[data-theme="dark"] {
    --bg-color: #121212;
    --text-color: #e0e0e0;
    --tertiary-color: #38bdf8; 
    --card-border: #333333;
    --technology-text: #b0b0b0;
    --footer-text: #b0b0b0;
    --shadow: rgba(0, 0, 0, 0.4);
}

.theme-selector {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1000;
}

#theme-button {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 1px solid var(--card-border);
    background-color: var(--bg-color);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 2px 5px var(--shadow);
    position: relative;
    transition: background-color 0.3s ease, border-color 0.3s ease;
    padding: 0;
}

.theme-icon {
    position: absolute;
    transition: opacity 0.3s ease, transform 0.3s ease;
    opacity: 0;
    transform: scale(0.5);
}

#theme-button svg { 
    stroke: var(--text-color); 
}

#theme-button .dark-icon { 
    fill: var(--text-color);
    stroke: none; 
}

body.display-system-icon .system-icon,
body.display-light-icon .light-icon,
body.display-dark-icon .dark-icon {
    opacity: 1;
    transform: scale(1);
}

[data-theme="dark"] #theme-button svg {
    stroke: var(--text-color);
}

[data-theme="dark"] #theme-button .dark-icon {
    fill: var(--text-color);
    stroke: none;
}

[data-theme="dark"] .socialIcon {
    fill: var(--text-color);
}