:root {
    --footer-text-color: rgba(255, 255, 255, 0.6);
    --footer-text-hovercolor: rgba(255, 255, 255, 0.8);
    --footer-icon-size: 16px;
    --footer-button-size: 32px;
    --footer-transition-duration: 0.3s;
}

[data-theme="light"] {
    --footer-text-color: rgba(0, 0, 0, 0.7);
    --footer-text-hovercolor: rgba(0, 0, 0, 0.6);
}

.footer_container {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    padding: 16px 45px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 10;
    box-sizing: border-box;
    transition: opacity var(--footer-transition-duration) ease;
}

@media (max-width: 767px) {
    .footer_container {
        z-index: 100;
    }
}


.footer_container.faded {
    opacity: 0.5;
}

.footer_controls {
    display: flex;
    align-items: center;
    gap: 16px;
}

.footer_button {
    background: none;
    border: none;
    color: var(--footer-text-color);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 6px;
    transition: all var(--footer-transition-duration) ease;
    border-radius: 50%;
    width: var(--footer-button-size);
    height: var(--footer-button-size);
    position: relative;
}

.footer_button:hover {
    color: var(--footer-text-hovercolor);
    background: rgba(255, 255, 255, 0.1);
}

.footer_button svg {
    width: var(--footer-icon-size);
    height: var(--footer-icon-size);
    transition: transform var(--footer-transition-duration) ease;
}

.footer_button:hover svg {
    transform: rotate(15deg);
}

.theme_toggle {
    margin-left: -5px;
}

/* Theme toggle specific styles */
.theme_toggle .moon_icon {
    display: none;
    position: absolute;
}

.theme_toggle .sun_icon {
    display: block;
    position: absolute;
}

.theme_toggle[data-theme="light"] .moon_icon {
    display: block;
}

.theme_toggle[data-theme="light"] .sun_icon {
    display: none;
}

/* Copyright button styles */
.copyright_button {
    overflow: hidden;
    border-radius: 16px;
    justify-content: flex-start;
    width: var(--footer-button-size);
    transition: width var(--footer-transition-duration) ease, 
                max-width var(--footer-transition-duration) ease, 
                border-radius var(--footer-transition-duration) ease;
}

.copyright_button.expanded {
    width: auto;
    max-width: min-content;
    border-radius: 16px;
}

.copyright_icon {
    font-size: 14px;
    min-width: 20px;
    display: flex;
    justify-content: center;
}

.copyright_text {
    opacity: 0;
    max-width: 0;
    width: 0;
    overflow: hidden;
    white-space: nowrap;
    font-size: 14px;
    margin-left: 0;
}

.copyright_button.expanded .copyright_text {
    opacity: 1;
    width: auto;
    max-width: min-content;
    margin-left: 8px;
}

/* Links button styles */
.links_button {
    overflow: hidden;
    border-radius: 16px;
    justify-content: flex-start;
    width: var(--footer-button-size);
    transition: width var(--footer-transition-duration) ease, 
                border-radius var(--footer-transition-duration) ease;
}

.links_button.expanded {
    width: auto;
    max-width: 200px;
    border-radius: 16px;
}

.links_container {
    display: flex;
    gap: 20px;
    opacity: 0;
    max-width: 0;
    width: 0;
    overflow: hidden;
    white-space: nowrap;
    margin-left: 0;
    padding-right: 8px;
}

.links_button.expanded .links_container {
    opacity: 1;
    width: auto;
    max-width: 180px;
    margin-left: 16px;
}

.plus_icon {
    min-width: var(--footer-icon-size);
    transition: transform var(--footer-transition-duration) ease;
}

.links_button.expanded .plus_icon {
    transform: rotate(45deg);
}

/* ensure plus icon returns to original position when not expanded */
.links_button:not(.expanded) .plus_icon {
    transform: rotate(0deg);
}

/* Views button styles */
.views_button {
    overflow: hidden;
    border-radius: 16px;
    justify-content: flex-start;
    width: var(--footer-button-size);
    transition: width var(--footer-transition-duration) ease, 
                border-radius var(--footer-transition-duration) ease;
}

.views_button.expanded {
    width: auto;
    max-width: 150px;
    border-radius: 16px;
}

.eye_icon {
    min-width: var(--footer-icon-size);
}

.view_counter {
    color: var(--footer-text-color);
    font-size: 14px;
    opacity: 0;
    max-width: 0;
    width: 0;
    overflow: hidden;
    white-space: nowrap;
    margin-left: 0;
}

.views_button.expanded .view_counter {
    opacity: 1;
    width: auto;
    max-width: 120px;
    margin-left: 8px;
}

.footer_link {
    color: var(--footer-text-color);
    text-decoration: none;
    font-size: 14px;
    transition: color var(--footer-transition-duration) ease;
}

.footer_link:hover {
    color: var(--footer-text-hovercolor);
}

.footer_right {
    position: absolute;
    right: 45px;
    bottom: 16px;
}

.scroll_top_button {
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--footer-transition-duration) ease, 
                visibility var(--footer-transition-duration) ease, 
                transform var(--footer-transition-duration) ease;
}

.scroll_top_button.visible {
    opacity: 1;
    visibility: visible;
}

.scroll_top_button:hover .arrow_up_icon {
    transform: translateY(-3px);
}

@media (max-width: 767px) {
    .footer_container {
        padding: 12px 16px;
        justify-content: flex-start;
        align-items: center;
        gap: 0;
        overflow: hidden;
        max-height: 40px;
        margin-bottom: 10px;
    }
    
    .footer_controls {
        gap: 10px;
    }
    
    .footer_button {
        width: 28px;
        height: 28px;
        padding: 4px;
    }
    
    .footer_button svg {
        width: 14px;
        height: 14px;
    }
    
    /* remove hover background effect on mobile */
    .footer_button:hover {
        background: none;
    }
    
    .copyright_button.expanded {
        max-width: min-content;
    }
    
    .links_button.expanded {
        max-width: 160px;
    }
    
    .views_button.expanded {
        max-width: 120px;
    }
    
    .copyright_text,
    .footer_link,
    .view_counter {
        font-size: 13px;
    }
    
    .footer_right {
        right: 16px;
        bottom: 6px;
    }
    
    .scroll_top_button {
        opacity: 1;
        visibility: visible;
    }
}