.cis-container {
    max-width: 100%;
    margin: 20px auto;
    padding: 20px;
    background: #ffffff;
    border-radius: 10px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.08);
    font-family: "Segoe UI", sans-serif;
}

.cis-form-group {
    margin-bottom: 20px;
}

.cis-form-group label {
    display: block;
    margin-bottom: 6px;
    font-weight: 600;
    color: #333;
}

.cis-form-group input[type="text"] {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ccc;
    border-radius: 6px;
    font-size: 16px;
    box-sizing: border-box;
}

.cis-button {
    background: #0073aa;
    color: #fff;
    border: none;
    padding: 12px 24px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 16px;
    transition: background 0.3s ease;
}

.cis-button:hover {
    background: #005b8d;
}

.cis-thong-tin-doanh-nghiep {
    margin-top: 30px;
    background: #f9f9f9;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 3px 8px rgba(0,0,0,0.05);
}

.cis-section {
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 1px solid #ddd;
}

.cis-section h3 {
    color: #0073aa;
    font-size: 20px;
    margin-bottom: 15px;
    border-bottom: 2px solid #0073aa;
    padding-bottom: 8px;
}

.cis-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.cis-row {
    display: flex;
    flex-wrap: wrap;
    margin-bottom: 10px;
}

.cis-label {
    font-weight: 600;
    min-width: 180px;
    color: #444;
}

.cis-value {
    flex: 1;
    color: #222;
}

.cis-table-hoa-don {
    overflow-x: auto;
    margin-top: 20px;
}

.cis-table-hoa-don table {
    width: 100%;
    border-collapse: collapse;
    min-width: 600px;
}

.cis-table-hoa-don th,
.cis-table-hoa-don td {
    border: 1px solid #ddd;
    padding: 12px;
    text-align: left;
    font-size: 15px;
}

.cis-table-hoa-don th {
    background-color: #f0f0f0;
    font-weight: 700;
}

.cis-thong-bao-loi {
    color: #721c24;
    padding: 12px;
    background: #f8d7da;
    border: 1px solid #f5c6cb;
    border-radius: 5px;
    margin-top: 15px;
    font-weight: 600;
}

#cis-loading {
    text-align: center;
    padding: 20px;
    color: #0073aa;
    font-weight: bold;
}

/* Responsive */
@media screen and (max-width: 768px) {
    .cis-grid {
        grid-template-columns: 1fr;
    }

    .cis-label {
        min-width: 100%;
        margin-bottom: 5px;
    }

    .cis-row {
        flex-direction: column;
    }

    .cis-button {
        width: 100%;
        text-align: center;
    }
}