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

body {
    background-color: #000000;
    color: #ffffff;
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 20px;
}

.navbar {
    background-color: #111111;
    padding: 20px 0;
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    transition: all 0.3s;
}

.navbar.scrolled {
    padding: 10px 0;
    background-color: rgba(17, 17, 17, 0.9);
    box-shadow: 0 2px 10px rgba(76, 175, 80, 0.3);
}

.navbar nav {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.navbar nav ul {
    display: flex;
    list-style: none;
    gap: 150px;
}

.navbar nav ul li a {
    color: #a0a0a0;
    text-decoration: none;
    font-size: 20px;
}

.hero-section {
    padding-top: 150px;
}

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

.hero-content h1 {
    font-size: 3.5rem;
    margin-bottom: 20px;
}

.hero-content p {
    color: #a0a0a0;
    margin-bottom: 30px;
    max-width: 450px;
}

.btn-primary {
    background-color: #4CAF50;
    color: white;
    padding: 15px 30px;
    text-decoration: none;
    border-radius: 8px;
    font-weight: bold;
    display: inline-block;
}

.hero-image .circle-img {
    width: 350px;
    height: 350px;
    border-radius: 50%;
    overflow: hidden;
    background: #333;
}

.hero-image .circle-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.logo-item {
    flex: 1;
    height: 60px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo-item img {
    max-width: 60%;
    filter: grayscale(100%);
    opacity: 0.7;
}

html {
    scroll-behavior: smooth;
}

.about-section {
    padding: 100px 0;
    background-color: #0a0a0a;
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 50px;
    color: #4CAF50;
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
}

.about-card {
    background: #1a1a1a;
    padding: 30px;
    border-radius: 12px;
    border: 1px solid #333;
    transition: 0.3s;
}

.about-card:hover {
    border-color: #4CAF50;
    transform: translateY(-5px);
}

.about-card h3 {
    margin-bottom: 15px;
    color: #fff;
    display: flex;
    align-items: center;
    gap: 10px;
}

.about-card h3 i {
    color: #4CAF50;
    font-size: 1.2rem;
}

.about-card p,
.about-card ul {
    color: #a0a0a0;
    font-size: 0.95rem;
}

.about-card ul {
    list-style: none;
    padding-left: 0;
}

.about-card ul li {
    margin-bottom: 8px;
    position: relative;
    padding-left: 15px;
}

.about-card ul li::before {
    content: "•";
    color: #4CAF50;
    position: absolute;
    left: 0;
}

.contact-section {
    padding: 100px 0;
    background-color: #000000;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.contact-item {
    background: #111111;
    padding: 25px;
    border-radius: 15px;
    display: flex;
    align-items: center;
    gap: 20px;
    transition: 0.3s ease;
    border: 1px solid #222;
}

.contact-item:hover {
    border-color: #4CAF50;
    transform: translateY(-5px);
    background: #161616;
}

.icon-box {
    width: 60px;
    height: 60px;
    background: rgba(76, 175, 80, 0.1);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    color: #4CAF50;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.contact-info h3 {
    font-size: 1.1rem;
    color: #fff;
    margin-bottom: 5px;
}

.contact-info p,
.contact-info a {
    color: #a0a0a0;
    text-decoration: none;
    font-size: 0.9rem;
    transition: 0.2s;
}

.contact-info a:hover {
    color: #4CAF50;
}

.labs {
    padding: 100px 0;
    background-color: #050505;
}

.lab-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 25px;
    margin-top: 40px;
}

.lab-card {
    background: #111;
    padding: 30px;
    border-radius: 15px;
    border: 1px solid #222;
    transition: all 0.3s ease;
}

.lab-card h3 {
    color: #4CAF50;
    font-size: 1.25rem;
    margin-bottom: 25px;
    font-weight: 600;
    letter-spacing: 0.5px;
}

.lab-links-list {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.item-link {
    background: rgba(255, 255, 255, 0.05);
    color: #a0a0a0;
    padding: 10px 18px;
    border-radius: 8px;
    text-decoration: none;
    font-size: 0.85rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: 0.2s;
}

.item-link:hover {
    background: #4CAF50;
    color: #fff;
    border-color: #4CAF50;
    transform: scale(1.05);
}

.lab-card:hover {
    border-color: #4CAF50;
    transform: translateY(-8px);
}

section {
    scroll-margin-top: 80px;
}

@media (max-width: 1024px) {
    .navbar nav ul {
        gap: 50px;
    }
    .hero-section .container {
        gap: 40px;
    }
    .hero-content h1 {
        font-size: 2.8rem;
    }
}

@media (max-width: 768px) {
    .navbar {
        padding: 15px 0;
    }
    .navbar nav ul {
        gap: 20px;
    }
    .navbar nav ul li a {
        font-size: 16px;
    }
    .hero-section {
        padding: 60px 0;
    }
    .hero-section .container {
        flex-direction: column-reverse;
        text-align: center;
    }
    .hero-content {
        display: flex;
        flex-direction: column;
        align-items: center;
    }
    .hero-content p {
        max-width: 100%;
    }
    .hero-image .circle-img {
        width: 280px;
        height: 280px;
        margin-bottom: 20px;
    }
    .about-grid {
        grid-template-columns: 1fr;
    }
    .section-title {
        font-size: 2rem;
    }
    .lab-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .navbar nav ul {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 10px;
        text-align: center;
    }
    .hero-content h1 {
        font-size: 2rem;
    }
    .hero-image .circle-img {
        width: 220px;
        height: 220px;
    }
    .contact-item {
        flex-direction: column;
        text-align: center;
    }
}