* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    /* background: linear-gradient(135deg, #667eea 0%, #764ba2 100%); */
    background: #f0f0f0;
    min-height: 100vh;
    padding: 20px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    background: white;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
}

header h1 {
    font-size: 28px;
    font-weight: 600;
}

.header-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.btn-primary {
    background: white;
    color: #667eea;
}

.btn-primary:hover {
    background: #f0f0f0;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.btn-secondary {
    background: #6c757d;
    color: white;
}

.btn-secondary:hover {
    background: #5a6268;
}

.btn-view {
    background: #17a2b8;
    color: white;
    padding: 6px 12px;
    font-size: 12px;
    margin-right: 5px;
    text-decoration: none;
    display: inline-block;
    border: none;
    border-radius: 6px;
    cursor: pointer;
}

.btn-view:hover {
    background: #138496;
    color: white;
    text-decoration: none;
}

.btn-edit {
    background: #28a745;
    color: white;
    padding: 6px 12px;
    font-size: 12px;
    margin-right: 5px;
}

.btn-edit:hover {
    background: #218838;
}

.btn-delete {
    background: #dc3545;
    color: white;
    padding: 6px 12px;
    font-size: 12px;
}

.btn-delete:hover {
    background: #c82333;
}

/* Tabs */
.tabs {
    display: flex;
    border-bottom: 2px solid #dee2e6;
    padding: 0 30px;
    background: #f8f9fa;
}

.tab-btn {
    padding: 15px 25px;
    border: none;
    background: transparent;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    color: #6c757d;
    border-bottom: 3px solid transparent;
    transition: all 0.3s ease;
}

.tab-btn:hover {
    color: #667eea;
    background: rgba(102, 126, 234, 0.1);
}

.tab-btn.active {
    color: #667eea;
    border-bottom-color: #667eea;
    background: white;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

.vouchers-table-container {
    padding: 30px;
    overflow-x: auto;
}

.vouchers-table {
    width: 100%;
    border-collapse: collapse;
    background: white;
}

.vouchers-table thead {
    background: #f8f9fa;
}

.vouchers-table th {
    padding: 15px;
    text-align: left;
    font-weight: 600;
    color: #495057;
    border-bottom: 2px solid #dee2e6;
}

.vouchers-table td {
    padding: 15px;
    border-bottom: 1px solid #dee2e6;
    color: #495057;
}

.vouchers-table tbody tr:hover {
    background: #f8f9fa;
}

.vouchers-table .loading {
    text-align: center;
    color: #6c757d;
    padding: 40px;
}

.description-cell {
    max-width: 300px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
}

.modal-content {
    background-color: white;
    margin: 2% auto;
    padding: 0;
    border-radius: 12px;
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    animation: modalSlideIn 0.3s ease;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

@keyframes modalSlideIn {
    from {
        transform: translateY(-50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.modal-header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 20px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-radius: 12px 12px 0 0;
    flex-shrink: 0;
}

.modal-header h2 {
    font-size: 22px;
    font-weight: 600;
}

.close {
    color: white;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    line-height: 1;
}

.close:hover {
    opacity: 0.7;
}

form {
    padding: 30px;
    overflow-y: auto;
    flex: 1;
    min-height: 0;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: #495057;
    font-weight: 500;
    font-size: 14px;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px;
    border: 2px solid #dee2e6;
    border-radius: 6px;
    font-size: 14px;
    font-family: inherit;
    transition: border-color 0.3s ease;
    background: white;
}

.form-group select {
    cursor: pointer;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #667eea;
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    margin-top: 30px;
}

/* Responsive */
@media (max-width: 768px) {
    header {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }

    .vouchers-table-container {
        padding: 15px;
    }

    .vouchers-table {
        font-size: 12px;
    }

    .vouchers-table th,
    .vouchers-table td {
        padding: 10px 5px;
    }

    .description-cell {
        max-width: 150px;
    }

    .modal-content {
        margin: 5% auto;
        max-height: 85vh;
    }

    form {
        padding: 20px;
    }
}