/* ===== UTILITIES ===== */
.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--gray-200);
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto var(--spacing-md);
}

/* ===== NOTIFICATIONS ===== */
.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-lg);
    color: var(--white);
    font-weight: 500;
    z-index: 1001;
    transform: translateX(100%);
    transition: transform var(--transition-normal);
    max-width: 400px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-md);
    box-shadow: var(--shadow-xl);
}

.notification-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.notification-close {
    background: none;
    border: none;
    color: var(--white);
    cursor: pointer;
    padding: var(--spacing-xs);
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
}

.notification-close:hover {
    background: rgba(255, 255, 255, 0.2);
}

.notification.show {
    transform: translateX(0);
}

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

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: var(--spacing-lg);
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .hero-text h2 {
        font-size: 2.5rem;
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-stats {
        justify-content: center;
    }
    
    .upload-actions {
        flex-direction: column;
    }
    
    .results-actions {
        flex-direction: column;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .models-grid {
        grid-template-columns: 1fr;
    }
    
    .model-stats {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--spacing-xs);
    }
    
    .stat {
        padding: var(--spacing-xs);
    }
    
    .stat-value {
        font-size: 1.1rem;
    }
    
    .stat-label {
        font-size: 0.65rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-text h2 {
        font-size: 2rem;
    }
    
    .upload-container {
        padding: var(--spacing-lg);
    }
    
    .upload-area {
        padding: var(--spacing-xl) var(--spacing-lg);
    }
    
    .model-stats {
        grid-template-columns: repeat(3, 1fr);
        gap: 2px;
    }
    
    .stat {
        padding: 4px;
    }
    
    .stat-value {
        font-size: 1rem;
    }
    
    .stat-label {
        font-size: 0.6rem;
        letter-spacing: 0.2px;
    }
    
    .modal-content {
        width: 95%;
        margin: var(--spacing-md);
    }
}

/* ===== PAGINATION STYLES ===== */
.pagination-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: var(--spacing-xl);
    padding: var(--spacing-lg);
    background: var(--surface-color);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
}

.pagination-info {
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
}

.pagination-controls {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.pagination-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    background: white;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.pagination-btn:hover {
    background: var(--gray-50);
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-1px);
}

.pagination-btn:active {
    transform: translateY(0);
}

.pagination-btn.page-btn {
    min-width: 40px;
    height: 40px;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.pagination-btn.page-btn.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    font-weight: 600;
}

.pagination-btn.page-btn.active:hover {
    background: var(--primary-600);
    border-color: var(--primary-600);
    color: white;
}

.pagination-ellipsis {
    padding: 0 var(--spacing-sm);
    color: var(--text-secondary);
    font-weight: 500;
}

/* Mobile responsive pagination */
@media (max-width: 768px) {
    .pagination-container {
        flex-direction: column;
        gap: var(--spacing-md);
        align-items: stretch;
    }
    
    .pagination-info {
        text-align: center;
        font-size: 0.8rem;
    }
    
    .pagination-controls {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .pagination-btn {
        font-size: 0.8rem;
        padding: var(--spacing-xs) var(--spacing-sm);
    }
    
    .pagination-btn.page-btn {
        min-width: 36px;
        height: 36px;
    }
}

/* ===== CLASSIFICATION KEY STYLES ===== */
.classification-key {
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.classification-key h3 {
    color: var(--text-primary);
    font-size: 1.1rem;
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.classification-key h3 i {
    color: var(--primary-color);
}

.key-items {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.key-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.key-badge {
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    font-weight: 600;
    min-width: 140px;
    text-align: center;
}

.key-badge.positive {
    background: var(--danger-light);
    color: var(--danger-color);
    border: 1px solid var(--danger-color);
}

.key-badge.negative {
    background: var(--success-light);
    color: var(--success-color);
    border: 1px solid var(--success-color);
}

.confidence-indicator {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.confidence-label {
    font-weight: 600;
    color: var(--text-primary);
    min-width: 140px;
}

.key-note {
    background: var(--gray-50);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--primary-color);
    color: var(--text-secondary);
    font-size: 0.875rem;
    line-height: 1.5;
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
}

.key-note i {
    color: var(--primary-color);
    margin-top: 2px;
    flex-shrink: 0;
}

/* ===== MODEL BREAKDOWN STYLES ===== */
.models-agreement {
    margin-top: var(--spacing-md);
    border-top: 1px solid var(--border-light);
    padding-top: var(--spacing-md);
}

.toggle-models-btn {
    background: var(--gray-50);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-xs) var(--spacing-sm);
    color: var(--text-primary);
    font-size: 0.8rem;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-sm);
}

.toggle-models-btn:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.model-breakdown {
    margin-top: var(--spacing-md);
    background: var(--gray-50);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    border: 1px solid var(--border-light);
}

.model-result {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) 0;
    border-bottom: 1px solid var(--border-light);
}

.model-result:last-child {
    border-bottom: none;
}

.model-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.model-name {
    font-weight: 600;
    font-size: 0.8rem;
    color: var(--text-primary);
}

.model-prediction {
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.7rem;
    font-weight: 600;
}

.model-prediction.positive {
    background: var(--danger-light);
    color: var(--danger-color);
}

.model-prediction.negative {
    background: var(--success-light);
    color: var(--success-color);
}

.model-probability {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 4px;
    min-width: 120px;
}

.model-probability span {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.prob-bar {
    width: 80px;
    height: 6px;
    background: var(--gray-200);
    border-radius: 3px;
    overflow: hidden;
}

.prob-fill {
    height: 100%;
    transition: width 0.3s ease;
}

.prob-fill.positive {
    background: var(--danger-color);
}

.prob-fill.negative {
    background: var(--success-color);
}

/* ===== ENHANCED CONFIDENCE STYLES ===== */
.confidence-bar {
    width: 100%;
    height: 8px;
    background: var(--gray-200);
    border-radius: 4px;
    overflow: hidden;
    margin: var(--spacing-sm) 0;
}

.confidence-fill {
    height: 100%;
    transition: width 0.6s ease;
}

.confidence-fill.high-confidence {
    background: linear-gradient(90deg, var(--success-color), var(--success-600));
}

.confidence-fill.medium-confidence {
    background: linear-gradient(90deg, var(--warning-color), var(--warning-600));
}

.confidence-fill.low-confidence {
    background: linear-gradient(90deg, var(--danger-color), var(--danger-600));
}

/* Mobile responsive adjustments */
@media (max-width: 768px) {
    .key-items {
        gap: var(--spacing-sm);
    }
    
    .key-item {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-xs);
    }
    
    .confidence-indicator {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .model-result {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-xs);
    }
    
    .model-probability {
        align-items: flex-start;
        width: 100%;
    }
    
    .prob-bar {
        width: 100%;
    }
}

/* ===== SCIENTIFIC ANALYSIS STYLES ===== */
.scientific-analysis {
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.scientific-analysis h3 {
    color: var(--text-primary);
    font-size: 1.2rem;
    margin-bottom: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.scientific-analysis h3 i {
    color: var(--primary-color);
}

.analysis-sections {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.analysis-section {
    background: white;
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
}

.analysis-section h4 {
    color: var(--text-primary);
    font-size: 1rem;
    margin-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--primary-color);
    padding-bottom: var(--spacing-xs);
}

.stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.stat-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm);
    background: var(--gray-50);
    border-radius: var(--radius-sm);
}

.stat-label {
    font-weight: 500;
    color: var(--text-secondary);
}

.stat-value {
    font-weight: 600;
    color: var(--text-primary);
}

.analysis-note {
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin-top: var(--spacing-md);
    line-height: 1.6;
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
}

.analysis-note.critical {
    background: #fef2f2;
    border: 1px solid #fecaca;
    color: #991b1b;
}

.analysis-note i {
    margin-top: 2px;
    flex-shrink: 0;
}

.analysis-warnings {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.warning-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: #fffbeb;
    border: 1px solid #fed7aa;
    border-radius: var(--radius-md);
    color: #92400e;
}

.warning-item i {
    color: #d97706;
    margin-top: 2px;
    flex-shrink: 0;
}

.recommendations {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.recommendation {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: #f0f9ff;
    border: 1px solid var(--primary-light);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.9rem;
}

.recommendation i {
    color: var(--primary-color);
    margin-top: 2px;
    flex-shrink: 0;
}

/* Mobile responsive adjustments for analysis */
@media (max-width: 768px) {
    .stat-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-sm);
    }
    
    .analysis-section {
        padding: var(--spacing-sm);
    }
    
    .analysis-note,
    .warning-item,
    .recommendation {
        flex-direction: column;
        gap: var(--spacing-xs);
    }
    
    .scientific-analysis h3 {
        font-size: 1rem;
    }