:root {
    --primary-color: #4A90E2;
    --secondary-color: #50E3C2;
    --accent-color: #F5A623;
    --background-color: #F8F8F8;
    --text-color: #333333;
    --card-background: #FFFFFF;
    --shadow-light: rgba(0, 0, 0, 0.1);
    --shadow-deep: rgba(0, 0, 0, 0.2);
    --gradient-start: #6DD5ED;
    --gradient-end: #2193B0;
}

html[data-theme='dark'] {
    --primary-color: #58A6FF;
    --secondary-color: #30B698;
    --accent-color: #F7B731;
    --background-color: #121212;
    --text-color: #E0E0E0;
    --card-background: #1E1E1E;
    --shadow-light: rgba(255, 255, 255, 0.1);
    --shadow-deep: rgba(0, 0, 0, 0.3);
    --gradient-start: #0F2027;
    --gradient-end: #2C5364;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: linear-gradient(to right, var(--gradient-start), var(--gradient-end));
    color: var(--text-color);
    padding: 20px;
    box-sizing: border-box;
}

/* Lotto Generator Component Styling */
lotto-generator {
    display: block;
    background-color: var(--card-background);
    padding: 30px;
    border-radius: 15px;
    box-shadow: 0 10px 30px var(--shadow-deep), 0 5px 15px var(--shadow-light);
    text-align: center;
    max-width: 500px;
    width: 100%;
    box-sizing: border-box;
    transition: all 0.3s ease-in-out;
}

lotto-generator:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px var(--shadow-deep), 0 8px 20px var(--shadow-light);
}

lotto-generator h2 {
    color: var(--primary-color);
    font-size: 2.2em;
    margin-bottom: 25px;
    text-shadow: 1px 1px 2px var(--shadow-light);
}

.numbers-display {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 15px;
    margin-bottom: 30px;
}

.number-ball {
    background: linear-gradient(145deg, var(--secondary-color), #2BBF9D);
    color: white;
    font-size: 1.8em;
    font-weight: bold;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: 0 4px 10px var(--shadow-deep);
    transition: transform 0.2s ease-in-out, background 0.2s ease-in-out;
    animation: fadeIn 0.5s ease-out forwards;
    opacity: 0;
}

.number-ball:nth-child(even) {
    background: linear-gradient(145deg, var(--primary-color), #3A7BD5);
}

.number-ball:hover {
    transform: scale(1.1) rotate(5deg);
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

button {
    background: linear-gradient(to right, var(--accent-color), #F7DC6F);
    color: white;
    border: none;
    padding: 15px 30px;
    font-size: 1.2em;
    border-radius: 8px;
    cursor: pointer;
    box-shadow: 0 5px 15px var(--shadow-light);
    transition: all 0.3s ease-in-out;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: bold;
}

button:hover {
    transform: translateY(-3px) scale(1.02);
    box-shadow: 0 8px 20px var(--shadow-deep);
}

button:active {
    transform: translateY(0) scale(0.98);
    box-shadow: 0 3px 10px var(--shadow-light);
}

/* Responsive Design */
@media (max-width: 600px) {
    lotto-generator {
        padding: 20px;
        margin: 10px;
    }

    lotto-generator h2 {
        font-size: 1.8em;
    }

    .number-ball {
        width: 50px;
        height: 50px;
        font-size: 1.5em;
    }

    button {
        padding: 12px 25px;
        font-size: 1em;
    }
}