@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@400;600&display=swap');

:root {
    --bg-color: #f0f0f0;
    --text-color: #333;
    --app-bg-color: #fff;
    --app-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    --heading-color: #333;
    --button-bg-color: #fbc400;
    --button-text-color: #333;
    --button-hover-bg-color: #ffda79;
    --lotto-ball-border-color: #ddd;
    --lotto-ball-bg-color: #fff;
    --lotto-ball-text-color: #000;
}

body.dark-mode {
    --bg-color: #1a1a1a;
    --text-color: white;
    --app-bg-color: #2b2b2b;
    --app-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    --heading-color: #fbc400;
    --button-bg-color: #fbc400;
    --button-text-color: #1a1a1a;
    --button-hover-bg-color: #ffda79;
    --lotto-ball-border-color: #555;
    --lotto-ball-bg-color: #444;
    --lotto-ball-text-color: #fff;
}


body {
    font-family: 'Poppins', sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: background-color 0.3s, color 0.3s;
}

#app {
    text-align: center;
    background: var(--app-bg-color);
    padding: 40px;
    border-radius: 15px;
    box-shadow: var(--app-shadow);
    transition: background-color 0.3s, box-shadow 0.3s;
}

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

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

lotto-ball {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    font-size: 24px;
    font-weight: bold;
    border: 1px solid var(--lotto-ball-border-color);
    animation: appear 0.5s ease-in-out;
    background-color: var(--lotto-ball-bg-color);
    color: var(--lotto-ball-text-color);
    transition: background-color 0.3s, color 0.3s, border-color 0.3s;
}

/* Color classes for lotto balls */
.ball-yellow {
    background-color: #fbc400; /* Yellow */
    color: #000000; /* Black text */
}

.ball-blue {
    background-color: #4A90E2; /* Blue */
    color: #FFFFFF; /* White text */
}

.ball-red {
    background-color: #D0021B; /* Red */
    color: #FFFFFF; /* White text */
}

.ball-gray {
    background-color: #9B9B9B; /* Gray */
    color: #000000; /* Black text */
}

.ball-green {
    background-color: #7ED321; /* Green */
    color: #000000; /* Black text */
}


@keyframes appear {
    from {
        transform: scale(0);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

#generate-btn {
    padding: 15px 30px;
    font-size: 1.2em;
    cursor: pointer;
    background-color: var(--button-bg-color);
    color: var(--button-text-color);
    border: none;
    border-radius: 8px;
    font-weight: 600;
    transition: background-color 0.3s, transform 0.2s;
}

#generate-btn:disabled {
    background-color: #555;
    cursor: not-allowed;
}

#generate-btn:hover:not(:disabled) {
    background-color: var(--button-hover-bg-color);
    transform: translateY(-2px);
}

/* Theme Switcher Styles */
.theme-switch-wrapper {
    position: absolute;
    top: 20px;
    right: 20px;
    display: flex;
    align-items: center;
}

.theme-switch {
    position: relative;
    display: inline-block;
    width: 60px;
    height: 34px;
}

.theme-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #ccc;
    transition: .4s;
    border-radius: 34px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 26px;
    width: 26px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    transition: .4s;
    border-radius: 50%;
}

input:checked + .slider {
    background-color: #2196F3;
}

input:focus + .slider {
    box-shadow: 0 0 1px #2196F3;
}

input:checked + .slider:before {
    transform: translateX(26px);
}