body {
    font-family: system-ui, sans-serif;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    margin: 0;
    background: #0f172a;
    color: #e2e8f0;
    z-index: -1;
}
#background{
    margin: 0;
    position: absolute;
    width: 100vw;
    height: 100vh;
    object-fit: contain;
    z-index: 0;

}

.canvas-wrapper {
    position: relative;
    width: 100vw;
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

#canvas {
    width: 100%;
    height: 100%;
    background-color: transparent;
    border-radius: 1vw;
    z-index: 2;
}

.box {
    position: absolute;
    text-align: center;
    padding: 2rem;
    border-radius: 12px;
    background: #111827;
    z-index: 1;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    
}

.timer {
    display: grid;
    grid-template-columns: repeat(4, minmax(90px, 1fr));
    gap: 1rem;
}

.unit {
    padding: 1rem;
    border-radius: 10px;
    background: #1f2937;
}

.value {
    font-size: 2.2rem;
    font-weight: 700;
    letter-spacing: 0.5px;
}

.label {
    font-size: 0.85rem;
    opacity: 0.8;
    margin-top: 0.3rem;
}

.done {
    font-size: 1.1rem;
    margin-top: 1rem;
    color: #34d399;
    display: none;
}