:root {
    --bg-color: #f5f7fa;
    --card-bg: #ffffff;
    --text-main: #2d3436;
    --primary: #0984e3;
    --btn-label: "Passer au Sombre";
}
#theme-toggle:checked ~ .page-wrapper {
    --bg-color: #121212;
    --card-bg: #1e1e1e;
    --text-main: #f5f6fa;
    --primary: #74b9ff;
    --btn-label: "Passer au Clair";
}
#theme-toggle {
    display: none;
}
body {
    margin: 0;
    font-family: sans-serif;
}
.page-wrapper {
    background-color: var(--bg-color);
    color: var(--text-main);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: all 0.3s ease;
}
.card {
    background-color: var(--card-bg);
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    text-align: center;
    max-width: 400px;
}
.btn-toggle {
    display: inline-block;
    background-color: var(--primary);
    color: white;
    padding: 12px 25px;
    border-radius: 50px;
    cursor: pointer;
    font-weight: bold;
    margin-top: 20px;
    transition: transform 0.2s;
}
.btn-toggle::after {
    content: var(--btn-label);
}

.btn-toggle:hover {
    transform: scale(1.05);
}