:root {
    --grid-size: 20; /* Default grid size */
    --cell-pixel-size: 20px; /* Size of each cell in pixels */
    --game-board-dimension: calc(var(--grid-size) * var(--cell-pixel-size) + (var(--grid-size) - 1) * 1px); /* + gaps */
}

body {
    background-color: var(--bs-body-bg);
    color: var(--bs-body-color);
    font-family: "Comic Relief", system-ui;
    transition: background-color 0.3s ease, color 0.3s ease;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px 0;
}

.container {
    max-width: fit-content;
    width: 100%;
}

h1 {
    color: var(--bs-body-color);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
    font-weight: 700;
    text-align: center;
}

.lead {
    color: var(--bs-body-color);
    opacity: 0.8;
    margin-bottom: 20px;
}

.info-box {
    background-color: var(--bs-tertiary-bg);
    border: 2px solid var(--bs-border-color);
    border-radius: 10px;
    padding: 10px 15px;
    min-width: 120px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.info-label {
    font-size: 0.8rem;
    color: var(--bs-body-color);
    opacity: 0.7;
    text-transform: uppercase;
    font-weight: 600;
}

.info-value {
    font-size: 1.5rem;
    font-weight: bold;
}

.input-group .form-select {
    background-color: var(--bs-card-bg);
    color: var(--bs-body-color);
    border-color: var(--bs-border-color);
    max-width: 180px;
}

.input-group .input-group-text {
    background-color: var(--bs-tertiary-bg);
    color: var(--bs-body-color);
    border-color: var(--bs-border-color);
}

.btn {
    border-radius: 8px;
    font-weight: 600;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    gap: 8px;
}

.btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.btn-info.text-white {
    color: #fff !important;
}

#game-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-top: 20px;
}

#wrapper {
    width: var(--game-board-dimension);
    height: var(--game-board-dimension);
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(var(--grid-size), 1fr);
    grid-template-rows: repeat(var(--grid-size), 1fr);
    gap: 1px;
    background-color: var(--bs-border-color); /* Grid lines color */
    border: 2px solid var(--bs-border-color);
    border-radius: 5px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}

.cell {
    width: var(--cell-pixel-size);
    height: var(--cell-pixel-size);
    background-color: var(--bs-secondary-bg);
    transition: background-color 0.05s ease-in-out;
}

.cell.snake {
    background-color: var(--bs-success);
    border-radius: 2px;
}

.cell.snake-head {
    background-color: var(--bs-success);
    border-radius: 50%;
}

.cell.food {
    background-color: var(--bs-danger);
    border-radius: 50%;
    transform: scale(0.8);
    transition: transform 0.2s ease-out;
}

/* Mobile Controls */
#mobile-controls {
    margin-top: 20px;
}

.btn-control {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

/* Modal Styling */
.modal-content {
    background-color: var(--bs-body-bg);
    color: var(--bs-body-color);
    border: 1px solid var(--bs-border-color);
    border-radius: 1rem;
}

.modal-header {
    border-bottom: 1px solid var(--bs-border-color);
}

.modal-footer {
    border-top: 1px solid var(--bs-border-color);
}

/* Responsive adjustments */
@media (max-width: 768px) {
    :root {
        --grid-size: 15; /* Smaller grid for smaller screens */
        --cell-pixel-size: 18px;
    }
    h1 {
        font-size: 2rem;
    }
}

@media (max-width: 576px) {
    :root {
        --grid-size: 15;
        --cell-pixel-size: 16px;
    }
    .info-box {
        min-width: 90px;
        padding: 8px 10px;
    }
    .info-label {
        font-size: 0.7rem;
    }
    .info-value {
        font-size: 1.2rem;
    }
    .btn {
        padding: 8px 15px;
        font-size: 0.9rem;
        gap: 6px;
    }
    .btn-control {
        width: 50px;
        height: 50px;
        font-size: 1.2rem;
    }
}