/* IPV4-Trainer */

#ipv4-trainer{--bg:#f7f8fa;--card:#fff;--text:#17202a;--muted:#5f6b76;--border:#d9dee5;--accent:#2563eb;--accent-soft:#eaf1ff;--ok:#16794b;--ok-bg:#eaf8f0;--bad:#b42318;--bad-bg:#fff0ee;--warn:#9a6700;--warn-bg:#fff7db;font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--text);background:var(--bg);line-height:1.55;padding:1rem;border-radius:14px}
#ipv4-trainer *{box-sizing:border-box}
#ipv4-trainer .wrap{max-width:980px;margin:0 auto}
#ipv4-trainer h1,#ipv4-trainer h2,#ipv4-trainer h3{line-height:1.2;margin-top:0}
#ipv4-trainer h1{font-size:clamp(1.8rem,4vw,2.5rem);margin-bottom:.4rem}
#ipv4-trainer h2{font-size:1.35rem;margin-bottom:.75rem}
#ipv4-trainer h3{font-size:1.05rem;margin-bottom:.55rem}
#ipv4-trainer .lead,#ipv4-trainer .tiny{color:var(--muted)}
#ipv4-trainer .card{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:1rem;margin:0 0 1rem}
#ipv4-trainer .lesson{border-left:5px solid var(--accent)}
#ipv4-trainer code,#ipv4-trainer .mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
#ipv4-trainer code{background:#eef1f5;border-radius:5px;padding:.08rem .3rem}
#ipv4-trainer pre{background:#111827;color:#f9fafb;border-radius:9px;padding:.85rem;overflow-x:auto;white-space:pre-wrap;word-break:break-word}
#ipv4-trainer .rule{background:var(--accent-soft);border-radius:9px;padding:.75rem .9rem;margin-top:.75rem;font-weight:650}
#ipv4-trainer .grid2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:.7rem}
#ipv4-trainer .mini{background:#f0f3f7;border-radius:9px;padding:.75rem}
#ipv4-trainer .toolbar{display:flex;flex-wrap:wrap;gap:.6rem;align-items:center;margin:1rem 0}
#ipv4-trainer button{border:1px solid var(--border);border-radius:9px;min-height:44px;padding:.65rem .9rem;font:inherit;font-weight:650;cursor:pointer;background:#fff;color:var(--text)}
#ipv4-trainer button.primary{background:var(--accent);color:#fff;border-color:var(--accent)}
#ipv4-trainer .answer-row{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:.65rem;margin-top:.7rem}
#ipv4-trainer input[type=text]{width:100%;min-height:44px;border:1px solid var(--border);border-radius:9px;padding:.65rem .75rem;font:16px ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;background:#fff;color:var(--text)}
#ipv4-trainer .feedback,#ipv4-trainer .hint{display:none;margin-top:.7rem;padding:.7rem .8rem;border-radius:8px}
#ipv4-trainer .feedback.ok{display:block;background:var(--ok-bg);color:var(--ok);border:1px solid #b8e6cb}
#ipv4-trainer .feedback.bad{display:block;background:var(--bad-bg);color:var(--bad);border:1px solid #f2c3bd}
#ipv4-trainer .hint.show{display:block;background:var(--warn-bg);color:#6f4b00;border:1px solid #f0d26b}
#ipv4-trainer .progress{height:12px;background:#e7eaf0;border-radius:999px;overflow:hidden;flex:1 1 220px;min-width:160px}
#ipv4-trainer .progress>div{height:100%;width:0;background:var(--accent);transition:width .25s ease}
#ipv4-trainer .score{font-weight:750;white-space:nowrap}
#ipv4-trainer .section-label{display:inline-block;font-size:.82rem;font-weight:800;text-transform:uppercase;letter-spacing:.06em;color:var(--accent);margin-bottom:.4rem}
#ipv4-trainer .hidden{display:none!important}
#ipv4-trainer .question-number{display:inline-flex;align-items:center;justify-content:center;width:2rem;height:2rem;border-radius:999px;background:var(--accent-soft);color:var(--accent);font-weight:800;margin-right:.45rem}
#ipv4-trainer .final-box{text-align:center;border:2px solid var(--accent)}
@media(max-width:650px){#ipv4-trainer{padding:.65rem}#ipv4-trainer .answer-row,#ipv4-trainer .grid2{grid-template-columns:1fr}#ipv4-trainer button{width:100%}#ipv4-trainer .toolbar button{width:auto}}


/* IPV6-Trainer */

#ipv6-trainer{--bg:#f7f8fa;--card:#fff;--text:#17202a;--muted:#5f6b76;--border:#d9dee5;--accent:#2563eb;--ok:#16794b;--bad:#b42318;font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--text);background:var(--bg);line-height:1.55;padding:1rem;border-radius:14px}
#ipv6-trainer *{box-sizing:border-box}
#ipv6-trainer .wrap{max-width:980px;margin:0 auto}
#ipv6-trainer h1,#ipv6-trainer h2,#ipv6-trainer h3{line-height:1.2;margin-top:0}
#ipv6-trainer h1{font-size:clamp(1.8rem,4vw,2.5rem);margin-bottom:.4rem}
#ipv6-trainer h2{font-size:1.35rem}
#ipv6-trainer h3{font-size:1.05rem}
#ipv6-trainer .lead,#ipv6-trainer .tiny{color:var(--muted)}
#ipv6-trainer .card{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:1rem;margin:0 0 1rem}
#ipv6-trainer .lesson{border-left:5px solid var(--accent)}
#ipv6-trainer code,#ipv6-trainer .mono{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
#ipv6-trainer code{background:#eef1f5;border-radius:5px;padding:.08rem .3rem}
#ipv6-trainer pre{background:#111827;color:#f9fafb;border-radius:9px;padding:.85rem;overflow-x:auto;white-space:pre-wrap;word-break:break-word}
#ipv6-trainer .rule{background:#eaf1ff;border-radius:9px;padding:.75rem .9rem;margin-top:.75rem;font-weight:650}
#ipv6-trainer .binary-grid{display:grid;grid-template-columns:repeat(8,minmax(0,1fr));gap:.25rem;max-width:520px;margin:.65rem 0}
#ipv6-trainer .binary-grid span{text-align:center;padding:.5rem .2rem;border-radius:6px;background:#eef1f5;font-family:ui-monospace,monospace}
#ipv6-trainer .toolbar{display:flex;flex-wrap:wrap;gap:.6rem;align-items:center;margin:1rem 0}
#ipv6-trainer button{border:1px solid var(--border);border-radius:9px;min-height:44px;padding:.65rem .9rem;font:inherit;font-weight:650;cursor:pointer;background:#fff;color:var(--text)}
#ipv6-trainer button.primary{background:var(--accent);color:#fff;border-color:var(--accent)}
#ipv6-trainer .answer-row{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:.65rem;margin-top:.7rem}
#ipv6-trainer input[type=text]{width:100%;min-height:44px;border:1px solid var(--border);border-radius:9px;padding:.65rem .75rem;font:16px ui-monospace,SFMono-Regular,Menlo,Consolas,monospace}
#ipv6-trainer .feedback,#ipv6-trainer .hint{display:none;margin-top:.7rem;padding:.7rem .8rem;border-radius:8px}
#ipv6-trainer .feedback.ok{display:block;background:#eaf8f0;color:var(--ok);border:1px solid #b8e6cb}
#ipv6-trainer .feedback.bad{display:block;background:#fff0ee;color:var(--bad);border:1px solid #f2c3bd}
#ipv6-trainer .hint.show{display:block;background:#fff7db;color:#6f4b00;border:1px solid #f0d26b}
#ipv6-trainer .progress{height:12px;background:#e7eaf0;border-radius:999px;overflow:hidden;flex:1 1 220px;min-width:160px}
#ipv6-trainer .progress>div{height:100%;width:0;background:var(--accent);transition:width .25s ease}
#ipv6-trainer .score{font-weight:750;white-space:nowrap}
#ipv6-trainer .section-label{display:inline-block;font-size:.82rem;font-weight:800;text-transform:uppercase;letter-spacing:.06em;color:var(--accent);margin-bottom:.4rem}
#ipv6-trainer .hidden{display:none!important}
#ipv6-trainer .question-number{display:inline-flex;align-items:center;justify-content:center;width:2rem;height:2rem;border-radius:999px;background:#eaf1ff;color:var(--accent);font-weight:800;margin-right:.45rem}
#ipv6-trainer .final-box{text-align:center;border:2px solid var(--accent)}
@media(max-width:650px){#ipv6-trainer{padding:.65rem}#ipv6-trainer .answer-row{grid-template-columns:1fr}#ipv6-trainer button{width:100%}#ipv6-trainer .toolbar button{width:auto}}


/* Portal-Integration */
.daa-network-trainer-intro {
    margin: 0 0 1rem;
    padding: .85rem 1rem;
    border: 1px solid #8ab4ec;
    border-left: 5px solid #2563eb;
    border-radius: 10px;
    background: #eef6ff;
    color: #17365d;
}

.daa-network-trainer-intro strong {
    display: block;
    margin-bottom: .2rem;
}

.daa-network-symbol {
    width: 3.4rem;
    height: 3.4rem;
    color: #1557a6;
    filter: drop-shadow(0 2px 2px rgb(0 0 0 / 12%));
}

.daa-network-symbol circle,
.daa-network-symbol path {
    vector-effect: non-scaling-stroke;
}

[data-daa-network-trainer] .solution-btn {
    margin-left: .45rem;
    border-color: #d59b24;
    background: #fff7db;
    color: #6f4b00;
}

[data-daa-network-trainer] .feedback.solution {
    display: block;
    border: 1px solid #8ab4ec;
    background: #eef6ff;
    color: #17365d;
}

[data-daa-network-trainer] .trainer-grade {
    padding: .3rem .55rem;
    border-radius: 7px;
    background: #eaf1ff;
    color: #164da2;
}

.lf10__trainer-links {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1rem;
    margin: 1rem 0 1.25rem;
}

.lf10__trainer-link {
    display: block;
    padding: 1rem;
    border: 1px solid #8ab4ec;
    border-radius: 12px;
    background: linear-gradient(135deg, #f7fbff, #eaf3ff);
    color: #17365d;
    text-decoration: none;
}

.lf10__trainer-link:hover,
.lf10__trainer-link:focus-visible {
    border-color: #2563eb;
    box-shadow: 0 7px 20px rgb(37 99 235 / 16%);
    transform: translateY(-1px);
}

.lf10__trainer-link strong,
.lf10__trainer-link span {
    display: block;
}

.lf10__trainer-link span {
    margin-top: .35rem;
    color: #52677e;
}

@media (max-width: 700px) {
    .lf10__trainer-links {
        grid-template-columns: 1fr;
    }
}

.daa-network-trainer-page {
    width: min(1120px, 100%);
    margin: 0 auto;
}

.daa-network-trainer-page .lf10__hero {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    align-items: center;
    gap: 1.25rem;
    margin: 0 0 1.25rem;
    padding: clamp(1.25rem, 3vw, 2rem);
    border: 1px solid #1b67b8;
    border-radius: 18px;
    background: linear-gradient(135deg, #174f9c 0%, #287fcd 65%, #3aa2df 100%);
    box-shadow: 0 14px 32px rgb(22 75 135 / 20%);
    color: #fff;
}

.daa-network-trainer-page .lf10__hero-mark {
    display: grid;
    width: 5.5rem;
    height: 5.5rem;
    place-items: center;
    border-radius: 20px;
}

.daa-network-trainer-page .lf10__hero .eyebrow {
    margin: 0 0 .25rem;
    color: #dceeff;
    font-size: .77rem;
    font-weight: 800;
    letter-spacing: .08em;
    text-transform: uppercase;
}

.daa-network-trainer-page .lf10__hero h1 {
    margin: 0;
    color: #fff;
    font-size: clamp(2rem, 4vw, 3rem);
    line-height: 1.05;
}

.daa-network-trainer-page .lf10__hero p:last-child {
    margin: .5rem 0 0;
    color: #edf7ff;
}

[data-daa-network-trainer] {
    border: 1px solid #c9d8ea;
    box-shadow: 0 14px 34px rgb(24 71 123 / 12%);
}

[data-daa-network-trainer] .card {
    box-shadow: 0 4px 14px rgb(24 71 123 / 7%);
}

[data-daa-network-trainer] .question {
    transition: border-color .18s ease, box-shadow .18s ease;
}

[data-daa-network-trainer] .question:focus-within {
    border-color: #6ea4e4;
    box-shadow: 0 0 0 3px rgb(37 99 235 / 12%);
}

[data-daa-network-trainer] input[type="text"]:focus {
    border-color: #2563eb;
    outline: 3px solid rgb(37 99 235 / 15%);
    outline-offset: 1px;
}

[data-daa-network-trainer] button {
    transition: transform .14s ease, box-shadow .14s ease, background-color .14s ease;
}

[data-daa-network-trainer] button:hover:not(:disabled),
[data-daa-network-trainer] button:focus-visible:not(:disabled) {
    transform: translateY(-1px);
    box-shadow: 0 4px 11px rgb(24 71 123 / 16%);
}

[data-daa-network-trainer] button:disabled {
    cursor: not-allowed;
    opacity: .58;
}

[data-daa-network-trainer] .feedback {
    font-weight: 650;
}

[data-daa-network-trainer] .final-box {
    background: linear-gradient(135deg, #f7fbff, #eaf3ff);
}

.lf10__hero-mark:has(.daa-network-symbol) {
    background: linear-gradient(145deg, #ffffff, #dcecff);
    border: 1px solid rgb(255 255 255 / 75%);
}

@media (max-width: 650px) {
    .daa-network-trainer-page .lf10__hero {
        grid-template-columns: 1fr;
    }

    .daa-network-trainer-page .lf10__hero-mark {
        width: 4.5rem;
        height: 4.5rem;
    }

    [data-daa-network-trainer] .hint-btn,
    [data-daa-network-trainer] .solution-btn {
        width: 100%;
        margin: .4rem 0 0;
    }
}