/* ============================================================
   БАЗОВЫЕ ПЕРЕМЕННЫЕ (заменяются темой)
   ============================================================ */
:root {
  --font-main:'Inter','Segoe UI',Arial,sans-serif;
  --radius:8px;
  --shadow:0 2px 12px rgba(0,0,0,.10);
  --shadow-lg:0 8px 32px rgba(0,0,0,.15);
  --trans:.2s ease;
  --container:1200px;
  --gap:24px;
}

/* ============================================================
   СБРОС
   ============================================================ */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px}
body{font-family:var(--font-main);color:var(--color-text);background:#fff;line-height:1.6}
img{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
ul,ol{list-style:none}
address{font-style:normal}
input,select,textarea,button{font:inherit}

.container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px}

/* ============================================================
   КНОПКИ
   ============================================================ */
.btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:12px 24px;border-radius:var(--radius);
  font-weight:700;font-size:.95rem;letter-spacing:.01em;
  border:2px solid transparent;cursor:pointer;
  transition:background var(--trans),color var(--trans),border-color var(--trans),transform var(--trans);
  white-space:nowrap;
}
.btn:hover{transform:translateY(-2px)}
.btn:active{transform:translateY(0)}

.btn--primary{
  background:var(--btn-primary-bg);
  color:var(--btn-primary-color);
  border-color:var(--btn-primary-border);
}
.btn--primary:hover{
  background:var(--btn-primary-hover-bg);
  border-color:var(--btn-primary-hover-border);
}

/* outline — на светлом фоне */
.btn--outline{
  background:transparent;
  color:var(--btn-outline-color);
  border-color:var(--btn-outline-border);
}
.btn--outline:hover{
  background:var(--btn-outline-hover-bg);
  color:var(--btn-outline-hover-color);
}

/* outline — на тёмном hero-фоне */
.btn--hero-outline{
  background:transparent;
  color:var(--btn-hero-outline-color);
  border-color:var(--btn-hero-outline-border);
}
.btn--hero-outline:hover{
  background:var(--btn-hero-outline-hover-bg);
  color:var(--btn-hero-outline-hover-color);
}

.btn--lg{padding:15px 32px;font-size:1.05rem}
.btn--block{width:100%;justify-content:center;white-space:normal;text-align:center;line-height:1.3}

/* ============================================================
   ШАПКА
   ============================================================ */
.site-header{position:sticky;top:0;z-index:900;box-shadow:var(--shadow)}

.header-top{
  background:var(--color-dark-2);
  color:rgba(255,255,255,.65);
  font-size:.8rem;padding:6px 0;
}
.header-top__inner{display:flex;align-items:center;gap:24px;flex-wrap:wrap}
.header-top__inner>*{display:flex;align-items:center;gap:6px}
.header-top__email a{color:rgba(255,255,255,.65)}
.header-top__email a:hover{color:#fff}

.header-main{background:#fff;padding:14px 0}
.header-main__inner{display:flex;align-items:center;gap:20px}

.header-logo{display:flex;align-items:center;gap:10px;flex-shrink:0}
.header-logo__icon{font-size:2rem;line-height:1}
.header-logo__text{display:flex;flex-direction:column;line-height:1.15}
.header-logo__text strong{font-size:1.1rem;font-weight:800;color:var(--color-dark)}
.header-logo__text em{font-size:.72rem;font-style:normal;color:var(--color-text-light);letter-spacing:.06em;text-transform:uppercase}

.header-contacts{margin-left:auto;display:flex;align-items:center;gap:16px}
.header-contacts__label{font-size:.7rem;color:var(--color-text-light)}
.header-contacts__phone{font-size:1.2rem;font-weight:800;color:var(--color-dark);white-space:nowrap}
.header-contacts__phone:hover{color:var(--color-primary)}
.header-contacts__phone-wrap{display:flex;flex-direction:column}
.header-contacts__actions{display:flex;gap:8px}

.btn-wa,.btn-tg{
  display:flex;align-items:center;justify-content:center;
  width:38px;height:38px;border-radius:50%;
  transition:transform var(--trans),opacity var(--trans);
}
.btn-wa{background:var(--color-wa);color:#fff}
.btn-tg{background:var(--color-tg);color:#fff}
.btn-wa:hover,.btn-tg:hover{transform:scale(1.1);opacity:.9}

.burger{
  display:none;flex-direction:column;gap:5px;
  width:36px;height:36px;justify-content:center;align-items:center;
  background:none;border:none;cursor:pointer;padding:4px;margin-left:auto;
}
.burger span{display:block;width:24px;height:2px;background:var(--color-dark);transition:transform var(--trans),opacity var(--trans)}
.burger.active span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.burger.active span:nth-child(2){opacity:0}
.burger.active span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

/* ============================================================
   НАВИГАЦИЯ
   ============================================================ */
.site-nav{background:var(--color-nav-bg);position:relative;z-index:800}
.site-nav__inner{display:flex;align-items:center;justify-content:space-between;height:48px}

.nav-menu{display:flex;align-items:stretch;height:100%}
.nav-menu__item{position:relative;display:flex;align-items:center}
.nav-menu__link{
  display:flex;align-items:center;gap:4px;padding:0 15px;height:100%;
  color:var(--color-nav-link);font-size:.88rem;font-weight:600;
  transition:color var(--trans),background var(--trans);white-space:nowrap;
}
.nav-menu__link:hover,.nav-menu__item:hover>.nav-menu__link{
  color:#fff;background:rgba(255,255,255,.09);
}
.nav-menu__arrow{transition:transform var(--trans)}
.nav-menu__item:hover .nav-menu__arrow{transform:rotate(180deg)}

/* Мегаменю */
.nav-sub{
  position:absolute;top:100%;left:0;background:#fff;
  min-width:700px;padding:28px;
  box-shadow:var(--shadow-lg);border-radius:0 0 var(--radius) var(--radius);
  display:grid;grid-template-columns:repeat(3,1fr);gap:24px;
  opacity:0;pointer-events:none;transform:translateY(-6px);
  transition:opacity var(--trans),transform var(--trans);
  border-top:3px solid var(--color-primary);
}
.nav-menu__item:hover .nav-sub{opacity:1;pointer-events:all;transform:none}

.nav-sub__group{display:flex;flex-direction:column;gap:6px}
.nav-sub__label{
  font-size:.72rem;font-weight:800;text-transform:uppercase;
  letter-spacing:.08em;color:var(--color-text-light);margin-bottom:4px;
}
.nav-sub a{font-size:.87rem;color:var(--color-text);padding:3px 0;border-bottom:1px solid transparent}
.nav-sub a:hover{color:var(--color-primary);border-color:var(--color-primary)}

.nav-phone{
  display:flex;align-items:center;gap:6px;
  color:var(--color-nav-link);font-size:.88rem;font-weight:700;
  white-space:nowrap;padding:0 0 0 16px;border-left:1px solid rgba(255,255,255,.15);
}
.nav-phone:hover{color:#fff}

/* ============================================================
   HERO
   ============================================================ */
.hero{
  position:relative;min-height:580px;display:flex;align-items:center;
  overflow:hidden;padding:64px 0;
  background:var(--color-hero-bg);
}
.hero__bg{
  position:absolute;inset:0;
  background:var(--color-hero-bg);
}
.hero__inner{position:relative;z-index:2}
.hero__content{max-width:700px}

.hero__label{
  display:inline-flex;align-items:center;gap:8px;
  font-size:.78rem;color:rgba(255,255,255,.55);
  letter-spacing:.07em;text-transform:uppercase;margin-bottom:16px;
}
.hero__label::before{content:'';display:block;width:28px;height:2px;background:var(--color-primary)}

.hero__title{
  font-size:clamp(2rem,5vw,3.4rem);font-weight:900;
  color:var(--color-hero-title);line-height:1.12;margin-bottom:20px;
}
.hero__title span{color:var(--color-primary)}

.hero__sub{
  font-size:1.08rem;color:var(--color-hero-sub);
  margin-bottom:36px;max-width:560px;line-height:1.65;
}

.hero__badges{display:flex;gap:12px;flex-wrap:wrap;margin-bottom:40px}
.hero__badge{
  background:var(--color-badge-bg);border:1px solid var(--color-badge-border);
  border-radius:var(--radius);padding:12px 18px;
  display:flex;flex-direction:column;gap:3px;
}
.hero__badge strong{color:var(--color-primary);font-size:1.1rem;font-weight:800}
.hero__badge span{color:rgba(255,255,255,.6);font-size:.75rem}

.hero__actions{display:flex;gap:14px;flex-wrap:wrap}

/* ============================================================
   СЕКЦИИ
   ============================================================ */
.section-title{
  font-size:clamp(1.5rem,3vw,2.2rem);font-weight:900;
  color:var(--color-dark);text-align:center;margin-bottom:12px;
}
.section-title span{color:var(--color-primary)}
.section-sub{
  text-align:center;color:var(--color-text-light);
  max-width:540px;margin:0 auto 48px;font-size:1rem;
}

/* ============================================================
   УСЛУГИ
   ============================================================ */
.services-section{padding:80px 0;background:var(--color-bg)}

.services-grid{
  display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));
  gap:var(--gap);margin-bottom:40px;
}
.service-card{
  background:#fff;border-radius:var(--radius);padding:28px 24px;
  border:2px solid var(--color-border);
  display:flex;flex-direction:column;gap:10px;
  transition:box-shadow var(--trans),transform var(--trans),border-color var(--trans);
  position:relative;overflow:hidden;cursor:pointer;
}
.service-card:hover{box-shadow:var(--shadow-lg);transform:translateY(-3px);border-color:var(--color-primary)}
.service-card__icon{font-size:2.4rem;line-height:1}
.service-card__title{font-size:1rem;font-weight:800;color:var(--color-dark)}
.service-card__text{font-size:.87rem;color:var(--color-text-light);line-height:1.55;flex:1}
.service-card__price{
  font-size:.9rem;font-weight:800;color:var(--color-dark);
  background:var(--color-primary);
  display:inline-block;padding:3px 10px;border-radius:4px;
  margin-top:4px;align-self:flex-start;
}
.service-card__badge{
  position:absolute;top:12px;right:12px;
  background:var(--color-primary);color:var(--color-primary-text);
  font-size:.68rem;font-weight:800;padding:3px 9px;border-radius:20px;
}
.services-section__cta{text-align:center}

/* ============================================================
   ПРЕИМУЩЕСТВА
   ============================================================ */
.advantages{padding:80px 0;background:#fff}

.advantages-grid{
  display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));
  gap:var(--gap);margin-top:48px;
}
.advantage{
  padding:28px 24px;border-radius:var(--radius);
  background:var(--color-bg);border-left:4px solid var(--color-primary);
}
.advantage__icon{font-size:2rem;margin-bottom:12px}
.advantage h3{font-size:1rem;font-weight:800;margin-bottom:8px}
.advantage p{font-size:.88rem;color:var(--color-text-light);line-height:1.55}

/* ============================================================
   ФОРМА
   ============================================================ */
.callback-section{padding:80px 0;background:var(--color-callback-bg)}
.callback-section__inner{
  display:grid;grid-template-columns:1fr 1fr;gap:64px;align-items:center;
}
.callback-section__title{font-size:clamp(1.4rem,2.5vw,2rem);font-weight:900;color:#fff;margin-bottom:12px}
.callback-section__sub{color:rgba(255,255,255,.65);margin-bottom:24px}
.callback-section__benefits{display:flex;flex-direction:column;gap:12px}
.callback-section__benefits li{display:flex;align-items:center;gap:10px;color:rgba(255,255,255,.85);font-size:.92rem}

.callback-form{background:#fff;border-radius:var(--radius);padding:32px;display:flex;flex-direction:column;gap:16px;box-shadow:var(--shadow-lg)}
.form-label{font-size:.8rem;font-weight:700;color:var(--color-text-light);margin-bottom:4px;display:block}
.required{color:var(--color-primary)}
.form-field{display:flex;flex-direction:column}
.form-input{
  width:100%;padding:11px 14px;border:2px solid var(--color-border);
  border-radius:var(--radius);font-size:.95rem;color:var(--color-text);
  transition:border-color var(--trans);background:#fff;
}
.form-input:focus{outline:none;border-color:var(--color-primary)}
.form-textarea{resize:vertical;min-height:80px}
.form-select{appearance:none;cursor:pointer}
.checkbox-label{display:flex;align-items:flex-start;gap:10px;cursor:pointer;font-size:.83rem;color:var(--color-text-light)}
.checkbox-input{position:absolute;opacity:0;width:0;height:0}
.checkbox-custom{flex-shrink:0;width:18px;height:18px;margin-top:2px;border:2px solid var(--color-border);border-radius:4px;background:#fff;transition:border-color var(--trans),background var(--trans)}
.checkbox-input:checked+.checkbox-custom{background:var(--color-primary);border-color:var(--color-primary)}
.form-success{background:#e8f5e9;color:#2e7d32;padding:12px 16px;border-radius:var(--radius);font-weight:700;font-size:.92rem;text-align:center}

/* ============================================================
   ФУТЕР
   ============================================================ */
.site-footer{background:var(--color-dark);color:rgba(255,255,255,.7)}
.footer__inner{
  display:grid;grid-template-columns:2fr 1fr 1fr 1.4fr;
  gap:48px;padding:56px 20px 40px;
}
.footer-logo{display:flex;align-items:center;gap:10px;margin-bottom:16px}
.footer-logo__icon{font-size:1.8rem}
.footer-logo__text{display:flex;flex-direction:column;font-size:1rem}
.footer-logo__text strong{color:var(--color-primary);font-weight:800}
.footer-logo__text em{font-size:.7rem;font-style:normal;color:rgba(255,255,255,.45);letter-spacing:.06em;text-transform:uppercase}
.footer__desc{font-size:.86rem;line-height:1.6;margin-bottom:20px}
.footer__social{display:flex;gap:10px}
.footer__social-link{
  display:flex;align-items:center;justify-content:center;
  width:36px;height:36px;border-radius:50%;color:#fff;
  transition:transform var(--trans),opacity var(--trans);
}
.footer__social-link:hover{transform:scale(1.1)}
.footer__social-link--wa{background:var(--color-wa)}
.footer__social-link--tg{background:var(--color-tg)}
.footer__social-link--vk{background:var(--color-vk)}
.footer__title{font-size:.75rem;font-weight:800;text-transform:uppercase;letter-spacing:.08em;color:rgba(255,255,255,.35);margin-bottom:16px}
.footer__list li+li{margin-top:8px}
.footer__list a{font-size:.87rem;color:rgba(255,255,255,.65);transition:color var(--trans)}
.footer__list a:hover{color:var(--color-primary)}
.footer__contacts p{display:flex;align-items:flex-start;gap:8px;font-size:.87rem;margin-bottom:10px}
.footer__contacts svg{flex-shrink:0;margin-top:3px;opacity:.5}
.footer__contacts a{color:rgba(255,255,255,.8)}
.footer__contacts a:hover{color:var(--color-primary)}
.footer__bottom{border-top:1px solid rgba(255,255,255,.08);padding:20px}
.footer__bottom-inner{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:8px}
.footer__copy,.footer__legal{font-size:.8rem}
.footer__legal a{color:rgba(255,255,255,.45);margin:0 4px}
.footer__legal a:hover{color:#fff}

/* ============================================================
   WHATSAPP КНОПКА
   ============================================================ */
.wa-float{
  position:fixed;bottom:28px;right:28px;z-index:9999;
  display:flex;align-items:center;gap:10px;
  background:var(--color-wa);color:#fff;
  padding:12px 20px;border-radius:50px;
  box-shadow:0 4px 20px rgba(37,211,102,.45);
  font-weight:700;font-size:.9rem;
  transition:transform var(--trans),box-shadow var(--trans);
}
.wa-float:hover{transform:translateY(-3px);box-shadow:0 8px 28px rgba(37,211,102,.6)}
.wa-float__label{white-space:nowrap}

/* ============================================================
   ПЕРЕКЛЮЧАТЕЛЬ ТЕМ
   ============================================================ */
.theme-switcher{
  position:fixed;bottom:28px;left:28px;z-index:9999;
  background:#fff;border:2px solid var(--color-border);
  border-radius:50px;padding:8px 16px;
  box-shadow:var(--shadow-lg);
  display:flex;align-items:center;gap:10px;font-size:.82rem;font-weight:700;
}
.theme-switcher__label{color:var(--color-text-light)}
.theme-btn{
  padding:5px 12px;border-radius:20px;border:2px solid transparent;
  cursor:pointer;font-size:.78rem;font-weight:800;transition:all var(--trans);
}
.theme-btn--dark{background:#1C1C1E;color:#FFD600;border-color:#1C1C1E}
.theme-btn--red{background:#D32F2F;color:#FFD600;border-color:#D32F2F}
.theme-btn.active{box-shadow:0 0 0 2px rgba(0,0,0,.2);transform:scale(1.05)}

/* ============================================================
   МОБИЛЬНЫЙ АДАПТИВ
   ============================================================ */
@media(max-width:1024px){
  .footer__inner{grid-template-columns:1fr 1fr}
  .nav-sub{min-width:440px;grid-template-columns:1fr 1fr}
}

@media(max-width:768px){
  .burger{display:flex}
  .header-contacts__cta{display:none}

  .site-nav{display:none}
  .site-nav.open{display:block}
  .site-nav__inner{height:auto;flex-direction:column;align-items:flex-start;padding:8px 20px 16px}
  .nav-menu{flex-direction:column;width:100%;height:auto}
  .nav-menu__item{width:100%}
  .nav-menu__link{padding:12px 0;width:100%;justify-content:space-between;border-bottom:1px solid rgba(255,255,255,.1)}
  .nav-sub{position:static;display:none;grid-template-columns:1fr;padding:12px 0;box-shadow:none;background:rgba(255,255,255,.05);border-radius:0;opacity:1;pointer-events:all;transform:none;min-width:0;border-top:none}
  .nav-menu__item.open .nav-sub{display:grid}
  .nav-phone{padding:12px 0;border:none}

  .hero{min-height:auto;padding:48px 0}
  .hero__actions{flex-direction:column}
  .hero__badges{gap:8px}
  .hero__badge{padding:10px 14px}

  .callback-section__inner{grid-template-columns:1fr;gap:36px}
  .footer__inner{grid-template-columns:1fr;gap:32px;padding:40px 20px}
  .footer__bottom-inner{flex-direction:column;text-align:center}

  .wa-float__label{display:none}
  .wa-float{padding:14px;border-radius:50%}
  .theme-switcher{bottom:90px}
}

@media(max-width:480px){
  .services-grid,.advantages-grid{grid-template-columns:1fr}
  .header-contacts__actions{display:none}
}

/* ============================================================
   КАЛЬКУЛЯТОР СТОИМОСТИ
   ============================================================ */
.calc-section { padding: 80px 0; background: #fff; }
.calc-box {
  background: var(--color-bg);
  border: 2px solid var(--color-border);
  border-radius: var(--radius);
  padding: 40px;
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 40px;
}
.calc-form { display: flex; flex-direction: column; gap: 20px; }
.calc-group { display: flex; flex-direction: column; gap: 8px; }
.calc-label { font-weight: 700; font-size: .95rem; color: var(--color-dark); }
.calc-options { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 10px; }
.calc-radio { position: absolute; opacity: 0; }
.calc-btn {
  display: block; text-align: center; padding: 12px; background: #fff;
  border: 2px solid var(--color-border); border-radius: var(--radius);
  font-size: .88rem; font-weight: 600; cursor: pointer; transition: all var(--trans);
}
.calc-radio:checked + .calc-btn {
  border-color: var(--color-primary); background: var(--color-primary);
  color: var(--color-primary-text); font-weight: 800;
}
.calc-range-wrap { display: flex; align-items: center; gap: 16px; }
.calc-range { flex: 1; accent-color: var(--color-primary); cursor: pointer; }
.calc-range-val { font-weight: 800; font-size: 1.1rem; color: var(--color-dark); min-width: 90px; text-align: right; }

.calc-result {
  background: var(--color-dark); color: #fff; border-radius: var(--radius);
  padding: 32px; display: flex; flex-direction: column; justify-content: space-between; text-align: center;
}
.calc-result__title { font-size: .85rem; text-transform: uppercase; letter-spacing: .08em; color: rgba(255,255,255,.6); }
.calc-result__price { font-size: 2.2rem; font-weight: 900; color: var(--color-primary); margin: 16px 0 8px; }
.calc-result__sub { font-size: .82rem; color: rgba(255,255,255,.5); margin-bottom: 24px; }

/* ============================================================
   ПОРТФОЛИО НА ГЛАВНОЙ
   ============================================================ */
.home-portfolio { padding: 80px 0; background: var(--color-bg); }
.portfolio-preview-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: var(--gap); margin-bottom: 40px; }

/* ============================================================
   SEO-БЛОК НА ГЛАВНОЙ
   ============================================================ */
.seo-section { padding: 80px 0; background: #fff; }
.seo-content { max-width: 900px; margin: 0 auto; font-size: .95rem; line-height: 1.75; color: var(--color-text); }
.seo-content h2 { font-size: 1.6rem; font-weight: 900; color: var(--color-dark); margin: 32px 0 16px; }
.seo-content h2:first-child { margin-top: 0; }
.seo-content p { margin-bottom: 16px; }
.seo-content ul { margin: 16px 0 24px 20px; list-style: disc; }
.seo-content li { margin-bottom: 8px; }

@media(max-width: 900px) {
  .calc-box { grid-template-columns: 1fr; gap: 28px; padding: 24px; }
}

.calc-result .btn {
  white-space: normal;
  text-align: center;
  line-height: 1.3;
  padding: 14px 16px;
  word-break: normal;
  display: flex;
  justify-content: center;
  align-items: center;
}