:root {
  --brand: #16a34a;
  --bg: #f6f7fb;
  --ink: #0b1220;
  --muted: #6b7280;
  --card: #ffffff;
  --ring: rgba(22,163,74,.3);
  --list-divider: #edf0f5;
  --flip-idle: color-mix(in oklab, var(--brand) 14%, #fff);
  --header-h: 56px;
}

* { box-sizing: border-box; }
html { color-scheme: light; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, Noto Sans, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
}

.container { width: min(1100px, 92%); margin-inline: auto; }

/* Header (white) + thin green band */
.site-header {
  position: relative;
  background: #fff;
  color: var(--ink);
  border-bottom: 1px solid #e6e8ee;
}
.header-inner { position: relative; display:flex; align-items:center; gap:.8rem; padding: .6rem 0; min-height: var(--header-h); }
.logo { flex: 0 0 auto; z-index: 41; }
.logo img { display:block; height: 36px; width: auto; max-width: 260px; }
.masthead { height:6px; background: var(--brand); }

/* Hamburger + overlay */
.nav-toggle { position: absolute; left: -9999px; }
.burger {
  margin-left: auto;
  width: 40px; height: 40px; display:grid; place-items:center;
  border-radius:.6rem; border:1px solid #e6e8ee; background:#fff; cursor:pointer;
  position: relative; z-index: 42;
}
.burger span, .burger span::before, .burger span::after {
  display:block; width:22px; height:2px; background: var(--ink);
  border-radius:2px; position: relative; transition: transform .3s, opacity .2s;
}
.burger span::before, .burger span::after { content:""; position:absolute; left:0; }
.burger span::before { top:-6px; }
.burger span::after  { top: 6px; }

.scrim { display:none; position: fixed; inset: 0; background: rgba(0,0,0,.08); z-index: 30; }

.nav-panel {
  display:none;
  position: fixed; right: 1rem; top: 1rem;
  background: rgba(255,255,255,.98);
  backdrop-filter: saturate(140%) blur(6px);
  border: 1px solid #e6e8ee; border-radius: .8rem;
  box-shadow: 0 12px 40px -12px rgba(0,0,0,.25);
  z-index: 41;
  width: max-content; max-width: min(92vw, 360px); max-height: min(70vh, 520px); overflow:auto;
}
.nav { list-style:none; padding:.4rem .6rem; margin:0; }
.nav.nav-list > li > a { display:block; padding:.7rem .3rem; text-decoration:none; color: var(--ink); border-top: 1px solid #e6e8ee; font-size: 1.05rem; }
.nav.nav-list > li:first-child > a { border-top: none; }
.nav.nav-list > li > a:hover, .nav.nav-list > li > a:focus { background: #fafbff; outline:none; }

.nav-toggle:checked ~ .nav-panel { display:block; }
.nav-toggle:checked ~ .scrim { display:block; }
.nav-toggle:checked + .burger span { transform: rotate(45deg); }
.nav-toggle:checked + .burger span::before { transform: rotate(90deg); top:0; }
.nav-toggle:checked + .burger span::after  { opacity:0; }

/* Hero */
.hero { background: linear-gradient(180deg, white, var(--bg)); border-bottom: 1px solid #e6e8ee; }
.hero-inner { padding: clamp(1.0rem, 4vw, 2.2rem) 0; }
.hero h1 { font-size: clamp(1.8rem, 5vw, 3rem); line-height:1.15; margin: 0; }

/* Section title */
.section-title {
  font-size: clamp(1.2rem, 2.4vw, 1.6rem);
  margin: 1rem 0 .4rem;
  text-align: center;
  font-weight: 800;
  letter-spacing: .2px;
  position: relative;
}
.section-title::after {
  content: "";
  display: block;
  width: 80px; height: 3px;
  margin: .4rem auto 0;
  background: var(--brand);
  border-radius: 999px;
}

/* Flip grid */
.features { display:grid; grid-template-columns: 1fr; gap: .9rem; padding: clamp(1.0rem, 4vw, 2.0rem) 0; }
@media (min-width: 640px) { .features { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 980px)  { .features { grid-template-columns: repeat(3, 1fr); } }

/* Flip behavior */
.flip-card { perspective: 1000px; outline: none; cursor: pointer; }
.flip-inner {
  position: relative; transform-style: preserve-3d;
  transition: transform .6s;
  min-height: 180px;
  border-radius: 1rem;
  border: 1px solid #e6e8ee;
  background: var(--flip-idle);
  box-shadow: 0 .5rem 1.4rem -1rem rgba(0,0,0,.08);
}
@media (hover:hover) and (pointer:fine) { .flip-card:hover .flip-inner { transform: rotateY(180deg); } }
.flip-card:focus .flip-inner, .flip-card:focus-within .flip-inner { transform: rotateY(180deg); }
.flip-face {
  position: absolute; inset: 0; backface-visibility: hidden;
  border-radius: 1rem; padding: 1rem 1.1rem;
  display:flex; flex-direction:column; justify-content:center;
}
.flip-front h2 { margin: 0 0 .4rem 0; font-size: 1.25rem; }
.flip-back { transform: rotateY(180deg); background: #fff; }

/* hint */
.hint {
  position:absolute; top:.55rem; right:.65rem; font-size:.72rem; color: #2b3a2f;
  background: rgba(255,255,255,.7); padding:.2rem .4rem; border-radius: .3rem; border:1px solid #dfe7e2;
}
@media (hover:hover) and (pointer:fine) { .hint { display:none; } }

.link { color: var(--ink); text-decoration: none; font-weight: 700; }
.link:hover { text-decoration: underline; }

/* Content blocks */
.stack { padding: clamp(1.4rem, 4.5vw, 3rem) 0; }
.service { border: 1px solid #e6e8ee; background:#fff; border-radius: 1rem; padding: 1rem 1.1rem; margin-bottom: 1rem; }

/* Kontakt */
.contact-grid { display:grid; grid-template-columns: 1fr; gap: 1rem; }
@media (min-width: 840px) { .contact-grid { grid-template-columns: 1fr 1fr; } }

form { display:grid; gap:.8rem; }
label { display:grid; gap:.35rem; font-weight:600; }
input, textarea { font: inherit; padding:.6rem .7rem; border-radius:.6rem; border:1px solid #d1d5db; background:#fff; }
input:focus, textarea:focus { outline: none; border-color: var(--brand); box-shadow: 0 0 0 4px var(--ring); }

/* Footer */
.site-footer { background: #0e1527; color: #dbe1ee; margin-top: 2rem; }
.site-footer a { color: #e3f6ed; text-decoration: none; }
.site-footer a:hover { text-decoration: underline; }
.footer-grid { display:grid; gap: 1.2rem; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); padding: 1.6rem 0; }
.footer-grid h3 { margin: 0 0 .4rem 0; }
.footer-bottom { border-top:1px solid rgba(255,255,255,.12); padding: .9rem 0; }

/* Google maps (two pins) */
.map-grid { display:grid; grid-template-columns: 1fr 1fr; gap:.6rem; }
.map-grid iframe { width:100%; height:200px; border:0; border-radius:.6rem; }
@media (max-width: 520px) { .map-grid { grid-template-columns: 1fr; } }


.flip-card { position: relative; }
.flip-check { position: absolute; left: -9999px; }
.flip-check:focus + .flip-inner { box-shadow: 0 0 0 4px var(--ring); }
/* When checkbox is checked, keep the back side visible */
.flip-check:checked + .flip-inner { transform: rotateY(180deg); }
/* Make the whole card toggle on click via label */
.flip-inner { cursor: pointer; }



/* Hidden checkbox stays in-flow for better iOS label toggling */
.flip-card { position: relative; }
.flip-check { position: absolute; opacity: 0; width: 0; height: 0; pointer-events: none; }
/* Keep transform when checked */
.flip-check:checked + .flip-inner { transform: rotateY(180deg); }
/* Desktop keyboard accessibility */
.flip-inner:focus-visible { box-shadow: 0 0 0 4px var(--ring); outline: none; }
/* Performance + Safari quirks */
.flip-inner { cursor: pointer; will-change: transform; -webkit-transform-style: preserve-3d; transform-style: preserve-3d; }
.flip-face { -webkit-backface-visibility: hidden; backface-visibility: hidden; }
/* On touch devices, make the whole card a toggle: prevent inner links from hijacking the tap */
@media (hover: none) and (pointer: coarse) {
  .flip-inner .link { pointer-events: none; }
}



/* === v18: Radio-group flip (mobile friendly) === */
.flip-card { position: relative; }
.flip-radio { position: absolute; opacity: 0; width: 0; height: 0; pointer-events: none; }
/* When the card's radio is selected, flip stays */
.flip-radio:checked + .flip-inner { transform: rotateY(180deg); }
/* 3D + Safari */
.flip-inner { will-change: transform; -webkit-transform-style: preserve-3d; transform-style: preserve-3d; transition: transform .6s; cursor: pointer; }
.flip-face { -webkit-backface-visibility: hidden; backface-visibility: hidden; }
/* Hover still works on desktop */
@media (hover:hover) and (pointer:fine) {
  .flip-card:hover .flip-inner { transform: rotateY(180deg); }
}
/* Front/back as labels (tap anywhere) */
.flip-front, .flip-back { display:flex; flex-direction:column; justify-content:center; }
/* Accessibility focus */
.flip-front:focus-visible, .flip-back:focus-visible { outline: none; box-shadow: 0 0 0 4px var(--ring); }