:root {
    --bg-color: #879571;
    --pixel-color: #202815;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: monospace;
    user-select: none;
}

body {
    background-color: var(--bg-color);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100vh;
    width: 100vw;
    overflow: hidden;
    touch-action: none;
}

.game-container {
    width: 100%;
    max-width: 800px;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 1rem;
}

@media (min-width: 640px) {
    .game-container {
        padding: 2rem;
    }
}

.top-bar-container {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 1rem;
    width: 100%;
}

.top-bar {
    display: flex;
    gap: 1.5rem;
    color: var(--pixel-color);
    font-weight: bold;
    font-size: 1.25rem;
}

@media (min-width: 640px) {
    .top-bar {
        font-size: 1.875rem;
        gap: 2rem;
    }
}

.icon-btn {
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.1s, opacity 0.1s;
}

.icon-btn:hover {
    opacity: 0.7;
}

.icon-btn:active {
    transform: scale(0.9);
}

.grid-wrapper {
    position: relative;
    width: 100%;
    aspect-ratio: 1 / 1;
    background-color: rgba(32, 40, 21, 0.05);
    border: 4px solid rgba(32, 40, 21, 0.2);
    border-radius: 0.5rem;
    padding: 4px;
    display: flex;
}

@media (min-width: 640px) {
    .grid-wrapper {
        border-width: 8px;
        padding: 8px;
    }
}

canvas {
    width: 100%;
    height: 100%;
    background-color: transparent;
    image-rendering: pixelated;
}

.overlay {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(135, 149, 113, 0.9);
    backdrop-filter: blur(4px);
    z-index: 20;
}

.overlay.hidden {
    display: none;
}

.overlay-content {
    text-align: center;
    padding: 2rem;
    border: 4px solid var(--pixel-color);
    background-color: var(--bg-color);
    border-radius: 0.75rem;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

.overlay-content h2 {
    color: var(--pixel-color);
    font-size: 2.25rem;
    font-weight: 900;
    margin-bottom: 2rem;
}

@media (min-width: 640px) {
    .overlay-content h2 {
        font-size: 3.75rem;
    }
}

.overlay-content p {
    color: var(--pixel-color);
    font-size: 1.25rem;
    font-weight: bold;
    margin-bottom: 2rem;
}

@media (min-width: 640px) {
    .overlay-content p {
        font-size: 1.5rem;
    }
}

.btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    margin: 0 auto;
    background-color: var(--pixel-color);
    color: var(--bg-color);
    padding: 1rem 1.5rem;
    border-radius: 0.5rem;
    font-weight: bold;
    font-size: 1.125rem;
    text-transform: uppercase;
    border: 4px solid var(--pixel-color);
    cursor: pointer;
    transition: background-color 0.2s, transform 0.1s;
}

.btn:hover {
    background-color: #303c20;
}

.btn:active {
    transform: scale(0.95);
}

.btn.outline {
    background-color: transparent;
    color: var(--pixel-color);
}

.btn.outline:hover {
    background-color: rgba(32, 40, 21, 0.1);
}

.settings-form {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    margin-bottom: 2rem;
    text-align: left;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-group label {
    color: var(--pixel-color);
    font-weight: bold;
    font-size: 1.125rem;
}

.form-group select {
    font-size: 1.125rem;
    padding: 0.5rem;
    background-color: transparent;
    color: var(--pixel-color);
    border: 4px solid var(--pixel-color);
    border-radius: 0.5rem;
    font-family: monospace;
    font-weight: bold;
    cursor: pointer;
}

.form-group select:focus {
    outline: none;
    box-shadow: 0 0 0 2px var(--pixel-color);
}

.settings-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

@media (min-width: 640px) {
    .btn {
        font-size: 1.25rem;
        padding: 1rem 2rem;
    }
    .form-group label, .form-group select {
        font-size: 1.25rem;
    }
}