/* =============================================================
   electricalconstructionservices.kz — дизайн-система (светлая, «электрический синий + янтарь»)
   База: мягкий светло-голубой (не белый). Акцент: синий.
   Искры: янтарь (цифры, молния, акценты в герое).
   Тёмные «острова»: hero, CTA и футер — тёмно-синие (не чёрные).
   ============================================================= */

/* ---------- 1. ТОКЕНЫ ---------- */
:root{
  --bg:#EAF1FA;             /* фон страницы — светло-голубой, не белый */
  --bg-2:#E0E9F6;           /* тонированные секции */
  --surface:#FBFDFF;        /* карточки (чуть голубоватые, не стерильно белые) */
  --surface-2:#F1F6FE;      /* ховер карточки */
  --line:rgba(20,42,80,.12);
  --line-2:rgba(20,42,80,.2);

  --ink:#13233F;            /* заголовки — глубокий тёмно-синий */
  --text:#3A4963;           /* основной текст */
  --muted:#6A7A97;          /* приглушённый */

  --accent:#2563EB;         /* основной — насыщенный синий */
  --accent-600:#1D4ED8;
  --accent-700:#1E40AF;     /* тёмно-синий для текста на светлом */
  --accent-tint:rgba(37,99,235,.12);
  --accent-glow:rgba(37,99,235,.42);
  --accent-2:#F5A200;       /* янтарная «искра» */
  --accent-2-700:#C77F00;

  --wa:#25D366;
  --wa-600:#1EBE5A;

  --dark:#0F1E3A;           /* тёмно-синие острова */

  --radius:18px;
  --radius-sm:12px;
  --radius-lg:28px;
  --shadow-sm:0 8px 22px -12px rgba(15,33,63,.22);
  --shadow:0 26px 50px -24px rgba(15,33,63,.34);

  --maxw:1180px;
  --gutter:clamp(16px,4vw,30px);
  --font:"Inter Tight","SF Pro Display",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,system-ui,Arial,sans-serif;
}

/* ---------- 2. БАЗА ---------- */
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:var(--font);background:var(--bg);color:var(--text);
  line-height:1.6;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;overflow-x:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button{font-family:inherit}
h1,h2,h3,h4{margin:0;line-height:1.1;font-weight:800;letter-spacing:-.02em;color:var(--ink)}
p{margin:0}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:6px}
h1{font-size:clamp(2.1rem,5.4vw,3.7rem)}
h2{font-size:clamp(1.7rem,3.7vw,2.7rem)}
h3{font-size:clamp(1.15rem,2vw,1.4rem)}

/* ---------- 3. УТИЛИТЫ ---------- */
.container{width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:var(--gutter)}
.section{padding-block:clamp(60px,8.5vw,120px)}
.section--tint{background:var(--bg-2)}
.eyebrow{display:inline-flex;align-items:center;gap:9px;font-size:.82rem;font-weight:800;
  letter-spacing:.15em;text-transform:uppercase;color:var(--accent-700)}
.eyebrow::before{content:"";width:24px;height:2px;background:var(--accent);border-radius:2px}
.section__head{max-width:730px;margin-bottom:clamp(34px,4.5vw,56px)}
.section__head p{color:var(--muted);margin-top:15px;font-size:1.08rem}
.center{text-align:center;margin-inline:auto}
.lead{color:var(--text);font-size:1.12rem}

/* ---------- 4. КНОПКИ ---------- */
.btn{--_bg:var(--accent);--_fg:#fff;
  display:inline-flex;align-items:center;justify-content:center;gap:10px;
  padding:15px 28px;border-radius:999px;border:1px solid transparent;
  font-weight:700;font-size:1rem;cursor:pointer;background:var(--_bg);color:var(--_fg);
  transition:transform .18s ease,box-shadow .25s ease,background .2s ease,border-color .2s ease,color .2s ease;
  will-change:transform}
.btn svg{width:20px;height:20px;flex:none}
.btn:hover{transform:translateY(-2px)}
.btn--primary{box-shadow:0 12px 26px -10px var(--accent-glow)}
.btn--primary:hover{box-shadow:0 18px 34px -10px var(--accent-glow);background:var(--accent-600)}
.btn--wa{--_bg:var(--wa);--_fg:#04210f;box-shadow:0 12px 26px -10px rgba(37,211,102,.5)}
.btn--wa:hover{--_bg:var(--wa-600)}
.btn--ghost{--_bg:transparent;--_fg:var(--ink);border-color:var(--line-2)}
.btn--ghost:hover{border-color:var(--accent);color:var(--accent-700)}
.btn--lg{padding:17px 34px;font-size:1.06rem}
.hero .btn--ghost,.cta .btn--ghost{--_fg:#fff;border-color:rgba(255,255,255,.42)}
.hero .btn--ghost:hover,.cta .btn--ghost:hover{border-color:var(--accent-2);color:var(--accent-2)}

/* ---------- 5. ХЕДЕР ---------- */
.header{position:sticky;top:0;z-index:60;background:rgba(234,241,250,.82);
  backdrop-filter:blur(14px) saturate(160%);border-bottom:1px solid var(--line)}
.header__row{display:flex;align-items:center;gap:20px;height:72px}
.brand{display:flex;align-items:center;gap:11px;font-weight:800;letter-spacing:-.02em;font-size:1.14rem;color:var(--ink)}
.brand__mark{width:36px;height:36px;flex:none;border-radius:10px;display:grid;place-items:center;
  background:linear-gradient(150deg,#1c3260,#0f1e3a);box-shadow:0 6px 16px -8px rgba(15,33,63,.6)}
.brand__mark svg{width:20px;height:20px}
.brand span b{color:var(--accent-700)}
.nav{display:flex;align-items:center;gap:28px;margin-left:auto}
.nav a{color:var(--muted);font-weight:600;font-size:.98rem;transition:color .18s}
.nav a:hover{color:var(--ink)}
.header__cta{display:flex;align-items:center;gap:14px}
.header__phone{font-weight:700;color:var(--ink);white-space:nowrap}
.header__phone small{display:block;font-weight:600;color:var(--muted);font-size:.72rem}
.burger{display:none;width:44px;height:44px;border:1px solid var(--line-2);background:var(--surface);
  border-radius:11px;cursor:pointer;padding:0;position:relative}
.burger span,.burger span::before,.burger span::after{content:"";position:absolute;left:50%;top:50%;
  width:20px;height:2px;background:var(--ink);border-radius:2px;transform:translate(-50%,-50%);transition:.25s}
.burger span::before{transform:translate(-50%,-8px)}
.burger span::after{transform:translate(-50%,6px)}
body.nav-open .burger span{background:transparent}
body.nav-open .burger span::before{transform:translate(-50%,-50%) rotate(45deg)}
body.nav-open .burger span::after{transform:translate(-50%,-50%) rotate(-45deg)}
.lang{display:inline-flex;border:1px solid var(--line-2);border-radius:999px;overflow:hidden;background:var(--surface);flex:none}
.lang button{appearance:none;border:0;background:transparent;color:var(--muted);font-weight:700;font-size:.82rem;
  padding:8px 12px;cursor:pointer;transition:color .18s,background .18s;letter-spacing:.02em}
.lang button.is-active{background:var(--accent);color:#fff}
.lang button:not(.is-active):hover{color:var(--ink)}

/* ---------- 6. HERO (тёмно-синий) ---------- */
.hero{position:relative;isolation:isolate;overflow:hidden;background:var(--dark)}
.hero__bg{position:absolute;inset:0;z-index:-2;
  background:url("../img/hero/hero-opory-kran.jpg") center 38%/cover no-repeat;
  background-image:-webkit-image-set(url("../img/hero/hero-opory-kran.webp") type("image/webp"), url("../img/hero/hero-opory-kran.jpg") type("image/jpeg"));
  background-image:image-set(url("../img/hero/hero-opory-kran.webp") type("image/webp"), url("../img/hero/hero-opory-kran.jpg") type("image/jpeg"))}
.hero__bg::after{content:"";position:absolute;inset:0;
  background:linear-gradient(180deg,rgba(10,22,44,.66) 0%,rgba(10,22,44,.76) 45%,rgba(9,20,40,.93) 100%),
             radial-gradient(1000px 500px at 80% 8%,rgba(245,162,0,.18),transparent 60%)}
.hero__inner{padding-block:clamp(70px,11vw,148px);max-width:770px}
.hero .eyebrow{color:var(--accent-2)}
.hero .eyebrow::before{background:var(--accent-2)}
.hero h1{color:#fff;margin-top:18px}
.hero h1 em{font-style:normal;color:var(--accent-2)}
.hero__sub{margin-top:20px;font-size:clamp(1.05rem,1.6vw,1.28rem);color:#D9E2EF;max-width:600px}
.hero__actions{display:flex;flex-wrap:wrap;gap:14px;margin-top:34px}
.hero__chips{display:flex;flex-wrap:wrap;gap:10px;margin-top:38px}
.chip{display:inline-flex;align-items:center;gap:8px;padding:10px 16px;border-radius:999px;
  background:rgba(255,255,255,.09);border:1px solid rgba(255,255,255,.22);font-size:.9rem;font-weight:600;color:#fff}
.chip svg{width:17px;height:17px;color:var(--accent-2)}

/* ---------- 7. БЛОКИ ---------- */
.stripe{border-bottom:1px solid var(--line);background:var(--bg-2)}
.stripe__grid{display:grid;grid-template-columns:repeat(4,1fr)}
.stripe__item{padding:30px var(--gutter);text-align:center;border-left:1px solid var(--line)}
.stripe__item:first-child{border-left:none}
.stripe__item b{display:block;font-size:1.85rem;color:var(--accent-2-700);letter-spacing:-.02em}
.stripe__item span{color:var(--muted);font-size:.93rem;font-weight:600}

.grid{display:grid;gap:20px}
.services{grid-template-columns:repeat(auto-fill,minmax(265px,1fr))}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);
  padding:28px 26px;box-shadow:var(--shadow-sm);will-change:transform;
  transition:transform .24s cubic-bezier(.2,.7,.2,1),box-shadow .24s ease,border-color .24s ease}
.card:hover{transform:translateY(-10px) scale(1.04);box-shadow:var(--shadow);border-color:rgba(37,99,235,.5)}
.card__ico{width:56px;height:56px;border-radius:15px;display:grid;place-items:center;margin-bottom:18px;
  background:var(--accent-tint);color:var(--accent);border:1px solid rgba(37,99,235,.22);
  transition:transform .24s ease,background .24s ease}
.card:hover .card__ico{transform:scale(1.1) rotate(-3deg);background:rgba(37,99,235,.18)}
.card__ico svg{width:28px;height:28px}
.card h3{margin-bottom:9px}
.card p{color:var(--muted);font-size:.97rem}

.split{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(28px,5vw,66px);align-items:center}
.split__media{position:relative;border-radius:var(--radius-lg);overflow:hidden;box-shadow:var(--shadow);border:1px solid var(--line)}
.split__media img{width:100%;height:100%;object-fit:cover;aspect-ratio:4/5}
.split__media .badge{position:absolute;left:18px;bottom:18px;background:rgba(15,30,58,.86);backdrop-filter:blur(6px);
  border:1px solid rgba(255,255,255,.16);padding:11px 17px;border-radius:12px;font-weight:700;font-size:.9rem;color:#fff}
.split__media .badge b{color:var(--accent-2)}
.ul-check{list-style:none;padding:0;margin:24px 0 0;display:grid;gap:14px}
.ul-check li{display:flex;gap:12px;align-items:flex-start;color:var(--text)}
.ul-check svg{width:22px;height:22px;color:var(--accent);flex:none;margin-top:2px}

.feat{grid-template-columns:repeat(auto-fill,minmax(285px,1fr))}
.feat__item{display:flex;gap:16px;padding:24px;border-radius:var(--radius);border:1px solid var(--line);
  background:var(--surface);box-shadow:var(--shadow-sm);
  transition:transform .24s cubic-bezier(.2,.7,.2,1),box-shadow .24s ease,border-color .24s ease}
.feat__item:hover{transform:translateY(-8px) scale(1.02);box-shadow:var(--shadow);border-color:rgba(37,99,235,.4)}
.feat__item h3{font-size:1.14rem;margin-bottom:7px}
.feat__item p{color:var(--muted);font-size:.95rem}
.feat__ico{width:50px;height:50px;flex:none;border-radius:13px;display:grid;place-items:center;
  background:var(--accent-tint);color:var(--accent);border:1px solid rgba(37,99,235,.22)}
.feat__ico svg{width:25px;height:25px}

.steps{grid-template-columns:repeat(auto-fit,minmax(225px,1fr));counter-reset:s}
.step{padding:28px 24px;border-radius:var(--radius);background:var(--surface);border:1px solid var(--line);
  box-shadow:var(--shadow-sm);position:relative;overflow:hidden;
  transition:transform .24s cubic-bezier(.2,.7,.2,1),box-shadow .24s ease,border-color .24s ease}
.step:hover{transform:translateY(-8px) scale(1.02);box-shadow:var(--shadow);border-color:rgba(37,99,235,.4)}
.step::before{counter-increment:s;content:"0" counter(s);position:absolute;top:16px;right:20px;
  font-size:2.4rem;font-weight:800;color:var(--accent-2);opacity:.9;letter-spacing:-.04em;line-height:1}
.step h3{margin-bottom:9px;font-size:1.14rem;position:relative;padding-right:64px}
.step p{color:var(--muted);font-size:.95rem;position:relative}

.areas{display:flex;flex-wrap:wrap;gap:11px}
.area-tag{padding:10px 17px;border-radius:999px;background:var(--surface);border:1px solid var(--line);
  box-shadow:var(--shadow-sm);font-weight:600;font-size:.93rem;color:var(--ink)}
.area-tag b{color:var(--accent-700)}

.cta{position:relative;overflow:hidden;border-radius:var(--radius-lg);color:#fff;
  background:linear-gradient(120deg,#0F1E3A,#1c3a6e);padding:clamp(38px,5vw,64px);text-align:center;box-shadow:var(--shadow)}
.cta::before{content:"";position:absolute;inset:0;z-index:0;
  background:radial-gradient(700px 320px at 50% -20%,rgba(245,162,0,.22),transparent 60%)}
.cta>*{position:relative;z-index:1}
.cta .eyebrow{color:var(--accent-2)}
.cta .eyebrow::before{background:var(--accent-2)}
.cta h2{max-width:760px;margin-inline:auto;color:#fff}
.cta p{color:#C9D6E6;margin-top:15px;max-width:560px;margin-inline:auto}
.cta .hero__actions{justify-content:center}
.actions-center{justify-content:center;margin-top:34px}

/* ---------- 8. ГАЛЕРЕЯ + ЛАЙТБОКС ---------- */
.gallery{display:grid;grid-template-columns:repeat(auto-fill,minmax(265px,1fr));gap:16px}
.shot{position:relative;overflow:hidden;border-radius:var(--radius);border:1px solid var(--line);
  cursor:pointer;background:var(--surface);aspect-ratio:4/3;box-shadow:var(--shadow-sm);
  transition:transform .24s ease,box-shadow .24s ease}
.shot:hover{transform:translateY(-6px);box-shadow:var(--shadow)}
.shot img{width:100%;height:100%;object-fit:cover;transition:transform .5s ease}
.shot:hover img{transform:scale(1.07)}
.shot__cap{position:absolute;inset:auto 0 0 0;padding:28px 16px 14px;color:#fff;
  background:linear-gradient(180deg,transparent,rgba(9,18,36,.92));font-size:.9rem;font-weight:600;
  transform:translateY(6px);opacity:0;transition:.25s}
.shot:hover .shot__cap{transform:none;opacity:1}
.shot__zoom{position:absolute;top:12px;right:12px;width:36px;height:36px;border-radius:10px;
  background:rgba(255,255,255,.94);border:1px solid var(--line-2);display:grid;place-items:center;opacity:0;transition:.25s}
.shot:hover .shot__zoom{opacity:1}
.shot__zoom svg{width:18px;height:18px;color:var(--accent)}
.gallery-note{text-align:center;color:var(--muted);margin-top:30px;font-size:1.05rem;font-style:italic}

.filters{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:26px}
.filter{padding:10px 18px;border-radius:999px;background:var(--surface);border:1px solid var(--line);
  color:var(--muted);font-weight:600;font-size:.92rem;cursor:pointer;transition:.18s}
.filter:hover{color:var(--ink);border-color:var(--line-2)}
.filter.is-active{background:var(--accent);color:#fff;border-color:var(--accent)}
.shot.is-hidden{display:none}

.lb{position:fixed;inset:0;z-index:100;display:none;place-items:center;
  background:rgba(8,16,32,.95);backdrop-filter:blur(6px);padding:24px}
.lb.is-open{display:grid}
.lb__img{max-width:min(1100px,94vw);max-height:82vh;border-radius:12px;box-shadow:var(--shadow);border:1px solid rgba(255,255,255,.16)}
.lb__cap{position:absolute;bottom:26px;left:0;right:0;text-align:center;color:#D9E2EF;font-weight:600;padding-inline:20px}
.lb__btn{position:absolute;width:52px;height:52px;border-radius:50%;border:1px solid rgba(255,255,255,.2);
  background:rgba(20,36,63,.85);color:#fff;cursor:pointer;display:grid;place-items:center;transition:.18s}
.lb__btn:hover{background:var(--accent);color:#fff;border-color:var(--accent)}
.lb__btn svg{width:24px;height:24px}
.lb__close{top:20px;right:20px}
.lb__prev{left:16px;top:50%;transform:translateY(-50%)}
.lb__next{right:16px;top:50%;transform:translateY(-50%)}

/* ---------- 9. ФУТЕР (тёмно-синий) ---------- */
.footer{background:var(--dark);color:#C4CFDE;padding-block:58px 30px}
.footer .brand{color:#fff}
.footer .brand span b{color:#6BA4FF}
.footer p{color:#95A3B8;font-size:.95rem;margin-top:15px;max-width:320px}
.footer h4{font-size:.82rem;letter-spacing:.13em;text-transform:uppercase;color:#7C8AA0;margin-bottom:16px}
.footer ul{list-style:none;padding:0;margin:0;display:grid;gap:11px}
.footer ul a,.footer ul li{color:#C4CFDE;font-size:.96rem}
.footer ul a:hover{color:var(--accent-2)}
.footer__grid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:36px}
.footer__contact a{display:flex;align-items:center;gap:10px;font-weight:600}
.footer__contact svg{width:18px;height:18px;color:var(--accent-2)}
.footer__bottom{display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;
  margin-top:42px;padding-top:22px;border-top:1px solid rgba(255,255,255,.1);color:#7C8AA0;font-size:.86rem}
.footer__bottom a:hover{color:var(--accent-2)}

.wa-float{position:fixed;right:18px;bottom:18px;z-index:70;width:60px;height:60px;border-radius:50%;
  background:var(--wa);display:grid;place-items:center;box-shadow:0 14px 32px -8px rgba(37,211,102,.6);transition:transform .2s}
.wa-float:hover{transform:scale(1.08)}
.wa-float svg{width:31px;height:31px;color:#04210f}

.to-top{position:fixed;left:18px;bottom:18px;z-index:70;width:48px;height:48px;border-radius:50%;
  background:var(--ink,#12203c);border:none;cursor:pointer;display:grid;place-items:center;
  box-shadow:0 14px 32px -8px rgba(18,32,60,.5);
  opacity:0;visibility:hidden;transform:translateY(12px);
  transition:opacity .25s,transform .25s,visibility .25s}
.to-top.is-visible{opacity:1;visibility:visible;transform:translateY(0)}
.to-top:hover{transform:translateY(-3px)}
.to-top svg{width:22px;height:22px;color:#fff}
@media(max-width:560px){ .to-top{width:42px;height:42px;left:14px;bottom:14px} }

/* ---------- 10. АДАПТИВ ---------- */
@media(max-width:900px){
  .split{grid-template-columns:1fr}
  .split__media{order:-1}
  .split__media img{aspect-ratio:16/10}
  .footer__grid{grid-template-columns:1fr 1fr}
  .stripe__grid{grid-template-columns:repeat(2,1fr)}
  .stripe__item:nth-child(3){border-left:none}
  .stripe__item{border-top:1px solid var(--line)}
  .stripe__item:nth-child(-n+2){border-top:none}
}
@media(max-width:720px){
  .nav,.header__phone{display:none}
  .burger{display:block}
  .header__row{gap:12px}
  .nav.is-mobile{display:flex;flex-direction:column;gap:0;position:fixed;inset:72px 0 auto 0;margin:0;
    background:var(--bg);border-bottom:1px solid var(--line);padding:8px var(--gutter) 20px;
    transform:translateY(-140%);transition:transform .3s ease;z-index:55;box-shadow:var(--shadow)}
  body.nav-open .nav.is-mobile{transform:none}
  .nav.is-mobile a{padding:15px 4px;border-bottom:1px solid var(--line);width:100%;font-size:1.05rem}
  .footer__grid{grid-template-columns:1fr}
}
@media(max-width:560px){ .header .btn--wa{display:none} }
@media(max-width:480px){
  .stripe__grid{grid-template-columns:1fr}
  .stripe__item{border-left:none;border-top:1px solid var(--line)}
  .stripe__item:first-child{border-top:none}
}

/* ---------- 11. АНИМАЦИИ ---------- */
.reveal{opacity:0;transform:translateY(16px);transition:opacity .6s ease,transform .6s ease}
.reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  *{animation-duration:.001ms!important;transition-duration:.001ms!important;scroll-behavior:auto!important}
  .reveal{opacity:1;transform:none}
}

/* страховка от горизонтального скролла на мобильных */
body{overflow-x:hidden;max-width:100%}