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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: #333;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

/* Header Styles */
.header {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 15px;
    padding: 30px;
    margin-bottom: 30px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    text-align: center;
}

.header-content h1 {
    color: #2c3e50;
    font-size: 2.5rem;
    margin-bottom: 10px;
    font-weight: 700;
}

.header-content h1 i {
    color: #3498db;
    margin-right: 15px;
}

.header-content p {
    color: #7f8c8d;
    font-size: 1.1rem;
}

/* Navigation Tabs */
.nav-tabs {
    display: flex;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 15px;
    padding: 10px;
    margin-bottom: 30px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    overflow-x: auto;
}

.nav-tab {
    flex: 1;
    padding: 15px 25px;
    border: none;
    background: transparent;
    color: #7f8c8d;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    border-radius: 10px;
    transition: all 0.3s ease;
    white-space: nowrap;
    margin: 0 5px;
}

.nav-tab:hover {
    background: rgba(52, 152, 219, 0.1);
    color: #3498db;
}

.nav-tab.active {
    background: linear-gradient(135deg, #3498db, #2980b9);
    color: white;
    box-shadow: 0 5px 15px rgba(52, 152, 219, 0.3);
}

.nav-tab i {
    margin-right: 8px;
}

/* Tab Content */
.tab-content {
    display: none;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 15px;
    padding: 30px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    animation: fadeIn 0.5s ease;
}

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

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Search Section */
.search-section h2 {
    color: #2c3e50;
    margin-bottom: 25px;
    font-size: 1.8rem;
}

.search-section h2 i {
    color: #3498db;
    margin-right: 10px;
}

.search-form {
    margin-bottom: 30px;
}

.search-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 15px;
}

.search-buttons .btn {
    flex: 1;
    min-width: 150px;
    font-size: 0.9rem;
    padding: 10px 15px;
}

.search-buttons .btn-secondary {
    background: linear-gradient(135deg, #74b9ff, #0984e3);
    border: none;
    color: white;
}

.search-buttons .btn-secondary:hover {
    background: linear-gradient(135deg, #0984e3, #74b9ff);
    transform: translateY(-2px);
}

.form-group {
    flex: 1;
    min-width: 200px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #2c3e50;
}

/* Input with button layout */
.input-with-button {
    display: flex;
    gap: 10px;
    align-items: flex-end;
}

.input-with-button .form-input {
    flex: 1;
}

.input-with-button .btn {
    white-space: nowrap;
    height: 40px;
    padding: 8px 16px;
}

.form-input, .form-select {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #e1e8ed;
    border-radius: 8px;
    font-size: 1rem;
    transition: all 0.3s ease;
    background: white;
}

.form-input:focus, .form-select:focus {
    outline: none;
    border-color: #3498db;
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

/* Buttons */
.btn {
    padding: 12px 25px;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, #3498db, #2980b9);
    color: white;
}

.btn-primary:hover {
    background: linear-gradient(135deg, #2980b9, #1f4e79);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(52, 152, 219, 0.3);
}

.btn-success {
    background: linear-gradient(135deg, #27ae60, #229954);
    color: white;
}

.btn-success:hover {
    background: linear-gradient(135deg, #229954, #1e8449);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(39, 174, 96, 0.3);
}

.btn-warning {
    background: linear-gradient(135deg, #f39c12, #e67e22);
    color: white;
}

.btn-warning:hover {
    background: linear-gradient(135deg, #e67e22, #d35400);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(243, 156, 18, 0.3);
}

/* Search Results */
.search-results {
    margin-top: 30px;
}

.result-card {
    background: white;
    border-radius: 10px;
    padding: 20px;
    margin-bottom: 15px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    border-left: 4px solid #3498db;
    transition: transform 0.3s ease;
}

.result-card:hover {
    transform: translateY(-2px);
}

.result-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.result-card h3 {
    color: #2c3e50;
    margin: 0;
    font-size: 1.3rem;
}

.source-badge {
    background: linear-gradient(135deg, #74b9ff, #0984e3);
    color: white;
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.result-actions {
    margin-top: 15px;
    padding-top: 15px;
    border-top: 1px solid #ecf0f1;
}

.btn-sm {
    padding: 8px 16px;
    font-size: 0.9rem;
}

.result-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 15px;
}

.info-item {
    display: flex;
    flex-direction: column;
}

.info-label {
    font-weight: 600;
    color: #7f8c8d;
    font-size: 0.9rem;
    margin-bottom: 5px;
}

.info-value {
    color: #2c3e50;
    font-size: 1rem;
}

/* Template Forms */
.template-form {
    background: #f8f9fa;
    border-radius: 10px;
    padding: 25px;
    margin-top: 20px;
    border: 1px solid #e9ecef;
}

.template-form h3 {
    color: #2c3e50;
    margin-bottom: 20px;
    font-size: 1.5rem;
    border-bottom: 2px solid #3498db;
    padding-bottom: 10px;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin-bottom: 20px;
}

/* Import Section */
.import-section h2 {
    color: #2c3e50;
    margin-bottom: 25px;
    font-size: 1.8rem;
}

.import-section h2 i {
    color: #3498db;
    margin-right: 10px;
}

.import-info {
    background: #e8f4fd;
    border: 1px solid #bee5eb;
    border-radius: 8px;
    padding: 15px;
    margin-bottom: 30px;
    color: #0c5460;
}

.import-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.import-card {
    background: white;
    border-radius: 10px;
    padding: 25px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    border: 1px solid #e9ecef;
}

.import-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.import-card h3 {
    color: #2c3e50;
    margin-bottom: 10px;
    font-size: 1.3rem;
}

.import-card p {
    color: #7f8c8d;
    margin-bottom: 20px;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    animation: fadeIn 0.3s ease;
}

.modal-content {
    background-color: white;
    margin: 15% auto;
    padding: 30px;
    border-radius: 15px;
    width: 300px;
    text-align: center;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

.loading-spinner {
    border: 4px solid #f3f3f3;
    border-top: 4px solid #3498db;
    border-radius: 50%;
    width: 50px;
    height: 50px;
    animation: spin 1s linear infinite;
    margin: 0 auto 20px;
}

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

/* Message Container */
.message-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 1001;
    max-width: 400px;
}

.message {
    padding: 15px 20px;
    margin-bottom: 10px;
    border-radius: 8px;
    font-weight: 600;
    animation: slideIn 0.3s ease;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.message.success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.message.error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.message.info {
    background: #d1ecf1;
    color: #0c5460;
    border: 1px solid #bee5eb;
}

@keyframes slideIn {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

/* Import Results */
.import-results {
    margin-top: 30px;
}

.import-result {
    background: white;
    border-radius: 10px;
    padding: 20px;
    margin-bottom: 15px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    border-left: 4px solid #27ae60;
}

.import-result h4 {
    color: #2c3e50;
    margin-bottom: 10px;
}

.import-result p {
    color: #7f8c8d;
    margin-bottom: 5px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 10px;
    }
    
    .header-content h1 {
        font-size: 2rem;
    }
    
    .nav-tabs {
        flex-direction: column;
    }
    
    .nav-tab {
        margin: 5px 0;
    }
    
    .search-form {
        flex-direction: column;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .import-options {
        grid-template-columns: 1fr;
    }
    
    .result-info {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .header {
        padding: 20px;
    }
    
    .tab-content {
        padding: 20px;
    }
    
    .template-form {
        padding: 20px;
    }
    
    .import-card {
        padding: 20px;
    }
}

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-3 { margin-top: 1rem; }
.mt-4 { margin-top: 1.5rem; }
.mt-5 { margin-top: 3rem; }

.mb-1 { margin-bottom: 0.25rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 1rem; }
.mb-4 { margin-bottom: 1.5rem; }
.mb-5 { margin-bottom: 3rem; }

.p-1 { padding: 0.25rem; }
.p-2 { padding: 0.5rem; }
.p-3 { padding: 1rem; }
.p-4 { padding: 1.5rem; }
.p-5 { padding: 3rem; }

.hidden { display: none !important; }
.visible { display: block !important; }

/* Loading States */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

/* Success/Error States */
.success-state {
    border-color: #27ae60 !important;
    background-color: #d4edda !important;
}

.error-state {
    border-color: #e74c3c !important;
    background-color: #f8d7da !important;
}

/* Classification Status */
.info-value.classified {
    color: #27ae60;
    font-weight: 600;
}

.info-value.unclassified {
    color: #e74c3c;
    font-weight: 600;
}

.info-value.classified i {
    margin-right: 5px;
}

.info-value.unclassified i {
    margin-right: 5px;
}

/* Export Cards */
.export-card {
    background: white;
    border-radius: 10px;
    padding: 25px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    text-align: center;
    transition: transform 0.3s ease;
}

.export-card:hover {
    transform: translateY(-5px);
}

.export-card h3 {
    color: #2c3e50;
    margin-bottom: 10px;
    font-size: 1.3rem;
}

.export-card p {
    color: #7f8c8d;
    margin-bottom: 20px;
    line-height: 1.5;
}

.export-card.export-all {
    background: linear-gradient(135deg, #27ae60, #2ecc71);
    color: white;
}

.export-card.export-all h3 {
    color: white;
}

.export-card.export-all p {
    color: rgba(255, 255, 255, 0.9);
}

.export-card.google-sync {
    background: linear-gradient(135deg, #4285f4, #34a853);
    color: white;
}

.export-card.google-sync h3 {
    color: white;
}

.export-card.google-sync p {
    color: rgba(255, 255, 255, 0.9);
}

.sync-note {
    font-size: 0.9rem;
    font-style: italic;
    margin-top: 10px;
    color: rgba(255, 255, 255, 0.8) !important;
}