/* Modal Styles */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    padding: 1rem;
    animation: fadeIn 0.2s ease-in-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

.modal-content {
    background: var(--card-bg);
    border-radius: 12px;
    max-width: 900px;
    width: 100%;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    animation: slideUp 0.3s ease-out;
}

@keyframes slideUp {
    from {
        transform: translateY(20px);
        opacity: 0;
    }

    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.modal-header {
    padding: 1.5rem 2rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-shrink: 0;
}

.modal-title {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.modal-title h2 {
    margin: 0;
    font-size: 1.5rem;
    color: var(--text-primary);
}

.btn-close {
    background: none;
    border: none;
    font-size: 2rem;
    line-height: 1;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    transition: all 0.2s;
}

.btn-close:hover {
    background-color: #f1f5f9;
    color: var(--text-primary);
}

.modal-body {
    padding: 2rem;
    overflow-y: auto;
    flex: 1;
}

.modal-footer {
    padding: 1.5rem 2rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-shrink: 0;
    gap: 1rem;
}

.footer-actions-left,
.footer-actions-right {
    display: flex;
    gap: 0.75rem;
}

/* Form Styles in Modal */
.form-section {
    margin-bottom: 2rem;
}

.form-section:last-child {
    margin-bottom: 0;
}

.form-section h3 {
    margin: 0 0 1rem 0;
    font-size: 1.125rem;
    color: var(--text-primary);
    font-weight: 600;
}

.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
}

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

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

.form-group.full-width {
    grid-column: 1 / -1;
}

.form-group label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.form-group input,
.form-group textarea,
.form-group select {
    padding: 0.625rem 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 0.9375rem;
    transition: all 0.2s;
    font-family: inherit;
    background-color: #ffffff;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-group input:disabled,
.form-group textarea:disabled,
.form-group select:disabled {
    background-color: #f8fafc;
    color: var(--text-secondary);
    cursor: not-allowed;
}

.form-group input[readonly] {
    background-color: #f8fafc;
    color: var(--text-secondary);
}

/* Add Line Form */
.add-line-form {
    background-color: #f8fafc;
    padding: 1.5rem;
    border-radius: 8px;
    margin-bottom: 1rem;
    border: 2px dashed var(--border-color);
}

.form-group textarea {
    resize: vertical;
    min-height: 80px;
}

/* Invoice Lines Table */
.invoice-lines {
    margin: 1rem 0;
}

.lines-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

.lines-table thead {
    background-color: #f8fafc;
}

.lines-table th {
    padding: 0.75rem;
    text-align: left;
    font-weight: 600;
    color: var(--text-secondary);
    border-bottom: 2px solid var(--border-color);
}

.lines-table td {
    padding: 0.75rem;
    border-bottom: 1px solid var(--border-color);
}

.lines-table tbody tr:hover {
    background-color: #f8fafc;
}

.no-lines {
    text-align: center;
    color: var(--text-secondary);
    font-style: italic;
}

/* Invoice Totals */
.invoice-totals {
    margin-top: 1.5rem;
    padding: 1rem;
    background-color: #f8fafc;
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    max-width: 300px;
    margin-left: auto;
}

.total-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.9375rem;
}

.total-row.pending {
    font-size: 1.125rem;
    color: var(--primary);
    padding-top: 0.75rem;
    border-top: 2px solid var(--border-color);
}

/* Button Styles */
.btn-small {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-primary {
    background-color: var(--primary);
    color: white;
}

.btn-primary:hover {
    background-color: var(--primary-hover);
}

.btn-success {
    background-color: var(--success);
    color: white;
}

.btn-success:hover {
    background-color: var(--success-hover);
}

.btn-cancel {
    background-color: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

.btn-cancel:hover {
    background-color: #f8fafc;
    color: var(--text-primary);
}

/* Invoice Actions Buttons */
.invoice-actions {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    justify-content: center;
}

.btn-action {
    background: none;
    border: none;
    font-size: 1.25rem;
    cursor: pointer;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.btn-action:hover {
    background-color: #f1f5f9;
    transform: scale(1.1);
}

.btn-delete:hover {
    background-color: #fee2e2;
}

/* Loading and Error States */
.loading {
    text-align: center;
    padding: 2rem;
    color: var(--text-secondary);
}

.error {
    text-align: center;
    padding: 2rem;
    color: var(--danger);
}

/* Responsive Modal */
@media (max-width: 768px) {
    .modal-overlay {
        padding: 0;
    }

    .modal-content {
        max-width: 100%;
        max-height: 100vh;
        border-radius: 0;
    }

    .modal-header,
    .modal-body,
    .modal-footer {
        padding: 1rem;
    }

    .form-row {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }

    .invoice-totals {
        max-width: 100%;
    }

    .modal-footer {
        flex-direction: column;
    }

    .footer-actions-left,
    .footer-actions-right {
        width: 100%;
    }

    .footer-actions-left button,
    .footer-actions-right button {
        flex: 1;
    }
}