/* --- Hero Banner Section --- */
.hero-banner-section {
    padding: 60px 0;
    min-height: calc(100vh - 80px);
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.banner-container {
    max-width: 1300px;
    margin: 0 auto;
    padding: 0 24px;
    display: grid;
    grid-template-columns: 1fr 1.1fr;
    gap: 48px;
    align-items: center;
}

/* --- Left Side Text Content --- */
.banner-content-block {
    display: flex;
    flex-direction: column;
}

.sub-tagline {
    color: #10b981; /* Premium Green */
    font-size: 15px;
    font-weight: 600;
    letter-spacing: 0.5px;
    margin-bottom: 16px;
    position: relative;
    padding-left: 30px;
}

.sub-tagline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 2px;
    background-color: #10b981;
}

.main-banner-heading {
    font-size: 46px;
    font-weight: 800;
    line-height: 1.2;
    color: #ffffff;
    margin-bottom: 24px;
}

.main-banner-heading span {
    color: #1e56a0; /* Royal/Academic Blue */
    background: linear-gradient(135deg, #38bdf8, #3b82f6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.banner-description {
    color: #94a3b8;
    font-size: 17px;
    line-height: 1.7;
    margin-bottom: 40px;
    max-width: 520px;
}

/* --- Left Features Grid Badges --- */
.features-badge-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 24px;
}

.badge-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    min-width: 90px;
}

.badge-icon {
    width: 40px;
    height: 40px;
    margin-bottom: 10px;
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
    transition: transform 0.3s ease;
}

/* Default SVG Placeholders/Icons for Badges (Change to your actual SVGs/Fonts if needed) */
.badge-icon.icon-naac { background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke="%2338bdf8"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M19 21V5a2 2 0 00-2-2H7a2 2 0 00-2 2v16m14 0h2m-2 0h-5m-9 0H3m2 0h5m0 0V9a2 2 0 012-2h2a2 2 0 012 2v12m-6 0h6"/></svg>'); }
.badge-icon.icon-itep { background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke="%2310b981"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M12 14l9-5-9-5-9 5 9 5zm0 0l6.16-3.422a12.083 12.083 0 01.665 6.479A11.952 11.952 0 0012 20.055a11.952 11.952 0 00-6.824-2.998 12.078 12.078 0 01.665-6.479L12 14zm-4 6v-7.5l4-2.222"/></svg>'); }
.badge-icon.icon-nirf { background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke="%2338bdf8"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 19v-6a2 2 0 00-2-2H5a2 2 0 00-2 2v6a2 2 0 002 2h2a2 2 0 002-2zm0 0V9a2 2 0 012-2h2a2 2 0 012 2v10m-6 0a2 2 0 002 2h2a2 2 0 002-2m0 0V5a2 2 0 012-2h2a2 2 0 012 2v14a2 2 0 002 2h2a2 2 0 002-2"/></svg>'); }
.badge-icon.icon-iqac { background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke="%2310b981"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M17 20h5v-2a3 3 0 00-5.356-1.857M17 20H7m10 0v-2c0-.656-.126-1.283-.356-1.857M7 20H2v-2a3 3 0 015.356-1.857M7 20v-2c0-.656.126-1.283.356-1.857m0 0a5.002 5.002 0 019.288 0M15 7a3 3 0 11-6 0 3 3 0 016 0zm6 3a2 2 0 11-4 0 2 2 0 014 0zM7 10a2 2 0 11-4 0 2 2 0 014 0z"/></svg>'); }
.badge-icon.icon-doc { background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke="%2338bdf8"><path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M9 12h6m-6 4h6m2 5H7a2 2 0 01-2-2V5a2 2 0 012-2h5.586a1 1 0 01.707.293l5.414 5.414a1 1 0 01.293.707V19a2 2 0 01-2 2z"/></svg>'); }

.badge-item:hover .badge-icon {
    transform: translateY(-5px);
}

.badge-title {
    font-size: 11px;
    font-weight: 700;
    color: #cbd5e1;
    line-height: 1.3;
}

/* --- Right Side Dynamic Image Showcase Slider --- */
.banner-slider-block {
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.main-image-viewer {
    width: 100%;
    height: 420px;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.main-image-viewer img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: opacity 0.4s ease-in-out;
}

/* Floating Overlay Thumbnail Track styling */
.thumbnails-track-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-top: -50px; /* Overlaps the bottom of the main viewer */
    padding: 0 30px;
    z-index: 10;
}

.thumb-card {
    height: 100px;
    border-radius: 12px;
    overflow: hidden;
    cursor: pointer;
    border: 3px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    background: #0f172a;
}

.thumb-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.thumb-card:hover {
    transform: translateY(-8px);
    border-color: #38bdf8;
}

.thumb-card.active {
    border-color: #38bdf8;
    box-shadow: 0 0 15px rgba(56, 189, 248, 0.6);
    transform: translateY(-4px);
}

/* --- RESPONSIVE MEDIA BREAKPOINTS --- */
@media (max-width: 991px) {
    .banner-container {
        grid-template-columns: 1fr;
        gap: 60px;
        text-align: center;
    }

    .banner-content-block {
        align-items: center;
    }

    .sub-tagline {
        padding-left: 0;
    }
    .sub-tagline::before {
        display: none;
    }

    .main-banner-heading {
        font-size: 36px;
    }

    .features-badge-grid {
        justify-content: center;
    }

    .main-image-viewer {
        height: 320px;
    }
}

@media (max-width: 576px) {
    .thumbnails-track-grid {
        padding: 0 10px;
        margin-top: 16px; /* Remove overlap on tiny mobile screens */
    }
    
    .thumb-card {
        height: 70px;
    }
}