/* Основен CSS за сайта SISI KLIMA – светъл дизайн с сини и оранжеви акценти, responsive оформление и 100% hero/footer CTA секции. */
:root{
    --blue:#0576d8;
    --blue-dark:#053f73;
    --blue-soft:#eef7ff;
    --orange:#ff7600;
    --orange-dark:#d95e00;
    --ink:#15202b;
    --muted:#5d6975;
    --line:#e4e9ee;
    --white:#fff;
    --shadow:0 14px 40px rgba(12,50,85,.10);
    --radius:22px;
    --max:1180px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
    margin:0;
    font-family:Arial,Helvetica,sans-serif;
    color:var(--ink);
    background:#fff;
    line-height:1.6;
}
a{color:inherit}
img{max-width:100%;height:auto}
main{overflow:hidden}
.site-header{
    position:sticky;
    top:0;
    z-index:1000;
    background:rgba(255,255,255,.96);
    border-bottom:1px solid var(--line);
    backdrop-filter:blur(10px);
}
.header-inner{
    max-width:var(--max);
    margin:auto;
    min-height:82px;
    padding:10px 20px;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:25px;
}
.brand{
    display:flex;
    align-items:center;
    gap:12px;
    text-decoration:none;
    min-width:240px;
}
.brand-mark{
    width:60px;
    height:52px;
    position:relative;
    display:block;
}
.brand-mark:before,.brand-mark:after{
    content:"";
    position:absolute;
    width:34px;
    height:34px;
    transform:rotate(45deg);
    border:3px solid;
    top:7px;
}
.brand-mark:before{left:2px;border-color:var(--blue)}
.brand-mark:after{right:2px;border-color:var(--orange)}
.brand-mark .sun,.brand-mark .snow{
    position:absolute;
    z-index:2;
    font-size:19px;
    top:10px;
}
.brand-mark .sun{left:9px;color:var(--orange)}
.brand-mark .snow{right:8px;color:var(--blue)}
.brand-text{display:flex;flex-direction:column;line-height:1.05}
.brand-text strong{font-size:24px;letter-spacing:.4px}
.brand-text strong span{color:var(--blue)}
.brand-text small{margin-top:6px;text-transform:uppercase;font-size:10px;letter-spacing:1.2px;color:var(--muted)}
.main-nav{display:flex;align-items:center;gap:22px}
.main-nav a{text-decoration:none;font-weight:700;font-size:15px}
.main-nav a:hover{color:var(--blue)}
.nav-call{
    background:var(--orange);
    color:#fff!important;
    padding:12px 16px;
    border-radius:12px;
}
.menu-toggle{display:none;border:0;background:transparent;padding:8px}
.menu-toggle span{display:block;width:26px;height:3px;background:var(--ink);margin:5px;border-radius:3px}

.full-bleed{
    width:100vw;
    margin-left:calc(50% - 50vw);
    margin-right:calc(50% - 50vw);
}
.hero{
    background:
      radial-gradient(circle at 70% 20%,rgba(5,118,216,.13),transparent 34%),
      radial-gradient(circle at 88% 72%,rgba(255,118,0,.13),transparent 31%),
      linear-gradient(180deg,#fff 0%,#f8fbfe 100%);
    border-bottom:1px solid var(--line);
}
.hero-inner{
    max-width:var(--max);
    margin:auto;
    padding:76px 20px 70px;
    display:grid;
    grid-template-columns:1.05fr .95fr;
    gap:60px;
    align-items:center;
}
.eyebrow{
    margin:0 0 10px;
    color:var(--blue);
    font-weight:800;
    text-transform:uppercase;
    letter-spacing:1px;
    font-size:13px;
}
.hero h1,.page-hero h1{
    margin:0 0 20px;
    font-size:clamp(38px,5vw,64px);
    line-height:1.04;
    letter-spacing:-1.7px;
}
.hero h1:after{
    content:"";
    display:block;
    width:92px;
    height:6px;
    margin-top:22px;
    border-radius:10px;
    background:linear-gradient(90deg,var(--blue) 50%,var(--orange) 50%);
}
.hero-lead{font-size:19px;color:var(--muted);max-width:700px}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin:30px 0}
.btn{
    display:inline-flex;
    align-items:center;
    justify-content:center;
    min-height:50px;
    padding:13px 22px;
    border-radius:13px;
    text-decoration:none;
    font-weight:800;
    border:2px solid transparent;
    cursor:pointer;
    font-size:16px;
}
.btn-primary{background:var(--orange);color:#fff}
.btn-primary:hover{background:var(--orange-dark)}
.btn-secondary{background:#fff;border-color:var(--blue);color:var(--blue)}
.btn-light{background:#fff;color:var(--blue-dark)}
.btn-block{width:100%}
.trust-row{display:flex;gap:16px;flex-wrap:wrap;color:#41505e;font-size:14px;font-weight:700}

.clima-visual{
    min-height:420px;
    position:relative;
    border-radius:32px;
    background:linear-gradient(135deg,#edf8ff,#fff8ef);
    border:1px solid #dceaf3;
    box-shadow:var(--shadow);
    overflow:hidden;
}
.ac-unit{
    position:absolute;
    left:10%;
    top:31%;
    width:80%;
    height:135px;
    border-radius:24px 24px 17px 17px;
    background:linear-gradient(180deg,#fff,#e9eff4);
    box-shadow:0 25px 35px rgba(0,0,0,.16);
    border:1px solid #d2dce4;
}
.ac-logo{position:absolute;left:22px;top:24px;color:#74808a;font-size:13px;font-weight:700}
.temperature{position:absolute;right:22px;top:24px;color:#8896a1;font-size:26px}
.ac-vent{position:absolute;left:6%;right:6%;bottom:12px;height:16px;border-radius:2px 2px 12px 12px;background:#8996a0;box-shadow:inset 0 5px 5px rgba(0,0,0,.25)}
.air-flow{position:absolute;top:55%;left:24%;right:12%;height:160px;display:flex;gap:8px;transform:skewX(-12deg)}
.air-flow span{width:50%;border-radius:0 0 40px 40px;filter:blur(1px);opacity:.55}
.cold-flow{background:linear-gradient(180deg,rgba(5,118,216,.75),rgba(5,118,216,0))}
.warm-flow{background:linear-gradient(180deg,rgba(255,118,0,.75),rgba(255,118,0,0))}
.season{position:absolute;display:flex;align-items:center;gap:8px;font-weight:900}
.season small{font-weight:700;text-transform:uppercase;color:var(--muted);font-size:11px}
.season-icon{font-size:30px}
.season-cold{left:25px;bottom:25px;color:var(--blue)}
.season-warm{right:25px;top:25px;color:var(--orange)}

.quick-benefits{
    max-width:var(--max);
    margin:45px auto 0;
    padding:0 20px;
    display:grid;
    grid-template-columns:repeat(3,1fr);
    gap:20px;
}
.quick-benefits article{
    border:1px solid var(--line);
    border-radius:18px;
    padding:24px;
    background:#fff;
    box-shadow:0 8px 24px rgba(12,50,85,.05);
}
.quick-benefits span{font-size:28px}
.quick-benefits h2{font-size:20px;margin:12px 0 7px}
.quick-benefits p{margin:0;color:var(--muted)}

.section{max-width:var(--max);margin:auto;padding:85px 20px}
.section-heading{max-width:760px;margin:0 auto 40px;text-align:center}
.section-heading h2,.split-copy h2,.footer-cta h2,.final-cta h2,.about-grid h2,.contact-layout h2{
    margin:0 0 15px;
    font-size:clamp(30px,4vw,46px);
    line-height:1.12;
}
.section-heading p:last-child{color:var(--muted)}
.service-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}
.service-card{
    padding:28px;
    border:1px solid var(--line);
    border-radius:var(--radius);
    background:#fff;
    transition:.2s ease;
}
.service-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.service-icon{
    width:52px;height:52px;display:grid;place-items:center;
    background:var(--blue-soft);border-radius:15px;font-size:25px
}
.service-card:nth-child(even) .service-icon{background:#fff3e8}
.service-card h3{font-size:21px;line-height:1.25;margin:18px 0 10px}
.service-card p{color:var(--muted);margin:0 0 18px}
.service-card a{color:var(--blue);font-weight:800;text-decoration:none}

.split-section{
    max-width:var(--max);
    margin:0 auto 30px;
    padding:20px;
    display:grid;
    grid-template-columns:1.15fr .85fr;
    gap:28px;
    align-items:stretch;
}
.split-copy{padding:45px}
.split-copy p{color:var(--muted)}
.check-list{list-style:none;padding:0;margin:25px 0}
.check-list li{padding:7px 0 7px 30px;position:relative}
.check-list li:before{content:"✓";position:absolute;left:0;color:var(--blue);font-weight:900}
.info-panel{
    border-radius:28px;
    padding:45px;
    display:flex;
    flex-direction:column;
    justify-content:center;
    background:linear-gradient(135deg,var(--blue-dark),#062945);
    color:#fff;
}
.info-panel .big-icon{font-size:54px}
.info-panel h3{font-size:34px;line-height:1.15;margin:15px 0}
.info-panel p{color:#d9e9f7}
.info-panel a{font-size:30px;color:#fff;font-weight:900;text-decoration:none}

.faq-section{padding-top:60px}
.faq-list{max-width:900px;margin:auto}
.faq-list details{border:1px solid var(--line);border-radius:14px;padding:18px 20px;margin:12px 0;background:#fff}
.faq-list summary{font-weight:800;cursor:pointer}
.faq-list p{color:var(--muted);margin-bottom:0}

.final-cta{
    background:linear-gradient(120deg,var(--blue),var(--blue-dark));
    color:#fff;
    padding:48px max(20px,calc((100vw - var(--max))/2 + 20px));
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:30px;
}
.final-cta .eyebrow{color:#cceaff}
.final-cta h2{margin-bottom:8px}
.final-cta p{margin:0;max-width:760px;color:#e8f3fb}

.page-hero{
    background:linear-gradient(120deg,#f0f8ff,#fff8f0);
    padding:75px max(20px,calc((100vw - var(--max))/2 + 20px));
}
.page-hero>div{max-width:860px}
.page-hero h1{font-size:clamp(38px,5vw,58px)}
.page-hero p:last-child{font-size:19px;color:var(--muted)}
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:45px;align-items:start}
.about-grid>div>p{color:var(--muted)}
.values-box{border:1px solid var(--line);border-radius:var(--radius);padding:32px;background:#fbfdff}
.value{display:flex;gap:14px;margin:23px 0}
.value>span{width:34px;height:34px;display:grid;place-items:center;border-radius:50%;background:var(--blue);color:#fff;font-weight:900;flex:0 0 auto}
.value strong{font-size:18px}
.value p{margin:5px 0 0;color:var(--muted)}
.mini-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}
.mini-grid article{padding:24px;border:1px solid var(--line);border-radius:17px}
.mini-grid strong{font-size:18px}
.mini-grid p{margin-bottom:0;color:var(--muted)}

.contact-layout{display:grid;grid-template-columns:.8fr 1.2fr;gap:35px;align-items:start}
.contact-card,.contact-form-wrap{
    border:1px solid var(--line);
    border-radius:var(--radius);
    padding:34px;
    background:#fff;
    box-shadow:0 10px 30px rgba(12,50,85,.06);
}
.contact-card h2 a{text-decoration:none;color:var(--blue)}
.contact-services{margin-top:30px;padding-top:24px;border-top:1px solid var(--line)}
.contact-form{display:grid;gap:17px;margin-top:25px}
.contact-form label{font-weight:700}
.contact-form input,.contact-form select,.contact-form textarea,.request-result textarea{
    width:100%;
    margin-top:7px;
    border:1px solid #cfd7df;
    border-radius:10px;
    padding:13px 14px;
    font:inherit;
    background:#fff;
}
.contact-form input:focus,.contact-form select:focus,.contact-form textarea:focus{outline:2px solid rgba(5,118,216,.18);border-color:var(--blue)}
.request-result{margin-top:22px;padding:20px;border-radius:15px;background:#f4f9fd}
.request-result .btn{margin:10px 8px 0 0}

.site-footer{background:#f7fafc;border-top:1px solid var(--line)}
.footer-cta{
    max-width:var(--max);
    margin:auto;
    padding:50px 20px;
    display:flex;
    align-items:center;
    justify-content:space-between;
    gap:30px;
}
.footer-cta h2{font-size:34px}
.footer-cta p{margin:5px 0;color:var(--muted)}
.footer-cta .btn-light{background:var(--orange);color:#fff}
.footer-grid{
    max-width:var(--max);
    margin:auto;
    padding:44px 20px;
    display:grid;
    grid-template-columns:1.3fr 1fr 1fr 1fr;
    gap:35px;
    border-top:1px solid var(--line);
}
.footer-grid h3{font-size:16px;margin-top:0}
.footer-grid a{display:block;text-decoration:none;color:#44515d;margin:8px 0}
.footer-grid p{color:var(--muted)}
.footer-brand{font-size:28px;font-weight:900}.footer-brand span{color:var(--blue)}
.footer-phone{font-size:24px!important;font-weight:900;color:var(--orange)!important}
.copyright{border-top:1px solid var(--line);padding:20px;text-align:center;color:var(--muted);font-size:13px}
.floating-call{
    position:fixed;right:22px;bottom:22px;z-index:999;
    width:58px;height:58px;border-radius:50%;
    display:grid;place-items:center;background:var(--orange);color:#fff;
    text-decoration:none;font-size:26px;box-shadow:0 12px 25px rgba(0,0,0,.22)
}

@media(max-width:900px){
    .menu-toggle{display:block}
    .main-nav{
        display:none;
        position:absolute;
        left:15px;right:15px;top:77px;
        padding:18px;
        border-radius:14px;
        background:#fff;
        box-shadow:var(--shadow);
        border:1px solid var(--line);
        flex-direction:column;
        align-items:stretch;
    }
    .main-nav.is-open{display:flex}
    .main-nav a{padding:8px 4px}
    .hero-inner{grid-template-columns:1fr;padding-top:54px}
    .clima-visual{min-height:380px}
    .quick-benefits,.service-grid{grid-template-columns:1fr 1fr}
    .split-section,.about-grid,.contact-layout{grid-template-columns:1fr}
    .mini-grid{grid-template-columns:1fr 1fr}
    .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:620px){
    .header-inner{min-height:72px;padding:8px 14px}
    .brand{min-width:0}
    .brand-mark{width:50px;height:46px}
    .brand-mark:before,.brand-mark:after{width:30px;height:30px}
    .brand-text strong{font-size:20px}
    .brand-text small{font-size:8px}
    .hero-inner{padding:45px 16px 55px;gap:35px}
    .hero h1,.page-hero h1{font-size:39px}
    .hero-lead{font-size:17px}
    .hero-actions .btn{width:100%}
    .trust-row{flex-direction:column;gap:6px}
    .clima-visual{min-height:335px}
    .ac-unit{height:110px;top:32%}
    .season{font-size:12px}.season small{display:none}
    .quick-benefits,.service-grid,.mini-grid,.footer-grid{grid-template-columns:1fr}
    .quick-benefits{margin-top:28px}
    .section{padding:60px 16px}
    .split-section{padding:16px}
    .split-copy,.info-panel{padding:28px}
    .final-cta,.footer-cta{flex-direction:column;align-items:flex-start}
    .final-cta{padding:42px 16px}
    .page-hero{padding:58px 16px}
    .contact-card,.contact-form-wrap{padding:24px}
    .footer-grid,.footer-cta{padding-left:16px;padding-right:16px}
}