:root {
    --royal-blue: #003399;     /* Primary (Background) */
    --metallic-gold: #D4AF37;  /* Accent / Highlight */
    --white: #FFFFFF;          /* Neutral (Text / Background) */
    --charcoal-black: #1A1A1A; /* Dark Accent (Optional) */
    --light-gray: #f5f7fa;     /* Light blue-gray for readability */
}

.featured-works-section {
    padding: 80px 15px;
    background-color: var(--white);
    text-align: center;
}

.featured-container {
    max-width: 1400px;
    margin: 0 auto;
}

.section-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 30px;
}

.section-title .gold-text {
    color: var(--metallic-gold);
}

/* Filtering menu */
.filter-menu {
    margin-bottom: 40px;
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
}

.filter-btn {
    background: none;
    border: 2px solid var(--charcoal-black);
    padding: 8px 15px;
    color: var(--charcoal-black);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    text-transform: uppercase;
    transition: all 0.3s ease;
    border-radius: 4px;
}

.filter-btn.active,
.filter-btn:hover {
    background-color: var(--metallic-gold);
    color: var(--white);
    border-color: var(--metallic-gold);
}

/* Grid container */
.project-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 15px; /* small gap for spacing */
}

/* Grid item */
.project-item {
    position: relative;
    cursor: pointer;
    overflow: hidden;
    border-radius: 6px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s ease, opacity 0.5s ease;
    opacity: 1;
}

/* Hide with fade and scale */
.project-item.hidden {
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.5s ease;
}

/* Image */
.project-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
    display: block;
    transition: transform 0.3s ease;
}

/* Overlay */
.project-overlay {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background-color: rgba(0,0,0,0.4);
    opacity: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: opacity 0.3s ease;
    color: var(--white);
    padding: 20px;
    text-align: center;
}

.overlay-content h4 {
    margin: 0 0 8px 0;
    font-size: 1.2rem;
    font-weight: 600;
}

.overlay-content p {
    margin: 0;
    font-size: 0.9rem;
    color: var(--metallic-gold);
}

/* Show overlay and zoom image on hover */
.project-item:hover .project-overlay {
    opacity: 1;
}

.project-item:hover .project-image {
    transform: scale(1.05);
}

/* Responsive adjustments */
@media (max-width: 1200px) {
    .project-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .project-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .project-grid {
        grid-template-columns: 1fr;
    }
}

/* Bounce-in-top animation */
@-webkit-keyframes bounce-in-top {
    0% {
        -webkit-transform: translateY(-500px);
                transform: translateY(-500px);
        -webkit-animation-timing-function: ease-in;
                animation-timing-function: ease-in;
        opacity: 0;
    }
    38% {
        -webkit-transform: translateY(0);
                transform: translateY(0);
        -webkit-animation-timing-function: ease-out;
                animation-timing-function: ease-out;
        opacity: 1;
    }
    55% {
        -webkit-transform: translateY(-65px);
                transform: translateY(-65px);
        -webkit-animation-timing-function: ease-in;
                animation-timing-function: ease-in;
    }
    72% {
        -webkit-transform: translateY(0);
                transform: translateY(0);
        -webkit-animation-timing-function: ease-out;
                animation-timing-function: ease-out;
    }
    81% {
        -webkit-transform: translateY(-28px);
                transform: translateY(-28px);
        -webkit-animation-timing-function: ease-in;
                animation-timing-function: ease-in;
    }
    90% {
        -webkit-transform: translateY(0);
                transform: translateY(0);
        -webkit-animation-timing-function: ease-out;
                animation-timing-function: ease-out;
    }
    95% {
        -webkit-transform: translateY(-8px);
                transform: translateY(-8px);
        -webkit-animation-timing-function: ease-in;
                animation-timing-function: ease-in;
    }
    100% {
        -webkit-transform: translateY(0);
                transform: translateY(0);
        -webkit-animation-timing-function: ease-out;
                animation-timing-function: ease-out;
    }
}

@keyframes bounce-in-top {
    0% {
        transform: translateY(-500px);
        animation-timing-function: ease-in;
        opacity: 0;
    }
    38% {
        transform: translateY(0);
        animation-timing-function: ease-out;
        opacity: 1;
    }
    55% {
        transform: translateY(-65px);
        animation-timing-function: ease-in;
    }
    72% {
        transform: translateY(0);
        animation-timing-function: ease-out;
    }
    81% {
        transform: translateY(-28px);
        animation-timing-function: ease-in;
    }
    90% {
        transform: translateY(0);
        animation-timing-function: ease-out;
    }
    95% {
        transform: translateY(-8px);
        animation-timing-function: ease-in;
    }
    100% {
        transform: translateY(0);
        animation-timing-function: ease-out;
    }
}

/* Class to trigger the bounce-in animation */
.bounce-in-top {
    -webkit-animation: bounce-in-top 1.1s cubic-bezier(0.785, 0.135, 0.150, 0.860) both;
            animation: bounce-in-top 1.1s cubic-bezier(0.785, 0.135, 0.150, 0.860) both;
}