/* ============================================================
   Өзен-Өндіріс — индустриальный лендинг
   Палитра: графит / тёмно-синий + оранжевый акцент
   ============================================================ */

:root{
  --bg:#0f151e;
  --bg-alt:#131c28;
  --navy:#152238;
  --panel:#18212e;
  --ink:#e9eef5;
  --muted:#9dabbd;
  --line:rgba(255,255,255,.09);
  --line-str:rgba(255,255,255,.16);
  --accent:#f97316;
  --accent-soft:rgba(249,115,22,.14);
  --steel:#7f95b0;
  --radius:4px;
  --wrap:1200px;
  --head-h:74px;
  --shadow:0 18px 40px rgba(0,0,0,.35);
  --t:.25s cubic-bezier(.4,0,.2,1);
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--head-h) + 10px);-webkit-text-size-adjust:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font:400 16px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  overflow-x:hidden;
}
img{max-width:100%;display:block;height:auto}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4{margin:0 0 .5em;line-height:1.18;font-weight:800;letter-spacing:-.01em}
p{margin:0 0 1em}
ul,ol{margin:0;padding:0;list-style:none}
button{font:inherit;color:inherit;cursor:pointer}
::selection{background:var(--accent);color:#0b1017}

.container{width:min(100% - 40px,var(--wrap));margin-inline:auto}
.mono{font-family:ui-monospace,SFMono-Regular,Consolas,"Liberation Mono",monospace;letter-spacing:.02em}

.skip-link{position:absolute;left:-9999px;top:0;background:var(--accent);color:#0b1017;padding:10px 16px;z-index:200}
.skip-link:focus{left:10px;top:10px}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px}

/* ---------- Кнопки ---------- */
.btn{
  --btn-bg:transparent;
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:15px 28px;border:1px solid transparent;border-radius:var(--radius);
  background:var(--btn-bg);
  font-weight:700;font-size:15px;letter-spacing:.02em;text-transform:uppercase;
  transition:transform var(--t),background var(--t),border-color var(--t),box-shadow var(--t);
  white-space:nowrap;
}
.btn--accent{--btn-bg:var(--accent);color:#14100a;box-shadow:0 8px 24px rgba(249,115,22,.22)}
.btn--accent:hover{--btn-bg:#ff8a34;transform:translateY(-2px)}
.btn--ghost{border-color:var(--line-str);color:var(--ink)}
.btn--ghost:hover{border-color:var(--accent);color:var(--accent);background:var(--accent-soft)}
.btn--sm{padding:11px 20px;font-size:13px}
.btn--xs{padding:8px 14px;font-size:12px;text-transform:none;letter-spacing:0}
.btn--block{width:100%}

/* ---------- Шапка ---------- */
.header{
  position:fixed;inset:0 0 auto;z-index:100;height:var(--head-h);
  display:flex;align-items:center;
  background:rgba(15,21,30,.72);backdrop-filter:blur(12px);
  border-bottom:1px solid transparent;transition:background var(--t),border-color var(--t),height var(--t);
}
.header.is-stuck{background:rgba(12,17,25,.96);border-bottom-color:var(--line)}
.header__inner{display:flex;align-items:center;gap:24px}
.brand{display:flex;align-items:center;gap:12px;margin-right:auto}
.brand__mark{width:40px;height:40px;flex:none}
.brand__text{display:flex;flex-direction:column;line-height:1.1}
.brand__name{font-weight:800;font-size:17px;letter-spacing:.08em}
.brand__tag{font-size:11px;color:var(--muted);letter-spacing:.06em;text-transform:uppercase}

.nav{display:flex;gap:6px}
.nav__link{
  position:relative;padding:10px 14px;font-size:14px;font-weight:600;color:var(--muted);
  transition:color var(--t);
}
.nav__link::after{
  content:"";position:absolute;left:14px;right:14px;bottom:2px;height:2px;
  background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform var(--t);
}
.nav__link:hover,.nav__link.is-active{color:var(--ink)}
.nav__link.is-active::after{transform:scaleX(1)}

.nav__mobile{display:none}
.header__actions{display:flex;align-items:center;gap:16px}
.header__phone{font-weight:700;font-size:15px;white-space:nowrap}
.header__phone:hover{color:var(--accent)}

.burger{display:none;width:44px;height:44px;background:none;border:1px solid var(--line-str);border-radius:var(--radius);padding:0;position:relative}
.burger span{position:absolute;left:11px;right:11px;height:2px;background:var(--ink);transition:transform var(--t),opacity var(--t)}
.burger span:nth-child(1){top:15px}
.burger span:nth-child(2){top:21px}
.burger span:nth-child(3){top:27px}
.burger[aria-expanded="true"] span:nth-child(1){transform:translateY(6px) rotate(45deg)}
.burger[aria-expanded="true"] span:nth-child(2){opacity:0}
.burger[aria-expanded="true"] span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}

/* ---------- Главный экран ---------- */
.hero{position:relative;min-height:100svh;display:flex;align-items:center;padding:calc(var(--head-h) + 60px) 0 90px;overflow:hidden}
.hero__bg{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;filter:grayscale(.35) contrast(1.05)}
.hero__veil{
  position:absolute;inset:0;
  background:
    linear-gradient(100deg,rgba(11,16,23,.96) 0%,rgba(13,22,38,.86) 45%,rgba(13,22,38,.35) 100%),
    linear-gradient(0deg,rgba(15,21,30,.95),rgba(15,21,30,0) 45%);
}
.hero__inner{position:relative;max-width:880px}
.eyebrow{
  display:inline-flex;align-items:center;gap:10px;margin:0 0 18px;
  font-size:12px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--accent);
}
.eyebrow::before{content:"";width:28px;height:2px;background:var(--accent)}
.hero__title{font-size:clamp(32px,5.4vw,62px);max-width:16ch;margin-bottom:22px}
.hero__lead{font-size:clamp(16px,1.6vw,20px);color:#c6d1de;max-width:60ch;margin-bottom:34px}
.hero__cta{display:flex;flex-wrap:wrap;gap:14px;margin-bottom:56px}
.hero__facts{
  display:grid;grid-auto-flow:column;grid-auto-columns:minmax(0,220px);grid-template-rows:auto auto;
  gap:6px 48px;border-top:1px solid var(--line);padding-top:26px;
}
.hero__facts li{display:grid;grid-row:span 2;grid-template-rows:subgrid;gap:4px;align-content:start}
.hero__facts strong{font-size:20px;font-weight:800;color:var(--ink)}
.hero__facts span{font-size:13px;color:var(--muted)}
.hero__scroll{
  position:absolute;left:50%;bottom:26px;width:26px;height:42px;border:2px solid var(--line-str);border-radius:14px;
  transform:translateX(-50%);
}
.hero__scroll::after{
  content:"";position:absolute;left:50%;top:8px;width:3px;height:8px;background:var(--accent);border-radius:2px;
  transform:translateX(-50%);animation:scrolldot 1.8s infinite;
}
@keyframes scrolldot{0%{opacity:0;transform:translate(-50%,0)}35%{opacity:1}100%{opacity:0;transform:translate(-50%,14px)}}

/* ---------- Секции ---------- */
.section{padding:96px 0;position:relative}
.section--tight{padding:72px 0}
.section--alt{background:var(--bg-alt)}
.section--alt::before{content:"";position:absolute;inset:0 0 auto;height:1px;background:var(--line)}
.section__head{max-width:760px;margin-bottom:52px}
.section__title{font-size:clamp(26px,3.2vw,40px);margin-bottom:16px}
.section__lead{color:var(--muted);font-size:17px;margin:0}

.grid{display:grid;gap:20px}
.grid--3{grid-template-columns:repeat(auto-fit,minmax(300px,1fr))}
.grid--4{grid-template-columns:repeat(auto-fit,minmax(240px,1fr))}

.ico{width:34px;height:34px;stroke:var(--accent);fill:none;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;margin-bottom:16px}

/* ---------- Преимущества ---------- */
.feature{padding:26px;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);border-top:2px solid var(--accent)}
.feature h3{font-size:17px;margin-bottom:8px}
.feature p{margin:0;color:var(--muted);font-size:15px}

/* ---------- Карточки услуг ---------- */
.card{
  position:relative;padding:30px 26px;background:var(--panel);
  border:1px solid var(--line);border-radius:var(--radius);
  transition:transform var(--t),border-color var(--t),background var(--t);
  overflow:hidden;
}
.card::after{content:"";position:absolute;left:0;top:0;width:100%;height:2px;background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform var(--t)}
.card:hover{transform:translateY(-4px);border-color:var(--line-str);background:#1b2533}
.card:hover::after{transform:scaleX(1)}
.card h3{font-size:18px;margin-bottom:10px}
.card p{margin:0;color:var(--muted);font-size:15px}
.card--cta{background:linear-gradient(150deg,var(--navy),#1c2c47);border-color:rgba(249,115,22,.35);display:flex;flex-direction:column;align-items:flex-start;justify-content:center}
.card--cta p{margin-bottom:18px}

/* ---------- Процесс ---------- */
.steps{display:grid;gap:20px;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));counter-reset:s}
.step{position:relative;padding:26px 24px;background:var(--panel);border:1px solid var(--line);border-radius:var(--radius)}
.step__num{display:block;font-size:34px;font-weight:800;color:transparent;-webkit-text-stroke:1px var(--steel);line-height:1;margin-bottom:14px}
.step h3{font-size:17px;margin-bottom:8px}
.step p{margin:0;color:var(--muted);font-size:15px}

/* ---------- О компании ---------- */
.about{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center}
.about__media{position:relative;padding-bottom:56px;padding-right:40px}
.about__media-lg{border-radius:var(--radius);border:1px solid var(--line);filter:grayscale(.2)}
.about__media-sm{
  position:absolute;right:0;bottom:0;width:56%;border-radius:var(--radius);
  border:6px solid var(--bg-alt);box-shadow:var(--shadow);
}
.about__text p{color:#c2ccd9}
.ticks{margin:22px 0 28px;display:grid;gap:11px}
.ticks li{position:relative;padding-left:30px;color:var(--muted);font-size:15px}
.ticks li::before{
  content:"";position:absolute;left:0;top:7px;width:16px;height:9px;
  border-left:2px solid var(--accent);border-bottom:2px solid var(--accent);transform:rotate(-45deg);
}

/* ---------- Галерея ---------- */
.gallery{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(330px,1fr))}
.shot{margin:0;position:relative;overflow:hidden;border-radius:var(--radius);border:1px solid var(--line);cursor:zoom-in;background:#0b1017}
.shot img{aspect-ratio:4/3;object-fit:cover;width:100%;transition:transform .5s ease,filter var(--t);filter:grayscale(.25)}
.shot:hover img{transform:scale(1.05);filter:grayscale(0)}
.shot figcaption{
  position:absolute;left:0;right:0;bottom:0;padding:26px 16px 14px;font-size:14px;font-weight:600;
  background:linear-gradient(0deg,rgba(9,13,19,.92),rgba(9,13,19,0));
}
.note{margin-top:22px;font-size:14px;color:var(--muted)}

/* ---------- Форма заявки ---------- */
.request{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:start}
.request__text p{color:#c2ccd9}
.request__direct{display:flex;flex-wrap:wrap;gap:12px}
.form{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:32px;box-shadow:var(--shadow)}
.field{margin-bottom:18px}
.field label{display:block;font-size:13px;font-weight:600;letter-spacing:.03em;text-transform:uppercase;color:var(--muted);margin-bottom:8px}
.req{color:var(--accent)}
.field input,.field textarea{
  width:100%;padding:13px 15px;background:#111a25;color:var(--ink);
  border:1px solid var(--line-str);border-radius:var(--radius);font:inherit;font-size:15px;
  transition:border-color var(--t),background var(--t);
}
.field textarea{resize:vertical;min-height:120px}
.field input::placeholder,.field textarea::placeholder{color:#63748a}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--accent);background:#0e161f}
.field.is-invalid input,.field.is-invalid textarea,.field.is-invalid .filebox{border-color:#ef4444}
.err{display:none;margin-top:6px;font-size:13px;color:#f87171}
.field.is-invalid .err{display:block}

.filebox{
  display:flex!important;align-items:center;gap:14px;padding:14px 16px;cursor:pointer;
  border:1px dashed var(--line-str);border-radius:var(--radius);background:#111a25;
  text-transform:none!important;letter-spacing:0!important;font-size:15px!important;color:var(--ink)!important;
  transition:border-color var(--t),background var(--t);
}
.filebox:hover{border-color:var(--accent);background:#0e161f}
.filebox input{position:absolute;width:1px;height:1px;opacity:0;pointer-events:none}
.filebox__icon{
  flex:none;width:34px;height:34px;display:grid;place-items:center;border-radius:var(--radius);
  background:var(--accent-soft);color:var(--accent);font-size:20px;font-weight:700;line-height:1;
}
.filebox__text{display:flex;flex-direction:column;font-weight:600;font-size:14px;gap:2px}
.filebox__text small{font-weight:400;color:var(--muted);font-size:12px}

.check{display:flex;gap:11px;align-items:flex-start;margin:6px 0 20px;font-size:13px;color:var(--muted);cursor:pointer}
.check input{margin:2px 0 0;width:17px;height:17px;accent-color:var(--accent);flex:none}
.form__status{margin:14px 0 0;font-size:14px;min-height:20px}
.form__status.is-ok{color:#4ade80}
.form__status.is-err{color:#f87171}

/* ---------- Контакты ---------- */
.contacts{display:grid;grid-template-columns:1fr 1fr;gap:40px;align-items:start}
.contact-list{display:grid;gap:2px;margin-bottom:28px}
.contact-list li{display:grid;grid-template-columns:150px 1fr;gap:16px;padding:16px 0;border-bottom:1px solid var(--line)}
.contact-list__label{font-size:12px;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);padding-top:3px}
.contact-list__value{font-size:16px;font-weight:600}
a.contact-list__value:hover,.contact-list__value a:hover{color:var(--accent)}
.contact-list__value a{border-bottom:1px solid var(--line-str)}

.map{border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:#0b1017}
.map iframe{width:100%;height:280px;border:0;display:block;filter:grayscale(.5) invert(.9) hue-rotate(180deg) contrast(.9)}
.map__link{margin-top:12px}
.map__link a{border-bottom:1px solid var(--line-str)}
.map__link a:hover{color:var(--accent)}

/* ---------- Подвал ---------- */
.footer{background:#0b1017;border-top:1px solid var(--line);padding:64px 0 26px;font-size:14px}
.footer__inner{display:grid;grid-template-columns:1.6fr 1fr 1.2fr 1fr;gap:40px}
.footer__col h4{font-size:13px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted);margin-bottom:16px}
.footer__col a{display:block;color:#c2ccd9;padding:5px 0;transition:color var(--t)}
.footer__col a:hover{color:var(--accent)}
.footer__col p{color:var(--muted);line-height:1.7}
.brand--footer{margin:0 0 18px}
.footer__about{max-width:34ch}
.footer__bottom{
  display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;
  margin-top:44px;padding-top:22px;border-top:1px solid var(--line);color:var(--muted);font-size:13px;
}
.footer__bottom a:hover{color:var(--accent)}

/* ---------- Плавающая кнопка WhatsApp ---------- */
.fab{
  position:fixed;right:20px;bottom:20px;z-index:90;width:56px;height:56px;border-radius:50%;
  display:grid;place-items:center;background:#25d366;
  box-shadow:0 10px 26px rgba(0,0,0,.4);transition:transform var(--t);
}
.fab:hover{transform:scale(1.07)}
.fab svg{width:32px;height:32px}

/* ---------- Лайтбокс ---------- */
.lightbox{position:fixed;inset:0;z-index:150;background:rgba(7,10,15,.94);display:grid;place-items:center;padding:24px}
.lightbox[hidden]{display:none}
.lightbox img{max-width:min(1100px,92vw);max-height:88vh;width:auto;border-radius:var(--radius)}
.lightbox__close{
  position:absolute;top:16px;right:20px;width:44px;height:44px;font-size:28px;line-height:1;
  background:none;border:1px solid var(--line-str);border-radius:var(--radius);
}
.lightbox__close:hover{border-color:var(--accent);color:var(--accent)}

/* ---------- Анимация появления ---------- */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .55s ease,transform .55s ease}
.reveal.is-in{opacity:1;transform:none}

/* ============================================================
   Адаптив
   ============================================================ */
@media (max-width:1080px){
  .footer__inner{grid-template-columns:1fr 1fr}
  .header__phone{display:none}
}
@media (max-width:900px){
  .about,.request,.contacts{grid-template-columns:1fr;gap:36px}
  .about__media{padding-right:0;padding-bottom:0;order:-1}
  .about__media-sm{display:none}
  .section{padding:72px 0}
}
@media (max-width:760px){
  .burger{display:block}
  .header__actions .btn{display:none}
  .nav{
    position:fixed;inset:var(--head-h) 0 auto;flex-direction:column;gap:0;
    background:#0d141d;border-bottom:1px solid var(--line);padding:10px 20px 22px;
    transform:translateY(-120%);transition:transform var(--t);box-shadow:var(--shadow);
  }
  .nav.is-open{transform:none}
  .nav__link{padding:14px 0;font-size:16px;border-bottom:1px solid var(--line)}
  .nav__link::after{left:0;right:auto;width:26px;bottom:6px}
  .nav__mobile{display:block}
  .nav__mobile-phone{padding:14px 0;font-size:17px;font-weight:700;border-bottom:1px solid var(--line)}
  .nav .btn{margin-top:18px;width:100%}
  .hero{min-height:auto;padding:calc(var(--head-h) + 48px) 0 72px}
  .hero__cta{margin-bottom:40px}
  .hero__cta .btn{flex:1 1 100%}
  .hero__facts{grid-auto-flow:row;grid-auto-columns:auto;grid-template-rows:none;gap:18px}
  .hero__facts li{grid-row:auto;grid-template-rows:none}
  .hero__scroll{display:none}
  .form{padding:24px 20px}
  .contact-list li{grid-template-columns:1fr;gap:4px}
  .footer__inner{grid-template-columns:1fr;gap:32px}
  .fab{width:52px;height:52px;right:14px;bottom:14px}
}

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