:root{
  --paper:#F5F7F6;--white:#FFFFFF;--ink:#14272C;--muted:#4A5F64;
  --petrol:#0F5661;--petrol-d:#0A3940;--petrol-l:#E3EEEE;
  --amber:#E2A23B;--amber-l:#FBF1DE;--line:#D5DEDD;
  --ok:#2E7D4F;--ok-l:#E3F2E9;--bad:#B3261E;--bad-l:#FBE9E7;
  --radius-s:8px;--radius-l:18px;
  --font:"Segoe UI Variable Text","Segoe UI",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
  --font-d:"Segoe UI Variable Display","Segoe UI",system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
}
*,*::before,*::after{box-sizing:border-box}
[hidden]{display:none!important}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);font:400 1.0625rem/1.6 var(--font);min-height:100vh;display:flex;flex-direction:column}
img{max-width:100%;height:auto;display:block}
a{color:var(--petrol);text-underline-offset:3px}
:focus-visible{outline:3px solid var(--amber);outline-offset:2px;border-radius:3px}
h1,h2,h3{font-family:var(--font-d);line-height:1.2;margin:0 0 .5em;letter-spacing:-.01em;color:var(--petrol-d)}
h1{font-size:clamp(1.7rem,3.6vw,2.4rem)}
h2{font-size:clamp(1.3rem,2.4vw,1.7rem)}
h3{font-size:1.1rem}
p{margin:0 0 1em}
.wrap{max-width:1180px;margin:0 auto;padding:0 clamp(16px,4vw,36px);width:100%}
main{flex:1}

/* Kopf */
.ak-top{background:var(--petrol-d);color:var(--white)}
.ak-top .wrap{display:flex;align-items:center;gap:16px;min-height:70px}
.ak-brand{display:flex;align-items:center;gap:12px;color:var(--white);text-decoration:none}
.ak-brand svg{width:34px;height:42px;flex:none}
.ak-brand b{font:700 1.15rem/1.1 var(--font-d);letter-spacing:.01em;display:block}
.ak-brand span{font-size:.8rem;color:#B9CFD1;letter-spacing:.12em;text-transform:uppercase}
.ak-user{margin-left:auto;display:flex;align-items:center;gap:14px;font-size:.95rem}
.ak-user .who{color:#D2E2E3}
.ak-user a,.ak-user button{color:var(--white);background:none;border:1px solid rgba(255,255,255,.35);border-radius:999px;padding:7px 14px;font:600 .9rem var(--font);cursor:pointer;text-decoration:none}
.ak-user a:hover,.ak-user button:hover{background:rgba(255,255,255,.1)}
@media (max-width:560px){.ak-user .who,.ak-user a{display:none}}
.ak-brand b{white-space:nowrap}

/* Fuß */
.ak-foot{border-top:1px solid var(--line);background:var(--white);font-size:.88rem;color:var(--muted)}
.ak-foot .wrap{display:flex;flex-wrap:wrap;gap:8px 20px;padding-top:18px;padding-bottom:18px}
.ak-foot .wrap span:first-child{margin-right:auto}
.ak-foot a{color:var(--muted)}

/* Bausteine */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;background:var(--petrol);color:var(--white);padding:12px 22px;border-radius:999px;text-decoration:none;border:0;font:650 1rem var(--font);cursor:pointer}
.btn:hover{background:var(--petrol-d);color:var(--white)}
.btn[disabled]{opacity:.55;cursor:not-allowed}
.btn.alt{background:transparent;color:var(--petrol);box-shadow:inset 0 0 0 2px var(--petrol)}
.btn.alt:hover{background:var(--petrol-l)}
.btn.amber{background:var(--amber);color:var(--petrol-d)}
.btn.amber:hover{background:#D4932C}
.card{background:var(--white);border:1px solid var(--line);border-radius:var(--radius-l);padding:clamp(20px,3vw,32px)}
.muted{color:var(--muted)}
.small{font-size:.9rem}
.notice{border-radius:var(--radius-s);padding:12px 16px;margin:0 0 16px;font-size:.95rem}
.notice.err{background:var(--bad-l);color:var(--bad)}
.notice.ok{background:var(--ok-l);color:var(--ok)}
.notice.info{background:var(--amber-l);color:#7A5208}
.skel{background:linear-gradient(90deg,#E8EEED 25%,#F3F6F5 50%,#E8EEED 75%);background-size:200% 100%;animation:sk 1.2s infinite;border-radius:8px}
@keyframes sk{to{background-position:-200% 0}}

/* Login */
.ak-login{display:grid;grid-template-columns:1.1fr 1fr;min-height:calc(100vh - 70px - 60px)}
.ak-login .intro{background:var(--petrol) radial-gradient(circle at 80% 20%,#14707D 0%,#0F5661 40%,#0A3940 100%);color:var(--white);padding:clamp(32px,6vw,72px);display:flex;flex-direction:column;justify-content:center}
.ak-login .intro h1{color:var(--white);max-width:16ch}
.ak-login .intro p{color:#D2E2E3;max-width:46ch}
.ak-login .intro ol{list-style:none;counter-reset:s;padding:0;margin:18px 0 0;display:grid;gap:12px}
.ak-login .intro li{counter-increment:s;display:flex;gap:12px;align-items:flex-start;color:#E6F0F0}
.ak-login .intro li::before{content:counter(s);flex:none;display:grid;place-items:center;width:28px;height:28px;border-radius:50%;background:var(--amber);color:var(--petrol-d);font-weight:700;font-size:.9rem}
.ak-login .form-side{display:flex;align-items:center;justify-content:center;padding:clamp(24px,5vw,56px)}
.ak-form{width:100%;max-width:420px}
.tabs{display:flex;background:var(--petrol-l);border-radius:999px;padding:4px;margin-bottom:22px}
.tabs button{flex:1;border:0;background:none;padding:10px;border-radius:999px;font:650 .95rem var(--font);color:var(--petrol-d);cursor:pointer}
.tabs button[aria-selected=true]{background:var(--white);box-shadow:0 1px 4px rgba(10,57,64,.15)}
label{display:block;font-weight:600;font-size:.92rem;margin:0 0 6px}
input[type=text],input[type=email],input[type=password]{width:100%;padding:12px 14px;border:1.5px solid var(--line);border-radius:var(--radius-s);font:400 1rem var(--font);background:var(--white);color:var(--ink)}
input:focus{border-color:var(--petrol);outline:none;box-shadow:0 0 0 3px var(--petrol-l)}
.field{margin-bottom:16px}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.ak-form .btn{width:100%;margin-top:6px}
@media (max-width:860px){.ak-login{grid-template-columns:1fr}.ak-login .intro{padding:32px 20px}}

/* Kursliste */
.page{padding:clamp(28px,5vw,56px) 0}
.page-title{display:flex;flex-wrap:wrap;align-items:end;gap:12px;margin-bottom:26px}
.page-title p{margin:0;color:var(--muted)}
.courses{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:20px}
.course{display:flex;flex-direction:column;gap:12px}
.course .tag{align-self:flex-start;font-size:.78rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;padding:4px 10px;border-radius:999px;background:var(--petrol-l);color:var(--petrol-d)}
.course .tag.done{background:var(--ok-l);color:var(--ok)}
.course h2{font-size:1.3rem;margin:0}
.course .btn{margin-top:auto;align-self:flex-start}
.bar{height:10px;background:var(--petrol-l);border-radius:999px;overflow:hidden}
.bar b{display:block;height:100%;background:linear-gradient(90deg,var(--petrol),#14707D);border-radius:999px;transition:width .4s}
.bar-label{display:flex;justify-content:space-between;font-size:.88rem;color:var(--muted);margin-top:4px}
.empty{text-align:center;max-width:560px;margin:20px auto}

/* Kursplayer */
.player{display:grid;grid-template-columns:320px 1fr;gap:24px;align-items:start}
.outline{position:sticky;top:16px;padding:20px}
.outline h2{font-size:1.1rem;margin-bottom:4px}
.outline .bar{margin:10px 0 4px}
.mod{margin-top:18px}
.mod h3{font-size:.86rem;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);margin:0 0 6px}
.mod ul{list-style:none;margin:0;padding:0}
.mod li button{width:100%;display:flex;align-items:center;gap:10px;text-align:left;background:none;border:0;padding:8px 10px;border-radius:var(--radius-s);font:500 .95rem var(--font);color:var(--ink);cursor:pointer}
.mod li button:hover:not([disabled]){background:var(--petrol-l)}
.mod li button[aria-current=step]{background:var(--petrol-l);color:var(--petrol-d);font-weight:650}
.mod li button[disabled]{color:#9AAAAD;cursor:not-allowed}
.ic{flex:none;width:22px;height:22px;border-radius:50%;display:grid;place-items:center;font-size:.72rem;font-weight:700;border:2px solid var(--line);color:var(--muted)}
.ic.done{background:var(--ok);border-color:var(--ok);color:var(--white)}
.ic.lock{border-style:dashed}
.ic.cert{border-color:var(--amber);color:#9A6A14}
.stage{min-height:420px}
.stage .kind{font-size:.8rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--amber);margin-bottom:6px}
.rich p{max-width:72ch}
.rich img{border-radius:var(--radius-s);margin:12px 0}
.media-ph{aspect-ratio:16/9;border-radius:var(--radius-l);background:var(--petrol-d) radial-gradient(circle at 70% 30%,#14707D 0%,#0A3940 70%);color:#D2E2E3;display:grid;place-items:center;text-align:center;padding:20px;margin:6px 0 20px}
.media-ph .play{width:72px;height:72px;border-radius:50%;background:var(--amber);display:grid;place-items:center;margin:0 auto 12px}
.media-ph .play::after{content:"";border-left:22px solid var(--petrol-d);border-top:14px solid transparent;border-bottom:14px solid transparent;margin-left:6px}
.media-ph.slides .play{border-radius:10px}
.media-ph.slides .play::after{border:0;width:30px;height:22px;background:var(--petrol-d);border-radius:3px;margin:0}
.stage-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:24px;padding-top:20px;border-top:1px solid var(--line)}
.q{border:1px solid var(--line);border-radius:var(--radius-s);padding:16px 18px;margin-bottom:14px}
.q legend{font-weight:650;padding:0 4px}
.q label{font-weight:400;display:flex;gap:10px;align-items:flex-start;padding:6px 4px;margin:0;cursor:pointer}
.q input{margin-top:5px}
.q.right{border-color:var(--ok);background:var(--ok-l)}
.q.wrong{border-color:var(--bad);background:var(--bad-l)}
.q .fb{font-size:.9rem;margin:6px 4px 0}
.cert-box{text-align:center;padding:clamp(24px,5vw,48px)}
.cert-box .seal{width:84px;height:84px;margin:0 auto 14px;border-radius:50%;background:var(--amber-l);display:grid;place-items:center}
@media (max-width:900px){.player{grid-template-columns:1fr}.outline{position:static}.stage{order:-1}}
/* Rechtstexte / AVV */
.legal{max-width:860px}
.legal h1{margin-bottom:.4em}
.legal h2{font-size:1.3rem;margin:1.8em 0 .5em}
.legal p,.legal li{max-width:78ch}
.legal ul{padding-left:1.2em}
.lead-s{font-size:1.1rem;color:var(--muted)}
.kicker{font-size:.8rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--amber);margin:0 0 6px}
.avv-actions{display:flex;flex-wrap:wrap;gap:12px;margin:18px 0 28px}
.contract{background:var(--white);border:1px solid var(--line);border-radius:var(--radius-l);padding:clamp(20px,4vw,40px)}
.contract h2:first-of-type{margin-top:1.2em}
.parties{display:grid;grid-template-columns:1fr 1fr;gap:20px;padding-bottom:18px;border-bottom:1px solid var(--line)}
.parties p{margin:0}
.pl{font-size:.8rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);margin-bottom:6px!important}
.sub-table{width:100%;border-collapse:collapse;font-size:.95rem;table-layout:fixed}
.sub-table th,.sub-table td{overflow-wrap:break-word;hyphens:auto}
.sub-table th:nth-child(1){width:28%}.sub-table th:nth-child(2){width:31%}
.sub-table th,.sub-table td{border:1px solid var(--line);padding:10px 12px;text-align:left;vertical-align:top}
.sub-table th{background:var(--petrol-l);color:var(--petrol-d)}
@media (max-width:640px){.sub-table,.sub-table tbody,.sub-table tr,.sub-table td{display:block;width:100%}.sub-table thead{display:none}.sub-table td{border-top:0}.sub-table tr td:first-child{border-top:1px solid var(--line);font-weight:650}}
.sign{margin-top:26px;padding:16px 18px;border:2px solid var(--petrol);border-radius:var(--radius-s)}
.sign h2{margin-top:0!important}
.avv-form{margin-top:28px}
.avv-form .btn{margin-top:14px}
label.check{display:flex;gap:10px;align-items:flex-start;font-weight:400;margin:6px 0 4px;cursor:pointer}
label.check input{margin-top:5px;flex:none}
@media (max-width:640px){.parties{grid-template-columns:1fr}}
@media print{
  .ak-top,.ak-foot,.no-print,[data-msg]{display:none!important}
  body{background:#fff;font-size:11pt}
  .page{padding:0}
  .contract{border:0;padding:0}
  .legal h2{break-after:avoid}
  a{color:inherit;text-decoration:none}
}