/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f5f5f5;
    color: #333;
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header Styles */
.header {
    background-color: #000000;
    color: white;
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.header-title {
    font-size: 1.8rem;
    font-weight: 600;
}

.header-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.search-container {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.search-input {
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 25px;
    font-size: 0.9rem;
    width: 250px;
    outline: none;
    transition: all 0.3s ease;
}

.search-input:focus {
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.3);
}

.filter-btn {
    background-color: #7f8c8d;
    color: white;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 5px;
    cursor: pointer;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
}

.filter-btn:hover {
    background-color: #6c7b7d;
    transform: translateY(-1px);
}

/* Main Content */
.main-content {
    flex: 1;
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    width: 100%;
}

/* Controls Bar */
.controls-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding: 1rem;
    background: white;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    flex-wrap: wrap;
    gap: 1rem;
}

.controls-left {
    display: flex;
    gap: 1.5rem;
    align-items: center;
    flex-wrap: wrap;
}

.control-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.control-group label {
    font-weight: 500;
    color: #555;
}

.control-select {
    padding: 0.5rem;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 0.9rem;
    outline: none;
    transition: border-color 0.3s ease;
}

.control-select:focus {
    border-color: #3498db;
    box-shadow: 0 0 0 2px rgba(52, 152, 219, 0.2);
}

.add-btn {
    background-color: #27ae60;
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 5px;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
}

.add-btn:hover {
    background-color: #229954;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(39, 174, 96, 0.3);
}

/* Employee Grid */
.employee-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.employee-card {
    background: white;
    border-radius: 10px;
    padding: 1.5rem;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    border: 1px solid #f0f0f0;
}

.employee-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.employee-name {
    font-size: 1.2rem;
    font-weight: bold;
    margin-bottom: 0.5rem;
    color: #2c3e50;
}

.employee-email {
    color: #7f8c8d;
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

.employee-details {
    margin-bottom: 1.5rem;
}

.employee-detail {
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.detail-label {
    font-weight: bold;
    color: #34495e;
    min-width: 80px;
}

.detail-value {
    color: #555;
}

.employee-actions {
    display: flex;
    gap: 0.75rem;
    justify-content: flex-end;
}

.edit-btn, .delete-btn {
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 500;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.edit-btn {
    background-color: #3498db;
    color: white;
}

.edit-btn:hover {
    background-color: #2980b9;
    transform: translateY(-1px);
}

.delete-btn {
    background-color: #e74c3c;
    color: white;
}

.delete-btn:hover {
    background-color: #c0392b;
    transform: translateY(-1px);
}

/* Filter Sidebar */
.filter-sidebar {
    position: fixed;
    top: 0;
    right: -400px;
    width: 400px;
    height: 100vh;
    background: white;
    box-shadow: -2px 0 10px rgba(0, 0, 0, 0.1);
    transition: right 0.3s ease;
    z-index: 2000;
    overflow-y: auto;
}

.filter-sidebar.active {
    right: 0;
}

.filter-content {
    padding: 2rem;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.filter-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid #eee;
}

.filter-header h3 {
    color: #2c3e50;
    font-size: 1.3rem;
}

.close-btn {
    background: none;
    border: none;
    font-size: 1.2rem;
    cursor: pointer;
    color: #7f8c8d;
    padding: 0.5rem;
    border-radius: 50%;
    transition: all 0.3s ease;
}

.close-btn:hover {
    background-color: #f8f9fa;
    color: #e74c3c;
}

.filter-body {
    flex: 1;
}

.filter-group {
    margin-bottom: 1.5rem;
}

.filter-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: #555;
}

.filter-input, .filter-select {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 0.9rem;
    outline: none;
    transition: border-color 0.3s ease;
}

.filter-input:focus, .filter-select:focus {
    border-color: #3498db;
    box-shadow: 0 0 0 2px rgba(52, 152, 219, 0.2);
}

.filter-actions {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

.apply-btn, .reset-btn {
    flex: 1;
    padding: 0.75rem;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s ease;
}

.apply-btn {
    background-color: #3498db;
    color: white;
}

.apply-btn:hover {
    background-color: #2980b9;
}

.reset-btn {
    background-color: #95a5a6;
    color: white;
}

.reset-btn:hover {
    background-color: #7f8c8d;
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 3000;
    animation: fadeIn 0.3s ease;
}

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-content {
    background: white;
    border-radius: 10px;
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    animation: slideIn 0.3s ease;
}

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

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 2rem;
    border-bottom: 1px solid #eee;
}

.modal-header h2 {
    color: #2c3e50;
    font-size: 1.4rem;
}

/* Form Styles */
.employee-form {
    padding: 2rem;
}

.form-row {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.form-group {
    flex: 1;
}

.form-group.full-width {
    width: 100%;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: #555;
}

.form-group input, .form-group select {
    width: 100%;
    padding: 0.45rem;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 0.9rem;
    outline: none;
    transition: border-color 0.3s ease;
}

.form-group input:focus, .form-group select:focus {
    border-color: #3498db;
    box-shadow: 0 0 0 2px rgba(52, 152, 219, 0.2);
}

.error-message {
    display: block;
    color: #e74c3c;
    font-size: 0.8rem;
    margin-top: 0.25rem;
    min-height: 1rem;
}

.form-actions {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
    margin-top: 2rem;
    padding-top: 1rem;
    border-top: 1px solid #eee;
}

.cancel-btn, .submit-btn {
    padding: 0.75rem 2rem;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.3s ease;
}

.cancel-btn {
    background-color: #95a5a6;
    color: white;
}

.cancel-btn:hover {
    background-color: #7f8c8d;
}

.submit-btn {
    background-color: #3498db;
    color: white;
}

.submit-btn:hover {
    background-color: #2980b9;
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    margin: 2rem 0;
    flex-wrap: wrap;
}

.pagination-btn {
    padding: 0.5rem 0.75rem;
    border: 1px solid #ddd;
    background: white;
    color: #555;
    cursor: pointer;
    border-radius: 5px;
    transition: all 0.3s ease;
    font-size: 0.9rem;
}

.pagination-btn:hover {
    background-color: #f8f9fa;
    border-color: #3498db;
}

.pagination-btn.active {
    background-color: #3498db;
    color: white;
    border-color: #3498db;
}

.pagination-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.pagination-info {
    margin: 0 1rem;
    color: #7f8c8d;
    font-size: 0.9rem;
}

/* No Results */
.no-results {
    text-align: center;
    padding: 3rem;
    color: #7f8c8d;
}

.no-results i {
    font-size: 3rem;
    margin-bottom: 1rem;
    display: block;
}

.no-results p {
    font-size: 1.1rem;
}

/* Footer */
.footer {
    background-color: #000000;
    color: white;
    padding: 1rem 0;
    margin-top: auto;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    text-align: center;
}

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

    .search-input {
        width: 200px;
    }

    .main-content {
        padding: 1rem;
    }

    .controls-bar {
        flex-direction: column;
        align-items: stretch;
    }

    .controls-left {
        justify-content: center;
    }

    .employee-grid {
        grid-template-columns: 1fr;
    }

    .filter-sidebar {
        width: 100%;
        right: -100%;
    }

    .modal-content {
        width: 95%;
        margin: 1rem;
    }

    .employee-form {
        padding: 1rem;
    }

    .form-row {
        flex-direction: column;
        gap: 0;
    }

    .form-actions {
        flex-direction: column;
    }

    .pagination {
        flex-direction: column;
        gap: 1rem;
    }
}

@media (max-width: 480px) {
    .header-title {
        font-size: 1.4rem;
    }

    .search-input {
        width: 180px;
    }

    .employee-card {
        padding: 1rem;
    }

    .employee-actions {
        flex-direction: column;
    }

    .filter-sidebar {
        width: 100vw;
    }

    .filter-content {
        padding: 1rem;
    }
}

/* Loading Animation */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid #3498db;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Utility Classes */
.hidden {
    display: none !important;
}

.text-center {
    text-align: center;
}

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }

/* Form Validation States */
.form-group input.error, .form-group select.error {
    border-color: #e74c3c;
    box-shadow: 0 0 0 2px rgba(231, 76, 60, 0.2);
}

.form-group input.success, .form-group select.success {
    border-color: #27ae60;
    box-shadow: 0 0 0 2px rgba(39, 174, 96, 0.2);
}