/* Base */
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
    font-family: 'Satoshi', sans-serif;
    background: #fdfdfd;
    background: radial-gradient(circle at top center, rgba(0,0,0,0.015) 0%, #fdfdfd 80%);
    color: #111;
    -webkit-font-smoothing: antialiased;
}

/* Typography */
h1, h2, h3 { font-weight: 700; letter-spacing: -0.5px; }
a { text-decoration: none; color: inherit; }

/* Layout */
.page-wrapper {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.top-nav {
    padding: 32px 48px;
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(253,253,253,0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(0,0,0,0.03);
}

.back-link {
    font-size: 0.95rem;
    font-weight: 500;
    color: #666;
    transition: color 0.3s ease;
    display: inline-flex;
    align-items: center;
}
.back-link:hover { color: #000; }

.work-header {
    text-align: center;
    padding: 80px 24px 70px;
}

.work-title {
    font-size: clamp(3rem, 6vw, 4.5rem);
    letter-spacing: -2.5px;
    margin-bottom: 12px;
    color: #000;
}

.work-sub {
    font-size: 1.1rem;
    font-weight: 400;
    color: #777;
    letter-spacing: 0.5px;
}

/* Grid */
.grid-section {
    flex: 1;
    padding: 0 48px 100px;
}

.grid-container {
    max-width: 1320px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

/* Card */
.project-card {
    display: flex;
    flex-direction: column;
    background: #fff;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.04);
    border: 1px solid rgba(0,0,0,0.03);
    cursor: pointer;
    
    /* Animation initial state */
    opacity: 0;
    transform: translateY(60px) scale(0.96);
    will-change: transform, opacity;
    transition: transform 0.4s cubic-bezier(0.22, 1, 0.36, 1), box-shadow 0.4s ease;
}

.project-card.visible {
    opacity: 1;
    transform: translateY(0) scale(1);
    /* The individual transitions for fade-in are applied via JS delay and CSS class */
    transition: opacity 0.8s cubic-bezier(0.22, 1, 0.36, 1), 
                transform 0.8s cubic-bezier(0.22, 1, 0.36, 1),
                box-shadow 0.4s ease;
}

/* Hover interaction */
.project-card.visible:hover {
    transform: translateY(-10px) scale(1);
    box-shadow: 0 24px 48px rgba(0,0,0,0.08);
}

.card-img-wrap {
    width: 100%;
    aspect-ratio: 4 / 3;
    overflow: hidden;
    position: relative;
    background: #f0f0f0;
}

.card-img-wrap img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s cubic-bezier(0.22, 1, 0.36, 1);
    display: block;
}

.project-card.visible:hover .card-img-wrap img {
    transform: scale(1.06);
}

.card-content {
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    position: relative;
    background: #fff;
    z-index: 2;
}

.card-category {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: #888;
}

.card-title {
    font-size: 1.4rem;
    font-weight: 700;
    color: #111;
    letter-spacing: -0.5px;
}

.card-btn {
    position: absolute;
    bottom: 24px;
    right: 24px;
    background: #000;
    color: #fff;
    border: none;
    padding: 8px 18px;
    border-radius: 100px;
    font-size: 0.85rem;
    font-weight: 500;
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.4s ease, transform 0.4s ease, background 0.3s ease;
}

.project-card.visible:hover .card-btn {
    opacity: 1;
    transform: translateY(0);
}

.card-btn:hover {
    background: #333;
}

/* Load More */
.load-more-wrap {
    text-align: center;
    margin-top: 72px;
}

.load-more-btn {
    background: #fff;
    color: #111;
    border: 1px solid #e0e0e0;
    padding: 14px 36px;
    font-size: 0.95rem;
    font-weight: 500;
    border-radius: 100px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: inherit;
    box-shadow: 0 4px 12px rgba(0,0,0,0.02);
}

.load-more-btn:hover {
    border-color: #000;
    background: #000;
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.08);
}

.load-more-btn.hidden {
    display: none;
}

/* Footer */
.simple-footer {
    text-align: center;
    padding: 40px 24px;
    border-top: 1px solid rgba(0,0,0,0.05);
    color: #999;
    font-size: 0.9rem;
}

/* Responsive Grid */
@media (max-width: 1024px) {
    .grid-container { grid-template-columns: repeat(2, 1fr); gap: 32px; }
    .grid-section { padding: 0 32px 80px; }
    .top-nav { padding: 24px 32px; }
}

@media (max-width: 640px) {
    .grid-container { grid-template-columns: 1fr; gap: 28px; }
    .grid-section { padding: 0 20px 60px; }
    .top-nav { padding: 20px; }
    .work-header { padding: 40px 20px 50px; }
    .work-title { font-size: 2.8rem; letter-spacing: -1px; }
    
    .card-btn {
        opacity: 1;
        transform: translateY(0);
        position: relative;
        bottom: 0;
        right: 0;
        margin-top: 12px;
        align-self: flex-start;
        background: #f4f4f4;
        color: #000;
    }
    
    .project-card.visible:hover .card-btn {
        background: #000;
        color: #fff;
    }
}