/* =====================================================================
   sc3.4 - Blandbarhed
   Stilark. Grundreglerne (toplinje, panel, kort, knapper, pop op og
   rundvisning) er de samme som i sc2.4.
   BEMAERK: decimaltal skrives med PUNKTUM i CSS (0.25rem) - aldrig med
   dansk komma.
   ===================================================================== */

:root {
    --bund:        #1b1b21;
    --scene-bund:  #14141a;
    --panel:       #2b2b36;
    --panel-2:     #333340;
    --panel-3:     #3d3d4b;
    --linje:       #464655;
    --tekst:       #f2f3f5;
    --tekst-svag:  #c8ced6;
    --tekst-mat:   #9fa6af;

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

    /* Stofferne: de samme farver som kuglerne (js/data.js) */
    --vand:        #3b82f6;
    --ethanol:     #d946ef;
    --olie:        #fbbf24;

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

* { box-sizing: border-box; }

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: 12px;
    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;
    flex: 1;
}

.top h1 .ikon { font-size: 1.15rem; margin-right: 3px; color: var(--gul); }

.teoriknap {
    background-color: var(--panel-2);
    color: var(--tekst-svag);
    border: 1px solid #4a4a58;
    border-radius: var(--radius-lil);
    padding: 8px 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); }

.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); }

#hjaelpknap {
    width: 38px;
    height: 36px;
    font-size: 1.1rem;
    font-weight: 700;
    background-color: var(--roed-mork);
    border-color: var(--roed);
    color: #d9dde3;
}

#hjaelpknap:hover { background-color: var(--roed); color: #ffffff; }

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

.fane {
    position: absolute;
    inset: 0;
    display: grid;
    grid-template-columns: minmax(0, 1fr) var(--panel-bredde);
}

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

.scene > canvas { position: absolute; inset: 0; width: 100%; height: 100%; display: block; touch-action: none; }

/* Pladsholdere, som rundvisningen kan pege paa. js/scene.js saetter
   deres placering efter tegningen. */
.anker { position: absolute; pointer-events: none; }

/* Den store knap, der sender Kemichael ud under praesentationen.
   Samme som i sc2.3 og sc2.4. */
.spring-over {
    position: absolute;
    top: 14px;
    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: 10px 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[hidden] { display: none; }
.spring-over:hover { background-color: var(--panel-3); }
.spring-over span { color: var(--gul); font-size: 1.1rem; }

@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; }

/* Det, Kemichael peger paa, mens han taler om det */
@keyframes peg {
    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); }
}

.peg { outline: 2px solid var(--gul); outline-offset: 2px; 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 9px 0;
    font-size: 0.84rem;
    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 > h2 .taeller {
    font-size: 0.76rem;
    letter-spacing: 0.04em;
    color: var(--tekst-mat);
    font-weight: 600;
    text-transform: none;
}

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

/* ----- Haeld i -------------------------------------------------------- */
.stofknapper { display: grid; grid-template-columns: repeat(3, 1fr); gap: 7px; }

.stofknap {
    --farve: var(--vand);
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 2px;
    padding: 8px 10px 9px;
    border-radius: var(--radius-lil);
    border: 1px solid var(--farve);
    border-left-width: 5px;
    background-color: rgba(255, 255, 255, 0.04);
    color: var(--tekst);
    font-family: inherit;
    text-align: left;
    cursor: pointer;
    transition: background-color 0.15s ease, transform 0.08s ease;
}

.stofknap[data-stof="ethanol"] { --farve: var(--ethanol); }
.stofknap[data-stof="olie"] { --farve: var(--olie); }
.stofknap:hover:not(:disabled) { background-color: rgba(255, 255, 255, 0.1); }
.stofknap:active:not(:disabled) { transform: scale(0.97); }
.stofknap:disabled { opacity: 0.45; cursor: not-allowed; }

.stofknap .sn { font-size: 0.95rem; font-weight: 700; }
.stofknap .sn::before { content: "+ "; color: var(--farve); }
.stofknap .sf { font-size: 0.82rem; color: var(--tekst-svag); }
.stofknap .sp { font-size: 0.75rem; font-weight: 700; letter-spacing: 0.04em; color: var(--farve); }

.maengde {
    margin: 9px 0 0;
    font-size: 0.82rem;
    line-height: 1.4;
    color: var(--tekst-mat);
}

.maengde b { color: var(--tekst-svag); font-weight: 600; }

/* ----- Ryst og varm ---------------------------------------------------- */
.knap.ryst {
    width: 100%;
    justify-content: center;
    padding: 11px 13px;
    font-size: 0.95rem;
    background-color: var(--roed-mork);
    border-color: var(--roed);
    box-shadow: 0 4px 0 #6f2019;
}

.knap.ryst:hover:not(:disabled) { background-color: var(--roed); }
.knap.ryst:active:not(:disabled) { transform: translateY(3px); box-shadow: 0 1px 0 #6f2019; }

.temperatur { margin-top: 12px; }

/* Tilbagesvaling eller destillation: to knapper, den valgte lyser */
.koelervalg {
    display: grid;
    grid-template-columns: 1fr 1fr;
    margin-top: 12px;
    border: 1px solid #4a4a58;
    border-radius: var(--radius-lil);
    overflow: hidden;
}

.koelerknap {
    background-color: var(--panel-2);
    color: var(--tekst-svag);
    border: 0;
    padding: 8px 6px;
    font-family: inherit;
    font-size: 0.82rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.15s ease, color 0.15s ease;
}

.koelerknap + .koelerknap { border-left: 1px solid #4a4a58; }
.koelerknap:hover { background-color: var(--panel-3); color: var(--tekst); }
.koelerknap.valgt { background-color: #1f4d6b; color: #e0f2fe; box-shadow: inset 0 -2px 0 #7dd3fc; }

#destillat { margin-top: 8px; }

.temp-hoved {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
}

.temp-hoved span { font-size: 0.82rem; color: var(--tekst-svag); }

.temp-tal {
    font-family: Consolas, "Courier New", monospace;
    font-size: 1.35rem;
    font-weight: 700;
    color: #ff8a7a;
}

.temperatur input[type=range] {
    width: 100%;
    margin: 6px 0 2px;
    accent-color: var(--roed);
    cursor: pointer;
}

/* Kogepunkterne under skyderen, placeret efter temperaturen (20-120 °C) */
.kp-skala { position: relative; height: 18px; font-size: 0.75rem; color: var(--tekst-mat); }
.kp-skala span { position: absolute; top: 0; transform: translateX(-50%); white-space: nowrap; font-weight: 600; }
.kp-skala .kp-ethanol { color: var(--ethanol); }
.kp-skala .kp-vand { color: #6ea8ff; }
.kp-skala .kant-v { transform: none; left: 0; }
.kp-skala .kant-h { transform: none; right: 0; left: auto; }

/* ----- Knapper --------------------------------------------------------- */
.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: 0.82rem;
    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[hidden] { display: none; }
.knap.stor { padding: 11px 13px; font-size: 0.92rem; width: 100%; justify-content: center; }
.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 { width: 100%; justify-content: center; margin-top: 9px; font-size: 0.8rem; padding: 6px 10px; }

@keyframes bank {
    0%   { box-shadow: 0 0 0 0 rgba(63, 174, 114, 0.6); }
    70%  { box-shadow: 0 0 0 11px rgba(63, 174, 114, 0); }
    100% { box-shadow: 0 0 0 0 rgba(63, 174, 114, 0); }
}

.knap.banker { animation: bank 1.7s ease-out infinite; }

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

.opgavetekst { margin: 0 0 10px; font-size: 0.92rem; line-height: 1.45; color: var(--tekst); }
.opgavetekst:empty { display: none; }

.valg { display: grid; gap: 7px; margin-bottom: 10px; }
.valg:empty { display: none; }

.valgknap {
    background-color: var(--panel-2);
    color: var(--tekst);
    border: 1px solid #4a4a58;
    border-radius: var(--radius-lil);
    padding: 9px 11px;
    font-family: inherit;
    font-size: 0.88rem;
    font-weight: 600;
    text-align: left;
    cursor: pointer;
    line-height: 1.35;
}

.valgknap:hover:not(:disabled) { background-color: var(--panel-3); border-color: var(--blaa); }
.valgknap:disabled { cursor: default; }
.valgknap.rigtig { border-color: var(--groen); background-color: rgba(63, 174, 114, 0.14); color: #b9f0cf; }
.valgknap.forkert { border-color: var(--roed); background-color: rgba(224, 84, 70, 0.12); color: #f7b9b2; }
.valgknap.mat { opacity: 0.45; }

.besked { margin: 0 0 10px; font-size: 0.9rem; line-height: 1.5; color: var(--tekst-svag); }
.besked:empty { display: none; }
.besked.god   { color: #7ee0a8; }
.besked.skidt { color: #f0918a; }
.besked.gul   { color: #f0d77a; }

/* ---------------------------------------------------------------------
   POP OP (teori og quiz)
   --------------------------------------------------------------------- */
.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: 660px;
    width: 100%;
    max-height: 100%;
    overflow-y: auto;
    padding: 24px 26px;
}

.overlay-boks.smal { max-width: 520px; }

.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; }

.knapper { display: flex; gap: 8px; justify-content: flex-end; margin-top: 16px; }
.knapper .knap { justify-content: center; min-width: 110px; }

.tabel {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.88rem;
    margin: 4px 0 8px;
}

.tabel th, .tabel td { padding: 5px 8px; text-align: left; border-bottom: 1px solid #3a3a47; color: #c8ced6; }
.tabel th { font-size: 0.75rem; letter-spacing: 0.06em; text-transform: uppercase; color: var(--tekst-mat); font-weight: 700; }
.tabel td.tal { text-align: right; font-variant-numeric: tabular-nums; }
.tabel .prik { display: inline-block; width: 11px; height: 11px; border-radius: 50%; margin-right: 7px; vertical-align: -1px; }

kbd {
    display: inline-block;
    padding: 1px 6px;
    border: 1px solid #55556a;
    border-bottom-width: 2px;
    border-radius: 4px;
    background-color: #1f1f28;
    font-family: inherit;
    font-size: 0.78rem;
    color: var(--tekst);
}

/* ----- Quizzen -------------------------------------------------------- */
.quiz-tal {
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.09em;
    text-transform: uppercase;
    color: var(--blaa);
    margin-bottom: 8px;
}

.quiz-spm { font-size: 1.02rem; font-weight: 600; line-height: 1.45; margin: 0 0 14px; color: var(--tekst); }
.quiz-svar { display: grid; gap: 8px; }
.quiz-forklaring { margin-top: 12px; }

/* ---------------------------------------------------------------------
   RUNDVISNINGEN (samme som 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 {
    outline: 2px solid var(--gul);
    outline-offset: 2px;
}

@media (max-width: 1320px) {
    :root { --panel-bredde: 380px; }
}

@media (max-width: 860px) {
    body { overflow: auto; }
    .top { flex-wrap: wrap; gap: 10px; }
    main { overflow: visible; }
    .fane { position: static; grid-template-columns: minmax(0, 1fr); }
    .scene { height: 62vh; min-height: 340px; }
    .panel { border-left: none; border-top: 1px solid #1f1f27; }
}

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

/* 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); }

/* hidden skal skjule tilbuddet, selv om .tilbud giver display: flex */
.tilbud[hidden] { display: none; }