/* ═══════════════════════════════════════════════════════════════════════════
   MEL — Structured Discovery
   A distinctive, bold design system
   ═══════════════════════════════════════════════════════════════════════════ */

/* ─────────────────────────────────────────────────────────────────────────────
   CSS Variables & Theme
   ───────────────────────────────────────────────────────────────────────────── */
:root {
    /* Core Palette - Deep noir with electric accents */
    --color-bg-deep: #08080c;
    --color-bg-base: #0d0d12;
    --color-bg-elevated: #14141c;
    --color-bg-surface: #1a1a24;
    --color-bg-hover: #22222e;
    --color-bg-active: #2a2a38;
    
    /* Accent - Electric cyan with warm complement */
    --color-accent: #00e5c7;
    --color-accent-hover: #00ffd9;
    --color-accent-muted: rgba(0, 229, 199, 0.15);
    --color-accent-glow: rgba(0, 229, 199, 0.3);
    
    /* Secondary Accent - Warm amber */
    --color-secondary: #ffb84d;
    --color-secondary-muted: rgba(255, 184, 77, 0.15);
    
    /* Semantic Colors */
    --color-success: #22c55e;
    --color-warning: #f59e0b;
    --color-error: #ef4444;
    --color-info: #3b82f6;
    
    /* Text Colors */
    --color-text-primary: #f5f5f7;
    --color-text-secondary: #a1a1aa;
    --color-text-muted: #71717a;
    --color-text-ghost: #52525b;
    
    /* Borders */
    --color-border: rgba(255, 255, 255, 0.08);
    --color-border-subtle: rgba(255, 255, 255, 0.04);
    --color-border-accent: rgba(0, 229, 199, 0.3);
    
    /* Typography */
    --font-display: 'Instrument Serif', Georgia, serif;
    --font-body: 'Sora', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    
    /* Spacing */
    --space-1: 4px;
    --space-2: 8px;
    --space-3: 12px;
    --space-4: 16px;
    --space-5: 20px;
    --space-6: 24px;
    --space-8: 32px;
    --space-10: 40px;
    --space-12: 48px;
    --space-16: 64px;
    
    /* Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 40px var(--color-accent-glow);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;
}

/* ─────────────────────────────────────────────────────────────────────────────
   Reset & Base
   ───────────────────────────────────────────────────────────────────────────── */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-body);
    font-size: 14px;
    line-height: 1.6;
    color: var(--color-text-primary);
    background: var(--color-bg-deep);
    min-height: 100vh;
    overflow-x: hidden;
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--color-bg-base);
}

::-webkit-scrollbar-thumb {
    background: var(--color-bg-active);
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-text-ghost);
}

/* Focus States */
:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

/* Selection */
::selection {
    background: var(--color-accent-muted);
    color: var(--color-accent);
}

/* ─────────────────────────────────────────────────────────────────────────────
   Typography
   ───────────────────────────────────────────────────────────────────────────── */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    letter-spacing: -0.02em;
}

h1 { font-size: 2rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1rem; }

.font-display {
    font-family: var(--font-display);
    font-weight: 400;
    letter-spacing: 0;
}

.font-mono {
    font-family: var(--font-mono);
    font-size: 0.875em;
}

/* ─────────────────────────────────────────────────────────────────────────────
   App Container & Layout
   ───────────────────────────────────────────────────────────────────────────── */
.app-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    background: 
        radial-gradient(ellipse 80% 50% at 50% -20%, rgba(0, 229, 199, 0.08), transparent),
        radial-gradient(ellipse 60% 40% at 100% 100%, rgba(255, 184, 77, 0.05), transparent),
        var(--color-bg-deep);
}

/* ─────────────────────────────────────────────────────────────────────────────
   Header
   ───────────────────────────────────────────────────────────────────────────── */
.app-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
    padding: 0 var(--space-6);
    background: rgba(13, 13, 18, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-left, .header-right {
    flex: 1;
}

.header-right {
    display: flex;
    justify-content: flex-end;
}

.header-center {
    flex: 2;
    display: flex;
    justify-content: center;
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.logo-icon {
    font-size: 1.5rem;
    color: var(--color-accent);
    animation: pulse-glow 3s ease-in-out infinite;
}

@keyframes pulse-glow {
    0%, 100% { filter: drop-shadow(0 0 4px var(--color-accent-glow)); }
    50% { filter: drop-shadow(0 0 12px var(--color-accent-glow)); }
}

.logo-text {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-style: italic;
    color: var(--color-text-primary);
}

.logo-badge {
    font-family: var(--font-mono);
    font-size: 0.625rem;
    padding: 2px 6px;
    background: var(--color-accent-muted);
    color: var(--color-accent);
    border-radius: var(--radius-full);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Phase Indicator */
.phase-indicator {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

.phase-step {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    background: transparent;
    border: none;
    color: var(--color-text-muted);
    cursor: pointer;
    transition: var(--transition-fast);
    border-radius: var(--radius-md);
}

.phase-step:hover {
    color: var(--color-text-secondary);
    background: var(--color-bg-hover);
}

.phase-step.active {
    color: var(--color-accent);
}

.phase-step.completed {
    color: var(--color-success);
}

.step-number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    font-size: 0.75rem;
    font-weight: 600;
    border: 2px solid currentColor;
    border-radius: var(--radius-full);
    transition: var(--transition-fast);
}

.phase-step.active .step-number {
    background: var(--color-accent);
    border-color: var(--color-accent);
    color: var(--color-bg-deep);
}

.phase-step.completed .step-number {
    background: var(--color-success);
    border-color: var(--color-success);
    color: var(--color-bg-deep);
}

.step-label {
    font-size: 0.8125rem;
    font-weight: 500;
}

.phase-connector {
    width: 32px;
    height: 2px;
    background: var(--color-border);
    border-radius: var(--radius-full);
}

.phase-connector.active {
    background: linear-gradient(90deg, var(--color-accent), var(--color-border));
}

/* ─────────────────────────────────────────────────────────────────────────────
   Buttons
   ───────────────────────────────────────────────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-5);
    font-family: var(--font-body);
    font-size: 0.875rem;
    font-weight: 500;
    line-height: 1;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition-fast);
    white-space: nowrap;
}

.btn-primary {
    background: var(--color-accent);
    color: var(--color-bg-deep);
}

.btn-primary:hover {
    background: var(--color-accent-hover);
    box-shadow: var(--shadow-glow);
}

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

.btn-secondary:hover {
    background: var(--color-bg-hover);
    border-color: var(--color-text-ghost);
}

.btn-ghost {
    background: transparent;
    color: var(--color-text-secondary);
}

.btn-ghost:hover {
    background: var(--color-bg-hover);
    color: var(--color-text-primary);
}

.btn-sm {
    padding: var(--space-2) var(--space-3);
    font-size: 0.8125rem;
}

.btn-block {
    width: 100%;
}

/* ─────────────────────────────────────────────────────────────────────────────
   Main Content
   ───────────────────────────────────────────────────────────────────────────── */
.app-main {
    flex: 1;
    position: relative;
}

.phase-panel {
    display: none;
    height: calc(100vh - 64px);
    overflow-y: auto;
    visibility: hidden;
    position: absolute;
    width: 100%;
}

.phase-panel.active {
    display: block;
    visibility: visible;
    position: relative;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ─────────────────────────────────────────────────────────────────────────────
   Phase 1: Upload
   ───────────────────────────────────────────────────────────────────────────── */
.upload-container {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--space-12) var(--space-6);
}

.upload-hero {
    text-align: center;
    margin-bottom: var(--space-10);
}

.upload-icon-wrapper {
    position: relative;
    display: inline-flex;
    margin-bottom: var(--space-6);
}

.upload-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 120px;
    height: 120px;
    background: var(--color-bg-surface);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-xl);
    color: var(--color-accent);
    position: relative;
    z-index: 1;
}

.upload-pulse {
    position: absolute;
    inset: -8px;
    background: var(--color-accent-muted);
    border-radius: var(--radius-xl);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 0.5; transform: scale(1); }
    50% { opacity: 0.2; transform: scale(1.05); }
}

.upload-title {
    font-family: var(--font-display);
    font-size: 2.25rem;
    font-weight: 400;
    margin-bottom: var(--space-4);
    background: linear-gradient(135deg, var(--color-text-primary), var(--color-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.upload-subtitle {
    font-size: 1rem;
    color: var(--color-text-secondary);
    max-width: 500px;
    margin: 0 auto;
}

/* Dropzone */
.upload-dropzone {
    display: block;
    position: relative;
    padding: var(--space-12);
    background: var(--color-bg-elevated);
    border: 2px dashed var(--color-border);
    border-radius: var(--radius-xl);
    text-align: center;
    cursor: pointer;
    transition: var(--transition-base);
}

.upload-dropzone:hover,
.upload-dropzone.dragover {
    border-color: var(--color-accent);
    background: var(--color-accent-muted);
}

.dropzone-icon {
    color: var(--color-text-muted);
    margin-bottom: var(--space-4);
    transition: var(--transition-base);
}

.upload-dropzone:hover .dropzone-icon {
    color: var(--color-accent);
    transform: translateY(-4px);
}

.dropzone-text {
    font-size: 1.125rem;
    font-weight: 500;
    color: var(--color-text-primary);
    margin-bottom: var(--space-1);
}

.dropzone-hint {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    margin-bottom: var(--space-4);
}

.dropzone-formats {
    display: flex;
    justify-content: center;
    gap: var(--space-2);
}

.format-tag {
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    padding: var(--space-1) var(--space-2);
    background: var(--color-bg-surface);
    color: var(--color-text-muted);
    border-radius: var(--radius-sm);
    text-transform: uppercase;
}

/* Demo Options */
.upload-demo {
    margin-top: var(--space-10);
    text-align: center;
}

.demo-label {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    margin-bottom: var(--space-4);
}

.demo-options {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-4);
}

.demo-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--space-5);
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: var(--transition-fast);
}

.demo-card:hover {
    border-color: var(--color-accent);
    background: var(--color-bg-surface);
    transform: translateY(-2px);
}

.demo-emoji {
    font-size: 2rem;
    margin-bottom: var(--space-2);
}

.demo-name {
    font-weight: 500;
    color: var(--color-text-primary);
    margin-bottom: var(--space-1);
}

.demo-desc {
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

/* ─────────────────────────────────────────────────────────────────────────────
   Phase 2: Structure Analysis
   ───────────────────────────────────────────────────────────────────────────── */
.structure-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--space-10) var(--space-6);
}

/* Loading State */
.structure-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--space-16) 0;
}

.loading-animation {
    position: relative;
    width: 100px;
    height: 100px;
    margin-bottom: var(--space-6);
}

.loading-ring {
    position: absolute;
    inset: 0;
    border: 3px solid var(--color-border);
    border-top-color: var(--color-accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.loading-icon {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--color-accent);
    animation: pulse-glow 2s ease-in-out infinite;
}

.loading-title {
    font-size: 1.5rem;
    margin-bottom: var(--space-2);
}

.loading-subtitle {
    color: var(--color-text-secondary);
    margin-bottom: var(--space-6);
}

.loading-progress {
    width: 300px;
    height: 4px;
    background: var(--color-bg-surface);
    border-radius: var(--radius-full);
    overflow: hidden;
    margin-bottom: var(--space-6);
}

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

.loading-steps {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.loading-step {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    color: var(--color-text-muted);
    transition: var(--transition-fast);
}

.loading-step.active {
    color: var(--color-accent);
}

.loading-step.completed {
    color: var(--color-success);
}

.step-icon {
    font-size: 0.75rem;
}

.step-text {
    font-size: 0.875rem;
}

/* Results State */
.structure-results {
    animation: fadeIn 0.5s ease;
}

.structure-results.hidden {
    display: none;
}

.results-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--space-8);
    padding-bottom: var(--space-6);
    border-bottom: 1px solid var(--color-border);
}

.results-title {
    font-family: var(--font-display);
    font-size: 2rem;
    margin-bottom: var(--space-2);
}

.results-subtitle {
    color: var(--color-text-secondary);
}

.results-stats {
    display: flex;
    gap: var(--space-4);
}

.stat-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--space-4) var(--space-6);
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    min-width: 100px;
}

.stat-value {
    font-family: var(--font-mono);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-accent);
}

.stat-label {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Results Content */
.results-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-6);
    margin-bottom: var(--space-8);
}

.preview-title {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-4);
}

.concept-preview {
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-5);
}

.concept-graph {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-3);
    min-height: 200px;
    align-items: flex-start;
    align-content: flex-start;
}

.concept-node {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-4);
    background: var(--color-bg-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    cursor: pointer;
    transition: var(--transition-fast);
}

.concept-node:hover {
    border-color: var(--color-accent);
    background: var(--color-accent-muted);
}

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

.concept-node .node-label {
    color: var(--color-text-primary);
}

.concept-node .node-count {
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    padding: 2px 6px;
    background: var(--color-bg-hover);
    border-radius: var(--radius-full);
    color: var(--color-text-muted);
}

.path-templates {
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-5);
}

.template-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.template-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    background: var(--color-bg-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition-fast);
}

.template-item:hover {
    border-color: var(--color-secondary);
    background: var(--color-secondary-muted);
}

.template-icon {
    font-size: 1.25rem;
}

.template-info {
    flex: 1;
}

.template-name {
    font-weight: 500;
    color: var(--color-text-primary);
    margin-bottom: 2px;
}

.template-desc {
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

.template-nodes {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--color-text-ghost);
}

/* Mode Selector */
.results-actions {
    text-align: center;
}

.actions-title {
    font-size: 1.125rem;
    margin-bottom: var(--space-5);
}

.mode-selector {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-4);
    max-width: 900px;
    margin: 0 auto;
}

.mode-card {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--space-6);
    background: var(--color-bg-elevated);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-xl);
    cursor: pointer;
    transition: var(--transition-base);
    text-align: center;
}

.mode-card:hover {
    border-color: var(--color-text-ghost);
    background: var(--color-bg-surface);
    transform: translateY(-2px);
}

.mode-card.recommended {
    border-color: var(--color-accent);
}

.mode-card.recommended:hover {
    box-shadow: var(--shadow-glow);
}

.mode-icon {
    font-size: 2.5rem;
    margin-bottom: var(--space-4);
}

.mode-content {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.mode-name {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-text-primary);
}

.mode-desc {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    line-height: 1.5;
}

.mode-badge {
    position: absolute;
    top: var(--space-3);
    right: var(--space-3);
    font-family: var(--font-mono);
    font-size: 0.625rem;
    padding: 3px 8px;
    background: var(--color-bg-surface);
    color: var(--color-text-muted);
    border-radius: var(--radius-full);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.mode-badge.recommended {
    background: var(--color-accent-muted);
    color: var(--color-accent);
}

/* ─────────────────────────────────────────────────────────────────────────────
   Phase 3: Build (Map View)
   ───────────────────────────────────────────────────────────────────────────── */
.build-map-container {
    display: grid;
    grid-template-columns: 280px 1fr 320px;
    height: calc(100vh - 64px);
}

.map-sidebar {
    background: var(--color-bg-elevated);
    border-right: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.sidebar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-4) var(--space-4);
    border-bottom: 1px solid var(--color-border);
}

.sidebar-header h3 {
    font-size: 0.875rem;
    font-weight: 600;
}

.sidebar-stats {
    display: flex;
    gap: var(--space-4);
    padding: var(--space-4);
    border-bottom: 1px solid var(--color-border);
}

.mini-stat {
    display: flex;
    flex-direction: column;
}

.mini-stat-value {
    font-family: var(--font-mono);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-accent);
}

.mini-stat-label {
    font-size: 0.6875rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
}

.tree-view {
    flex: 1;
    overflow-y: auto;
    padding: var(--space-4);
}

.tree-node {
    padding-left: var(--space-4);
    border-left: 1px solid var(--color-border);
    margin-left: var(--space-2);
}

.tree-item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    margin: var(--space-1) 0;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 0.8125rem;
    transition: var(--transition-fast);
}

.tree-item:hover {
    background: var(--color-bg-hover);
}

.tree-item.selected {
    background: var(--color-accent-muted);
    color: var(--color-accent);
}

.tree-item .status-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    flex-shrink: 0;
}

.tree-item .status-dot.pending {
    border: 1px solid var(--color-text-muted);
    background: transparent;
}

.tree-item .status-dot.generated {
    background: var(--color-success);
}

.tree-item .status-dot.error {
    background: var(--color-error);
}

/* Map Canvas */
.map-canvas-wrapper {
    position: relative;
    background: 
        radial-gradient(circle at center, var(--color-bg-surface) 0%, var(--color-bg-base) 100%);
    overflow: hidden;
}

.map-toolbar {
    position: absolute;
    top: var(--space-4);
    left: var(--space-4);
    display: flex;
    gap: var(--space-1);
    padding: var(--space-2);
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    z-index: 10;
}

.tool-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: transparent;
    border: none;
    color: var(--color-text-muted);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition-fast);
}

.tool-btn:hover {
    background: var(--color-bg-hover);
    color: var(--color-text-primary);
}

.tool-btn.active {
    background: var(--color-accent-muted);
    color: var(--color-accent);
}

.tool-separator {
    width: 1px;
    background: var(--color-border);
    margin: var(--space-2) var(--space-1);
}

.map-canvas {
    width: 100%;
    height: 100%;
    cursor: grab;
}

.map-canvas:active {
    cursor: grabbing;
}

.map-svg {
    width: 100%;
    height: 100%;
}

/* Map Nodes */
.map-node {
    cursor: pointer;
    transition: var(--transition-fast);
}

.map-node:hover .node-bg {
    filter: brightness(1.1);
}

.node-bg {
    fill: var(--color-bg-surface);
    stroke: var(--color-border);
    stroke-width: 2;
    rx: 8;
    ry: 8;
    transition: var(--transition-fast);
}

.map-node.selected .node-bg {
    stroke: var(--color-accent);
    stroke-width: 2;
}

.map-node.pending .node-bg {
    stroke-dasharray: 4 2;
}

.map-node.generated .node-bg {
    stroke: var(--color-success);
}

.node-title {
    fill: var(--color-text-primary);
    font-size: 12px;
    font-weight: 500;
}

.node-type {
    fill: var(--color-text-muted);
    font-size: 10px;
}

.node-status {
    font-size: 14px;
}

/* Map Edges */
.map-edge {
    stroke: var(--color-text-ghost);
    stroke-width: 2;
    fill: none;
    marker-end: url(#arrowhead);
}

.map-edge.conditional {
    stroke-dasharray: 6 3;
    stroke: var(--color-secondary);
}

/* Node Editor */
.node-editor {
    background: var(--color-bg-elevated);
    border-left: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.node-editor.hidden {
    display: none;
}

.editor-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-4);
    border-bottom: 1px solid var(--color-border);
}

.editor-header h3 {
    font-size: 1rem;
    font-weight: 600;
}

.editor-content {
    flex: 1;
    overflow-y: auto;
    padding: var(--space-4);
}

.editor-section {
    margin-bottom: var(--space-5);
}

.editor-label {
    display: block;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-2);
}

.editor-textarea {
    width: 100%;
    min-height: 120px;
    padding: var(--space-3);
    background: var(--color-bg-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    font-family: var(--font-body);
    font-size: 0.875rem;
    line-height: 1.6;
    resize: vertical;
}

.editor-textarea:focus {
    outline: none;
    border-color: var(--color-accent);
}

.branches-list, .conditions-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.branch-item, .condition-item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    background: var(--color-bg-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-size: 0.8125rem;
}

.branch-item .branch-label {
    flex: 1;
}

.branch-item .branch-target {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

.editor-actions {
    display: flex;
    gap: var(--space-3);
    padding: var(--space-4);
    border-top: 1px solid var(--color-border);
}

.editor-actions .btn {
    flex: 1;
}

/* ─────────────────────────────────────────────────────────────────────────────
   Phase 3: Build (Guided Mode)
   ───────────────────────────────────────────────────────────────────────────── */
.guided-container {
    display: grid;
    grid-template-columns: 1fr 280px;
    height: calc(100vh - 64px);
}

.guided-progress {
    position: sticky;
    top: 0;
    background: var(--color-bg-elevated);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-4) var(--space-6);
    grid-column: 1 / -1;
}

.progress-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-3);
}

.progress-step {
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    color: var(--color-text-muted);
}

.progress-concepts {
    display: flex;
    gap: var(--space-2);
}

.concept-pill {
    font-size: 0.75rem;
    padding: var(--space-1) var(--space-3);
    background: var(--color-bg-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    color: var(--color-text-muted);
}

.concept-pill.active {
    background: var(--color-accent-muted);
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.concept-pill.completed {
    background: var(--color-success);
    border-color: var(--color-success);
    color: var(--color-bg-deep);
}

.progress-track {
    height: 4px;
    background: var(--color-bg-surface);
    border-radius: var(--radius-full);
    overflow: hidden;
}

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

.guided-main {
    padding: var(--space-8) var(--space-8);
    overflow-y: auto;
}

.guided-context {
    display: flex;
    gap: var(--space-3);
    margin-bottom: var(--space-6);
}

.context-badge {
    display: inline-flex;
    align-items: center;
    padding: var(--space-2) var(--space-4);
    background: var(--color-accent-muted);
    color: var(--color-accent);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 500;
}

.context-type {
    display: inline-flex;
    align-items: center;
    padding: var(--space-2) var(--space-4);
    background: var(--color-secondary-muted);
    color: var(--color-secondary);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
}

/* Content States */
.content-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--space-12) 0;
}

.content-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--color-border);
    border-top-color: var(--color-accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: var(--space-4);
}

.content-generated.hidden,
.content-loading.hidden {
    display: none;
}

.scenario-card {
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    margin-bottom: var(--space-6);
}

.scenario-label {
    font-size: 0.6875rem;
    font-weight: 600;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-3);
}

.scenario-text {
    font-size: 1.125rem;
    line-height: 1.7;
    color: var(--color-text-primary);
}

.choices-section {
    margin-bottom: var(--space-6);
}

.choices-label {
    font-size: 0.6875rem;
    font-weight: 600;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-3);
}

.choices-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.choice-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    padding: var(--space-4);
    background: var(--color-bg-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: var(--transition-fast);
}

.choice-item:hover {
    border-color: var(--color-text-ghost);
}

.choice-letter {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    background: var(--color-bg-hover);
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--color-text-muted);
    flex-shrink: 0;
}

.choice-content {
    flex: 1;
}

.choice-text {
    color: var(--color-text-primary);
    margin-bottom: var(--space-1);
}

.choice-consequence {
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

.choice-consequence.positive {
    color: var(--color-success);
}

.choice-consequence.negative {
    color: var(--color-error);
}

.meta-section {
    display: flex;
    gap: var(--space-6);
    padding: var(--space-4);
    background: var(--color-bg-surface);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-6);
}

.meta-item {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.meta-label {
    font-size: 0.6875rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
}

.meta-value {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--color-accent);
}

.guided-actions {
    display: flex;
    gap: var(--space-3);
    justify-content: flex-end;
}

/* Guided Sidebar */
.guided-sidebar {
    background: var(--color-bg-elevated);
    border-left: 1px solid var(--color-border);
    padding: var(--space-4);
    overflow-y: auto;
}

.sidebar-section {
    margin-bottom: var(--space-6);
}

.sidebar-title {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-3);
}

.coverage-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.coverage-item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    font-size: 0.8125rem;
}

.coverage-item .coverage-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    flex-shrink: 0;
}

.coverage-item .coverage-dot.pending {
    border: 1px solid var(--color-text-ghost);
}

.coverage-item .coverage-dot.partial {
    background: var(--color-warning);
}

.coverage-item .coverage-dot.complete {
    background: var(--color-success);
}

.coverage-item .coverage-label {
    flex: 1;
    color: var(--color-text-secondary);
}

.coverage-item .coverage-count {
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    color: var(--color-text-ghost);
}

.nodes-preview {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.node-preview-item {
    padding: var(--space-2) var(--space-3);
    background: var(--color-bg-surface);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    color: var(--color-text-muted);
    cursor: pointer;
    transition: var(--transition-fast);
}

.node-preview-item:hover {
    background: var(--color-bg-hover);
    color: var(--color-text-secondary);
}

/* ─────────────────────────────────────────────────────────────────────────────
   Phase 4: Preview
   ───────────────────────────────────────────────────────────────────────────── */
.preview-container {
    display: flex;
    flex-direction: column;
    height: calc(100vh - 64px);
}

.preview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-4) var(--space-6);
    background: var(--color-bg-elevated);
    border-bottom: 1px solid var(--color-border);
}

.preview-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    margin-bottom: var(--space-1);
}

.preview-stats {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.preview-actions {
    display: flex;
    gap: var(--space-3);
}

.preview-main {
    flex: 1;
    display: grid;
    grid-template-columns: 1fr 320px;
    overflow: hidden;
}

.game-preview-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-8);
    background: 
        radial-gradient(circle at 50% 50%, var(--color-bg-surface) 0%, var(--color-bg-base) 100%);
}

.device-frame {
    width: 375px;
    background: var(--color-bg-deep);
    border-radius: 40px;
    padding: 12px;
    box-shadow: 
        0 0 0 1px var(--color-border),
        var(--shadow-lg),
        inset 0 0 0 1px rgba(255, 255, 255, 0.05);
}

.device-screen {
    background: var(--color-bg-elevated);
    border-radius: 28px;
    overflow: hidden;
}

.game-simulator {
    display: flex;
    flex-direction: column;
    min-height: 600px;
}

.sim-header {
    padding: var(--space-4);
    border-bottom: 1px solid var(--color-border);
}

.sim-progress {
    height: 4px;
    background: var(--color-bg-surface);
    border-radius: var(--radius-full);
    margin-bottom: var(--space-3);
    overflow: hidden;
}

.sim-progress-fill {
    height: 100%;
    background: var(--color-accent);
    width: 25%;
    transition: width 0.3s ease;
}

.sim-skills {
    display: flex;
    gap: var(--space-2);
}

.sim-skill {
    font-size: 0.6875rem;
    padding: var(--space-1) var(--space-2);
    background: var(--color-bg-surface);
    border-radius: var(--radius-sm);
    color: var(--color-text-muted);
}

.sim-skill .skill-value {
    color: var(--color-accent);
    font-family: var(--font-mono);
}

.sim-content {
    flex: 1;
    padding: var(--space-5);
}

.sim-scenario {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--color-text-primary);
}

.sim-choices {
    padding: var(--space-4);
    border-top: 1px solid var(--color-border);
}

.sim-choice {
    display: block;
    width: 100%;
    padding: var(--space-4);
    margin-bottom: var(--space-2);
    background: var(--color-bg-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    font-size: 0.9375rem;
    text-align: left;
    cursor: pointer;
    transition: var(--transition-fast);
}

.sim-choice:hover {
    border-color: var(--color-accent);
    background: var(--color-accent-muted);
}

.sim-choice:last-child {
    margin-bottom: 0;
}

/* Preview Sidebar */
.preview-sidebar {
    background: var(--color-bg-elevated);
    border-left: 1px solid var(--color-border);
    padding: var(--space-4);
    overflow-y: auto;
}

.preview-section {
    margin-bottom: var(--space-6);
}

.preview-section h4 {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-3);
}

.state-display {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.state-item {
    display: flex;
    justify-content: space-between;
    font-size: 0.8125rem;
}

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

.state-value {
    font-family: var(--font-mono);
    color: var(--color-text-primary);
}

.skills-display {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.skill-bar {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.skill-header {
    display: flex;
    justify-content: space-between;
    font-size: 0.8125rem;
}

.skill-name {
    color: var(--color-text-secondary);
}

.skill-value {
    font-family: var(--font-mono);
    color: var(--color-accent);
}

.skill-track {
    height: 6px;
    background: var(--color-bg-surface);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.skill-fill {
    height: 100%;
    background: var(--color-accent);
    border-radius: var(--radius-full);
    transition: width 0.3s ease;
}

.conditions-display {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.condition-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    background: var(--color-bg-surface);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
}

.condition-badge.met {
    background: rgba(34, 197, 94, 0.15);
    color: var(--color-success);
}

.condition-badge.unmet {
    color: var(--color-text-muted);
}

/* ─────────────────────────────────────────────────────────────────────────────
   Toast Notifications
   ───────────────────────────────────────────────────────────────────────────── */
.toast-container {
    position: fixed;
    bottom: var(--space-6);
    right: var(--space-6);
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    z-index: 1000;
}

.toast {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-4) var(--space-5);
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    animation: slideIn 0.3s ease;
}

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

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

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

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

.toast-message {
    font-size: 0.875rem;
    color: var(--color-text-primary);
}

/* ─────────────────────────────────────────────────────────────────────────────
   Modal
   ───────────────────────────────────────────────────────────────────────────── */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal-overlay.hidden {
    display: none;
}

.modal {
    width: 90%;
    max-width: 500px;
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    animation: modalIn 0.3s ease;
}

@keyframes modalIn {
    from { 
        opacity: 0; 
        transform: scale(0.95); 
    }
    to { 
        opacity: 1; 
        transform: scale(1); 
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-5) var(--space-6);
    border-bottom: 1px solid var(--color-border);
}

.modal-title {
    font-size: 1.125rem;
    font-weight: 600;
}

.modal-close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: transparent;
    border: none;
    color: var(--color-text-muted);
    font-size: 1.5rem;
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: var(--transition-fast);
}

.modal-close:hover {
    background: var(--color-bg-hover);
    color: var(--color-text-primary);
}

.modal-body {
    padding: var(--space-6);
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: var(--space-3);
    padding: var(--space-4) var(--space-6);
    border-top: 1px solid var(--color-border);
}

/* ─────────────────────────────────────────────────────────────────────────────
   Utility Classes
   ───────────────────────────────────────────────────────────────────────────── */
.hidden {
    display: none !important;
}

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

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

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

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

/* ─────────────────────────────────────────────────────────────────────────────
   Responsive
   ───────────────────────────────────────────────────────────────────────────── */
@media (max-width: 1200px) {
    .build-map-container {
        grid-template-columns: 240px 1fr 280px;
    }
}

@media (max-width: 1024px) {
    .build-map-container {
        grid-template-columns: 1fr;
    }
    
    .map-sidebar,
    .node-editor {
        display: none;
    }
    
    .guided-container {
        grid-template-columns: 1fr;
    }
    
    .guided-sidebar {
        display: none;
    }
    
    .preview-main {
        grid-template-columns: 1fr;
    }
    
    .preview-sidebar {
        display: none;
    }
    
    .results-content {
        grid-template-columns: 1fr;
    }
    
    .mode-selector {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .demo-options {
        grid-template-columns: 1fr;
    }
    
    .results-header {
        flex-direction: column;
        gap: var(--space-4);
    }
    
    .results-stats {
        flex-wrap: wrap;
    }
    
    .phase-step .step-label {
        display: none;
    }
    
    .topic-depth-selector {
        flex-direction: column;
    }
}

/* ═══════════════════════════════════════════════════════════════════════════
   Topic Input Section
   ═══════════════════════════════════════════════════════════════════════════ */

.topic-input-section {
    margin-top: var(--space-10);
}

.section-divider {
    display: flex;
    align-items: center;
    margin-bottom: var(--space-8);
}

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

.divider-text {
    padding: 0 var(--space-4);
    font-size: 0.875rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.topic-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
    max-width: 600px;
    margin: 0 auto;
}

.topic-input-wrapper {
    position: relative;
}

.topic-input {
    width: 100%;
    padding: var(--space-5) var(--space-5);
    padding-right: 60px;
    background: var(--color-bg-elevated);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-lg);
    font-family: var(--font-body);
    font-size: 1rem;
    color: var(--color-text-primary);
    transition: var(--transition-fast);
}

.topic-input:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 4px var(--color-accent-muted);
}

.topic-input::placeholder {
    color: var(--color-text-ghost);
}

.topic-char-count {
    position: absolute;
    right: var(--space-4);
    top: 50%;
    transform: translateY(-50%);
    font-size: 0.75rem;
    font-family: var(--font-mono);
    color: var(--color-text-muted);
}

.topic-depth-selector {
    display: flex;
    gap: var(--space-3);
    justify-content: center;
}

.depth-option {
    cursor: pointer;
}

.depth-option input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.depth-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--space-4) var(--space-6);
    background: var(--color-bg-surface);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: var(--transition-fast);
}

.depth-option input:checked + .depth-card {
    border-color: var(--color-accent);
    background: var(--color-accent-muted);
}

.depth-option:hover .depth-card {
    border-color: var(--color-text-muted);
}

.depth-icon {
    font-size: 1.5rem;
    margin-bottom: var(--space-1);
}

.depth-name {
    font-weight: 500;
    color: var(--color-text-primary);
}

.depth-desc {
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

#generateFromTopic {
    margin-top: var(--space-2);
}

#generateFromTopic:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

#generateFromTopic svg {
    margin-right: var(--space-2);
}

/* ═══════════════════════════════════════════════════════════════════════════
   Self-Signification UI (Triads & Dyads)
   ═══════════════════════════════════════════════════════════════════════════ */

.signification-overlay {
    position: fixed;
    inset: 0;
    background: rgba(8, 8, 12, 0.9);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    animation: fadeIn 0.3s ease;
}

.signification-modal {
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-8);
    max-width: 500px;
    width: 90%;
    animation: slideIn 0.3s ease;
}

.signification-header {
    text-align: center;
    margin-bottom: var(--space-6);
}

.signification-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    margin-bottom: var(--space-2);
    color: var(--color-text-primary);
}

.signification-subtitle {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.signification-prompt {
    font-size: 1rem;
    color: var(--color-text-secondary);
    text-align: center;
    margin-bottom: var(--space-6);
    font-style: italic;
}

/* Triad Component */
.triad-container {
    position: relative;
    width: 280px;
    height: 250px;
    margin: 0 auto var(--space-8);
}

.triad-triangle {
    position: absolute;
    width: 100%;
    height: 100%;
}

.triad-triangle svg {
    width: 100%;
    height: 100%;
}

.triad-triangle path {
    fill: var(--color-bg-surface);
    stroke: var(--color-border);
    stroke-width: 2;
}

.triad-pole {
    position: absolute;
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    text-align: center;
    width: 100px;
    transform: translateX(-50%);
}

.triad-pole.top {
    top: -25px;
    left: 50%;
}

.triad-pole.bottom-left {
    bottom: -25px;
    left: 15%;
}

.triad-pole.bottom-right {
    bottom: -25px;
    left: 85%;
}

.triad-marker {
    position: absolute;
    width: 24px;
    height: 24px;
    background: var(--color-accent);
    border: 3px solid var(--color-bg-base);
    border-radius: 50%;
    cursor: grab;
    transform: translate(-50%, -50%);
    box-shadow: var(--shadow-md), 0 0 20px var(--color-accent-glow);
    transition: transform 0.1s ease;
    z-index: 10;
}

.triad-marker:active {
    cursor: grabbing;
    transform: translate(-50%, -50%) scale(1.2);
}

.triad-marker::after {
    content: '';
    position: absolute;
    inset: 3px;
    background: var(--color-accent-hover);
    border-radius: 50%;
}

/* Dyad Component */
.dyad-container {
    margin: var(--space-6) 0;
}

.dyad-labels {
    display: flex;
    justify-content: space-between;
    margin-bottom: var(--space-3);
}

.dyad-label {
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--color-text-secondary);
}

.dyad-track {
    position: relative;
    height: 40px;
    background: linear-gradient(90deg, 
        var(--color-accent-muted) 0%, 
        var(--color-bg-surface) 50%, 
        var(--color-secondary-muted) 100%
    );
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    cursor: pointer;
}

.dyad-marker {
    position: absolute;
    top: 50%;
    width: 32px;
    height: 32px;
    background: var(--color-accent);
    border: 3px solid var(--color-bg-base);
    border-radius: 50%;
    cursor: grab;
    transform: translate(-50%, -50%);
    box-shadow: var(--shadow-md), 0 0 15px var(--color-accent-glow);
    transition: left 0.1s ease;
}

.dyad-marker:active {
    cursor: grabbing;
}

.signification-actions {
    display: flex;
    justify-content: center;
    gap: var(--space-4);
    margin-top: var(--space-6);
}

.signification-skip {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    cursor: pointer;
    margin-top: var(--space-4);
    text-align: center;
}

.signification-skip:hover {
    color: var(--color-text-secondary);
}

/* ═══════════════════════════════════════════════════════════════════════════
   Progress Tracking UI
   ═══════════════════════════════════════════════════════════════════════════ */

.progress-dashboard {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-4);
    margin: var(--space-6) 0;
}

.progress-card {
    background: var(--color-bg-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-5);
}

.progress-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-3);
}

.progress-card-title {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.progress-card-value {
    font-family: var(--font-mono);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-accent);
}

.progress-bar-mini {
    height: 6px;
    background: var(--color-bg-hover);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.progress-bar-mini-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-accent), var(--color-secondary));
    border-radius: var(--radius-full);
    transition: width 0.4s ease;
}

/* Mastery Radar */
.mastery-radar {
    background: var(--color-bg-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
}

.mastery-radar-title {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-4);
    text-align: center;
}

.mastery-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.mastery-item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.mastery-item-name {
    flex: 1;
    font-size: 0.8125rem;
    color: var(--color-text-secondary);
}

.mastery-item-bar {
    flex: 2;
    height: 8px;
    background: var(--color-bg-hover);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.mastery-item-fill {
    height: 100%;
    border-radius: var(--radius-full);
    transition: width 0.4s ease;
}

.mastery-item-fill.mastered {
    background: var(--color-success);
}

.mastery-item-fill.learning {
    background: var(--color-accent);
}

.mastery-item-fill.struggling {
    background: var(--color-error);
}

.mastery-item-value {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--color-text-muted);
    width: 40px;
    text-align: right;
}

/* ═══════════════════════════════════════════════════════════════════════════
   Analytics Dashboard
   ═══════════════════════════════════════════════════════════════════════════ */

.analytics-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--space-6);
}

.analytics-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-8);
}

.analytics-title {
    font-family: var(--font-display);
    font-size: 2rem;
}

.analytics-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-4);
    margin-bottom: var(--space-8);
}

.analytics-stat-card {
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    text-align: center;
}

.analytics-stat-value {
    font-family: var(--font-mono);
    font-size: 2.5rem;
    font-weight: 600;
    color: var(--color-accent);
    margin-bottom: var(--space-2);
}

.analytics-stat-label {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.analytics-section {
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-6);
    margin-bottom: var(--space-6);
}

.analytics-section-title {
    font-size: 1.125rem;
    font-weight: 500;
    margin-bottom: var(--space-5);
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.analytics-section-title svg {
    color: var(--color-accent);
}

/* Signification Cloud Visualization */
.signification-cloud {
    position: relative;
    height: 300px;
    background: var(--color-bg-surface);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.signification-dot {
    position: absolute;
    width: 12px;
    height: 12px;
    background: var(--color-accent);
    border-radius: 50%;
    opacity: 0.6;
    transition: var(--transition-fast);
}

.signification-dot:hover {
    opacity: 1;
    transform: scale(1.5);
}

.signification-centroid {
    position: absolute;
    width: 24px;
    height: 24px;
    background: var(--color-secondary);
    border: 3px solid var(--color-bg-base);
    border-radius: 50%;
    box-shadow: var(--shadow-lg);
}

/* Decision Funnel */
.decision-funnel {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.funnel-step {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.funnel-bar {
    flex: 1;
    height: 32px;
    background: var(--color-accent-muted);
    border-radius: var(--radius-md);
    position: relative;
    overflow: hidden;
}

.funnel-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-accent), var(--color-accent-hover));
    border-radius: var(--radius-md);
    transition: width 0.4s ease;
}

.funnel-label {
    width: 120px;
    font-size: 0.8125rem;
    color: var(--color-text-secondary);
}

.funnel-value {
    width: 60px;
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--color-text-primary);
    text-align: right;
}

/* Player List */
.player-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.player-row {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-3) var(--space-4);
    background: var(--color-bg-surface);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: var(--transition-fast);
}

.player-row:hover {
    background: var(--color-bg-hover);
}

.player-avatar {
    width: 32px;
    height: 32px;
    background: var(--color-accent-muted);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-accent);
}

.player-info {
    flex: 1;
}

.player-name {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-primary);
}

.player-meta {
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

.player-progress {
    width: 100px;
    height: 6px;
    background: var(--color-bg-hover);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.player-progress-fill {
    height: 100%;
    background: var(--color-accent);
    border-radius: var(--radius-full);
}

.player-status {
    font-size: 0.75rem;
    padding: var(--space-1) var(--space-2);
    border-radius: var(--radius-sm);
}

.player-status.completed {
    background: rgba(34, 197, 94, 0.15);
    color: var(--color-success);
}

.player-status.in-progress {
    background: var(--color-accent-muted);
    color: var(--color-accent);
}

.player-status.dropped {
    background: rgba(239, 68, 68, 0.15);
    color: var(--color-error);
}

/* ═══════════════════════════════════════════════════════════════════════════
   Signification Insight Visualizations
   ═══════════════════════════════════════════════════════════════════════════ */

/* Insight Panel */
.insight-panel {
    background: var(--color-bg-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-5);
}

.insight-panel-title {
    font-family: var(--font-display);
    font-size: 1rem;
    color: var(--color-text-primary);
    margin-bottom: var(--space-1);
}

.insight-panel-subtitle {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    margin-bottom: var(--space-4);
}

/* Recommendations Banner */
.insight-recommendation {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    padding: var(--space-4);
    background: var(--color-bg-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-3);
}

.insight-recommendation.high {
    border-left: 3px solid var(--color-warning);
    background: rgba(251, 191, 36, 0.05);
}

.insight-recommendation.medium {
    border-left: 3px solid var(--color-accent);
}

.rec-icon {
    font-size: 1.25rem;
    flex-shrink: 0;
}

.rec-text {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    line-height: 1.5;
}

/* Triad Visualization */
.triad-viz-container {
    width: 100%;
    max-width: 300px;
    margin: 0 auto var(--space-4);
}

.triad-svg {
    width: 100%;
    height: auto;
}

.triad-svg .pole-label {
    font-family: var(--font-sans);
    font-size: 11px;
    fill: var(--color-text-muted);
    text-anchor: middle;
}

.triad-svg .pole-label.left {
    text-anchor: start;
}

.triad-svg .pole-label.right {
    text-anchor: end;
}

.triad-svg .triad-dot {
    fill: var(--color-accent);
    transition: var(--transition-fast);
}

.triad-svg .triad-dot:hover {
    opacity: 1 !important;
    r: 6;
}

.triad-svg .triad-centroid {
    fill: var(--color-secondary);
    stroke: var(--color-bg-base);
    stroke-width: 2;
}

.triad-svg .centroid-label {
    font-family: var(--font-mono);
    font-size: 10px;
    fill: var(--color-bg-base);
    text-anchor: middle;
    font-weight: 600;
}

/* Dyad Visualization */
.dyad-viz-container {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.dyad-bar-container {
    padding: var(--space-3);
    background: var(--color-bg-hover);
    border-radius: var(--radius-md);
}

.dyad-bar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-2);
}

.dyad-concept {
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--color-text-primary);
    text-transform: capitalize;
}

.dyad-level {
    font-size: 0.6875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.dyad-bar-track {
    position: relative;
}

.dyad-bar-labels {
    display: flex;
    justify-content: space-between;
    font-size: 0.6875rem;
    color: var(--color-text-muted);
    margin-bottom: var(--space-1);
}

.dyad-bar-bg {
    height: 8px;
    background: linear-gradient(90deg, 
        rgba(239, 68, 68, 0.3) 0%, 
        var(--color-bg-surface) 50%, 
        rgba(34, 197, 94, 0.3) 100%
    );
    border-radius: var(--radius-full);
    position: relative;
}

.dyad-variance {
    position: absolute;
    top: -2px;
    height: 12px;
    background: var(--color-accent-muted);
    border-radius: var(--radius-full);
    opacity: 0.5;
}

.dyad-marker-dot {
    position: absolute;
    top: 50%;
    width: 14px;
    height: 14px;
    background: var(--color-accent);
    border: 2px solid var(--color-bg-base);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    box-shadow: 0 0 10px var(--color-accent-glow);
}

.dyad-bar-meta {
    font-size: 0.6875rem;
    color: var(--color-text-muted);
    margin-top: var(--space-2);
}

/* Insight Cards */
.insight-interpretation {
    margin-top: var(--space-4);
}

.insight-card {
    padding: var(--space-4);
    background: var(--color-bg-hover);
    border-radius: var(--radius-md);
    border-left: 3px solid var(--color-accent);
}

.insight-title {
    font-weight: 600;
    color: var(--color-text-primary);
    text-transform: capitalize;
    margin-bottom: var(--space-1);
}

.insight-pattern {
    font-size: 0.875rem;
    color: var(--color-accent);
    margin-bottom: var(--space-2);
}

.insight-detail {
    font-size: 0.8125rem;
    color: var(--color-text-secondary);
    line-height: 1.5;
}

.insight-meta {
    font-size: 0.6875rem;
    color: var(--color-text-muted);
    margin-top: var(--space-2);
}

/* Calibration Card */
.calibration-card {
    padding: var(--space-4);
    background: var(--color-bg-hover);
    border-radius: var(--radius-md);
}

.calibration-status {
    font-weight: 600;
    color: var(--color-text-primary);
    text-transform: capitalize;
    margin-bottom: var(--space-2);
}

.calibration-message {
    font-size: 0.8125rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-2);
}

.calibration-action {
    font-size: 0.75rem;
    color: var(--color-accent);
    font-style: italic;
}

/* Skill Distribution */
.skill-distribution-chart {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.skill-bar-row {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.skill-label {
    width: 120px;
    font-size: 0.75rem;
    color: var(--color-text-secondary);
}

.skill-bar {
    flex: 1;
    height: 24px;
    background: var(--color-bg-surface);
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.skill-bar-fill {
    height: 100%;
    border-radius: var(--radius-sm);
    transition: width 0.4s ease;
}

.skill-bar-fill.excellent {
    background: linear-gradient(90deg, var(--color-success), #4ade80);
}

.skill-bar-fill.good {
    background: linear-gradient(90deg, var(--color-warning), #fcd34d);
}

.skill-bar-fill.struggling {
    background: linear-gradient(90deg, var(--color-error), #f87171);
}

.skill-count {
    width: 30px;
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--color-text-primary);
    text-align: right;
}

.skill-summary {
    margin-top: var(--space-4);
    padding-top: var(--space-4);
    border-top: 1px solid var(--color-border);
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

.skill-summary strong {
    color: var(--color-accent);
}

/* No Data State */
.no-data {
    text-align: center;
    padding: var(--space-6);
    color: var(--color-text-muted);
    font-size: 0.875rem;
}

/* Responsive Analytics */
@media (max-width: 1024px) {
    .analytics-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

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

/* ═══════════════════════════════════════════════════════════════════════════
   Enhanced Analytics Styles
   ═══════════════════════════════════════════════════════════════════════════ */

/* Difficult Scenarios */
.difficult-scenarios-grid {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.difficult-scenario-card {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding: var(--space-4);
    background: var(--color-bg-surface);
    border-radius: var(--radius-md);
    border-left: 3px solid var(--color-error);
}

.scenario-rank {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-error);
    min-width: 30px;
}

.scenario-details {
    flex: 1;
    min-width: 0;
}

.scenario-name {
    font-size: 0.875rem;
    color: var(--color-text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.scenario-concept {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    margin-top: var(--space-1);
}

.scenario-stats {
    display: flex;
    gap: var(--space-4);
}

.scenario-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: 50px;
}

.scenario-stat .stat-value {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    font-weight: 600;
}

.scenario-stat .stat-label {
    font-size: 0.625rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
}

/* Concept Performance */
.concept-performance-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.concept-perf-row {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.concept-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.concept-name {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-primary);
}

.concept-players {
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

.concept-bars {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.concept-bar-track {
    height: 8px;
    background: var(--color-bg-surface);
    border-radius: var(--radius-full);
    position: relative;
    overflow: hidden;
}

.concept-bar-fill {
    position: absolute;
    top: 0;
    height: 100%;
}

.concept-bar-fill.mastered {
    background: var(--color-success);
    left: 0;
}

.concept-bar-fill.struggling {
    background: var(--color-error);
}

.concept-bar-labels {
    display: flex;
    justify-content: space-between;
    font-size: 0.6875rem;
}

/* Mini Chart (Engagement Trends) */
.mini-chart {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    height: 100px;
    gap: var(--space-2);
    padding: var(--space-2) 0;
}

.chart-bar-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    flex: 1;
    height: 100%;
}

.chart-bar {
    width: 100%;
    background: linear-gradient(180deg, var(--color-accent), var(--color-accent-muted));
    border-radius: var(--radius-sm) var(--radius-sm) 0 0;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    min-height: 4px;
    transition: height 0.3s ease;
}

.chart-bar-value {
    font-size: 0.625rem;
    font-family: var(--font-mono);
    color: var(--color-bg-deep);
    padding-top: 2px;
}

.chart-bar-label {
    font-size: 0.625rem;
    color: var(--color-text-muted);
    margin-top: var(--space-1);
}

/* Player Segments */
.segments-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-3);
}

.segment-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--space-3);
    background: var(--color-bg-surface);
    border-radius: var(--radius-md);
    text-align: center;
}

.segment-icon {
    font-size: 1.25rem;
    margin-bottom: var(--space-1);
}

.segment-value {
    font-family: var(--font-mono);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-accent);
}

.segment-label {
    font-size: 0.625rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
}

/* Response Times */
.response-time-stats {
    display: flex;
    justify-content: space-around;
    padding: var(--space-4) 0;
}

.rt-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.rt-value {
    font-family: var(--font-mono);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-accent);
}

.rt-label {
    font-size: 0.6875rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
}

/* Hourly Chart */
.hourly-chart {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    height: 80px;
    gap: var(--space-2);
}

.hourly-bar-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    flex: 1;
    height: 100%;
}

.hourly-bar {
    width: 100%;
    background: linear-gradient(180deg, var(--color-secondary), var(--color-secondary-muted));
    border-radius: var(--radius-sm) var(--radius-sm) 0 0;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    min-height: 4px;
}

.hourly-value {
    font-size: 0.5rem;
    font-family: var(--font-mono);
    color: var(--color-bg-deep);
    padding-top: 1px;
}

.hourly-label {
    font-size: 0.5rem;
    color: var(--color-text-muted);
    margin-top: var(--space-1);
}

/* Achievements */
.achievements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: var(--space-3);
}

.achievement-card {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3);
    background: var(--color-bg-surface);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
}

.achievement-icon {
    font-size: 1.5rem;
}

.achievement-info {
    flex: 1;
}

.achievement-name {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-primary);
}

.achievement-desc {
    font-size: 0.6875rem;
    color: var(--color-text-muted);
}

.achievement-count {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--color-accent);
}

/* Responsive Enhanced Analytics */
@media (max-width: 768px) {
    .segments-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .scenario-stats {
        flex-wrap: wrap;
        gap: var(--space-2);
    }
    
    .response-time-stats {
        flex-wrap: wrap;
    }
}