/**
 * Benefits Management Explorer - Main Stylesheet
 * Professional interactive visualization for PMI Standards
 */

/* ============================================
   CSS CUSTOM PROPERTIES (Design Tokens)
   ============================================ */
:root {
    /* Document Colors */
    --bme-br-primary: #2563eb;
    --bme-br-secondary: #3b82f6;
    --bme-br-bg: #eff6ff;
    --bme-br-border: #93c5fd;
    
    --bme-bmp-primary: #16a34a;
    --bme-bmp-secondary: #22c55e;
    --bme-bmp-bg: #f0fdf4;
    --bme-bmp-border: #86efac;
    
    --bme-brp-primary: #ea580c;
    --bme-brp-secondary: #f97316;
    --bme-brp-bg: #fff7ed;
    --bme-brp-border: #fdba74;
    
    /* Shared Colors */
    --bme-shared-all: #7c3aed;
    --bme-shared-all-bg: #f5f3ff;
    --bme-shared-two: #0891b2;
    --bme-shared-two-bg: #ecfeff;
    
    /* Lifecycle Phase Colors */
    --bme-phase-identification: #06b6d4;
    --bme-phase-analysis: #8b5cf6;
    --bme-phase-delivery: #10b981;
    --bme-phase-transition: #f59e0b;
    --bme-phase-sustainment: #ef4444;
    
    /* Neutral Colors */
    --bme-gray-50: #f9fafb;
    --bme-gray-100: #f3f4f6;
    --bme-gray-200: #e5e7eb;
    --bme-gray-300: #d1d5db;
    --bme-gray-400: #9ca3af;
    --bme-gray-500: #6b7280;
    --bme-gray-600: #4b5563;
    --bme-gray-700: #374151;
    --bme-gray-800: #1f2937;
    --bme-gray-900: #111827;
    
    /* Typography */
    --bme-font-display: 'Playfair Display', Georgia, serif;
    --bme-font-body: 'Source Sans Pro', -apple-system, BlinkMacSystemFont, sans-serif;
    --bme-font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    
    /* Spacing */
    --bme-spacing-xs: 0.25rem;
    --bme-spacing-sm: 0.5rem;
    --bme-spacing-md: 1rem;
    --bme-spacing-lg: 1.5rem;
    --bme-spacing-xl: 2rem;
    --bme-spacing-2xl: 3rem;
    
    /* Border Radius */
    --bme-radius-sm: 0.375rem;
    --bme-radius-md: 0.5rem;
    --bme-radius-lg: 0.75rem;
    --bme-radius-xl: 1rem;
    --bme-radius-full: 9999px;
    
    /* Shadows */
    --bme-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --bme-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --bme-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --bme-shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --bme-shadow-glow-br: 0 0 20px rgba(37, 99, 235, 0.3);
    --bme-shadow-glow-bmp: 0 0 20px rgba(22, 163, 74, 0.3);
    --bme-shadow-glow-brp: 0 0 20px rgba(234, 88, 12, 0.3);
    
    /* Transitions */
    --bme-transition-fast: 150ms ease;
    --bme-transition-base: 250ms ease;
    --bme-transition-slow: 400ms ease;
    --bme-transition-spring: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* ============================================
   BASE STYLES & RESET
   ============================================ */
.bme-explorer {
    font-family: var(--bme-font-body);
    font-size: 16px;
    line-height: 1.6;
    color: var(--bme-gray-800);
    background: linear-gradient(135deg, var(--bme-gray-50) 0%, #ffffff 100%);
    border-radius: var(--bme-radius-xl);
    overflow: hidden;
    box-shadow: var(--bme-shadow-xl);
}

.bme-explorer * {
    box-sizing: border-box;
}

/* ============================================
   HEADER & NAVIGATION
   ============================================ */
.bme-header {
    background: linear-gradient(135deg, var(--bme-gray-900) 0%, var(--bme-gray-800) 100%);
    padding: var(--bme-spacing-lg) var(--bme-spacing-xl);
    position: relative;
    overflow: hidden;
}

.bme-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(37, 99, 235, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 50%, rgba(22, 163, 74, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 50% 100%, rgba(234, 88, 12, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.bme-header-content {
    position: relative;
    z-index: 1;
}

.bme-title {
    font-family: var(--bme-font-display);
    font-size: 2rem;
    font-weight: 700;
    color: #ffffff;
    margin: 0 0 var(--bme-spacing-sm);
    letter-spacing: -0.02em;
}

.bme-subtitle {
    font-size: 0.95rem;
    color: var(--bme-gray-400);
    margin: 0;
}

/* Tab Navigation */
.bme-tabs {
    display: flex;
    gap: var(--bme-spacing-xs);
    padding: var(--bme-spacing-md) var(--bme-spacing-xl);
    background: var(--bme-gray-100);
    border-bottom: 1px solid var(--bme-gray-200);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.bme-tab {
    display: flex;
    align-items: center;
    gap: var(--bme-spacing-sm);
    padding: var(--bme-spacing-sm) var(--bme-spacing-lg);
    border: none;
    background: transparent;
    color: var(--bme-gray-600);
    font-family: var(--bme-font-body);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    border-radius: var(--bme-radius-md);
    transition: all var(--bme-transition-fast);
    white-space: nowrap;
}

.bme-tab:hover {
    background: var(--bme-gray-200);
    color: var(--bme-gray-800);
}

.bme-tab.active {
    background: #ffffff;
    color: var(--bme-gray-900);
    box-shadow: var(--bme-shadow-sm);
}

.bme-tab-icon {
    width: 18px;
    height: 18px;
    stroke-width: 2;
}

/* ============================================
   MAIN CONTENT AREA
   ============================================ */
.bme-content {
    min-height: 600px;
    position: relative;
}

.bme-panel {
    display: none;
    padding: var(--bme-spacing-xl);
    animation: bme-fadeIn 0.3s ease;
}

.bme-panel.active {
    display: block;
}

@keyframes bme-fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ============================================
   OVERVIEW PANEL
   ============================================ */
.bme-overview {
    display: grid;
    gap: var(--bme-spacing-xl);
}

/* Formula Cards */
.bme-formula-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--bme-spacing-lg);
}

.bme-formula-card {
    background: #ffffff;
    border-radius: var(--bme-radius-lg);
    padding: var(--bme-spacing-lg);
    border: 2px solid transparent;
    transition: all var(--bme-transition-base);
    position: relative;
    overflow: hidden;
}

.bme-formula-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
}

.bme-formula-card.br { border-color: var(--bme-br-border); }
.bme-formula-card.br::before { background: var(--bme-br-primary); }
.bme-formula-card.br:hover { box-shadow: var(--bme-shadow-glow-br); }

.bme-formula-card.bmp { border-color: var(--bme-bmp-border); }
.bme-formula-card.bmp::before { background: var(--bme-bmp-primary); }
.bme-formula-card.bmp:hover { box-shadow: var(--bme-shadow-glow-bmp); }

.bme-formula-card.brp { border-color: var(--bme-brp-border); }
.bme-formula-card.brp::before { background: var(--bme-brp-primary); }
.bme-formula-card.brp:hover { box-shadow: var(--bme-shadow-glow-brp); }

.bme-formula-card-header {
    display: flex;
    align-items: center;
    gap: var(--bme-spacing-md);
    margin-bottom: var(--bme-spacing-md);
}

.bme-formula-card-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--bme-radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.bme-formula-card.br .bme-formula-card-icon { background: var(--bme-br-bg); color: var(--bme-br-primary); }
.bme-formula-card.bmp .bme-formula-card-icon { background: var(--bme-bmp-bg); color: var(--bme-bmp-primary); }
.bme-formula-card.brp .bme-formula-card-icon { background: var(--bme-brp-bg); color: var(--bme-brp-primary); }

.bme-formula-card-title {
    font-family: var(--bme-font-display);
    font-size: 1.25rem;
    font-weight: 600;
    margin: 0;
}

.bme-formula-card-badge {
    font-size: 0.7rem;
    padding: 2px 8px;
    border-radius: var(--bme-radius-full);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.bme-badge-standard {
    background: #dcfce7;
    color: #166534;
}

.bme-badge-teaching {
    background: #fef3c7;
    color: #92400e;
}

.bme-formula-card-formula {
    font-size: 1.1rem;
    color: var(--bme-gray-700);
    margin: var(--bme-spacing-md) 0;
    padding: var(--bme-spacing-md);
    background: var(--bme-gray-50);
    border-radius: var(--bme-radius-md);
    font-style: italic;
}

.bme-formula-card-purpose {
    font-size: 0.9rem;
    color: var(--bme-gray-600);
    margin: 0;
}

/* ============================================
   COMPARISON MIRROR VIEW
   ============================================ */
.bme-compare-container {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: var(--bme-spacing-lg);
    min-height: 500px;
}

@media (max-width: 1024px) {
    .bme-compare-container {
        grid-template-columns: 1fr;
    }
}

/* Document Columns */
.bme-doc-column {
    background: #ffffff;
    border-radius: var(--bme-radius-lg);
    overflow: hidden;
    border: 2px solid var(--bme-gray-200);
    transition: all var(--bme-transition-base);
}

.bme-doc-column:hover {
    transform: translateY(-2px);
}

.bme-doc-column.br { border-color: var(--bme-br-border); }
.bme-doc-column.bmp { border-color: var(--bme-bmp-border); }
.bme-doc-column.brp { border-color: var(--bme-brp-border); }

.bme-doc-header {
    padding: var(--bme-spacing-md) var(--bme-spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--bme-spacing-md);
}

.bme-doc-column.br .bme-doc-header { background: var(--bme-br-bg); }
.bme-doc-column.bmp .bme-doc-header { background: var(--bme-bmp-bg); }
.bme-doc-column.brp .bme-doc-header { background: var(--bme-brp-bg); }

.bme-doc-icon {
    width: 36px;
    height: 36px;
    border-radius: var(--bme-radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    background: #ffffff;
}

.bme-doc-column.br .bme-doc-icon { color: var(--bme-br-primary); }
.bme-doc-column.bmp .bme-doc-icon { color: var(--bme-bmp-primary); }
.bme-doc-column.brp .bme-doc-icon { color: var(--bme-brp-primary); }

.bme-doc-title {
    font-family: var(--bme-font-display);
    font-size: 1rem;
    font-weight: 600;
    margin: 0;
}

.bme-doc-abbr {
    font-size: 0.75rem;
    padding: 2px 8px;
    border-radius: var(--bme-radius-sm);
    background: #ffffff;
    font-weight: 600;
}

.bme-doc-column.br .bme-doc-abbr { color: var(--bme-br-primary); }
.bme-doc-column.bmp .bme-doc-abbr { color: var(--bme-bmp-primary); }
.bme-doc-column.brp .bme-doc-abbr { color: var(--bme-brp-primary); }

/* Section Groups */
.bme-doc-sections {
    padding: var(--bme-spacing-md);
    max-height: 500px;
    overflow-y: auto;
}

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

.bme-section-title {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--bme-gray-500);
    margin: 0 0 var(--bme-spacing-sm);
    padding: 0 var(--bme-spacing-sm);
}

/* Item Cards */
.bme-item-card {
    background: var(--bme-gray-50);
    border-radius: var(--bme-radius-md);
    padding: var(--bme-spacing-sm) var(--bme-spacing-md);
    margin-bottom: var(--bme-spacing-xs);
    cursor: pointer;
    transition: all var(--bme-transition-fast);
    border-left: 3px solid transparent;
    position: relative;
}

.bme-item-card:hover {
    background: var(--bme-gray-100);
    transform: translateX(4px);
}

.bme-item-card.highlighted {
    background: #fef3c7;
    border-left-color: #f59e0b;
}

.bme-doc-column.br .bme-item-card:hover { border-left-color: var(--bme-br-primary); }
.bme-doc-column.bmp .bme-item-card:hover { border-left-color: var(--bme-bmp-primary); }
.bme-doc-column.brp .bme-item-card:hover { border-left-color: var(--bme-brp-primary); }

.bme-item-label {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--bme-gray-800);
    margin: 0;
}

.bme-item-connections {
    display: flex;
    gap: 4px;
    margin-top: 4px;
}

.bme-connection-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.bme-connection-dot.br { background: var(--bme-br-primary); }
.bme-connection-dot.bmp { background: var(--bme-bmp-primary); }
.bme-connection-dot.brp { background: var(--bme-brp-primary); }

/* Shared Zone */
.bme-shared-zone {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--bme-spacing-md);
    min-width: 120px;
}

.bme-shared-indicator {
    writing-mode: vertical-rl;
    text-orientation: mixed;
    transform: rotate(180deg);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--bme-gray-400);
    padding: var(--bme-spacing-md) 0;
}

.bme-shared-line {
    width: 2px;
    flex: 1;
    background: linear-gradient(180deg, 
        transparent 0%, 
        var(--bme-shared-two) 20%, 
        var(--bme-shared-two) 80%, 
        transparent 100%
    );
    border-radius: 1px;
}

/* ============================================
   SVG CONNECTION LAYER
   ============================================ */
.bme-svg-layer {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 10;
}

.bme-connection-path {
    fill: none;
    stroke: var(--bme-shared-all);
    stroke-width: 2;
    stroke-dasharray: 8 4;
    stroke-dashoffset: 0;
    opacity: 0;
    transition: opacity var(--bme-transition-base);
}

.bme-connection-path.visible {
    opacity: 1;
    animation: bme-dashMove 1s linear infinite;
}

@keyframes bme-dashMove {
    from { stroke-dashoffset: 12; }
    to { stroke-dashoffset: 0; }
}

/* ============================================
   LIFECYCLE OVERLAY
   ============================================ */
.bme-lifecycle {
    position: relative;
    padding: var(--bme-spacing-xl) 0;
}

.bme-lifecycle-visual {
    margin-bottom: var(--bme-spacing-xl);
}

.bme-lifecycle-row {
    display: flex;
    align-items: stretch;
    margin-bottom: 0;
    position: relative;
}

.bme-lifecycle-label {
    width: 180px;
    flex-shrink: 0;
    padding-right: var(--bme-spacing-lg);
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.bme-lifecycle-label-main {
    font-family: var(--bme-font-display);
    font-size: 1rem;
    font-weight: 600;
    color: var(--bme-gray-800);
    margin: 0;
}

.bme-lifecycle-label-sub {
    font-size: 0.8rem;
    color: var(--bme-gray-500);
    margin: 0;
}

/* Track container for phases */
.bme-lifecycle-track {
    flex: 1;
    display: flex;
    gap: 2px;
}

/* PLC container takes 80% - contains 4 phases */
.bme-plc-container {
    flex: 4;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2px;
}

/* Post-program zone (empty in PLC row, shows label) */
.bme-post-program-zone {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bme-gray-100);
    border-radius: var(--bme-radius-md);
    margin-left: var(--bme-spacing-md);
    border: 2px dashed var(--bme-gray-300);
}

.bme-post-label {
    font-size: 0.75rem;
    color: var(--bme-gray-500);
    text-align: center;
    font-style: italic;
}

/* BM container - first 4 phases align with PLC */
.bme-bm-container {
    flex: 4;
    display: grid;
    grid-template-columns: 1fr 1fr 1fr 1fr;
    gap: 2px;
}

/* Transition phase spans across Delivery and Closure */
.bme-bm-phase-3 {
    /* This is Benefits Transition - visually it should span late Delivery + Closure */
}

/* Sustainment zone - in post-program area */
.bme-sustainment-zone {
    flex: 1;
    margin-left: var(--bme-spacing-md);
}

.bme-sustainment-zone .bme-phase-block {
    height: 100%;
}

/* Arrows row */
.bme-lifecycle-arrows {
    display: flex;
    height: 40px;
}

.bme-arrows-track {
    flex: 1;
    margin-left: 180px;
    display: flex;
    align-items: center;
}

.bme-arrow-down {
    flex: 1;
    text-align: center;
    color: var(--bme-gray-400);
    font-size: 1.2rem;
}

.bme-arrow-span {
    font-size: 0.7rem;
    color: var(--bme-gray-500);
}

.bme-arrow-post {
    flex: 0.25;
    margin-left: var(--bme-spacing-md);
}

.bme-lifecycle-phases {
    flex: 1;
    display: flex;
    gap: 2px;
}

.bme-phase-block {
    padding: var(--bme-spacing-md);
    border-radius: var(--bme-radius-md);
    position: relative;
    transition: all var(--bme-transition-base);
    cursor: pointer;
    min-height: 80px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.bme-phase-block:hover {
    transform: translateY(-4px);
    box-shadow: var(--bme-shadow-lg);
    z-index: 5;
}

.bme-phase-block.identification { background: linear-gradient(135deg, var(--bme-phase-identification), #0e7490); }
.bme-phase-block.analysis { background: linear-gradient(135deg, var(--bme-phase-analysis), #7c3aed); }
.bme-phase-block.delivery { background: linear-gradient(135deg, var(--bme-phase-delivery), #059669); }
.bme-phase-block.transition { background: linear-gradient(135deg, var(--bme-phase-transition), #d97706); }
.bme-phase-block.sustainment { background: linear-gradient(135deg, var(--bme-phase-sustainment), #dc2626); }

.bme-phase-block.formulation { background: linear-gradient(135deg, #6366f1, #4f46e5); }
.bme-phase-block.planning { background: linear-gradient(135deg, #8b5cf6, #7c3aed); }
.bme-phase-block.delivery-program { background: linear-gradient(135deg, #10b981, #059669); }
.bme-phase-block.closure { background: linear-gradient(135deg, #f97316, #ea580c); }

/* Lifecycle Matrix - Iterative View */
.bme-lifecycle-matrix {
    display: flex;
    margin-top: var(--bme-spacing-xl);
    align-items: flex-start;
}

.bme-matrix-container {
    flex: 1;
}

.bme-matrix-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
}

.bme-matrix-table th {
    background: var(--bme-gray-100);
    padding: var(--bme-spacing-sm) var(--bme-spacing-md);
    text-align: center;
    font-weight: 600;
    color: var(--bme-gray-700);
    border: 1px solid var(--bme-gray-200);
}

.bme-matrix-table th:first-child {
    text-align: left;
    width: 200px;
}

.bme-matrix-table td {
    padding: var(--bme-spacing-sm) var(--bme-spacing-md);
    text-align: center;
    border: 1px solid var(--bme-gray-200);
    vertical-align: middle;
}

.bme-activity-name {
    text-align: left !important;
    font-weight: 500;
    color: var(--bme-gray-800);
}

.bme-cell-primary {
    background: #dcfce7;
    color: #166534;
    font-weight: 700;
    font-size: 1rem;
}

.bme-cell-secondary {
    background: #fef9c3;
    color: #854d0e;
    font-weight: 500;
}

.bme-cell-none {
    background: var(--bme-gray-50);
    color: var(--bme-gray-400);
}

.bme-matrix-legend {
    display: flex;
    gap: var(--bme-spacing-lg);
    margin-top: var(--bme-spacing-md);
    font-size: 0.8rem;
    color: var(--bme-gray-600);
    justify-content: center;
}

.bme-phase-name {
    color: #ffffff;
    font-weight: 600;
    font-size: 0.85rem;
    margin: 0;
    text-shadow: 0 1px 2px rgba(0,0,0,0.2);
}

.bme-phase-activities {
    color: rgba(255,255,255,0.85);
    font-size: 0.75rem;
    margin: var(--bme-spacing-xs) 0 0;
    line-height: 1.4;
}

/* Lifecycle Connectors */
.bme-lifecycle-connectors {
    position: absolute;
    left: 180px;
    right: 0;
    height: 60px;
    pointer-events: none;
}

.bme-connector-line {
    position: absolute;
    height: 2px;
    background: var(--bme-gray-300);
}

.bme-connector-dot {
    position: absolute;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--bme-gray-400);
    border: 2px solid #ffffff;
    transform: translate(-50%, -50%);
}

/* Artifact Markers */
.bme-artifact-markers {
    display: flex;
    gap: var(--bme-spacing-sm);
    margin-top: var(--bme-spacing-sm);
}

.bme-artifact-chip {
    font-size: 0.65rem;
    padding: 2px 8px;
    border-radius: var(--bme-radius-full);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 4px;
}

.bme-artifact-chip.br {
    background: var(--bme-br-bg);
    color: var(--bme-br-primary);
    border: 1px solid var(--bme-br-border);
}

.bme-artifact-chip.bmp {
    background: var(--bme-bmp-bg);
    color: var(--bme-bmp-primary);
    border: 1px solid var(--bme-bmp-border);
}

.bme-artifact-chip.brp {
    background: var(--bme-brp-bg);
    color: var(--bme-brp-primary);
    border: 1px solid var(--bme-brp-border);
}

.bme-artifact-chip .action-icon {
    width: 10px;
    height: 10px;
}

/* ============================================
   TEMPLATES VIEW
   ============================================ */
.bme-templates-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--bme-spacing-xl);
}

.bme-template-card {
    background: #ffffff;
    border-radius: var(--bme-radius-lg);
    overflow: hidden;
    border: 2px solid var(--bme-gray-200);
    transition: all var(--bme-transition-base);
}

.bme-template-card:hover {
    box-shadow: var(--bme-shadow-lg);
    transform: translateY(-4px);
}

.bme-template-card.br { border-color: var(--bme-br-border); }
.bme-template-card.bmp { border-color: var(--bme-bmp-border); }
.bme-template-card.brp { border-color: var(--bme-brp-border); }

.bme-template-header {
    padding: var(--bme-spacing-lg);
    display: flex;
    align-items: flex-start;
    gap: var(--bme-spacing-md);
}

.bme-template-card.br .bme-template-header { background: var(--bme-br-bg); }
.bme-template-card.bmp .bme-template-header { background: var(--bme-bmp-bg); }
.bme-template-card.brp .bme-template-header { background: var(--bme-brp-bg); }

.bme-template-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--bme-radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    background: #ffffff;
    box-shadow: var(--bme-shadow-md);
}

.bme-template-card.br .bme-template-icon { color: var(--bme-br-primary); }
.bme-template-card.bmp .bme-template-icon { color: var(--bme-bmp-primary); }
.bme-template-card.brp .bme-template-icon { color: var(--bme-brp-primary); }

.bme-template-info {
    flex: 1;
}

.bme-template-title {
    font-family: var(--bme-font-display);
    font-size: 1.25rem;
    font-weight: 600;
    margin: 0 0 var(--bme-spacing-xs);
}

.bme-template-purpose {
    font-size: 0.85rem;
    color: var(--bme-gray-600);
    margin: 0;
}

.bme-template-sections {
    padding: var(--bme-spacing-lg);
}

.bme-template-section {
    margin-bottom: var(--bme-spacing-md);
}

.bme-template-section:last-child {
    margin-bottom: 0;
}

.bme-template-section-title {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--bme-gray-500);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin: 0 0 var(--bme-spacing-sm);
    display: flex;
    align-items: center;
    gap: var(--bme-spacing-sm);
}

.bme-template-items {
    display: flex;
    flex-direction: column;
    gap: var(--bme-spacing-xs);
}

.bme-template-item {
    display: flex;
    align-items: flex-start;
    gap: var(--bme-spacing-sm);
    padding: var(--bme-spacing-sm);
    background: var(--bme-gray-50);
    border-radius: var(--bme-radius-sm);
    cursor: pointer;
    transition: all var(--bme-transition-fast);
}

.bme-template-item:hover {
    background: var(--bme-gray-100);
}

.bme-template-item-bullet {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    margin-top: 6px;
    flex-shrink: 0;
}

.bme-template-card.br .bme-template-item-bullet { background: var(--bme-br-primary); }
.bme-template-card.bmp .bme-template-item-bullet { background: var(--bme-bmp-primary); }
.bme-template-card.brp .bme-template-item-bullet { background: var(--bme-brp-primary); }

.bme-template-item-text {
    font-size: 0.85rem;
    color: var(--bme-gray-700);
    margin: 0;
}

/* ============================================
   EXAMPLES VIEW
   ============================================ */
.bme-examples-container {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: var(--bme-spacing-xl);
    min-height: 500px;
}

@media (max-width: 768px) {
    .bme-examples-container {
        grid-template-columns: 1fr;
    }
}

.bme-examples-nav {
    background: #ffffff;
    border-radius: var(--bme-radius-lg);
    padding: var(--bme-spacing-md);
    border: 1px solid var(--bme-gray-200);
    max-height: 600px;
    overflow-y: auto;
}

.bme-examples-nav-section {
    margin-bottom: var(--bme-spacing-lg);
}

.bme-examples-nav-title {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: var(--bme-spacing-sm) var(--bme-spacing-md);
    margin: 0;
    border-radius: var(--bme-radius-sm);
}

.bme-examples-nav-section.br .bme-examples-nav-title {
    background: var(--bme-br-bg);
    color: var(--bme-br-primary);
}

.bme-examples-nav-section.bmp .bme-examples-nav-title {
    background: var(--bme-bmp-bg);
    color: var(--bme-bmp-primary);
}

.bme-examples-nav-section.brp .bme-examples-nav-title {
    background: var(--bme-brp-bg);
    color: var(--bme-brp-primary);
}

.bme-examples-nav-items {
    margin-top: var(--bme-spacing-sm);
}

.bme-examples-nav-item {
    display: block;
    padding: var(--bme-spacing-sm) var(--bme-spacing-md);
    font-size: 0.85rem;
    color: var(--bme-gray-600);
    cursor: pointer;
    border-radius: var(--bme-radius-sm);
    transition: all var(--bme-transition-fast);
}

.bme-examples-nav-item:hover {
    background: var(--bme-gray-100);
    color: var(--bme-gray-800);
}

.bme-examples-nav-item.active {
    background: var(--bme-gray-800);
    color: #ffffff;
}

/* Example Detail Panel */
.bme-example-detail {
    background: #ffffff;
    border-radius: var(--bme-radius-lg);
    padding: var(--bme-spacing-xl);
    border: 1px solid var(--bme-gray-200);
}

.bme-example-header {
    display: flex;
    align-items: center;
    gap: var(--bme-spacing-md);
    margin-bottom: var(--bme-spacing-lg);
    padding-bottom: var(--bme-spacing-lg);
    border-bottom: 1px solid var(--bme-gray-200);
}

.bme-example-badge {
    padding: var(--bme-spacing-xs) var(--bme-spacing-md);
    border-radius: var(--bme-radius-full);
    font-size: 0.75rem;
    font-weight: 600;
}

.bme-example-badge.br { background: var(--bme-br-bg); color: var(--bme-br-primary); }
.bme-example-badge.bmp { background: var(--bme-bmp-bg); color: var(--bme-bmp-primary); }
.bme-example-badge.brp { background: var(--bme-brp-bg); color: var(--bme-brp-primary); }

.bme-example-title {
    font-family: var(--bme-font-display);
    font-size: 1.5rem;
    font-weight: 600;
    margin: 0;
    flex: 1;
}

.bme-example-tabs {
    display: flex;
    gap: var(--bme-spacing-sm);
    margin-bottom: var(--bme-spacing-lg);
}

.bme-example-tab {
    padding: var(--bme-spacing-sm) var(--bme-spacing-lg);
    border: none;
    background: var(--bme-gray-100);
    color: var(--bme-gray-600);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    border-radius: var(--bme-radius-md);
    transition: all var(--bme-transition-fast);
}

.bme-example-tab:hover {
    background: var(--bme-gray-200);
}

.bme-example-tab.active {
    background: var(--bme-gray-800);
    color: #ffffff;
}

.bme-example-content {
    padding: var(--bme-spacing-lg);
    background: var(--bme-gray-50);
    border-radius: var(--bme-radius-md);
    font-size: 0.95rem;
    line-height: 1.7;
}

.bme-example-content h4 {
    font-family: var(--bme-font-display);
    font-size: 1.1rem;
    font-weight: 600;
    margin: 0 0 var(--bme-spacing-md);
}

.bme-example-content p {
    margin: 0 0 var(--bme-spacing-md);
}

.bme-example-content p:last-child {
    margin: 0;
}

.bme-example-box {
    background: #ffffff;
    border-left: 4px solid var(--bme-gray-400);
    padding: var(--bme-spacing-md);
    margin: var(--bme-spacing-md) 0;
    border-radius: 0 var(--bme-radius-sm) var(--bme-radius-sm) 0;
}

.bme-example-box.br { border-left-color: var(--bme-br-primary); }
.bme-example-box.bmp { border-left-color: var(--bme-bmp-primary); }
.bme-example-box.brp { border-left-color: var(--bme-brp-primary); }

/* ============================================
   INSPECTOR PANEL
   ============================================ */
.bme-inspector {
    position: fixed;
    top: 0;
    right: -400px;
    width: 400px;
    height: 100vh;
    background: #ffffff;
    box-shadow: var(--bme-shadow-xl);
    z-index: 1000;
    transition: right var(--bme-transition-base);
    overflow-y: auto;
}

.bme-inspector.open {
    right: 0;
}

.bme-inspector-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.4);
    z-index: 999;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--bme-transition-base);
}

.bme-inspector-overlay.visible {
    opacity: 1;
    pointer-events: auto;
}

.bme-inspector-header {
    padding: var(--bme-spacing-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--bme-gray-200);
    position: sticky;
    top: 0;
    background: #ffffff;
    z-index: 10;
}

.bme-inspector-close {
    width: 32px;
    height: 32px;
    border: none;
    background: var(--bme-gray-100);
    border-radius: var(--bme-radius-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--bme-transition-fast);
}

.bme-inspector-close:hover {
    background: var(--bme-gray-200);
}

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

.bme-inspector-section {
    margin-bottom: var(--bme-spacing-lg);
}

.bme-inspector-section-title {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--bme-gray-500);
    margin: 0 0 var(--bme-spacing-sm);
}

.bme-inspector-section-content {
    font-size: 0.95rem;
    color: var(--bme-gray-700);
}

/* ============================================
   STORY MODE - CINEMATIC EXPERIENCE
   ============================================ */
.bme-story-container {
    position: relative;
    min-height: 600px;
    overflow: hidden;
    background: linear-gradient(180deg, #0f172a 0%, #1e293b 50%, #0f172a 100%);
    border-radius: var(--bme-radius-lg);
    padding: var(--bme-spacing-xl);
}

.bme-story-container.playing {
    animation: bme-container-pulse 5s ease-in-out infinite;
}

@keyframes bme-container-pulse {
    0%, 100% { box-shadow: inset 0 0 60px rgba(99, 102, 241, 0.1); }
    50% { box-shadow: inset 0 0 80px rgba(99, 102, 241, 0.2); }
}

.bme-story-stage {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 320px;
    position: relative;
    margin-bottom: var(--bme-spacing-lg);
}

.bme-story-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.15) 0%, transparent 70%);
    pointer-events: none;
    animation: bme-glow-pulse 4s ease-in-out infinite;
}

@keyframes bme-glow-pulse {
    0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 0.5; }
    50% { transform: translate(-50%, -50%) scale(1.2); opacity: 0.8; }
}

.bme-story-particles {
    position: absolute;
    inset: 0;
    pointer-events: none;
    overflow: hidden;
}

.bme-story-animation-container {
    width: 100%;
    max-width: 500px;
    aspect-ratio: 5/3;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--bme-radius-xl);
    overflow: hidden;
    position: relative;
    backdrop-filter: blur(10px);
    box-shadow: 
        0 0 40px rgba(99, 102, 241, 0.1),
        0 25px 50px -12px rgba(0, 0, 0, 0.4);
}

.bme-cinematic-svg {
    width: 100%;
    height: 100%;
}

/* Timeline */
.bme-story-timeline {
    margin: var(--bme-spacing-xl) 0;
    padding: 0 var(--bme-spacing-xl);
}

.bme-timeline-track {
    height: 4px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 2px;
    position: relative;
    overflow: hidden;
}

.bme-timeline-progress {
    height: 100%;
    background: linear-gradient(90deg, #6366f1, #8b5cf6, #a855f7);
    border-radius: 2px;
    transition: width 0.5s ease;
}

.bme-timeline-markers {
    display: flex;
    justify-content: space-between;
    margin-top: var(--bme-spacing-md);
}

.bme-timeline-marker {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    transition: all var(--bme-transition-fast);
}

.bme-marker-dot {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    border: 2px solid rgba(255, 255, 255, 0.3);
    transition: all var(--bme-transition-fast);
}

.bme-timeline-marker:hover .bme-marker-dot {
    background: rgba(99, 102, 241, 0.5);
    border-color: #6366f1;
    transform: scale(1.2);
}

.bme-timeline-marker.active .bme-marker-dot {
    background: #6366f1;
    border-color: #6366f1;
    box-shadow: 0 0 20px rgba(99, 102, 241, 0.6);
    animation: bme-marker-active 1.5s ease-in-out infinite;
}

@keyframes bme-marker-active {
    0%, 100% { box-shadow: 0 0 20px rgba(99, 102, 241, 0.6); }
    50% { box-shadow: 0 0 30px rgba(99, 102, 241, 0.9); }
}

.bme-timeline-marker.completed .bme-marker-dot {
    background: #10b981;
    border-color: #10b981;
}

.bme-marker-label {
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.5);
    font-weight: 500;
}

.bme-timeline-marker.active .bme-marker-label,
.bme-timeline-marker.completed .bme-marker-label {
    color: rgba(255, 255, 255, 0.9);
}

/* Narration Card */
.bme-story-narration {
    text-align: center;
    padding: var(--bme-spacing-lg) var(--bme-spacing-xl);
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--bme-radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    margin: 0 var(--bme-spacing-xl);
    animation: bme-fade-in 0.5s ease;
}

@keyframes bme-fade-in {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.bme-narration-badge {
    display: inline-block;
    padding: 4px 12px;
    background: rgba(99, 102, 241, 0.2);
    color: #a5b4fc;
    border-radius: var(--bme-radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--bme-spacing-sm);
}

.bme-story-narration-title {
    font-family: var(--bme-font-display);
    font-size: 1.75rem;
    font-weight: 600;
    color: #ffffff;
    margin: 0 0 var(--bme-spacing-md);
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.bme-story-narration-text {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.7);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.7;
}

.bme-narration-artifacts {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--bme-spacing-sm);
    margin-top: var(--bme-spacing-lg);
    flex-wrap: wrap;
}

.bme-artifacts-label {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.5);
}

/* Controls */
.bme-story-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--bme-spacing-lg);
    padding: var(--bme-spacing-xl) 0 0;
}

.bme-story-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    cursor: pointer;
    transition: all var(--bme-transition-base);
}

.bme-btn-nav {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.7);
}

.bme-btn-nav:hover {
    background: rgba(255, 255, 255, 0.2);
    color: #ffffff;
    transform: scale(1.1);
}

.bme-btn-nav:disabled {
    opacity: 0.3;
    cursor: not-allowed;
    transform: none;
}

.bme-btn-nav .bme-icon {
    width: 20px;
    height: 20px;
}

.bme-btn-nav .bme-icon svg {
    stroke: currentColor;
    fill: none;
    stroke-width: 2;
}

/* Play Button - Special Styling */
.bme-btn-play {
    position: relative;
    padding: var(--bme-spacing-md) var(--bme-spacing-xl);
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    color: #ffffff;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--bme-radius-full);
    gap: var(--bme-spacing-sm);
    box-shadow: 0 4px 20px rgba(99, 102, 241, 0.4);
    overflow: hidden;
}

.bme-btn-play:hover {
    transform: scale(1.05);
    box-shadow: 0 6px 30px rgba(99, 102, 241, 0.5);
}

.bme-btn-play.playing {
    background: linear-gradient(135deg, #ef4444, #f97316);
    box-shadow: 0 4px 20px rgba(239, 68, 68, 0.4);
}

.bme-btn-play.playing:hover {
    box-shadow: 0 6px 30px rgba(239, 68, 68, 0.5);
}

.bme-play-icon {
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.bme-play-icon svg {
    width: 16px;
    height: 16px;
}

.bme-play-ring {
    position: absolute;
    inset: -4px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: var(--bme-radius-full);
    opacity: 0;
}

.bme-btn-play.playing .bme-play-ring {
    animation: bme-ring-pulse 1.5s ease-out infinite;
}

@keyframes bme-ring-pulse {
    0% { transform: scale(1); opacity: 0.8; }
    100% { transform: scale(1.3); opacity: 0; }
}

/* ============================================
   LOTTIE ANIMATIONS
   ============================================ */
.bme-lottie-container {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.bme-lottie-player {
    max-width: 100%;
    max-height: 100%;
}

/* ============================================
   SVG ICONS
   ============================================ */
.bme-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.bme-icon svg {
    width: 1em;
    height: 1em;
    stroke: currentColor;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
    fill: none;
}

/* ============================================
   COST-BENEFIT PROFILE
   ============================================ */
.bme-cost-benefit-chart {
    background: #ffffff;
    border-radius: var(--bme-radius-lg);
    padding: var(--bme-spacing-xl);
    border: 1px solid var(--bme-gray-200);
}

.bme-chart-container {
    position: relative;
    height: 300px;
    margin-top: var(--bme-spacing-lg);
}

.bme-chart-svg {
    width: 100%;
    height: 100%;
}

.bme-chart-axis {
    stroke: var(--bme-gray-300);
    stroke-width: 1;
}

.bme-chart-axis-label {
    fill: var(--bme-gray-500);
    font-size: 12px;
}

.bme-chart-line-cost {
    fill: none;
    stroke: var(--bme-phase-sustainment);
    stroke-width: 3;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.bme-chart-line-benefit {
    fill: none;
    stroke: var(--bme-bmp-primary);
    stroke-width: 3;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.bme-chart-area-cost {
    fill: url(#costGradient);
    opacity: 0.3;
}

.bme-chart-area-benefit {
    fill: url(#benefitGradient);
    opacity: 0.3;
}

.bme-chart-legend {
    display: flex;
    justify-content: center;
    gap: var(--bme-spacing-xl);
    margin-top: var(--bme-spacing-lg);
}

.bme-chart-legend-item {
    display: flex;
    align-items: center;
    gap: var(--bme-spacing-sm);
    font-size: 0.9rem;
    color: var(--bme-gray-600);
}

.bme-chart-legend-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.bme-chart-legend-dot.cost { background: var(--bme-phase-sustainment); }
.bme-chart-legend-dot.benefit { background: var(--bme-bmp-primary); }

/* ============================================
   CROSSWALK THREADS
   ============================================ */
.bme-crosswalk-selector {
    display: flex;
    flex-wrap: wrap;
    gap: var(--bme-spacing-sm);
    margin-bottom: var(--bme-spacing-lg);
    padding: var(--bme-spacing-md);
    background: var(--bme-gray-50);
    border-radius: var(--bme-radius-md);
}

.bme-crosswalk-btn {
    display: flex;
    align-items: center;
    gap: var(--bme-spacing-sm);
    padding: var(--bme-spacing-sm) var(--bme-spacing-md);
    border: 2px solid var(--bme-gray-300);
    background: #ffffff;
    color: var(--bme-gray-600);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    border-radius: var(--bme-radius-full);
    transition: all var(--bme-transition-fast);
}

.bme-crosswalk-btn:hover {
    border-color: var(--bme-shared-all);
    color: var(--bme-shared-all);
}

.bme-crosswalk-btn.active {
    background: var(--bme-shared-all);
    border-color: var(--bme-shared-all);
    color: #ffffff;
}

/* ============================================
   RESPONSIVE UTILITIES
   ============================================ */
@media (max-width: 768px) {
    .bme-explorer {
        border-radius: 0;
    }
    
    .bme-header {
        padding: var(--bme-spacing-md);
    }
    
    .bme-title {
        font-size: 1.5rem;
    }
    
    .bme-tabs {
        padding: var(--bme-spacing-sm) var(--bme-spacing-md);
    }
    
    .bme-tab {
        padding: var(--bme-spacing-xs) var(--bme-spacing-md);
        font-size: 0.8rem;
    }
    
    .bme-panel {
        padding: var(--bme-spacing-md);
    }
    
    .bme-formula-cards {
        grid-template-columns: 1fr;
    }
    
    .bme-templates-grid {
        grid-template-columns: 1fr;
    }
    
    .bme-inspector {
        width: 100%;
        right: -100%;
    }
    
    .bme-lifecycle-label {
        width: 100px;
    }
}

/* ============================================
   PRINT STYLES
   ============================================ */
@media print {
    .bme-explorer {
        box-shadow: none;
    }
    
    .bme-tabs,
    .bme-story-controls {
        display: none;
    }
    
    .bme-panel {
        display: block !important;
        page-break-inside: avoid;
    }
}

/* ============================================
   ANIMATION KEYFRAMES
   ============================================ */
@keyframes bme-pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

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

@keyframes bme-slideRight {
    from { opacity: 0; transform: translateX(-20px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes bme-scaleIn {
    from { opacity: 0; transform: scale(0.9); }
    to { opacity: 1; transform: scale(1); }
}

@keyframes bme-glow {
    0%, 100% { box-shadow: 0 0 5px rgba(37, 99, 235, 0.3); }
    50% { box-shadow: 0 0 20px rgba(37, 99, 235, 0.6); }
}

.bme-animate-pulse { animation: bme-pulse 2s infinite; }
.bme-animate-slide-up { animation: bme-slideUp 0.4s ease; }
.bme-animate-slide-right { animation: bme-slideRight 0.4s ease; }
.bme-animate-scale-in { animation: bme-scaleIn 0.3s ease; }
.bme-animate-glow { animation: bme-glow 2s infinite; }