/* CSS Variables for Theme System */
:root {
    /* Light Mode Colors */
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-tertiary: #e9ecef;
    --text-primary: #1a1a1a;
    --text-secondary: #6c757d;
    --text-muted: #adb5bd;
    
    /* Naruto-inspired Colors */
    --naruto-orange: #ff6b35;
    --naruto-blue: #0056b3;
    --naruto-yellow: #ffc107;
    --shadow-primary: rgba(0, 0, 0, 0.1);
    --shadow-secondary: rgba(0, 0, 0, 0.05);
    
    /* Accent Colors */
    --accent-primary: var(--naruto-orange);
    --accent-secondary: var(--naruto-blue);
    --accent-tertiary: var(--naruto-yellow);
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
    --spacing-xxl: 6rem;
    
    /* Typography */
    --font-primary: 'Nunito', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-fun: 'Comic Neue', 'Comic Sans MS', cursive, sans-serif;
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-extrabold: 800;
    
    /* Transitions */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: all 0.3s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    
    /* Border Radius */
    --radius-sm: 0.5rem;
    --radius-md: 1rem;
    --radius-lg: 1.5rem;
    --radius-xl: 2rem;
    --radius-full: 9999px;
    
    /* Z-Index */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal: 1040;
    --z-popover: 1050;
    --z-tooltip: 1060;
}

/* Dark Mode */
body.dark-mode {
    --bg-primary: #1a1a1a;
    --bg-secondary: #2d2d2d;
    --bg-tertiary: #404040;
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
    --text-muted: #808080;
    --shadow-primary: rgba(255, 255, 255, 0.1);
    --shadow-secondary: rgba(255, 255, 255, 0.05);
    
    --naruto-orange: #ff8a65;
    --naruto-blue: #42a5f5;
    --naruto-yellow: #ffeb3b;
}

/* Fun Mode */
body.fun-mode {
    --font-primary: var(--font-fun);
    --transition: var(--transition-bounce);
    --naruto-orange: #ff4d6d;
    --naruto-blue: #4ecdc4;
    --naruto-yellow: #ffe66d;
}

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

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    font-family: var(--font-primary);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: var(--transition);
    overflow-x: hidden;
}

body.loaded {
    visibility: visible;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(var(--bg-primary), 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--bg-tertiary);
    z-index: var(--z-sticky);
    transition: var(--transition);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-sm) var(--spacing-md);
    max-width: 1200px;
    margin: 0 auto;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 1.5rem;
    font-weight: var(--font-weight-extrabold);
    text-decoration: none;
    color: var(--text-primary);
}

.logo-char {
    font-size: 2rem;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    transform: rotate(-5deg);
    transition: var(--transition);
}

body.fun-mode .logo-char {
    animation: logoWiggle 2s ease-in-out infinite;
}

@keyframes logoWiggle {
    0%, 100% { transform: rotate(-5deg) scale(1); }
    25% { transform: rotate(5deg) scale(1.1); }
    75% { transform: rotate(-10deg) scale(0.9); }
}

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

.nav-link {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: var(--font-weight-semibold);
    transition: var(--transition);
    position: relative;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
}

.nav-link:hover {
    color: var(--accent-primary);
    background: var(--bg-secondary);
    transform: translateY(-2px);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--accent-primary);
    transition: var(--transition);
    transform: translateX(-50%);
}

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

.nav-toggles {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.theme-toggle,
.mode-toggle {
    background: var(--bg-secondary);
    border: 2px solid var(--bg-tertiary);
    border-radius: var(--radius-full);
    padding: var(--spacing-xs) var(--spacing-sm);
    cursor: pointer;
    transition: var(--transition);
    color: var(--text-primary);
    font-size: 0.9rem;
    font-weight: var(--font-weight-semibold);
}

.theme-toggle:hover,
.mode-toggle:hover {
    background: var(--accent-primary);
    color: white;
    transform: scale(1.05);
}

body.fun-mode .theme-toggle:hover,
body.fun-mode .mode-toggle:hover {
    transform: scale(1.1) rotate(10deg);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
    padding: var(--spacing-xs);
}

.hamburger {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    position: relative;
    transition: var(--transition);
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition);
}

.hamburger::before {
    top: -8px;
}

.hamburger::after {
    bottom: -8px;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    opacity: 0.1;
    overflow: hidden;
}

.running-ninjas {
    position: relative;
    width: 100%;
    height: 100%;
}

.ninja {
    position: absolute;
    font-size: 3rem;
    animation: runAcross 8s linear infinite;
    display: flex;
    align-items: center;
    gap: 15px;
}

.ninja-char {
    color: var(--accent-primary);
    font-weight: bold;
    opacity: 0.8;
}

.ninja-stream {
    display: flex;
    align-items: center;
    gap: 3px;
}

.ninja-stream span {
    opacity: 0.6;
    animation: streamParticle 1s ease-in-out infinite;
}

.ninja-stream span:nth-child(1) {
    font-size: 0.6em;
    animation-delay: 0.2s;
}

.ninja-stream span:nth-child(2) {
    font-size: 0.8em;
    animation-delay: 0.1s;
}

.ninja-stream span:nth-child(3) {
    font-size: 1em;
    animation-delay: 0s;
}

.ninja-1 {
    top: 20%;
    animation-delay: 0s;
}

.ninja-2 {
    top: 50%;
    animation-delay: -2s;
}

.ninja-3 {
    top: 80%;
    animation-delay: -4s;
}

@keyframes runAcross {
    0% {
        left: -100px;
        transform: scaleX(1);
    }
    100% {
        left: 100%;
        transform: scaleX(1);
    }
}

.hero-content {
    text-align: center;
    z-index: 1;
    position: relative;
}

.hero-logo {
    position: relative;
    margin-bottom: var(--spacing-lg);
}

.main-char {
    font-size: clamp(6rem, 15vw, 12rem);
    font-weight: var(--font-weight-extrabold);
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary), var(--accent-tertiary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: pulse 3s ease-in-out infinite;
    position: relative;
    z-index: 1;
}

body.fun-mode .main-char {
    animation: pulse 1s ease-in-out infinite, rainbow 2s linear infinite;
}

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

@keyframes rainbow {
    0% { filter: hue-rotate(0deg); }
    100% { filter: hue-rotate(360deg); }
}

.char-effects {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 100%;
    height: 100%;
    transform: translate(-50%, -50%);
    pointer-events: none;
}

.hero-title {
    margin-bottom: var(--spacing-md);
}

.title-main {
    display: block;
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: var(--font-weight-extrabold);
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.title-sub {
    display: block;
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: var(--font-weight-semibold);
    color: var(--text-secondary);
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    text-decoration: none;
    font-weight: var(--font-weight-semibold);
    transition: var(--transition);
    cursor: pointer;
    border: none;
    font-size: 1rem;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: var(--transition);
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    color: white;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
}

.btn-secondary {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 2px solid var(--bg-tertiary);
}

.btn-secondary:hover {
    background: var(--accent-primary);
    color: white;
    border-color: var(--accent-primary);
    transform: translateY(-3px);
}

body.fun-mode .btn:hover {
    transform: translateY(-3px) rotate(2deg);
}

.btn-icon {
    font-size: 1.2rem;
}

.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-sm);
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
}

.scroll-indicator:hover {
    color: var(--accent-primary);
    transform: translateX(-50%) scale(1.1);
}

.scroll-text {
    display: block;
    font-size: 0.9rem;
    margin-bottom: var(--spacing-xs);
}

.scroll-arrow {
    font-size: 1.5rem;
    animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

/* Section Styles */
section {
    padding: var(--spacing-xxl) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.section-header h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: var(--font-weight-extrabold);
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    position: relative;
}

body.fun-mode .section-header h2 {
    animation: colorCycle 3s ease-in-out infinite;
}

@keyframes colorCycle {
    0%, 100% { color: var(--accent-primary); }
    33% { color: var(--accent-secondary); }
    66% { color: var(--accent-tertiary); }
}

.section-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* About Section */
.about {
    background: var(--bg-secondary);
}

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

.about-card {
    background: var(--bg-primary);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: var(--transition);
    border: 1px solid var(--bg-tertiary);
    position: relative;
    overflow: hidden;
}

.about-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: var(--transition-slow);
}

.about-card:hover::before {
    left: 100%;
}

.about-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 30px var(--shadow-primary);
}

.about-card.featured {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    color: white;
}

body.fun-mode .about-card:hover {
    transform: translateY(-10px) rotate(2deg);
}

.card-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
    display: block;
}

.about-card h3 {
    font-size: 1.5rem;
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-sm);
}

.about-card p {
    color: var(--text-secondary);
    line-height: 1.6;
}

.about-card.featured p {
    color: rgba(255, 255, 255, 0.9);
}

.running-demo {
    text-align: center;
    background: var(--bg-primary);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: 2px dashed var(--accent-primary);
}

.running-demo h3 {
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.demo-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1.1rem;
    font-weight: var(--font-weight-semibold);
    cursor: pointer;
    transition: var(--transition);
}

.demo-btn:hover {
    transform: scale(1.05);
}

.demo-character {
    font-size: 2rem;
    animation: runInPlace 1s ease-in-out infinite;
}

@keyframes runInPlace {
    0%, 100% { transform: translateX(0); }
    50% { transform: translateX(5px); }
}

.demo-btn.running .demo-character {
    animation: runFast 0.3s ease-in-out infinite;
}

@keyframes runFast {
    0%, 100% { transform: translateX(0) scaleX(1); }
    50% { transform: translateX(10px) scaleX(1.2); }
}

/* Gallery Section */
.gallery {
    background: var(--bg-primary);
}

.gallery-filter {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.filter-btn {
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 2px solid var(--bg-tertiary);
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: var(--transition);
    font-weight: var(--font-weight-semibold);
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--accent-primary);
    color: white;
    border-color: var(--accent-primary);
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.gallery-item {
    transition: var(--transition);
}

.gallery-item.hidden {
    opacity: 0;
    transform: scale(0.8);
}

.meme-card {
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    overflow: hidden;
    position: relative;
    aspect-ratio: 1;
    cursor: pointer;
    transition: var(--transition);
}

.meme-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px var(--shadow-primary);
}

.meme-placeholder {
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--bg-tertiary), var(--bg-secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.meme-text {
    text-align: center;
    padding: var(--spacing-md);
}

.meme-top,
.meme-bottom {
    display: block;
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    text-transform: uppercase;
    font-size: 1.1rem;
    line-height: 1.2;
    text-shadow: 1px 1px 2px var(--shadow-primary);
}

.meme-top {
    margin-bottom: var(--spacing-sm);
}

.meme-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

.meme-card:hover .meme-overlay {
    opacity: 1;
}

.meme-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--accent-primary);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-weight: var(--font-weight-semibold);
    cursor: pointer;
    transition: var(--transition);
}

.meme-btn:hover {
    background: var(--accent-secondary);
    transform: scale(1.05);
}

/* Culture Section */
.culture {
    background: var(--bg-secondary);
}

.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 4px;
    background: var(--accent-primary);
    transform: translateX(-50%);
}

.timeline-item {
    position: relative;
    margin-bottom: var(--spacing-xl);
    width: 50%;
    padding: var(--spacing-md);
}

.timeline-item:nth-child(odd) {
    left: 0;
    text-align: right;
    padding-right: var(--spacing-xl);
}

.timeline-item:nth-child(even) {
    left: 50%;
    text-align: left;
    padding-left: var(--spacing-xl);
}

.timeline-date {
    position: absolute;
    top: 50%;
    width: 80px;
    height: 80px;
    background: var(--accent-primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: var(--font-weight-bold);
    font-size: 1.1rem;
    transform: translateY(-50%);
    border: 4px solid var(--bg-primary);
    z-index: 1;
}

.timeline-item:nth-child(odd) .timeline-date {
    right: -40px;
}

.timeline-item:nth-child(even) .timeline-date {
    left: -40px;
}

.timeline-content {
    background: var(--bg-primary);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    box-shadow: 0 4px 15px var(--shadow-primary);
    transition: var(--transition);
}

.timeline-content:hover {
    transform: scale(1.02);
    box-shadow: 0 8px 25px var(--shadow-primary);
}

.timeline-content h3 {
    color: var(--accent-primary);
    margin-bottom: var(--spacing-xs);
    font-weight: var(--font-weight-bold);
}

.timeline-content p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Interactive Section */
.interactive {
    background: var(--bg-primary);
}

.interactive-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.interaction-card {
    background: var(--bg-secondary);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: var(--transition);
    border: 1px solid var(--bg-tertiary);
}

.interaction-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px var(--shadow-primary);
}

.interaction-card h3 {
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.interaction-card p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.interaction-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-weight: var(--font-weight-semibold);
    cursor: pointer;
    transition: var(--transition);
}

.interaction-btn:hover {
    transform: scale(1.05);
}

.btn-emoji {
    font-size: 1.2rem;
}

/* Connect Section */
.connect {
    background: var(--bg-secondary);
}

.connect-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
}

.social-card {
    background: var(--bg-primary);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: var(--transition);
    border: 1px solid var(--bg-tertiary);
}

.social-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px var(--shadow-primary);
}

.social-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-sm);
}

.social-card h3 {
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.social-card p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.social-link {
    display: inline-block;
    color: var(--accent-primary);
    text-decoration: none;
    font-weight: var(--font-weight-semibold);
    transition: var(--transition);
}

.social-link:hover {
    color: var(--accent-secondary);
    transform: scale(1.05);
}

.newsletter {
    background: var(--bg-primary);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    text-align: center;
    border: 2px solid var(--accent-primary);
}

.newsletter h3 {
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.newsletter p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.newsletter-form {
    display: flex;
    gap: var(--spacing-sm);
    max-width: 400px;
    margin: 0 auto;
}

.newsletter-form input {
    flex: 1;
    padding: var(--spacing-sm);
    border: 2px solid var(--bg-tertiary);
    border-radius: var(--radius-md);
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-family: var(--font-primary);
    transition: var(--transition);
}

.newsletter-form input:focus {
    outline: none;
    border-color: var(--accent-primary);
}

.newsletter-form button {
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--accent-primary);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-weight: var(--font-weight-semibold);
    cursor: pointer;
    transition: var(--transition);
}

.newsletter-form button:hover {
    background: var(--accent-secondary);
}

/* Footer */
.footer {
    background: var(--bg-primary);
    border-top: 1px solid var(--bg-tertiary);
    padding: var(--spacing-lg) 0;
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
    text-align: center;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 1.5rem;
    font-weight: var(--font-weight-extrabold);
}

.footer-logo .logo-char {
    font-size: 2rem;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-links {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--accent-primary);
}

.footer-info {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.footer-info p {
    margin-bottom: var(--spacing-xs);
}

/* Floating Runner */
.floating-runner {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: var(--z-tooltip);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
}

.floating-runner:hover {
    transform: scale(1.2);
}

.floating-runner:hover .runner-stream {
    opacity: 1;
    animation: streamFlow 0.5s ease-in-out infinite;
}

.runner-char {
    font-size: 3rem;
    animation: float 3s ease-in-out infinite;
    color: var(--accent-primary);
    font-weight: bold;
    text-shadow: 2px 2px 4px rgba(255, 107, 53, 0.3);
}

.runner-stream {
    display: flex;
    align-items: center;
    gap: 3px;
    transition: var(--transition);
}

.runner-stream span {
    opacity: 0.6;
    animation: streamPulse 2s ease-in-out infinite;
}

.stream-cloud-1 {
    font-size: 0.9rem;
    animation-delay: 0.2s;
}

.stream-cloud-2 {
    font-size: 1.2rem;
    animation-delay: 0.1s;
}

.stream-cloud-3 {
    font-size: 1.5rem;
    animation-delay: 0s;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

body.fun-mode .runner-char {
    animation: float 1s ease-in-out infinite, spin 2s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

@keyframes streamAcross {
    0% { 
        left: -150px; 
        transform: scaleX(1); 
    }
    100% { 
        left: 100vw; 
        transform: scaleX(1); 
    }
}

@keyframes streamParticle {
    0% { 
        opacity: 1; 
        transform: scale(1); 
    }
    50% { 
        opacity: 0.5; 
        transform: scale(1.2); 
    }
    100% { 
        opacity: 0.2; 
        transform: scale(0.8); 
    }
}

@keyframes streamPulse {
    0%, 100% { 
        opacity: 0.6; 
        transform: scale(1); 
    }
    50% { 
        opacity: 0.9; 
        transform: scale(1.1); 
    }
}

@keyframes streamFlow {
    0% { 
        transform: translateX(0); 
    }
    50% { 
        transform: translateX(-5px); 
    }
    100% { 
        transform: translateX(0); 
    }
}

/* Streaming プ Character Styles */
.streaming-pu, .streaming-pu-demo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.pu-char {
    font-weight: bold;
    color: var(--accent-primary);
    text-shadow: 2px 2px 4px rgba(255, 107, 53, 0.3);
    animation: pulse 1s ease-in-out infinite;
}

.stream-trail, .demo-stream-trail {
    display: flex;
    align-items: center;
    gap: 5px;
}

.demo-stream-trail span {
    animation: streamParticle 1s ease-in-out infinite;
}

.demo-stream-trail span:nth-child(1) {
    animation-delay: 0s;
}

.demo-stream-trail span:nth-child(2) {
    animation-delay: 0.1s;
}

.demo-stream-trail span:nth-child(3) {
    animation-delay: 0.2s;
}

.stream-particle {
    animation: streamParticle 1s ease-in-out infinite;
    font-size: 0.8em;
}

.stream-particle:nth-child(1) { animation-delay: 0s; }
.stream-particle:nth-child(2) { animation-delay: 0.2s; }
.stream-particle:nth-child(3) { animation-delay: 0.4s; }

/* Cloud size variations for trailing effect */
.stream-particle-1 {
    font-size: 0.6em;
    animation-delay: 0.2s;
}

.stream-particle-2 {
    font-size: 0.8em;
    animation-delay: 0.1s;
}

.stream-particle-3 {
    font-size: 1em;
    animation-delay: 0s;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .nav-links.active {
        display: flex;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg-primary);
        flex-direction: column;
        padding: var(--spacing-md);
        border-top: 1px solid var(--bg-tertiary);
        box-shadow: 0 4px 15px var(--shadow-primary);
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 300px;
    }
    
    .about-grid {
        grid-template-columns: 1fr;
    }
    
    .gallery-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    }
    
    .timeline::before {
        left: 30px;
    }
    
    .timeline-item {
        width: 100%;
        left: 0 !important;
        text-align: left !important;
        padding-left: 80px !important;
        padding-right: var(--spacing-md) !important;
    }
    
    .timeline-item .timeline-date {
        left: 0 !important;
        right: auto !important;
    }
    
    .connect-grid {
        grid-template-columns: 1fr;
    }
    
    .newsletter-form {
        flex-direction: column;
    }
    
    .footer-content {
        gap: var(--spacing-sm);
    }
    
    .footer-links {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .nav-container {
        padding: var(--spacing-sm);
    }
    
    .hero-content {
        padding: 0 var(--spacing-sm);
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
    
    .gallery-grid {
        grid-template-columns: 1fr;
    }
    
    .floating-runner {
        bottom: 15px;
        right: 15px;
    }
    
    .runner-char {
        font-size: 2.5rem;
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Print Styles */
@media print {
    .navbar,
    .floating-runner,
    .scroll-indicator {
        display: none !important;
    }
    
    body {
        background: white !important;
        color: black !important;
    }
    
    .hero {
        min-height: auto;
        padding: 2rem 0;
    }
    
    section {
        padding: 1rem 0;
    }
}