/* Reset & body */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #1c1c1c, #2b2b2b);
    padding: 20px;
    line-height: 1.6;
    color: #f5f5f5;
}

/* Link style - chỉnh màu để dễ đọc trên nền tối */
a {
    color: #00ffff; /* xanh ngọc nổi bật */
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: #ffcc00; /* vàng khi hover */
    text-decoration: underline;
}

/* Nút quay lại trang chủ */
.back-home {
    text-align: center;
    margin: 20px 0;
}

.back-home-btn {
    display: inline-block;
    padding: 10px 20px;
    background: linear-gradient(135deg, #ff7e5f, #feb47b);
    color: #fff;
    font-weight: bold;
    border-radius: 30px;
    text-decoration: none;
    transition: all 0.3s ease;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
}

.back-home-btn:hover {
    background: linear-gradient(135deg, #feb47b, #ff7e5f);
    transform: scale(1.05);
    box-shadow: 0 6px 14px rgba(0, 0, 0, 0.4);
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    background: rgba(255,255,255,0.05);
    backdrop-filter: blur(12px);
    border-radius: 16px;
    box-shadow: 0 8px 30px rgba(0,0,0,0.3);
    overflow: hidden;
    padding-bottom: 20px;
}

/* Header */
.header {
    background: rgba(0,0,0,0.6);
    backdrop-filter: blur(10px);
    color: white;
    text-align: center;
    padding: 40px 20px;
}

.header h1 {
    font-size: clamp(1.6rem, 5vw, 2.4rem);
    font-weight: 700;
    margin-bottom: 10px;
    letter-spacing: 1px;
}

.header p {
    font-size: 1rem;
    opacity: 0.8;
}

/* Table Wrapper */
.table-wrapper {
    padding: 30px;
    overflow-x: auto;
}

/* Bảng chính */
table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    background: rgba(255, 255, 255, 0.06);
    backdrop-filter: blur(8px);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

thead {
    background: rgba(255,255,255,0.1);
    color: #fff;
}

th {
    padding: 14px;
    text-align: center;
    font-weight: 600;
    font-size: 1rem;
    border-right: 1px solid rgba(255,255,255,0.15);
}

th:first-child,
th:nth-child(2) {
    text-align: left;
    background: rgba(255,255,255,0.08);
}

td {
    padding: 12px 14px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    border-right: 1px solid rgba(255,255,255,0.05);
    vertical-align: top;
    color: #f5f5f5;
    transition: background 0.3s ease;
}

tbody tr:hover {
    background: rgba(255,255,255,0.05);
    transform: scale(1.01);
}

/* Cell style */
.stt {
    text-align: center;
    font-weight: 600;
    background: rgba(255,255,255,0.08);
}

.feature-name {
    font-weight: 600;
    color: #fff;
}

.check-cell {
    text-align: center;
    background: rgba(39,174,96,0.2);
    color: #27ae60;
    font-weight: bold;
    font-size: 1.1rem;
}

.number-cell {
    text-align: center;
    background: rgba(255,143,0,0.2);
    color: #ffb347;
    font-weight: bold;
}

.description-cell {
    color: #ddd;
    font-size: 0.9rem;
}

.custom-cell {
    color: #64b5f6;
    font-size: 0.9rem;
}

/* Bảng dịch vụ bổ sung (extra-service) */
.extra-service {
    background: rgba(0,0,0,0.6);
    backdrop-filter: blur(12px);
    color: #fff;
    padding: 40px 20px;
    margin-top: 40px;
    border-radius: 12px;
    box-shadow: 0 6px 20px rgba(0,0,0,0.5);
}

.extra-service h2 {
    text-align: center;
    font-size: 26px;
    margin-bottom: 20px;
    font-weight: 700;
}

.extra-service table {
    width: 100%;
    border-collapse: collapse;
    background: rgba(255,255,255,0.05);
    border-radius: 8px;
    overflow: hidden;
}

.extra-service th, 
.extra-service td {
    border: 1px solid rgba(255,255,255,0.15);
    padding: 12px;
}

.extra-service thead tr {
    background: rgba(255,255,255,0.1);
}

/* Responsive */
@media (max-width: 768px) {
    .header h1 {
        font-size: 1.8rem;
    }

    th, td {
        padding: 10px 8px;
        font-size: 0.85rem;
    }

    .feature-name {
        min-width: 180px;
    }

    .back-home-btn {
        display: block;
        width: 90%;
        margin: 0 auto;
        text-align: center;
    }

    .table-wrapper {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
}