.folder-card {
    position: relative;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 0 10px 10px 10px;
    padding: 20px;
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.1);
    height: 220px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    overflow: visible;
    margin-top: 20px;
}

.folder-card::before {
    content: '';
    position: absolute;
    top: -14px;
    left: 0;
    width: 90px;
    height: 15px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px 10px 0 0;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    border-left: 1px solid rgba(255, 255, 255, 0.1);
    border-right: 1px solid rgba(255, 255, 255, 0.1);
    border-bottom: none;
}

.folder-cover {
    position: absolute;
    top: 10px; left: 10px; right: 10px; bottom: 60px;
    background: #1a1a1a;
    border-radius: 6px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: transform 0.4s ease;
}

.folder-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.8;
    transition: opacity 0.3s;
}

.folder-cover i {
    font-size: 3rem;
    color: var(--accent);
    opacity: 0.5;
}

.folder-info {
    margin-top: auto;
    padding-top: 150px;
    z-index: 2;
}

.folder-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: #fff;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    transform: translateY(-20px);
}

.folder-card:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--accent);
}

.folder-card:hover::before {
     background: rgba(255, 255, 255, 0.08);
     border-color: var(--accent);
}

.folder-card:hover .folder-cover {
    transform: translateY(-10px) scale(0.98);
    box-shadow: 0 10px 20px rgba(0,0,0,0.3);
}

.folder-card:hover .folder-cover img {
    opacity: 1;
}


.research-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 12px;
    padding: 25px;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    overflow: hidden;
}

.research-icon-box {
    width: 60px;
    height: 60px;
    background: rgba(3, 179, 195, 0.1);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    color: var(--accent);
    font-size: 1.5rem;
    transition: transform 0.3s;
}

.research-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: #fff;
    margin-bottom: 10px;
    line-height: 1.3;
}

.research-card:hover {
    background: rgba(3, 179, 195, 0.05);
    border-color: var(--accent);
    transform: translateY(-5px);
}

.research-card:hover .research-icon-box {
    transform: rotate(10deg) scale(1.1);
    background: var(--accent);
    color: var(--dark);
}


.pc-card-wrapper {
    perspective: 1200px;
    transform: translate3d(0, 0, 0.1px);
    position: relative;
    width: 100%;
    max-width: 380px;
    margin: 0 auto;
    min-height: 400px; 
}

.pc-card {
    display: grid;
    aspect-ratio: 0.8;
    border-radius: var(--card-radius);
    position: relative;
    box-shadow: 0 30px 60px rgba(0,0,0,0.5);
    transition: transform 0.1s ease;
    transform-style: preserve-3d;
    background: rgba(20, 20, 20, 0.6);
    border: 1px solid var(--glass-border);
    width: 100%;
    height: 100%;
}

.pc-inside {
    inset: 5px;
    position: absolute;
    border-radius: 25px;
    overflow: hidden;
    transform: translateZ(0);
    background: #000;
}

.pc-avatar {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transform: scale(1.1);
}

.pc-glare {
    position: absolute;
    inset: 0;
    background: radial-gradient(
        circle at var(--pointer-x, 50%) var(--pointer-y, 50%),
        rgba(255, 255, 255, 0.25) 0%,
        transparent 60%
    );
    mix-blend-mode: overlay;
    pointer-events: none;
    z-index: 10;
}

.pc-content {
    position: absolute;
    bottom: 25px;
    left: 20px;
    right: 20px;
    background: rgba(5, 5, 5, 0.85);
    backdrop-filter: blur(15px);
    padding: 18px;
    border-radius: 20px;
    border: 1px solid var(--glass-border);
    transform: translateZ(30px);
    z-index: 20;
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

.pc-name {
    font-size: 1.3rem;
    font-weight: 700;
    color: white;
    margin-bottom: 4px;
}

.pc-title {
    font-size: 0.85rem;
    color: var(--accent);
    font-family: 'JetBrains Mono', monospace;
    opacity: 0.9;
}