/* VOLTISYS Rechnungsportal – schlicht, mobil zuerst, ohne Skripte */
:root{--text:#1d2329;--grau:#5b6670;--linie:#d7dde2;--flaeche:#f4f6f8;--blau:#0b4f8a;--rot:#b42318;--rotflaeche:#fdecea;--gruen:#1e7b34;--gruenflaeche:#e8f5ec;--gelb:#fff6d6}
*{box-sizing:border-box}
body{margin:0;font:16px/1.45 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;color:var(--text);background:#fff}
a{color:var(--blau)}
header{background:var(--blau);color:#fff;padding:.6rem 1rem;display:flex;flex-wrap:wrap;gap:.4rem 1rem;align-items:center}
header a{color:#fff;text-decoration:none;font-weight:600}
header .marke{font-weight:800;letter-spacing:.04em;margin-right:auto}
header form{margin:0}
header button{background:transparent;color:#fff;border:1px solid #fff8;padding:.2rem .6rem}
main{max-width:1100px;margin:0 auto;padding:1rem}
h1{font-size:1.45rem;margin:.4rem 0 1rem}h2{font-size:1.15rem;margin:1.6rem 0 .6rem}
.hinweis{background:var(--gruenflaeche);border-left:4px solid var(--gruen);padding:.6rem .8rem;margin:0 0 1rem}
.fehler,.rot{background:var(--rotflaeche);border-left:4px solid var(--rot);padding:.6rem .8rem;margin:0 0 1rem}
.test{background:var(--gelb);border-left:4px solid #c99a00;padding:.6rem .8rem;margin:0 0 1rem;font-size:.92rem}
.test ul,.rot ul,.fehler ul{margin:.3rem 0 0 1.1rem;padding:0}
table{border-collapse:collapse;width:100%;margin:.4rem 0 1rem;font-size:.95rem}
th,td{border-bottom:1px solid var(--linie);padding:.45rem .4rem;text-align:left;vertical-align:top}
th{background:var(--flaeche);font-weight:600}
td.z,th.z{text-align:right;white-space:nowrap}
.tabelle{overflow-x:auto}
.kacheln{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:.8rem;margin-bottom:1rem}
.kachel{background:var(--flaeche);padding:.8rem;border-radius:6px}.kachel b{display:block;font-size:1.4rem}
form.block{background:var(--flaeche);padding:1rem;border-radius:6px;margin:.6rem 0 1.2rem}
label{display:block;font-weight:600;margin:.6rem 0 .2rem}
input,select,textarea{font:inherit;width:100%;padding:.55rem;border:1px solid #9aa5ae;border-radius:4px;background:#fff}
input[type=checkbox]{width:auto;transform:scale(1.4);margin-right:.6rem}
.check{display:flex;align-items:flex-start;font-weight:600;background:#fff;padding:.7rem;border:2px solid var(--blau);border-radius:6px;margin:1rem 0}
.zeile{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:0 1rem}
button,.knopf{display:inline-block;font:inherit;font-weight:700;background:var(--blau);color:#fff;border:0;border-radius:6px;padding:.7rem 1.1rem;cursor:pointer;text-decoration:none}
button.gross{width:100%;padding:1rem;font-size:1.1rem}
button.leise,.knopf.leise{background:#fff;color:var(--blau);border:1px solid var(--blau)}
button.gefahr{background:var(--rot)}
.projekte a{display:block;padding:1rem;margin:.5rem 0;border:1px solid var(--linie);border-radius:8px;text-decoration:none;color:var(--text);background:var(--flaeche)}
.projekte a b{display:block;font-size:1.1rem;color:var(--blau)}
.menge{display:grid;grid-template-columns:1fr 8rem;gap:.6rem;align-items:center;border-bottom:1px solid var(--linie);padding:.5rem 0}
.menge input{text-align:right;font-size:1.2rem}
.klein{font-size:.85rem;color:var(--grau)}
.ok{color:var(--gruen);font-weight:700}.nok{color:var(--rot);font-weight:700}
details{margin:.3rem 0}summary{cursor:pointer;color:var(--blau)}
footer{color:var(--grau);font-size:.8rem;text-align:center;padding:2rem 1rem}
@media (max-width:640px){main{padding:.7rem}th,td{padding:.4rem .25rem}.versteckt-mobil{display:none}}