/* Theme Toggle Button */
.theme-toggle {
    background: none;
    border: none;
    color: var(--text-color);
    font-size: 1.2rem;
    cursor: pointer;
    padding: 0.5rem;
    margin-left: 1rem;
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    background-color: var(--card-bg);
}

.theme-toggle:hover {
    background-color: var(--card-hover-bg);
    transform: translateY(-2px);
}

.theme-toggle:focus {
    outline: none;
    box-shadow: 0 0 0 2px var(--accent-color);
}

/* For light theme */
.light-theme .theme-toggle i.fa-moon {
    display: none;
}

.light-theme .theme-toggle i.fa-sun {
    display: inline-block;
}

/* For dark theme */
.theme-toggle i.fa-sun {
    display: none;
}

.theme-toggle i.fa-moon {
    display: inline-block;
}

/* For high-contrast theme */
.high-contrast-theme .theme-toggle i.fa-moon,
.high-contrast-theme .theme-toggle i.fa-sun {
    display: none;
}

.high-contrast-theme .theme-toggle i.fa-adjust {
    display: inline-block;
}

.theme-toggle i.fa-adjust {
    display: none;
}

/* Theme transition */
body, body * {
    transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}