* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    width: 100%;
    height: 100%;
    overflow: hidden;
    background: #1a1a1a;
    cursor: crosshair;
}

canvas {
    display: block;
    position: absolute;
    top: 0;
    left: 0;
}

canvas.overlay {
    pointer-events: none;
    z-index: 1;
}

.toolbar {
    position: fixed;
    top: 12px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
    display: flex;
    gap: 12px;
    align-items: center;
    background: rgba(40, 36, 30, 0.85);
    padding: 8px 14px;
    border-radius: 8px;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-size: 13px;
    color: #d4c9b8;
    user-select: none;
    white-space: nowrap;
    flex-wrap: nowrap;
    flex-shrink: 0;
}

@media (max-width: 900px) {
    .toolbar {
        left: 12px;
        right: 12px;
        transform: none;
        flex-wrap: wrap;
        white-space: normal;
        justify-content: center;
    }

    .toolbar .spacer {
        display: none;
    }

    .toolbar .separator {
        display: none;
    }
}

@media (max-width: 480px) {
    .toolbar {
        top: 6px;
        padding: 6px 10px;
        gap: 8px;
        font-size: 12px;
    }

    .toolbar select,
    .toolbar button {
        font-size: 12px;
        padding: 2px 6px;
    }
}

.toolbar label {
    display: flex;
    align-items: center;
    gap: 6px;
    white-space: nowrap;
}

.toolbar select,
.toolbar button {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 4px;
    color: #d4c9b8;
    padding: 3px 8px;
    font-size: 13px;
    cursor: pointer;
}

.toolbar input[type="checkbox"] {
    accent-color: #a09080;
    cursor: pointer;
}

.toolbar select:hover,
.toolbar button:hover {
    background: rgba(255, 255, 255, 0.18);
}

.toolbar .hint {
    opacity: 0.6;
    font-size: 11px;
}

.toolbar .separator {
    width: 1px;
    height: 18px;
    background: rgba(255, 255, 255, 0.15);
}

.toolbar .spacer {
    flex: 1;
}

.modal-overlay {
    position: fixed;
    inset: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.5);
}

.modal {
    background: rgba(40, 36, 30, 0.95);
    border-radius: 12px;
    padding: 32px 36px;
    max-width: 480px;
    color: #d4c9b8;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-size: 15px;
    line-height: 1.6;
}

.modal h1 {
    font-size: 28px;
    margin-bottom: 16px;
    color: #e8dcc8;
}

.modal p {
    margin-bottom: 14px;
}

.modal-close {
    margin-top: 8px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 4px;
    color: #d4c9b8;
    padding: 6px 16px;
    font-size: 13px;
    cursor: pointer;
}

.modal-close:hover {
    background: rgba(255, 255, 255, 0.18);
}