.sales-invoice-dashboard {
    background: white;
    border-radius: 15px;
    padding: 2rem;
    margin: 0;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
}

.sales-invoice-dashboard h2 {
    color: var(--primary-color);
    font-size: 1.8rem;
    margin-bottom: 2rem;
    text-align: center;
    position: relative;
}

.sales-invoice-dashboard h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 3px;
    background: var(--accent-color);
    border-radius: 2px;
}

.sales-invoice-form {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

.invoice-header {
    background: #f8f9fa;
    border-radius: 15px;
    padding: 1.5rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.invoice-header .form-group {
    display: flex;
    flex-direction: column;
}

.invoice-header label {
    margin-bottom: 0.5rem;
    color: var(--primary-color);
    font-weight: 500;
}

.invoice-header input,
.invoice-header select {
    padding: 0.8rem;
    border: 2px solid #e9ecef;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.invoice-header input:focus,
.invoice-header select:focus {
    border-color: var(--secondary-color);
    outline: none;
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

.invoice-items {
    background: #f8f9fa;
    border-radius: 15px;
    padding: 1.5rem;
}

.invoice-items-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0 10px;
}

.invoice-items-table th {
    background: var(--primary-color);
    color: white;
    padding: 1rem;
    text-align: right;
}

.invoice-items-table td {
    background: white;
    padding: 0.8rem;
    vertical-align: middle;
}

.invoice-items-table input {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid #e9ecef;
    border-radius: 4px;
}

.invoice-total {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin-top: 2rem;
}

.total-group {
    background: #f8f9fa;
    border-radius: 10px;
    padding: 1rem;
    text-align: center;
}

.total-group label {
    display: block;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.total-group .value {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--secondary-color);
}

.invoice-actions {
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
    margin-top: 2rem;
}

.invoice-btn {
    padding: 0.8rem 1.5rem;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
}

.save-invoice-btn {
    background: var(--secondary-color);
    color: white;
}

.cancel-invoice-btn {
    background: #f8f9fa;
    color: var(--primary-color);
    border: 1px solid #e9ecef;
}