/* ============================================
   AKANUKE METHOD - Happiness Equation Laboratory
   A Steve Jobs Approved Design System
   ============================================ */

/* === CSS Variables === */
:root {
    /* Core Colors */
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-tertiary: #1a1a25;
    --bg-card: rgba(20, 20, 30, 0.8);
    
    /* Accent Colors */
    --accent-primary: #00f0ff;
    --accent-secondary: #8b5cf6;
    --accent-tertiary: #f472b6;
    --accent-gold: #fbbf24;
    --accent-success: #10b981;
    --accent-warning: #f59e0b;
    
    /* Text Colors */
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-tertiary: rgba(255, 255, 255, 0.5);
    --text-muted: rgba(255, 255, 255, 0.3);
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #00f0ff 0%, #8b5cf6 50%, #f472b6 100%);
    --gradient-secondary: linear-gradient(135deg, #8b5cf6 0%, #f472b6 100%);
    --gradient-gold: linear-gradient(135deg, #fbbf24 0%, #f59e0b 100%);
    --gradient-dark: linear-gradient(180deg, rgba(10, 10, 15, 0) 0%, rgba(10, 10, 15, 1) 100%);
    
    /* Shadows */
    --shadow-glow: 0 0 30px rgba(0, 240, 255, 0.3);
    --shadow-glow-purple: 0 0 30px rgba(139, 92, 246, 0.3);
    --shadow-glow-pink: 0 0 30px rgba(244, 114, 182, 0.3);
    --shadow-card: 0 10px 40px rgba(0, 0, 0, 0.5);
    
    /* Borders */
    --border-subtle: 1px solid rgba(255, 255, 255, 0.1);
    --border-glow: 1px solid rgba(0, 240, 255, 0.3);
    
    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;
    
    /* Typography */
    --font-display: 'Orbitron', sans-serif;
    --font-body: 'Noto Sans JP', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    --transition-slower: 0.8s ease;
    
    /* Z-Index */
    --z-particles: 0;
    --z-content: 10;
    --z-nav: 100;
    --z-modal: 200;
    --z-loading: 300;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-body);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

::selection {
    background: var(--accent-primary);
    color: var(--bg-primary);
}

a {
    color: inherit;
    text-decoration: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

/* === Particle Background === */
#particles-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: var(--z-particles);
    pointer-events: none;
}

/* === Grid Overlay === */
.grid-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(0, 240, 255, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 240, 255, 0.03) 1px, transparent 1px);
    background-size: 50px 50px;
    z-index: 1;
    pointer-events: none;
}

/* === Sound Toggle === */
.sound-btn {
    position: fixed;
    top: var(--space-lg);
    right: var(--space-lg);
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--bg-card);
    border: var(--border-subtle);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: var(--z-nav);
    transition: var(--transition-normal);
    backdrop-filter: blur(10px);
}

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

.sound-btn.muted i::before {
    content: "\f6a9";
}

/* === Loading Screen === */
#loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: var(--z-loading);
    transition: opacity 0.8s ease, visibility 0.8s ease;
}

#loading-screen.hidden {
    opacity: 0;
    visibility: hidden;
}

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

.loading-ring {
    width: 80px;
    height: 80px;
    border: 3px solid transparent;
    border-top-color: var(--accent-primary);
    border-right-color: var(--accent-secondary);
    border-radius: 50%;
    margin: 0 auto var(--space-xl);
    animation: loadingSpin 1s linear infinite;
    position: relative;
}

.loading-ring::before {
    content: '';
    position: absolute;
    top: 5px;
    left: 5px;
    right: 5px;
    bottom: 5px;
    border: 3px solid transparent;
    border-bottom-color: var(--accent-tertiary);
    border-left-color: var(--accent-gold);
    border-radius: 50%;
    animation: loadingSpin 1.5s linear infinite reverse;
}

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

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

.loading-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: 0.2em;
}

.loading-subtitle {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-tertiary);
    letter-spacing: 0.1em;
}

.loading-progress {
    width: 200px;
    height: 2px;
    background: var(--bg-tertiary);
    border-radius: 1px;
    margin: var(--space-xl) auto;
    overflow: hidden;
}

.loading-bar {
    height: 100%;
    width: 0%;
    background: var(--gradient-primary);
    border-radius: 1px;
    animation: loadingProgress 2s ease-out forwards;
}

@keyframes loadingProgress {
    to { width: 100%; }
}

.loading-equations {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--accent-primary);
    opacity: 0;
    animation: fadeIn 0.5s ease 1s forwards;
}

@keyframes fadeIn {
    to { opacity: 1; }
}

/* === Navigation === */
#main-nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 70px;
    background: rgba(10, 10, 15, 0.9);
    backdrop-filter: blur(20px);
    border-bottom: var(--border-subtle);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--space-2xl);
    z-index: var(--z-nav);
    transform: translateY(-100%);
    transition: transform var(--transition-slow);
}

#main-nav.visible {
    transform: translateY(0);
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.brand-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-primary);
    border-radius: 10px;
    font-size: 1.25rem;
    color: var(--bg-primary);
}

.brand-text {
    font-family: var(--font-display);
    font-size: 1.125rem;
    font-weight: 700;
    letter-spacing: 0.1em;
}

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

.nav-links {
    display: flex;
    gap: var(--space-lg);
}

.nav-link {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    border-radius: 8px;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 500;
    letter-spacing: 0.1em;
    color: var(--text-secondary);
    transition: var(--transition-normal);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width var(--transition-normal);
}

.nav-link:hover,
.nav-link.active {
    color: var(--text-primary);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 80%;
}

.nav-icon {
    font-size: 0.875rem;
    opacity: 0.7;
}

.nav-progress {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--bg-tertiary);
}

.progress-bar {
    height: 100%;
    width: 0%;
    background: var(--gradient-primary);
    transition: width var(--transition-fast);
}

/* === Main Content === */
#main-content {
    position: relative;
    z-index: var(--z-content);
}

/* === Section Base === */
.section {
    min-height: 100vh;
    padding: var(--space-4xl) var(--space-2xl);
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-4xl);
}

.section-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-lg);
    background: var(--bg-card);
    border: var(--border-subtle);
    border-radius: 50px;
    margin-bottom: var(--space-lg);
}

.badge-number {
    font-family: var(--font-display);
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--accent-primary);
}

.badge-text {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.2em;
    color: var(--text-secondary);
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 700;
    margin-bottom: var(--space-md);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-desc {
    font-size: 1.125rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* === Hero Section === */
.hero-section {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding-top: 0;
    position: relative;
    overflow: hidden;
}

.hero-content {
    text-align: center;
    max-width: 900px;
    z-index: 2;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-lg);
    background: rgba(0, 240, 255, 0.1);
    border: 1px solid rgba(0, 240, 255, 0.3);
    border-radius: 50px;
    margin-bottom: var(--space-xl);
    animation: fadeInUp 0.8s ease 2.5s both;
}

.hero-badge i {
    color: var(--accent-gold);
}

.hero-badge span {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.2em;
    color: var(--accent-primary);
}

.hero-title {
    margin-bottom: var(--space-lg);
}

.title-line {
    display: block;
    font-family: var(--font-display);
    font-weight: 900;
    letter-spacing: 0.1em;
    line-height: 1.1;
}

.title-line:first-child {
    font-size: clamp(3rem, 10vw, 7rem);
    color: var(--text-primary);
    animation: fadeInUp 0.8s ease 2.7s both;
}

.title-line.accent {
    font-size: clamp(2.5rem, 8vw, 5rem);
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInUp 0.8s ease 2.9s both;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-2xl);
    animation: fadeInUp 0.8s ease 3.1s both;
}

.typing-text {
    color: var(--accent-primary);
    border-right: 2px solid var(--accent-primary);
    padding-right: 4px;
}

.hero-equation {
    margin-bottom: var(--space-2xl);
    animation: fadeInUp 0.8s ease 3.3s both;
}

.equation-display {
    display: inline-flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-lg) var(--space-2xl);
    background: var(--bg-card);
    border: var(--border-glow);
    border-radius: 16px;
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-glow);
}

.equation-display.main-equation {
    font-size: clamp(1.25rem, 3vw, 2rem);
}

.eq-part {
    font-family: var(--font-display);
    font-weight: 700;
    padding: var(--space-sm) var(--space-md);
    border-radius: 8px;
    transition: var(--transition-normal);
}

.eq-part.result {
    background: var(--gradient-gold);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.eq-part.var1 {
    background: rgba(0, 240, 255, 0.1);
    border: 1px solid rgba(0, 240, 255, 0.3);
    color: var(--accent-primary);
}

.eq-part.var2 {
    background: rgba(139, 92, 246, 0.1);
    border: 1px solid rgba(139, 92, 246, 0.3);
    color: var(--accent-secondary);
}

.eq-symbol {
    font-family: var(--font-mono);
    color: var(--text-tertiary);
}

.equation-note {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    margin-top: var(--space-md);
    font-size: 0.875rem;
    color: var(--text-tertiary);
}

.equation-note i {
    color: var(--accent-primary);
}

.hero-cta {
    display: flex;
    gap: var(--space-lg);
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease 3.5s both;
}

.cta-button {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    border-radius: 12px;
    font-family: var(--font-display);
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.cta-button.primary {
    background: var(--gradient-primary);
    color: var(--bg-primary);
}

.cta-button.primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(0, 240, 255, 0.4);
}

.cta-button.secondary {
    background: transparent;
    border: var(--border-glow);
    color: var(--accent-primary);
}

.cta-button.secondary:hover {
    background: rgba(0, 240, 255, 0.1);
}

.btn-glow {
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    transition: left 0.5s ease;
}

.cta-button:hover .btn-glow {
    left: 100%;
}

/* Hero Visual - Orbital System */
.hero-visual {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 600px;
    opacity: 0.3;
    z-index: 1;
}

.orbital-system {
    position: relative;
    width: 100%;
    height: 100%;
}

.orbit {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    border: 1px solid rgba(0, 240, 255, 0.2);
    border-radius: 50%;
    animation: orbitRotate 20s linear infinite;
}

.orbit-1 {
    width: 200px;
    height: 200px;
    animation-duration: 15s;
}

.orbit-2 {
    width: 350px;
    height: 350px;
    animation-duration: 25s;
    animation-direction: reverse;
}

.orbit-3 {
    width: 500px;
    height: 500px;
    animation-duration: 35s;
}

@keyframes orbitRotate {
    to { transform: translate(-50%, -50%) rotate(360deg); }
}

.orbit-dot {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 12px;
    height: 12px;
    background: var(--accent-primary);
    border-radius: 50%;
    box-shadow: 0 0 20px var(--accent-primary);
}

.orbit-dot::after {
    content: attr(data-label);
    position: absolute;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    font-family: var(--font-mono);
    font-size: 0.625rem;
    color: var(--accent-primary);
    white-space: nowrap;
}

.orbit-center {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-display);
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--bg-primary);
    box-shadow: 0 0 50px rgba(0, 240, 255, 0.5);
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: var(--space-2xl);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-md);
    animation: fadeInUp 0.8s ease 3.7s both;
}

.mouse {
    width: 24px;
    height: 40px;
    border: 2px solid var(--text-tertiary);
    border-radius: 12px;
    position: relative;
}

.wheel {
    width: 4px;
    height: 8px;
    background: var(--accent-primary);
    border-radius: 2px;
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    animation: scrollWheel 2s ease-in-out infinite;
}

@keyframes scrollWheel {
    0%, 100% { opacity: 1; transform: translateX(-50%) translateY(0); }
    50% { opacity: 0; transform: translateX(-50%) translateY(12px); }
}

.scroll-indicator span {
    font-family: var(--font-mono);
    font-size: 0.625rem;
    letter-spacing: 0.2em;
    color: var(--text-tertiary);
}

/* Animation Keyframes */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* === Map Section === */
.map-section {
    background: var(--bg-secondary);
    padding-top: calc(70px + var(--space-3xl));
}

.map-container {
    position: relative;
    max-width: 1400px;
    margin: 0 auto;
    min-height: 800px;
}

.map-wrapper {
    position: relative;
    width: 100%;
    height: 800px;
    overflow: hidden;
    border: var(--border-subtle);
    border-radius: 24px;
    background: var(--bg-card);
    backdrop-filter: blur(10px);
}

.connection-layer {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
}

.connection-layer line {
    stroke: rgba(0, 240, 255, 0.3);
    stroke-width: 2;
    stroke-dasharray: 5, 5;
    animation: connectionFlow 1s linear infinite;
}

@keyframes connectionFlow {
    to { stroke-dashoffset: -10; }
}

.node-container {
    position: relative;
    width: 100%;
    height: 100%;
    z-index: 2;
}

.equation-node {
    position: absolute;
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-tertiary);
    border: var(--border-subtle);
    border-radius: 12px;
    cursor: pointer;
    transition: var(--transition-normal);
    z-index: 10;
}

.equation-node:hover {
    transform: scale(1.1);
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-glow);
    z-index: 20;
}

.equation-node .node-glow {
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    border-radius: 14px;
    background: var(--gradient-primary);
    opacity: 0;
    z-index: -1;
    transition: opacity var(--transition-normal);
}

.equation-node:hover .node-glow,
.equation-node.highlight-node .node-glow {
    opacity: 0.5;
    animation: nodeGlow 2s ease-in-out infinite;
}

@keyframes nodeGlow {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 0.6; }
}

.node-content {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.node-icon {
    font-size: 1rem;
    color: var(--accent-primary);
}

.node-label {
    font-family: var(--font-display);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.05em;
}

/* Node Level Styles */
.equation-node.level-0 {
    top: 50px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--gradient-gold);
    color: var(--bg-primary);
    padding: var(--space-md) var(--space-xl);
}

.equation-node.level-0 .node-icon {
    color: var(--bg-primary);
}

.equation-node.level-0 .node-label {
    font-size: 1rem;
}

.equation-node.level-1[data-id="environment"] {
    top: 150px;
    left: 25%;
}

.equation-node.level-1[data-id="contribution"] {
    top: 150px;
    left: 65%;
}

/* Environment children */
.equation-node[data-id="companions"] { top: 250px; left: 8%; }
.equation-node[data-id="pioneers"] { top: 250px; left: 18%; }
.equation-node[data-id="guidelines"] { top: 250px; left: 28%; }
.equation-node[data-id="place"] { top: 250px; left: 38%; }

/* Guideline children */
.equation-node[data-id="knowledge"] { top: 340px; left: 22%; }
.equation-node[data-id="system"] { top: 340px; left: 32%; }

/* Contribution children */
.equation-node[data-id="akanuke"] { top: 250px; left: 55%; }
.equation-node[data-id="self-realization"] { top: 250px; left: 68%; }
.equation-node[data-id="others-change"] { top: 250px; left: 80%; }
.equation-node[data-id="self-growth"] { top: 250px; left: 92%; }

/* Akanuke highlight */
.equation-node.highlight-node {
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.3) 0%, rgba(244, 114, 182, 0.3) 100%);
    border-color: var(--accent-secondary);
}

.equation-node.highlight-node .node-glow.special {
    background: var(--gradient-secondary);
    opacity: 0.5;
}

/* Akanuke children */
.equation-node[data-id="health"] { top: 350px; left: 45%; }
.equation-node[data-id="confidence"] { top: 350px; left: 55%; }
.equation-node[data-id="axis"] { top: 350px; left: 65%; }

/* Health children */
.equation-node[data-id="sleep"] { top: 440px; left: 35%; }
.equation-node[data-id="diet"] { top: 440px; left: 42%; }
.equation-node[data-id="exercise"] { top: 440px; left: 49%; }
.equation-node[data-id="stress"] { top: 440px; left: 56%; }

/* Confidence children */
.equation-node[data-id="experience"] { top: 440px; left: 63%; }
.equation-node[data-id="self-foundation"] { top: 440px; left: 73%; }
.equation-node[data-id="habituation"] { top: 440px; left: 83%; }

/* Axis children */
.equation-node[data-id="values"] { top: 530px; left: 58%; }
.equation-node[data-id="ideal"] { top: 530px; left: 65%; }
.equation-node[data-id="rules"] { top: 530px; left: 72%; }

/* Experience children */
.equation-node[data-id="action-power"] { top: 530px; left: 35%; }
.equation-node[data-id="failure"] { top: 530px; left: 42%; }
.equation-node[data-id="success"] { top: 530px; left: 49%; }
.equation-node[data-id="output"] { top: 530px; left: 56%; }

/* Action power children */
.equation-node[data-id="action"] { top: 620px; left: 32%; }
.equation-node[data-id="challenge"] { top: 620px; left: 40%; }

/* Self-foundation children */
.equation-node[data-id="self-awareness"] { top: 530px; left: 78%; }
.equation-node[data-id="self-acceptance"] { top: 530px; left: 85%; }
.equation-node[data-id="self-efficacy"] { top: 620px; left: 78%; }
.equation-node[data-id="self-esteem"] { top: 620px; left: 85%; }

/* Habituation children */
.equation-node[data-id="record"] { top: 530px; left: 90%; }
.equation-node[data-id="continuity"] { top: 620px; left: 86%; }
.equation-node[data-id="gratitude"] { top: 620px; left: 93%; }

/* Node Tooltip */
.node-tooltip {
    position: absolute;
    bottom: calc(100% + 10px);
    left: 50%;
    transform: translateX(-50%);
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-primary);
    border: var(--border-glow);
    border-radius: 8px;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-normal);
    z-index: 100;
}

.equation-node:hover .node-tooltip {
    opacity: 1;
    visibility: visible;
}

.tooltip-equation {
    display: block;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--accent-primary);
}

.tooltip-desc {
    display: block;
    font-size: 0.625rem;
    color: var(--text-tertiary);
    margin-top: var(--space-xs);
}

/* Map Controls */
.map-controls {
    position: absolute;
    bottom: var(--space-lg);
    right: var(--space-lg);
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    z-index: 50;
}

.map-btn {
    width: 40px;
    height: 40px;
    background: var(--bg-card);
    border: var(--border-subtle);
    border-radius: 8px;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-normal);
}

.map-btn:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

.map-level-filter {
    background: var(--bg-card);
    border: var(--border-subtle);
    border-radius: 8px;
    padding: var(--space-sm);
    margin-top: var(--space-sm);
}

.filter-label {
    display: block;
    font-family: var(--font-mono);
    font-size: 0.625rem;
    color: var(--text-tertiary);
    text-align: center;
    margin-bottom: var(--space-xs);
}

.map-level-filter input[type="range"] {
    width: 100%;
    -webkit-appearance: none;
    background: var(--bg-tertiary);
    height: 4px;
    border-radius: 2px;
}

.map-level-filter input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 16px;
    height: 16px;
    background: var(--accent-primary);
    border-radius: 50%;
    cursor: pointer;
}

.filter-value {
    display: block;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--accent-primary);
    text-align: center;
    margin-top: var(--space-xs);
}

/* === Equations Section === */
.equations-section {
    padding-top: calc(70px + var(--space-3xl));
}

.equations-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--space-xl);
    max-width: 1400px;
    margin: 0 auto;
}

.equation-card {
    position: relative;
    background: var(--bg-card);
    border: var(--border-subtle);
    border-radius: 20px;
    overflow: hidden;
    transition: var(--transition-normal);
    backdrop-filter: blur(10px);
}

.equation-card:hover {
    transform: translateY(-5px);
    border-color: rgba(0, 240, 255, 0.3);
}

.equation-card.featured {
    grid-column: span 2;
}

.equation-card.highlight {
    border-color: var(--accent-secondary);
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.1) 0%, rgba(244, 114, 182, 0.1) 100%);
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-lg);
    border-bottom: var(--border-subtle);
}

.card-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 240, 255, 0.1);
    border-radius: 12px;
    font-size: 1.25rem;
    color: var(--accent-primary);
}

.card-icon.special {
    background: var(--gradient-secondary);
    color: var(--text-primary);
}

.card-meta {
    text-align: right;
}

.meta-level {
    display: block;
    font-family: var(--font-mono);
    font-size: 0.625rem;
    color: var(--accent-primary);
    letter-spacing: 0.1em;
}

.meta-type {
    display: block;
    font-family: var(--font-mono);
    font-size: 0.625rem;
    color: var(--text-tertiary);
    letter-spacing: 0.05em;
}

.card-body {
    padding: var(--space-lg);
}

.card-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--space-md);
}

.card-equation {
    margin-bottom: var(--space-lg);
}

.eq-visual {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md);
    background: var(--bg-tertiary);
    border-radius: 12px;
    font-family: var(--font-mono);
    font-size: 0.875rem;
}

.eq-visual.compact {
    font-size: 0.75rem;
}

.eq-result {
    font-weight: 700;
    color: var(--accent-gold);
}

.eq-result.special {
    background: var(--gradient-secondary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.eq-equals {
    color: var(--text-tertiary);
}

.eq-var {
    padding: var(--space-xs) var(--space-sm);
    background: rgba(0, 240, 255, 0.1);
    border-radius: 4px;
    color: var(--accent-primary);
}

.eq-var.clickable {
    cursor: pointer;
    transition: var(--transition-normal);
}

.eq-var.clickable:hover {
    background: rgba(0, 240, 255, 0.2);
    transform: scale(1.05);
}

.eq-var.highlight {
    background: rgba(139, 92, 246, 0.2);
    color: var(--accent-secondary);
    border: 1px solid rgba(139, 92, 246, 0.3);
}

.eq-op {
    color: var(--text-tertiary);
}

.card-desc {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.7;
    margin-bottom: var(--space-md);
}

.card-desc strong {
    color: var(--accent-primary);
}

.card-insight {
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
    padding: var(--space-md);
    background: rgba(0, 240, 255, 0.05);
    border-left: 3px solid var(--accent-primary);
    border-radius: 0 8px 8px 0;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.card-insight i {
    color: var(--accent-gold);
    margin-top: 2px;
}

.card-insight.special {
    background: rgba(139, 92, 246, 0.1);
    border-left-color: var(--accent-secondary);
}

.card-glow {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gradient-primary);
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.equation-card:hover .card-glow {
    opacity: 1;
}

.card-glow.special {
    background: var(--gradient-secondary);
}

/* === Journey Section === */
.journey-section {
    background: var(--bg-secondary);
    padding-top: calc(70px + var(--space-3xl));
}

.journey-container {
    max-width: 900px;
    margin: 0 auto;
}

.journey-timeline {
    position: relative;
    padding-left: 80px;
}

.journey-timeline::before {
    content: '';
    position: absolute;
    left: 35px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, var(--accent-primary) 0%, var(--accent-secondary) 50%, var(--accent-gold) 100%);
}

.journey-step {
    position: relative;
    margin-bottom: var(--space-2xl);
    opacity: 0;
    transform: translateX(-20px);
    transition: all 0.6s ease;
}

.journey-step.visible {
    opacity: 1;
    transform: translateX(0);
}

.step-marker {
    position: absolute;
    left: -80px;
    top: 0;
    width: 70px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xs);
}

.marker-number {
    font-family: var(--font-display);
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--accent-primary);
}

.marker-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border: 2px solid var(--accent-primary);
    border-radius: 50%;
    color: var(--accent-primary);
    z-index: 2;
    position: relative;
}

.step-marker.special .marker-icon {
    background: var(--gradient-secondary);
    border-color: var(--accent-secondary);
    color: var(--text-primary);
}

.step-marker.final .marker-icon {
    background: var(--gradient-gold);
    border-color: var(--accent-gold);
    color: var(--bg-primary);
}

.step-content {
    background: var(--bg-card);
    border: var(--border-subtle);
    border-radius: 16px;
    padding: var(--space-xl);
    transition: var(--transition-normal);
}

.journey-step:hover .step-content {
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-glow);
}

.journey-step.highlight .step-content {
    border-color: var(--accent-secondary);
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.1) 0%, rgba(244, 114, 182, 0.1) 100%);
}

.journey-step.final .step-content {
    border-color: var(--accent-gold);
    background: linear-gradient(135deg, rgba(251, 191, 36, 0.1) 0%, rgba(245, 158, 11, 0.1) 100%);
}

.step-title {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--space-sm);
}

.step-equation {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--accent-primary);
    margin-bottom: var(--space-md);
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-tertiary);
    border-radius: 8px;
    display: inline-block;
}

.step-equation.special {
    color: var(--accent-secondary);
}

.step-equation.final {
    color: var(--accent-gold);
}

.step-desc {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    line-height: 1.7;
    margin-bottom: var(--space-md);
}

.step-progress {
    height: 4px;
    background: var(--bg-tertiary);
    border-radius: 2px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--gradient-primary);
    width: 0;
    transition: width 1s ease;
}

.progress-fill.special {
    background: var(--gradient-secondary);
}

.progress-fill.final {
    background: var(--gradient-gold);
}

/* === Conclusion Section === */
.conclusion-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding: var(--space-4xl) var(--space-xl);
}

.conclusion-content {
    text-align: center;
    max-width: 800px;
    position: relative;
    z-index: 2;
}

.conclusion-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-xl);
    background: var(--bg-card);
    border: var(--border-subtle);
    border-radius: 50px;
    margin-bottom: var(--space-2xl);
}

.badge-icon {
    font-size: 1.25rem;
    color: var(--accent-gold);
}

.conclusion-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: var(--space-3xl);
}

.highlight-text {
    background: var(--gradient-secondary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.conclusion-diagram {
    margin-bottom: var(--space-3xl);
}

.diagram-flow {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-md);
}

.flow-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-xl);
    background: var(--bg-card);
    border: var(--border-subtle);
    border-radius: 12px;
}

.flow-item.goal {
    background: var(--gradient-gold);
    border: none;
}

.flow-item.goal .flow-icon,
.flow-item.goal .flow-label {
    color: var(--bg-primary);
}

.flow-item.question {
    border-color: var(--accent-primary);
}

.flow-item.answer {
    background: var(--gradient-secondary);
    border: none;
    padding: var(--space-lg) var(--space-2xl);
}

.flow-item.answer .flow-icon,
.flow-item.answer .flow-label {
    color: var(--text-primary);
}

.flow-icon {
    font-size: 1.5rem;
    color: var(--accent-primary);
}

.flow-icon.special {
    color: var(--text-primary);
}

.flow-label {
    font-family: var(--font-display);
    font-size: 1.125rem;
    font-weight: 600;
}

.flow-arrow {
    color: var(--text-tertiary);
    font-size: 1.5rem;
}

.flow-arrow.highlight-arrow {
    color: var(--accent-secondary);
    animation: arrowPulse 1.5s ease infinite;
}

@keyframes arrowPulse {
    0%, 100% { transform: translateY(0); opacity: 1; }
    50% { transform: translateY(5px); opacity: 0.7; }
}

.flow-split {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    flex-wrap: wrap;
    justify-content: center;
}

.split-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-lg);
    background: var(--bg-card);
    border: var(--border-subtle);
    border-radius: 12px;
    min-width: 150px;
}

.split-icon {
    font-size: 1.5rem;
    color: var(--accent-primary);
}

.split-label {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 600;
}

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

.split-connector {
    font-family: var(--font-mono);
    font-size: 1.5rem;
    color: var(--text-tertiary);
}

.conclusion-message {
    margin-bottom: var(--space-3xl);
}

.message-box {
    position: relative;
    padding: var(--space-2xl);
    background: var(--bg-card);
    border: var(--border-subtle);
    border-radius: 20px;
}

.message-icon {
    color: var(--accent-primary);
    opacity: 0.3;
    font-size: 1.5rem;
}

.message-icon.end {
    position: absolute;
    bottom: var(--space-lg);
    right: var(--space-lg);
}

.message-text {
    font-size: 1.125rem;
    line-height: 2;
    color: var(--text-secondary);
}

.message-text strong {
    color: var(--accent-secondary);
    font-weight: 700;
}

.conclusion-cta {
    margin-bottom: var(--space-4xl);
}

.cta-box {
    padding: var(--space-2xl);
    background: linear-gradient(135deg, rgba(0, 240, 255, 0.1) 0%, rgba(139, 92, 246, 0.1) 100%);
    border: var(--border-glow);
    border-radius: 20px;
}

.cta-title {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--space-sm);
}

.cta-desc {
    color: var(--text-secondary);
    margin-bottom: var(--space-xl);
}

.cta-button.final {
    display: inline-flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-lg) var(--space-2xl);
    background: var(--gradient-primary);
    border-radius: 12px;
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 600;
    color: var(--bg-primary);
    transition: var(--transition-normal);
}

.cta-button.final:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(0, 240, 255, 0.4);
}

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

.footer-brand {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
}

.brand-logo {
    font-size: 1.5rem;
    color: var(--accent-primary);
}

.brand-name {
    font-family: var(--font-display);
    font-size: 1.125rem;
    font-weight: 700;
    letter-spacing: 0.1em;
}

.footer-text {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-tertiary);
    letter-spacing: 0.1em;
    margin-bottom: var(--space-sm);
}

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

/* === AKANUKELAB Links & Buttons === */
.inline-link {
    color: var(--accent-primary);
    text-decoration: none;
    font-weight: 600;
    border-bottom: 1px solid transparent;
    transition: var(--transition-normal);
}

.inline-link:hover {
    color: var(--accent-secondary);
    border-bottom-color: var(--accent-secondary);
}

.cta-buttons-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    align-items: center;
}

.cta-button.primary-cta {
    background: var(--gradient-gold);
    color: var(--bg-primary);
    font-size: 1.125rem;
    padding: var(--space-lg) var(--space-3xl);
    animation: ctaPulse 2s ease-in-out infinite;
}

.cta-button.primary-cta:hover {
    transform: translateY(-5px) scale(1.02);
    box-shadow: 0 20px 50px rgba(251, 191, 36, 0.5);
}

@keyframes ctaPulse {
    0%, 100% { box-shadow: 0 0 20px rgba(251, 191, 36, 0.3); }
    50% { box-shadow: 0 0 40px rgba(251, 191, 36, 0.6); }
}

.cta-button.secondary-cta {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    background: transparent;
    border: 1px solid rgba(0, 240, 255, 0.3);
    border-radius: 12px;
    font-family: var(--font-display);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--accent-primary);
    transition: var(--transition-normal);
}

.cta-button.secondary-cta:hover {
    background: rgba(0, 240, 255, 0.1);
    border-color: var(--accent-primary);
    transform: translateY(-2px);
}

.footer-brand {
    text-decoration: none;
    transition: var(--transition-normal);
}

.footer-brand:hover {
    transform: scale(1.05);
}

.footer-brand:hover .brand-logo {
    color: var(--accent-secondary);
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: var(--space-xl);
    margin-bottom: var(--space-lg);
    flex-wrap: wrap;
}

.footer-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-tertiary);
    border: var(--border-subtle);
    border-radius: 8px;
    font-size: 0.875rem;
    color: var(--text-secondary);
    transition: var(--transition-normal);
}

.footer-link:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
    transform: translateY(-2px);
}

.footer-link i {
    font-size: 0.875rem;
}

/* Nav brand as link */
a.nav-brand {
    text-decoration: none;
    transition: var(--transition-normal);
}

a.nav-brand:hover {
    transform: scale(1.05);
}

a.nav-brand:hover .brand-icon {
    box-shadow: 0 0 20px rgba(0, 240, 255, 0.5);
}

/* Conclusion Background */
.conclusion-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.bg-gradient {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(ellipse at center, rgba(139, 92, 246, 0.1) 0%, transparent 70%);
}

#conclusion-particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

/* === Responsive Design === */
@media (max-width: 1024px) {
    .equation-card.featured {
        grid-column: span 1;
    }
    
    .map-wrapper {
        height: 1200px;
        overflow-y: auto;
    }
    
    .equation-node {
        position: relative !important;
        top: auto !important;
        left: auto !important;
        transform: none !important;
        display: inline-flex;
        margin: var(--space-xs);
    }
    
    .node-container {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
        align-content: flex-start;
        padding: var(--space-lg);
        gap: var(--space-sm);
    }
}

@media (max-width: 768px) {
    :root {
        font-size: 14px;
    }
    
    .section {
        padding: var(--space-2xl) var(--space-md);
    }
    
    #main-nav {
        padding: 0 var(--space-md);
    }
    
    .nav-links {
        display: none;
    }
    
    .hero-visual {
        display: none;
    }
    
    .equation-display {
        flex-wrap: wrap;
        justify-content: center;
        padding: var(--space-md);
    }
    
    .equations-grid {
        grid-template-columns: 1fr;
    }
    
    .journey-timeline {
        padding-left: 60px;
    }
    
    .journey-timeline::before {
        left: 25px;
    }
    
    .step-marker {
        left: -60px;
    }
    
    .flow-split {
        flex-direction: column;
    }
    
    .split-connector {
        transform: rotate(90deg);
    }
    
    .cta-buttons-group {
        width: 100%;
    }
    
    .cta-button.primary-cta,
    .cta-button.secondary-cta {
        width: 100%;
        justify-content: center;
    }
    
    .footer-links {
        flex-direction: column;
        gap: var(--space-md);
    }
}

@media (max-width: 480px) {
    .hero-cta {
        flex-direction: column;
        align-items: center;
    }
    
    .cta-button {
        width: 100%;
        justify-content: center;
    }
    
    .eq-visual {
        font-size: 0.6875rem;
        padding: var(--space-sm);
    }
    
    .card-body {
        padding: var(--space-md);
    }
}

/* === Print Styles === */
@media print {
    body {
        background: white;
        color: black;
    }
    
    #particles-container,
    .grid-overlay,
    #loading-screen,
    #main-nav,
    .hero-visual,
    .scroll-indicator,
    .map-controls,
    .conclusion-bg {
        display: none !important;
    }
    
    .section {
        page-break-inside: avoid;
    }
}