body {
    font-family: 'Helvetica Neue', Arial, sans-serif;
    background-color: #cccccc;
    margin: 0;
    padding: 0;
    font-weight: 300;
}

/* ============================================================================ */
/* Banner styling START */
.main-banner {
    background: linear-gradient(rgba(0,0,0,0.7), rgba(0,0,0,0.7)), url('../photo/NCU.jpg');
    background-size: cover;
    background-position: center;
    height: 100vh;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.main-banner .container {
    position: relative;
    z-index: 2;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

.banner-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem; 
    align-items: center;
    color: #fff;
    min-height: 70vh;
    padding: 0 2rem; 
}

.banner-left {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: 2rem;
    padding-right: 1rem;
    padding-left: 2rem;
}

.title-section {
    margin-bottom: 1rem;
}

.banner-left h1 {
    font-size: 5rem;
    font-weight: 100;
    letter-spacing: 4px;
    margin-bottom: 0.5rem;
    text-shadow: 2px 2px 8px rgba(0,0,0,0.5);
    line-height: 0.9;
    display: flex;
    align-items: center;
}

.home-logo {
    height: 0.8em;
    width: auto;
    margin-right: 20px;
    filter: drop-shadow(2px 2px 4px rgba(0,0,0,0.5));
}

.banner-left h2 {
    font-size: 1.8rem;
    font-weight: 200;
    letter-spacing: 2px;
    opacity: 0.9;
    color: rgba(255,255,255,0.9);
    margin: 0;
}

.banner-info {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    font-size: 1.1rem;
    line-height: 1.6;
}

.institution {
    font-size: 1.2rem;
    opacity: 0.95;
    margin: 0;
    line-height: 1.5;
}

.lab-link {
    margin: 0;
}

.lab-link a {
    color: #C5A059;
    text-decoration: none;
    font-weight: 400;
    border-bottom: 1px solid rgba(197, 160, 89, 0.5);
    transition: all 0.3s ease;
    padding-bottom: 2px;
}

.lab-link a:hover {
    border-bottom-color: #C5A059;
    text-shadow: 0 0 8px rgba(197, 160, 89, 0.3);
}

.copyright {
    font-size: 0.95rem;
    opacity: 0.7;
    margin: 0;
}

.banner-links {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

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

.link-item {
    color: rgba(255,255,255,0.8);
    text-decoration: none;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1rem;
    padding: 8px 12px;
    border-radius: 6px;
    border: 1px solid rgba(255,255,255,0.2);
    background: rgba(255,255,255,0.05);
    backdrop-filter: blur(10px);
}

.link-item:hover {
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(0,0,0,0.2);
    border-color: rgba(255,255,255,0.4);
    background: rgba(255,255,255,0.1);
}

.link-item svg {
    transition: transform 0.3s ease;
}

.link-item:hover svg {
    transform: scale(1.1);
}

.contact-note {
    font-size: 0.9rem;
    opacity: 0.7;
    margin: 0;
    font-style: italic;
}

.banner-contact {
    padding-top: 2rem;
    border-top: 1px solid rgba(255,255,255,0.15);
}

.banner-contact h3 {
    font-size: 1.3rem;
    font-weight: 300;
    margin-bottom: 1rem;
    letter-spacing: 1px;
    color: #C5A059;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.email, .phone {
    margin: 0;
    font-size: 1rem;
    opacity: 0.9;
    font-family: 'Monaco', 'Courier New', monospace;
}

.banner-right {
    display: flex;
    align-items: center;
    justify-content: center;
    padding-left: 1rem;
    padding-right: 2rem;
}

.image-container {
    position: relative;
    width: 100%;
    max-width: 450px;
    text-align: center;
}

.banner-right img {
    width: 100%;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 12px 40px rgba(0,0,0,0.4);
    transition: transform 0.3s ease, opacity 0.5s ease;
}

.banner-right img:hover {
    transform: translateY(-6px) scale(1.02);
}

.banner-right p {
    margin: 0;
    font-size: 0.9rem;
    opacity: 0.8;
    font-style: italic;
    line-height: 1.4;
    background: rgba(0,0,0,0.6);
    padding: 8px 16px;
    border-radius: 20px;
    backdrop-filter: blur(10px);
    display: inline-block;
}

@media screen and (max-width: 1024px) {
    .banner-content {
        gap: 2rem;
        padding: 0 1rem;
    }
    
    .banner-left {
        padding-left: 1rem;
        padding-right: 0.5rem;
    }
    
    .banner-right {
        padding-left: 0.5rem;
        padding-right: 1rem;
    }
    
    .banner-left h1 {
        font-size: 4rem;
    }
}

@media screen and (max-width: 768px) {
    .banner-content {
        grid-template-columns: 1fr;
        gap: 3rem;
        text-align: center;
        padding: 0;
    }
    
    .banner-left {
        padding: 0;
        align-items: center;
    }
    
    .banner-right {
        padding: 0;
    }
    
    .banner-left h1 {
        font-size: 3.5rem;
    }
    
    .banner-left h2 {
        font-size: 1.5rem;
    }
    
    .social-links {
        justify-content: center;
    }
}

@media screen and (max-width: 480px) {
    .main-banner {
        padding: 0 15px;
    }
    
    .banner-left h1 {
        font-size: 2.8rem;
        letter-spacing: 2px;
    }
    
    .banner-left h2 {
        font-size: 1.2rem;
    }
    
    .social-links {
        flex-direction: column;
        gap: 1rem;
    }
    
    .contact-info {
        align-items: center;
    }
}

::selection {
    background: rgba(197, 160, 89, 0.3);
}

::-moz-selection {
    background: rgba(197, 160, 89, 0.3);
}
/* ==================== RESPONSIVE DESIGN IMPROVEMENTS ==================== */

/* Tablet and Mobile (max-width: 900px) */
@media screen and (max-width: 900px) {
    .main-banner {
        height: auto;
        min-height: 100vh;
        padding: 100px 20px 40px; /* Top padding for navbar */
        align-items: flex-start;
    }

    .banner-content {
        grid-template-columns: 1fr;
        gap: 3rem;
        text-align: center;
        padding: 0;
        min-height: auto;
    }

    .banner-left {
        padding: 0;
        align-items: center;
        order: 1; /* Text first */
    }

    .banner-right {
        padding: 0;
        order: 2; /* Image second */
        margin-bottom: 20px;
    }

    .banner-left h1 {
        font-size: 3.5rem;
        justify-content: center;
    }

    .banner-info {
        align-items: center;
    }

    .banner-links {
        align-items: center;
        width: 100%;
    }

    .banner-contact {
        width: 100%;
        border-top: 1px solid rgba(255,255,255,0.2);
    }
}

/* Small Mobile (max-width: 480px) */
@media screen and (max-width: 480px) {
    .main-banner {
        padding: 90px 15px 30px;
    }

    .banner-left h1 {
        font-size: 2.5rem;
        flex-direction: column;
        gap: 10px;
    }

    .home-logo {
        margin-right: 0;
        height: 1.2em;
    }

    .banner-left h2 {
        font-size: 1.2rem;
    }

    .social-links {
        flex-direction: column;
        width: 100%;
        gap: 10px;
    }

    .link-item {
        width: 100%;
        justify-content: center;
    }

    .image-container {
        max-width: 100%;
    }
    
    .banner-right p {
        font-size: 0.8rem;
        padding: 6px 12px;
    }
}

/* Force text alignment for mobile */
@media screen and (max-width: 900px) {
    .banner-info, .institution, .lab-link, .copyright, .contact-note {
        text-align: center;
    }
    
    .banner-left h1 {
        width: 100%;
    }
}