:root {
    --grund: #0b1020;
    --karte: #151b33;
    --karte2: #1c2445;
    --rand: #232b4d;
    --rand2: #2a3563;
    --text: #eaf0ff;
    --text-leise: #9aa4cf;
    --cyan: #22d3ee;
    --lime: #a3e635;
    --pink: #f472b6;
    --orange: #fb923c;
    --violett: #a78bfa;
    --gold: #facc15;
    --rot: #fb7185;
    --eingabe: #0f1530
}

* {
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent
}

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

body {
    background: var(--grund);
    color: var(--text);
    font-family: Segoe UI, Roboto, Helvetica Neue, sans-serif;
    overscroll-behavior: none
}

#app {
    min-height: 100vh;
    min-height: 100dvh;
    display: flex;
    flex-direction: column
}

button {
    font-family: inherit
}

.laden {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 10px;
    min-height: 100vh;
    color: var(--text-leise)
}

.laden-logo,
.logo {
    font-weight: 900;
    font-size: 28px;
    letter-spacing: -.02em;
    color: #fff
}

.laden-logo b,
.logo b {
    color: var(--cyan);
    text-shadow: 0 0 14px var(--cyan)
}

.logo-blitz {
    width: 26px;
    height: 26px;
    vertical-align: -4px;
    margin-right: 6px
}

.schirm {
    flex: 1;
    display: flex;
    flex-direction: column;
    width: 100%;
    max-width: 860px;
    margin: 0 auto;
    padding: 12px 14px 20px
}

.kopf {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 10px;
    padding: 4px 0 12px
}

.kopf .rechts {
    display: flex;
    gap: 8px;
    align-items: center
}

.karte {
    background: var(--karte);
    border: 1px solid var(--rand);
    border-radius: 16px;
    padding: 14px 16px;
    margin-bottom: 12px
}

.knopf {
    background: var(--karte2);
    border: 1px solid var(--rand2);
    color: var(--text);
    border-radius: 12px;
    padding: 10px 16px;
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    transition: transform .06s ease
}

.knopf:active {
    transform: scale(.97)
}

.knopf.primaer {
    background: var(--cyan);
    color: var(--grund);
    border-color: var(--cyan);
    box-shadow: 0 0 16px #22d3ee8c
}

.knopf.gruen {
    background: var(--lime);
    color: var(--grund);
    border-color: var(--lime);
    box-shadow: 0 0 14px #a3e63573
}

.knopf.leise {
    background: transparent;
    border-color: var(--rand2);
    color: var(--text-leise)
}

.knopf.gross {
    font-size: 19px;
    padding: 14px 26px
}

.knopf:disabled {
    opacity: .4;
    cursor: default
}

.hinweis-leise {
    color: var(--text-leise);
    font-size: 13px
}

.abstand {
    flex: 1
}

.profil-gitter {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    justify-content: center;
    margin-top: 18px
}

.profil-knopf {
    width: 132px;
    padding: 18px 10px;
    text-align: center;
    background: var(--karte);
    border: 1px solid var(--rand);
    border-radius: 18px;
    color: var(--text);
    font-size: 16px;
    font-weight: 700;
    cursor: pointer
}

.profil-knopf:hover {
    border-color: var(--cyan);
    box-shadow: 0 0 14px #22d3ee4d
}

.profil-avatar {
    font-size: 44px;
    display: block;
    margin-bottom: 8px
}

.avatar-wahl {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin: 10px 0
}

.avatar-wahl button {
    font-size: 26px;
    padding: 8px;
    background: var(--karte2);
    border: 2px solid var(--rand2);
    border-radius: 12px;
    cursor: pointer
}

.avatar-wahl button.gewaehlt {
    border-color: var(--cyan);
    box-shadow: 0 0 10px var(--cyan)
}

.feld {
    width: 100%;
    background: var(--eingabe);
    border: 1px solid var(--rand2);
    color: var(--text);
    border-radius: 10px;
    padding: 10px 12px;
    font-size: 17px
}

.feld:focus {
    outline: none;
    border-color: var(--cyan)
}

label {
    display: block;
    margin: 10px 0 4px;
    color: var(--text-leise);
    font-size: 14px
}

.gruppe-karte {
    border-left: 4px solid var(--gfarbe, var(--cyan))
}

.gruppe-kopf {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px
}

.gruppe-tag {
    width: 32px;
    height: 32px;
    border-radius: 9px;
    flex: none;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 900;
    color: var(--grund);
    background: var(--gfarbe, var(--cyan))
}

.gruppe-name {
    font-weight: 700
}

.gruppe-sterne {
    color: var(--gold);
    font-size: 13px;
    margin-left: auto;
    white-space: nowrap
}

.abzeichen {
    font-size: 20px;
    filter: drop-shadow(0 0 6px var(--gold))
}

.kachel-reihe {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px
}

.modul-titel {
    font-size: 14px;
    font-weight: 800;
    letter-spacing: .08em;
    text-transform: uppercase;
    color: var(--text-leise);
    margin: 14px 0 8px;
    border-bottom: 1px solid var(--rand2);
    padding-bottom: 4px
}

.kachel {
    border-radius: 12px;
    padding: 10px 6px;
    text-align: center;
    font-size: 13px;
    font-weight: 700;
    background: var(--karte2);
    border: 1px solid var(--rand2);
    color: var(--text-leise);
    cursor: pointer;
    line-height: 1.5
}

.kachel .sterne {
    color: var(--gold);
    font-size: 12px;
    display: block
}

.kachel.fertig {
    color: var(--text)
}

.kachel.aktiv {
    color: #fff;
    border-color: var(--gfarbe, var(--cyan));
    box-shadow: 0 0 0 2px var(--gfarbe, var(--cyan)), 0 0 18px var(--gfarbe, var(--cyan))
}

.kachel.gesperrt {
    opacity: .4;
    cursor: default
}

.gesperrt-gruppe {
    opacity: .55
}

.banner {
    background: var(--karte2);
    border: 1px solid var(--lime);
    border-radius: 12px;
    padding: 10px 14px;
    margin-bottom: 12px;
    font-weight: 600
}

.aufgabe-schirm {
    max-width: 760px
}

.fortschritt {
    display: flex;
    gap: 5px;
    margin: 4px 0 10px
}

.fortschritt i {
    flex: 1;
    height: 6px;
    border-radius: 3px;
    background: var(--rand2)
}

.fortschritt i.geschafft {
    background: var(--cyan);
    box-shadow: 0 0 8px var(--cyan)
}

.fortschritt i.jetzt {
    background: var(--text-leise)
}

.geschichte {
    font-size: 18px;
    line-height: 1.55;
    margin: 4px 0 8px
}

.frage {
    font-weight: 800;
    font-size: 19px;
    color: var(--lime);
    margin-bottom: 10px
}

.symbol {
    font-size: 26px;
    float: right;
    margin-left: 8px
}

.eingabe-zeile {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 8px
}

.eingabe-anzeige {
    flex: 1;
    background: var(--eingabe);
    border: 2px solid var(--cyan);
    border-radius: 14px;
    font-size: 32px;
    font-weight: 800;
    padding: 8px 16px;
    color: #fff;
    letter-spacing: .1em;
    min-height: 56px;
    text-align: right;
    box-shadow: 0 0 18px #22d3ee59
}

.eingabe-anzeige.leer {
    color: var(--text-leise)
}

.eingabe-anzeige.falsch {
    border-color: var(--rot);
    box-shadow: 0 0 18px #fb718580;
    animation: wackeln .35s
}

@keyframes wackeln {

    0%,
    to {
        transform: translate(0)
    }

    25% {
        transform: translate(-7px)
    }

    75% {
        transform: translate(7px)
    }
}

.zahlenfeld {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
    margin-top: 10px
}

.zahlenfeld button {
    background: var(--karte2);
    border: 1px solid var(--rand2);
    color: var(--text);
    border-radius: 12px;
    padding: 13px;
    text-align: center;
    font-weight: 800;
    font-size: 22px;
    cursor: pointer;
    touch-action: manipulation
}

.zahlenfeld button:active {
    transform: scale(.96)
}

.zahlenfeld .los {
    background: var(--cyan);
    color: var(--grund);
    box-shadow: 0 0 16px var(--cyan)
}

.hinweis-box {
    background: var(--karte2);
    border: 1px solid var(--gold);
    border-radius: 12px;
    padding: 10px 14px;
    margin: 10px 0;
    line-height: 1.5
}

.hinweis-box b {
    color: var(--gold)
}

.loesung-box {
    background: var(--karte2);
    border: 1px solid var(--cyan);
    border-radius: 12px;
    padding: 10px 14px;
    margin: 10px 0;
    line-height: 1.55
}

.loesung-box b {
    color: var(--cyan)
}

.figur-zeile {
    display: flex;
    align-items: flex-end;
    gap: 10px;
    margin-top: 12px;
    min-height: 96px
}

.blase {
    background: var(--karte2);
    border: 1px solid var(--lime);
    border-radius: 14px;
    padding: 10px 14px;
    font-size: 15px;
    line-height: 1.45;
    flex: 1
}

.sterne-gross {
    font-size: 26px;
    color: var(--gold);
    text-shadow: 0 0 12px var(--gold)
}

.pause-schirm {
    align-items: center;
    justify-content: center;
    text-align: center;
    gap: 14px;
    display: flex;
    flex-direction: column;
    flex: 1
}

.pause-zahl {
    font-size: 84px;
    font-weight: 900;
    color: var(--cyan);
    text-shadow: 0 0 26px var(--cyan);
    font-variant-numeric: tabular-nums
}

.pause-tipp {
    color: var(--text-leise);
    font-size: 17px;
    max-width: 420px;
    line-height: 1.5
}

.gross-titel {
    font-size: 26px;
    font-weight: 900;
    margin: 6px 0
}

.wert-reihe {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin: 10px 0
}

.wert-kachel {
    background: var(--karte2);
    border: 1px solid var(--rand2);
    border-radius: 12px;
    padding: 10px 16px;
    text-align: center;
    flex: 1;
    min-width: 110px
}

.wert-kachel .zahl {
    font-size: 26px;
    font-weight: 900;
    color: var(--cyan)
}

.wert-kachel .was {
    font-size: 12px;
    color: var(--text-leise)
}

.konfetti {
    font-size: 40px;
    animation: huepf .9s ease infinite alternate;
    display: inline-block
}

@keyframes huepf {
    0% {
        transform: translateY(0)
    }

    to {
        transform: translateY(-10px)
    }
}

.konfetti-regen {
    position: fixed;
    inset: 0;
    pointer-events: none;
    overflow: hidden;
    z-index: 40
}

.konfetti-regen i {
    position: absolute;
    top: -16px;
    width: 10px;
    height: 14px;
    border-radius: 3px;
    opacity: .95;
    animation-name: konfetti-fall;
    animation-timing-function: linear;
    animation-fill-mode: forwards
}

@keyframes konfetti-fall {
    to {
        transform: translateY(106vh) rotate(560deg);
        opacity: .6
    }
}

.rb-gitter {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 8px
}

.rb-aufgabe {
    background: var(--karte);
    border: 1px solid var(--rand);
    border-radius: 10px;
    padding: 7px 9px;
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 15px;
    font-weight: 700;
    cursor: pointer;
    white-space: nowrap
}

.rb-aufgabe .term {
    flex: 1
}

.rb-eingabe {
    min-width: 46px;
    padding: 4px 6px;
    background: var(--eingabe);
    border: 1px solid var(--rand2);
    border-radius: 8px;
    text-align: center;
    color: #fff;
    font-weight: 800;
    min-height: 28px
}

.rb-aufgabe.aktivfeld .rb-eingabe {
    border-color: var(--cyan);
    box-shadow: 0 0 8px var(--cyan)
}

.rb-aufgabe.richtig {
    border-color: var(--lime)
}

.rb-aufgabe.richtig .rb-eingabe {
    border-color: var(--lime);
    color: var(--lime)
}

.rb-aufgabe.falsch {
    border-color: var(--rot)
}

.rb-aufgabe.falsch .rb-eingabe {
    border-color: var(--rot);
    color: var(--rot)
}

.rb-loesung {
    color: var(--lime);
    font-size: 13px;
    margin-left: 4px
}

.rb-fuss {
    position: sticky;
    bottom: 0;
    background: var(--grund);
    padding: 10px 0 4px
}

.tabelle {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
    margin: 8px 0
}

.tabelle th,
.tabelle td {
    border-bottom: 1px solid var(--rand);
    padding: 7px 8px;
    text-align: left
}

.tabelle th {
    color: var(--text-leise);
    font-weight: 600
}

.tab-leiste {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 12px
}

.tab-leiste .knopf.gewaehlt {
    background: var(--cyan);
    color: var(--grund);
    border-color: var(--cyan)
}

.fehler-eintrag {
    border-left: 3px solid var(--rot);
    padding-left: 10px;
    margin: 8px 0;
    font-size: 14px;
    line-height: 1.5
}

.journal-eintrag {
    border-left: 3px solid var(--rand2);
    padding-left: 10px;
    margin: 8px 0;
    font-size: 14px
}

.modal-hintergrund {
    position: fixed;
    inset: 0;
    background: #040610bf;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 50;
    padding: 16px
}

.modal {
    background: var(--karte);
    border: 1px solid var(--rand2);
    border-radius: 16px;
    padding: 18px;
    width: 100%;
    max-width: 380px
}

.modal h3 {
    margin: 0 0 10px
}

.pin-anzeige {
    display: flex;
    gap: 10px;
    justify-content: center;
    margin: 12px 0
}

.pin-punkt {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--rand2)
}

.pin-punkt.voll {
    background: var(--cyan);
    box-shadow: 0 0 8px var(--cyan)
}

@media(min-width:700px) {
    .aufgabe-schirm .karte {
        display: grid;
        grid-template-columns: 1fr 250px;
        column-gap: 18px
    }

    .aufgabe-schirm .karte>* {
        grid-column: 1
    }

    .aufgabe-schirm .karte>.zahlenfeld {
        grid-column: 2;
        grid-row: 1 / span 6;
        align-self: center;
        margin-top: 0
    }

    .aufgabe-schirm .geschichte {
        font-size: 19px
    }
}

@media(max-width:420px) {
    .rb-gitter {
        grid-template-columns: repeat(2, 1fr)
    }
}

/* ============================================================
   Zahlen-Baukasten (Zieh-Bausteine + Kästchen untereinander)
   ============================================================ */
.baukasten {
    margin: 12px 0;
    padding: 12px;
    background: var(--karte2);
    border: 1px solid var(--rand2);
    border-radius: 14px
}

.bk-titel {
    color: var(--text-leise);
    font-size: 14px;
    margin-bottom: 8px
}

.bk-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 12px
}

.bk-chip {
    min-width: 46px;
    padding: 8px 12px;
    font-size: 20px;
    font-weight: 800;
    color: var(--grund);
    background: var(--cyan);
    border: none;
    border-radius: 10px;
    cursor: grab;
    touch-action: none;
    box-shadow: 0 2px 0 rgba(0, 0, 0, .35)
}

.bk-chip:active {
    cursor: grabbing;
    transform: scale(1.06)
}

.bk-geist {
    position: fixed;
    z-index: 99;
    transform: translate(-50%, -120%);
    pointer-events: none;
    opacity: .9
}

.bk-rechnung {
    display: inline-flex;
    flex-direction: column;
    gap: 6px
}

.bk-zeile {
    display: flex;
    align-items: center;
    gap: 10px
}

.bk-op {
    width: 26px;
    text-align: right;
    font-size: 22px;
    font-weight: 800;
    color: var(--gold)
}

.bk-slot {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 58px;
    height: 44px;
    font-size: 21px;
    font-weight: 800;
    color: var(--text);
    background: var(--grund);
    border: 2px dashed var(--rand2);
    border-radius: 10px;
    cursor: pointer
}

.bk-slot.ziel {
    border-color: var(--cyan);
    box-shadow: 0 0 10px var(--cyan)
}

.bk-slot.voll {
    border-style: solid
}

.bk-slot.passt {
    border-color: var(--lime);
    color: var(--lime)
}

.bk-slot.voll:not(.passt) {
    border-color: var(--orange);
    color: var(--orange)
}

.bk-ergebnis {
    border-top: 2px solid var(--rand2);
    padding-top: 6px;
    margin-top: 2px
}

.bk-frage {
    min-width: 58px;
    text-align: center;
    font-size: 22px;
    font-weight: 800;
    color: var(--text-leise)
}

.bk-schritt-nr {
    width: 22px;
    color: var(--text-leise);
    font-weight: 700
}

.bk-merker {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 46px;
    height: 40px;
    font-size: 16px;
    font-weight: 800;
    color: var(--violett);
    background: var(--grund);
    border: 2px solid var(--violett);
    border-radius: 10px
}

/* ============================================================
   Illustrative Aufdeckung (nach dem 3. Fehler)
   ============================================================ */
.illu-schritte {
    margin-top: 10px;
    display: flex;
    flex-direction: column;
    gap: 8px
}

.illu-zeile {
    opacity: 0;
    animation: illu-auf .6s ease forwards
}

@keyframes illu-auf {
    from {
        opacity: 0;
        transform: translateY(6px)
    }
    to {
        opacity: 1;
        transform: none
    }
}

.illu-term {
    font-size: 21px;
    font-weight: 800
}

.illu-ergebnis {
    font-size: 21px;
    font-weight: 900;
    color: var(--lime)
}

.illu-bild {
    font-size: 20px;
    letter-spacing: 2px;
    margin-top: 2px
}

.illu-plus {
    color: var(--gold);
    font-weight: 900
}

.illu-weg {
    opacity: .35;
    filter: grayscale(1);
    text-decoration: line-through
}

/* Treppenform: Tippfelder für Zwischenergebnisse */
.bk-rechnung {
    max-width: 100%;
    overflow-x: auto;
    padding-bottom: 4px
}

.bk-tipp {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 58px;
    height: 44px;
    font-size: 21px;
    font-weight: 800;
    color: var(--text);
    background: var(--grund);
    border: 2px solid var(--cyan);
    border-radius: 10px;
    cursor: pointer
}

.bk-tipp:empty::before {
    content: "tippen";
    font-size: 11px;
    font-weight: 700;
    color: var(--text-leise)
}

.bk-tipp.aktiv {
    box-shadow: 0 0 12px var(--cyan);
    background: #10203a
}

.bk-tipp.passt {
    border-color: var(--lime);
    color: var(--lime)
}

.bk-tipp.daneben {
    border-color: var(--orange);
    color: var(--orange)
}

/* Weiter-Pfeil rechts neben dem Antwortfeld (statt breitem Balken unten) */
.weiter-pfeil {
    width: 56px;
    height: 56px;
    flex: 0 0 56px;
    border-radius: 50%;
    font-size: 28px;
    font-weight: 900;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: pfeil-puls 1.2s ease-in-out infinite
}

@keyframes pfeil-puls {
    0%, 100% {
        transform: scale(1)
    }
    50% {
        transform: scale(1.12)
    }
}