/* =====================================================================
   sc2.2 - Saltbyggeren
   Stilark. Samme udtryk som de andre superanimationer.
   BEMAERK: decimaltal skrives med PUNKTUM i CSS (0.25rem) - aldrig med
   dansk komma. Dansk komma bruges kun i tekst, som brugeren laeser.
   ===================================================================== */

:root {
    --bund:        #1b1b21;
    --scene-bund:  #14141a;
    --panel:       #2b2b36;
    --panel-2:     #333340;
    --panel-3:     #3d3d4b;
    --linje:       #464655;
    --tekst:       #f2f3f5;
    --tekst-svag:  #a9b0ba;
    --tekst-mat:   #7e8590;

    --blaa:        #3d9ee0;
    --blaa-mork:   #2a76ac;
    --orange:      #e6892a;
    --orange-mork: #b96613;
    --groen:       #3fae72;
    --groen-mork:  #2b7d51;
    --roed:        #e05446;
    --roed-mork:   #a33529;
    --gul:         #f2c53d;
    --lilla:       #9b6bd6;

    /* Positiv og negativ - samme farver som i laerredet. */
    --plus-lys:    #f39a8f;
    --minus-lys:   #8fcaf0;

    --radius:      10px;
    --radius-lil:  6px;
    --skygge:      0 4px 14px rgba(0, 0, 0, 0.35);
    --panel-bredde: 360px;
}

* { box-sizing: border-box; }

[hidden] { display: none !important; }

html, body { margin: 0; padding: 0; height: 100%; }

body {
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bund);
    color: var(--tekst);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    -webkit-font-smoothing: antialiased;
}

/* ---------------------------------------------------------------------
   TOPLINJE
   --------------------------------------------------------------------- */
.top {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 10px 16px;
    background-color: #15151b;
    border-bottom: 1px solid #33333f;
    box-shadow: 0 3px 12px rgba(0, 0, 0, 0.4);
    z-index: 20;
    flex-shrink: 0;
}

/* I en samling i fuld skaerm staar knappen, der gendanner panelet, i hjoernet */
.samling-fuld .top { padding-left: 56px; }

.top h1 {
    margin: 0;
    font-size: 1.05rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    white-space: nowrap;
}

.top h1 .ikon { font-size: 1.1rem; margin-right: 3px; color: var(--gul); }

.faneknapper {
    display: flex;
    gap: 6px;
    flex: 1;
    min-width: 0;
    overflow-x: auto;
    scrollbar-width: none;
}

.faneknapper::-webkit-scrollbar { display: none; }

.faneknap {
    background-color: var(--panel-2);
    color: var(--tekst-svag);
    border: 1px solid transparent;
    padding: 8px 14px;
    border-radius: var(--radius-lil);
    font-family: inherit;
    font-size: 0.88rem;
    font-weight: 600;
    cursor: pointer;
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: background-color 0.18s ease, color 0.18s ease;
}

.faneknap .nr {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 19px;
    height: 19px;
    border-radius: 50%;
    background-color: var(--panel-3);
    color: var(--tekst-svag);
    font-size: 0.7rem;
    flex-shrink: 0;
}

.faneknap:hover { background-color: var(--panel-3); color: var(--tekst); }
.faneknap.aktiv { background-color: var(--blaa); color: #ffffff; }
.faneknap.aktiv .nr { background-color: rgba(255, 255, 255, 0.25); color: #ffffff; }

.ikonknap {
    background: transparent;
    border: 1px solid #4a4a58;
    color: var(--tekst-svag);
    border-radius: 4px;
    width: 30px;
    height: 28px;
    font-size: 0.9rem;
    cursor: pointer;
    flex-shrink: 0;
}

.ikonknap:hover { background-color: var(--panel-3); color: var(--tekst); }

/* ---------------------------------------------------------------------
   HOVEDLAYOUT
   --------------------------------------------------------------------- */
main { flex: 1; position: relative; min-height: 0; }

.fane {
    position: absolute;
    inset: 0;
    display: none;
    grid-template-columns: minmax(0, 1fr) var(--panel-bredde);
}

.fane.aktiv { display: grid; }

.scene {
    position: relative;
    min-width: 0;
    min-height: 0;
    background-color: var(--scene-bund);
    overflow: hidden;
}

.scene > canvas { display: block; width: 100%; height: 100%; }

/* Ingen tekstmarkering i scenen. Et traek skal flytte en ion, ikke
   markere hylden (saa slaeber browseren hele linjen med). */
.scene { -webkit-user-select: none; user-select: none; }

/* En kort note i scenen, kun naar der er noget at sige. Placeres af
   sim_bord.js lige over den nederste hylde. */
.scene-note {
    position: absolute;
    left: 50%;
    transform: translate(-50%, -100%);
    max-width: calc(100% - 40px);
    padding: 7px 14px;
    border-radius: var(--radius);
    background-color: rgba(20, 20, 26, 0.92);
    border: 1px solid #3f3f4d;
    font-size: 0.86rem;
    line-height: 1.4;
    color: #dde3ea;
    text-align: center;
    pointer-events: none;
    z-index: 4;
}

.scene-note b { color: #ffffff; }

/* ---------------------------------------------------------------------
   IONHYLDERNE - positive oeverst, negative nederst, taet paa den
   raekke paa bordet, de hoerer til.
   --------------------------------------------------------------------- */
.hylde {
    position: absolute;
    left: 0;
    right: 0;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 6px 22px;
    padding: 9px 14px;
    z-index: 3;
    pointer-events: none;
}

.hylde.top {
    top: 0;
    align-items: flex-end;
    background: linear-gradient(to bottom, rgba(224, 84, 70, 0.1), rgba(224, 84, 70, 0.02));
    border-bottom: 1px solid rgba(224, 84, 70, 0.2);
}

.hylde.bund {
    bottom: 0;
    align-items: flex-start;
    background: linear-gradient(to top, rgba(61, 158, 224, 0.1), rgba(61, 158, 224, 0.02));
    border-top: 1px solid rgba(61, 158, 224, 0.2);
}

.hylde-gruppe {
    display: flex;
    flex-direction: column;
    gap: 4px;
    pointer-events: auto;
}

/* Paa den nederste hylde staar etiketten under ionerne, saa ionerne
   ligger taettest paa bordet i begge hylder. */
.hylde.bund .hylde-gruppe { flex-direction: column-reverse; }

.hylde-mrk {
    font-size: 0.63rem;
    font-weight: 700;
    letter-spacing: 0.09em;
    text-transform: uppercase;
    padding-left: 2px;
}

.hylde.top .hylde-mrk { color: #c98a82; }
.hylde.bund .hylde-mrk { color: #7eaed0; }

.chips { display: flex; flex-wrap: wrap; gap: 5px; }

.chip {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-width: 50px;
    padding: 5px 9px 4px;
    border-radius: var(--radius-lil);
    background-color: var(--panel-2);
    color: var(--tekst);
    border: 1px solid #4a4a58;
    font-family: inherit;
    line-height: 1.1;
    cursor: pointer;
    transition: background-color 0.15s ease, border-color 0.15s ease, transform 0.08s ease, opacity 0.2s ease;
}

.chip .cformel { font-size: 1.02rem; font-weight: 600; white-space: nowrap; }
.chip .cnavn { font-size: 0.6rem; color: var(--tekst-svag); margin-top: 2px; white-space: nowrap; }
.skjul-navne .chip .cnavn { display: none; }

.chip.kat { border-color: rgba(224, 84, 70, 0.5); }
.chip.an  { border-color: rgba(61, 158, 224, 0.5); }
/* En sammensat ion er en gruppe atomer - stiplet kant. */
.chip.sammensat { border-style: dashed; }

.chip:hover:not(:disabled) { transform: translateY(-1px); background-color: var(--panel-3); }
.chip.kat:hover:not(:disabled) { border-color: var(--roed); }
.chip.an:hover:not(:disabled)  { border-color: var(--blaa); }
.chip:active:not(:disabled) { transform: scale(0.95); }

.chip.valgt { border-style: solid; }
.chip.valgt.kat { background-color: rgba(224, 84, 70, 0.3); border-color: var(--roed); box-shadow: 0 0 0 1px var(--roed); }
.chip.valgt.an  { background-color: rgba(61, 158, 224, 0.3); border-color: var(--blaa); box-shadow: 0 0 0 1px var(--blaa); }

.chip:disabled { cursor: default; opacity: 0.4; }
.chip.valgt:disabled { opacity: 1; }

/* Minus, antal og plus ud for hver raekke paa bordet. */
.styr {
    position: absolute;
    display: flex;
    align-items: center;
    gap: 6px;
    transform: translateY(-50%);
    z-index: 2;
}

.styr .talknap { width: 30px; }

.styr-antal {
    min-width: 42px;
    text-align: center;
    font-family: "Cascadia Mono", Consolas, monospace;
    font-size: 1rem;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
}

.styr.kat .styr-antal { color: var(--plus-lys); }
.styr.an .styr-antal  { color: var(--minus-lys); }
.styr.kat .talknap.plus { background-color: var(--roed-mork); border-color: var(--roed); }
.styr.kat .talknap.plus:hover:not(:disabled) { background-color: var(--roed); }
/* Fane 3: knapperne styrer ladningen paa den ukendte ion (gul som "?"). */
.styr.ladning .styr-antal { color: var(--gul); font-family: "Segoe UI", sans-serif; font-size: 1.05rem; }

/* Fane 3: saltets formel over bordet. */
.ukendt-formel {
    position: absolute;
    left: 0;
    right: 0;
    top: 18px;
    text-align: center;
    pointer-events: none;
    z-index: 3;
}

.ukendt-formel .uf { font-size: 2.2rem; font-weight: 600; line-height: 1.1; }
.ukendt-formel .uf .fk { color: #f7a79d; }
.ukendt-formel .uf .fa { color: #97cff5; }
.ukendt-formel .un { font-size: 0.95rem; color: var(--tekst-svag); margin-top: 3px; }
.ukendt-formel .un:empty { display: none; }

/* Plakaterne i stort format (samme som i sc2.3): det periodiske system med
   hovedgrupperne 1-8 og de sammensatte ioner. */
.overlay-boks.bred { max-width: 900px; }
.overlay-boks.smal { max-width: 420px; }

.pt-gitter {
    display: grid;
    grid-template-columns: repeat(18, minmax(0, 1fr));
    gap: 3px;
}

.pt-hoved {
    text-align: center;
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--gul);
    padding-bottom: 2px;
}

.pt-overgang {
    align-self: end;
    text-align: center;
    font-size: 0.78rem;
    color: var(--tekst-mat);
    border-bottom: 1px solid #4a4a58;
    padding-bottom: 3px;
    margin-bottom: 2px;
}

.pt-celle {
    position: relative;
    aspect-ratio: 1;
    min-width: 0;
    border: 1px solid rgba(0, 0, 0, 0.35);
    border-radius: 4px;
    font-family: inherit;
    font-size: 0.95rem;
    font-weight: 700;
    color: #1f232b;
    cursor: pointer;
    padding: 0;
}

.pt-celle.m { background-color: #9fb8d8; }
.pt-celle.i { background-color: #9fd8a9; }
.pt-celle.h { background-color: #d8d39f; }
.pt-celle.a { background-color: #c7a9dd; }
.pt-celle.ovg { filter: saturate(0.55) brightness(0.88); }
.pt-celle:hover, .pt-celle:focus-visible { outline: 2px solid var(--tekst); outline-offset: 1px; z-index: 1; }
.pt-celle.fremhaev { background-color: var(--gul); filter: none; outline: 2px solid #ffffff; z-index: 1; }

.pt-celle.flere::after {
    content: "";
    position: absolute;
    top: 3px;
    right: 3px;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: #b8402f;
}

.pt-info { margin: 12px 0 0 !important; min-height: 1.4em; font-size: 0.95rem !important; color: #dde3ea !important; }
.pt-info b { color: var(--gul); font-size: 1.05rem; }

.pnoegle { display: flex; flex-wrap: wrap; gap: 6px 14px; margin-top: 10px; font-size: 0.8rem; color: var(--tekst-svag); }
.pnoegle span { display: inline-flex; align-items: center; gap: 6px; }
.pnoegle span::before { content: ""; width: 13px; height: 13px; border-radius: 3px; }
.pnoegle .m::before { background-color: #9fb8d8; }
.pnoegle .i::before { background-color: #9fd8a9; }
.pnoegle .h::before { background-color: #d8d39f; }
.pnoegle .a::before { background-color: #c7a9dd; }
.pnoegle .flere::before { width: 7px; height: 7px; border-radius: 50%; background-color: #b8402f; }

.ion-tabel { display: flex; flex-direction: column; gap: 5px; }

.ionraekke {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 12px;
    background-color: rgba(255, 255, 255, 0.05);
    border: 1px solid transparent;
    border-radius: var(--radius-lil);
    padding: 7px 12px;
}

.ionraekke.fremhaev { border-color: var(--gul); background-color: rgba(242, 197, 61, 0.14); }
.ion-f { font-size: 1.15rem; font-weight: 700; }
.ion-f.plus { color: var(--plus-lys); }
.ion-f.minus { color: var(--minus-lys); }
.ion-n { font-size: 0.95rem; color: #dde3ea; }

/* Et lille link i hintet, der aabner plakaten igen. */
.linkknap {
    padding: 0;
    border: none;
    background: none;
    font: inherit;
    color: var(--gul);
    text-decoration: underline;
    cursor: pointer;
}

/* Fane 3: et loest trin viser svaret ude til hoejre og en kort
   forklaring under sig, saa beskeden forneden kun handler om det trin,
   man er i gang med. */
.trin-punkt { flex-wrap: wrap; }
.trin-svar { margin-left: auto; font-weight: 700; color: #7ee0a8; white-space: nowrap; }
.trin-forkl {
    flex-basis: 100%;
    padding: 2px 0 2px 29px;
    font-size: 0.8rem;
    line-height: 1.45;
    color: #9fd9b8;
}

/* Usynlige felter oven paa laerredet, som rundvisningen peger paa */
.anker { position: absolute; pointer-events: none; }

/* Knappen, der sender Kemichael ud under praesentationen. Den staar i
   hjoernet over hans taleboble; js/laerer.js saetter top og right. */
.spring-over {
    position: absolute;
    top: 16px;
    right: 10px;
    z-index: 6;
    display: flex;
    align-items: center;
    gap: 8px;
    background-color: rgba(20, 20, 28, 0.94);
    color: #ffffff;
    border: 2px solid var(--gul);
    border-radius: 999px;
    padding: 6px 14px;
    font-family: inherit;
    font-size: 0.9rem;
    font-weight: 700;
    white-space: nowrap;
    cursor: pointer;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.5);
}

.spring-over:hover { background-color: var(--panel-3); }
.spring-over span { color: var(--gul); font-size: 1rem; }

/* Foerste klik paa Kemichael: knappen blinker og viser vejen */
@keyframes puf {
    0%   { box-shadow: 0 0 0 0 rgba(242, 197, 61, 0.9); transform: scale(1); }
    40%  { transform: scale(1.08); }
    100% { box-shadow: 0 0 0 18px rgba(242, 197, 61, 0); transform: scale(1); }
}

.spring-over.puf { animation: puf 0.7s ease-out 2; }

/* Den gule ramme om det, Kemichael taler om (NK.Fremhaev i js/laerer.js).
   Den ligger oven paa siden og fanger ingen klik. */
.fremhaev-ramme {
    position: fixed;
    z-index: 7;
    pointer-events: none;
    border: 3px solid var(--gul);
    border-radius: 12px;
    animation: fremhaev 1.3s ease-out infinite;
}

@keyframes fremhaev {
    0%   { box-shadow: 0 0 0 0 rgba(242, 197, 61, 0.55); }
    70%  { box-shadow: 0 0 0 10px rgba(242, 197, 61, 0); }
    100% { box-shadow: 0 0 0 0 rgba(242, 197, 61, 0); }
}

/* ---------------------------------------------------------------------
   HOEJRE SPALTE
   --------------------------------------------------------------------- */
.panel {
    background-color: var(--panel);
    border-left: 1px solid #1f1f27;
    padding: 12px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    overflow-y: auto;
    min-width: 0;
    scrollbar-width: thin;
    scrollbar-color: #4d4d5c var(--panel);
}

.panel::-webkit-scrollbar { width: 9px; }
.panel::-webkit-scrollbar-track { background: var(--panel); }
.panel::-webkit-scrollbar-thumb { background: #4d4d5c; border-radius: 5px; }

.kort {
    background-color: rgba(0, 0, 0, 0.22);
    border: 1px solid #3a3a47;
    border-radius: var(--radius);
    padding: 11px;
}

.kort > h2 {
    margin: 0 0 8px 0;
    font-size: 0.74rem;
    font-weight: 700;
    letter-spacing: 0.09em;
    text-transform: uppercase;
    color: var(--gul);
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 8px;
}

.kort.opgavekort { border-left: 3px solid var(--lilla); }

.kort > h2 .hoved-hoejre { display: flex; align-items: baseline; gap: 10px; }

/* Afslut: tilbage til sandkassen. */
.afslut {
    background: transparent;
    border: 1px solid #4a4a58;
    border-radius: 4px;
    color: var(--tekst-svag);
    font-family: inherit;
    font-size: 0.68rem;
    font-weight: 600;
    letter-spacing: 0.03em;
    text-transform: none;
    padding: 2px 7px;
    cursor: pointer;
}

.afslut:hover { color: var(--tekst); border-color: #5e5e70; }

.opgavetekst { margin: 0 0 10px; font-size: 0.86rem; line-height: 1.45; color: #c8ced6; }

.kort > h2 .taeller {
    font-size: 0.68rem;
    letter-spacing: 0.04em;
    text-transform: none;
    color: var(--tekst-mat);
    white-space: nowrap;
}

.kort > h2 .taeller b { color: var(--tekst); }

.note { margin: 8px 0 0 0; font-size: 0.76rem; line-height: 1.45; color: var(--tekst-mat); }
.note:empty { display: none; }

.besked { margin: 0 0 9px; font-size: 0.84rem; line-height: 1.5; color: #c8ced6; }
.besked:empty { display: none; }
.besked.god   { color: #7ee0a8; }
.besked.skidt { color: #f0918a; }
.besked.gul   { color: #f0d77a; }
.besked.hint  { color: #f0d77a; }
.besked b { color: inherit; }
#vand-note { margin: 9px 0 0; }

/* ----- Opgaverne ------------------------------------------------------ */
.opgave-prompt {
    font-size: 1.5rem;
    font-weight: 600;
    line-height: 1.2;
    margin: 2px 0 10px;
    word-break: break-word;
}

.opgave-spm { margin: 0 0 8px; font-size: 0.86rem; line-height: 1.45; color: #c8ced6; }
.opgave-spm:empty { display: none; }
.lign-v { font-size: 1.3rem; font-weight: 600; color: var(--tekst); white-space: nowrap; }

.trin { list-style: none; margin: 0 0 9px; padding: 0; counter-reset: trin; }

.trin-punkt {
    counter-increment: trin;
    display: flex;
    align-items: center;
    gap: 9px;
    padding: 5px 8px;
    border-radius: var(--radius-lil);
    font-size: 0.83rem;
    color: var(--tekst-mat);
    transition: background-color 0.2s ease, color 0.2s ease;
}

.trin-punkt + .trin-punkt { margin-top: 3px; }

.trin-punkt::before {
    content: counter(trin);
    flex-shrink: 0;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.7rem;
    font-weight: 700;
    background-color: var(--panel-3);
    color: var(--tekst-svag);
}

.trin-punkt.aktiv { color: var(--tekst); background-color: rgba(255, 255, 255, 0.05); }
.trin-punkt.aktiv::before { background-color: var(--lilla); color: #ffffff; }
.trin-punkt.ok { color: #7ee0a8; }
.trin-punkt.ok::before { content: "✓"; background-color: var(--groen-mork); color: #ffffff; }
.trin-punkt.fejl { color: #f0918a; background-color: rgba(224, 84, 70, 0.08); }
.trin-punkt.fejl::before { content: "!"; background-color: var(--roed-mork); color: #ffffff; }

.valg {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 6px;
    margin: 2px 0 9px;
}

.valg.en-spalte { grid-template-columns: minmax(0, 1fr); }

.valgknap {
    background-color: var(--panel-2);
    color: var(--tekst);
    border: 1px solid #4a4a58;
    border-radius: var(--radius-lil);
    padding: 10px 8px;
    font-family: inherit;
    font-size: 1.08rem;
    font-weight: 600;
    line-height: 1.25;
    text-align: center;
    word-break: break-word;
    cursor: pointer;
    transition: background-color 0.14s ease, border-color 0.14s ease, transform 0.08s ease;
}

.valg.navne .valgknap { font-size: 0.86rem; }
.valg.en-spalte .valgknap { font-size: 0.92rem; text-align: left; padding: 9px 11px; }

.valgknap:hover:not(:disabled) { background-color: var(--panel-3); border-color: #5e5e70; }
.valgknap:active:not(:disabled) { transform: scale(0.98); }
.valgknap:disabled { cursor: default; opacity: 0.45; }
.valgknap.rigtig { background-color: var(--groen-mork); border-color: var(--groen); color: #ffffff; opacity: 1; }
.valgknap.forkert { background-color: var(--roed-mork); border-color: var(--roed); color: #ffffff; opacity: 0.75; }

/* ---------------------------------------------------------------------
   FELTER, VAELGERE OG KNAPPER
   --------------------------------------------------------------------- */
.vaelger {
    width: 100%;
    background-color: #1a1a22;
    color: var(--tekst);
    border: 1px solid #464655;
    border-radius: var(--radius-lil);
    padding: 7px 8px;
    font-family: inherit;
    font-size: 0.85rem;
    cursor: pointer;
}

.vaelger:hover { border-color: #5e5e70; }
.vaelger option { background-color: #1a1a22; color: var(--tekst); }

.tjek {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.8rem;
    color: #c8ced6;
    cursor: pointer;
    margin-top: 10px;
    line-height: 1.35;
}

.tjek input { accent-color: var(--blaa); width: 15px; height: 15px; cursor: pointer; flex-shrink: 0; }

.talknap {
    background-color: var(--panel-2);
    color: var(--tekst);
    border: 1px solid #4a4a58;
    border-radius: var(--radius-lil);
    height: 30px;
    font-family: inherit;
    font-size: 1.1rem;
    font-weight: 700;
    line-height: 1;
    cursor: pointer;
    transition: background-color 0.14s ease, transform 0.08s ease;
}

.talknap:hover:not(:disabled) { background-color: var(--panel-3); }
.talknap:active:not(:disabled) { transform: scale(0.92); }
.talknap:disabled { opacity: 0.28; cursor: not-allowed; }
.talknap.plus { background-color: var(--blaa-mork); border-color: var(--blaa); }
.talknap.plus:hover:not(:disabled) { background-color: var(--blaa); }

.knapper { display: flex; flex-direction: column; gap: 7px; }

.knap {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    background-color: var(--panel-2);
    color: var(--tekst);
    border: 1px solid #4a4a58;
    border-radius: var(--radius-lil);
    padding: 8px 11px;
    font-family: inherit;
    font-size: 0.84rem;
    font-weight: 600;
    text-align: left;
    cursor: pointer;
    transition: background-color 0.15s ease, border-color 0.15s ease, transform 0.08s ease;
}

.knap:hover:not(:disabled) { background-color: var(--panel-3); border-color: #5e5e70; }
.knap:active:not(:disabled) { transform: scale(0.985); }
.knap:disabled { opacity: 0.4; cursor: not-allowed; }

.knap .tegn { font-size: 1rem; flex-shrink: 0; }
.knap.stor { padding: 11px 13px; font-size: 0.9rem; width: 100%; }

.knap.blaa { background-color: var(--blaa-mork); border-color: var(--blaa); }
.knap.blaa:hover:not(:disabled) { background-color: var(--blaa); }
.knap.groen { background-color: var(--groen-mork); border-color: var(--groen); }
.knap.groen:hover:not(:disabled) { background-color: var(--groen); }

.knap.lille { padding: 6px 11px; font-size: 0.8rem; flex-shrink: 0; }

.bundlinje { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.bundlinje .tjek { margin-top: 0; }

.vaelger + .vaelger { margin-top: 6px; }
#vand-haeld { margin-top: 9px; }

/* Den knap, der er det naturlige naeste skridt, banker stille. */
@keyframes bank {
    0%   { box-shadow: 0 0 0 0 rgba(61, 158, 224, 0.6); }
    70%  { box-shadow: 0 0 0 11px rgba(61, 158, 224, 0); }
    100% { box-shadow: 0 0 0 0 rgba(61, 158, 224, 0); }
}

.knap.banker { animation: bank 1.7s ease-out infinite; }
.opgavekort .knap.stor { justify-content: center; }

.teoriknap {
    background-color: var(--panel-2);
    color: var(--tekst-svag);
    border: 1px solid #4a4a58;
    border-radius: var(--radius-lil);
    padding: 7px 14px;
    font-family: inherit;
    font-size: 0.86rem;
    font-weight: 600;
    cursor: pointer;
    flex-shrink: 0;
}

.teoriknap:hover { background-color: var(--panel-3); color: var(--tekst); }

/* ---------------------------------------------------------------------
   TEORIEN
   --------------------------------------------------------------------- */
.overlay {
    position: fixed;
    inset: 0;
    background-color: rgba(8, 8, 12, 0.78);
    display: none;
    align-items: center;
    justify-content: center;
    padding: 24px;
    z-index: 50;
}

.overlay.vis { display: flex; }

.overlay-boks {
    background-color: var(--panel);
    border: 1px solid var(--linje);
    border-radius: 14px;
    box-shadow: var(--skygge);
    max-width: 640px;
    width: 100%;
    max-height: 100%;
    overflow-y: auto;
    padding: 24px 26px;
}

.overlay-boks h2 { margin: 0 0 6px 0; font-size: 1.15rem; color: var(--blaa); }

.overlay-boks h3 {
    margin: 18px 0 6px 0;
    font-size: 0.78rem;
    letter-spacing: 0.09em;
    text-transform: uppercase;
    color: var(--gul);
}

.overlay-boks p, .overlay-boks li {
    font-size: 0.9rem;
    line-height: 1.55;
    color: #c8ced6;
    margin: 0 0 8px 0;
}

.overlay-boks ul { margin: 0; padding-left: 20px; }

.ligning {
    background-color: #111117;
    border: 1px solid #3f3f4d;
    border-radius: var(--radius-lil);
    color: #7ee0a8;
    text-align: center;
    padding: 9px 6px;
    margin: 4px 0 10px;
    font-size: 1.05rem;
    font-weight: 600;
}

kbd {
    background-color: #14141a;
    border: 1px solid #4a4a58;
    border-bottom-width: 2px;
    border-radius: 4px;
    padding: 1px 6px;
    font-family: "Cascadia Mono", Consolas, monospace;
    font-size: 0.8rem;
    color: var(--tekst);
}

/* ---------------------------------------------------------------------
   RUNDVISNINGEN (samme som sc1.1 og sc2.4)
   --------------------------------------------------------------------- */
.rundvisning { position: fixed; inset: 0; z-index: 200; }
.rundvisning[hidden] { display: none; }

.rundvisning-baggrund {
    position: fixed;
    inset: 0;
    background: transparent;
    cursor: pointer;
}

.rundvisning-spot {
    position: fixed;
    border-radius: 10px;
    box-shadow: 0 0 0 9999px rgba(8, 8, 13, 0.74);
    outline: 2px solid var(--gul);
    outline-offset: 3px;
    pointer-events: none;
    transition: top 0.22s ease, left 0.22s ease, width 0.22s ease, height 0.22s ease;
}

.rundvisning-boks {
    position: fixed;
    width: 300px;
    max-width: calc(100vw - 28px);
    background-color: var(--panel);
    border: 1px solid var(--linje);
    border-radius: var(--radius);
    box-shadow: var(--skygge);
    padding: 14px 16px;
    transition: top 0.22s ease, left 0.22s ease;
}

.rundvisning-hoved {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 6px;
}

.rundvisning-tal {
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.07em;
    color: var(--tekst-mat);
}

.rundvisning-luk {
    background: transparent;
    border: none;
    color: var(--tekst-svag);
    font-size: 0.9rem;
    line-height: 1;
    cursor: pointer;
    padding: 2px 4px;
}

.rundvisning-luk:hover { color: var(--tekst); }
.rundvisning-boks h3 { margin: 0 0 6px 0; font-size: 1rem; color: var(--gul); }
.rundvisning-boks p { margin: 0; font-size: 0.86rem; line-height: 1.5; color: #c8ced6; }

.rundvisning-knapper {
    display: flex;
    justify-content: space-between;
    gap: 8px;
    margin-top: 14px;
}

.rundvisning-knapper .knap { flex: 1; justify-content: center; }

/* ---------------------------------------------------------------------
   TILGAENGELIGHED OG SMALLE SKAERME
   --------------------------------------------------------------------- */
button:focus-visible,
input:focus-visible,
select:focus-visible {
    outline: 2px solid var(--gul);
    outline-offset: 2px;
}

@media (max-width: 1320px) {
    :root { --panel-bredde: 330px; }
    .top h1 .lang { display: none; }
}

@media (max-width: 1100px) {
    .top { gap: 10px; padding: 8px 12px; }
    .faneknap { padding: 7px 10px; font-size: 0.8rem; gap: 6px; }
    .faneknap .nr { width: 17px; height: 17px; font-size: 0.65rem; }
    .chip { min-width: 44px; padding: 4px 7px 3px; }
    .chip .cformel { font-size: 0.94rem; }
    .hylde { gap: 5px 14px; padding: 7px 10px; }
}

@media (max-width: 700px) {
    .styr { gap: 4px; }
    .styr .talknap { width: 26px; }
    .styr-antal { min-width: 28px; font-size: 0.9rem; }
}

@media (max-width: 860px) {
    body { overflow: auto; }
    .top { flex-wrap: wrap; gap: 10px; }
    .faneknapper { order: 3; width: 100%; flex: none; }
    main { overflow: visible; }
    .fane { position: static; grid-template-columns: minmax(0, 1fr); }
    .fane.aktiv { display: grid; }
    .scene { height: 70vh; min-height: 460px; }
    .panel { border-left: none; border-top: 1px solid #1f1f27; }
}

@media (prefers-reduced-motion: reduce) {
    * { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; }
}

/* ---------------------------------------------------------------------
   TRAEK OG SLIP
   touch-action: none, saa en finger paa en tablet traekker ionen i
   stedet for at rulle siden.
   --------------------------------------------------------------------- */
.chip, .scene > canvas { touch-action: none; }
.chip { cursor: grab; }
.chip:active:not(:disabled) { cursor: grabbing; }
.traekker .chip { cursor: grabbing; }
#vand-laerred { touch-action: manipulation; }

/* Tilbuddet om Kemichaels praesentation: nederst i hoejre hjoerne af
   scenen, hvor han selv kommer til at staa (js/praesentation.js). Paa
   fane 1 flytter js/laerer.js det op over den nederste hylde. */
.tilbud {
    position: absolute;
    right: 12px;
    bottom: 12px;
    z-index: 6;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
    background-color: rgba(20, 20, 28, 0.94);
    border: 1px solid #4a4a58;
    border-radius: 14px;
    padding: 7px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.5);
    white-space: nowrap;
}

.tilbud button {
    font-family: inherit;
    font-weight: 700;
    border-radius: 999px;
    cursor: pointer;
    padding: 7px 16px;
    font-size: 0.92rem;
}

.tilbud-start {
    background-color: var(--blaa-mork);
    border: 2px solid var(--gul);
    color: #ffffff;
    animation: bank 1.7s ease-out infinite;
}

.tilbud-start span { color: var(--gul); margin-left: 4px; }
.tilbud-start:hover { background-color: var(--blaa); }

.tilbud-nej {
    background-color: transparent;
    border: 1px solid #5e5e70;
    color: var(--tekst-svag);
}

.tilbud-nej:hover { background-color: var(--panel-3); color: var(--tekst); }