/* =====================================================================
   sc7.3 - pH-beregninger
   Stilark. Samme udtryk som de andre superanimationer (grundlaget er sc7.2 og sc4.4).
   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;
    --groen:       #3fae72;
    --groen-mork:  #2b7d51;
    --roed:        #e05446;
    --roed-mork:   #a33529;
    --gul:         #f2c53d;
    --lilla:       #9b6bd6;

    --plus-lys:    #f7a79d;
    --minus-lys:   #97cff5;

    --radius:      10px;
    --radius-lil:  6px;
    --skygge:      0 4px 14px rgba(0, 0, 0, 0.35);
    --panel-bredde: 430px;
}

* { 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%; }
.scene.medtekst { padding-bottom: 50px; }

.scene-mrk {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    min-height: 50px;
    display: block;
    padding: 15px 20px 10px;
    background: linear-gradient(to top, rgba(8, 8, 13, 0.97) 60%, rgba(8, 8, 13, 0.6));
    font-size: 0.9rem;
    line-height: 1.45;
    color: #dde3ea;
    text-align: center;
    pointer-events: none;
    z-index: 4;
}

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

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

/* Den store knap, der sender Kemichael ud under praesentationen. Midt
   foroven i scenen, saa den ikke kan overses. */
.spring-over {
    position: absolute;
    top: 16px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 6;
    display: flex;
    align-items: center;
    gap: 10px;
    background-color: rgba(20, 20, 28, 0.94);
    color: #ffffff;
    border: 2px solid var(--gul);
    border-radius: 999px;
    padding: 11px 22px;
    font-family: inherit;
    font-size: 1rem;
    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: 1.1rem; }

/* 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: translateX(-50%) scale(1); }
    40%  { transform: translateX(-50%) scale(1.08); }
    100% { box-shadow: 0 0 0 18px rgba(242, 197, 61, 0); transform: translateX(-50%) scale(1); }
}

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

/* Feltet, Kemichael peger paa, mens han siger, hvor svarene skrives */
@keyframes peg {
    0%   { box-shadow: 0 0 0 0 rgba(242, 197, 61, 0.7); }
    70%  { box-shadow: 0 0 0 10px rgba(242, 197, 61, 0); }
    100% { box-shadow: 0 0 0 0 rgba(242, 197, 61, 0); }
}

.felt.peg { border-color: var(--gul); animation: peg 1.2s ease-out infinite; }

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

.kort > h2 .taeller {
    font-size: 0.72rem;
    letter-spacing: 0.04em;
    text-transform: none;
    color: var(--tekst-mat);
    white-space: nowrap;
}

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

.hyldeprik {
    display: inline-block;
    width: 9px;
    height: 9px;
    border-radius: 50%;
    margin-right: 7px;
    vertical-align: 0;
}

.note { margin: 8px 0 0 0; font-size: 0.8rem; line-height: 1.45; color: var(--tekst-svag); }
.note:empty { display: none; }

.besked { margin: 0; font-size: 0.86rem; line-height: 1.5; color: #c8ced6; }
.besked:empty { display: none; }
.besked.god   { color: #7ee0a8; }
.besked.skidt { color: #f0918a; }
.besked.gul   { color: #f0d77a; }
.besked b { color: inherit; }

/* ----- Talraekker ---------------------------------------------------- */
.talraekke {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 10px;
    background-color: rgba(255, 255, 255, 0.045);
    border-radius: var(--radius-lil);
    padding: 6px 10px;
    font-size: 0.86rem;
    color: #c8ced6;
}

.talraekke + .talraekke { margin-top: 5px; }

.talraekke .tal {
    font-weight: 700;
    color: var(--tekst);
    font-variant-numeric: tabular-nums;
    white-space: nowrap;
}

.tal.gul  { color: var(--gul); }
.tal.roed { color: var(--plus-lys); letter-spacing: 0.08em; }

.storttal {
    font-size: 2.3rem;
    font-weight: 700;
    line-height: 1.1;
    color: var(--gul);
    font-variant-numeric: tabular-nums;
    margin: 0 0 8px;
}

/* ---------------------------------------------------------------------
   OPGAVEKORTET: raekker med felter
   --------------------------------------------------------------------- */
.opgave-prompt {
    font-size: 1.55rem;
    font-weight: 600;
    line-height: 1.2;
    margin: 2px 0 4px;
    word-break: break-word;
}

.opgave-spm { margin: 0 0 4px; font-size: 0.86rem; line-height: 1.45; color: var(--tekst-svag); }

.raekker { display: flex; flex-direction: column; gap: 9px; margin: 8px 0 10px; }

.raekke-hoved {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 8px;
    margin-bottom: 4px;
}

.raekke-etiket {
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.07em;
    text-transform: uppercase;
    color: var(--tekst-mat);
}

.raekke-del { font-size: 0.95rem; font-weight: 600; color: var(--tekst); }

.raekke.slut { padding-top: 8px; border-top: 1px dashed #464655; }

.felter { display: flex; gap: 6px; }

.felt {
    flex: 1;
    display: flex;
    align-items: stretch;
    min-width: 0;
    min-height: 40px;
    background-color: #1a1a22;
    border: 1px solid #4a4a58;
    border-radius: var(--radius-lil);
    overflow: hidden;
    transition: border-color 0.15s ease, background-color 0.15s ease;
}

.felt input {
    flex: 1;
    min-width: 0;
    background: transparent;
    border: none;
    color: var(--tekst);
    font-family: inherit;
    font-size: 1.02rem;
    font-weight: 600;
    padding: 8px 10px;
    outline: none;
}

.felt input::placeholder { color: #6a707b; font-weight: 400; }

.felt-ok {
    background-color: var(--blaa-mork);
    color: #ffffff;
    border: none;
    padding: 0 12px;
    font-family: inherit;
    font-size: 1rem;
    cursor: pointer;
}

.felt-ok:hover:not(:disabled) { background-color: var(--blaa); }

.felt.aktiv { border-color: var(--blaa); }
.felt.aktiv:focus-within { border-color: var(--gul); box-shadow: 0 0 0 1px var(--gul); }
.felt.laast { opacity: 0.4; }
.felt.laast .felt-ok { background-color: var(--panel-3); cursor: default; }

.felt.ok { border-color: rgba(63, 174, 114, 0.6); background-color: rgba(63, 174, 114, 0.13); }
.felt.svar { border-color: rgba(242, 197, 61, 0.55); background-color: rgba(242, 197, 61, 0.1); }

.felt-svar {
    flex: 1;
    min-width: 0;
    padding: 8px 10px;
    font-size: 1.02rem;
    font-weight: 600;
    color: #b8f0cf;
    overflow-wrap: anywhere;
    align-self: center;
}

.felt.svar .felt-svar { color: #f5dd8a; }
.felt-maerke { padding: 0 10px; align-self: center; font-weight: 700; color: #7ee0a8; }
.felt.svar .felt-maerke { color: var(--gul); }

@keyframes ryst {
    0%, 100% { transform: translateX(0); }
    20% { transform: translateX(-5px); }
    40% { transform: translateX(5px); }
    60% { transform: translateX(-3px); }
    80% { transform: translateX(3px); }
}

.felt.ryst { animation: ryst 0.35s ease 1; border-color: var(--roed); }

@keyframes glimt {
    0%   { box-shadow: 0 0 0 0 rgba(63, 174, 114, 0.55); }
    70%  { box-shadow: 0 0 0 12px rgba(63, 174, 114, 0); }
    100% { box-shadow: 0 0 0 0 rgba(63, 174, 114, 0); }
}

.opgavekort .besked { margin-top: 2px; }
.opgavekort.sejr { border-left-color: var(--groen); animation: glimt 0.9s ease-out 2; }

/* ----- Hylderne i panelet --------------------------------------------- */
.hyldeliste { display: flex; flex-direction: column; gap: 5px; }

.hyldelinje {
    display: flex;
    align-items: center;
    gap: 9px;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.045);
    border: 1px solid transparent;
    border-radius: var(--radius-lil);
    padding: 7px 10px;
    font-family: inherit;
    color: var(--tekst);
    text-align: left;
    cursor: pointer;
    transition: background-color 0.15s ease, border-color 0.15s ease;
}

.hyldelinje:hover { background-color: var(--panel-3); border-color: #5e5e70; }
.hl-farve { width: 4px; align-self: stretch; border-radius: 2px; flex-shrink: 0; }
.hl-navn { flex: 1; font-size: 0.88rem; font-weight: 600; }
.hl-navn em { display: block; font-style: normal; font-weight: 400; font-size: 0.76rem; color: var(--tekst-mat); }
.hl-tal { font-size: 0.88rem; font-weight: 700; font-variant-numeric: tabular-nums; }
.hl-stjerner { min-width: 34px; text-align: right; font-size: 0.82rem; font-weight: 700; color: var(--gul); }

/* ---------------------------------------------------------------------
   KNAPPER
   --------------------------------------------------------------------- */
.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: 0.86rem;
    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: 0.92rem; width: 100%; }

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

.knap.nulstil {
    background-color: transparent;
    border-color: #5b3b39;
    color: #e08b81;
    margin-top: 10px;
    width: 100%;
}

.knap.nulstil:hover:not(:disabled) { background-color: rgba(224, 84, 70, 0.16); border-color: var(--roed); }

.knaprad { display: flex; gap: 6px; margin-top: 9px; }
.knaprad.taet { margin-top: 0; }
.knaprad .knap { flex: 1; justify-content: center; padding: 8px 6px; }

/* 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; }


/* ---------------------------------------------------------------------
   OVERLAYS: 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: 620px;
    width: 100%;
    max-height: 100%;
    overflow-y: auto;
    padding: 22px 24px;
}

.overlay-boks.bred { max-width: 900px; }
.overlay-boks.smal { max-width: 420px; }

.overlay-boks h2 { margin: 0 0 12px 0; font-size: 1.15rem; color: var(--blaa); }

/* ---------------------------------------------------------------------
   RUNDVISNINGEN (samme som i sc1.1)
   --------------------------------------------------------------------- */
.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: 0.72rem;
    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: 0.87rem; 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,
select:focus-visible {
    outline: 2px solid var(--gul);
    outline-offset: 2px;
}

@media (max-width: 1320px) {
    :root { --panel-bredde: 370px; }
}

@media (max-width: 1100px) {
    .top { gap: 10px; padding: 8px 12px; }
    .faneknap { padding: 7px 10px; font-size: 0.82rem; gap: 6px; }
    .faneknap .nr { width: 17px; height: 17px; font-size: 0.65rem; }
}

@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: 66vh; min-height: 440px; }
    .panel { border-left: none; border-top: 1px solid #1f1f27; }
}

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

/* ---------------------------------------------------------------------
   FAELLES MED SC4.2 OG SC4.4: maalet, beregningerne og felterne
   --------------------------------------------------------------------- */

.ikonknap.tekstknap { width: auto; padding: 0 10px; font-family: inherit; font-size: 0.82rem; font-weight: 600; }

/* Maalet paa fane 1 */
.maal-tekst {
    margin: 2px 0 6px;
    font-size: 1.15rem;
    font-weight: 600;
    line-height: 1.35;
}

/* Beregningerne under "Paa vaegten": navnet over, beregningen under */
.regn {
    display: flex;
    flex-direction: column;
    gap: 1px;
    background-color: rgba(255, 255, 255, 0.045);
    border-radius: var(--radius-lil);
    padding: 6px 10px;
    margin-bottom: 5px;
}

.regn-navn {
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.07em;
    text-transform: uppercase;
    color: var(--tekst-mat);
}

.regn-linje {
    font-size: 0.92rem;
    font-weight: 600;
    color: var(--tekst);
    font-variant-numeric: tabular-nums;
    overflow-wrap: anywhere;
}

/* Raekkerne paa fane 3: "m =" foran og enheden bagefter */
.felt-pre {
    align-self: center;
    padding: 0 2px 0 10px;
    font-size: 1.02rem;
    font-weight: 700;
    color: var(--gul);
    white-space: nowrap;
}

.felt-efter {
    align-self: center;
    padding: 0 8px 0 2px;
    font-size: 0.86rem;
    color: var(--tekst-mat);
    white-space: nowrap;
}

.felt input { min-width: 60px; }
.felt-svar { font-size: 0.95rem; }
.felt-svar b { color: #ffffff; }
.felt.svar .felt-svar b { color: #fff3c4; }

/* Teorien */
.overlay-boks p { margin: 0 0 10px; font-size: 0.95rem; line-height: 1.55; color: #dde3ea; }

.eksempel {
    margin: 4px 0 12px;
    padding: 10px 14px;
    border-left: 4px solid var(--lilla);
    border-radius: 0 var(--radius-lil) var(--radius-lil) 0;
    background-color: rgba(255, 255, 255, 0.05);
    font-size: 1rem;
    font-weight: 600;
    color: var(--tekst);
}

.eksempel-hoved {
    display: block;
    margin-bottom: 3px;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--lilla);
}


/* Tilbuddet om Kemichaels praesentation: midt foroven i scenen, samme
   sted som knappen, der springer den over (js/praesentation.js) */
.tilbud {
    position: absolute;
    top: 16px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 6;
    display: flex;
    align-items: center;
    gap: 8px;
    background-color: rgba(20, 20, 28, 0.94);
    border: 1px solid #4a4a58;
    border-radius: 999px;
    padding: 6px;
    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: 9px 18px;
    font-size: 0.98rem;
}

.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); }



/* ---------------------------------------------------------------------
   SC7.3: trinene i opgavekortet, lommeregneren og Maple
   --------------------------------------------------------------------- */

.opgavekort .maal-tekst { font-size: 1.08rem; }
.opgavekort .raekker { margin: 6px 0 8px; }

.trin-hoved {
    display: flex;
    align-items: baseline;
    gap: 8px;
    margin-bottom: 4px;
    font-size: 0.84rem;
    color: var(--tekst-svag);
}

.trin-nr {
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--gul);
    white-space: nowrap;
}

.trin-spm { font-weight: 600; }

.raekke.loest .trin-nr, .raekke.vist .trin-nr { color: var(--tekst-mat); }

/* Felterne: pH = [ ], [H3O+] = [ ] · 10^[ ] M, og skemaet med antal OH- */
.felt-konc .mant { flex: 1.3; }

.felt-mid {
    align-self: center;
    padding: 0 1px 0 4px;
    font-size: 1rem;
    font-weight: 700;
    color: var(--tekst);
    white-space: nowrap;
}

.felt input.eksp {
    flex: none;
    width: 58px;
    min-width: 0;
    align-self: flex-start;
    margin-top: 2px;
    padding: 3px 6px;
    font-size: 0.9rem;
    border: 1px dashed #5e5e70;
    border-radius: 4px;
    background-color: rgba(255, 255, 255, 0.04);
}

.felt-tal .felt-pre { font-size: 0.9rem; color: var(--tekst); font-weight: 600; }
.felt-tal .felt-efter { font-size: 0.9rem; color: var(--tekst); font-weight: 600; }

.felt input.lille {
    flex: none;
    width: 46px;
    min-width: 0;
    text-align: center;
    padding: 6px 4px;
    margin: 5px 2px;
    border: 1px dashed #5e5e70;
    border-radius: 4px;
}

.felt .felt-svar { line-height: 1.6; }
.felt-svar sup, .besked sup, .maal-tekst sup { font-size: 0.72em; line-height: 0; }
.felt-svar sub, .besked sub { font-size: 0.72em; line-height: 0; }

/* En broek: taeller over naevner */
.brok {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    vertical-align: middle;
    margin: 0 3px;
    line-height: 1.25;
}

.brok-t { border-bottom: 1.5px solid currentColor; padding: 0 3px 1px; }
.brok-n { padding: 1px 3px 0; }

/* ----- Lommeregneren ---------------------------------------------------- */
.regner-plads:empty { display: none; }

.regner { border-left: 3px solid var(--blaa); }

.r-maple {
    background-color: transparent;
    border: 1px solid #5e5e70;
    color: var(--tekst-svag);
    border-radius: 999px;
    padding: 3px 12px;
    font-family: inherit;
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.02em;
    text-transform: none;
    cursor: pointer;
}

.r-maple:hover { background-color: var(--panel-3); color: var(--tekst); }
.r-maple.til { background-color: #b3261e; border-color: #e35d52; color: #ffffff; }

.r-skaerm {
    background-color: #0e1116;
    border: 1px solid #2f3440;
    border-radius: var(--radius-lil);
    padding: 9px 11px 7px;
    min-height: 92px;
}

.r-tastet {
    font-family: Consolas, "Courier New", monospace;
    font-size: 1.12rem;
    font-weight: 700;
    color: #e9eef4;
    line-height: 1.4;
    min-height: 1.4em;
    overflow-wrap: anywhere;
    cursor: text;
}

.r-tom { color: #5f6672; font-weight: 400; font-style: italic; font-family: "Segoe UI", sans-serif; font-size: 0.9rem; }

@keyframes blink { 0%, 49% { opacity: 1; } 50%, 100% { opacity: 0; } }

.r-mark {
    display: inline-block;
    width: 2px;
    height: 1.1em;
    margin: 0 -1px;
    vertical-align: -0.15em;
    background-color: var(--gul);
    animation: blink 1s steps(1) infinite;
}

.r-laest {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 4px 8px;
    margin-top: 6px;
    padding-top: 6px;
    border-top: 1px dashed #2f3440;
    font-size: 1.12rem;
    font-weight: 600;
    color: #cfd6df;
    min-height: 2.1em;
}

.r-laest.tom { visibility: hidden; }

.r-laest-mrk {
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--tekst-mat);
}

.r-udtryk { flex: 1; min-width: 0; }
.r-udtryk sup { font-size: 0.7em; vertical-align: 0.55em; line-height: 0; }

.r-res {
    margin-left: auto;
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--gul);
    white-space: nowrap;
    font-variant-numeric: tabular-nums;
}

.r-res:empty { display: none; }
.r-lig { color: var(--tekst-svag); margin-right: 6px; font-weight: 600; }

.r-auto { opacity: 0.4; }
.r-hul { color: var(--gul); }
.r-fejl { color: #f0918a; text-decoration: underline wavy #f0918a; }
.r-ans { color: #9ccaf5; }

.r-besked { font-size: 0.84rem; color: #f0918a; margin-top: 4px; }
.r-besked:empty { display: none; }

.r-taster {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 5px;
    margin-top: 9px;
}

.r-taster button {
    height: 38px;
    background-color: #3a3a48;
    color: #ffffff;
    border: 1px solid #4d4d5c;
    border-radius: var(--radius-lil);
    font-family: inherit;
    font-size: 1.05rem;
    font-weight: 700;
    cursor: pointer;
    transition: background-color 0.1s ease, transform 0.06s ease;
    padding: 0;
}

.r-taster button:hover { background-color: #4a4a5a; }
.r-taster button:active { transform: scale(0.96); }
.r-taster button sup { font-size: 0.7em; }
.r-taster .r-op { background-color: #2f3340; color: #dde3ea; }
.r-taster .r-fn { background-color: #3b3350; color: #e2d6ff; font-size: 0.98rem; }
.r-taster .r-pil { background-color: #2f3340; color: var(--tekst-svag); font-size: 0.9rem; }
.r-taster .r-slet { background-color: #4a2c2c; color: #f4c3bd; font-size: 0.95rem; }
.r-taster .r-lig { background-color: var(--blaa-mork); border-color: var(--blaa); }
.r-taster .r-lig:hover { background-color: var(--blaa); }
.r-taster button.trykket { background-color: var(--gul); color: #1c1f26; transform: scale(0.94); }

/* Vis tasterne: lommeregneren taster selv */
.regner.demo .r-skaerm { border-color: var(--gul); }

/* Kemichael peger paa lommeregneren */
@keyframes pegR {
    0%   { box-shadow: 0 0 0 0 rgba(242, 197, 61, 0.7); }
    70%  { box-shadow: 0 0 0 12px rgba(242, 197, 61, 0); }
    100% { box-shadow: 0 0 0 0 rgba(242, 197, 61, 0); }
}

.regner.peg { border-color: var(--gul); animation: pegR 1.2s ease-out infinite; }

/* ----- Maple: roedt input og blaat resultat, som i Maple ------------------ */
.r-maplefelt, .maple-linje { display: none; }
.maple-til .r-maplefelt { display: block; }
.maple-til .maple-linje { display: flex; }

.r-maplefelt {
    margin-top: 8px;
    padding: 7px 10px 6px;
    background-color: #fbfbf8;
    border: 1px solid #c9c6ba;
    border-radius: var(--radius-lil);
}

.r-mapleind {
    font-family: Consolas, "Courier New", monospace;
    font-size: 0.98rem;
    color: #d0021b;
    overflow-wrap: anywhere;
}

.r-prompt { color: #444444; font-weight: 700; }

.r-mapleud {
    text-align: center;
    font-size: 1.05rem;
    color: #1f3fd1;
    min-height: 1.3em;
    margin-top: 2px;
    font-variant-numeric: tabular-nums;
}

.r-mapleud sup { font-size: 0.7em; }
.r-eksakt { font-style: italic; }
.r-mfejl { color: #b00020; }

.r-maplenote { font-size: 0.8rem; color: #5b5445; line-height: 1.4; }
.r-maplenote:empty { display: none; }

/* Maple-linjen under et hint eller et svar i opgavekortet */
.maple-linje {
    flex-wrap: wrap;
    align-items: center;
    gap: 3px 10px;
    margin-top: 6px;
    padding: 5px 9px;
    background-color: #fbfbf8;
    border-radius: var(--radius-lil);
    font-style: normal;
}

.m-hoved {
    font-size: 0.66rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: #8a8472;
}

.m-ind { font-family: Consolas, "Courier New", monospace; font-size: 0.9rem; color: #d0021b; overflow-wrap: anywhere; }
.m-ud { margin-left: auto; font-size: 0.95rem; color: #1f3fd1; }
.m-ud sup { font-size: 0.7em; }

.overlay-boks code {
    font-family: Consolas, "Courier New", monospace;
    color: #ff8a80;
    background-color: rgba(255, 255, 255, 0.06);
    padding: 1px 5px;
    border-radius: 4px;
}

@media (max-height: 760px) {
    .r-taster button { height: 34px; }
    .r-skaerm { min-height: 84px; }
}

.efter-hint { display: block; margin-top: 6px; }

/* Et regnet trin fylder kun én linje */
.raekke.loest .felt, .raekke.vist .felt { min-height: 0; }
.raekke.loest .felt-svar, .raekke.vist .felt-svar { padding: 5px 10px; font-size: 0.9rem; line-height: 1.5; }
.felt-svar .maple-linje { margin-top: 4px; padding: 2px 7px; }
.felt-svar .m-ind { font-size: 0.8rem; }
.felt-svar .m-ud { font-size: 0.85rem; }
.opgavekort .raekker { gap: 6px; }

/* Lommeregneren staar altid helt fremme; er der mange trin, ruller
   opgavekortet i stedet (kun naar panelet staar ved siden af scenen) */
@media (min-width: 861px) {
    .fane .panel > .opgavekort { flex: 0 1 auto; min-height: 150px; overflow-y: auto; scrollbar-width: thin; scrollbar-color: #4d4d5c transparent; }
    .fane .panel > .regner-plads { flex: none; }
}

@media (max-height: 900px) {
    .r-taster button { height: 34px; }
    .r-taster { gap: 4px; margin-top: 7px; }
    .r-skaerm { min-height: 80px; padding: 7px 10px 6px; }
    .r-maplefelt { margin-top: 6px; padding: 5px 9px 4px; }
}

/* ----- Et trin i smaa bider: 1 formlen, 2 lommeregneren, 3 svaret ------- */
.trin-skema { font-size: 0.85rem; color: var(--tekst-svag); margin: 0 0 6px; }

.bider { list-style: none; margin: 6px 0 0; padding: 0; display: flex; flex-direction: column; gap: 9px; }
.bid { display: flex; gap: 9px; align-items: flex-start; }
.bid.kommer { display: none; }

.bid-nr {
    flex: none;
    width: 22px;
    height: 22px;
    margin-top: 1px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background-color: var(--panel-3);
    color: var(--tekst-svag);
    font-size: 0.78rem;
    font-weight: 800;
}

.bid.nu .bid-nr { background-color: var(--gul); color: #1c1f26; }
.bid.klar .bid-nr { background-color: var(--groen); color: transparent; position: relative; }
.bid.klar .bid-nr::after { content: "✓"; position: absolute; color: #ffffff; font-size: 0.8rem; }

.bid-krop { flex: 1; min-width: 0; }
.bid-tekst { font-size: 0.92rem; line-height: 1.45; color: #c8ced6; }
.bid.nu .bid-tekst { color: var(--tekst); font-weight: 600; }
.bid.klar .bid-tekst, .bid.klar .formelvalg { display: none; }
.bid-klar-tekst { font-size: 0.9rem; line-height: 1.45; color: #b8f0cf; }
.bid:not(.klar) .bid-klar-tekst, .bid-klar-tekst:empty { display: none; }
.bid .felt { margin-top: 6px; }

.bid-tekst sup, .bid-tekst sub, .bid-klar-tekst sup, .bid-klar-tekst sub,
.formelknap sup, .formelknap sub, .besked sup, .besked sub { font-size: 0.72em; line-height: 0; }

.formelvalg { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 7px; }

.formelknap {
    background-color: var(--panel-2);
    color: var(--tekst);
    border: 1px solid #5e5e70;
    border-radius: var(--radius-lil);
    padding: 8px 12px;
    font-family: inherit;
    font-size: 0.98rem;
    font-weight: 700;
    cursor: pointer;
}

.formelknap:hover:not(:disabled) { background-color: var(--panel-3); border-color: var(--gul); }
.formelknap.forkert { background-color: rgba(224, 84, 70, 0.16); border-color: var(--roed); color: #f7b9b2; text-decoration: line-through; cursor: default; }
.formelknap:disabled:not(.forkert) { opacity: 0.45; cursor: default; }