:root {
    --background-color: #f0f2f5;
    --main-color: #ffffff;
    --accent-color: #ff7f50; /* Coral */
    --text-color: #333333;
    --shadow-color: rgba(0, 0, 0, 0.1);
    --ball-text-color: #ffffff;
}

[data-theme="dark"] {
    --background-color: #1a1a1a;
    --main-color: #2d2d2d;
    --accent-color: #ff9f75; /* Lighter Coral for contrast */
    --text-color: #e0e0e0;
    --shadow-color: rgba(0, 0, 0, 0.5);
    --ball-text-color: #ffffff;
}

* {
    transition: background-color 0.3s, color 0.3s;
}

body {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background-color: var(--background-color);
    font-family: 'Poppins', sans-serif;
    margin: 0;
    overflow: hidden;
}

.lotto-machine {
    text-align: center;
    background-color: var(--main-color);
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 10px 30px var(--shadow-color);
    width: 90%;
    max-width: 500px;
    position: relative;
    z-index: 1;
}

h1 {
    color: var(--text-color);
    margin-bottom: 30px;
    font-size: 2.5rem;
}

.numbers-display {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 40px;
    flex-wrap: wrap;
    min-height: 60px;
}

.number-ball {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    color: var(--ball-text-color);
    font-size: 1.8rem;
    font-weight: bold;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

#generate-btn {
    background-color: var(--accent-color);
    color: white;
    border: none;
    padding: 15px 30px;
    font-size: 1.2rem;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 5px 15px var(--shadow-color);
    font-weight: 600;
}

#generate-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px var(--shadow-color);
    filter: brightness(1.1);
}

#generate-btn:active {
    transform: translateY(0);
}

.theme-toggle {
    position: fixed;
    top: 20px;
    right: 20px;
    background: var(--main-color);
    border: none;
    padding: 10px;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    font-size: 1.5rem;
    cursor: pointer;
    box-shadow: 0 4px 10px var(--shadow-color);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 10;
    transition: transform 0.3s ease;
}

.theme-toggle:hover {
    transform: rotate(15deg) scale(1.1);
}

/* Responsive Design */
@media (max-width: 480px) {
    .number-ball {
        width: 45px;
        height: 45px;
        font-size: 1.3rem;
    }

    h1 {
        font-size: 1.8rem;
    }

    .lotto-machine {
        padding: 30px 20px;
    }
}