*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body{
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f4f4f4;
    color: #222;
    line-height: 1.8;
    padding: 20px;
}

header{
    text-align: center;
    margin-bottom: 40px;
}
header h1{
    font-size: 2.5em;
    margin-bottom: 10px;
    color: #2c3e50;
}
header p {
    font-size: 14px;
    color: #555;
}
main{
    display: flex;
    gap: 30px;
    max-width: 1000px;
    margin: auto;
}
article{
    flex: 3;
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.05);
}
article h2 {
    margin-top: 25px;
    color: #34495e;
}
ul{
    margin: 10px 0 20px 20px;
}
blockquote{
    background-color: #ecf0f1;
    border-left: 5px solid #00b894;
    padding: 15px 20px;
    font-style: italic;
    color: #555;
    margin: 20px 0;
}
figure{
    width: 100%;
    border-radius: 10px;
}
figcaption{
    font-size: 12px;
    text-align: right;
    color: #888;
    margin-top: 5px;
}

aside h3 {
    margin-bottom: 10px;
    color: #2c3e50;
}
aside a {
    text-decoration: none;
    color: #00b894;
    margin-right: 8px;
}
aside a:hover{
    text-decoration: underline;
}

footer{
    text-align: center;
    margin-top: 50px;
    padding: 20px 0;
    color: #888;
    font-size: 14px;
}
.fade-in{
    opacity: 0;
    transform: translateY(20px);
    animation: fadeIn 1s ease-out forwards;
}
@keyframes fadeIn { 
    to{
    opacity: 1;
    transform: translateY(0);
    }
}

body.dark {
    background-color: #121212;
    color: #eee;
}
body.dark header h1,
body.dark article h2,
body.dark aside h3 {
    color: #00ffc3;
}
body.dark article,
body.dark aside {
    background-color: #1e1e1e;
    color: #ddd;
}
body.dark blockquote{
    background-color: #2a2a2a;
    border-left-color: #00ffc3;
}

body.dark footer{
    color: #aaa;
}
#darktoogle {
    position: fixed;
    top: 20px;
    right: 20px;
    background: #00ffc3;
    color: #000;
    border: none;
    padding: 10px 15px;
    border-radius: 5px;
    font-weight: bold;
    cursor: pointer;
    z-index: 1000;
}
#darktoogle:hover{
    background: #00c2a0;
}


@media (max-width: 768px){
    main{
        flex-direction: column;
    }
    aside{
        order: -1;
        margin-bottom: 20px;
    }
    article{
        padding: 20px;
    }
    #darkToggle {
        top: 10px;
        right: 10px;
        padding: 8px 12px;
        font-size: 14px;
    }
}