.lab-hero {
    padding-bottom: 55px;
}

.lab-shell {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 290px;
    align-items: start;
    gap: 20px;
}

.game-panel,
.score-panel {
    border: 1px solid var(--border);
    border-radius: 24px;
    background:
        linear-gradient(145deg, rgba(21, 43, 66, .93), rgba(10, 25, 40, .92));
    box-shadow: var(--shadow);
}

.game-panel {
    min-height: 610px;
    padding: 32px;
}

.score-panel {
    position: sticky;
    top: 102px;
    padding: 25px;
}

.game-topline {
    margin-bottom: 25px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.game-round {
    color: var(--muted);
    font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
    font-size: 13px;
}

.severity {
    padding: 6px 10px;
    border: 1px solid var(--border-strong);
    border-radius: 999px;
    font-size: 11px;
    font-weight: 800;
    letter-spacing: .08em;
}

.severity-low {
    background: rgba(72, 181, 137, .10);
    color: #8be2bb;
}

.severity-medium {
    background: rgba(240, 179, 80, .10);
    color: #f4ca81;
}

.severity-high {
    background: rgba(238, 101, 101, .10);
    color: #ffaaaa;
}

.scenario-label {
    margin: 0 0 12px;
    color: var(--accent-light);
    font-size: 12px;
    font-weight: 800;
    letter-spacing: .16em;
    text-transform: uppercase;
}

.scenario-title {
    margin: 0;
    font-size: clamp(30px, 5vw, 45px);
    line-height: 1.08;
    letter-spacing: -.045em;
}

.scenario-description {
    margin: 22px 0 0;
    color: var(--muted-light);
    font-size: 16px;
    line-height: 1.75;
}

.signal-box {
    margin: 26px 0;
    padding: 20px;
    border: 1px solid var(--border);
    border-radius: 15px;
    background: rgba(4, 14, 24, .48);
}

.signal-box strong {
    display: block;
    margin-bottom: 10px;
    color: var(--text);
    font-size: 13px;
}

.signal-list {
    margin: 0;
    padding-left: 19px;
    color: var(--muted);
}

.signal-list li {
    margin: 7px 0;
}

.choice-list {
    display: grid;
    gap: 12px;
}

.choice-button {
    width: 100%;
    padding: 18px 20px;
    display: grid;
    grid-template-columns: 34px 1fr;
    align-items: start;
    gap: 13px;
    border: 1px solid var(--border);
    border-radius: 14px;
    background: rgba(255, 255, 255, .035);
    color: var(--text);
    text-align: left;
    font: inherit;
    cursor: pointer;
    transition:
        transform .16s ease,
        border-color .16s ease,
        background .16s ease;
}

.choice-button:hover,
.choice-button:focus-visible {
    transform: translateY(-2px);
    border-color: rgba(123, 165, 255, .48);
    background: rgba(109, 158, 255, .09);
    outline: none;
}

.choice-button:disabled {
    cursor: default;
    opacity: .55;
    transform: none;
}

.choice-key {
    width: 31px;
    height: 31px;
    display: grid;
    place-items: center;
    border: 1px solid var(--border-strong);
    border-radius: 9px;
    color: var(--accent-light);
    font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
    font-size: 12px;
    font-weight: 800;
}

.choice-copy strong {
    display: block;
    font-size: 15px;
}

.choice-copy span {
    display: block;
    margin-top: 5px;
    color: var(--muted);
    font-size: 13px;
    line-height: 1.55;
}

.decision-result {
    margin-top: 23px;
    padding: 21px;
    border: 1px solid rgba(109, 158, 255, .25);
    border-radius: 15px;
    background: rgba(109, 158, 255, .075);
}

.decision-result[hidden] {
    display: none;
}

.result-title {
    margin: 0 0 8px;
    font-size: 18px;
}

.result-text {
    margin: 0;
    color: var(--muted-light);
    line-height: 1.65;
}

.result-effects {
    margin-top: 15px;
    display: flex;
    flex-wrap: wrap;
    gap: 9px;
}

.effect {
    padding: 6px 9px;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
    font-size: 12px;
}

.next-button {
    margin-top: 19px;
}

.score-title {
    margin: 0 0 23px;
    font-size: 17px;
}

.score-item + .score-item {
    margin-top: 22px;
}

.score-heading {
    margin-bottom: 8px;
    display: flex;
    justify-content: space-between;
    gap: 20px;
    color: var(--muted-light);
    font-size: 13px;
}

.score-value {
    color: var(--text);
    font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
}

.score-track {
    height: 8px;
    overflow: hidden;
    border-radius: 999px;
    background: rgba(255, 255, 255, .07);
}

.score-fill {
    height: 100%;
    width: 0;
    border-radius: inherit;
    background: linear-gradient(90deg, var(--accent), var(--accent-light));
    transition: width .35s ease;
}

.score-note {
    margin: 25px 0 0;
    padding-top: 20px;
    border-top: 1px solid var(--border);
    color: var(--muted);
    font-size: 12px;
    line-height: 1.65;
}

.final-screen {
    min-height: 500px;
    display: grid;
    place-items: center;
    text-align: center;
}

.final-screen[hidden] {
    display: none;
}

.final-grade {
    width: 110px;
    height: 110px;
    margin: 0 auto 25px;
    display: grid;
    place-items: center;
    border: 1px solid rgba(109, 158, 255, .4);
    border-radius: 32px;
    background: rgba(109, 158, 255, .10);
    color: var(--accent-light);
    font-size: 47px;
    font-weight: 900;
    letter-spacing: -.05em;
}

.final-screen h2 {
    margin: 0;
    font-size: 38px;
    letter-spacing: -.04em;
}

.final-screen p {
    max-width: 610px;
    margin: 18px auto 0;
    color: var(--muted);
    font-size: 16px;
    line-height: 1.7;
}

.final-metrics {
    margin: 28px auto 0;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
}

.final-metric {
    padding: 10px 13px;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: rgba(255, 255, 255, .035);
    font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
    font-size: 13px;
}

.restart-button {
    margin-top: 28px;
}

@media (max-width: 900px) {
    .lab-shell {
        grid-template-columns: 1fr;
    }

    .score-panel {
        position: static;
        order: -1;
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: 17px;
    }

    .score-title,
    .score-note {
        grid-column: 1 / -1;
    }

    .score-item + .score-item {
        margin-top: 0;
    }
}

@media (max-width: 620px) {
    .game-panel {
        padding: 22px;
    }

    .score-panel {
        grid-template-columns: 1fr;
    }

    .score-title,
    .score-note {
        grid-column: auto;
    }

    .game-topline {
        align-items: flex-start;
        flex-direction: column;
    }
}