:root{--bg:#f5f8f7;--surface:#fff;--ink:#23332f;--muted:#687873;--primary:#4d8f7d;--primary2:#316c60;--soft:#e8f3ef;--line:#dce7e3;--danger:#b64646;--warn:#9b7119;--shadow:0 12px 35px rgba(38,75,65,.09);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}*{box-sizing:border-box}body{margin:0;background:linear-gradient(180deg,#f1f8f5 0,#f8faf9 420px);color:var(--ink);line-height:1.55}a{color:var(--primary2);text-decoration:none}a:hover{text-decoration:underline}.shell{width:min(1180px,calc(100% - 32px));margin:auto}.narrow{max-width:720px}header{background:rgba(255,255,255,.9);backdrop-filter:blur(12px);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:20}.top{display:flex;align-items:center;justify-content:space-between;min-height:72px}.brand{display:flex;gap:11px;align-items:center;font-weight:800;color:var(--ink)}.logo{display:grid;place-items:center;width:42px;height:42px;border-radius:14px;background:var(--primary);color:#fff;font-size:14px}.nav{display:flex;align-items:center;gap:18px;font-size:14px}.nav a{color:var(--ink)}.navtoggle{display:none;background:none;color:var(--ink);font-size:24px;padding:4px}main{min-height:calc(100vh - 150px);padding:34px 0 60px}.hero{padding:54px;border-radius:28px;background:linear-gradient(135deg,#dff1ea,#f8eede);box-shadow:var(--shadow);display:grid;grid-template-columns:1.4fr .6fr;gap:28px;align-items:center}.hero h1{font-size:clamp(2.2rem,5vw,4.4rem);line-height:1.04;margin:8px 0 18px;letter-spacing:-.04em}.hero p{font-size:1.15rem;color:#52645f;max-width:730px}.eyebrow{display:inline-flex;padding:6px 11px;border-radius:999px;background:var(--soft);color:var(--primary2);font-weight:800;font-size:12px;text-transform:uppercase;letter-spacing:.08em}.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}.button,button{display:inline-flex;justify-content:center;align-items:center;border:0;border-radius:12px;background:var(--primary);color:#fff;padding:11px 17px;font:inherit;font-weight:750;cursor:pointer}.button:hover,button:hover{background:var(--primary2);text-decoration:none}.button.secondary{background:#fff;color:var(--ink);border:1px solid var(--line)}.button.danger{background:var(--danger)}.small{padding:7px 11px;font-size:13px}.grid{display:grid;gap:18px}.grid.two{grid-template-columns:repeat(2,minmax(0,1fr))}.grid.three{grid-template-columns:repeat(3,minmax(0,1fr))}.grid.four{grid-template-columns:repeat(4,minmax(0,1fr))}.section{margin-top:34px}.section-head{display:flex;justify-content:space-between;gap:20px;align-items:end;margin-bottom:15px}.section-head h1,.section-head h2{margin:0}.card{background:var(--surface);border:1px solid var(--line);border-radius:18px;padding:22px;box-shadow:0 5px 20px rgba(43,78,69,.04)}.card h2,.card h3{margin-top:0}.stat strong{font-size:2rem;display:block}.stat span{color:var(--muted)}.list{display:grid;gap:10px}.item{padding:15px;border:1px solid var(--line);border-radius:14px;background:#fff}.item:hover{border-color:#b9d3ca}.meta{display:flex;flex-wrap:wrap;gap:10px;color:var(--muted);font-size:13px}.form-grid{display:grid;gap:16px}.form-grid.two{grid-template-columns:1fr 1fr}label{display:grid;gap:6px;font-weight:700;font-size:14px}input,textarea,select{width:100%;border:1px solid #cddbd6;border-radius:11px;background:#fff;padding:11px 12px;font:inherit;color:var(--ink)}textarea{min-height:150px;resize:vertical}input:focus,textarea:focus,select:focus{outline:3px solid #d8ebe5;border-color:var(--primary)}small,.muted{color:var(--muted)}.alert{padding:13px 15px;border-radius:12px;margin-bottom:16px;background:#edf5f2}.alert.success{background:#e6f5ec;color:#27633f}.alert.warning{background:#fff2cf;color:#765717}.alert.danger{background:#fde8e8;color:#8a3131}.badge{display:inline-flex;border-radius:999px;padding:4px 9px;background:var(--soft);font-size:12px;font-weight:750}.badge.warn{background:#fff0ca;color:#795817}.badge.danger{background:#f9dddd;color:#8b3535}.avatar{width:44px;height:44px;border-radius:50%;display:grid;place-items:center;background:#dcece6;font-weight:850}.person{display:flex;gap:12px;align-items:center}.post{display:grid;grid-template-columns:170px 1fr;overflow:hidden;padding:0}.post aside{padding:20px;background:#f7faf9;border-right:1px solid var(--line)}.post article{padding:22px;white-space:pre-wrap}.tabs{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:18px}.tabs a{padding:8px 12px;border-radius:10px;background:#fff;border:1px solid var(--line)}.tabs a.active{background:var(--primary);color:#fff}.table-wrap{overflow:auto}.table{width:100%;border-collapse:collapse}.table th,.table td{text-align:left;padding:11px;border-bottom:1px solid var(--line);vertical-align:top}.table th{font-size:12px;text-transform:uppercase;color:var(--muted)}.admin-layout{display:grid;grid-template-columns:220px 1fr;gap:22px}.admin-nav{display:grid;gap:7px;align-content:start}.admin-nav a{padding:10px 12px;border-radius:10px}.admin-nav a:hover{background:var(--soft);text-decoration:none}.install{margin-top:60px;padding:32px}footer{border-top:1px solid var(--line);background:#fff}.footer{min-height:78px;display:flex;align-items:center;justify-content:space-between;color:var(--muted);font-size:14px}.empty{text-align:center;padding:35px;color:var(--muted)}canvas{max-height:320px}.prose{max-width:850px}.prose h2{margin-top:1.8em}@media(max-width:850px){.navtoggle{display:block}.nav{display:none;position:absolute;left:16px;right:16px;top:64px;background:#fff;border:1px solid var(--line);padding:16px;border-radius:16px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch}.nav.open{display:flex}.hero{grid-template-columns:1fr;padding:30px}.grid.two,.grid.three,.grid.four,.form-grid.two{grid-template-columns:1fr}.admin-layout{grid-template-columns:1fr}.admin-nav{grid-template-columns:repeat(2,1fr)}.post{grid-template-columns:1fr}.post aside{border-right:0;border-bottom:1px solid var(--line)}.footer{flex-direction:column;justify-content:center;gap:8px;text-align:center}}

.nav-badge{display:inline-flex;align-items:center;justify-content:center;min-width:20px;height:20px;padding:0 6px;border-radius:999px;background:#d9485f;color:#fff;font-size:.72rem;font-weight:800}.searchbar{display:grid;grid-template-columns:1fr auto;gap:.75rem}.searchbar input{margin:0}@media(max-width:650px){.searchbar{grid-template-columns:1fr}}
.autocomplete-box{position:absolute;z-index:30;left:0;right:0;top:100%;background:#fff;border:1px solid #dce7e5;border-radius:14px;box-shadow:0 16px 40px rgba(23,62,58,.14);overflow:hidden}.autocomplete-box:empty{display:none}.autocomplete-box button{width:100%;border:0;border-radius:0;background:#fff;color:#173e3a;text-align:left;padding:11px 14px;display:flex;justify-content:space-between;gap:12px}.autocomplete-box button:hover{background:#eef9f6}.autocomplete-box small{color:#6d7f7c}.security-codes{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.security-codes code{display:block;padding:10px;background:#eef4f3;border-radius:10px;text-align:center}.toolbar{display:flex;flex-wrap:wrap;gap:8px;margin:14px 0}.button.ghost{background:transparent;color:#25766d;border:1px solid #9acbc5}
/* v2.5 learning and community tools */
.nav{gap:.25rem;flex-wrap:wrap}.nav a{font-size:.9rem}.unread{border-left:4px solid var(--primary)}
.poll-option{display:grid;grid-template-columns:1fr auto;gap:.35rem;padding:.8rem 0}.poll-bar{grid-column:1/-1;height:8px;background:#e7eef0;border-radius:999px;overflow:hidden}.poll-bar i{display:block;height:100%;background:linear-gradient(90deg,#4e9f91,#79c6b7)}
.flashcards{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:1rem}.flashcard{min-height:210px;border:0;background:transparent;perspective:900px;position:relative;color:inherit}.flashcard span{position:absolute;inset:0;border-radius:20px;padding:1.4rem;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:.8rem;backface-visibility:hidden;transition:transform .45s;background:#fff;box-shadow:var(--shadow);border:1px solid var(--line)}.flashcard .back{transform:rotateY(180deg);background:#eef9f5}.flashcard.flipped .front{transform:rotateY(180deg)}.flashcard.flipped .back{transform:rotateY(360deg)}
.result{text-align:center}.result strong{display:block;font-size:3rem;color:var(--primary)}fieldset.card{border:1px solid var(--line)}fieldset.card legend{font-weight:800;padding:0 .4rem}.small-link{display:inline-block;margin:-.5rem 0 1rem 1rem}
@media(max-width:1050px){.nav{max-height:75vh;overflow:auto}}

/* v2.6 kompakte Hauptnavigation mit Dropdowns */
.nav{display:flex;align-items:center;gap:.35rem;flex-wrap:nowrap;overflow:visible}
.nav>a,.nav-dropdown>summary{display:flex;align-items:center;gap:.35rem;padding:.62rem .72rem;border-radius:11px;color:var(--ink);font-size:.9rem;font-weight:700;white-space:nowrap;cursor:pointer;list-style:none}
.nav>a:hover,.nav-dropdown[open]>summary,.nav-dropdown>summary:hover{background:var(--soft);text-decoration:none}
.nav-dropdown{position:relative}
.nav-dropdown>summary::-webkit-details-marker{display:none}
.chevron{font-size:.8rem;opacity:.65;transition:transform .2s ease}
.nav-dropdown[open] .chevron{transform:rotate(180deg)}
.nav-menu{position:absolute;right:0;top:calc(100% + 10px);min-width:235px;padding:.55rem;background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:0 18px 45px rgba(38,75,65,.16);display:grid;gap:.2rem;z-index:40}
.nav-menu a{display:flex;align-items:center;gap:.7rem;padding:.7rem .8rem;border-radius:10px;color:var(--ink);font-weight:650}
.nav-menu a:hover{background:var(--soft);text-decoration:none}
.nav-icon{width:1.3rem;text-align:center}
.nav-separator{height:1px;background:var(--line);margin:.35rem .2rem}
.nav-badge{margin-left:.15rem}
@media(max-width:1050px){
 .navtoggle{display:block}
 .nav{display:none;position:absolute;left:16px;right:16px;top:64px;background:#fff;border:1px solid var(--line);padding:12px;border-radius:18px;box-shadow:var(--shadow);flex-direction:column;align-items:stretch;max-height:calc(100vh - 90px);overflow:auto}
 .nav.open{display:flex}
 .nav>a,.nav-dropdown>summary{width:100%;justify-content:space-between;padding:.8rem .9rem}
 .nav-dropdown{width:100%}
 .nav-menu{position:static;box-shadow:none;border:0;border-left:3px solid var(--soft);border-radius:0;margin:.2rem 0 .4rem .8rem;padding:.25rem 0 .25rem .55rem;min-width:0}
}