/* ========================================
   MedSynaptic AI Radiology - Modern UI Styles
   ======================================== */

:root {
    /* Color Palette */
    --primary-color: #2563eb;
    --primary-dark: #1e40af;
    --secondary-color: #7c3aed;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --error-color: #ef4444;
    --info-color: #3b82f6;
    
    /* Neutrals */
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --border-color: #334155;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    
    /* Borders */
    --border-radius-sm: 0.375rem;
    --border-radius-md: 0.5rem;
    --border-radius-lg: 0.75rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--text-primary);
    line-height: 1.6;
    /* Override removed - using inline styles for better control */
}

/* ========================================
   App Container
   ======================================== */

.app-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
    width: 100%;
    max-width: 100vw;
}

/* ========================================
   Header
   ======================================== */

.app-header {
    background: rgba(30, 41, 59, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    padding: var(--spacing-lg) var(--spacing-xl);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    max-width: 1600px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

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

.logo-section i {
    font-size: 2.5rem;
    color: var(--primary-color);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

.logo-text h1 {
    font-size: 1.75rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo-text p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-top: -0.25rem;
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.3);
    border-radius: var(--border-radius-md);
    font-size: 0.875rem;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--success-color);
}

.status-dot.active {
    animation: blink 2s ease-in-out infinite;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

/* ========================================
   Main Content
   ======================================== */

.main-content {
    flex: 1;
    max-width: 1600px;
    width: 100%;
    margin: 0 auto;
    padding: var(--spacing-xl);
    display: grid;
    grid-template-columns: 450px 1fr;
    gap: var(--spacing-xl);
}

/* ========================================
   Panels
   ======================================== */

.input-panel,
.results-panel {
    background: var(--bg-secondary);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.panel-header {
    padding: var(--spacing-lg);
    background: rgba(37, 99, 235, 0.1);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.panel-header h2 {
    font-size: 1.25rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.panel-header h2 i {
    color: var(--primary-color);
}

.panel-content {
    padding: var(--spacing-lg);
}

/* ========================================
   Form Elements
   ======================================== */

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

.form-label i {
    color: var(--primary-color);
}

.form-select {
    width: 100%;
    padding: var(--spacing-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    color: var(--text-primary);
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.form-select:hover {
    border-color: var(--primary-color);
}

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

/* ========================================
   Modality Selector
   ======================================== */

.modality-selector {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

.modality-btn {
    padding: var(--spacing-md);
    background: var(--bg-tertiary);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius-md);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.875rem;
    font-weight: 500;
}

.modality-btn i {
    font-size: 1.5rem;
}

.modality-btn:hover {
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

.modality-btn.active {
    background: rgba(37, 99, 235, 0.15);
    border-color: var(--primary-color);
    color: var(--primary-color);
}

/* ========================================
   Upload Area
   ======================================== */

.upload-area {
    border: 2px dashed var(--border-color);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-xl);
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

.upload-area:hover {
    border-color: var(--primary-color);
    background: rgba(37, 99, 235, 0.05);
}

.upload-area i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
}

.upload-area p {
    margin-bottom: var(--spacing-xs);
}

.upload-hint {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.upload-formats {
    color: var(--text-secondary);
    font-size: 0.75rem;
    margin-top: var(--spacing-sm);
}

.uploaded-file {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.3);
    border-radius: var(--border-radius-md);
    margin-top: var(--spacing-md);
}

.uploaded-file i {
    color: var(--success-color);
    font-size: 1.25rem;
}

.uploaded-file span {
    flex: 1;
    font-size: 0.875rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.btn-remove {
    background: none;
    border: none;
    color: var(--error-color);
    cursor: pointer;
    padding: var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    transition: background 0.3s ease;
}

.btn-remove:hover {
    background: rgba(239, 68, 68, 0.1);
}

/* ========================================
   Divider
   ======================================== */

.divider {
    display: flex;
    align-items: center;
    margin: var(--spacing-lg) 0;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.divider::before,
.divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--border-color);
}

.divider span {
    padding: 0 var(--spacing-md);
}

/* ========================================
   Buttons
   ======================================== */

.action-buttons {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: var(--spacing-md);
}

.btn {
    padding: var(--spacing-md) var(--spacing-lg);
    border: none;
    border-radius: var(--border-radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(37, 99, 235, 0.3);
}

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

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

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

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

.btn-outline:hover {
    background: rgba(37, 99, 235, 0.1);
    border-color: var(--primary-color);
}

/* ========================================
   Progress Bar
   ======================================== */

.progress-container {
    margin-top: var(--spacing-lg);
    padding: var(--spacing-md);
    background: rgba(37, 99, 235, 0.05);
    border-radius: var(--border-radius-md);
    border: 1px solid rgba(37, 99, 235, 0.2);
}

.progress-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: var(--spacing-sm);
    font-size: 0.875rem;
}

.progress-bar {
    height: 8px;
    background: var(--bg-tertiary);
    border-radius: 999px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    border-radius: 999px;
    transition: width 0.3s ease;
    width: 0%;
}

/* ========================================
   View Toggle
   ======================================== */

.view-toggle {
    display: flex;
    gap: var(--spacing-xs);
}

.view-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    font-size: 0.75rem;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.view-btn:hover {
    background: rgba(37, 99, 235, 0.1);
    border-color: var(--primary-color);
}

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

/* ========================================
   Empty State
   ======================================== */

.empty-state {
    text-align: center;
    padding: var(--spacing-xl) var(--spacing-lg);
    color: var(--text-secondary);
}

.empty-state i {
    font-size: 4rem;
    margin-bottom: var(--spacing-lg);
    opacity: 0.3;
}

.empty-state h3 {
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

/* ========================================
   Results
   ======================================== */

.metadata-bar {
    display: flex;
    gap: var(--spacing-lg);
    padding: var(--spacing-md);
    background: rgba(37, 99, 235, 0.05);
    border-radius: var(--border-radius-md);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.metadata-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.875rem;
}

.metadata-item i {
    color: var(--primary-color);
}

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

.report-section {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    overflow: hidden;
}

.section-header {
    padding: var(--spacing-md);
    background: rgba(37, 99, 235, 0.1);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 500;
    transition: background 0.3s ease;
}

.section-header:hover {
    background: rgba(37, 99, 235, 0.15);
}

.section-header i {
    transition: transform 0.3s ease;
}

.section-header.collapsed i {
    transform: rotate(-90deg);
}

.section-content {
    padding: var(--spacing-md);
    line-height: 1.8;
}

.raw-text {
    background: var(--bg-tertiary);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-md);
    white-space: pre-wrap;
    font-family: 'Courier New', monospace;
    line-height: 1.8;
}

/* ========================================
   Comparison View
   ======================================== */

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

.metric-card {
    background: var(--bg-tertiary);
    padding: var(--spacing-md);
    border-radius: var(--border-radius-md);
    border: 1px solid var(--border-color);
    text-align: center;
}

.metric-value {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.metric-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
}

.comparison-texts {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
}

.comparison-column h3 {
    font-size: 1rem;
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.comparison-text {
    background: var(--bg-tertiary);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-md);
    border: 1px solid var(--border-color);
    min-height: 300px;
    white-space: pre-wrap;
    line-height: 1.8;
    font-size: 0.875rem;
}

/* ========================================
   Export Actions
   ======================================== */

.export-actions {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
}

/* ========================================
   Toast Notifications
   ======================================== */

.toast-container {
    position: fixed;
    top: var(--spacing-xl);
    right: var(--spacing-xl);
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.toast {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-md) var(--spacing-lg);
    box-shadow: var(--shadow-xl);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    min-width: 300px;
    animation: slideIn 0.3s ease;
}

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

.toast.success {
    border-left: 4px solid var(--success-color);
}

.toast.error {
    border-left: 4px solid var(--error-color);
}

.toast.info {
    border-left: 4px solid var(--info-color);
}

.toast i {
    font-size: 1.25rem;
}

.toast.success i {
    color: var(--success-color);
}

.toast.error i {
    color: var(--error-color);
}

.toast.info i {
    color: var(--info-color);
}

/* ========================================
   Loading Overlay
   ======================================== */

.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15, 23, 42, 0.9);
    backdrop-filter: blur(5px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9998;
}

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

.loading-spinner i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
}

.loading-spinner p {
    font-size: 1.125rem;
    color: var(--text-secondary);
}

/* ========================================
   Sample Info
   ======================================== */

.sample-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.3);
    border-radius: var(--border-radius-sm);
    margin-top: var(--spacing-sm);
    font-size: 0.75rem;
    color: var(--info-color);
}

/* ========================================
   Responsive Design
   ======================================== */

@media (max-width: 1200px) {
    .main-content {
        grid-template-columns: 400px 1fr;
    }
}

@media (max-width: 992px) {
    .main-content {
        grid-template-columns: 1fr;
    }
    
    .comparison-texts {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .modality-selector {
        grid-template-columns: 1fr;
    }
    
    .export-actions {
        flex-direction: column;
    }
}