/* =========================================================
   Christian Ziegler – Static Website (HTML/CSS/JS)
   ========================================================= */

:root{
  color-scheme: light;
  --bg:#f6f7fb;
  --surface:#ffffff;
  --surface-2:#f0f3fa;
  --text:#0f172a;
  --muted:#475569;
  --brand:#6ee7ff;
  --brand-2:#a78bfa;
  --border: rgba(2,6,23,.12);
  --shadow: 0 12px 30px rgba(2,6,23,.10);
  --radius: 18px;
  --max: 1120px;
}

*{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";
  background: radial-gradient(900px 520px at 15% -10%, rgba(110,231,255,.18), transparent 60%),
              radial-gradient(900px 520px at 85% 0%, rgba(167,139,250,.18), transparent 55%),
              var(--bg);
  color:var(--text);
  line-height:1.55;
}

a{ color:inherit; text-decoration:none; }
a:hover{ text-decoration: underline; text-underline-offset: .2em; }
img{ max-width:100%; height:auto; display:block; }

.skip-link{
  position:absolute; left:-9999px; top:auto;
  width:1px; height:1px; overflow:hidden;
}
.skip-link:focus{
  left: 12px; top: 12px;
  width:auto; height:auto; padding:10px 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  z-index: 9999;
}

.container{
  width: min(var(--max), calc(100% - 40px));
  margin-inline: auto;
}

/* header.site-header{
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(10px);
  background: color-mix(in oklab, var(--bg) 76%, transparent);
  border-bottom: 1px solid var(--border);
} */
header.site-header{
  position: sticky;
  top: 0;
  z-index: 50;
  border-bottom: 1px solid var(--border);

  background-image: url("../img/wave.png");
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.navbar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding: 14px 0;
  gap: 16px;
}

/* .brand{
  display:flex;
  align-items:baseline;
  gap:10px;
  white-space: nowrap;
} */
.brand{
  display: flex;
  align-items: baseline;
  gap: 10px;
  white-space: normal;
  min-width: 0;
}
.brand .name{
  font-weight: 750;
  letter-spacing: .2px;
}
.brand .tag{
  font-size: .92rem;
  color: var(--muted);
}

.nav-links{
  display:flex;
  align-items:center;
  gap: 8px;
}

.nav-links a{
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid transparent;
  color: var(--muted);
}
.nav-links a[aria-current="page"]{
  color: var(--text);
  border-color: var(--border);
  background: color-mix(in oklab, var(--surface) 70%, transparent);
}
.nav-links a:hover{
  text-decoration:none;
  color: var(--text);
  border-color: var(--border);
}

.menu-btn{
  display:none;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  padding: 10px 12px;
  border-radius: 12px;
  cursor:pointer;
}

@media (max-width: 840px){
  .brand{
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    white-space: normal;
    line-height: 1.2;
    min-width: 0;
  }
  .brand .tag{
    font-size: .85rem;
  }
  .navbar{
    align-items: center;
  }
  .menu-btn{ display:inline-flex; align-items:center; gap:8px; }
  /* .nav-links{
    position: absolute;
    left: 0; right: 0;
    top: 64px;
    padding: 12px;
    display:none;
    flex-direction:column;
    align-items:stretch;
    border-bottom: 1px solid var(--border);
    background: color-mix(in oklab, var(--bg) 86%, transparent);
    backdrop-filter: blur(10px);
  } */
  .nav-links{
    position: absolute;
    left: 0; right: 0;
    top: 64px;
    padding: 12px;
    display:none;
    flex-direction:column;
    align-items:stretch;
    border-bottom: 1px solid var(--border);

    background-image: url("../img/wave.png");
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
  }
  .nav-links.open{ display:flex; }
  .nav-links a{ width:100%; }
}

.hero{ padding: 42px 0 24px; }
.hero-grid{
  display:grid;
  grid-template-columns: 1.25fr .85fr;
  gap: 26px;
  align-items: start;
}
@media (max-width: 900px){
  .hero-grid{ grid-template-columns: 1fr; }
}

.card{
  border: 1px solid var(--border);
  background: linear-gradient(180deg, color-mix(in oklab, var(--surface) 92%, transparent), var(--surface));
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.hero .card{ padding: 26px 22px; }

.kicker{
  display:inline-flex;
  align-items:center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: color-mix(in oklab, var(--surface-2) 70%, transparent);
  color: var(--muted);
  font-size: .95rem;
}
.kicker .dot{
  width: 8px; height: 8px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--brand), var(--brand-2));
}
h1{
  margin: 14px 0 10px;
  font-size: clamp(1.8rem, 4vw, 3rem);
  line-height:1.1;
  letter-spacing: -0.02em;
}
.lead{
  font-size: 1.05rem;
  color: var(--muted);
  margin: 0 0 16px;
}
.cta-row{
  display:flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap: 8px;
  padding: 12px 14px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: color-mix(in oklab, var(--surface) 92%, transparent);
  color: var(--text);
  text-decoration:none;
  font-weight: 650;
}
.btn.primary{
  border-color: color-mix(in oklab, var(--brand) 55%, var(--border));
  background: linear-gradient(135deg, color-mix(in oklab, var(--brand) 22%, transparent),
                                     color-mix(in oklab, var(--brand-2) 18%, transparent));
}
.btn:hover{ text-decoration:none; transform: translateY(-1px); }
.btn:active{ transform: translateY(0px); }

.side{ padding: 18px; }

.figure{
  border-radius: 16px;
  overflow:hidden;
  border: 1px solid var(--border);
  background: var(--surface-2);
}
.figure img{
  width:100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}
.figure figcaption{
  padding: 10px 12px;
  font-size: .9rem;
  color: var(--muted);
}

.section{ padding: 22px 0 42px; }
.section h2{
  margin: 0 0 10px;
  font-size: 1.5rem;
  letter-spacing: -.01em;
}
.section p{ color: var(--muted); margin: 0 0 10px; }

.grid-3{
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-top: 14px;
}
@media (max-width: 900px){ .grid-3{ grid-template-columns: 1fr; } }

.feature{ padding: 16px; }
.feature .title{ font-weight: 750; margin: 0 0 6px; }
.feature .desc{ margin:0; color: var(--muted); }

.split{
  display:grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}
@media (max-width: 900px){ .split{ grid-template-columns: 1fr; } }

.list{ margin: 10px 0 0; padding-left: 18px; color: var(--muted); }
.list li{ margin: 6px 0; }

.page-header{ padding: 34px 0 12px; }
.page-header h1{
  margin:0 0 8px;
  font-size: clamp(1.8rem, 3.6vw, 2.6rem);
}
.breadcrumbs{ color: var(--muted); font-size: .95rem; }
.breadcrumbs a{ color: var(--muted); }

.prose{ padding: 18px; }
.prose h2, .prose h3{ margin: 18px 0 10px; }
.prose h2{ font-size: 1.25rem; }
.prose h3{ font-size: 1.1rem; }
.prose p{ color: var(--muted); }
.prose a{ color: color-mix(in oklab, var(--brand) 70%, var(--text)); }
.prose hr{ border:0; border-top: 1px solid var(--border); margin: 18px 0; }

.contact-card{ padding: 18px; }
.kv{
  display:grid;
  grid-template-columns: 120px 1fr;
  gap: 8px 14px;
  color: var(--muted);
}
.kv .k{ color: var(--text); font-weight: 650; }
@media (max-width: 520px){ .kv{ grid-template-columns: 1fr; } }

.map-embed{
  border-radius: 16px;
  overflow:hidden;
  border: 1px solid var(--border);
  background: var(--surface-2);
}

.gallery{
  display:grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 10px;
  margin-top: 12px;
}
@media (max-width: 900px){ .gallery{ grid-template-columns: repeat(2, 1fr); } }
.gallery a{
  border-radius: 14px;
  overflow:hidden;
  border: 1px solid var(--border);
  background: var(--surface-2);
}
.gallery img{
  width:100%;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  transition: transform .25s ease;
}
.gallery a:hover img{ transform: scale(1.03); }

dialog.lightbox{
  width:min(980px, calc(100% - 24px));
  border:1px solid var(--border);
  border-radius: 18px;
  background: var(--surface);
  color: var(--text);
  padding: 10px;
  box-shadow: var(--shadow);
}
dialog::backdrop{ background: rgba(0,0,0,.6); }
.lightbox .top{
  display:flex;
  justify-content: space-between;
  align-items:center;
  padding: 6px 6px 10px;
}
.lightbox button{
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text);
  padding: 10px 12px;
  border-radius: 12px;
  cursor:pointer;
}
.lightbox figure{ margin:0; }
.lightbox img{
  width:100%;
  max-height: 70vh;
  object-fit: contain;
  border-radius: 14px;
  background: var(--surface-2);
  border: 1px solid var(--border);
}

footer{
  border-top: 1px solid var(--border);
  padding: 22px 0;
  color: var(--muted);
}
.footer-grid{
  display:flex;
  align-items:flex-start;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}
.footer-links{ display:flex; gap: 10px; flex-wrap: wrap; }
.badge{
  display:inline-flex;
  align-items:center;
  gap: 8px;
  padding: 8px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: color-mix(in oklab, var(--surface) 90%, transparent);
}