html,
body {
    margin: 0;
    padding: 0;
    overflow: hidden;
    transition: background-color 0.5s, color 0.5s;
}

/* header */

#header {
    width: 100%;
    height: 8vh;
    display: flex;
    justify-content: flex-end;
    align-items: center;
    flex-direction: row;
}

.button {
    position: absolute;
    top: 16px;
    left: 16px;
    padding: 8px 12px;
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 6px;
    border-radius: 8px;
    cursor: pointer;
    border: 1px solid;
    transition: background 0.2s, transform 0.2s;
    background-color: white;
    color: black;
    border-color: #ccc;
}

.button:hover {
    background-color: #f0f0f0;
    transform: scale(1.05);
}

.button svg {
    width: 18px;
    height: 18px;
    stroke: currentColor;
}

/* "Dark Mode" and "Light Mode" */

body.light-mode {
    background-color: #ffffff;
    color: #000000;
}

body.dark-mode {
    background-color: #121212;
    color: #ffffff;
}

.toggle-container {
    position: relative;
    width: 60px;
    height: 30px;
    margin: auto 3.5%;
}

input[type="checkbox"] {
    display: none;
}

.toggle-label {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    height: 100%;
    background-color: #f0f0f0;
    border-radius: 30px;
    padding: 0 5px;
    cursor: pointer;
    transition: background-color 0.5s;
}

input[type="checkbox"]:checked+.toggle-label {
    background-color: #1a1a1a;
}

.sun,
.moon {
    font-size: 20px;
    transition: transform 0.5s, opacity 0.5s;
    opacity: 0;
}

.sun {
    opacity: 1;
}

.moon {
    opacity: 0;
}

input[type="checkbox"]:checked+.toggle-label .sun {
    transform: translateX(30px);
    opacity: 0;
}

input[type="checkbox"]:checked+.toggle-label .moon {
    transform: translateX(-30px);
    opacity: 1;
}

body.light-mode .button {
    position: absolute;
    top: 16px;
    left: 16px;
    padding: 8px 12px;
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: 6px;
    border-radius: 8px;
    cursor: pointer;
    border: 1px solid;
    transition: background 0.2s, transform 0.2s;
    background-color: white;
    color: black;
    border-color: #ccc;
}

body.light-mode .button:hover {
    background-color: #f0f0f0;
    transform: scale(1.05);
}

body.dark-mode .button {
    background-color: #1a1a1a;
    color: white;
    border-color: #444;
}

body.dark-mode .button:hover {
    background-color: #333;
}