/* =========================================
   LOCKED GLOBAL & TOPNAV (STAYS THE SAME)
   ========================================= */
body {
    font-family: "Poppins", sans-serif;
    background-color: #000;
    margin: 0;
    color: #f2f2f2;
    overflow-x: hidden;
}

.topnav {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    background: #000;
    border-bottom: 1px solid #222;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.topnav a {
    color: #f2f2f2;
    padding: 16px 20px;
    text-decoration: none;
    transition: 0.3s;
    font-size: 14px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.topnav a:hover {
    color: #fff;
    background: rgba(255, 255, 255, 0.1);
}

/* =========================================
   GALLERY & CONTENT STYLES
   ========================================= */

/* Header Section */
.header {
    padding: 60px 20px 20px;
    text-align: center;
}

.header h1 {
    font-size: 2.5rem;
    text-transform: uppercase;
    letter-spacing: 3px;
    margin-bottom: 10px;
}

/* Gallery Grid */
#gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 25px;
    padding: 40px;
    max-width: 1400px;
    margin: 0 auto;
}

/* Card Style */
.card {
    background: #000;
    border-radius: 16px;
    overflow: hidden;
    position: relative;
    transition: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid #222;
}

.card:hover {
    transform: translateY(-10px) scale(1.02);
    border-color: #444;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

/* Image: always square */
.card img {
    width: 100%;
    aspect-ratio: 1 / 1; 
    object-fit: cover;   
    display: block;
    transition: 0.4s;
}

.card:hover img {
    filter: brightness(0.8);
}

/* Cinematic Overlay for Cards */
.card::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.9) 0%, rgba(0,0,0,0.4) 40%, transparent 100%);
    pointer-events: none;
}

/* Info Section inside Card */
.info {
    position: absolute;
    bottom: 0;
    width: 100%;
    padding: 20px;
    z-index: 2;
    box-sizing: border-box;
}

/* Filename/Title */
.filename {
    font-size: 15px;
    font-weight: 600;
    color: #fff;
    margin-bottom: 10px;
    word-break: break-word;
    text-shadow: 0 2px 4px rgba(0,0,0,0.5);
}

/* Glass Share Button */
.share-btn {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 10px 18px;
    color: white;
    border-radius: 8px;
    cursor: pointer;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    transition: 0.3s;
    font-size: 13px;
    font-family: "Poppins", sans-serif;
    text-transform: uppercase;
    letter-spacing: 1px;
    width: 100%;
}

.share-btn:hover {
    background: white;
    color: black;
}

/* Footer */
.footer {
    color: #888;
    text-align: center;
    padding: 60px 20px;
    border-top: 1px solid #222;
    margin-top: 40px;
}

.footer a {
    color: #fff;
    font-size: 2rem;
    display: inline-block;
    margin: 10px;
    transition: 0.3s;
}

.footer a:hover {
    transform: scale(1.2);
}

/* =========================================
   RESPONSIVE DESIGN
   ========================================= */

/* Tablet */
@media (max-width: 1024px) {
    #gallery {
        grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
        padding: 20px;
        gap: 15px;
    }
}

/* Mobile (Locked TopNav & Grid Adjustments) */
@media (max-width: 768px) {
    .topnav a {
        font-size: 12px;
        padding: 12px 10px;
    }

    #gallery {
        grid-template-columns: 1fr; /* Single column on phones for impact */
        padding: 15px;
    }

    .header h1 {
        font-size: 1.8rem;
    }

    .card:hover {
        transform: none; /* Disable hover lift on mobile for better scrolling */
    }
}