/* Skeleton Loading Animation */
@keyframes shimmer {
    0% {
        background-position: -1000px 0;
    }

    100% {
        background-position: 1000px 0;
    }
}

.skeleton {
    background: linear-gradient(90deg, #1a1a1a 25%, #2a2a2a 50%, #1a1a1a 75%);
    background-size: 1000px 100%;
    animation: shimmer 2s infinite;
    border-radius: 8px;
}

/* Enhanced project card hover - Spotlight & Border Glow */
.project-card {
    position: relative;
    background-color: rgba(18, 18, 18, 0.4);
    /* Ensure dark background */
    border: 1px solid rgba(255, 255, 255, 0.05);
    /* Subtle base border */
    overflow: hidden;
    /* Keep effects inside */
    isolation: isolate;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

/* Inner Spotlight Effect - Increased Visibility */
.project-card::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    background: radial-gradient(800px circle at var(--mouse-x) var(--mouse-y),
            rgba(255, 255, 255, 0.1),
            transparent 40%);
    opacity: 0;
    transition: opacity 0.5s ease;
    pointer-events: none;
    z-index: 1;
}

/* Make sure content stays above the spotlight */
.project-card>* {
    position: relative;
    z-index: 10;
}

/* Border Glow Effect - Increased Intensity */
.project-card::after {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: inherit;
    padding: 1px;
    /* The border width */
    background: radial-gradient(600px circle at var(--mouse-x) var(--mouse-y),
            rgba(217, 255, 0, 1),
            /* Maximum Intensity Primary Color */
            transparent 40%);
    -webkit-mask:
        linear-gradient(#fff 0 0) content-box,
        linear-gradient(#fff 0 0);
    mask:
        linear-gradient(#fff 0 0) content-box,
        linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0;
    transition: opacity 0.5s ease;
    pointer-events: none;
    z-index: 20;
    /* On top of everything */
}

/* Show effects on hover */
.project-card:hover::before,
.project-card:hover::after {
    opacity: 1;
}

/* Lift card slightly on hover for depth */
.project-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 40px -10px rgba(0, 0, 0, 0.5);
    border-color: rgba(255, 255, 255, 0.1);
}

/* Ensure image stays rounded */
.project-card>div:first-child {
    border-radius: 1.5rem 1.5rem 0 0;
    overflow: hidden;
    transform: translateZ(0);
    /* Hardware acceleration fix */
}

.project-card>div:first-child img {
    border-radius: 1.5rem 1.5rem 0 0;
}

/* Ripple effect for buttons */
.btn-ripple {
    position: relative;
    overflow: hidden;
}

.btn-ripple::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn-ripple:active::after {
    width: 300px;
    height: 300px;
    transition: width 0s, height 0s;
}

/* Floating Back to Top Button */
.floating-back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: 50;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.floating-back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.floating-back-to-top:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 40px rgba(217, 255, 0, 0.3);
}

/* Hide floating button on mobile to avoid blocking content */
@media (max-width: 768px) {
    .floating-back-to-top {
        bottom: 1rem;
        right: 1rem;
        transform: scale(0.9);
    }
}

/* Overview Card - Spotlight Effect */
.overview-card {
    position: relative;
    /* overflow: visible; - Required for popups */
    transition: box-shadow 0.3s ease, border-color 0.3s ease, margin 0.3s;
    /* Initialize CSS variables for spotlight effect */
    --mouse-x: 50%;
    --mouse-y: 50%;
}

/* Spotlight Effect */
.overview-card::before {
    content: '';
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    border-radius: inherit;
    background: radial-gradient(800px circle at var(--mouse-x) var(--mouse-y),
            rgba(255, 255, 255, 0.06),
            transparent 40%);
    opacity: 0;
    transition: opacity 0.5s ease;
    pointer-events: none;
    z-index: 1;
    /* Above background but below content */
}

/* Border Glow Effect */
.overview-card::after {
    content: '';
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    border-radius: inherit;
    padding: 1px;
    background: radial-gradient(600px circle at var(--mouse-x) var(--mouse-y),
            rgba(217, 255, 0, 0.4),
            /* Primary color with lower opacity */
            transparent 40%);
    -webkit-mask:
        linear-gradient(#fff 0 0) content-box,
        linear-gradient(#fff 0 0);
    mask:
        linear-gradient(#fff 0 0) content-box,
        linear-gradient(#fff 0 0);
    -webkit-mask-composite: xor;
    mask-composite: exclude;
    opacity: 0;
    transition: opacity 0.5s ease;
    pointer-events: none;
    z-index: 20;
}

.overview-card:hover::before,
.overview-card:hover::after {
    opacity: 1;
}

/* Lift on hover */
.overview-card:hover {
    box-shadow: 0 20px 50px -12px rgba(0, 0, 0, 0.7);
    border-color: rgba(255, 255, 255, 0.2);
    z-index: 10;
    /* Bring to front on hover */
}

/* Ensure content is above spotlight */
.overview-card>* {
    position: relative;
    z-index: 10;
}