body {
    min-height: 100vh;
    background: linear-gradient(120deg, #1a2980, #26d0ce 100%);
    font-family: 'Montserrat', 'Arial', sans-serif;
    margin: 0;
    display: flex;
    justify-content: center;
    align-items: center;
}

.main-container {
    background: rgba(255,255,255,0.12);
    border-radius: 24px;
    box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1.5px solid rgba(255,255,255,0.22);
    padding: 40px 30px 32px 30px;
    margin: 40px 0;
    display: flex;
    flex-direction: column;
    align-items: center;
}

h1 {
    color: #fff;
    text-shadow: 0 4px 16px rgba(30, 100, 220, 0.23);
    font-size: 2.3em;
    margin-bottom: 18px;
    letter-spacing: 1px;
}

.canvas-block {
    background: rgba(255,255,255,0.14);
    border-radius: 16px;
    box-shadow: 0 4px 24px rgba(44, 62, 80, 0.18);
    padding: 20px 20px 10px 20px;
    margin-bottom: 18px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

canvas {
    display: block;
    background: #e7edf9;
    border-radius: 12px;
    box-shadow: 0 0 16px rgba(43,67,127,0.10);
    margin-bottom: 12px;
}

.controls {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
    margin-bottom: 10px;
}

button, input[type="button"] {
    padding: 10px 24px;
    background: linear-gradient(90deg, #26d0ce 0%, #1a2980 100%);
    color: #fff;
    border: none;
    border-radius: 18px;
    font-weight: bold;
    font-size: 1em;
    margin: 2px;
    box-shadow: 0 2px 10px rgba(30, 120, 255, 0.18);
    cursor: pointer;
    transition: background 0.2s, transform 0.18s;
}
button:hover, input[type="button"]:hover {
    background: linear-gradient(90deg, #1a2980 0%, #26d0ce 100%);
    transform: scale(1.06);
}

label {
    color: #f0f4fa;
    font-size: 1em;
    margin-right: 3px;
}

input[type="number"] {
    border: none;
    border-radius: 8px;
    padding: 6px 12px;
    background: #d8e6f5;
    color: #1a2980;
    font-weight: 600;
    width: 65px;
    margin-right: 8px;
}

@media (max-width: 700px) {
    .main-container {
        padding: 12px;
    }
    .canvas-block {
        padding: 7px;
    }
    h1 {
        font-size: 1.2em;
    }
}