/* ============================================================
   МЕТАЛ СТРОЙ 20 — дизайн система „Стомана и шев"
   ============================================================ */
:root{
  --bg:#0f1317;
  --bg-2:#141a20;
  --panel:#1a222b;
  --panel-2:#202a34;
  --line:#2b3742;
  --text:#eef1f3;
  --muted:#9db0bd;
  --weld:#ffa32e;
  --weld-hot:#ffd97a;
  --weld-deep:#d96f14;
  --radius:14px;
  --wrap:1180px;
  --font-display:"Unbounded",sans-serif;
  --font-body:"Manrope",system-ui,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{
  margin:0;background:var(--bg);color:var(--text);
  font-family:var(--font-body);font-size:17px;line-height:1.65;
  overflow-x:hidden;
}
img{max-width:100%;height:auto;display:block}
a{color:var(--weld);text-decoration:none}
a:hover{color:var(--weld-hot)}
:focus-visible{outline:2px solid var(--weld);outline-offset:3px;border-radius:4px}
.wrap{max-width:var(--wrap);margin:0 auto;padding:0 22px}
.skip{position:absolute;left:-999px;top:0;background:var(--weld);color:#111;padding:10px 16px;z-index:999;border-radius:0 0 8px 0;font-weight:700}
.skip:focus{left:0}

h1,h2,h3{font-family:var(--font-display);line-height:1.18;margin:0 0 .5em;font-weight:600;letter-spacing:.01em}
h1{font-size:clamp(1.75rem,4.4vw,3.4rem);text-transform:uppercase}
h2{font-size:clamp(1.35rem,2.8vw,2.1rem);text-transform:uppercase}
h3{font-size:1.06rem;font-weight:500}
p{margin:0 0 1em}
.muted{color:var(--muted)}
.accent{color:var(--weld)}
.eyebrow{
  font-family:var(--font-display);font-size:.72rem;font-weight:500;
  letter-spacing:.28em;text-transform:uppercase;color:var(--weld);
  display:flex;align-items:center;gap:12px;margin-bottom:14px;
}
.eyebrow::before{content:"";width:34px;height:2px;background:linear-gradient(90deg,var(--weld),transparent)}

/* ---------- бутони ---------- */
.btn{
  display:inline-flex;align-items:center;gap:10px;
  font-family:var(--font-display);font-size:.82rem;font-weight:500;
  letter-spacing:.06em;text-transform:uppercase;
  padding:15px 26px;border-radius:10px;border:1px solid transparent;
  cursor:pointer;transition:transform .18s ease,box-shadow .18s ease,background .18s ease;
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg,var(--weld) 0%,var(--weld-deep) 100%);
  color:#15100a;box-shadow:0 8px 26px -10px rgba(255,163,46,.55);
}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 14px 32px -10px rgba(255,163,46,.7);color:#15100a}
.btn-ghost{border-color:var(--line);color:var(--text);background:rgba(255,255,255,.02)}
.btn-ghost:hover{border-color:var(--weld);color:var(--weld-hot)}
.btn svg{flex:none}

/* ---------- горна лента ---------- */
.topbar{background:#0a0d10;border-bottom:1px solid #1a2128;font-size:.83rem}
.topbar .wrap{display:flex;justify-content:space-between;align-items:center;gap:14px;padding-top:7px;padding-bottom:7px}
.topbar a{color:var(--muted);display:inline-flex;align-items:center;gap:7px}
.topbar a:hover{color:var(--weld)}
.topbar .hours{color:#5f7180;display:none}
@media(min-width:640px){.topbar .hours{display:inline}}

/* ---------- навигация ---------- */
.header{
  position:sticky;top:0;z-index:60;
  background:rgba(15,19,23,.86);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  border-bottom:1px solid rgba(43,55,66,.6);
}
.nav{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:14px 0}
.logo{display:flex;align-items:center;gap:11px;color:var(--text)}
.logo:hover{color:var(--text)}
.logo-mark{width:38px;height:38px;flex:none}
.logo-name{font-family:var(--font-display);font-size:.92rem;font-weight:700;letter-spacing:.05em;line-height:1.1;text-transform:uppercase}
.logo-name b{color:var(--weld);font-weight:700}
.logo-sub{display:block;font-family:var(--font-body);font-size:.62rem;font-weight:600;letter-spacing:.3em;color:var(--muted);text-transform:uppercase}
.menu{display:none;align-items:center;gap:4px;list-style:none;margin:0;padding:0}
.menu>li{position:relative}
.menu a{color:var(--text);font-weight:600;font-size:.92rem;padding:10px 13px;border-radius:8px;display:inline-flex;align-items:center;gap:6px}
.menu a:hover,.menu a[aria-current="page"]{color:var(--weld-hot);background:rgba(255,163,46,.07)}
.menu .caret{width:10px;height:10px;transition:transform .2s}
.sub{
  position:absolute;top:calc(100% + 8px);left:0;min-width:270px;
  background:var(--panel);border:1px solid var(--line);border-radius:12px;
  padding:8px;list-style:none;margin:0;
  opacity:0;visibility:hidden;transform:translateY(8px);
  transition:opacity .18s,transform .18s,visibility .18s;
  box-shadow:0 24px 50px -18px rgba(0,0,0,.7);
}
.menu li:hover>.sub,.menu li:focus-within>.sub{opacity:1;visibility:visible;transform:translateY(0)}
.menu li:hover>a .caret{transform:rotate(180deg)}
.sub a{display:block;padding:10px 13px;font-size:.9rem;border-radius:8px;width:100%}
.nav-cta{display:none}
@media(min-width:1020px){.menu{display:flex}.nav-cta{display:inline-flex}.burger{display:none}}

.burger{
  background:none;border:1px solid var(--line);border-radius:10px;
  width:46px;height:44px;display:grid;place-items:center;cursor:pointer;color:var(--text)
}
.mobile-nav{
  display:none;border-top:1px solid var(--line);
  background:var(--bg-2);padding:12px 22px 26px;
  max-height:calc(100vh - 120px);overflow:auto;
}
.mobile-nav.open{display:block}
.mobile-nav a{display:block;color:var(--text);font-weight:600;padding:12px 4px;border-bottom:1px solid #1d2630}
.mobile-nav .m-sub a{padding-left:20px;color:var(--muted);font-weight:500;font-size:.94rem}
.mobile-nav .btn{margin-top:18px;width:100%;justify-content:center}

/* ---------- герой ---------- */
.hero{position:relative;isolation:isolate;overflow:hidden}
.hero-media{position:absolute;inset:0;z-index:-2}
.hero-media img{width:100%;height:100%;object-fit:cover;object-position:center 38%}
.hero::before{
  content:"";position:absolute;inset:0;z-index:-1;
  background:linear-gradient(100deg,rgba(10,13,16,.94) 22%,rgba(10,13,16,.72) 55%,rgba(10,13,16,.42) 100%),
             linear-gradient(0deg,var(--bg) 0%,transparent 32%);
}
.hero-inner{padding:96px 0 110px;max-width:820px}
.hero h1{margin-bottom:.35em}
.hero .lede{font-size:clamp(1.02rem,1.6vw,1.22rem);color:#c8d3db;max-width:560px}
.hero-cta{display:flex;flex-wrap:wrap;gap:14px;margin-top:30px}
.hero-points{display:flex;flex-wrap:wrap;gap:10px 26px;margin-top:34px;padding:0;list-style:none;font-size:.9rem;color:var(--muted)}
.hero-points li{display:flex;align-items:center;gap:8px}
.hero-points svg{color:var(--weld);flex:none}

/* заваръчна линия — подписът на сайта */
.torchline{position:relative;height:64px;margin-top:6px;max-width:640px}
.torchline canvas{position:absolute;inset:0;width:100%;height:100%}

/* статичен шев за разделител на секции */
.seam{position:relative;height:3px;max-width:var(--wrap);margin:0 auto;background:#1a222b;border-radius:2px;overflow:visible}
.seam .bead{
  position:absolute;inset:0;width:0;border-radius:2px;
  background:linear-gradient(90deg,var(--weld-deep),var(--weld) 60%,var(--weld-hot));
  box-shadow:0 0 14px rgba(255,163,46,.55);
}
.seam.lit .bead{width:100%;transition:width 1.4s cubic-bezier(.6,.05,.3,1)}
.seam .tip{
  position:absolute;top:50%;left:0;width:10px;height:10px;border-radius:50%;
  background:var(--weld-hot);box-shadow:0 0 18px 6px rgba(255,217,122,.8);
  transform:translate(-50%,-50%);opacity:0;
}
.seam.lit .tip{opacity:1;animation:tip-run 1.4s cubic-bezier(.6,.05,.3,1) forwards}
@keyframes tip-run{from{left:0}to{left:100%;opacity:0}}

/* ---------- бягаща лента ---------- */
.marquee{border-block:1px solid var(--line);background:var(--bg-2);overflow:hidden;padding:15px 0}
.marquee-track{display:flex;gap:0;width:max-content;animation:marq 34s linear infinite}
.marquee span{
  font-family:var(--font-display);font-size:.8rem;font-weight:500;letter-spacing:.22em;
  text-transform:uppercase;color:var(--muted);padding:0 26px;display:flex;align-items:center;gap:26px;white-space:nowrap
}
.marquee span::after{content:"✕";color:var(--weld);font-size:.7rem}
@keyframes marq{to{transform:translateX(-50%)}}

/* ---------- секции ---------- */
.section{padding:84px 0}
.section-head{max-width:680px;margin-bottom:44px}
.grid{display:grid;gap:22px}
@media(min-width:700px){.g2{grid-template-columns:1fr 1fr}.g3{grid-template-columns:repeat(3,1fr)}}
@media(min-width:700px) and (max-width:1019px){.g3{grid-template-columns:1fr 1fr}}

/* карти услуги */
.card{
  background:linear-gradient(180deg,var(--panel) 0%,var(--bg-2) 100%);
  border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;display:flex;flex-direction:column;
  transition:transform .25s ease,border-color .25s ease,box-shadow .25s ease;
}
.card:hover{transform:translateY(-6px);border-color:rgba(255,163,46,.55);box-shadow:0 26px 48px -22px rgba(0,0,0,.8)}
.card-img{aspect-ratio:16/10;overflow:hidden;position:relative}
.card-img img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.card:hover .card-img img{transform:scale(1.05)}
.card-body{padding:22px 24px 26px;display:flex;flex-direction:column;gap:10px;flex:1}
.card-body h3{margin:0;text-transform:none;font-weight:600;font-size:1.04rem}
.card-body p{color:var(--muted);font-size:.94rem;margin:0;flex:1}
.card-link{font-weight:700;font-size:.86rem;display:inline-flex;align-items:center;gap:8px}
.card-link svg{transition:transform .2s}
.card:hover .card-link svg{transform:translateX(4px)}
.card a.cover::after{content:"";position:absolute;inset:0}
.card{position:relative}

/* за нас / текст+снимка */
.split{display:grid;gap:38px;align-items:center}
@media(min-width:900px){.split{grid-template-columns:1.05fr .95fr}}
.split-img{position:relative;border-radius:var(--radius);overflow:hidden;border:1px solid var(--line)}
.split-img::after{content:"";position:absolute;inset:0;background:linear-gradient(200deg,transparent 55%,rgba(15,19,23,.55))}
.checklist{list-style:none;padding:0;margin:18px 0 0;display:grid;gap:11px}
.checklist li{display:flex;gap:12px;align-items:flex-start;color:#cbd6de}
.checklist svg{color:var(--weld);flex:none;margin-top:4px}

/* статистики */
.stats{display:grid;gap:2px;background:var(--line);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
@media(min-width:700px){.stats{grid-template-columns:repeat(4,1fr)}}
.stat{background:var(--bg-2);padding:30px 24px}
.stat b{font-family:var(--font-display);font-size:clamp(1.6rem,3vw,2.3rem);font-weight:700;color:var(--weld);display:block;line-height:1}
.stat span{color:var(--muted);font-size:.86rem;display:block;margin-top:9px}

/* галерия */
.gallery{display:grid;gap:14px;grid-template-columns:repeat(2,1fr)}
@media(min-width:820px){.gallery{grid-template-columns:repeat(3,1fr)}}
.gallery figure{margin:0;border-radius:12px;overflow:hidden;border:1px solid var(--line);position:relative;aspect-ratio:1/1;background:var(--panel)}
.gallery img{width:100%;height:100%;object-fit:cover;transition:transform .5s}
.gallery figure:hover img{transform:scale(1.06)}
.gallery figcaption{
  position:absolute;inset:auto 0 0;padding:26px 14px 12px;font-size:.8rem;color:#dfe7ec;
  background:linear-gradient(0deg,rgba(10,13,16,.9),transparent)
}

/* отзиви */
.quote{
  background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);
  padding:28px;display:flex;flex-direction:column;gap:14px
}
.quote .stars{color:var(--weld);letter-spacing:3px;font-size:.95rem}
.quote p{margin:0;color:#d5dee5;font-size:1.02rem}
.quote footer{color:var(--muted);font-size:.88rem;font-weight:600}

/* райони */
.areas{display:grid;gap:14px;grid-template-columns:repeat(2,1fr)}
@media(min-width:820px){.areas{grid-template-columns:repeat(4,1fr)}}
.area{
  border:1px solid var(--line);border-radius:12px;padding:20px;
  background:var(--bg-2);display:block;color:var(--text);
  transition:border-color .2s,transform .2s
}
.area:hover{border-color:var(--weld);transform:translateY(-3px);color:var(--text)}
.area b{font-family:var(--font-display);font-size:.95rem;font-weight:500;display:block;margin-bottom:5px}
.area span{color:var(--muted);font-size:.83rem}

/* FAQ */
.faq{display:grid;gap:12px;max-width:820px}
.faq details{background:var(--panel);border:1px solid var(--line);border-radius:12px;overflow:hidden}
.faq summary{
  cursor:pointer;list-style:none;padding:18px 22px;font-weight:700;
  display:flex;justify-content:space-between;gap:16px;align-items:center
}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-family:var(--font-display);color:var(--weld);font-size:1.1rem;transition:transform .2s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq .faq-a{padding:0 22px 20px;color:var(--muted)}

/* CTA лента */
.cta-band{
  background:linear-gradient(115deg,#181109 0%,#241505 45%,#1a1006 100%);
  border-block:1px solid rgba(255,163,46,.3);
  position:relative;overflow:hidden
}
.cta-band::before{
  content:"";position:absolute;inset:-40% -10%;
  background:radial-gradient(closest-side,rgba(255,163,46,.22),transparent 70%);
  pointer-events:none
}
.cta-inner{padding:70px 0;display:flex;flex-wrap:wrap;gap:26px;align-items:center;justify-content:space-between;position:relative}
.cta-inner h2{margin:0 0 6px}
.cta-inner p{margin:0;color:var(--muted)}

/* съдържателни страници (услуги) */
.page-hero{
  background:linear-gradient(180deg,var(--bg-2),var(--bg));
  border-bottom:1px solid var(--line);padding:64px 0 54px
}
.crumbs{list-style:none;display:flex;flex-wrap:wrap;gap:8px;padding:0;margin:0 0 18px;font-size:.82rem;color:var(--muted)}
.crumbs a{color:var(--muted)}
.crumbs a:hover{color:var(--weld)}
.crumbs li+li::before{content:"›";margin-right:8px;color:#4c5c69}
.prose{max-width:760px}
.prose h2{margin-top:1.8em;font-size:clamp(1.15rem,2vw,1.5rem)}
.prose ul{padding-left:0;list-style:none;display:grid;gap:10px;margin:1em 0 1.6em}
.prose ul li{display:flex;gap:12px;align-items:flex-start;color:#cbd6de}
.prose ul li::before{
  content:"";width:8px;height:8px;flex:none;margin-top:9px;border-radius:2px;
  background:var(--weld);transform:rotate(45deg)
}
.side-grid{display:grid;gap:44px}
@media(min-width:960px){.side-grid{grid-template-columns:minmax(0,1fr) 330px;align-items:start}}
.side{position:sticky;top:100px;display:grid;gap:18px}
.side-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:24px}
.side-card h3{margin-top:0;font-size:.98rem}
.side-card ul{list-style:none;padding:0;margin:0;display:grid;gap:4px}
.side-card ul a{display:block;padding:9px 10px;border-radius:8px;color:#cbd6de;font-size:.92rem}
.side-card ul a:hover{background:rgba(255,163,46,.08);color:var(--weld-hot)}
.side-card ul a[aria-current="page"]{background:rgba(255,163,46,.12);color:var(--weld)}
.call-card{border-color:rgba(255,163,46,.45);background:linear-gradient(180deg,#241708,var(--panel))}
.call-card .btn{width:100%;justify-content:center;margin-top:12px}
.call-card small{color:var(--muted);display:block;margin-top:10px;text-align:center}

/* формуляр */
.form{display:grid;gap:16px;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:30px}
.form label{font-weight:700;font-size:.9rem;display:grid;gap:8px}
.form input,.form textarea{
  background:var(--bg);border:1px solid var(--line);border-radius:10px;
  padding:13px 15px;color:var(--text);font:inherit;width:100%
}
.form input:focus,.form textarea:focus{outline:none;border-color:var(--weld)}
.form .row{display:grid;gap:16px}
@media(min-width:640px){.form .row{grid-template-columns:1fr 1fr}}
.form small{color:var(--muted)}

/* футър */
.footer{border-top:1px solid var(--line);background:#0a0d10;margin-top:20px}
.footer-grid{display:grid;gap:36px;padding:60px 0 40px}
@media(min-width:820px){.footer-grid{grid-template-columns:1.4fr 1fr 1fr 1fr}}
.footer h4{font-family:var(--font-display);font-size:.78rem;font-weight:500;letter-spacing:.2em;text-transform:uppercase;color:var(--text);margin:0 0 16px}
.footer ul{list-style:none;padding:0;margin:0;display:grid;gap:9px}
.footer a{color:var(--muted);font-size:.92rem}
.footer a:hover{color:var(--weld)}
.footer p{color:var(--muted);font-size:.92rem}
.footer-bottom{border-top:1px solid #161d24;padding:20px 0;font-size:.8rem;color:#5f7180;display:flex;flex-wrap:wrap;gap:10px;justify-content:space-between}
.footer-bottom a{color:#7d8f9c}

/* мобилна лента за обаждане */
.callbar{
  position:fixed;left:0;right:0;bottom:0;z-index:70;display:flex;gap:1px;
  background:var(--line);border-top:1px solid var(--line);
  padding-bottom:env(safe-area-inset-bottom)
}
.callbar a{
  flex:1;display:flex;align-items:center;justify-content:center;gap:9px;
  padding:15px 10px;font-family:var(--font-display);font-size:.78rem;font-weight:500;
  letter-spacing:.08em;text-transform:uppercase
}
.callbar .c1{background:linear-gradient(135deg,var(--weld),var(--weld-deep));color:#15100a}
.callbar .c2{background:var(--bg-2);color:var(--text)}
@media(min-width:1020px){.callbar{display:none}}
@media(max-width:1019px){body{padding-bottom:58px}}

/* появяване при скрол */
.reveal{opacity:0;transform:translateY(26px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}

@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
  .seam .bead{width:100%}
  .marquee-track{animation:none}
}