/* ============================================================
   isualc AI — Design-Tokens
   Schrift: Humanist-Systemstack (keine Webfonts → kein Font-CDN,
   passend zu "keine Cookies, kein Tracking")
   Theme: hell/dunkel folgt dem System, manuell übersteuerbar
   über data-theme auf <html> (theme.js, localStorage)
   ============================================================ */
:root{
  --font-sans:"Seravek","Gill Sans Nova",Ubuntu,Calibri,"DejaVu Sans",source-sans-pro,sans-serif;
  color-scheme:light;
  --accent:#1d4a5a;
  --accent2:#2e7d8c;
  --warm:#c2410c;
  --ink:#182226;
  --muted:#51646a;
  --bg:#f6f9f9;
  --card:#ffffff;
  --line:#dfe8e9;
  --tint:#e8f1f2;
  --btn-bg:#1d4a5a;
  --btn-ink:#ffffff;
  --shadow:0 1px 2px rgba(23,42,48,.05),0 10px 28px -14px rgba(23,42,48,.16);
  --radius:14px;
}
:root[data-theme=dark]{
  color-scheme:dark;
  --accent:#8ec9d6;
  --accent2:#a5d8e2;
  --warm:#f5a623;
  --ink:#e4ecee;
  --muted:#9fb3b8;
  --bg:#0f171a;
  --card:#152025;
  --line:#243237;
  --tint:#1b2c32;
  --btn-bg:#7cc3d2;
  --btn-ink:#0c1417;
  --shadow:0 1px 2px rgba(0,0,0,.35),0 10px 28px -14px rgba(0,0,0,.55);
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme=light]){
    color-scheme:dark;
    --accent:#8ec9d6;
    --accent2:#a5d8e2;
    --warm:#f5a623;
    --ink:#e4ecee;
    --muted:#9fb3b8;
    --bg:#0f171a;
    --card:#152025;
    --line:#243237;
    --tint:#1b2c32;
    --btn-bg:#7cc3d2;
    --btn-ink:#0c1417;
    --shadow:0 1px 2px rgba(0,0,0,.35),0 10px 28px -14px rgba(0,0,0,.55);
  }
}

/* ============ Basis ============ */
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--font-sans);
  color:var(--ink);
  background:
    radial-gradient(1100px 480px at 85% -8%,rgba(46,125,140,.10),transparent 60%),
    var(--bg);
  line-height:1.7;
  font-size:1.0625rem;
  -webkit-font-smoothing:antialiased;
}
::selection{background:var(--accent2);color:#fff}
img,svg{max-width:100%;height:auto}
.wrap{max-width:960px;margin:0 auto;padding:0 20px}
:focus-visible{outline:2px solid var(--accent2);outline-offset:3px;border-radius:4px}

/* Skip-Link (Barrierefreiheit) */
.skip{position:absolute;left:-9999px;top:0;z-index:100;background:var(--accent);color:#fff;padding:10px 18px;border-radius:0 0 10px 0;font-weight:700;text-decoration:none}
.skip:focus{left:0}

/* ============ Header ============ */
header{
  position:sticky;top:0;z-index:10;
  background:var(--card);
  background:color-mix(in srgb,var(--card) 88%,transparent);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
header .wrap{display:flex;align-items:center;justify-content:space-between;padding:12px 20px;flex-wrap:wrap;gap:8px}
.logo{display:inline-flex;align-items:center;color:var(--accent);text-decoration:none}
.logo svg{height:32px;width:auto;display:block}
.logo .logo-petrol{fill:var(--accent)}
.logo .logo-punkt{fill:var(--warm)}
nav{display:flex;flex-wrap:wrap;gap:4px;align-items:center}
nav a{color:var(--muted);text-decoration:none;font-size:.97rem;font-weight:600;padding:8px 10px;border-radius:8px;transition:color .18s ease,background .18s ease}
nav a:hover{color:var(--accent);background:var(--tint)}
nav a[aria-current=page]{color:var(--accent);background:var(--tint)}
.theme-toggle{background:transparent;border:1.5px solid var(--line);border-radius:8px;color:var(--muted);font:inherit;font-size:.95rem;line-height:1;padding:8px 10px;cursor:pointer;margin-left:6px;transition:color .18s ease,border-color .18s ease}
.theme-toggle:hover{color:var(--accent);border-color:var(--accent2)}

/* ============ Typografie ============ */
.hero{padding:clamp(44px,7vw,72px) 0 36px}
.hero h1{font-size:clamp(2rem,5vw,2.7rem);color:var(--accent);line-height:1.15;letter-spacing:-.01em;margin-bottom:16px;max-width:22ch}
.hero p{max-width:62ch;color:var(--muted);font-size:clamp(1.05rem,1.4vw,1.15rem)}
.hero .btn{margin-right:8px}
.hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:40px;align-items:center}
.hero-art{width:100%;height:auto;color:var(--accent2)}
@media (max-width:760px){.hero-grid{grid-template-columns:1fr}.hero-art-wrap{display:none}}
.kicker{font-size:.82rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--accent2);margin-bottom:14px}
h2{color:var(--accent);margin:48px 0 14px;font-size:clamp(1.35rem,2.6vw,1.6rem);line-height:1.3;scroll-margin-top:84px}
h3{color:var(--accent);margin:24px 0 8px;font-size:1.13rem;scroll-margin-top:84px}
p{margin-bottom:14px}
.lead{color:var(--muted);max-width:62ch}
ul{margin:0 0 14px 22px}
li{margin-bottom:6px}

/* ============ USP-Leiste ============ */
.usp{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:14px;margin:26px 0 8px;padding:0;list-style:none}
.usp li{display:flex;gap:12px;align-items:flex-start;background:var(--card);border:1px solid var(--line);border-radius:10px;padding:14px 16px;font-size:.93rem;color:var(--muted);margin:0}
.usp svg{flex:none;width:24px;height:24px;color:var(--accent2);margin-top:2px}
.usp strong{color:var(--ink)}

/* ============ Cards ============ */
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:18px;margin:26px 0}
.card{
  position:relative;display:flex;flex-direction:column;
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:22px;box-shadow:var(--shadow);
  transition:transform .2s ease,border-color .2s ease;
}
.card:hover{transform:translateY(-3px);border-color:var(--accent2)}
.card:focus-within{border-color:var(--accent2)}
.card .icon{width:42px;height:42px;color:var(--accent2);margin-bottom:12px}
.card h3{margin-top:0}
.card p{color:var(--muted);font-size:.96rem;margin-bottom:12px}
.card>a{color:var(--accent2);text-decoration:none;font-weight:700;font-size:.95rem;margin-top:auto}
.card>a:hover{text-decoration:underline}
/* ganze Karte klickbar, Fokus bleibt am Link */
.card>a::after{content:"";position:absolute;inset:0;border-radius:var(--radius)}
.card>a:focus-visible{outline:none}
.card:has(>a:focus-visible){outline:2px solid var(--accent2);outline-offset:3px}

/* ============ Badges ============ */
.badge{display:inline-block;background:var(--tint);color:var(--accent);border-radius:20px;padding:3px 13px;font-size:.8rem;font-weight:700;margin-bottom:12px}
.badge.warm{background:color-mix(in srgb,var(--warm) 12%,var(--card));color:var(--warm)}

/* ============ Status und Transparenz ============ */
.status{
  margin:22px 0 30px;padding:16px 18px;
  background:color-mix(in srgb,var(--warm) 8%,var(--card));
  border:1px solid color-mix(in srgb,var(--warm) 38%,var(--line));
  border-left:4px solid var(--warm);border-radius:10px;
  color:var(--muted);font-size:.95rem;
}
.status strong{color:var(--ink)}
.status p:last-child{margin-bottom:0}
.status a{color:var(--accent2);font-weight:700}
.status-list{margin:8px 0 0 22px}
.status-list li{margin-bottom:4px}
.meta{color:var(--muted);font-size:.92rem}
.label{font-size:.8rem;font-weight:800;letter-spacing:.08em;text-transform:uppercase;color:var(--accent2)}

/* ============ Buttons ============ */
.btn{
  display:inline-block;background:var(--btn-bg);color:var(--btn-ink);
  padding:12px 24px;border-radius:10px;text-decoration:none;font-weight:700;
  margin-top:8px;transition:filter .18s ease,transform .18s ease;
}
.btn:hover{filter:brightness(1.12);transform:translateY(-1px)}
.btn.ghost{background:transparent;color:var(--accent);border:1.5px solid var(--line)}
.btn.ghost:hover{border-color:var(--accent2);filter:none}

/* ============ Tabellen ============ */
table{width:100%;border-collapse:collapse;margin:16px 0;font-size:.95rem;background:var(--card);border-radius:10px;overflow:hidden}
th,td{border:1px solid var(--line);padding:11px 13px;text-align:left;vertical-align:top}
th{background:var(--tint);color:var(--accent)}
@media (max-width:640px){
  table{display:block;overflow-x:auto}
}

/* ============ Galerie (Beispielansichten, Bento-Stil) ============
   Desktop: 1 großes Leitbild + 2 darunter, alles sofort sichtbar.
   Mobil: wischbarer Streifen mit Scroll-Snap. Kein JavaScript nötig. */
.gallery{display:grid;grid-template-columns:repeat(2,1fr);gap:14px;margin:28px 0 6px}
.gallery figure{margin:0}
.gallery figure:first-child{grid-column:1/-1}
.gallery img{width:100%;height:auto;display:block;border:1px solid var(--line);border-radius:var(--radius);background:#f3f8f9}
.gallery figcaption{font-size:.85rem;color:var(--muted);padding:8px 2px 0}
.c-hint{font-size:.82rem;color:var(--muted);margin:10px 0 0}
@media (max-width:640px){
  .gallery{display:flex;gap:12px;overflow-x:auto;scroll-snap-type:x mandatory;-webkit-overflow-scrolling:touch;scrollbar-width:none;padding:4px}
  .gallery::-webkit-scrollbar{display:none}
  .gallery figure{flex:0 0 82%;scroll-snap-align:center}
}

/* ============ Zahlungsarten ============ */
.pay{display:flex;flex-wrap:wrap;gap:10px;list-style:none;margin:16px 0;padding:0}
.pay li{display:flex;align-items:center;gap:6px;border:1.5px solid var(--line);border-radius:10px;padding:9px 15px;font-weight:700;font-size:.92rem;color:var(--ink);background:var(--card);margin:0}
.pay li small{font-weight:600;color:var(--muted)}
.pay .pay-klarna{background:#ffb3c7;border-color:#ffb3c7;color:#17120f}
.pay .pay-klarna small{color:#403038}
.pay .pay-paypal{background:#ffffff;border-color:#c9d7dd;color:#003087}
.pay .pay-paypal small{color:#0070ba}

/* ============ Kontaktformular ============ */
.form{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow);margin:26px 0;max-width:640px}
.form-row{margin-bottom:16px}
.form label{display:block;font-weight:700;font-size:.95rem;margin-bottom:6px;color:var(--ink)}
.form label .optional{font-weight:600;color:var(--muted);font-size:.85rem}
.form input,.form select,.form textarea{
  width:100%;font:inherit;color:var(--ink);background:var(--bg);
  border:1.5px solid var(--line);border-radius:10px;padding:11px 14px;
  transition:border-color .18s ease;
}
.form input:focus,.form select:focus,.form textarea:focus{border-color:var(--accent2);outline:none}
.form textarea{min-height:150px;resize:vertical}
.form button{
  display:inline-block;background:var(--btn-bg);color:var(--btn-ink);
  padding:12px 24px;border-radius:10px;border:0;font:inherit;font-weight:700;
  cursor:pointer;transition:filter .18s ease,transform .18s ease;
}
.form button:hover{filter:brightness(1.12);transform:translateY(-1px)}
.form button:disabled{opacity:.6;cursor:wait;transform:none}
.form-status{margin-top:14px;font-weight:600;font-size:.97rem}
.form-status.ok{color:var(--accent2)}
.form-status.err{color:var(--warm)}
.form-hint{font-size:.85rem;color:var(--muted);margin-top:14px;margin-bottom:0}
.visually-hidden{position:absolute !important;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.mail-alt{display:flex;flex-wrap:wrap;align-items:center;gap:10px;margin:14px 0}
.mail-alt code{font-size:1.02rem;background:var(--tint);color:var(--accent);padding:8px 14px;border-radius:10px;user-select:all}
.mail-alt .btn.ghost{margin-top:0;padding:8px 16px;font-size:.92rem}

/* ============ Buchseite ============ */
.book-grid{display:grid;grid-template-columns:1fr 300px;gap:40px;align-items:start;margin:26px 0}
.book-cover{width:100%;height:auto;border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);display:block}
.book-facts{list-style:none;margin:18px 0;padding:0}
.book-facts li{display:flex;gap:10px;margin:0 0 8px;font-size:.95rem;color:var(--muted)}
.book-facts strong{color:var(--ink);min-width:120px;font-weight:700}
@media (max-width:760px){.book-grid{grid-template-columns:1fr}.book-grid>aside{order:-1;max-width:260px}}

/* ============ Sonstiges ============ */
.note{font-size:.9rem;color:var(--muted);border-left:3px solid var(--accent2);padding:2px 0 2px 14px;margin:18px 0}
main{padding-bottom:40px}

/* ============ Footer ============ */
footer{border-top:1px solid var(--line);margin-top:64px;padding:30px 0;color:var(--muted);font-size:.9rem;background:var(--card)}
footer a{color:var(--muted)}
footer a:hover{color:var(--accent)}
.foot-nav{margin-bottom:12px;font-weight:600}

/* ============ Bewegung reduzieren ============ */
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *{transition:none !important;animation:none !important}
  .card:hover,.btn:hover{transform:none}
}
