/* ================= TINH NANG MODULE – GAMING NEON ================= */

.tinhnang-wrapper{
    width:100%;
    padding:60px 20px;

    background: radial-gradient(circle at top, #1a2a6c, #0b0b15 60%, #000 100%);
    position:relative;
    overflow:hidden;
}

/* glow nền */
.tinhnang-wrapper::before{
    content:"";
    position:absolute;
    width:560px;
    height:560px;
    background:rgba(0,255,255,.18);
    filter:blur(120px);
    top:-170px;
    left:-170px;
    pointer-events:none;
}
.tinhnang-wrapper::after{
    content:"";
    position:absolute;
    width:560px;
    height:560px;
    background:rgba(255,0,200,.14);
    filter:blur(120px);
    bottom:-170px;
    right:-170px;
    pointer-events:none;
}

/* GRID */
.tinhnang-grid{
    max-width:1800px;
    margin:auto;
    display:grid;
    grid-template-columns:repeat(4,1fr);
    gap:22px;
    position:relative;
    z-index:2;
}

/* BOX */
.tinhnang-box{
    position:relative;
    overflow:hidden;
    display:block;

    padding:28px 22px;
    min-height:160px;

    background: rgba(15, 15, 25, 0.78);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius:18px;

    text-decoration:none;
    color: rgba(255,255,255,0.88);

    box-shadow: 0 12px 40px rgba(0,0,0,.55);
    backdrop-filter: blur(10px);

    transition: .25s ease;
}

/* neon line top */
.tinhnang-box::before{
    content:"";
    position:absolute;
    left:16px;
    right:16px;
    top:-1px;
    height:2px;
    background:linear-gradient(90deg, transparent, #00ffff, #ff00cc, transparent);
    opacity:.85;
}

/* overlay glow hover */
.tinhnang-box::after{
    content:"";
    position:absolute;
    inset:0;
    background: radial-gradient(circle at left, rgba(0,255,255,0.14), transparent 45%),
                radial-gradient(circle at right, rgba(255,0,200,0.14), transparent 45%);
    opacity:0;
    transition:.25s ease;
    pointer-events:none;
}

/* CONTENT */
.tinhnang-box h3,
.tinhnang-box h5,
.tinhnang-box p{
    position:relative;
    z-index:2;
}

/* title */
.tinhnang-box h3{
    font-size:18px;
    margin-bottom:8px;
    letter-spacing:.3px;
    text-transform:uppercase;
    color:#00ffff;
}

/* nếu bạn dùng h5 */
.tinhnang-box h5{
    font-size:18px;
    margin-bottom:8px;
    letter-spacing:.3px;
    text-transform:uppercase;
    color:#ff00cc;
}

/* description */
.tinhnang-box p{
    font-size:13.5px;
    line-height:1.6;
    color: rgba(255,255,255,0.72);
}

/* HOVER */
.tinhnang-box:hover{
    transform:translateY(-6px);
    border-color: rgba(0,255,255,0.20);
    box-shadow: 0 18px 45px rgba(0,0,0,.70);
}

.tinhnang-box:hover::after{
    opacity:1;
}

/* CLICK */
.tinhnang-box:active{
    transform:scale(.97);
}

/* ================= RESPONSIVE ================= */
@media(max-width:992px){
    .tinhnang-grid{
        grid-template-columns:repeat(2,1fr);
    }
}

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