:1; transform:translateY(0); }

@media (prefers-reduced-motion: reduce){
  .reveal{ opacity:1; transform:none; transition:none; }
  html{ scroll-behavior:auto; }
  *{ animation:none !important; }
}

.btn{
  display:inline-flex;
  align-items:center;
  gap:10px;
  padding:15px 28px;
  font-family:var(--font-mono);
  font-size:13px;
  font-weight:600;
  letter-spacing:1.5px;
  text-transform:uppercase;
  border-radius:var(--radius-sm);
  border:1px solid transparent;
  transition:all .25s ease;
  white-space:nowrap;
}
.btn-primary{
  background:var(--accent);
  color:#FFFFFF;
}
.btn-primary:hover{ background:var(--accent-2); transform:translateY(-2px); box-shadow:0 10px 24px -8px rgba(11,99,196,0.4); }
.btn-ghost{
  border-color:var(--line);
  color:var(--text);
  background:transparent;
}
.btn-ghost:hover{ border-color:var(--accent); color:var(--accent); }
.btn-block{ width:100%; justify-content:center; }

/* ==========================================================================
   HEADER
   ========================================================================== */
.site-header{
  position:fixed;
  top:0; left:0; right:0;
  z-index:100;
  background:rgba(255,255,255,0.88);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line-soft);
  transition:background .3s ease;
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  padding:14px 28px;
  max-width:1360px;
  margin:0 auto;
}
.logo-mark{ height:36px; width:auto; display:flex; align-items:center; flex-shrink:0; }
.logo-mark svg{ height:100%; width:auto; display:block; }

.main-nav{ flex-shrink:1; min-width:0; }
.main-nav ul{ display:flex; gap:20px; flex-wrap:nowrap; }
.main-nav a{
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:0.8px;
  text-transform:uppercase;
  color:var(--text-muted);
  position:relative;
  padding:6px 0;
  white-space:nowrap;
  transition:color .2s ease;
}
.main-nav a::after{
  content:'';
  position:absolute;
  left:0; bottom:0;
  height:2px; width:0;
  background:var(--accent);
  transition:width .25s ease;
}
.main-nav a:hover{ color:var(--text); }
.main-nav a:hover::after{ width:100%; }

.header-cta{ display:flex; align-items:center; gap:20px; flex-shrink:0; }
.header-phone{
  font-family:var(--font-mono);
  font-size:13px;
  color:var(--text);
  letter-spacing:0.5px;
  white-space:nowrap;
}
.header-phone span{ display:block; font-size:10px; color:var(--text-dim); letter-spacing:1px; }

@media (max-width:1300px){
  .header-phone{ display:none; }
}
@media (max-width:960px){
  .main-nav ul{ gap:14px; }
  .main-nav a{ font-size:10.5px; }
}

.nav-toggle{
  display:none;
  flex-direction:column;
  gap:5px;
  background:none;
  border:none;
  padding:8px;
}
.nav-toggle span{ width:24px; height:2px; background:var(--text); display:block; }

/* ==========================================================================
   HERO
   ========================================================================== */
.hero{
  position:relative;
  padding:180px 0 120px;
  overflow:hidden;
  background:
    radial-gradient(circle at 82% 20%, rgba(11,99,196,0.07), transparent 45%),
    radial-gradient(circle at 10% 90%, rgba(29,143,166,0.06), transparent 40%),
    var(--bg);
}
.hero-rings{
  position:absolute;
  right:-120px;
  top:50%;
  transform:translateY(-50%);
  width:640px;
  height:640px;
  opacity:0.9;
  pointer-events:none;
}
.hero-rings .ring{
  fill:none;
  stroke:var(--line);
  stroke-width:1;
}
.hero-rings .ring-accent{
  stroke:var(--accent);
  stroke-width:2;
  opacity:0.6;
  stroke-dasharray:6 10;
  transform-origin:320px 320px;
  animation:spin 60s linear infinite;
}
.hero-rings .ring-steel{
  stroke:var(--steel);
  stroke-width:1.5;
  opacity:0.5;
  transform-origin:320px 320px;
  animation:spin-rev 90s linear infinite;
}
@keyframes spin{ to{ transform:rotate(360deg); } }
@keyframes spin-rev{ to{ transform:rotate(-360deg); } }

.hero-grid{
  display:grid;
  grid-template-columns:minmax(0,640px) 1fr;
  gap:40px;
  align-items:center;
  position:relative;
  z-index:2;
}
.hero h1{
  font-size:clamp(38px,6vw,64px);
  line-height:1.06;
  text-transform:uppercase;
}
.hero h1 em{
  font-style:normal;
  color:var(--accent);
}
.hero-sub{
  margin-top:24px;
  font-size:18px;
  color:var(--text-muted);
  max-width:520px;
}
.hero-actions{
  display:flex;
  gap:16px;
  margin-top:40px;
  flex-wrap:wrap;
}

.hero-specs{
  display:flex;
  gap:0;
  margin-top:64px;
  border-top:1px solid var(--line);
  padding-top:24px;
  max-width:560px;
  flex-wrap:wrap;
}
.hero-spec{
  flex:1;
  min-width:120px;
  padding-right:24px;
}
.hero-spec b{
  display:block;
  font-family:var(--font-mono);
  font-size:24px;
  color:var(--accent);
  letter-spacing:0.5px;
}
.hero-spec span{
  display:block;
  font-size:12px;
  color:var(--text-dim);
  margin-top:4px;
  letter-spacing:0.3px;
}

/* ==========================================================================
   MARQUEE / STRIP
   ========================================================================== */
.strip{
  border-top:1px solid var(--line-soft);
  border-bottom:1px solid var(--line-soft);
  padding:16px 0;
  overflow:hidden;
  background:var(--bg-alt);
}
.strip-track{
  display:flex;
  gap:56px;
  white-space:nowrap;
  animation:marquee 28s linear infinite;
  width:max-content;
}
.strip-track span{
  font-family:var(--font-mono);
  font-size:13px;
  letter-spacing:2px;
  text-transform:uppercase;
  color:var(--text-dim);
  display:flex;
  align-items:center;
  gap:14px;
}
.strip-track span::before{
  content:'';
  width:5px; height:5px;
  border-radius:50%;
  background:var(--accent);
  display:inline-block;
}
@keyframes marquee{
  from{ transform:translateX(0); }
  to{ transform:translateX(-50%); }
}

/* ==========================================================================
   ABOUT
   ========================================================================== */
.about-grid{
  display:grid;
  grid-template-columns:0.9fr 1.1fr;
  gap:72px;
  align-items:start;
}
.about-visual{
  position:relative;
  border:1px solid var(--line);
  background:var(--bg-elevated);
  aspect-ratio:4/5;
  border-radius:var(--radius-md);
  overflow:hidden;
  display:flex;
  align-items:center;
  justify-content:center;
}
.about-visual svg{ width:78%; height:auto; }
.about-visual::after{
  content:'Ø 530MM';
  position:absolute;
  bottom:18px; left:18px;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:2px;
  color:var(--text-dim);
  border:1px solid var(--line);
  padding:6px 10px;
  border-radius:var(--radius-sm);
}
.about-copy p{
  color:var(--text-muted);
  font-size:16px;
  margin-bottom:20px;
}
.about-copy p:first-of-type{
  font-size:19px;
  color:var(--text);
  font-weight:500;
}
.about-list{
  margin-top:32px;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:20px 32px;
}
.about-list li{
  display:flex;
  gap:12px;
  align-items:flex-start;
  font-size:14.5px;
  color:var(--text-muted);
}
.about-list li b{
  color:var(--accent);
  font-family:var(--font-mono);
  font-size:13px;
}

/* ==========================================================================
   SERVICES
   ========================================================================== */
.services-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:1px;
  background:var(--line);
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  overflow:hidden;
}
.service-card{
  background:var(--bg);
  padding:36px 32px;
  transition:background .25s ease;
  position:relative;
}
.service-card:hover{ background:var(--bg-elevated); }
.service-card .icon{
  width:48px; height:48px;
  margin-bottom:24px;
  color:var(--accent);
}
.service-card h3{
  font-size:19px;
  text-transform:uppercase;
  margin-bottom:12px;
  letter-spacing:0.4px;
}
.service-card p{
  color:var(--text-muted);
  font-size:14.5px;
}
.service-card .tag{
  margin-top:18px;
  display:inline-block;
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:1.5px;
  color:var(--text-dim);
  text-transform:uppercase;
}

/* ==========================================================================
   PROCESS (numbered — real sequence)
   ========================================================================== */
.process-list{
  display:grid;
  grid-template-columns:repeat(5,1fr);
  gap:0;
  border-top:1px solid var(--line);
}
.process-step{
  padding:32px 24px 0;
  border-right:1px solid var(--line);
  position:relative;
}
.process-step:last-child{ border-right:none; }
.process-step .num{
  font-family:var(--font-mono);
  font-size:13px;
  color:var(--accent);
  letter-spacing:1px;
}
.process-step h4{
  font-size:16px;
  text-transform:uppercase;
  margin:14px 0 10px;
  letter-spacing:0.3px;
}
.process-step p{
  font-size:13.5px;
  color:var(--text-muted);
}
.process-step::before{
  content:'';
  position:absolute;
  top:-1px; left:0;
  width:0; height:2px;
  background:var(--accent);
  transition:width .5s ease;
}
.process-step.is-visible::before{ width:100%; }

/* ==========================================================================
   PRODUCTS
   ========================================================================== */
.products-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:24px;
}
.product-card{
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  background:var(--bg-alt);
  padding:28px;
  transition:transform .25s ease, border-color .25s ease;
}
.product-card:hover{
  transform:translateY(-6px);
  border-color:var(--accent);
}
.product-card .visual{
  height:140px;
  display:flex;
  align-items:center;
  justify-content:center;
  margin-bottom:24px;
  background:var(--bg-elevated);
  border-radius:var(--radius-sm);
}
.product-card .visual svg{ width:88px; height:88px; }
.product-card h3{
  font-size:18px;
  text-transform:uppercase;
  margin-bottom:8px;
}
.product-card .spec{
  font-family:var(--font-mono);
  font-size:12.5px;
  color:var(--accent);
  letter-spacing:0.5px;
  margin-bottom:12px;
  display:block;
}
.product-card p{
  color:var(--text-muted);
  font-size:14px;
}

/* ==========================================================================
   WHY US / STATS
   ========================================================================== */
.why-grid{
  display:grid;
  grid-template-columns:1.1fr 0.9fr;
  gap:72px;
  align-items:center;
}
.why-list{ display:flex; flex-direction:column; gap:0; }
.why-item{
  display:grid;
  grid-template-columns:56px 1fr;
  gap:20px;
  padding:26px 0;
  border-bottom:1px solid var(--line);
}
.why-item:first-child{ border-top:1px solid var(--line); }
.why-item .icon{ color:var(--steel); width:32px; height:32px; }
.why-item h4{ font-size:17px; text-transform:uppercase; margin-bottom:6px; }
.why-item p{ color:var(--text-muted); font-size:14.5px; }

.stat-panel{
  background:var(--bg-elevated);
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  padding:40px;
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:36px;
}
.stat-panel .stat b{
  font-family:var(--font-mono);
  font-size:36px;
  color:var(--accent);
  display:block;
}
.stat-panel .stat span{
  font-size:13px;
  color:var(--text-muted);
  display:block;
  margin-top:6px;
}

/* ==========================================================================
   GALLERY
   ========================================================================== */
.gallery-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  grid-auto-rows:180px;
  gap:12px;
}
.gallery-item{
  background:var(--bg-elevated);
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
  display:flex;
  align-items:center;
  justify-content:center;
  overflow:hidden;
  position:relative;
}
.gallery-item svg{ width:60%; height:60%; opacity:0.85; transition:transform .4s ease; }
.gallery-item:hover svg{ transform:scale(1.08) rotate(2deg); }
.gallery-item.tall{ grid-row:span 2; }
.gallery-item.wide{ grid-column:span 2; }
.gallery-item .label{
  position:absolute;
  bottom:10px; left:12px;
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:1.5px;
  text-transform:uppercase;
  color:var(--text-dim);
}

/* ==========================================================================
   CONTACT
   ========================================================================== */
.contact-grid{
  display:grid;
  grid-template-columns:0.9fr 1.1fr;
  gap:64px;
}
.contact-info-card{
  background:var(--bg-elevated);
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  padding:40px;
}
.contact-info-card h3{
  font-size:20px;
  text-transform:uppercase;
  margin-bottom:28px;
}
.contact-row{
  display:flex;
  gap:16px;
  padding:18px 0;
  border-top:1px solid var(--line);
}
.contact-row:last-of-type{ border-bottom:1px solid var(--line); }
.contact-row .icon{ color:var(--accent); width:22px; height:22px; flex-shrink:0; margin-top:2px; }
.contact-row b{ display:block; font-size:11px; letter-spacing:1.5px; color:var(--text-dim); text-transform:uppercase; font-family:var(--font-mono); margin-bottom:4px; }
.contact-row a, .contact-row span.val{ font-size:15px; color:var(--text); }
.map-embed{
  margin-top:24px;
  border-radius:var(--radius-sm);
  overflow:hidden;
  border:1px solid var(--line);
  filter:grayscale(0.15);
}
.map-embed iframe{ width:100%; height:200px; border:0; display:block; }

.contact-form{
  background:var(--bg-alt);
  border:1px solid var(--line);
  border-radius:var(--radius-md);
  padding:40px;
}
.form-row{ display:grid; grid-template-columns:1fr 1fr; gap:20px; }
.field{ margin-bottom:20px; }
.field label{
  display:block;
  font-family:var(--font-mono);
  font-size:11.5px;
  letter-spacing:1.5px;
  text-transform:uppercase;
  color:var(--text-dim);
  margin-bottom:8px;
}
.field input, .field textarea, .field select{
  width:100%;
  background:var(--bg);
  border:1px solid var(--line);
  border-radius:var(--radius-sm);
  padding:13px 14px;
  color:var(--text);
  font-family:var(--font-body);
  font-size:14.5px;
  transition:border-color .2s ease;
}
.field input:focus, .field textarea:focus, .field select:focus{
  border-color:var(--accent);
  outline:none;
}
.field textarea{ resize:vertical; min-height:110px; }
.form-msg{
  margin-bottom:20px;
  padding:14px 16px;
  border-radius:var(--radius-sm);
  font-size:14px;
  font-family:var(--font-mono);
}
.form-msg.success{ background:rgba(21,140,80,0.08); border:1px solid rgba(21,140,80,0.35); color:#146B3F; }
.form-msg.error{ background:rgba(200,60,45,0.08); border:1px solid rgba(200,60,45,0.35); color:#A32E1E; }

/* ==========================================================================
   CTA BAND
   ========================================================================== */
.cta-band{
  background:linear-gradient(120deg, var(--bg-elevated), var(--bg-alt));
  border-top:1px solid var(--line);
  border-bottom:1px solid var(--line);
  padding:72px 0;
}
.cta-band-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:32px;
  flex-wrap:wrap;
}
.cta-band h2{
  font-size:clamp(24px,3.4vw,34px);
  text-transform:uppercase;
  max-width:520px;
}
.cta-band .accent{ color:var(--accent); }

/* ==========================================================================
   FOOTER
   ========================================================================== */
.site-footer{
  background:var(--bg);
  border-top:1px solid var(--line);
  padding:64px 0 28px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1fr;
  gap:48px;
  padding-bottom:48px;
}
.footer-about p{ color:var(--text-muted); font-size:14px; margin-top:18px; max-width:280px; }
.footer-col h5{
  font-family:var(--font-mono);
  font-size:12px;
  letter-spacing:1.5px;
  text-transform:uppercase;
  color:var(--text-dim);
  margin-bottom:18px;
}
.footer-col ul li{ margin-bottom:12px; }
.footer-col ul a{ color:var(--text-muted); font-size:14.5px; transition:color .2s ease; }
.footer-col ul a:hover{ color:var(--accent); }
.footer-bottom{
  border-top:1px solid var(--line);
  padding-top:24px;
  display:flex;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:12px;
  font-size:12.5px;
  color:var(--text-dim);
  font-family:var(--font-mono);
}

/* ==========================================================================
   RESPONSIVE
   ========================================================================== */
@media (max-width:1024px){
  .about-grid, .why-grid, .contact-grid{ grid-template-columns:1fr; gap:40px; }
  .services-grid{ grid-template-columns:repeat(2,1fr); }
  .process-list{ grid-template-columns:repeat(1,1fr); }
  .process-step{ border-right:none; border-bottom:1px solid var(--line); padding-bottom:24px; }
  .products-grid{ grid-template-columns:repeat(2,1fr); }
  .gallery-grid{ grid-template-columns:repeat(2,1fr); }
  .footer-grid{ grid-template-columns:1fr 1fr; }
  .hero-grid{ grid-template-columns:1fr; }
  .hero-rings{ display:none; }
}
@media (max-width:720px){
  .main-nav, .header-phone{ display:none; }
  .nav-toggle{ display:flex; }
  .header-inner{ padding:12px 20px; gap:12px; }
  .logo-mark{ height:26px; }
  .header-cta{ gap:10px; }
  .header-cta .btn-primary{ padding:10px 14px; font-size:11px; }
  .services-grid, .products-grid, .gallery-grid{ grid-template-columns:1fr; }
  .form-row{ grid-template-columns:1fr; }
  .stat-panel{ grid-template-columns:1fr 1fr; padding:28px; }
  .about-list{ grid-template-columns:1fr; }
  section{ padding:64px 0; }
  .hero{ padding:140px 0 72px; }
  .cta-band-inner{ flex-direction:column; align-items:flex-start; }
  .footer-grid{ grid-template-columns:1fr; gap:32px; }
}

/* mobile nav drawer */
.main-nav.open{
  display:flex !important;
  position:fixed;
  top:70px; left:0; right:0;
  background:var(--bg);
  border-bottom:1px solid var(--line);
  flex-direction:column;
  padding:16px 28px 24px;
}
.main-nav.open ul{ flex-direction:column; gap:4px; }
.main-nav.open a{ padding:14px 0; border-bottom:1px solid var(--line-soft); display:block; }