/* ============================================
   FROSTTECH — static v2 (brand purple #471377)
   ============================================ */
:root{
  --purple:#471377;
  --purple-dark:#320d54;
  --purple-soft:#6b2fa8;
  --lavender:#f5f0fb;
  --ice:#eef4fc;
  --ink:#33323a;
  --ink-soft:#615f6e;
  --white:#fff;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:'Poppins','Segoe UI',Tahoma,sans-serif;color:var(--ink);background:#fff;line-height:1.6}
img{max-width:100%;height:auto}
a{text-decoration:none;color:inherit}
.container{max-width:1140px;margin:0 auto;padding:0 20px}

/* ---------- Header ---------- */
.site-header{position:sticky;top:0;z-index:100;background:var(--white);box-shadow:0 2px 12px rgba(50,13,84,.10)}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:10px 20px;max-width:1140px;margin:0 auto}
.logo img{height:62px;width:auto;display:block}
.main-nav ul{display:flex;gap:34px;list-style:none}
.main-nav a{font-weight:600;font-size:.95rem;color:var(--purple-dark);padding:8px 0;border-bottom:2px solid transparent;transition:.2s}
.main-nav a:hover,.main-nav a.active{color:var(--purple);border-bottom-color:var(--purple)}
.nav-toggle{display:none;background:none;border:none;font-size:1.7rem;color:var(--purple);cursor:pointer}

/* ---------- Hero ---------- */
.hero{position:relative;color:var(--white);text-align:center;padding:130px 20px 140px;background:url('/images/litis_aircondition.jpg') center/cover no-repeat;overflow:hidden}
.hero::before{content:"";position:absolute;inset:0;background:linear-gradient(120deg,rgba(50,13,84,.92) 0%,rgba(71,19,119,.85) 55%,rgba(107,47,168,.72) 100%)}
.hero > *{position:relative}
.hero h1{font-size:2.3rem;font-weight:700;max-width:840px;margin:0 auto 26px;line-height:1.3}
.hero-phones{display:flex;gap:18px;justify-content:center;flex-wrap:wrap;margin-bottom:30px}
.hero-phones a{font-size:1.5rem;font-weight:700;color:#fff;display:inline-flex;align-items:center;gap:8px}
.hero-phones a:hover{color:#dcc7f5}
.btn{display:inline-block;background:var(--white);color:var(--purple);font-weight:700;padding:14px 34px;border-radius:40px;transition:.25s;box-shadow:0 6px 18px rgba(0,0,0,.22)}
.btn:hover{transform:translateY(-2px);background:var(--lavender)}
.btn-purple{background:var(--purple);color:#fff}
.btn-purple:hover{background:var(--purple-dark);color:#fff}

/* ---------- Intro ---------- */
.intro{padding:80px 0 60px;text-align:center}
.intro h2{font-size:1.7rem;color:var(--purple-dark);margin-bottom:8px}
.intro h3{font-size:1.3rem;color:var(--purple);margin-bottom:18px;font-weight:600}
.intro .quote{font-size:1.1rem;font-style:italic;color:var(--ink-soft);margin-bottom:24px}
.intro p{max-width:760px;margin:0 auto 14px;color:var(--ink-soft)}
.intro .checks{margin-top:24px;font-weight:600;color:var(--purple-dark);line-height:2}

/* ---------- Features ---------- */
.features{background:var(--lavender);padding:70px 0}
.features h2{text-align:center;font-size:1.7rem;color:var(--purple-dark);margin-bottom:46px}
.features-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:28px}
.feature{background:#fff;border-radius:14px;padding:32px 22px;text-align:center;box-shadow:0 4px 16px rgba(50,13,84,.08);transition:.25s}
.feature:hover{transform:translateY(-6px);box-shadow:0 12px 28px rgba(50,13,84,.14)}
.feature .fi{width:64px;height:64px;margin:0 auto 18px;border-radius:50%;background:var(--lavender);display:flex;align-items:center;justify-content:center}
.feature .fi svg{width:32px;height:32px;stroke:var(--purple)}
.feature h4{color:var(--purple);margin-bottom:10px;font-size:1.02rem}
.feature p{font-size:.9rem;color:var(--ink-soft)}

/* ---------- Services (με φωτογραφίες) ---------- */
.services{padding:80px 0}
.services .eyebrow{text-align:center;letter-spacing:.12em;font-size:.8rem;font-weight:700;color:var(--purple);text-transform:uppercase;margin-bottom:8px}
.services h2{text-align:center;font-size:1.7rem;color:var(--purple-dark);margin-bottom:12px}
.services .sub{text-align:center;color:var(--ink-soft);max-width:640px;margin:0 auto 46px}
.services-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:26px}
.service{border-radius:14px;overflow:hidden;background:#fff;box-shadow:0 4px 16px rgba(50,13,84,.08);transition:.25s;display:flex;flex-direction:column}
.service:hover{transform:translateY(-6px);box-shadow:0 14px 30px rgba(50,13,84,.15)}
.service .thumb{height:160px;overflow:hidden}
.service .thumb img{width:100%;height:100%;object-fit:cover;transition:.35s}
.service:hover .thumb img{transform:scale(1.06)}
.service .body{padding:20px 20px 24px;border-top:4px solid var(--purple)}
.service h5{color:var(--purple-dark);font-size:1.02rem;margin-bottom:10px}
.service p{font-size:.9rem;color:var(--ink-soft)}

/* ---------- Brands ---------- */
.brands{background:var(--ice);padding:56px 0}
.brands h2{text-align:center;font-size:1.4rem;color:var(--purple-dark);margin-bottom:8px}
.brands .sub{text-align:center;color:var(--ink-soft);margin-bottom:34px;font-size:.95rem}
.brands-grid{display:grid;grid-template-columns:repeat(7,1fr);gap:22px;align-items:center}
.brands-grid .brand{background:#fff;border-radius:10px;padding:16px 14px;display:flex;align-items:center;justify-content:center;box-shadow:0 3px 10px rgba(50,13,84,.06);transition:.25s}
.brands-grid .brand:hover{transform:translateY(-4px);box-shadow:0 8px 18px rgba(50,13,84,.12)}
.brands-grid img{max-height:34px;width:auto;filter:grayscale(1);opacity:.75;transition:.25s}
.brands-grid .brand:hover img{filter:none;opacity:1}

/* ---------- Expertise ---------- */
.expertise{background:var(--purple-dark);color:#fff;padding:80px 0}
.expertise-wrap{display:grid;grid-template-columns:1.15fr .85fr;gap:50px;align-items:center}
.expertise h2{font-size:1.7rem;margin-bottom:16px}
.expertise .lead{color:#d6c4ee;margin-bottom:28px}
.expertise-grid{display:grid;grid-template-columns:1fr;gap:9px;margin-bottom:36px}
.expertise-grid div{position:relative;padding-left:28px;font-size:.93rem;color:#ece2f8}
.expertise-grid div::before{content:"❄";position:absolute;left:0;color:#b592e0;font-size:.9rem}
.expertise .photo img{border-radius:16px;box-shadow:0 16px 40px rgba(0,0,0,.35);width:100%;object-fit:cover}

/* ---------- Counters ---------- */
.counters{background:linear-gradient(120deg,var(--purple),var(--purple-soft));color:#fff;padding:64px 0}
.counters-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:26px;text-align:center}
.counter .num{font-size:2.6rem;font-weight:700}
.counter .label{font-size:.92rem;color:#e6d8f7}

/* ---------- CTA ---------- */
.cta{padding:80px 0;text-align:center}
.cta h2{font-size:1.6rem;color:var(--purple-dark);margin-bottom:10px}
.cta p{color:var(--ink-soft);margin-bottom:14px}
.cta .phones{display:flex;gap:24px;justify-content:center;flex-wrap:wrap;margin:18px 0 26px}
.cta .phones a{font-size:1.5rem;font-weight:700;color:var(--purple)}
.cta .phones a:hover{color:var(--purple-soft)}

/* ---------- Contact page ---------- */
.page-title{background:linear-gradient(135deg,var(--purple-dark),var(--purple));color:#fff;text-align:center;padding:64px 20px}
.page-title h1{font-size:1.9rem}
.contact-top{padding:70px 0;display:grid;grid-template-columns:1.2fr .8fr;gap:50px;align-items:start}
.contact-top h2{color:var(--purple-dark);font-size:1.4rem;margin-bottom:14px}
.contact-top p{color:var(--ink-soft);margin-bottom:22px}
.contact-card{background:var(--lavender);border-radius:16px;padding:34px 30px;text-align:center}
.contact-card img.clogo{max-height:120px;margin-bottom:14px;border-radius:10px}
.contact-card h3{color:var(--purple-dark);margin-bottom:14px}
.contact-card a.phone{display:block;font-size:1.6rem;font-weight:700;color:var(--purple);margin:8px 0}
.contact-card a.phone:hover{color:var(--purple-soft)}
.contact-card .hours{margin-top:16px;font-weight:600;color:var(--purple-dark)}
.contact-card .fb{display:inline-block;margin-top:18px;font-weight:600;color:var(--purple)}

/* FAQ */
.faq-item{border:1px solid #e6ddf3;border-radius:10px;margin-bottom:12px;overflow:hidden;background:#fff}
.faq-item summary{cursor:pointer;padding:16px 20px;font-weight:600;color:var(--purple-dark);list-style:none;position:relative;padding-right:44px}
.faq-item summary::after{content:"+";position:absolute;right:20px;top:50%;transform:translateY(-50%);font-size:1.3rem;color:var(--purple)}
.faq-item[open] summary::after{content:"−"}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item p{padding:0 20px 16px;color:var(--ink-soft);font-size:.95rem}

/* Map */
.map-section{padding:0 0 80px;text-align:center}
.map-section h2{color:var(--purple-dark);font-size:1.45rem;margin-bottom:22px}
.map-section iframe{width:100%;height:420px;border:0;border-radius:16px;box-shadow:0 8px 24px rgba(50,13,84,.16)}
.map-section .addr{margin-top:14px;color:var(--ink-soft)}

/* ---------- Footer ---------- */
.site-footer{background:var(--purple-dark);color:#c9b6e2;padding:36px 0;text-align:center}
.site-footer .logo-footer img{height:56px;margin-bottom:14px;background:#fff;border-radius:10px;padding:6px}
.site-footer nav{margin-bottom:12px}
.site-footer nav a{margin:0 14px;color:#ece2f8;font-size:.92rem}
.site-footer nav a:hover{color:#fff}
.site-footer .copy{font-size:.85rem}

/* ---------- Responsive ---------- */
@media(max-width:920px){
  .features-grid,.services-grid{grid-template-columns:repeat(2,1fr)}
  .counters-grid{grid-template-columns:repeat(2,1fr)}
  .brands-grid{grid-template-columns:repeat(4,1fr)}
  .contact-top,.expertise-wrap{grid-template-columns:1fr}
  .expertise .photo{order:-1}
}
@media(max-width:640px){
  .nav-toggle{display:block}
  .main-nav{display:none;position:absolute;top:100%;left:0;right:0;background:#fff;box-shadow:0 10px 20px rgba(0,0,0,.1)}
  .main-nav.open{display:block}
  .main-nav ul{flex-direction:column;gap:0;padding:10px 20px}
  .main-nav a{display:block;padding:12px 0}
  .hero{padding:90px 20px 100px}
  .hero h1{font-size:1.55rem}
  .features-grid,.services-grid{grid-template-columns:1fr}
  .brands-grid{grid-template-columns:repeat(2,1fr)}
}
@media (prefers-reduced-motion: reduce){
  *{transition:none!important;animation:none!important}
  html{scroll-behavior:auto}
}