* {
    box-sizing: border-box;
}

body,
html {
    margin: 0;
    padding: 0;
    height: 100%;
    background: #f9f9f9;
    color: #333;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
    transition: background-color 0.3s, color 0.3s;
    line-height: 1.5;
}

header {
    background-color: #e9ecef;
    border-bottom: 1px solid #dee2e6;
    width: 100%;
}

.header-content-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    padding: 0.45rem 1rem;
    max-width: 1200px;
    margin: 0 auto;
}

.site-title {
    font-size: 1.5rem;
    font-weight: bold;
    color: #343a40;
}

#darkModeToggle {
    background: none;
    border: 1px solid #ccc;
    border-radius: 20px;
    padding: 0.5rem 0.8rem;
    cursor: pointer;
    line-height: 1;
    transition: background-color 0.3s, border-color 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
}

#darkModeToggle svg {
    width: 1.2em;
    height: 1.2em;
    fill: currentColor;
    transition: filter 0.3s ease;
    }
    
    body.dark-mode #darkModeToggle svg[src*="light-theme.svg"] {
        filter: invert(1) brightness(2) grayscale(1) contrast(100);
}

#darkModeToggle:hover {
    border-color: #888;
}

body.dark-mode {
    background-color: #1a1a1a;
    color: #dcdcdc;
}

body.dark-mode header {
    background-color: #2c2c2c;
    border-bottom: 1px solid #444;
}

body.dark-mode .site-title {
    color: #f8f9fa;
}

body.dark-mode #darkModeToggle {
    border-color: #555;
}

body.dark-mode #darkModeToggle:hover {
    border-color: #777;
}

body.dark-mode a {
    color: #8ab4f8;
}

body.dark-mode a:hover {
    color: #adcffc;
}

.content-wrapper {
    flex: 1;
    display: flex;
    flex-direction: column;
    width: 100%;
}

main {
    flex: 1;
}

footer {
    width: 100%;
    background: #f1f1f1;
    padding: 1rem;
    font-size: 0.9rem;
    text-align: center;
    border-top: 1px solid #ddd;
    margin-top: auto;
}

body.dark-mode footer {
    background-color: #252525;
    border-top: 1px solid #444;
    color: #aaa;
}

#header-logo-image {
    height: 35px;
    display: block;
}

#header-site-title {
    flex-grow: 1;
    text-align: center;
    margin: 0 1rem;
}

code {
    font-family: inherit;
    font-size: inherit;
    background-color: rgba(0, 0, 0, 0.05);
    padding: 0.1em 0.3em;
    border-radius: 3px;
}

body.dark-mode code {
    background-color: rgba(255, 255, 255, 0.1);
}