/* Nền đen sâu và cố định để ánh sáng nổi bật */
body {
    background-color: #050505 !important;
    color: #ffffff;
    margin: 0;
    font-family: 'Segoe UI', sans-serif;
    justify-content: center;
    min-height: 100vh;
    overflow-x: hidden;
}

/* Các đốm sáng mờ ảo phía sau (Blobs) */
.bg-animations {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
}

.blob {
    position: absolute;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(0, 212, 255, 0.4) 0%, rgba(145, 90, 255, 0) 70%);
    filter: blur(100px); /* Làm mờ cực mạnh để tạo ánh sáng nền */
    border-radius: 50%;
    opacity: 0.6;
}

.blob:nth-child(1) { top: -10%; left: -5%; background: #00d4ff; }
.blob:nth-child(2) { bottom: 10%; right: -5%; background: #915aff; }
.blob:nth-child(3) { top: 50%; left: 30%; background: #00d4ff; width: 200px; height: 200px; opacity: 0.3; }

/* Container chứa các card */
.card-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 50px;
    padding: 20px;
}

/* Hiệu ứng Glass Card có viền phát sáng */
.glass-card {
    background: rgba(255, 255, 255, 0.03);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 25px;
    padding: 40px 20px;
    text-decoration: none;
    color: white;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    display: flex;
    flex-direction: column;
    align-items: center;
    position: relative;
}

/* HIỆU ỨNG ÁNH SÁNG KHI HOVER (QUAN TRỌNG) */
.glass-card:hover {
    transform: translateY(-15px);
    background: rgba(255, 255, 255, 0.08);
    /* Viền phát sáng màu xanh Cyan rực rỡ */
    border-color: #00d4ff; 
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.4), 
                0 0 40px rgba(0, 212, 255, 0.2),
                inset 0 0 15px rgba(0, 212, 255, 0.1);
}

/* Ánh sáng cho Icon */
.icon-box {
    font-size: 60px;
    margin-bottom: 20px;
    filter: drop-shadow(0 0 10px rgba(0, 212, 255, 0.5)); /* Icon tự phát sáng */
    transition: 0.4s;
}

.glass-card:hover .icon-box {
    transform: scale(1.2);
    filter: drop-shadow(0 0 20px #00d4ff);
}

/* Nút bấm có hào quang */
.btn-explore {
    background: linear-gradient(90deg, #00d4ff, #915aff);
    padding: 12px 30px;
    border-radius: 50px;
    font-weight: bold;
    box-shadow: 0 5px 15px rgba(0, 212, 255, 0.3);
    transition: 0.3s;
}

.btn-explore:hover {
    box-shadow: 0 0 25px rgba(0, 212, 255, 0.6);
    transform: scale(1.05);
}
.glitch-text{
    font-size: 3.5rem;
    font-weight: 800;
    text-align: center;
    background: linear-gradient(90deg, #00d4ff 0%, #3a86ff 30%, #915aff 70%, #ff00ff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 50px;
    
}
.fade-in-text{
    font-size: 1.5rem;
    font-weight: 800;
    text-align: center;
    background: linear-gradient(90deg, #00d4ff 0%, #3a86ff 30%, #915aff 70%, #ff00ff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 50px;
}