body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
    background-color: #f0f2f5;
}

.container {
    text-align: center;
    background: white;
    padding: 2rem;
    border-radius: 20px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}

h1 {
    color: #333;
    margin-bottom: 2rem;
}

.dice {
    width: 100px;
    height: 100px;
    background-color: white;
    border: 4px solid #333;
    border-radius: 15px;
    margin: 0 auto 2rem;
    position: relative;
    display: grid;
    grid-template-areas: 
        "a . b"
        "c d e"
        "f . g";
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: repeat(3, 1fr);
    padding: 10px;
    box-sizing: border-box;
    transition: transform 0.1s;
}

.dot {
    width: 18px;
    height: 18px;
    background-color: #333;
    border-radius: 50%;
    visibility: hidden;
    margin: auto;
}

/* Dice values */
.val-1 .dot:nth-child(4) { visibility: visible; grid-area: d; }

.val-2 .dot:nth-child(1) { visibility: visible; grid-area: a; }
.val-2 .dot:nth-child(6) { visibility: visible; grid-area: g; }

.val-3 .dot:nth-child(1) { visibility: visible; grid-area: a; }
.val-3 .dot:nth-child(4) { visibility: visible; grid-area: d; }
.val-3 .dot:nth-child(6) { visibility: visible; grid-area: g; }

.val-4 .dot:nth-child(1) { visibility: visible; grid-area: a; }
.val-4 .dot:nth-child(2) { visibility: visible; grid-area: b; }
.val-4 .dot:nth-child(5) { visibility: visible; grid-area: f; }
.val-4 .dot:nth-child(6) { visibility: visible; grid-area: g; }

.val-5 .dot:nth-child(1) { visibility: visible; grid-area: a; }
.val-5 .dot:nth-child(2) { visibility: visible; grid-area: b; }
.val-5 .dot:nth-child(4) { visibility: visible; grid-area: d; }
.val-5 .dot:nth-child(5) { visibility: visible; grid-area: f; }
.val-5 .dot:nth-child(6) { visibility: visible; grid-area: g; }

.val-6 .dot:nth-child(1) { visibility: visible; grid-area: a; }
.val-6 .dot:nth-child(2) { visibility: visible; grid-area: b; }
.val-6 .dot:nth-child(3) { visibility: visible; grid-area: c; }
.val-6 .dot:nth-child(5) { visibility: visible; grid-area: f; }
.val-6 .dot:nth-child(6) { visibility: visible; grid-area: g; }
.val-6 .dot:nth-child(7) { visibility: visible; grid-area: e; } /* Extra dot for 6 */

#roll-btn {
    padding: 12px 24px;
    font-size: 1.2rem;
    cursor: pointer;
    background-color: #007bff;
    color: white;
    border: none;
    border-radius: 8px;
    transition: background 0.2s;
}

#roll-btn:hover {
    background-color: #0056b3;
}

#roll-btn:disabled {
    background-color: #ccc;
    cursor: not-allowed;
}

#result-text {
    margin-top: 1.5rem;
    font-size: 1.3rem;
    font-weight: bold;
    color: #555;
}

.rolling {
    animation: shake 0.2s infinite;
}

@keyframes shake {
    0% { transform: translate(2px, 1px) rotate(0deg); }
    20% { transform: translate(-1px, -2px) rotate(-1deg); }
    40% { transform: translate(-3px, 0px) rotate(1deg); }
    60% { transform: translate(3px, 2px) rotate(0deg); }
    80% { transform: translate(1px, -1px) rotate(1deg); }
    100% { transform: translate(-1px, 2px) rotate(-1deg); }
}