/* CSS Variables */
:root {
    /* Colors */
    --primary: #00ff88;
    --primary-dark: #00cc6a;
    --primary-light: #4dffaa;
    --secondary: #0088ff;
    --accent: #ff6b35;
    --success: #00c851;
    --warning: #ffbb33;
    --error: #ff4444;
    
    /* Background */
    --bg-primary: #0a0a0a;
    --bg-secondary: #111111;
    --bg-tertiary: #1a1a1a;
    --bg-card: rgba(17, 17, 17, 0.8);
    --bg-glass: rgba(255, 255, 255, 0.02);
    --bg-overlay: rgba(0, 0, 0, 0.7);
    
    /* Text */
    --text-primary: #ffffff;
    --text-secondary: #b3b3b3;
    --text-muted: #666666;
    --text-accent: var(--primary);
    
    /* Borders */
    --border-primary: rgba(255, 255, 255, 0.1);
    --border-secondary: rgba(255, 255, 255, 0.05);
    --border-accent: rgba(0, 255, 136, 0.3);
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 16px 64px rgba(0, 0, 0, 0.3);
    --shadow-glow: 0 0 40px rgba(0, 255, 136, 0.3);
    --shadow-glow-accent: 0 0 60px rgba(255, 107, 53, 0.4);
    
    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    --space-2xl: 4rem;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-2xl: 32px;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    --transition-bounce: 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Pretendard', 'Nanum Square', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: 'Nanum Square', 'Pretendard', sans-serif;
    font-weight: 800;
    line-height: 1.2;
}

/* Background Effects */
.background {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
    background: radial-gradient(ellipse at center, var(--bg-secondary) 0%, var(--bg-primary) 70%);
}

.grid-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(0, 255, 136, 0.03) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0, 255, 136, 0.03) 1px, transparent 1px);
    background-size: 80px 80px;
    animation: grid-float 30s linear infinite;
}

@keyframes grid-float {
    0% { transform: translate(0, 0); }
    100% { transform: translate(80px, 80px); }
}

.floating-shapes {
    position: absolute;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.shape {
    position: absolute;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    opacity: 0.1;
    animation: float-shape 20s ease-in-out infinite;
}

.shape-1 {
    width: 300px;
    height: 300px;
    top: 10%;
    left: 5%;
    animation-delay: 0s;
}

.shape-2 {
    width: 200px;
    height: 200px;
    top: 70%;
    right: 10%;
    animation-delay: -7s;
}

.shape-3 {
    width: 150px;
    height: 150px;
    bottom: 20%;
    left: 70%;
    animation-delay: -14s;
}

.shape-4 {
    width: 100px;
    height: 100px;
    top: 40%;
    right: 30%;
    animation-delay: -10s;
}

@keyframes float-shape {
    0%, 100% { transform: translateY(0) rotate(0deg) scale(1); }
    25% { transform: translateY(-40px) rotate(90deg) scale(1.1); }
    50% { transform: translateY(-20px) rotate(180deg) scale(0.9); }
    75% { transform: translateY(-60px) rotate(270deg) scale(1.05); }
}

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

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 80px;
    background: rgba(10, 10, 10, 0.9);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-primary);
    z-index: 1000;
    transition: var(--transition-normal);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--space-lg);
}

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

.brand-icon {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 3px;
    position: relative;
    overflow: hidden;
}

.icon-inner {
    width: 100%;
    height: 100%;
    background: var(--bg-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: var(--primary);
    position: relative;
    z-index: 2;
}

.brand-icon::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 50%;
    animation: brand-pulse 3s ease-in-out infinite;
}

@keyframes brand-pulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.1); opacity: 0.8; }
}

.brand-text {
    display: flex;
    flex-direction: column;
}

.brand-name {
    font-size: 1.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-family: 'Nanum Square', sans-serif;
}

.brand-tagline {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 500;
}

.nav-menu {
    display: flex;
    gap: var(--space-sm);
}

.nav-link {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-md);
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
    border: 1px solid transparent;
}

.nav-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 255, 136, 0.1), transparent);
    transition: var(--transition-normal);
}

.nav-link:hover::before,
.nav-link.active::before {
    left: 100%;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary);
    background: var(--bg-glass);
    border-color: var(--border-accent);
}

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

.server-info {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
    font-size: 0.875rem;
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
}

.status-dot {
    font-size: 8px;
    color: var(--error);
    animation: pulse-dot 2s ease-in-out infinite;
    transition: var(--transition-normal);
}

.status-dot.online {
    color: var(--success);
}

@keyframes pulse-dot {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.7; transform: scale(1.2); }
}

.player-count {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    color: var(--text-muted);
    font-size: 0.875rem;
}

.refresh-btn {
    background: var(--bg-glass);
    border: 1px solid var(--border-primary);
    color: var(--text-secondary);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition-normal);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
}

.refresh-btn:hover {
    background: var(--bg-tertiary);
    color: var(--primary);
    border-color: var(--border-accent);
    transform: rotate(180deg);
}

.refresh-btn.loading {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.cta-button {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    border: none;
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-md);
    font-weight: 600;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    transition: var(--transition-normal);
    box-shadow: var(--shadow-glow);
    position: relative;
    overflow: hidden;
}

.cta-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: var(--transition-normal);
}

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

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 60px rgba(0, 255, 136, 0.5);
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-xs);
}

.mobile-menu-toggle span {
    width: 24px;
    height: 3px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition-normal);
}

/* Main Container */
.main-container {
    padding-top: 80px;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
    align-items: center;
}

.hero-content {
    z-index: 10;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-xs) var(--space-md);
    background: var(--bg-glass);
    border: 1px solid var(--border-accent);
    border-radius: 50px;
    color: var(--primary);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: var(--space-lg);
    backdrop-filter: blur(10px);
    position: relative;
    overflow: hidden;
}

.badge-glow {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 255, 136, 0.1), transparent);
    animation: badge-sweep 3s ease-in-out infinite;
}

@keyframes badge-sweep {
    0%, 100% { transform: translateX(-100%); }
    50% { transform: translateX(100%); }
}

.hero-title {
    font-size: clamp(3rem, 8vw, 5rem);
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: var(--space-lg);
    font-family: 'Nanum Square', sans-serif;
}

.title-line {
    display: block;
    color: var(--text-secondary);
    margin-bottom: var(--space-md);
}

.title-brand {
    display: block;
}

.gradient-text {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 0 60px rgba(0, 255, 136, 0.3);
}

.hero-description {
    font-size: 1.25rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--space-xl);
}

.hero-actions {
    display: flex;
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
    flex-wrap: wrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    border: none;
    padding: var(--space-md) var(--space-xl);
    border-radius: var(--radius-lg);
    font-weight: 700;
    font-size: 1.125rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.btn-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-dark), var(--secondary));
    opacity: 0;
    transition: var(--transition-normal);
}

.btn-primary:hover .btn-bg {
    opacity: 1;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 0 60px rgba(0, 255, 136, 0.5);
}

.btn-particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.btn-secondary {
    background: var(--bg-glass);
    color: var(--text-primary);
    border: 2px solid var(--border-primary);
    padding: var(--space-md) var(--space-xl);
    border-radius: var(--radius-lg);
    font-weight: 600;
    font-size: 1.125rem;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    transition: var(--transition-normal);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    border-color: var(--primary);
    background: rgba(0, 255, 136, 0.1);
    transform: translateY(-3px);
}

.server-address {
    display: flex;
    justify-content: flex-start;
}

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

.address-label {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: 0.875rem;
    color: var(--text-muted);
    font-weight: 500;
}

.address-box {
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    padding: var(--space-md) var(--space-lg);
    display: flex;
    align-items: center;
    gap: var(--space-md);
    backdrop-filter: blur(20px);
    transition: var(--transition-normal);
}

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

.address-icon {
    color: var(--primary);
    font-size: 1.25rem;
}

.address-text {
    font-family: 'Courier New', monospace;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
    user-select: all;
}

.copy-btn {
    background: var(--primary);
    color: white;
    border: none;
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition-fast);
}

.copy-btn:hover {
    background: var(--primary-dark);
    transform: scale(1.05);
}

.version-info {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: 0.875rem;
    color: var(--text-muted);
}

.hero-visual {
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.floating-elements {
    position: absolute;
    width: 100%;
    height: 100%;
}

.element {
    position: absolute;
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
    animation: float-element 6s ease-in-out infinite;
}

.element-1 {
    top: 10%;
    left: 10%;
    animation-delay: 0s;
}

.element-2 {
    top: 20%;
    right: 15%;
    animation-delay: -1.5s;
}

.element-3 {
    bottom: 25%;
    left: 5%;
    animation-delay: -3s;
}

.element-4 {
    bottom: 15%;
    right: 10%;
    animation-delay: -4.5s;
}

@keyframes float-element {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(180deg); }
}

.hero-graphic {
    position: relative;
    width: 400px;
    height: 400px;
    margin: 0 auto;
}

.graphic-ring {
    position: absolute;
    border: 2px solid;
    border-radius: 50%;
    animation: rotate-ring 20s linear infinite;
}

.ring-1 {
    width: 100%;
    height: 100%;
    border-color: rgba(0, 255, 136, 0.3);
    animation-duration: 20s;
}

.ring-2 {
    width: 80%;
    height: 80%;
    top: 10%;
    left: 10%;
    border-color: rgba(0, 136, 255, 0.3);
    animation-duration: 15s;
    animation-direction: reverse;
}

.ring-3 {
    width: 60%;
    height: 60%;
    top: 20%;
    left: 20%;
    border-color: rgba(255, 107, 53, 0.3);
    animation-duration: 10s;
}

@keyframes rotate-ring {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.center-orb {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 120px;
    height: 120px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-glow);
    animation: orb-pulse 3s ease-in-out infinite;
}

.orb-core {
    font-size: 3rem;
    color: white;
    animation: orb-float 4s ease-in-out infinite;
}

@keyframes orb-pulse {
    0%, 100% { box-shadow: var(--shadow-glow); }
    50% { box-shadow: 0 0 80px rgba(0, 255, 136, 0.6); }
}

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

/* Animation Classes */
.animate-fade-up {
    opacity: 0;
    transform: translateY(40px);
    animation: fade-up 1s ease-out forwards;
}

@keyframes fade-up {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Features Section */
.features-section {
    padding: var(--space-2xl) 0;
    background: var(--bg-secondary);
}

.section-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-2xl);
}

.section-title {
    font-size: 3rem;
    font-weight: 900;
    margin-bottom: var(--space-md);
    font-family: 'Nanum Square', sans-serif;
}

.title-accent {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

/* Feature Showcase */
.feature-showcase {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
    margin-bottom: var(--space-2xl);
}

.main-feature-display {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-2xl);
    padding: var(--space-2xl);
    backdrop-filter: blur(30px);
    position: relative;
    overflow: hidden;
}

.main-feature-display::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
}

/* Feature Visual */
.feature-visual {
    position: relative;
    height: 400px;
    border-radius: var(--radius-xl);
    overflow: hidden;
    background: var(--bg-primary);
    border: 2px solid var(--border-primary);
}

.visual-content {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transform: scale(0.9) translateY(20px);
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.visual-content.active {
    opacity: 1;
    visibility: visible;
    transform: scale(1) translateY(0);
    transition-delay: 0.1s;
}

.visual-icon {
    position: relative;
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: white;
    z-index: 3;
    box-shadow: 0 0 40px rgba(0, 255, 136, 0.4);
    animation: icon-float 6s ease-in-out infinite;
}

@keyframes icon-float {
    0%, 100% { 
        transform: translateY(0) rotate(0deg) scale(1); 
        box-shadow: 0 0 40px rgba(0, 255, 136, 0.4);
    }
    50% { 
        transform: translateY(-15px) rotate(5deg) scale(1.05); 
        box-shadow: 0 0 60px rgba(0, 255, 136, 0.6);
    }
}

.visual-bg {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 280px;
    height: 280px;
    background: radial-gradient(circle, rgba(0, 255, 136, 0.15) 0%, rgba(0, 255, 136, 0.05) 40%, transparent 70%);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    animation: bg-pulse 4s ease-in-out infinite;
}

@keyframes bg-pulse {
    0%, 100% { 
        transform: translate(-50%, -50%) scale(1) rotate(0deg); 
        opacity: 0.6; 
    }
    50% { 
        transform: translate(-50%, -50%) scale(1.15) rotate(180deg); 
        opacity: 0.9; 
    }
}

.visual-particles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(2px 2px at 25% 35%, rgba(0, 255, 136, 0.4), transparent),
        radial-gradient(2px 2px at 65% 75%, rgba(0, 136, 255, 0.4), transparent),
        radial-gradient(1px 1px at 85% 45%, rgba(255, 107, 53, 0.4), transparent),
        radial-gradient(1px 1px at 45% 85%, rgba(0, 255, 136, 0.4), transparent),
        radial-gradient(1px 1px at 15% 65%, rgba(156, 39, 176, 0.4), transparent);
    background-size: 120px 120px, 100px 100px, 80px 80px, 140px 140px, 90px 90px;
    animation: particles-drift 25s linear infinite;
    opacity: 0.7;
}

@keyframes particles-drift {
    0% { transform: translate(0, 0) rotate(0deg); }
    25% { transform: translate(-8px, -12px) rotate(90deg); }
    50% { transform: translate(12px, -18px) rotate(180deg); }
    75% { transform: translate(-6px, -10px) rotate(270deg); }
    100% { transform: translate(0, 0) rotate(360deg); }
}

/* Feature Details */
.feature-details {
    position: relative;
    min-height: 400px;
}

.detail-content {
    opacity: 0;
    visibility: hidden;
    transform: translateX(40px);
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
}

.detail-content.active {
    opacity: 1;
    visibility: visible;
    transform: translateX(0);
    position: relative;
    transition-delay: 0.2s;
}

.detail-content h3 {
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: var(--space-md);
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-family: 'Nanum Square', sans-serif;
    animation: title-glow 3s ease-in-out infinite;
}

@keyframes title-glow {
    0%, 100% { 
        filter: drop-shadow(0 0 8px rgba(0, 255, 136, 0.3));
    }
    50% { 
        filter: drop-shadow(0 0 16px rgba(0, 255, 136, 0.5));
    }
}

.feature-desc {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--space-xl);
    animation: fade-in-up 0.8s ease-out 0.4s both;
}

@keyframes fade-in-up {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.feature-stats {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.stat-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md);
    background: var(--bg-glass);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
    opacity: 0;
    transform: translateY(10px);
    animation: stat-item-appear 0.6s ease-out forwards;
}

.stat-item:nth-child(1) { animation-delay: 0.6s; }
.stat-item:nth-child(2) { animation-delay: 0.8s; }
.stat-item:nth-child(3) { animation-delay: 1.0s; }

@keyframes stat-item-appear {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.stat-item:hover {
    border-color: var(--border-accent);
    background: rgba(0, 255, 136, 0.08);
    transform: translateX(8px);
}

.stat-item i {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1rem;
    flex-shrink: 0;
    box-shadow: 0 4px 12px rgba(0, 255, 136, 0.3);
    transition: all 0.3s ease;
}

.stat-item:hover i {
    transform: scale(1.1) rotate(10deg);
    box-shadow: 0 6px 20px rgba(0, 255, 136, 0.5);
}

.stat-item span {
    font-weight: 600;
    color: var(--text-primary);
    transition: color 0.3s ease;
}

.stat-item:hover span {
    color: var(--primary);
}

/* Feature Navigation */
.feature-navigation {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
}

.feature-nav-btn {
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-xl);
    padding: var(--space-lg);
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    gap: var(--space-md);
    backdrop-filter: blur(20px);
}

.feature-nav-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 255, 136, 0.08), transparent);
    transition: all 0.6s ease;
}

.feature-nav-btn::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    transition: all 0.4s ease;
    transform: translateX(-50%);
}

.feature-nav-btn:hover::before {
    left: 100%;
}

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

.feature-nav-btn:hover,
.feature-nav-btn.active {
    border-color: var(--border-accent);
    background: rgba(0, 255, 136, 0.05);
    transform: translateY(-4px);
    box-shadow: 0 8px 32px rgba(0, 255, 136, 0.15);
}

.nav-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.25rem;
    flex-shrink: 0;
    transition: all 0.4s ease;
    box-shadow: 0 4px 16px rgba(0, 255, 136, 0.3);
}

.feature-nav-btn.active .nav-icon {
    animation: nav-icon-pulse 2.5s ease-in-out infinite;
    transform: scale(1.1);
    box-shadow: 0 6px 24px rgba(0, 255, 136, 0.5);
}

.feature-nav-btn:hover .nav-icon {
    transform: scale(1.05) rotate(10deg);
}

@keyframes nav-icon-pulse {
    0%, 100% { 
        transform: scale(1.1); 
        box-shadow: 0 6px 24px rgba(0, 255, 136, 0.5);
    }
    50% { 
        transform: scale(1.15); 
        box-shadow: 0 8px 32px rgba(0, 255, 136, 0.7);
    }
}

.nav-content {
    display: flex;
    flex-direction: column;
    text-align: left;
    transition: all 0.3s ease;
}

.nav-title {
    font-weight: 700;
    color: var(--text-primary);
    font-size: 1.125rem;
    font-family: 'Nanum Square', sans-serif;
    margin-bottom: 2px;
    transition: color 0.3s ease;
}

.nav-desc {
    font-size: 0.875rem;
    color: var(--text-muted);
    transition: color 0.3s ease;
}

.feature-nav-btn:hover .nav-title,
.feature-nav-btn.active .nav-title {
    color: var(--primary);
}

.feature-nav-btn:hover .nav-desc,
.feature-nav-btn.active .nav-desc {
    color: var(--text-secondary);
}

.nav-indicator {
    position: absolute;
    right: var(--space-md);
    width: 8px;
    height: 8px;
    background: var(--primary);
    border-radius: 50%;
    opacity: 0;
    transform: scale(0);
    transition: all 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.feature-nav-btn.active .nav-indicator {
    opacity: 1;
    transform: scale(1);
    animation: indicator-blink 2s ease-in-out infinite;
}

@keyframes indicator-blink {
    0%, 100% { 
        opacity: 1; 
        box-shadow: 0 0 12px rgba(0, 255, 136, 0.6);
    }
    50% { 
        opacity: 0.4; 
        box-shadow: 0 0 8px rgba(0, 255, 136, 0.3);
    }
}

/* Feature Highlights */
.feature-highlights {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-lg);
    margin-top: var(--space-2xl);
}

.highlight-item {
    text-align: center;
    padding: var(--space-xl);
    background: var(--bg-glass);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-xl);
    backdrop-filter: blur(20px);
    transition: var(--transition-normal);
}

.highlight-item:hover {
    border-color: var(--border-accent);
    transform: translateY(-5px);
}

.highlight-number {
    font-size: 2.5rem;
    font-weight: 900;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--space-sm);
    font-family: 'Nanum Square', sans-serif;
}

.highlight-text {
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Stats Section */
.stats-section {
    padding: var(--space-2xl) 0;
}

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

.stats-header {
    text-align: center;
    margin-bottom: var(--space-2xl);
}

.stats-header h2 {
    font-size: 2.5rem;
    font-weight: 900;
    margin-bottom: var(--space-md);
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-family: 'Nanum Square', sans-serif;
}

.stats-header p {
    color: var(--text-secondary);
    font-size: 1.125rem;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-lg);
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    backdrop-filter: blur(30px);
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.stat-bg {
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 255, 136, 0.1), transparent);
    transition: var(--transition-normal);
}

.stat-card:hover .stat-bg {
    left: 100%;
}

.stat-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-color: var(--border-accent);
}

.stat-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
    margin-bottom: var(--space-lg);
    box-shadow: var(--shadow-glow);
}

.stat-content {
    margin-bottom: var(--space-md);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--primary);
    text-shadow: 0 0 20px rgba(0, 255, 136, 0.5);
    margin-bottom: var(--space-xs);
    font-family: 'Nanum Square', sans-serif;
}

.stat-label {
    font-size: 1rem;
    color: var(--text-secondary);
    font-weight: 600;
}

.stat-trend {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-size: 0.875rem;
    color: var(--success);
    font-weight: 600;
}

/* Community Section */
.community-section {
    padding: var(--space-2xl) 0;
    background: var(--bg-secondary);
}

.community-grid {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: var(--space-2xl);
    align-items: center;
}

.community-content h2 {
    font-size: 2.5rem;
    font-weight: 900;
    margin-bottom: var(--space-lg);
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-family: 'Nanum Square', sans-serif;
}

.community-content p {
    color: var(--text-secondary);
    font-size: 1.125rem;
    line-height: 1.8;
    margin-bottom: var(--space-xl);
}

.community-features {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
}

.feature-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    color: var(--text-secondary);
}

.feature-item i {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1rem;
}

.discord-btn {
    background: #5865f2;
    color: white;
    border: none;
    padding: var(--space-md) var(--space-xl);
    border-radius: var(--radius-lg);
    font-weight: 600;
    font-size: 1.125rem;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    transition: var(--transition-normal);
}

.discord-btn:hover {
    background: #4752c4;
    transform: translateY(-2px);
    box-shadow: 0 8px 32px rgba(88, 101, 242, 0.3);
}

.discord-widget {
    background: var(--bg-card);
    border: 1px solid var(--border-primary);
    border-radius: var(--radius-2xl);
    padding: var(--space-xl);
    backdrop-filter: blur(30px);
    text-align: center;
}

.widget-header {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
    font-size: 1.25rem;
    font-weight: 700;
    font-family: 'Nanum Square', sans-serif;
}

.widget-header i {
    font-size: 2rem;
    color: #5865f2;
}

.widget-content {
    color: var(--text-secondary);
}

.online-indicator {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    margin-bottom: var(--space-md);
    font-weight: 600;
    color: var(--success);
}

.online-dot {
    width: 8px;
    height: 8px;
    background: var(--success);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

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

/* Footer */
.footer {
    background: var(--bg-primary);
    padding: var(--space-2xl) 0 var(--space-lg);
    border-top: 1px solid var(--border-primary);
}

.footer-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: var(--space-2xl);
    margin-bottom: var(--space-xl);
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

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

.footer-logo .brand-icon {
    width: 40px;
    height: 40px;
}

.footer-logo .icon-inner {
    font-size: 16px;
}

.footer-logo span {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
    font-family: 'Nanum Square', sans-serif;
}

.footer-desc {
    color: var(--text-secondary);
    max-width: 400px;
    line-height: 1.8;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-xl);
}

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

.link-group h4 {
    color: var(--text-primary);
    font-weight: 600;
    margin-bottom: var(--space-xs);
    font-family: 'Nanum Square', sans-serif;
}

.link-group a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.875rem;
    transition: var(--transition-fast);
}

.link-group a:hover {
    color: var(--primary);
}

.footer-bottom {
    display: flex;
    justify-content: center;
    align-items: center;
    padding-top: var(--space-lg);
    border-top: 1px solid var(--border-secondary);
    font-size: 0.875rem;
    color: var(--text-muted);
    text-align: center;
}

/* Notifications */
#notification-container {
    position: fixed;
    top: 100px;
    right: 20px;
    z-index: 10000;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.notification {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-lg);
    font-weight: 600;
    box-shadow: 0 8px 32px rgba(0, 255, 136, 0.3);
    animation: slideIn 0.3s ease-out;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-family: 'Pretendard', sans-serif;
}

.notification.slide-out {
    animation: slideOut 0.3s ease-in forwards;
}

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

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

/* Feature Visual Content Variations */
.visual-content[data-feature="pvp"] .visual-bg {
    background: radial-gradient(circle, rgba(255, 107, 53, 0.3) 0%, transparent 70%);
}

.visual-content[data-feature="economy"] .visual-bg {
    background: radial-gradient(circle, rgba(255, 193, 7, 0.3) 0%, transparent 70%);
}

.visual-content[data-feature="protection"] .visual-bg {
    background: radial-gradient(circle, rgba(0, 136, 255, 0.3) 0%, transparent 70%);
}

.visual-content[data-feature="events"] .visual-bg {
    background: radial-gradient(circle, rgba(156, 39, 176, 0.3) 0%, transparent 70%);
}

/* Animation for feature switching */
@keyframes feature-slide-in {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.detail-content.slide-in {
    animation: feature-slide-in 0.4s ease-out;
}

/* Special effects for active features */
.feature-nav-btn.active {
    box-shadow: 0 8px 32px rgba(0, 255, 136, 0.2);
}

.main-feature-display {
    transition: all var(--transition-normal);
}

.main-feature-display.updating {
    transform: scale(0.98);
}

/* Loading animation for feature switching */
.feature-visual.loading::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 255, 136, 0.1), transparent);
    animation: loading-sweep 1s ease-in-out;
}

@keyframes loading-sweep {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
        text-align: center;
    }
    
    .main-feature-display {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
        text-align: center;
    }
    
    .feature-navigation {
        grid-template-columns: 1fr;
    }
    
    .feature-highlights {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .visual-content {
        transform: scale(0.9);
    }
    
    .visual-content.active {
        transform: scale(1);
    }
    
    .community-grid {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }
    
    .nav-menu {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .hero-graphic {
        width: 300px;
        height: 300px;
    }
    
    .center-orb {
        width: 100px;
        height: 100px;
    }
    
    .orb-core {
        font-size: 2.5rem;
    }
}

@media (max-width: 768px) {
    .nav-container {
        padding: 0 var(--space-md);
    }
    
    .nav-actions .server-info {
        display: none;
    }
    
    .nav-actions .refresh-btn {
        display: none;
    }
    
    .hero {
        padding: var(--space-xl) 0;
        min-height: 80vh;
    }
    
    .hero-container {
        padding: 0 var(--space-md);
    }
    
    .section-container {
        padding: 0 var(--space-md);
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: stretch;
    }
    
    .server-address {
        justify-content: center;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }
    
    .footer-links {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }
    
    .section-title {
        font-size: 2.5rem;
    }
    
    .stats-header h2 {
        font-size: 2rem;
    }
    
    .community-content h2 {
        font-size: 2rem;
    }
    
    .feature-highlights {
        grid-template-columns: 1fr;
    }
    
    .main-feature-display {
        padding: var(--space-xl);
    }
    
    .feature-visual {
        height: 300px;
    }
    
    .visual-icon {
        width: 80px;
        height: 80px;
        font-size: 2rem;
    }
    
    .detail-content h3 {
        font-size: 1.5rem;
    }
    
    .feature-desc {
        font-size: 1rem;
    }
    
    .feature-nav-btn {
        padding: var(--space-md);
    }
    
    .nav-icon {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }
    
    .highlight-number {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .btn-primary,
    .btn-secondary {
        font-size: 1rem;
        padding: var(--space-sm) var(--space-lg);
    }
    
    .address-text {
        font-size: 1rem;
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .hero-graphic {
        width: 250px;
        height: 250px;
    }
    
    .center-orb {
        width: 80px;
        height: 80px;
    }
    
    .orb-core {
        font-size: 2rem;
    }
    
    .floating-elements .element {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }
    
    .nav-brand .brand-name {
        font-size: 1.25rem;
    }
    
    .nav-brand .brand-tagline {
        font-size: 0.65rem;
    }
    
    .notification {
        margin-right: var(--space-sm);
        max-width: calc(100vw - var(--space-lg));
    }
}

/* Mobile Menu Styles */
@media (max-width: 1024px) {
    .nav-menu.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: rgba(10, 10, 10, 0.95);
        backdrop-filter: blur(20px);
        border-top: 1px solid var(--border-primary);
        padding: var(--space-lg);
        gap: var(--space-md);
    }
    
    .mobile-menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    
    .mobile-menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .mobile-menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -6px);
    }
}

/* Touch Devices */
@media (hover: none) and (pointer: coarse) {
    .stat-card:hover,
    .feature-nav-btn:hover,
    .nav-link:hover,
    .btn-primary:hover,
    .btn-secondary:hover,
    .highlight-item:hover {
        transform: none;
    }
}

/* High Contrast Mode */
@media (prefers-contrast: high) {
    :root {
        --border-primary: rgba(255, 255, 255, 0.3);
        --border-secondary: rgba(255, 255, 255, 0.2);
        --text-secondary: #cccccc;
        --text-muted: #999999;
    }
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    
    .grid-overlay,
    .floating-shapes,
    .hero-graphic,
    .particles-canvas {
        animation: none !important;
    }
}

/* Print Styles */
@media print {
    .navbar,
    .floating-shapes,
    .particles-canvas,
    #notification-container {
        display: none;
    }
    
    .main-container {
        padding-top: 0;
    }
    
    body {
        background: white;
        color: black;
    }
    
    .hero-title,
    .section-title {
        color: black;
    }
}

/* Loading States */
.loading {
    opacity: 0.7;
    pointer-events: none;
}

.skeleton {
    background: linear-gradient(90deg, var(--bg-tertiary) 25%, var(--bg-secondary) 50%, var(--bg-tertiary) 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite;
}

@keyframes skeleton-loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

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

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

::-webkit-scrollbar-thumb {
    background: var(--primary);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--primary-light);
}

/* Selection */
::selection {
    background: rgba(0, 255, 136, 0.3);
    color: var(--text-primary);
}

::-moz-selection {
    background: rgba(0, 255, 136, 0.3);
    color: var(--text-primary);
}

/* Focus States */
button:focus,
a:focus,
.nav-link:focus {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}