/* ═══════════════════════════════════════════════
   СЭМ (СибЭнергоМет) — Design System
   Тёмный индустриальный стиль
════════════════════════════════════════════════ */

:root {
  --dark:    #0f0f0f;
  --dark2:   #1a1a1a;
  --dark3:   #242424;
  --red:     #CC2229;
  --red-dk:  #a81b21;
  --white:   #FAFAFA;
  --text:    #1a1a1a;
  --muted:   #737373;
  --hint:    #525252;
  --border:  #2a2a2a;
  --border-l:#e5e7eb;
  --bg:      #ffffff;
  --bg-soft: #f5f5f5;
  --card:    #f5f5f5;
  --font:    'Helvetica Neue',Arial,sans-serif;
  --r:       0px;
  /* Совместимость со старым CSS */
  --orange:  #CC2229;
  --orange2: #a81b21;
  --navy:    #f5f5f5;
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font);color:var(--text);background:var(--bg);font-size:16px;line-height:1.6}
a{color:inherit;text-decoration:none}

/* ─── ШАПКА (тёмная) ─── */
.hdr,.site-header{background:var(--dark);position:sticky;top:0;z-index:100}
.hdr-in,.header-inner{max-width:1280px;margin:0 auto;padding:0 24px;display:flex;align-items:center;height:64px;gap:16px}
.logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.logo img{height:34px;width:auto;filter:brightness(0) invert(1)}
.logo-txt{line-height:1.2}
.logo-name{font-size:15px;font-weight:700;color:#fff;letter-spacing:.02em}
.logo-tag{font-size:10px;color:rgba(255,255,255,.4);letter-spacing:.1em;text-transform:uppercase}
.hdr-nav,.header-nav{display:flex;gap:0;flex:1;justify-content:center}
.hdr-nav a,.header-nav a{font-size:13px;color:rgba(255,255,255,.6);font-weight:500;white-space:nowrap;padding:6px 14px;transition:color .15s;letter-spacing:.01em}
.hdr-nav a:hover,.header-nav a:hover,.hdr-nav a.active,.header-nav a.active{color:#fff}
.hdr-cta{display:flex;align-items:center;gap:8px;flex-shrink:0}
.btn-max,.btn-tg,.btn-wa{color:rgba(255,255,255,.7);font-size:12px;font-weight:600;padding:5px 10px;display:inline-flex;align-items:center;gap:4px;transition:color .15s;border-radius:0}
.btn-max:hover,.btn-tg:hover,.btn-wa:hover{color:#fff}
.btn-ph,.header-phone{background:var(--red);color:#fff;font-size:13px;font-weight:700;padding:9px 20px;white-space:nowrap;transition:background .15s;letter-spacing:.02em;border-radius:0}
.btn-ph:hover,.header-phone:hover{background:var(--red-dk)}
.nav-tog,.nav-toggle{display:none;background:none;border:1px solid rgba(255,255,255,.2);color:#fff;padding:6px 10px;font-size:18px;cursor:pointer;line-height:1}

/* ─── ХЛЕБНЫЕ КРОШКИ ─── */
.breadcrumb{max-width:1280px;margin:0 auto;padding:16px 24px 0;display:flex;gap:8px;align-items:center;font-size:13px;color:var(--muted)}
.breadcrumb a{color:var(--muted);transition:color .15s}
.breadcrumb a:hover{color:var(--dark)}
.breadcrumb span{color:var(--muted)}

/* ─── ОБЁРТКИ ─── */
.wrap{max-width:1280px;margin:0 auto;padding:0 24px}
.section{max-width:1280px;margin:64px auto 0;padding:0 24px}
.section:last-of-type{margin-bottom:80px}
.sec{padding:72px 24px}
.sec-alt{background:var(--bg-soft)}
.sec-lbl{font-size:11px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--red);margin-bottom:10px}
.sec-ttl{font-size:clamp(24px,3.5vw,44px);font-weight:700;color:var(--dark);margin-bottom:10px;line-height:1.05;letter-spacing:-.03em}

/* ─── ЗАГОЛОВКИ СЕКЦИЙ ─── */
.section-title{font-size:22px;font-weight:700;margin-bottom:24px;padding-bottom:12px;border-bottom:1px solid var(--border-l);display:flex;align-items:center;gap:12px}
.section-title::before{content:'';display:block;width:3px;height:22px;background:var(--red);flex-shrink:0}

/* ─── СТРАНИЧНЫЙ HERO ─── */
.page-hero{background:var(--dark2);padding:40px 24px;border-bottom:3px solid var(--red)}
.page-hero-in{max-width:1280px;margin:0 auto}
.page-hero .ph-lbl{font-size:11px;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--red);margin-bottom:10px}
.page-hero h1{font-size:clamp(28px,4vw,52px);font-weight:700;color:#fff;line-height:1.05;letter-spacing:-.03em;margin-bottom:8px}
.page-hero p{font-size:16px;color:rgba(255,255,255,.55)}

/* ─── HERO старый (для совместимости с product_page) ─── */
.hero{max-width:1280px;margin:48px auto 0;padding:0 24px;display:grid;grid-template-columns:1fr 380px;gap:48px;align-items:start}
.hero-label{font-size:12px;font-weight:600;letter-spacing:.15em;color:var(--red);text-transform:uppercase;margin-bottom:12px}
.hero h1{font-size:clamp(26px,3.5vw,44px);font-weight:700;line-height:1.1;margin-bottom:14px;letter-spacing:-.02em}
.hero h1 em{color:var(--red);font-style:normal}
.hero-desc{font-size:16px;color:var(--muted);margin-bottom:24px;max-width:600px;line-height:1.7}
.hero-tags{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:28px}
.tag{background:var(--bg-soft);border:1px solid var(--border-l);color:var(--muted);font-size:13px;padding:6px 14px}
.tag.accent{border-color:var(--red);color:var(--red)}

/* ─── КАРТОЧКА ХАРАКТЕРИСТИК ─── */
.spec-card{background:#fff;border:1px solid var(--border-l);border-top:3px solid var(--red);padding:28px 24px}
.spec-card h3{font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--red);margin-bottom:20px;font-weight:700}
.spec-row{display:flex;justify-content:space-between;align-items:baseline;padding:10px 0;border-bottom:1px solid var(--border-l);gap:12px}
.spec-row:last-child{border-bottom:none}
.spec-label{font-size:13px;color:var(--muted)}
.spec-value{font-size:14px;font-weight:600;color:var(--text);text-align:right}
.spec-value.big{font-size:24px;color:var(--red)}

/* ─── ФОРМА (на белом фоне product pages) ─── */
.lead-form{background:var(--bg-soft);border:1px solid var(--border-l);border-left:3px solid var(--red);padding:28px 24px;margin-top:24px}
.lead-form h3{font-size:16px;font-weight:700;margin-bottom:6px;color:var(--dark)}
.lead-form p{font-size:13px;color:var(--muted);margin-bottom:20px}
.form-group{margin-bottom:14px}
.form-group label{display:block;font-size:11px;color:var(--muted);margin-bottom:6px;letter-spacing:.08em;text-transform:uppercase;font-weight:600}
.form-group input,.form-group select,.form-group textarea{width:100%;background:#fff;border:1px solid var(--border-l);color:var(--text);font-size:14px;padding:10px 14px;outline:none;transition:border-color .15s;font-family:var(--font);border-radius:0}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{border-color:var(--red)}
.form-group textarea{resize:vertical;min-height:80px}
.btn-primary{background:var(--red);color:#fff;border:none;font-size:14px;font-weight:700;padding:14px 28px;cursor:pointer;width:100%;letter-spacing:.04em;text-transform:uppercase;transition:background .15s;font-family:var(--font);border-radius:0}
.btn-primary:hover{background:var(--red-dk)}
.form-note{font-size:11px;color:var(--muted);margin-top:10px;text-align:center}

/* ─── ТЕКСТОВЫЙ КОНТЕНТ ─── */
.content-text p{margin-bottom:16px;color:var(--text);line-height:1.75}
.content-text p:last-child{margin-bottom:0}

/* ─── ТАБЛИЦА ХАРАКТЕРИСТИК ─── */
.specs-table{width:100%;border-collapse:collapse;font-size:14px}
.specs-table th{background:var(--bg-soft);color:var(--red);font-size:11px;letter-spacing:.1em;text-transform:uppercase;padding:12px 16px;text-align:left;border-bottom:2px solid var(--border-l);font-weight:700}
.specs-table td{padding:12px 16px;border-bottom:1px solid var(--border-l);color:var(--text)}
.specs-table tr:hover td{background:var(--bg-soft)}

/* ─── ПРЕИМУЩЕСТВА ─── */
.benefits{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:1px;background:var(--border-l);margin-top:8px}
.benefit{background:#fff;padding:24px}
.benefit-num{font-size:40px;font-weight:700;color:var(--red);line-height:1;margin-bottom:8px;letter-spacing:-.03em}
.benefit-label{font-size:13px;color:var(--muted);line-height:1.5}

/* ─── ФОТО-CTA БЛОК ─── */
.foto-cta-sec{padding:0 24px;max-width:1280px;margin:48px auto}
.foto-cta{background:var(--dark2);border-left:4px solid var(--red);padding:28px 32px;display:flex;align-items:center;gap:24px;flex-wrap:wrap}
.foto-cta-icon{font-size:36px;flex-shrink:0}
.foto-cta-text{flex:1;min-width:200px}
.foto-cta-text h3{font-size:18px;font-weight:700;color:#fff;margin-bottom:6px;letter-spacing:-.01em}
.foto-cta-text p{font-size:14px;color:rgba(255,255,255,.55);line-height:1.6}
.foto-cta-btns{display:flex;gap:10px;flex-wrap:wrap;flex-shrink:0}
.foto-cta-btns .btn-primary{width:auto;padding:12px 24px}

/* ─── CTA БАННЕР PRODUCT PAGE ─── */
.cta-banner{background:var(--bg-soft);border:1px solid var(--border-l);border-left:4px solid var(--red);padding:32px 36px;display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
.cta-text h3{font-size:20px;font-weight:700;margin-bottom:6px;letter-spacing:-.01em}
.cta-text p{font-size:14px;color:var(--muted)}
.cta-actions{display:flex;gap:12px;flex-wrap:wrap}
.btn-outline{background:transparent;color:var(--red);border:1px solid var(--red);font-size:14px;font-weight:600;padding:12px 24px;cursor:pointer;text-decoration:none;display:inline-block;transition:all .15s;font-family:var(--font);letter-spacing:.03em}
.btn-outline:hover{background:var(--red);color:#fff}

/* ─── ДИАМЕТР-КАРТОЧКИ (type_diam_index_page) ─── */
.diam-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:1px;background:var(--border-l);margin-top:8px}
.diam-card{background:#fff;padding:24px}
.diam-card-head{margin-bottom:12px}
.dc-diam{display:block;font-size:28px;font-weight:700;color:var(--dark);letter-spacing:-.03em;line-height:1.1;margin-bottom:4px}
.dc-wall{display:block;font-size:13px;color:var(--muted);margin-bottom:2px}
.dc-steel{display:block;font-size:13px;color:var(--muted)}
.dc-price{font-size:22px;font-weight:700;color:var(--red);margin-bottom:14px;letter-spacing:-.02em}
.dc-price span{font-size:12px;font-weight:500;color:var(--muted)}
.dc-btns{display:flex;flex-direction:column;gap:8px}
.dc-cta{display:block;background:var(--dark);color:#fff;font-size:13px;font-weight:700;padding:10px 16px;text-align:center;transition:background .15s;letter-spacing:.03em;text-transform:uppercase}
.dc-cta:hover{background:var(--dark3)}
.dc-foto{display:block;background:var(--red);color:#fff;font-size:13px;font-weight:700;padding:10px 16px;text-align:center;transition:background .15s;letter-spacing:.03em;text-transform:uppercase}
.dc-foto:hover{background:var(--red-dk)}

/* ─── КАТАЛОГ КАРТОЧКИ ─── */
.catalog-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:1px;background:var(--border-l)}
.catalog-card{background:#fff;padding:24px;transition:background .15s;border-top:3px solid transparent}
.catalog-card:hover{background:var(--bg-soft);border-top-color:var(--red)}
.catalog-card h4{font-size:15px;font-weight:600;margin-bottom:8px;letter-spacing:-.01em}
.catalog-card h4 a{color:var(--text)}
.catalog-card h4 a:hover{color:var(--red)}
.catalog-card .card-meta{font-size:12px;color:var(--muted)}
.catalog-card .card-diam{font-size:32px;font-weight:700;color:var(--red);line-height:1;margin:12px 0 4px;letter-spacing:-.03em}
.catalog-card .card-unit{font-size:11px;color:var(--muted)}
.card-cta{display:inline-block;font-size:12px;font-weight:700;color:var(--dark);background:var(--bg-soft);border:1px solid var(--border-l);padding:7px 14px;transition:all .15s;letter-spacing:.04em;text-transform:uppercase}
.card-cta:hover{background:var(--red);border-color:var(--red);color:#fff}

/* ─── ФИЛЬТР КАТАЛОГА ─── */
.filter-bar{display:flex;gap:12px;flex-wrap:wrap;align-items:flex-end;margin-bottom:32px;padding:24px;background:var(--bg-soft);border-left:3px solid var(--red)}
.filter-group{display:flex;flex-direction:column;gap:6px;flex:1;min-width:160px}
.filter-group label{font-size:11px;font-weight:700;color:var(--muted);letter-spacing:.08em;text-transform:uppercase}
.filter-group select{width:100%;background:#fff;border:1px solid var(--border-l);color:var(--text);font-size:14px;padding:10px 14px;outline:none;font-family:var(--font);transition:border-color .15s;border-radius:0}
.filter-group select:focus{border-color:var(--red)}
.btn-filter{background:var(--dark);color:#fff;font-size:14px;font-weight:700;padding:10px 28px;border:none;cursor:pointer;font-family:var(--font);letter-spacing:.04em;text-transform:uppercase;transition:background .15s;white-space:nowrap;align-self:flex-end;height:44px;border-radius:0}
.btn-filter:hover{background:var(--red)}

/* ─── ФУТЕР (тёмный) ─── */
.ftr,.site-footer{background:var(--dark);color:rgba(255,255,255,.5);padding:56px 24px 28px;margin-top:80px}
.ftr-in,.footer-inner{max-width:1280px;margin:0 auto;display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:48px;margin-bottom:48px}
.ftr-logo img{height:34px;filter:brightness(0) invert(1);margin-bottom:14px}
.ftr-about{font-size:14px;line-height:1.75;margin-bottom:12px}
.ftr-inn{font-size:11px;opacity:.35}
.fcol,.footer-col{min-width:0}
.fcol h4,.footer-col h4{font-size:10px;font-weight:700;color:#fff;margin-bottom:16px;text-transform:uppercase;letter-spacing:.12em}
.fcol a,.footer-col a{display:block;font-size:13px;color:rgba(255,255,255,.45);margin-bottom:10px;transition:color .15s}
.fcol a:hover,.footer-col a:hover{color:#fff}
.fcol p,.footer-col p{font-size:13px;color:rgba(255,255,255,.35);margin-bottom:8px;line-height:1.5}
.ftr-bot,.footer-bottom{max-width:1280px;margin:0 auto;padding-top:24px;border-top:1px solid rgba(255,255,255,.08);display:flex;justify-content:space-between;font-size:11px;opacity:.3;flex-wrap:wrap;gap:8px}

/* ─── АДАПТИВ ПЛАНШЕТ ─── */
@media(max-width:960px){
  .hero{grid-template-columns:1fr}
  .ftr-in,.footer-inner{grid-template-columns:1fr 1fr}
  .hdr-nav a,.header-nav a{font-size:12px;padding:6px 10px}
}

/* ─── АДАПТИВ МОБИЛА ─── */
@media(max-width:600px){
  .hdr-in,.header-inner{height:56px;padding:0 16px}
  .hdr-nav,.header-nav{display:none}
  .hdr-nav.open,.header-nav.open{display:flex;flex-direction:column;position:fixed;top:56px;left:0;right:0;background:var(--dark);padding:16px;gap:2px;z-index:99;border-bottom:1px solid var(--border)}
  .hdr-nav.open a,.header-nav.open a{padding:12px 16px;font-size:15px;border-bottom:1px solid rgba(255,255,255,.05)}
  .nav-tog,.nav-toggle{display:block}
  .btn-max,.btn-tg,.btn-wa{display:none}
  .ftr-in,.footer-inner{grid-template-columns:1fr}
  .section{margin-top:40px}
  .filter-bar{flex-direction:column}
  .foto-cta{flex-direction:column}
  .cta-banner{flex-direction:column}
  .hero{margin-top:24px}
  .diam-grid,.catalog-grid{grid-template-columns:1fr 1fr}
  .page-hero{padding:28px 16px}
}