:root {
    --solveur-add-primary: #2c3e50;
    --solveur-add-accent: #e74c3c;
    --solveur-add-grid: #ced4da;
    --solveur-add-bg: #f8f9fa;
}

.solveur-addition {
    font-family: "Courier New", monospace;
}

.solveur-addition .solveur-panel {
    max-width: 600px;
}

.solveur-addition .solveur-fields {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.5rem;
}

.solveur-addition .solveur-feedback .alert {
    margin-bottom: 0;
}

.solveur-addition .solveur-output {
    overflow-x: auto;
}

.solveur-addition .math-grid {
    background-color: #fff;
    background-image:
        linear-gradient(var(--solveur-add-grid) 1px, transparent 1px),
        linear-gradient(90deg, var(--solveur-add-grid) 1px, transparent 1px);
    background-size: 30px 30px;
    display: inline-grid;
    padding: 30px;
    border: 2px solid #adb5bd;
    grid-auto-rows: 30px;
    grid-auto-columns: 30px;
    position: relative;
    min-height: 150px;
}

.solveur-addition .cell {
    width: 30px;
    height: 30px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.6rem;
    font-weight: bold;
    position: relative;
}

.solveur-addition .virgule-abs {
    position: absolute;
    right: -5px;
    bottom: -5px;
    color: var(--solveur-add-accent);
    font-size: 2.3rem;
    z-index: 10;
    font-family: sans-serif;
}

.solveur-addition .retenue-cell {
    font-size: 1rem;
    color: var(--solveur-add-accent);
    font-weight: bold;
    display: flex;
    align-items: flex-end;
    padding-bottom: 2px;
}

.solveur-addition .full-line {
    border-bottom: 3px solid black;
    height: 30px;
    pointer-events: none;
    z-index: 5;
    transform: translateY(2px);
}

.solveur-addition .unite {
    color: #0000ff !important;
}

.solveur-addition .color-0 {
    color: #198754;
}

.solveur-addition .color-1 {
    color: #6f42c1;
}

.solveur-addition .op-sign {
    font-size: 1.5rem;
    font-weight: bold;
}

@media (min-width: 768px) {
    .solveur-addition .solveur-fields {
        grid-template-columns: 1fr 1fr;
    }
}

@media print {
    .solveur-addition .solveur-panel {
        display: none;
    }

    .solveur-addition .math-grid {
        border: none;
    }
}