/* Nòduls v0.8.0-alpha.20 · Neural Hero Scene · component aïllat */

/* La Home ja no mostra una barra superior com a navbar. El logotip
   es reubica dins del Hero, just damunt de l'eyebrow. */
.landing-brandbar{display:none!important}
.landing-hero{
    position:relative;
    isolation:isolate;
    width:100%;
    max-width:none;
    min-height:700px;
    margin:0;
    padding-inline:max(24px,calc((100vw - var(--landing-width))/2));
    display:grid;
    grid-template-columns:1fr;
    align-items:center;
    overflow:visible;
}
.landing-hero::before{
    content:"";
    position:absolute;
    inset:-4% 0 -4%;
    z-index:2;
    pointer-events:none;
    background:
        linear-gradient(90deg,
            rgba(3,10,23,.995) 0%,
            rgba(3,10,23,.985) 21%,
            rgba(3,10,23,.92) 33%,
            rgba(3,10,23,.62) 46%,
            rgba(3,10,23,.24) 58%,
            rgba(3,10,23,.06) 71%,
            transparent 84%),
        linear-gradient(180deg,rgba(3,10,23,.28),transparent 13%,transparent 86%,rgba(3,10,23,.74));
}
.landing-hero__content{
    position:relative;
    z-index:4;
    width:min(560px,38vw);
    max-width:560px;
    padding-top:18px;
}
.landing-hero__brandmark{
    display:inline-flex;
    align-items:center;
    margin:0 0 18px;
}
.landing-hero__brandmark img{
    width:182px;
    max-height:40px;
    display:block;
    object-fit:contain;
    object-position:left center;
}
.landing-eyebrow{margin:0 0 14px}
.landing-hero h1{
    max-width:540px;
    font-size:clamp(2.65rem,3.85vw,4.25rem);
    line-height:1.01;
    letter-spacing:-.038em;
}
.landing-hero__summary{max-width:540px;margin:22px 0 0;font-size:1rem;line-height:1.65}
.landing-hero__actions{
    align-items:stretch;
    flex-wrap:wrap;
    gap:12px;
}
.landing-hero__visual{
    position:absolute;
    z-index:1;
    inset:-34px 0 -20px;
    min-width:0;
    min-height:0;
    display:block;
    overflow:visible;
}
.landing-validation{
    position:relative;
    z-index:6;
}

/* CTA + selector de sabers. */
.landing-hero__actions{
    align-items:stretch;
    flex-wrap:wrap;
}
.landing-saber-picker{
    --picker-panel-width:390px;
    position:relative;
    width:min(296px,100%);
    min-width:250px;
    z-index:18;
}
.landing-saber-picker__field{
    position:relative;
    height:46px;
    display:flex;
    align-items:center;
    border:1px solid rgba(160,168,255,.26);
    border-radius:.2rem;
    background:rgba(8,17,36,.80);
    box-shadow:inset 0 1px 0 rgba(255,255,255,.025),0 10px 26px rgba(0,0,0,.16);
    backdrop-filter:blur(14px);
    transition:border-color .18s ease,background .18s ease,box-shadow .18s ease;
}
.landing-saber-picker:focus-within .landing-saber-picker__field{
    border-color:rgba(174,168,255,.62);
    background:rgba(11,22,46,.94);
    box-shadow:0 0 0 3px rgba(111,104,255,.10),0 16px 36px rgba(0,0,0,.22);
}
.landing-saber-picker__icon{
    width:17px;
    height:17px;
    margin-left:14px;
    flex:0 0 auto;
    fill:none;
    stroke:#929fbd;
    stroke-width:1.8;
    stroke-linecap:round;
    stroke-linejoin:round;
}
.landing-saber-picker__input{
    width:100%;
    min-width:0;
    height:100%;
    padding:0 36px 0 10px;
    border:0;
    outline:0;
    background:transparent;
    color:#f5f7ff;
    font:650 .78rem/1 system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
}
.landing-saber-picker__input::placeholder{color:#a8b2ca;opacity:1}
.landing-saber-picker__clear{
    position:absolute;
    right:8px;
    top:50%;
    width:28px;
    height:28px;
    padding:0;
    border:0;
    background:transparent;
    color:#99a5bf;
    font-size:1.05rem;
    line-height:1;
    cursor:pointer;
    transform:translateY(-50%);
}
.landing-saber-picker__clear[hidden]{display:none}
.landing-saber-picker__clear:hover,.landing-saber-picker__clear:focus-visible{color:#fff;outline:none}
.landing-saber-picker__panel{
    position:absolute;
    top:-22px;
    left:calc(100% + 16px);
    width:var(--picker-panel-width);
    border:1px solid rgba(159,169,255,.24);
    border-radius:.22rem;
    background:linear-gradient(180deg,rgba(8,17,36,.985),rgba(5,13,29,.965));
    box-shadow:0 28px 72px rgba(0,0,0,.48),inset 0 1px 0 rgba(255,255,255,.04);
    backdrop-filter:blur(18px);
    overflow:hidden;
}
.landing-saber-picker.is-panel-below .landing-saber-picker__panel{
    top:calc(100% + 10px);
    left:0;
    width:min(420px,calc(100vw - 56px));
}
.landing-saber-picker__panel[hidden]{display:none}
.landing-saber-picker__panel::before{
    content:"";
    position:absolute;
    inset:0 0 auto;
    height:56px;
    pointer-events:none;
    background:linear-gradient(180deg,rgba(87,101,255,.10),rgba(87,101,255,0));
}
.landing-saber-picker__panel-head{
    position:relative;
    padding:14px 16px 12px;
    border-bottom:1px solid rgba(255,255,255,.06);
}
.landing-saber-picker__panel-head strong{display:block;color:#eef2ff;font-size:.78rem;font-weight:750;line-height:1.3}
.landing-saber-picker__panel-head span{display:block;margin-top:4px;color:#9da7c0;font-size:.67rem;line-height:1.35}
.landing-saber-picker__results{
    position:relative;
    max-height:352px;
    margin:0;
    padding:8px 6px 10px;
    overflow:auto;
    border:0;
    background:transparent;
    box-shadow:none;
    list-style:none;
    scrollbar-width:thin;
    scrollbar-color:rgba(152,160,255,.42) rgba(255,255,255,.04);
}
.landing-saber-picker__results::-webkit-scrollbar{width:10px}
.landing-saber-picker__results::-webkit-scrollbar-track{background:rgba(255,255,255,.04)}
.landing-saber-picker__results::-webkit-scrollbar-thumb{background:linear-gradient(180deg,rgba(122,129,255,.68),rgba(93,113,242,.44));border-radius:99px;border:2px solid rgba(5,13,29,.9)}
.landing-saber-picker__option{
    display:grid;
    gap:4px;
    padding:10px 11px;
    border-radius:.15rem;
    color:#eef1fb;
    cursor:pointer;
}
.landing-saber-picker__option:hover,
.landing-saber-picker__option.is-active{background:rgba(108,111,255,.15)}
.landing-saber-picker__option strong{
    display:-webkit-box;
    overflow:hidden;
    -webkit-box-orient:vertical;
    -webkit-line-clamp:2;
    font-size:.75rem;
    font-weight:680;
    line-height:1.34;
}
.landing-saber-picker__option span{
    overflow:hidden;
    color:#929db8;
    font-size:.65rem;
    line-height:1.25;
    text-overflow:ellipsis;
    white-space:nowrap;
}
.landing-saber-picker__empty{padding:14px 11px;color:#9ca7bf;font-size:.72rem;line-height:1.4}
.landing-saber-picker__label{
    position:absolute!important;
    width:1px!important;
    height:1px!important;
    padding:0!important;
    margin:-1px!important;
    overflow:hidden!important;
    clip:rect(0,0,0,0)!important;
    white-space:nowrap!important;
    border:0!important;
}

.knowledge-graph{
    --kg-text:#f7f8ff;
    --kg-soft:#abb5d0;
    --kg-accent:#9f93ff;
    position:relative;
    isolation:isolate;
    width:100%;
    height:100%;
    min-width:0;
    margin:0;
    color:var(--kg-text);
}
.knowledge-graph::before{
    content:"";
    position:absolute;
    z-index:-3;
    inset:1% -3% 0 35%;
    border-radius:50%;
    background:
        radial-gradient(circle at 64% 47%,rgba(82,112,255,.115),rgba(59,83,210,.052) 40%,transparent 72%),
        radial-gradient(circle at 74% 29%,rgba(179,121,255,.045),transparent 43%),
        radial-gradient(circle at 52% 69%,rgba(67,196,255,.04),transparent 46%);
    filter:blur(58px);
    pointer-events:none;
}
.knowledge-graph__aura{
    position:absolute;
    inset:-2% -2% -2% 34%;
    z-index:-2;
    border-radius:50%;
    background:radial-gradient(circle at 64% 49%,rgba(111,102,255,.10),rgba(72,126,255,.052) 38%,transparent 76%);
    filter:blur(54px);
    pointer-events:none;
}
.knowledge-graph__viewport{
    position:relative;
    width:100%;
    height:100%;
    min-height:780px;
    overflow:visible;
    touch-action:none;
    cursor:grab;
}
.knowledge-graph__viewport.is-dragging{cursor:grabbing}
.knowledge-graph__canvas{
    display:block;
    width:100%;
    height:100%;
    outline:none;
    filter:drop-shadow(0 0 18px rgba(125,121,255,.13)) drop-shadow(0 0 48px rgba(65,101,255,.07));
}
.knowledge-graph__canvas:focus-visible{box-shadow:inset 0 0 0 1px rgba(187,181,255,.42)}
.knowledge-graph__loading,.knowledge-graph__fallback{
    position:absolute;
    inset:0;
    z-index:4;
    display:grid;
    place-content:center;
    justify-items:center;
    gap:10px;
    text-align:center;
    color:var(--kg-soft);
    font-size:.8rem;
    transition:opacity .3s ease;
}
.knowledge-graph__loading.is-hidden{opacity:0;pointer-events:none}
.knowledge-graph__loading>span{width:28px;height:28px;border:2px solid rgba(151,161,255,.16);border-top-color:#a99cff;border-radius:50%;animation:kg-spin 1s linear infinite}
.knowledge-graph__loading strong{font-weight:650}
.knowledge-graph__fallback[hidden],.knowledge-card[hidden]{display:none!important}
.knowledge-graph__fallback{padding:28px;background:rgba(5,10,22,.82)}
.knowledge-graph__fallback strong{color:#fff}
.knowledge-graph__fallback span{max-width:28rem}
.knowledge-card{
    position:absolute;
    z-index:8;
    left:calc(max(24px,calc((100vw - var(--landing-width))/2)) + 560px);
    top:50%;
    right:auto;
    bottom:auto;
    width:min(300px,calc(100% - 48px));
    padding:18px 18px 17px;
    border:1px solid rgba(166,174,255,.22);
    border-radius:.2rem;
    background:rgba(6,14,31,.90);
    box-shadow:0 22px 60px rgba(0,0,0,.34),inset 0 1px 0 rgba(255,255,255,.04);
    backdrop-filter:blur(18px);
    transform:translateY(-50%);
    animation:kg-card-in-center .2s ease-out;
}
.knowledge-card__close{position:absolute;top:9px;right:10px;width:28px;height:28px;border:0;background:transparent;color:#b8c0d7;font-size:1.35rem;line-height:1;cursor:pointer}
.knowledge-card__close:hover,.knowledge-card__close:focus-visible{color:#fff;outline:none}
.knowledge-card__eyebrow{margin:0 32px 6px 0;color:#aaa0ff;font-size:.64rem;font-weight:800;letter-spacing:.12em;text-transform:uppercase}
.knowledge-card h3{display:-webkit-box;overflow:hidden;-webkit-box-orient:vertical;-webkit-line-clamp:2;margin:0 32px 14px 0;color:#fff;font-size:1rem;line-height:1.28}
.knowledge-card__meta{display:grid;grid-template-columns:1.15fr .85fr;gap:10px;margin:0}
.knowledge-card__meta div{min-width:0}
.knowledge-card dt{margin-bottom:3px;color:#838fae;font-size:.61rem;font-weight:750;letter-spacing:.07em;text-transform:uppercase}
.knowledge-card dd{margin:0;overflow:hidden;color:#dce1f2;font-size:.72rem;line-height:1.42;text-overflow:ellipsis}
.knowledge-card__related{margin-top:13px;padding-top:12px;border-top:1px solid rgba(255,255,255,.08)}
.knowledge-card__related>span{display:block;margin-bottom:7px;color:#8e99b7;font-size:.61rem;font-weight:750;letter-spacing:.07em;text-transform:uppercase}
.knowledge-card__related ul{display:grid;gap:5px;margin:0;padding:0;list-style:none}
.knowledge-card__related li{min-width:0}
.knowledge-card__related-button{width:100%;min-width:0;display:grid;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:9px;padding:7px 8px;border:1px solid rgba(157,170,255,.11);border-radius:.16rem;background:rgba(255,255,255,.025);color:#cbd2e8;text-align:left;cursor:pointer;transition:background .16s ease,border-color .16s ease,color .16s ease,transform .16s ease}
.knowledge-card__related-button:hover,.knowledge-card__related-button:focus-visible{border-color:rgba(164,180,255,.34);background:rgba(105,116,255,.10);color:#fff;outline:none;transform:translateX(2px)}
.knowledge-card__related-copy{min-width:0;display:grid;gap:2px}
.knowledge-card__related-title{display:block;overflow:hidden;color:inherit;font-size:.69rem;font-weight:650;line-height:1.3;text-overflow:ellipsis;white-space:nowrap}
.knowledge-card__related-meta{display:block;overflow:hidden;color:#7f8ba8;font-size:.58rem;line-height:1.25;text-overflow:ellipsis;white-space:nowrap}
.knowledge-card__related-arrow{color:#a99dff;font-size:.82rem;line-height:1;transition:transform .16s ease}
.knowledge-card__related-button:hover .knowledge-card__related-arrow,.knowledge-card__related-button:focus-visible .knowledge-card__related-arrow{transform:translateX(2px)}
.knowledge-card__cta{min-height:38px;display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:14px;padding:0 13px;border:1px solid rgba(174,167,255,.32);border-radius:.2rem;background:linear-gradient(135deg,rgba(83,103,255,.88),rgba(115,72,220,.9));color:#fff;font-size:.76rem;font-weight:750;box-shadow:0 10px 24px rgba(72,74,208,.2)}
.knowledge-graph__sr{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important}

@keyframes kg-spin{to{transform:rotate(360deg)}}
@keyframes kg-card-in-center{from{opacity:0;transform:translateY(calc(-50% + 10px))}to{opacity:1;transform:translateY(-50%)}}


@keyframes kg-card-in{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}
@media(max-width:1400px) and (min-width:1101px){
    .knowledge-card{left:calc(50% - 46px);width:288px}
}
@media(max-width:1280px){
    .landing-hero__content{width:min(540px,41vw)}
    .landing-saber-picker{--picker-panel-width:360px;width:min(286px,100%);min-width:230px}
}
@media(max-width:1100px){
    .landing-hero__content{width:min(520px,45vw)}
    .landing-saber-picker{--picker-panel-width:340px}
    .landing-saber-picker.is-panel-below .landing-saber-picker__panel,
    .landing-saber-picker__panel{top:calc(100% + 10px);left:0;width:min(420px,calc(100vw - 56px))}
    .knowledge-card{left:auto;top:auto;right:18px;bottom:22px;transform:none;animation:kg-card-in .2s ease-out}
}
@media(max-width:1000px){
    .landing-hero{
        width:min(var(--landing-width),calc(100% - 48px));
        min-height:auto;
        margin:0 auto;
        padding:28px 0 0;
        grid-template-columns:1fr;
        overflow:hidden;
    }
    .landing-hero::before{display:none}
    .landing-hero__content{width:100%;max-width:800px;padding-top:0}
    .landing-hero__brandmark{margin-bottom:16px}
    .landing-hero__brandmark img{width:170px;max-height:38px}
    .landing-hero h1{font-size:clamp(2.4rem,8.6vw,3.5rem)}
    .landing-hero__visual{position:relative;inset:auto;width:100%;min-height:500px;margin-top:-10px}
    .knowledge-graph{width:min(760px,100%);height:auto;margin-inline:auto}
    .knowledge-graph__viewport{height:500px;min-height:500px}
    .landing-saber-picker__panel,.landing-saber-picker.is-panel-below .landing-saber-picker__panel{top:calc(100% + 10px);left:0;width:min(420px,calc(100vw - 56px))}
    .knowledge-card{left:auto;right:16px;bottom:18px;top:auto;transform:none;animation:kg-card-in .2s ease-out}
}
@media(max-width:680px){
    .landing-hero{width:calc(100% - 28px);padding-top:20px}
    .landing-hero__brandmark img{width:158px;max-height:36px}
    .landing-hero__visual{min-height:390px;margin-top:0}
    .knowledge-graph{width:100%}
    .knowledge-graph__viewport{height:390px;min-height:390px}
    .landing-hero__actions{display:grid;grid-template-columns:1fr;gap:10px}
    .landing-button,.landing-saber-picker{width:100%;min-width:0}
    .landing-saber-picker__panel,.landing-saber-picker.is-panel-below .landing-saber-picker__panel{width:calc(100vw - 28px);max-width:none;left:0;top:calc(100% + 10px)}
    .knowledge-card{left:auto;right:8px;bottom:8px;top:auto;width:calc(100% - 16px);padding:16px;transform:none;animation:kg-card-in .2s ease-out}
    .knowledge-card__meta{grid-template-columns:1fr;gap:8px}
}


/* alpha.9 subject search */
.landing-saber-picker__option-head{display:flex;align-items:flex-start;justify-content:space-between;gap:10px}
.landing-saber-picker__kind{display:inline-flex;align-items:center;justify-content:center;flex:0 0 auto;min-height:20px;padding:0 8px;border:1px solid rgba(162,170,255,.18);border-radius:999px;background:rgba(111,104,255,.12);color:#bfc8e8;font-size:.57rem;font-weight:800;letter-spacing:.08em;text-transform:uppercase}
.landing-saber-picker__kind--subject{background:rgba(106,144,255,.14);color:#dce6ff}
.landing-saber-picker__option-head strong{flex:1 1 auto}


/* alpha.10 · selector exclusiu de matèries, desplegable cap amunt */
.landing-saber-picker__panel,
.landing-saber-picker.is-panel-below .landing-saber-picker__panel{
    top:auto!important;
    bottom:calc(100% + 10px)!important;
    left:0!important;
    width:min(420px,calc(100vw - 56px));
    transform-origin:left bottom;
}
.landing-saber-picker__option-head{display:block}
.landing-saber-picker__kind{display:none!important}
@media(max-width:680px){
    .landing-saber-picker__panel,
    .landing-saber-picker.is-panel-below .landing-saber-picker__panel{
        width:calc(100vw - 28px);
        max-width:none;
        top:auto!important;
        bottom:calc(100% + 10px)!important;
    }
}


/* alpha.12 · targeta de matèria restaurada */
.knowledge-card[data-card-mode="subject"]{border-color:rgba(121,186,255,.28)}