body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: radial-gradient(circle at top left, #ff9cee 0%, #d592ff 42%, #9d6bff 100%);
    text-align: center;
    color: #2a0944;
    min-height: 100vh;
    margin: 0;
}

h1 {
    margin-top: 20px;
    color: #fff;
    text-shadow: 1px 1px 10px rgba(0,0,0,.35);
}

.container {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin: 30px auto;
    padding: 0 12px;
    max-width: 960px;
}

.box {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(6px);
    padding: 20px;
    border-radius: 15px;
    width: min(100%, 340px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
    border: 1px solid rgba(255, 255, 255, 0.45);
}

input {
    padding: 10px;
    width: 70%;
    margin-bottom: 10px;
    border: 1px solid #d4a2ff;
    border-radius: 8px;
    outline: none;
}

input:focus {
    border-color: #7c37ff;
    box-shadow: 0 0 8px rgba(124,55,255,0.50);
}

button {
    padding: 10px 16px;
    margin: 5px;
    cursor: pointer;
    border: 0;
    border-radius: 8px;
    color: #fff;
    font-weight: 600;
    background: linear-gradient(135deg, #7c37ff, #ff6adf);
    transition: transform 0.18s ease, box-shadow 0.18s ease, filter 0.18s ease;
    box-shadow: 0 5px 12px rgba(115, 41, 206, .35);
}

button:hover {
    filter: brightness(1.08);
}

button:active {
    transform: scale(1.07);
    box-shadow: 0 8px 16px rgba(115, 41, 206, .4);
}

ul {
    list-style: none;
    padding: 0;
}

li {
    background: #fff;
    margin: 8px 0;
    padding: 10px;
    border-radius: 8px;
    border: 1px solid rgba(156, 107, 255, .35);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.complete-btn {
    background: linear-gradient(135deg, #fc6a8f, #ffa9fd);
    color: #3c0c57;
    padding: 5px 10px;
    border-radius: 6px;
    border: 0;
    font-size: 0.9rem;
    transform: none;
}

p#result {
    font-weight: 700;
    color: #350d70;
    margin-top: 15px;
}