/**
 * ============================================================================
 * ICDSS - INTELLIGENT CLINICAL DECISION SUPPORT SYSTEM
 * Main Stylesheet
 * 
 * Design Principles:
 * - Clean hospital-grade aesthetic
 * - High contrast for accessibility
 * - Clear medical terminology and labeling
 * - Responsive layout
 * - Professional color scheme
 * ============================================================================
 */

/* ============================================================================
   VARIABLES & GLOBAL STYLES
   ============================================================================ */

:root {
    /* Primary Colors */
    --color-primary: #2196F3;
    --color-primary-light: #E3F2FD;
    --color-primary-dark: #1565C0;
    
    /* Status Colors */
    --color-success: #4CAF50;
    --color-warning: #FF9800;
    --color-danger: #F44336;
    --color-info: #2196F3;
    
    /* Neutral Colors */
    --color-light: #F5F5F5;
    --color-light-gray: #EEEEEE;
    --color-gray: #9E9E9E;
    --color-dark-gray: #616161;
    --color-dark: #212121;
    --color-white: #FFFFFF;
    
    /* Semantic Colors for Risk Assessment */
    --color-risk-low: #4CAF50;
    --color-risk-moderate: #FF9800;
    --color-risk-high: #F44336;
    
    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    
    /* Typography */
    --font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --font-size-sm: 12px;
    --font-size-base: 14px;
    --font-size-md: 16px;
    --font-size-lg: 20px;
    --font-size-xl: 24px;
    --font-size-xxl: 32px;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-bold: 700;
    
    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.12);
    --shadow-lg: 0 4px 12px rgba(0, 0, 0, 0.15);
    
    /* Borders & Radius */
    --border-color: #E0E0E0;
    --border-color-light: #F0F0F0;
    --border-radius: 4px;
    --border-radius-lg: 8px;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
}

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

html, body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-dark);
    background-color: var(--color-light);
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-primary-dark);
    text-decoration: underline;
}

/* ============================================================================
   LAYOUT STRUCTURE
   ============================================================================ */

.container-fluid {
    display: flex;
    flex-direction: column;
    height: 100vh;
}

.main-content {
    display: flex;
    flex: 1;
    overflow: hidden;
}

.sidebar {
    width: 220px;
    background-color: var(--color-white);
    border-right: 1px solid var(--border-color);
    overflow-y: auto;
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
}

.content-panel {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-lg);
    background-color: var(--color-light);
}

/* ============================================================================
   NAVIGATION BAR
   ============================================================================ */

.navbar-main {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-white);
    padding: var(--spacing-md) var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--shadow-md);
    flex-shrink: 0;
}

.navbar-brand {
    flex: 1;
}

.system-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    margin: 0;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.title-icon {
    font-size: var(--font-size-xl);
}

.navbar-user {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.user-info {
    color: var(--color-white);
    font-size: var(--font-size-sm);
}

.user-info strong {
    display: block;
    font-size: var(--font-size-md);
    margin-top: var(--spacing-xs);
}

.btn-logout {
    background-color: rgba(255, 255, 255, 0.2);
    color: var(--color-white);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius);
    border: 1px solid rgba(255, 255, 255, 0.3);
    font-size: var(--font-size-sm);
    cursor: pointer;
    transition: background-color var(--transition-fast);
}

.btn-logout:hover {
    background-color: rgba(255, 255, 255, 0.3);
    text-decoration: none;
    color: var(--color-white);
}

/* ============================================================================
   SIDEBAR NAVIGATION
   ============================================================================ */

.nav-section h3 {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
    color: var(--color-dark-gray);
    text-transform: uppercase;
    margin-bottom: var(--spacing-md);
    letter-spacing: 0.5px;
}

.nav-list {
    list-style: none;
}

.nav-link {
    display: block;
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--color-dark-gray);
    border-left: 3px solid transparent;
    margin-bottom: var(--spacing-xs);
    transition: all var(--transition-fast);
    font-size: var(--font-size-sm);
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-primary);
    background-color: var(--color-primary-light);
    border-left-color: var(--color-primary);
    text-decoration: none;
}

/* ============================================================================
   DASHBOARD HEADER
   ============================================================================ */

.dashboard-header {
    margin-bottom: var(--spacing-xl);
}

.dashboard-header h2 {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-sm);
    color: var(--color-dark);
}

.subtitle {
    color: var(--color-gray);
    font-size: var(--font-size-sm);
}

/* ============================================================================
   STATISTICS CARDS
   ============================================================================ */

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

.stat-card {
    background-color: var(--color-white);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.stat-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.stat-icon {
    font-size: var(--font-size-xxl);
    min-width: 50px;
    text-align: center;
}

.stat-content {
    flex: 1;
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--color-gray);
    margin-bottom: var(--spacing-xs);
    font-weight: var(--font-weight-medium);
}

.stat-value {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
}

/* ============================================================================
   PANELS / CARDS
   ============================================================================ */

.panel {
    background-color: var(--color-white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    margin-bottom: var(--spacing-lg);
    overflow: hidden;
    border: 1px solid var(--border-color-light);
}

.panel-header {
    background-color: var(--color-light);
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.panel-header h3 {
    font-size: var(--font-size-md);
    font-weight: var(--font-weight-bold);
    margin: 0;
    color: var(--color-dark);
}

.panel-description {
    font-size: var(--font-size-sm);
    color: var(--color-gray);
    margin: 0;
}

.panel-body {
    padding: var(--spacing-md);
}

.panel-primary {
    border-left: 4px solid var(--color-primary);
}

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

.panel-warning {
    border-left: 4px solid var(--color-warning);
}

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

/* ============================================================================
   GRIDS
   ============================================================================ */

.dashboard-grid,
.admin-grid,
.result-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

@media (max-width: 1200px) {
    .dashboard-grid,
    .admin-grid,
    .result-grid {
        grid-template-columns: 1fr;
    }
}

/* ============================================================================
   FORMS
   ============================================================================ */

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

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

.form-label {
    display: block;
    font-weight: var(--font-weight-medium);
    margin-bottom: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--color-dark);
}

.form-control {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    color: var(--color-dark);
    background-color: var(--color-white);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-control:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}

.form-control:disabled {
    background-color: var(--color-light);
    color: var(--color-gray);
    cursor: not-allowed;
}

.form-control::placeholder {
    color: var(--color-gray);
}

textarea.form-control {
    resize: vertical;
    font-family: var(--font-family);
}

.checkbox-group {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
    font-weight: normal;
    margin-bottom: 0;
}

.checkbox-group input[type="checkbox"] {
    cursor: pointer;
    width: 18px;
    height: 18px;
}

.form-section-header {
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--border-color);
}

.form-section-header h4 {
    font-size: var(--font-size-md);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    margin: 0;
}

.form-actions {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
    flex-wrap: wrap;
}

.form-actions button,
.form-actions a {
    flex: 1;
    min-width: 150px;
}

/* ============================================================================
   BUTTONS
   ============================================================================ */

.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-md);
    border: none;
    border-radius: var(--border-radius);
    font-family: var(--font-family);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-align: center;
    text-decoration: none;
    white-space: nowrap;
}

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

.btn-primary:hover {
    background-color: var(--color-primary-dark);
    text-decoration: none;
    box-shadow: var(--shadow-md);
}

.btn-primary:active {
    transform: translateY(1px);
}

.btn-secondary {
    background-color: var(--color-gray);
    color: var(--color-white);
}

.btn-secondary:hover {
    background-color: var(--color-dark-gray);
    text-decoration: none;
}

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

.btn-tertiary:hover {
    background-color: var(--color-primary-light);
    text-decoration: none;
}

.btn-danger {
    background-color: var(--color-danger);
    color: var(--color-white);
}

.btn-danger:hover {
    background-color: #d32f2f;
    text-decoration: none;
}

.btn-block {
    display: block;
    width: 100%;
}

.btn:disabled,
.btn.disabled {
    opacity: 0.6;
    cursor: not-allowed;
    pointer-events: none;
}

/* ============================================================================
   TABLES
   ============================================================================ */

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--font-size-sm);
}

.data-table thead {
    background-color: var(--color-light);
    border-bottom: 2px solid var(--border-color);
}

.data-table th {
    padding: var(--spacing-md);
    text-align: left;
    font-weight: var(--font-weight-bold);
    color: var(--color-dark);
}

.data-table td {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--border-color-light);
}

.data-table tbody tr {
    transition: background-color var(--transition-fast);
}

.data-table tbody tr:hover {
    background-color: var(--color-primary-light);
}

.data-table.compact td,
.data-table.compact th {
    padding: var(--spacing-sm);
    font-size: var(--font-size-sm);
}

.data-table.highlight-warning {
    background-color: rgba(255, 152, 0, 0.05);
}

/* ============================================================================
   BADGES & STATUS INDICATORS
   ============================================================================ */

.badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    text-align: center;
}

.badge-success {
    background-color: rgba(76, 175, 80, 0.2);
    color: var(--color-success);
}

.badge-danger {
    background-color: rgba(244, 67, 54, 0.2);
    color: var(--color-danger);
}

.badge-warning {
    background-color: rgba(255, 152, 0, 0.2);
    color: var(--color-warning);
}

.badge-info {
    background-color: rgba(33, 150, 243, 0.2);
    color: var(--color-info);
}

.badge-secondary {
    background-color: rgba(158, 158, 158, 0.2);
    color: var(--color-gray);
}

/* Risk Level Badges */
.badge-low {
    background-color: rgba(76, 175, 80, 0.15);
    color: var(--color-risk-low);
}

.badge-moderate {
    background-color: rgba(255, 152, 0, 0.15);
    color: var(--color-risk-moderate);
}

.badge-high {
    background-color: rgba(244, 67, 54, 0.15);
    color: var(--color-risk-high);
}

.badge.large {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-md);
}

/* ============================================================================
   RISK ASSESSMENT DISPLAY
   ============================================================================ */

.risk-score-display {
    display: flex;
    gap: var(--spacing-lg);
    align-items: center;
    margin-bottom: var(--spacing-lg);
}

.score-visualization {
    flex-shrink: 0;
}

.score-circle {
    width: 140px;
    height: 140px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-white);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    box-shadow: var(--shadow-md);
    font-weight: var(--font-weight-bold);
}

.score-number {
    font-size: var(--font-size-xxl);
    line-height: 1;
}

.score-label {
    font-size: var(--font-size-sm);
    margin-top: var(--spacing-xs);
    opacity: 0.9;
}

.risk-details {
    flex: 1;
}

.risk-level-card {
    margin-bottom: var(--spacing-md);
}

.risk-level-card label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    margin-bottom: var(--spacing-xs);
    color: var(--color-gray);
}

.risk-level-badge {
    display: inline-block;
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    font-size: var(--font-size-md);
    font-weight: var(--font-weight-bold);
}

.confidence-indicator {
    margin-top: var(--spacing-lg);
}

.confidence-indicator label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    margin-bottom: var(--spacing-sm);
    color: var(--color-gray);
}

.progress-bar {
    width: 100%;
    height: 28px;
    background-color: var(--color-light);
    border-radius: var(--border-radius);
    overflow: hidden;
    border: 1px solid var(--border-color);
    position: relative;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-success) 0%, var(--color-success) 70%, var(--color-warning) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: width var(--transition-normal);
    min-width: 30px;
}

.progress-text {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
    color: var(--color-white);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.progress-note {
    font-size: var(--font-size-sm);
    color: var(--color-gray);
    margin-top: var(--spacing-sm);
}

/* ============================================================================
   RECOMMENDATION & FACTORS
   ============================================================================ */

.recommendation-box {
    background-color: var(--color-primary-light);
    border-left: 4px solid var(--color-primary);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-lg);
}

.recommendation-content {
    color: var(--color-dark);
    line-height: 1.8;
}

.factors-section {
    margin-top: var(--spacing-lg);
}

.factors-section h4 {
    font-size: var(--font-size-md);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-md);
    color: var(--color-dark);
}

.factors-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.factor-group {
    background-color: var(--color-light);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
}

.factor-group h5 {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.factor-items {
    list-style: none;
}

.factor-items li {
    padding: var(--spacing-xs) 0;
    padding-left: var(--spacing-md);
    position: relative;
    color: var(--color-dark-gray);
    font-size: var(--font-size-sm);
}

.factor-items li:before {
    content: "→";
    position: absolute;
    left: 0;
    color: var(--color-primary);
    font-weight: bold;
}

/* ============================================================================
   ASSESSMENT DETAILS
   ============================================================================ */

.details-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.detail-section {
    background-color: var(--color-light);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
}

.detail-section h4 {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    text-transform: uppercase;
    margin-bottom: var(--spacing-md);
    letter-spacing: 0.5px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: var(--spacing-sm);
}

.detail-list {
    list-style: none;
}

.detail-list li {
    padding: var(--spacing-sm) 0;
    font-size: var(--font-size-sm);
    color: var(--color-dark);
}

.detail-list strong {
    color: var(--color-dark);
}

.clinical-notes-section {
    background-color: var(--color-light);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    border-left: 4px solid var(--color-warning);
    margin-top: var(--spacing-lg);
}

.clinical-notes-section h4 {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
    color: var(--color-warning);
    text-transform: uppercase;
    margin-bottom: var(--spacing-sm);
}

.clinical-notes-content {
    color: var(--color-dark);
    line-height: 1.8;
    white-space: pre-wrap;
}

/* ============================================================================
   PATIENT INFORMATION
   ============================================================================ */

.patient-info-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
}

.info-item {
    padding: var(--spacing-md);
    background-color: var(--color-light);
    border-radius: var(--border-radius);
}

.info-item label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);
    color: var(--color-gray);
    margin-bottom: var(--spacing-xs);
}

.info-value {
    font-size: var(--font-size-md);
    color: var(--color-dark);
    margin: 0;
}

/* ============================================================================
   LOGIN PAGE
   ============================================================================ */

.login-page {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: var(--spacing-md);
}

.login-container {
    width: 100%;
    max-width: 450px;
}

.login-box {
    background-color: var(--color-white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}

.login-header {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-white);
    padding: var(--spacing-xl);
    text-align: center;
}

.login-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

.login-subtitle {
    font-size: var(--font-size-md);
    margin-bottom: var(--spacing-sm);
}

.login-description {
    font-size: var(--font-size-sm);
    opacity: 0.9;
}

.login-form {
    padding: var(--spacing-xl);
}

.login-footer {
    padding: var(--spacing-md) var(--spacing-xl);
    background-color: var(--color-light);
    border-top: 1px solid var(--border-color);
    text-align: center;
    font-size: var(--font-size-sm);
}

.login-note {
    color: var(--color-dark-gray);
    margin: 0;
    line-height: 1.8;
}

/* ============================================================================
   ALERTS & MESSAGES
   ============================================================================ */

.alert {
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    margin-bottom: var(--spacing-md);
    border-left: 4px solid;
}

.alert-error {
    background-color: rgba(244, 67, 54, 0.1);
    border-left-color: var(--color-danger);
    color: var(--color-danger);
}

.alert-success {
    background-color: rgba(76, 175, 80, 0.1);
    border-left-color: var(--color-success);
    color: var(--color-success);
}

.alert-warning {
    background-color: rgba(255, 152, 0, 0.1);
    border-left-color: var(--color-warning);
    color: var(--color-warning);
}

.alert-info {
    background-color: rgba(33, 150, 243, 0.1);
    border-left-color: var(--color-info);
    color: var(--color-info);
}

.alert strong {
    display: block;
    margin-bottom: var(--spacing-xs);
}

/* ============================================================================
   UTILITY CLASSES
   ============================================================================ */

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

.text-muted {
    color: var(--color-gray);
}

.text-danger {
    color: var(--color-danger);
}

.text-success {
    color: var(--color-success);
}

.text-warning {
    color: var(--color-warning);
}

.text-info {
    color: var(--color-info);
}

.link-action {
    color: var(--color-primary);
    font-weight: var(--font-weight-medium);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.link-action:hover {
    color: var(--color-primary-dark);
    text-decoration: underline;
}

.suggestions-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--color-white);
    border: 1px solid var(--border-color);
    border-top: none;
    border-radius: 0 0 var(--border-radius) var(--border-radius);
    max-height: 300px;
    overflow-y: auto;
    z-index: 100;
    box-shadow: var(--shadow-md);
}

.suggestion-item {
    padding: var(--spacing-sm) var(--spacing-md);
    border-bottom: 1px solid var(--border-color-light);
    cursor: pointer;
    transition: background-color var(--transition-fast);
}

.suggestion-item:hover {
    background-color: var(--color-primary-light);
}

.placeholder-content {
    text-align: center;
    padding: var(--spacing-lg);
    background-color: var(--color-light);
    border-radius: var(--border-radius);
}

.placeholder-list {
    list-style-position: inside;
    text-align: left;
    display: inline-block;
    color: var(--color-gray);
    margin: var(--spacing-md) 0;
}

.placeholder-list li {
    padding: var(--spacing-xs) 0;
}

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

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

.info-row label {
    font-weight: var(--font-weight-medium);
    color: var(--color-dark);
}

/* ============================================================================
   RESPONSIVE DESIGN
   ============================================================================ */

@media (max-width: 1024px) {
    .sidebar {
        width: 180px;
        padding: var(--spacing-md);
    }
    
    .stats-row {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .container-fluid {
        height: auto;
    }
    
    .main-content {
        flex-direction: column;
    }
    
    .sidebar {
        width: 100%;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
        display: flex;
        justify-content: space-around;
        flex-wrap: wrap;
        padding: var(--spacing-md);
    }
    
    .nav-section {
        margin-bottom: 0;
        text-align: center;
    }
    
    .nav-section h3 {
        display: none;
    }
    
    .nav-list {
        display: flex;
        justify-content: center;
        gap: var(--spacing-md);
        flex-wrap: wrap;
    }
    
    .nav-link {
        margin-bottom: 0;
        border-left: none;
        border-bottom: 3px solid transparent;
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    .nav-link.active {
        border-left: none;
        border-bottom-color: var(--color-primary);
    }
    
    .content-panel {
        padding: var(--spacing-md);
    }
    
    .stats-row,
    .dashboard-grid,
    .admin-grid,
    .result-grid,
    .details-grid {
        grid-template-columns: 1fr;
    }
    
    .navbar-main {
        flex-direction: column;
        gap: var(--spacing-md);
        text-align: center;
    }
    
    .navbar-user {
        width: 100%;
        justify-content: space-between;
    }
    
    .form-actions {
        flex-direction: column;
    }
    
    .form-actions button,
    .form-actions a {
        width: 100%;
        min-width: auto;
    }
    
    .risk-score-display {
        flex-direction: column;
        text-align: center;
    }
    
    .score-circle {
        margin: 0 auto;
    }
}

@media (max-width: 480px) {
    :root {
        --font-size-base: 13px;
        --font-size-md: 15px;
        --spacing-md: 12px;
        --spacing-lg: 16px;
    }
    
    .navbar-main {
        padding: var(--spacing-sm) var(--spacing-md);
    }
    
    .system-title {
        font-size: var(--font-size-md);
    }
    
    .title-icon {
        font-size: var(--font-size-lg);
    }
    
    .btn {
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: var(--font-size-sm);
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .patient-info-row {
        grid-template-columns: 1fr;
    }
    
    .factors-list {
        grid-template-columns: 1fr;
    }
}

/* ============================================================================
   PRINT STYLES
   ============================================================================ */

@media print {
    .navbar-main,
    .sidebar,
    .form-actions,
    .btn-logout {
        display: none;
    }
    
    .content-panel {
        background-color: var(--color-white);
        padding: 0;
    }
    
    .panel {
        page-break-inside: avoid;
        box-shadow: none;
        border: 1px solid var(--border-color);
    }
    
    a {
        text-decoration: underline;
    }
}