:root {
    --bg-color: #050507;
    --text-color: #e0e0e0;
    --primary-color: #00f3ff;
    /* Cyan */
    --secondary-color: #bc13fe;
    /* Neon Purple */
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --font-heading: 'Orbitron', sans-serif;
    --font-body: 'Noto Sans SC', sans-serif;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

/* Canvas Background */
#particles-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: radial-gradient(circle at center, #1a1a2e 0%, #000000 100%);
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Glass Header */
.glass-header {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(5, 5, 7, 0.7);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--glass-border);
    padding: 1rem 0;
    transition: var(--transition);
}

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

.logo {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.proton-symbol {
    font-size: 1.8rem;
    animation: rotate 10s linear infinite;
    display: inline-block;
}

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

    to {
        transform: rotate(360deg);
    }
}

.en-name {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.6);
    margin-left: 0.5rem;
    font-weight: 400;
}

nav ul {
    display: flex;
    list-style: none;
    gap: 2rem;
}

nav a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    position: relative;
    padding: 0.5rem 0;
    transition: var(--transition);
}

nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    transition: var(--transition);
}

nav a:hover {
    color: var(--primary-color);
}

nav a:hover::after {
    width: 100%;
}

/* Sections */
.section {
    padding: 6rem 0;
}

.section-title {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    margin-bottom: 3rem;
    text-align: center;
    position: relative;
    display: inline-block;
    left: 50%;
    transform: translateX(-50%);
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: var(--primary-color);
    margin: 1rem auto 0;
    border-radius: 2px;
    box-shadow: 0 0 10px var(--primary-color);
}

.en-title {
    display: block;
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.4);
    font-weight: normal;
    font-family: var(--font-body);
    margin-top: 0.5rem;
    letter-spacing: 2px;
    text-transform: uppercase;
}

/* Hero Section */
.hero-section {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding-top: 80px;
    /* Offset fixed header */
}

.hero-content h1 {
    font-size: 4rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    background: linear-gradient(45deg, #fff, var(--primary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.subtitle {
    font-size: 1.5rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 3rem;
    letter-spacing: 4px;
}

.cta-button {
    display: inline-block;
    padding: 1rem 2.5rem;
    background: transparent;
    border: 1px solid var(--primary-color);
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.cta-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--primary-color);
    z-index: -1;
    transition: var(--transition);
}

.cta-button:hover {
    color: #000;
    box-shadow: 0 0 20px rgba(0, 243, 255, 0.4);
}

.cta-button:hover::before {
    left: 0;
}

/* Glass Cards */
.glass-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(10px);
    border-radius: 12px;
    padding: 2rem;
    transition: var(--transition);
}

.glass-card:hover {
    transform: translateY(-5px);
    border-color: rgba(0, 243, 255, 0.3);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5), 0 0 20px rgba(0, 243, 255, 0.1);
}

/* About Section */
.about-card {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.about-card p {
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

/* Services Section */
.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.service-card {
    text-align: center;
}

.service-card .icon {
    margin-bottom: 1.5rem;
    height: 60px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.service-card .icon svg {
    width: 48px;
    height: 48px;
    stroke: var(--primary-color);
    filter: drop-shadow(0 0 8px rgba(0, 243, 255, 0.5));
    transition: var(--transition);
}

.service-card:hover .icon svg {
    stroke: var(--secondary-color);
    filter: drop-shadow(0 0 12px rgba(188, 19, 254, 0.6));
    transform: scale(1.1);
}

.service-card h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: #fff;
}

.service-card p {
    color: var(--primary-color);
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.service-list {
    list-style: none;
    text-align: left;
    padding-left: 1rem;
    border-left: 2px solid rgba(255, 255, 255, 0.1);
}

.service-list li {
    margin-bottom: 0.5rem;
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.95rem;
}

/* Footer */
.glass-footer {
    border-top: 1px solid var(--glass-border);
    padding: 3rem 0;
    margin-top: 4rem;
    background: rgba(0, 0, 0, 0.8);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 2rem;
}

.footer-info h4 {
    color: #fff;
    margin-bottom: 0.5rem;
}

.footer-info p {
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.9rem;
}

.footer-copy {
    color: rgba(255, 255, 255, 0.3);
    font-size: 0.8rem;
}

/* Responsive */
@media (max-width: 768px) {
    .hero-content h1 {
        font-size: 2.5rem;
    }

    .nav-container {
        flex-direction: column;
        gap: 1rem;
    }

    nav ul {
        gap: 1rem;
        flex-wrap: wrap;
        justify-content: center;
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
    }
}