@import url('https://fonts.googleapis.com/css2?family=Nanum+Pen+Script&family=Orbit&display=swap');

:root {
    --bg-color: #1a1a1d;
    --text-color: #f0f0f0;
    --card-bg-color: #2c2c34;
    --title-color: #82aaff;
    --display-bg-color: #111;
    --display-border-color: #444;
    --ball-text-color: #111;
    --plus-color: #82aaff;
    --btn-bg-gradient: linear-gradient(145deg, #82aaff, #6a88cc);
    --btn-text-color: #fff;
    --btn-shadow-color: rgba(130, 170, 255, 0.3);
    --noise-opacity: 0.05;
}

body.light-mode {
    --bg-color: #f0f2f5;
    --text-color: #333;
    --card-bg-color: #ffffff;
    --title-color: #d61c1c;
    --display-bg-color: #e9e9e9;
    --display-border-color: #ccc;
    --ball-text-color: #fff;
    --plus-color: #d61c1c;
    --btn-bg-gradient: linear-gradient(145deg, #ff4d4d, #d61c1c);
    --btn-text-color: #fff;
    --btn-shadow-color: rgba(255, 77, 77, 0.4);
    --noise-opacity: 0;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: 'Orbit', sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    margin: 0;
    transition: background-color 0.3s, color 0.3s;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 800 800' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)' opacity='var(--noise-opacity)'/%3E%3C/svg%3E");
}

.lotto-machine {
    background: var(--card-bg-color);
    border-radius: 20px;
    padding: 30px 40px;
    text-align: center;
    box-shadow: 
        0 10px 20px rgba(0, 0, 0, 0.2),
        0 6px 6px rgba(0, 0, 0, 0.15);
    width: 90%;
    max-width: 500px;
    transition: background-color 0.3s;
}

h1 {
    font-family: 'Nanum Pen Script', cursive;
    font-size: 3rem;
    color: var(--title-color);
    margin-top: 0;
    margin-bottom: 25px;
    text-shadow: 0 0 10px var(--title-color), 0 0 20px var(--title-color);
    transition: color 0.3s, text-shadow 0.3s;
}

.numbers-display {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
    min-height: 80px;
    margin-bottom: 30px;
    background-color: var(--display-bg-color);
    border-radius: 10px;
    padding: 20px;
    border: 1px solid var(--display-border-color);
    transition: background-color 0.3s, border-color 0.3s;
}

.number-ball {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--ball-text-color);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2), inset 0 -4px 5px rgba(0,0,0,0.1);
    animation: pop-in 0.5s ease-out;
    transition: transform 0.2s, background-color 0.3s;
}

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

.numbers-display > div {
    color: var(--text-color);
}


@keyframes pop-in {
    from {
        transform: scale(0);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

#generate-btn {
    background: var(--btn-bg-gradient);
    border: none;
    border-radius: 10px;
    padding: 15px 30px;
    font-size: 1.2rem;
    font-family: 'Orbit', sans-serif;
    color: var(--btn-text-color);
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 5px 15px var(--btn-shadow-color), 0 2px 5px rgba(0,0,0,0.2);
}

#generate-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px var(--btn-shadow-color), 0 4px 8px rgba(0,0,0,0.3);
}

#generate-btn:active {
    transform: translateY(0);
    box-shadow: 0 5px 15px var(--btn-shadow-color), 0 2px 5px rgba(0,0,0,0.2);
}

#theme-toggle-btn {
    position: absolute;
    top: 20px;
    right: 20px;
    background: var(--card-bg-color);
    border: 1px solid var(--display-border-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    cursor: pointer;
    font-size: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    color: var(--text-color);
    transition: all 0.3s ease;
}

#theme-toggle-btn:hover {
    transform: scale(1.1);
}