:root {
    /* Core Dimensions & Transitions */
    --sidebar-width: 300px;
    --sidebar-width-collapsed: 0px;
    --header-height: 80px;
    --card-border-radius: 16px;
    --btn-border-radius: 8px;
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
    --blur-amount: 20px;

    /* Light Theme Colors */
    --bg-body-light: #f3f4f6;
    --bg-glass-light: rgba(255, 255, 255, 0.75);
    --bg-card-light: #ffffff;
    --border-light: rgba(229, 231, 235, 0.8);
    --text-primary-light: #111827;
    --text-secondary-light: #4b5563;
    --text-tertiary-light: #9ca3af;
    --shadow-sm-light: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md-light: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg-light: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    
    /* Dark Theme Colors */
    --bg-body-dark: #0f172a;
    --bg-glass-dark: rgba(30, 41, 59, 0.7);
    --bg-card-dark: #1e293b;
    --border-dark: rgba(51, 65, 85, 0.8);
    --text-primary-dark: #f8fafc;
    --text-secondary-dark: #cbd5e1;
    --text-tertiary-dark: #64748b;
    --shadow-sm-dark: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md-dark: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
    --shadow-lg-dark: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -2px rgba(0, 0, 0, 0.3);

    /* Brand & Status Colors (Universal) */
    --primary-color: #e3000b;
    --primary-hover: #c20009;
    --primary-light: rgba(227, 0, 11, 0.1);
    
    /* Status Colors: Green (Empfohlen) */
    --status-success-bg: rgba(16, 185, 129, 0.1);
    --status-success-text: #059669;
    --status-success-border: #10b981;

    /* Status Colors: Yellow/Orange (Kann) */
    --status-warning-bg: rgba(245, 158, 11, 0.1);
    --status-warning-text: #d97706;
    --status-warning-border: #f59e0b;

    /* Status Colors: Red (Nicht empfohlen) */
    --status-danger-bg: rgba(239, 68, 68, 0.1);
    --status-danger-text: #dc2626;
    --status-danger-border: #ef4444;

    /* Guideline Colors */
    --dgho-color: #2563eb;
    --awmf-color: #16a34a;
    --esmo-color: #ea580c;
}

/* Theme Mapping */
body {
    --bg-body: var(--bg-body-light);
    --bg-glass: var(--bg-glass-light);
    --bg-card: var(--bg-card-light);
    --border-color: var(--border-light);
    --text-primary: var(--text-primary-light);
    --text-secondary: var(--text-secondary-light);
    --text-tertiary: var(--text-tertiary-light);
    --shadow-sm: var(--shadow-sm-light);
    --shadow-md: var(--shadow-md-light);
    --shadow-lg: var(--shadow-lg-light);
    
    background-color: var(--bg-body);
    color: var(--text-primary);
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

body.dark-mode {
    --bg-body: var(--bg-body-dark);
    --bg-glass: var(--bg-glass-dark);
    --bg-card: var(--bg-card-dark);
    --border-color: var(--border-dark);
    --text-primary: var(--text-primary-dark);
    --text-secondary: var(--text-secondary-dark);
    --text-tertiary: var(--text-tertiary-dark);
    --shadow-sm: var(--shadow-sm-dark);
    --shadow-md: var(--shadow-md-dark);
    --shadow-lg: var(--shadow-lg-dark);
}

/* Global Resets */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

a { text-decoration: none; color: inherit; }
button { background: none; border: none; cursor: pointer; font-family: inherit; }
ul, ol { list-style: none; }

/* Animated Background */
.background-container {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    z-index: -1;
    overflow: hidden;
    pointer-events: none;
}

.background-container::before {
    content: '';
    position: absolute;
    width: 150%;
    height: 150%;
    top: -25%;
    left: -25%;
    background: 
        radial-gradient(circle at 15% 25%, rgba(227, 0, 11, 0.03), transparent 40%),
        radial-gradient(circle at 85% 30%, rgba(37, 99, 235, 0.03), transparent 40%),
        radial-gradient(circle at 50% 80%, rgba(22, 163, 74, 0.03), transparent 40%);
    filter: blur(80px);
    animation: bg-shift 60s ease-in-out infinite alternate;
}

@keyframes bg-shift {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(-2%, -2%) scale(1.05); }
}

/* Theme Toggle */
.theme-toggle {
    position: fixed;
    top: 24px;
    right: 24px;
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: var(--bg-glass);
    backdrop-filter: blur(var(--blur-amount));
    -webkit-backdrop-filter: blur(var(--blur-amount));
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 1000;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-sm);
    color: var(--text-primary);
}

.theme-toggle:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    background: var(--bg-card);
}

.theme-icon {
    width: 20px;
    height: 20px;
    position: absolute;
    transition: all var(--transition-normal);
}

.light-mode .light-icon { opacity: 1; transform: rotate(0deg) scale(1); }
.light-mode .dark-icon { opacity: 0; transform: rotate(-90deg) scale(0.5); }
.dark-mode .light-icon { opacity: 0; transform: rotate(90deg) scale(0.5); }
.dark-mode .dark-icon { opacity: 1; transform: rotate(0deg) scale(1); }

/* Layout Structure */
.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    width: var(--sidebar-width);
    background: var(--bg-glass);
    backdrop-filter: blur(var(--blur-amount));
    -webkit-backdrop-filter: blur(var(--blur-amount));
    border-right: 1px solid var(--border-color);
    z-index: 100;
    display: flex;
    flex-direction: column;
    transform: translateX(0);
    transition: transform var(--transition-normal), width var(--transition-normal);
}

.main-container {
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    position: relative;
    transition: margin-left var(--transition-normal);
}

/* Sidebar Styling */
.sidebar-header {
    padding: 24px;
    border-bottom: 1px solid var(--border-color);
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 24px;
}

.app-logo {
    width: 48px;
    height: auto;
}

.sidebar-title {
    font-size: 18px;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--text-primary);
}

.sidebar-search {
    position: relative;
}

.search-icon {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    width: 16px;
    height: 16px;
    color: var(--text-tertiary);
}

#searchInput {
    width: 100%;
    padding: 10px 12px 10px 36px;
    border: 1px solid var(--border-color);
    border-radius: var(--btn-border-radius);
    background: var(--bg-card);
    color: var(--text-primary);
    font-size: 13px;
    transition: all var(--transition-fast);
}

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

.sidebar-content {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
    scrollbar-width: thin;
    scrollbar-color: var(--border-color) transparent;
}

/* Navigation Items */
.entity-item {
    margin-bottom: 4px;
}

.entity-header {
    padding: 10px 12px;
    border-radius: var(--btn-border-radius);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: all var(--transition-fast);
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
}

.entity-header:hover {
    background: var(--bg-card);
    color: var(--text-primary);
}

.entity-header.active {
    background: var(--primary-color);
    color: #ffffff;
    box-shadow: 0 4px 12px rgba(227, 0, 11, 0.25);
}

.entity-header.active .entity-icon { color: #ffffff; }

.entity-icon {
    width: 16px;
    height: 16px;
    transition: transform var(--transition-normal);
}

.entity-item.expanded .entity-icon { transform: rotate(180deg); }

.subtypes-container {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal) cubic-bezier(0.4, 0, 0.2, 1);
    padding-left: 12px;
    border-left: 1px solid var(--border-color);
    margin-left: 18px;
    margin-top: 4px;
}

.subtype-item {
    padding: 8px 12px;
    border-radius: var(--btn-border-radius);
    cursor: pointer;
    font-size: 13px;
    color: var(--text-secondary);
    transition: all var(--transition-fast);
    margin-bottom: 2px;
}

.subtype-item:hover {
    background: var(--bg-card);
    color: var(--text-primary);
}

.subtype-item.active {
    background: var(--primary-light);
    color: var(--primary-color);
    font-weight: 600;
}

/* Main Content Header */
.guideline-header {
    position: sticky;
    top: 0;
    z-index: 90;
    background: var(--bg-glass);
    backdrop-filter: blur(var(--blur-amount));
    -webkit-backdrop-filter: blur(var(--blur-amount));
    border-bottom: 1px solid var(--border-color);
    padding: 32px 40px 0 40px;
}

.entity-info { margin-bottom: 24px; }

.entity-title {
    font-size: 28px;
    font-weight: 800;
    letter-spacing: -0.03em;
    color: var(--text-primary);
    line-height: 1.2;
    margin-bottom: 8px;
}

.entity-subtitle {
    font-size: 15px;
    color: var(--text-secondary);
    font-weight: 400;
}

/* Society Tabs */
.society-tabs {
    display: flex;
    gap: 8px;
    position: relative;
    margin-bottom: -1px; /* Overlap border */
}

.society-tab {
    padding: 12px 20px;
    border-radius: 8px 8px 0 0;
    cursor: pointer;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-tertiary);
    border: 1px solid transparent;
    border-bottom: none;
    transition: all var(--transition-fast);
    background: transparent;
}

.society-tab:hover {
    color: var(--text-primary);
    background: rgba(0,0,0,0.02);
}

body.dark-mode .society-tab:hover { background: rgba(255,255,255,0.02); }

.society-tab.active {
    background: var(--bg-body); /* Match body background */
    color: var(--text-primary);
    border-color: var(--border-color);
    border-bottom: 1px solid var(--bg-body); /* Hide bottom border */
}

.society-tab.dgho.active { color: var(--dgho-color); border-top: 2px solid var(--dgho-color); }
.society-tab.awmf-dkg.active { color: var(--awmf-color); border-top: 2px solid var(--awmf-color); }
.society-tab.esmo.active { color: var(--esmo-color); border-top: 2px solid var(--esmo-color); }

.tab-version {
    display: block;
    font-size: 11px;
    font-weight: 400;
    opacity: 0.7;
    margin-top: 2px;
}

/* Filter Bar */
.filter-bar {
    display: none; /* Hidden by default */
    padding: 16px 0;
    border-top: 1px solid var(--border-color);
    gap: 24px;
    align-items: center;
    flex-wrap: wrap;
}

.filter-bar.visible { display: flex; }

.filter-group {
    display: flex;
    align-items: center;
    gap: 12px;
}

.filter-label {
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 600;
    color: var(--text-tertiary);
}

.filter-options {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 6px 12px;
    font-size: 12px;
    font-weight: 500;
    border-radius: 20px;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    background: var(--bg-card);
    transition: all var(--transition-fast);
}

.filter-btn:hover {
    border-color: var(--text-tertiary);
    color: var(--text-primary);
}

.filter-btn.active {
    background: var(--text-primary);
    color: var(--bg-card);
    border-color: var(--text-primary);
}

/* Search & Sort in Filter Bar */
.search-sort-group {
    margin-left: auto;
    display: flex;
    gap: 16px;
}

.card-search-wrapper {
    position: relative;
    width: 200px;
}

.card-search-icon {
    position: absolute;
    left: 10px;
    top: 50%;
    transform: translateY(-50%);
    width: 14px;
    height: 14px;
    color: var(--text-tertiary);
}

#cardSearchInput {
    width: 100%;
    padding: 8px 10px 8px 32px;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    background: var(--bg-card);
    color: var(--text-primary);
    font-size: 12px;
}

.sort-wrapper {
    position: relative;
}

.sort-icon {
    position: absolute;
    left: 10px;
    top: 50%;
    transform: translateY(-50%);
    width: 14px;
    height: 14px;
    color: var(--text-tertiary);
    pointer-events: none;
}

#sortSelect {
    padding: 8px 32px 8px 32px;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    background: var(--bg-card);
    color: var(--text-primary);
    font-size: 12px;
    appearance: none;
    cursor: pointer;
    min-width: 160px;
}

/* Guideline Content Area */
.guideline-container {
    padding: 40px;
    max-width: 1600px;
    margin: 0 auto;
    width: 100%;
}

/* Welcome Screen */
.welcome-screen {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 60vh;
    text-align: center;
}

.welcome-screen.hidden { display: none; }

.welcome-content {
    background: var(--bg-glass);
    padding: 60px;
    border-radius: 32px;
    border: 1px solid var(--border-color);
    max-width: 600px;
}

.welcome-content h2 {
    font-size: 24px;
    font-weight: 700;
    margin: 24px 0 12px;
    color: var(--text-primary);
}

/* Timeline & Phases */
.timeline-container {
    padding-bottom: 100px;
}

.clinical-phase {
    margin-bottom: 64px;
}

.phase-header {
    display: flex;
    align-items: center;
    margin-bottom: 32px;
    position: relative;
}

.phase-line {
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--border-color);
    z-index: 0;
}

.phase-header-content {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    gap: 16px;
    padding-right: 16px;
    background: var(--bg-body); /* Mask the line */
}

.phase-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 8px 20px;
    border-radius: 100px;
    box-shadow: var(--shadow-sm);
}

.expand-toggle-btn {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-tertiary);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 6px 12px;
    border-radius: 100px;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: all var(--transition-fast);
}

.expand-toggle-btn:hover {
    color: var(--text-primary);
    border-color: var(--text-secondary);
}

.expand-toggle-btn svg { width: 14px; height: 14px; }

/* Recommendation Cards - Redesigned */
.recommendations-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 24px;
}

.recommendation-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--card-border-radius);
    overflow: hidden;
    transition: all var(--transition-normal);
    position: relative;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-sm);
}

.recommendation-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--text-tertiary);
}

/* Status Indicators */
.recommendation-card::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    z-index: 2;
}

.recommendation-card.empfohlen::before, .recommendation-card.soll::before, .recommendation-card.obligat::before {
    background-color: var(--status-success-border);
}

.recommendation-card.kann-erwogen-werden::before, .recommendation-card.optional::before, .recommendation-card.fakultativ::before {
    background-color: var(--status-warning-border);
}

.recommendation-card.nicht-empfohlen::before, .recommendation-card.sollte-nicht::before {
    background-color: var(--status-danger-border);
}

/* Card Header */
.recommendation-header {
    padding: 20px;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 16px;
    cursor: pointer;
    background: linear-gradient(to right, var(--bg-card), rgba(255,255,255,0.02));
}

.procedure-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.procedure-name {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.4;
}

.recommendation-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
}

.strength-text {
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 2px 0;
}

.strength-text.empfohlen, .strength-text.soll, .strength-text.obligat { color: var(--status-success-text); }
.strength-text.kann-erwogen-werden, .strength-text.optional, .strength-text.fakultativ { color: var(--status-warning-text); }
.strength-text.nicht-empfohlen, .strength-text.sollte-nicht { color: var(--status-danger-text); }

.evidence-badge {
    font-size: 10px;
    font-weight: 600;
    color: var(--text-secondary);
    background: rgba(0,0,0,0.05);
    border: 1px solid var(--border-color);
    padding: 2px 8px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    gap: 4px;
}

body.dark-mode .evidence-badge { background: rgba(255,255,255,0.05); }

.info-icon {
    width: 12px;
    height: 12px;
    opacity: 0.5;
    cursor: help;
}

.info-icon:hover { opacity: 1; color: var(--primary-color); }

.modality-badge {
    font-size: 11px;
    font-weight: 600;
    background: var(--bg-body);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 4px 10px;
    border-radius: 6px;
    align-self: flex-start;
    margin-top: 4px;
}

/* Header Actions */
.recommendation-header-actions {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
}

.strength-indicator {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 900;
}

.strength-indicator.empfohlen, .strength-indicator.soll, .strength-indicator.obligat {
    background: var(--status-success-bg);
    color: var(--status-success-text);
    border: 1px solid var(--status-success-border);
}

.strength-indicator.kann-erwogen-werden, .strength-indicator.optional, .strength-indicator.fakultativ {
    background: var(--status-warning-bg);
    color: var(--status-warning-text);
    border: 1px solid var(--status-warning-border);
}

.strength-indicator.nicht-empfohlen, .strength-indicator.sollte-nicht {
    background: var(--status-danger-bg);
    color: var(--status-danger-text);
    border: 1px solid var(--status-danger-border);
}

.add-to-path-btn {
    width: 32px;
    height: 32px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    background: var(--bg-body);
    color: var(--text-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.add-to-path-btn:hover {
    color: var(--primary-color);
    border-color: var(--primary-color);
    background: var(--primary-light);
}

.add-to-path-btn.added {
    background: var(--status-success-text);
    color: white;
    border-color: var(--status-success-text);
}

.add-to-path-btn svg { width: 16px; height: 16px; }

/* Card Body (Expandable) */
.recommendation-body {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal) cubic-bezier(0.4, 0, 0.2, 1);
    background: var(--bg-body);
    border-top: 1px solid var(--border-color);
}

.recommendation-card.expanded .recommendation-body {
    max-height: 1000px;
}

.recommendation-body-content {
    padding: 20px;
}

.recommendation-details {
    display: grid;
    grid-template-columns: min-content 1fr;
    gap: 12px 24px;
    font-size: 13px;
    margin-bottom: 20px;
}

.detail-item { display: contents; }

.detail-label {
    font-weight: 600;
    color: var(--text-tertiary);
    white-space: nowrap;
}

.detail-value {
    color: var(--text-primary);
}

/* Toggles inside card */
.justification-container, .source-text-container {
    border-top: 1px solid var(--border-color);
    padding-top: 16px;
    margin-top: 16px;
}

.justification-toggle, .source-text-toggle {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    width: 100%;
    text-align: left;
    transition: color var(--transition-fast);
}

.justification-toggle:hover, .source-text-toggle:hover {
    color: var(--primary-color);
}

.justification-toggle svg, .source-text-toggle svg {
    width: 16px;
    height: 16px;
    transition: transform var(--transition-fast);
}

.justification-container.expanded .justification-toggle svg, 
.source-text-container.expanded .source-text-toggle svg {
    transform: rotate(180deg);
}

.justification-content, .source-text-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal);
    font-size: 13px;
    line-height: 1.6;
    color: var(--text-secondary);
    margin-top: 0;
}

.justification-container.expanded .justification-content,
.source-text-container.expanded .source-text-content {
    margin-top: 12px;
}

.source-text-content p {
    background: var(--bg-card);
    padding: 12px;
    border-radius: 8px;
    border-left: 3px solid var(--text-tertiary);
    font-style: italic;
}

/* Floating Action Button */
.patient-path-fab {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 56px;
    height: 56px;
    border-radius: 16px;
    background: var(--primary-color);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 10px 25px rgba(227, 0, 11, 0.4);
    cursor: pointer;
    z-index: 100;
    transition: all var(--transition-normal);
    transform: translateY(100px);
    opacity: 0;
}

.patient-path-fab.visible {
    transform: translateY(0);
    opacity: 1;
}

.patient-path-fab:hover {
    transform: translateY(-4px) scale(1.05);
    box-shadow: 0 15px 35px rgba(227, 0, 11, 0.5);
}

.path-count {
    position: absolute;
    top: -6px;
    right: -6px;
    background: var(--bg-card);
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    font-size: 12px;
    font-weight: 700;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Path Modal */
.path-modal-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.6);
    backdrop-filter: blur(4px);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-normal);
}

.path-modal-overlay.visible { opacity: 1; pointer-events: all; }

.path-modal {
    width: 90%;
    max-width: 900px;
    height: 85vh;
    background: var(--bg-card);
    border-radius: 24px;
    box-shadow: var(--shadow-lg);
    display: flex;
    flex-direction: column;
    transform: scale(0.95);
    transition: transform var(--transition-normal);
    border: 1px solid var(--border-color);
}

.path-modal-overlay.visible .path-modal { transform: scale(1); }

.path-modal-header {
    padding: 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.path-modal-title { font-size: 20px; font-weight: 700; }

.path-modal-actions { display: flex; gap: 12px; }

.path-action-btn {
    padding: 8px 16px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    background: var(--bg-body);
    color: var(--text-secondary);
    font-size: 13px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all var(--transition-fast);
}

.path-action-btn:hover {
    background: var(--bg-glass);
    color: var(--text-primary);
    border-color: var(--text-tertiary);
}

.path-action-btn.clear {
    color: var(--status-danger-text);
    border-color: var(--status-danger-border);
    background: var(--status-danger-bg);
}

.path-action-btn.clear:hover { background: var(--status-danger-text); color: white; }

.path-modal-content {
    flex: 1;
    overflow-y: auto;
    padding: 24px;
}

.path-item {
    background: var(--bg-body);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 16px;
    margin-bottom: 16px;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 16px;
}

.path-item-details h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 8px;
}

.path-item-info {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.5;
}

.path-item-remove-btn {
    color: var(--text-tertiary);
    padding: 8px;
    border-radius: 8px;
    transition: all var(--transition-fast);
}

.path-item-remove-btn:hover {
    background: var(--status-danger-bg);
    color: var(--status-danger-text);
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: var(--bg-body);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: opacity var(--transition-normal);
}

.loading-overlay:not(.active) { opacity: 0; pointer-events: none; }

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* Tooltip */
.recommendation-tooltip {
    position: absolute;
    background: rgba(0, 0, 0, 0.9);
    color: white;
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 12px;
    line-height: 1.4;
    max-width: 250px;
    z-index: 9999;
    pointer-events: none;
    box-shadow: var(--shadow-lg);
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        box-shadow: var(--shadow-lg);
    }

    .sidebar.open { transform: translateX(0); }
    
    .main-container { margin-left: 0; }
    
    .main-container.sidebar-open::after {
        content: '';
        position: absolute;
        top: 0; left: 0; right: 0; bottom: 0;
        background: rgba(0,0,0,0.5);
        z-index: 99;
        backdrop-filter: blur(4px);
    }

    .mobile-nav-toggle {
        display: flex;
        align-items: center;
        justify-content: center;
        position: fixed;
        top: 20px;
        left: 20px;
        z-index: 101;
        width: 44px;
        height: 44px;
        border-radius: 12px;
        background: var(--bg-glass);
        border: 1px solid var(--border-color);
        color: var(--text-primary);
        backdrop-filter: blur(var(--blur-amount));
    }

    .guideline-header {
        padding: 80px 20px 0 20px;
    }

    .guideline-container { padding: 20px; }

    .recommendations-grid { grid-template-columns: 1fr; }
    
    .filter-bar { flex-direction: column; align-items: stretch; }
    .search-sort-group { margin-left: 0; flex-direction: column; }
    .card-search-wrapper { width: 100%; }
    #sortSelect { width: 100%; }
    
    .path-modal { width: 100%; height: 100%; border-radius: 0; }
    .path-modal-header { flex-direction: column; gap: 16px; align-items: flex-start; }
    .path-modal-actions { width: 100%; justify-content: space-between; }
    .path-action-btn span { display: none; } /* Hide text on mobile */
}

/* Print Styles */
@media print {
    .sidebar, .theme-toggle, .mobile-nav-toggle, .patient-path-fab, .guideline-header { display: none; }
    .main-container { margin: 0; }
    .guideline-container { padding: 0; }
    .recommendation-card { break-inside: avoid; border: 1px solid #000; box-shadow: none; margin-bottom: 20px; }
    .recommendation-body { max-height: none !important; }
    body { background: white; color: black; }
    .path-modal { position: static; width: 100%; height: auto; box-shadow: none; border: none; }
    .path-modal-overlay { position: static; opacity: 1; display: block; background: white; }
    .path-print-header { display: block; margin-bottom: 20px; border-bottom: 2px solid black; }
    .path-modal-actions, .path-modal-close { display: none; }
}