/* Kälteprofi — styles.css
   Modern, clean design with blue/iceblue palette.
   Author: ChatGPT (GPT-5 Thinking)
*/
:root{
  --brand:#0077b6;        /* primary blue */
  --brand-ice:#90e0ef;    /* ice blue */
  --text:#1f2937;         /* gray-800 */
  --muted:#6b7280;        /* gray-500 */
  --bg:#ffffff;
  --bg-soft:#f7f7f7;
  --border:#e5e7eb;
  --radius:16px;
  --shadow:0 8px 24px rgba(0,0,0,.08);
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family: system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,"Helvetica Neue",Arial,"Noto Sans","Apple Color Emoji","Segoe UI Emoji";
  color:var(--text);
  background:var(--bg);
  line-height:1.55;
}

.container{
  width:min(1120px, 92vw);
  margin-inline:auto;
}

a{color:var(--brand); text-decoration:none}
a:hover{text-decoration:underline}

.button{
  display:inline-block;
  padding:.9rem 1.25rem;
  border-radius:12px;
  font-weight:600;
  background:var(--brand);
  color:#fff;
  border:1px solid transparent;
  box-shadow: var(--shadow);
  transition: transform .08s ease, box-shadow .2s ease, background .2s ease;
}
.button:hover{ transform: translateY(-1px); text-decoration:none }
.button.secondary{
  background:#fff;
  color:var(--brand);
  border-color: var(--brand);
  box-shadow:none;
}
.tag{
  display:inline-flex; gap:.5rem; align-items:center;
  background:var(--brand-ice);
  color:#083247;
  padding:.3rem .6rem;
  border-radius:999px;
  font-size:.85rem;
  font-weight:600;
}

/* Header */
.header{
  position:sticky; top:0; z-index:50;
  background: rgba(255,255,255,.85);
  backdrop-filter: blur(10px);
  border-bottom:1px solid var(--border);
}
.header-inner{ display:flex; align-items:center; justify-content:space-between; padding:.8rem 0; }
.brand{ display:flex; align-items:center; gap:.7rem; font-weight:800; letter-spacing:.2px }
.brand svg{ width:28px; height:28px }
.nav{ display:flex; align-items:center; gap:1rem; }
.nav a{ color:var(--text); font-weight:600; padding:.6rem .8rem; border-radius:10px }
.nav a:hover{ background:var(--bg-soft) }

/* Hero */
.hero{
  background: linear-gradient(135deg, #eef7fb 0%, #e8f6fb 40%, #ffffff 100%);
  border-bottom:1px solid var(--border);
}
.hero-grid{
  display:grid; gap:2rem; align-items:center;
  grid-template-columns: 1.2fr 1fr;
  padding: clamp(2rem, 4vw, 3rem) 0;
}
h1{ font-size: clamp(2rem, 3.2vw, 3rem); margin:0 0 1rem }
.lead{ color:var(--muted); font-size: clamp(1rem, 1.3vw, 1.15rem) }
.hero-cta{ display:flex; gap:1rem; flex-wrap:wrap; margin-top:1.25rem }

.hero-card{
  background:#fff; border:1px solid var(--border); border-radius: var(--radius);
  padding:1rem; box-shadow: var(--shadow);
}
.hero-img{
  display:block; width:100%; aspect-ratio: 16/10; object-fit:cover; border-radius:12px;
}

/* Services */
.section{ padding: clamp(2.25rem, 4vw, 3rem) 0 }
.section h2{ font-size: clamp(1.6rem, 2.4vw, 2rem); margin:0 0 1rem }
.grid{
  display:grid; gap:1rem;
  grid-template-columns: repeat(12, 1fr);
}
.card{
  grid-column: span 3;
  background:#fff; border:1px solid var(--border);
  border-radius: var(--radius);
  padding:1rem;
  box-shadow: var(--shadow);
  transition: transform .08s ease;
}
.card:hover{ transform: translateY(-2px) }
.card h3{ margin:.5rem 0 .4rem; font-size:1.1rem }
.card p{ margin:0; color:var(--muted) }
.card-icon{
  width:40px; height:40px; display:grid; place-items:center;
  background: #e6f4fb; border-radius:12px;
}

@media (max-width: 1024px){
  .card{ grid-column: span 6 }
  .hero-grid{ grid-template-columns: 1fr }
}
@media (max-width: 640px){
  .card{ grid-column: span 12 }
  .nav{ display:none }
  .header-inner{ justify-content:space-between }
}

/* About */
.about{
  display:grid; gap:2rem; grid-template-columns: 1fr 1.2fr;
}
.about img{ width:100%; border-radius:12px; border:1px solid var(--border) }
.about p{ color:var(--muted) }

/* Logos */
.logos{ display:grid; gap:1rem; grid-template-columns: repeat(6,1fr) }
.logo{
  background:#fff; border:1px solid var(--border); border-radius:12px; height:64px;
  display:grid; place-items:center; color:#9ca3af; font-weight:700;
}

/* Contact */
.form{
  display:grid; gap:1rem; grid-template-columns: 1fr 1fr;
}
.form .full{ grid-column: 1 / -1 }
input, textarea{
  width:100%; padding:.9rem 1rem; border-radius:10px;
  border:1px solid var(--border); background:#fff; font:inherit;
}
textarea{ min-height:140px; resize:vertical }
input:focus, textarea:focus{ outline:none; border-color: var(--brand); box-shadow: 0 0 0 3px rgba(0,119,182,.12) }

/* Footer */
.footer{
  margin-top:2rem; padding:2rem 0; border-top:1px solid var(--border); background:var(--bg-soft);
  color:var(--muted); font-size:.95rem;
}
.footer a{ color:inherit }