:root {
    --bg-dark: #0a0a0f;
    --bg-card: #13131f;
    --primary: #5c62ec;
    --primary-glow: #5c62ec80;
    --secondary: #00f0ff;
    --text-main: #ffffff;
    --text-muted: #8b9bb4;
    --gradient-main: linear-gradient(135deg, #5c62ec 0%, #00f0ff 100%);
    --font-heading: 'Unbounded', sans-serif;
    --font-body: 'Inter', sans-serif;
}

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

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

/* Background Effects */
.noise-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml,%3Csvg viewBox="0 0 200 200" xmlns="http://www.w3.org/2000/svg"%3E%3Cfilter id="noiseFilter"%3E%3CfeTurbulence type="fractalNoise" baseFrequency="0.65" numOctaves="3" stitchTiles="stitch"/%3E%3C/filter%3E%3Crect width="100%25" height="100%25" filter="url(%23noiseFilter)" opacity="0.05"/%3E%3C/svg%3E');
    pointer-events: none;
    z-index: -1;
}

.gradient-sphere {
    position: fixed;
    top: -20%;
    right: -10%;
    width: 800px;
    height: 800px;
    background: radial-gradient(circle, rgba(92, 98, 236, 0.15) 0%, rgba(0, 0, 0, 0) 70%);
    border-radius: 50%;
    pointer-events: none;
    z-index: -2;
    animation: pulse 10s infinite alternate;
}

@keyframes pulse {
    0% {
        transform: scale(1);
        opacity: 0.5;
    }

    100% {
        transform: scale(1.2);
        opacity: 0.8;
    }
}

/* Navigation */
header {
    position: absolute;
    /* Scrolls with page, not fixed */
    top: 0;
    width: 100%;
    padding: 20px 0;
    background: transparent;
    /* Cleaner look */
    z-index: 1000;
}

.infinity-symbol {
    font-size: 32px;
    color: var(--secondary);
    line-height: 1;
    display: inline-block;
    vertical-align: middle;
    font-weight: 400;
    /* Standard weight for symbol */
}

nav {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
}

.logo {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.5rem;
    letter-spacing: 2px;
    background: var(--gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-links {
    display: flex;
    gap: 30px;
    align-items: center;
}

.lang-switch {
    margin-left: 10px;
    display: flex;
    gap: 8px;
    color: var(--text-muted);
    font-size: 0.9rem;
    align-items: center;
}

.lang-btn {
    cursor: pointer;
    font-weight: 700;
    transition: color 0.3s;
    user-select: none;
}

.lang-btn:hover,
.lang-btn.active {
    color: var(--secondary);
}

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: var(--text-main);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    position: relative;
    padding-top: 80px;
}

.hero-content {
    flex: 1;
    z-index: 1;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(255, 255, 255, 0.05);
    padding: 6px 16px;
    border-radius: 30px;
    font-size: 0.9rem;
    color: var(--secondary);
    border: 1px solid rgba(0, 240, 255, 0.2);
    margin-bottom: 20px;
    font-weight: 500;
}

h1 {
    font-family: var(--font-heading);
    font-size: 4.5rem;
    line-height: 1.1;
    margin-bottom: 20px;
    font-weight: 700;
}

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

.hero p {
    color: var(--text-muted);
    font-size: 1.2rem;
    max-width: 500px;
    margin-bottom: 30px;
}

.btn-primary {
    display: inline-block;
    background: var(--primary);
    color: white;
    text-decoration: none;
    padding: 14px 32px;
    border-radius: 30px;
    font-weight: 700;
    box-shadow: 0 0 20px var(--primary-glow);
    transition: transform 0.3s, box-shadow 0.3s;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 30px var(--primary-glow);
}

.hero-visual {
    flex: 1;
    display: flex;
    justify-content: center;
    position: relative;
}

.planet {
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: linear-gradient(135deg, #1a1a2e, #16213e);
    box-shadow: inset -20px -20px 40px rgba(0, 0, 0, 0.5), 0 0 50px rgba(92, 98, 236, 0.2);
    position: relative;
}

.satellite {
    width: 40px;
    height: 40px;
    background: var(--secondary);
    border-radius: 50%;
    position: absolute;
    top: 50%;
    left: 50%;
    box-shadow: 0 0 20px var(--secondary);
    animation: orbit 8s linear infinite;
}

@keyframes orbit {
    from {
        transform: rotate(0deg) translateX(200px) rotate(0deg);
    }

    to {
        transform: rotate(360deg) translateX(200px) rotate(-360deg);
    }
}

/* About Section */
.about {
    max-width: 1200px;
    margin: 100px auto;
    padding: 20px;
}

.section-title {
    text-align: center;
    font-family: var(--font-heading);
    font-size: 2.5rem;
    margin-bottom: 60px;
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.about-card {
    background: var(--bg-card);
    padding: 40px;
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: transform 0.3s;
}

.about-card:hover {
    transform: translateY(-5px);
    border-color: rgba(92, 98, 236, 0.3);
}

.about-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: var(--text-main);
    font-family: var(--font-heading);
}

.about-card p {
    color: var(--text-muted);
}

/* Projects Section */
.projects {
    max-width: 1200px;
    margin: 100px auto;
    padding: 20px;
    padding-bottom: 150px;
    /* Space for footer */
}

.project-showcase {
    display: flex;
    flex-direction: column;
    gap: 60px;
}

.project-card {
    display: flex;
    background: var(--bg-card);
    border-radius: 30px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.project-image {
    flex: 1.2;
    background: #2a2a3e;
    min-height: 400px;
    position: relative;
    display: flex;
    align-items: flex-end;
    padding: 30px;
}

.minilang-bg {
    background: linear-gradient(to bottom, transparent, rgba(0, 0, 0, 0.8)), url('robot_preview.png');
    background-size: cover;
    background-position: center center;
}

.placeholder-bg {
    background: repeating-linear-gradient(45deg, #1a1a24, #1a1a24 10px, #13131f 10px, #13131f 20px);
    align-items: center;
    justify-content: center;
}

.project-overlay {
    display: flex;
    gap: 10px;
}

.tech-tag {
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(5px);
    padding: 6px 12px;
    border-radius: 8px;
    font-size: 0.8rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.project-info {
    flex: 1;
    padding: 50px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.project-info h3 {
    font-size: 2.5rem;
    font-family: var(--font-heading);
    margin-bottom: 20px;
}

.project-desc {
    color: var(--text-muted);
    margin-bottom: 30px;
    font-size: 1.1rem;
}

.project-stats {
    list-style: none;
    display: flex;
    gap: 30px;
    margin-bottom: 40px;
    padding-bottom: 30px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.project-stats li {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.project-stats span:first-child {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--secondary);
    font-family: var(--font-heading);
}

.project-stats span:last-child {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.infinity-icon {
    width: 32px;
    height: 32px;
    color: var(--secondary);
}

.btn-text {
    color: var(--text-main);
    text-decoration: none;
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    gap: 10px;
}

.btn-text:hover {
    color: var(--primary);
}

.upcoming {
    opacity: 0.7;
}

.lock-icon {
    font-size: 3rem;
    opacity: 0.3;
}

/* Footer & Contacts */
footer {
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding: 60px 20px 20px;
    max-width: 1200px;
    margin: 0 auto;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 40px;
}

.footer-brand h4 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    margin-bottom: 5px;
}

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

.footer-legal {
    margin-top: 20px;
    display: flex;
    gap: 20px;
}

.footer-legal a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.3s;
}

.footer-legal a:hover {
    color: var(--text-main);
}

.footer-contacts {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 15px;
}

.contact-link {
    color: var(--text-main);
    text-decoration: none;
    font-weight: 500;
    font-size: 1.1rem;
    transition: color 0.3s;
}

.contact-link:hover {
    color: var(--secondary);
}

.social-links {
    margin-top: 10px;
}

.social-icon {
    color: var(--text-muted);
    transition: all 0.3s;
    display: inline-block;
}

.social-icon:hover {
    color: white;
    transform: scale(1.1);
}

.copyright {
    text-align: center;
    font-size: 0.8rem;
    color: #4a4a5e;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 20px;
}

/* Responsive */
@media (max-width: 768px) {

    /* Navigation */
    nav {
        flex-direction: column;
        gap: 20px;
        padding: 15px;
    }

    .nav-links {
        width: 100%;
        justify-content: center;
        gap: 20px;
        flex-wrap: wrap;
    }

    .logo {
        font-size: 1.8rem;
    }

    /* Hero */
    .hero {
        flex-direction: column;
        /* Content first, then visual */
        text-align: center;
        padding-top: 140px;
        /* More space for stacked nav */
        padding-bottom: 60px;
        min-height: auto;
        /* Allow natural height */
    }

    .hero-content {
        order: 1;
        /* Ensure text is first */
    }

    .hero-visual {
        order: 2;
        margin-top: 40px;
        transform: scale(0.8);
        /* Shrink planet slightly */
    }

    h1 {
        font-size: 2.8rem;
        /* Smaller for mobile */
    }

    .hero p {
        font-size: 1rem;
        margin: 0 auto 30px;
    }

    .hero-actions {
        justify-content: center;
        display: flex;
    }

    /* Projects */
    .project-card {
        flex-direction: column;
    }

    .project-image {
        min-height: 250px;
    }

    .project-info {
        padding: 30px;
        /* Reduce padding on mobile */
    }

    .project-info h3 {
        font-size: 2rem;
    }

    /* Footer */
    .footer-content {
        flex-direction: column;
        gap: 40px;
        text-align: center;
        align-items: center;
    }

    .footer-contacts {
        align-items: center;
        /* Center contacts */
    }

    .footer-legal {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 2.2rem;
    }

    .nav-links {
        gap: 15px;
        font-size: 0.9rem;
    }

    .btn-contact {
        padding: 6px 16px;
    }
}