body {
    margin: 0;
    font-family: 'Segoe UI', sans-serif;
    background: black;
    overflow: hidden;
    color: white;
}

canvas {
    position: fixed;
    top: 0;
    left: 0;
    z-index: -1;
}

.container {
    max-width: 800px;
    margin: 40px auto;
    padding: 20px;
    background: rgba(20, 20, 20, 0.15); /* more transparent */
    border-radius: 15px;
    backdrop-filter: blur(6px);
    box-shadow: 0 0 25px rgba(0, 255, 255, 0.1);
}

.glow-title {
    text-align: center;
    font-size: 2em;
    font-weight: 300;
    color: #00ffff;
    animation: slowPulse 3s infinite alternate ease-in-out;
}

@keyframes slowPulse {
    0% {
        text-shadow: 0 0 8px #00ffff, 0 0 18px #00ffff, 0 0 35px #00ffff;
    }
    100% {
        text-shadow: 0 0 3px #00ffff, 0 0 8px #00ffff, 0 0 15px #00ffff;
    }
}

.input-area {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
}

input, button {
    padding: 10px;
    border-radius: 10px;
    border: none;
    outline: none;
    font-size: 1em;
}

input[type="text"], input[type="date"] {
    flex: 1;
    background: rgba(255,255,255,0.06);
    color: white;
}

button {
    background: rgba(0,255,255,0.15);
    color: white;
    cursor: pointer;
    backdrop-filter: blur(4px);
    box-shadow: 0 0 10px rgba(0,255,255,0.4);
    transition: background 0.6s ease, box-shadow 0.6s ease;
}

button:hover {
    background: rgba(0,255,255,0.4);
    box-shadow: 0 0 25px rgba(0,255,255,0.9);
}

table {
    width: 100%;
    border-collapse: collapse;
}

th, td {
    padding: 12px;
    text-align: center;
}

tbody tr {
    background: rgba(255,255,255,0.02);
    border-radius: 10px;
    backdrop-filter: blur(4px);
    box-shadow: 0 0 5px rgba(0,255,255,0.05);
}

tbody tr.completed {
    text-decoration: line-through;
    opacity: 0.6;
}