:root {
    --primary-color-dark: oklch(69.86% 0.277 301.35);
    --accent-color-dark: oklch(78.29% 0.25 322.41);
    --background-color-dark: oklch(34.34% 0.047 287.63);
    --card-background-dark: oklch(96.34% 0.007 292.55 / 0.5);
    --text-color-dark: oklch(98.39% 0.003 301.9);
    --shadow-color-dark: oklch(27.42% 0.047 287.63);

    --primary-color-light: oklch(55.86% 0.277 301.35);
    --accent-color-light: oklch(68.29% 0.25 322.41);
    --background-color-light: oklch(95.34% 0.047 287.63);
    --card-background-light: oklch(100% 0 0 / 0.5);
    --text-color-light: oklch(28.39% 0.003 301.9);
    --shadow-color-light: oklch(87.42% 0.047 287.63);

    --primary-color: var(--primary-color-dark);
    --accent-color: var(--accent-color-dark);
    --background-color: var(--background-color-dark);
    --card-background: var(--card-background-dark);
    --text-color: var(--text-color-dark);
    --shadow-color: var(--shadow-color-dark);
}

body.light-mode {
    --primary-color: var(--primary-color-light);
    --accent-color: var(--accent-color-light);
    --background-color: var(--background-color-light);
    --card-background: var(--card-background-light);
    --text-color: var(--text-color-light);
    --shadow-color: var(--shadow-color-light);
}

body {
    font-family: 'Poppins', sans-serif;
    display: grid;
    place-content: center;
    min-height: 100vh;
    background-color: var(--background-color);
    color: var(--text-color);
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 800 800' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.7' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
    transition: background-color 0.3s ease, color 0.3s ease;
}

.card {
    width: 350px;
    padding: 2rem;
    border-radius: 1.5rem;
    background: var(--card-background);
    backdrop-filter: blur(10px);
    border: 1px solid oklch(96.34% 0.007 292.55 / 0.8);
    box-shadow: 0 20px 30px -15px var(--shadow-color);
    text-align: center;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

header h1 {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 0;
    color: var(--primary-color);
}

.lotto-container {
    margin-bottom: 2rem;
}

#generate-btn {
    background-color: var(--accent-color);
    color: var(--text-color);
    border: none;
    padding: 1rem 2rem;
    border-radius: 0.75rem;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 5px 15px -5px var(--accent-color);
}

#generate-btn:hover,
#generate-btn:focus {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px -8px var(--accent-color);
    filter: brightness(1.1);
}

.theme-switch-wrapper {
    display: flex;
    align-items: center;
}

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

.theme-switch input {
    display:none;
}

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

.slider:before {
    background-color: #fff;
    bottom: 4px;
    content: "";
    height: 26px;
    left: 4px;
    position: absolute;
    transition: .4s;
    width: 26px;
}

input:checked + .slider {
    background-color: var(--accent-color);
}

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

.slider.round {
    border-radius: 34px;
}

.slider.round:before {
    border-radius: 50%;
}