/* Links */
.d3 a {
    display: inline-block;
    font-weight: bold;
    text-decoration: none;
    background: linear-gradient(var(--link-grad-angle),
        var(--link-grad-left) 0%,
        var(--link-grad-right) 50%,
        var(--link-grad-left) 100%);
    background-size: 300% 100%;
    background-position: 0% 50%;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
    will-change: background-position, filter;
    animation: link-gradient-slide var(--link-grad-speed) linear infinite;
    transition: filter 200ms ease, opacity 200ms ease;
}

.d3 a:hover,
.d3 a:focus {
    filter: brightness(1.1);
    outline: none;
    text-decoration: underline;
}

.d3 a:visited {
    color: var(--link-visited);
}

/* Social icons */
.socials {
    display: flex;
    justify-content: center;
    align-items: center;
    animation: fly-in 1.5s ease-out;
    margin: 50px 0;
}

.socials .icon-content {
    margin: 0 10px;
    position: relative;
}

.socials .icon-content .tooltip {
    position: absolute;
    top: -30px;
    left: 50%;
    transform: translateX(-50%);
    color: var(--text-p);
    padding: 6px 10px;
    border-radius: 5px;
    opacity: 0;
    visibility: hidden;
    font-size: 14px;
    transition: all 0.3s ease;
}

.socials .icon-content:hover .tooltip {
    opacity: 1;
    visibility: visible;
    top: -50px;
}

.socials .icon-content a {
    position: relative;
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    color: var(--social-icon-color);
    background-color: var(--social-icon-bg);
    transition: all 0.3s ease-in-out;
}

.socials .icon-content a:hover {
    box-shadow: 3px 2px 45px 0px var(--shadow-dark);
}

.socials .icon-content a svg {
    position: relative;
    z-index: 1;
    width: 30px;
    height: 30px;
}

.socials .icon-content a:hover {
    color: white;
}

.socials .icon-content a .filled {
    position: absolute;
    top: auto;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 0;
    background-color: var(--button-bg);
    transition: all 0.3s ease-in-out;
}

.socials .icon-content a:hover .filled {
    height: 100%;
}

.socials .icon-content a[data-social="github"] .filled,
.socials .icon-content a[data-social="github"] ~ .tooltip {
    background-color: var(--social-github-bg);
}

.socials .icon-content a[data-social="instagram"] .filled,
.socials .icon-content a[data-social="instagram"] ~ .tooltip {
    background: linear-gradient(45deg,
        var(--instagram-stop-1),
        var(--instagram-stop-2),
        var(--instagram-stop-3),
        var(--instagram-stop-4),
        var(--instagram-stop-5),
        var(--instagram-stop-6));
}

.socials .icon-content a[data-social="youtube"] .filled,
.socials .icon-content a[data-social="youtube"] ~ .tooltip {
    background-color: var(--social-youtube);
}

/* Buttons */
.gh-button {
    font-size: 1.5rem;
    text-transform: uppercase;
    padding: 10px 20px;
    border-radius: 10px;
    border: 2px solid var(--accent-cyan);
    background: transparent;
    box-shadow: 3px 3px var(--accent-cyan);
    cursor: pointer;
    margin: 35px 0;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    -webkit-tap-highlight-color: transparent;
    color: transparent;
    background-image: linear-gradient(var(--link-grad-angle),
        var(--link-grad-left) 0%,
        var(--link-grad-right) 50%,
        var(--link-grad-left) 100%);
    background-size: 300% 100%;
    background-position: 0% 50%;
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: link-gradient-slide var(--link-grad-speed) linear infinite;
    transition: filter 160ms ease, box-shadow 160ms ease;
}

.gh-button:active {
    box-shadow: none;
    transform: translate(3px, 3px);
}

.gh-button:hover,
.gh-button:focus {
    filter: brightness(1.08);
    outline: none;
}

.gh-button.glow {
    text-shadow: 0 0 8px rgba(255,255,255,0.06),
                 0 0 20px rgba(0,180,255,0.12),
                 0 0 32px rgba(255,60,60,0.08);
}

#image_animation {
    cursor: pointer;
    transition: transform 0.2s ease, filter 0.2s ease;
    user-select: none;
}