.admin-invoices-page .navbar-bg {
    background-color: #000080;
}

.admin-invoices-page .section-header h1 {
    color: #30375b;
    font-size: 38px;
    font-weight: 700;
    letter-spacing: -0.3px;
}

.admin-invoices-page .section-header-breadcrumb .breadcrumb-item {
    font-size: 16px;
}

.admin-invoice-toolbar {
    display: flex;
    align-items: center;
    margin-bottom: 18px;
}

.admin-invoice-create-btn {
    border: 0;
    border-radius: 999px;
    background: #000080;
    color: #fff;
    font-size: 17px;
    font-weight: 700;
    min-height: 50px;
    padding: 10px 22px;
    box-shadow: 0 8px 16px rgba(0, 0, 128, 0.24);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.admin-invoice-create-btn:hover,
.admin-invoice-create-btn:focus {
    color: #fff;
    background: #00006d;
}

.admin-invoice-feedback {
    margin: 0 0 10px;
    min-height: 22px;
    color: #5b6582;
    font-size: 13px;
    font-weight: 600;
}

.admin-invoice-feedback.is-success {
    color: #1c8f63;
}

.admin-invoice-feedback.is-info {
    color: #2f58b6;
}

.admin-invoice-table-card {
    border: 1px solid #e2e8f2;
    border-radius: 0;
    box-shadow: none;
    background: #f5f7f8;
}

.admin-invoice-table-wrap {
    width: 100%;
    overflow-x: auto;
}

.admin-invoice-table {
    min-width: 1100px;
    margin: 0;
}

.admin-invoice-table thead th {
    border: 0;
    background: #eef2f4;
    color: #555;
    font-size: 16px;
    font-weight: 700;
    padding: 14px 14px;
    white-space: nowrap;
}

.admin-invoice-table tbody td {
    border: 0;
    color: #5f6b7f;
    font-size: 15px;
    font-weight: 500;
    padding: 14px 14px;
    vertical-align: top;
}

.admin-invoice-table tbody tr + tr td {
    border-top: 1px solid #edf1f6;
}

.admin-invoice-user {
    line-height: 1.34;
}

.admin-invoice-user span {
    display: block;
}

.admin-invoice-course-pill {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 100px;
    border-radius: 999px;
    background: #000080;
    color: #fff;
    font-size: 14px;
    font-weight: 700;
    padding: 7px 14px;
    box-shadow: 0 6px 12px rgba(0, 0, 128, 0.2);
}

.admin-invoice-status {
    font-weight: 600;
}

.admin-invoice-status.is-unpaid {
    color: #6a7386;
}

.admin-invoice-status.is-paid {
    color: #2c8b60;
}

.admin-invoice-action-btn {
    border: 0;
    border-radius: 999px;
    background: #000080;
    color: #fff;
    font-size: 14px;
    font-weight: 700;
    padding: 8px 16px;
    min-height: 42px;
    display: inline-flex;
    align-items: center;
    gap: 7px;
}

.admin-invoice-action-btn:hover,
.admin-invoice-action-btn:focus {
    color: #fff;
    background: #00006d;
}

.admin-invoice-actions .dropdown-menu {
    min-width: 200px;
    border-radius: 10px;
    border-color: #dbe3ef;
    box-shadow: 0 14px 28px rgba(18, 31, 56, 0.13);
}

.admin-invoice-actions .dropdown-item {
    color: #344360;
    font-size: 14px;
    font-weight: 600;
    padding: 9px 14px;
}

.admin-invoice-actions .dropdown-item:hover {
    background: #eef3fb;
    color: #1f3058;
}

.admin-invoice-actions .dropdown-item.disabled {
    pointer-events: none;
    opacity: 0.45;
}

.admin-invoice-modal .modal-content {
    border-radius: 12px;
    border: 1px solid #dfe6f2;
}

.admin-invoice-modal .modal-title {
    color: #2c3758;
    font-weight: 700;
}

.admin-invoice-modal .form-group label {
    color: #2f3758;
    font-size: 13px;
    font-weight: 700;
}

.admin-invoice-modal .form-control {
    min-height: 42px;
    border-color: #d4dcea;
}

.admin-invoice-modal textarea.form-control {
    min-height: 100px;
}

.admin-invoice-detail-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
}

.admin-invoice-detail-item {
    border: 1px solid #edf1f7;
    border-radius: 8px;
    background: #f9fbff;
    padding: 9px 11px;
}

.admin-invoice-detail-item span {
    display: block;
    color: #7d879a;
    font-size: 12px;
    font-weight: 700;
    margin-bottom: 3px;
}

.admin-invoice-detail-item strong {
    color: #2b3958;
    font-size: 14px;
    font-weight: 700;
}

@media (max-width: 1200px) {
    .admin-invoice-table thead th {
        font-size: 16px;
    }

    .admin-invoice-table tbody td {
        font-size: 15px;
    }

    .admin-invoice-course-pill {
        font-size: 13px;
    }

    .admin-invoice-action-btn {
        font-size: 14px;
    }
}

@media (max-width: 768px) {
    .admin-invoices-page .section-header h1 {
        font-size: 30px;
    }

    .admin-invoice-create-btn {
        font-size: 15px;
        min-height: 42px;
    }

    .admin-invoice-detail-grid {
        grid-template-columns: 1fr;
    }
}