:root {
    /* Color Palette */
    --bg-dark: #0a0a0f;
    --bg-card: rgba(20, 20, 25, 0.6);
    --bg-card-hover: rgba(30, 30, 40, 0.8);
    --text-main: #f0f0f5;
    --text-muted: #a0a0b0;
    --accent-1: #00f2fe;
    --accent-2: #4facfe;
    --accent-gradient: linear-gradient(135deg, var(--accent-1), var(--accent-2));
    
    /* Layout */
    --container-width: 1200px;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 8rem;
    
    /* Effects */
    --glass-border: 1px solid rgba(255, 255, 255, 0.1);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.3);
    --glass-blur: blur(12px);
    --transition: all 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
    font-family: 'Pretendard Variable', Pretendard, -apple-system, BlinkMacSystemFont, system-ui, Roboto, 'Helvetica Neue', 'Segoe UI', 'Apple SD Gothic Neo', 'Noto Sans KR', 'Malgun Gothic', 'Apple Color Emoji', 'Segoe UI Emoji', 'Segoe UI Symbol', sans-serif;
    color: var(--text-main);
    background-color: var(--bg-dark);
}

body {
    overflow-x: hidden;
    position: relative;
}

/* Background Effects */
#particleCanvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -2;
    pointer-events: none;
}

.mesh-gradient {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
    background: 
        radial-gradient(circle at 15% 50%, rgba(0, 242, 254, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 85% 30%, rgba(79, 172, 254, 0.08) 0%, transparent 50%);
    pointer-events: none;
}

/* Typography & Utilities */
.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 2rem;
}

.section-padding {
    padding: var(--spacing-xl) 0;
}

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

.section-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.section-header p {
    color: var(--text-muted);
    font-size: 1.1rem;
}

.gradient-text {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}

.glass-card {
    background: var(--bg-card);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: var(--glass-border);
    border-radius: 16px;
    box-shadow: var(--glass-shadow);
    transition: var(--transition);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.8rem 1.5rem;
    border-radius: 30px;
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    font-size: 1rem;
    gap: 0.5rem;
}

.btn-primary {
    background: var(--accent-gradient);
    color: #fff;
    box-shadow: 0 4px 15px rgba(0, 242, 254, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 242, 254, 0.4);
}

.btn-secondary {
    background: transparent;
    color: var(--text-main);
    border: 1px solid var(--accent-1);
}

.btn-secondary:hover {
    background: rgba(0, 242, 254, 0.1);
    transform: translateY(-2px);
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    padding: 1.5rem 0;
    transition: var(--transition);
}

.navbar.scrolled {
    padding: 1rem 0;
    background: rgba(10, 10, 15, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: var(--glass-border);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    text-decoration: none;
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-link {
    color: var(--text-main);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

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

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-link:hover,
.nav-link.active {
    color: var(--accent-1);
}

.hamburger {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-main);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
}

.hero-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 4rem;
}

.hero-content {
    flex: 1;
}

.hero-title {
    font-size: 3.5rem;
    line-height: 1.2;
    font-weight: 700;
    margin-bottom: 1.5rem;
}

.cursor {
    animation: blink 1s infinite;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-muted);
    margin-bottom: 2rem;
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
}

.hero-graphic {
    flex: 1;
    position: relative;
    height: 400px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.floating-element {
    position: absolute;
    padding: 1rem 1.5rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    font-weight: 600;
    animation: float 6s ease-in-out infinite;
}

.floating-element i {
    font-size: 1.5rem;
}

.el-1 { top: 10%; left: 10%; animation-delay: 0s; }
.el-2 { top: 50%; right: 10%; animation-delay: 2s; }
.el-3 { bottom: 10%; left: 20%; animation-delay: 4s; }

@keyframes float {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
    100% { transform: translateY(0px); }
}

/* About Section */
.stats-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.stat-card {
    padding: 2.5rem;
    text-align: center;
}

.stat-card:hover {
    transform: translateY(-5px);
    background: var(--bg-card-hover);
    border-color: rgba(0, 242, 254, 0.3);
}

.stat-number {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.stat-label {
    color: var(--text-muted);
    font-size: 1.1rem;
}

/* Products Section */
.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
}

.product-card {
    padding: 2rem;
    text-decoration: none;
    color: var(--text-main);
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
}

.product-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; width: 100%; height: 4px;
    background: var(--accent-gradient);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}

.product-card:hover {
    transform: translateY(-10px);
    background: var(--bg-card-hover);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.4);
}

.product-card:hover::before {
    transform: scaleX(1);
}

.product-icon {
    width: 60px;
    height: 60px;
    border-radius: 12px;
    background: rgba(0, 242, 254, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.8rem;
    color: var(--accent-1);
    margin-bottom: 1.5rem;
    transition: var(--transition);
}

.product-card:hover .product-icon {
    background: var(--accent-gradient);
    color: #fff;
}

.product-card h3 {
    font-size: 1.4rem;
    margin-bottom: 1rem;
}

.product-card p {
    color: var(--text-muted);
    margin-bottom: 1.5rem;
    line-height: 1.5;
    flex: 1;
}

.explore-link {
    color: var(--accent-1);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.95rem;
}

.product-card:hover .explore-link {
    text-decoration: underline;
}

.status-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.status-badge.warning {
    background: rgba(255, 193, 7, 0.2);
    color: #ffc107;
    border: 1px solid rgba(255, 193, 7, 0.3);
}

/* Blog Section */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 2rem;
}

.blog-card {
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.blog-card:hover {
    transform: translateY(-5px);
    border-color: rgba(0, 242, 254, 0.3);
}

.blog-image {
    height: 200px;
    width: 100%;
}

.blog-content {
    padding: 1.5rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.blog-category {
    font-size: 0.85rem;
    color: var(--accent-1);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 0.8rem;
    font-weight: 600;
}

.blog-content h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    line-height: 1.4;
}

.blog-content p {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 1.5rem;
    flex: 1;
}

.read-more {
    color: var(--text-main);
    text-decoration: none;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition);
}

.read-more:hover {
    color: var(--accent-1);
    gap: 0.8rem;
}

/* Contact Section */
.contact-content {
    display: grid;
    grid-template-columns: 3fr 2fr;
    gap: 3rem;
    padding: 3rem;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    color: var(--text-main);
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-1);
    background: rgba(0, 242, 254, 0.05);
}

.w-100 {
    width: 100%;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    justify-content: center;
}

.info-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.info-item i {
    font-size: 1.5rem;
    color: var(--accent-1);
    margin-top: 0.2rem;
}

.info-item h4 {
    margin-bottom: 0.3rem;
    font-size: 1.1rem;
}

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

/* Footer */
footer {
    border-top: var(--glass-border);
    padding: 3rem 0;
    margin-top: var(--spacing-lg);
    background: rgba(0, 0, 0, 0.3);
}

.footer-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1.5rem;
}

.footer-logo {
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

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

.social-links {
    display: flex;
    gap: 1rem;
}

.social-links a {
    color: var(--text-muted);
    font-size: 1.2rem;
    transition: var(--transition);
}

.social-links a:hover {
    color: var(--accent-1);
    transform: translateY(-3px);
}

/* Animations */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive */
@media (max-width: 992px) {
    .hero-container {
        flex-direction: column;
        text-align: center;
        padding-top: 4rem;
    }
    
    .hero-buttons {
        justify-content: center;
    }
    
    .hero-graphic {
        width: 100%;
        margin-top: 2rem;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .section-padding {
        padding: var(--spacing-lg) 0;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: rgba(10, 10, 15, 0.95);
        backdrop-filter: blur(10px);
        flex-direction: column;
        padding: 1.5rem;
        gap: 1.5rem;
        border-bottom: var(--glass-border);
    }
    
    .nav-links.active {
        display: flex;
    }
    
    .hamburger {
        display: block;
    }
}