/* ==========================================================================
   Header & Navigation
   ========================================================================== */

.site-header {
    box-shadow: var(--shadow-sm);
}

.utility-bar {
    background: var(--cirb-navy);
    color: #eef3f1;
    font-size: 0.9rem;
    padding: 0.35rem 0;
}

    .utility-bar a {
        color: #fff;
    }

.brand-row {
    background: #fff;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--cirb-border);
}
    .brand-row h2 {
        font-size: clamp(1.2rem, 1.4vw, 1.6rem);
        font-weight: 600;
        line-height: 0.9;
        letter-spacing: -0.05em;
        color: var(--cirb-navy);
        ;
    }

.primary-nav {
    background: #fff;
    padding: 0.25rem 0;
}

    .primary-nav .nav-link {
        font-weight: 700;
        color: var(--cirb-navy);
        white-space: nowrap;
        min-height: 44px;
        display: flex;
        align-items: center;
    }

        .primary-nav .nav-link.active,
        .primary-nav .nav-link:hover {
            color: var(--cirb-green);
        }

.site-header.is-compact .brand-row {
    padding: 0.35rem 0;
}

.site-header.is-compact .institutional-logo {
    height: 40px;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */

.hero-carousel .carousel-item {
    min-height: clamp(560px, 70vh, 760px);
    background-position: center;
    background-size: cover;
}

.hero-panel {
    min-height: inherit;
    display: flex;
    align-items: center;
    background: linear-gradient( 90deg, rgba(7, 24, 18, 0.88) 0%, rgba(7, 24, 18, 0.72) 48%, rgba(7, 24, 18, 0.18) 100% );
    color: #fff;
}

.hero-copy {
    max-width: 760px;
}

.hero-eyebrow {
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: #f8d08a;
    font-weight: 800;
}

.hero-copy h1 {
    font-size: clamp(2rem, 5vw, 4rem);
    font-weight: 700;
    line-height: 0.9;
    letter-spacing: -0.05em;
}

.hero-theme {
    font-size: clamp(1.25rem, 2.6vw, 2rem);
    max-width: 920px;
    line-height: 1.25;
}

.hero-meta {
    font-size: clamp(1rem, 1.6vw, 1.25rem);
    color: #e8eee9;
}

/* ==========================================================================
   General Components & Sections
   ========================================================================== */

.home-section {
    padding: clamp(3rem, 6vw, 5rem) 0;
}

.highlight-card {
    border-top: 4px solid var(--cirb-gold);
}

.image-strip img {
    aspect-ratio: 4 / 3;
    object-fit: cover;
    border-radius: var(--radius);
    width: 100%;
    box-shadow: var(--shadow-sm);
}

/* ==========================================================================
   Conference Purpose Cards
   ========================================================================== */

.conference-purpose {
    background-color: var(--cirb-page, #f6f8f5);
}

.purpose-eyebrow {
    color: var(--cirb-gold, #b7842f);
    letter-spacing: 0.1em;
    font-size: 0.85rem;
}

.purpose-card {
    border-radius: var(--radius-lg, 1rem);
    overflow: hidden;
    transition: transform 0.35s cubic-bezier(0.165, 0.84, 0.44, 1), box-shadow 0.35s ease;
    background: var(--cirb-card, #ffffff);
    border: 1px solid var(--cirb-border, #d8e0d8) !important;
}

    .purpose-card:hover {
        transform: translateY(-8px);
        box-shadow: var(--shadow, 0 0.75rem 2rem rgba(24, 36, 51, 0.12)) !important;
    }

/* Image & Icon Overlay */
.purpose-img-wrapper {
    position: relative;
    height: 190px;
    overflow: hidden;
}

    .purpose-img-wrapper img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        transition: transform 0.5s ease;
    }

.purpose-card:hover .purpose-img-wrapper img {
    transform: scale(1.08);
}

.purpose-icon-badge {
    position: absolute;
    bottom: -18px;
    left: 20px;
    width: 42px;
    height: 42px;
    background: var(--cirb-green, #123f2a);
    color: #ffffff;
    border-radius: var(--radius, 0.65rem);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.15);
    border: 2px solid #ffffff;
}

    .purpose-icon-badge.badge-gold {
        background: var(--cirb-gold, #b7842f);
    }

/* Typography & Content */
.purpose-card-title {
    color: var(--cirb-navy, #182433);
    font-weight: 700;
    font-size: 1.15rem;
    margin-top: 0.5rem;
}

.purpose-tag {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--cirb-green, #123f2a);
    background-color: #e7f1ea;
    padding: 0.3rem 0.7rem;
    border-radius: var(--radius-sm, 0.35rem);
}

    .purpose-tag.tag-gold {
        color: #724d08;
        background-color: #fdf3d8;
    }

/* Highlight Featured Card */
.purpose-card-highlight {
    border-top: 4px solid var(--cirb-gold, #b7842f) !important;
}

/* ==========================================================================
   Single Row Technical Sessions Layout (No Horizontal Scrollbar)
   ========================================================================== */

.tech-sessions-section {
    background-color: var(--cirb-page, #f6f8f5);
    overflow-x: hidden !important; /* Prevents horizontal scrollbar */
}

/* Flex distribution so all 5 cards split the screen width evenly */
.tech-sessions-container {
    width: 100%;
}

.tech-session-col {
    flex: 1 1 0;
    min-width: 0; /* Allows text clipping/wrapping inside flex items without causing overflow */
}

.tech-session-card {
    background-color: var(--cirb-card, #ffffff);
    border-radius: var(--radius-lg, 0.85rem) !important;
    transition: transform 0.3s cubic-bezier(0.165, 0.84, 0.44, 1), box-shadow 0.3s ease;
    position: relative;
    overflow: hidden;
}

    .tech-session-card::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 4px;
        background-color: var(--cirb-green, #123f2a);
        opacity: 0;
        transition: opacity 0.3s ease;
    }

    .tech-session-card:hover {
        transform: translateY(-4px);
        box-shadow: var(--shadow, 0 .75rem 2rem rgba(24,36,51,.12)) !important;
    }

        .tech-session-card:hover::before {
            opacity: 1;
        }

.session-card-title {
    color: var(--cirb-navy, #182433);
    font-size: clamp(0.9rem, 1vw, 1.05rem);
    line-height: 1.25;
}

.session-card-text {
    font-size: clamp(0.78rem, 0.85vw, 0.85rem);
    line-height: 1.45;
}

/* Compact Badges & Icons */
.session-badge {
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    padding: 0.2rem 0.45rem;
    border-radius: var(--radius-sm, 0.25rem);
    white-space: nowrap;
}

.session-badge-1 {
    background-color: #e3f2fd;
    color: #0d6efd;
}

.session-badge-2 {
    background-color: #f8d7da;
    color: #b02a37;
}

.session-badge-3 {
    background-color: #e7f1ea;
    color: var(--cirb-green, #123f2a);
}

.session-badge-4 {
    background-color: #fff3cd;
    color: #664d03;
}

.session-badge-5 {
    background-color: #e2e3e5;
    color: #41464b;
}

.session-icon-box {
    width: 32px;
    height: 32px;
    font-size: 0.9rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.icon-box-1 {
    background-color: rgba(13, 110, 253, 0.1);
    color: #0d6efd;
}

.icon-box-2 {
    background-color: rgba(220, 53, 69, 0.1);
    color: #dc3545;
}

.icon-box-3 {
    background-color: rgba(18, 63, 42, 0.1);
    color: var(--cirb-green, #123f2a);
}

.icon-box-4 {
    background-color: rgba(255, 193, 7, 0.15);
    color: #b87913;
}

.icon-box-5 {
    background-color: rgba(108, 117, 125, 0.15);
    color: #495057;
}

.session-footer {
    font-size: clamp(0.68rem, 0.75vw, 0.75rem);
    line-height: 1.2;
}

/* Responsive Handling: Stack on mobile / tablet screens to prevent squeezed cards */
@media (max-width: 991.98px) {
    .tech-sessions-container {
        flex-wrap: wrap !important;
    }

    .tech-session-col {
        flex: 0 0 calc(50% - 0.5rem);
        max-width: calc(50% - 0.5rem);
    }
}

@media (max-width: 575.98px) {
    .tech-session-col {
        flex: 0 0 100%;
        max-width: 100%;
    }
}

/* ==========================================================================
   Host Institute Section Styles
   ========================================================================== */

.host-institute-section {
    background-color: var(--cirb-page, #f6f8f5);
}

.host-institute-card {
    background-color: var(--cirb-card, #ffffff);
    border-radius: var(--radius-lg, 1rem) !important;
    box-shadow: 0 0.5rem 1.5rem rgba(24, 36, 51, 0.06) !important;
}

.host-image-wrapper {
    width: 100%;
    height: 100%;
    min-height: 260px;
    border-radius: var(--radius, 0.65rem);
    overflow: hidden;
}

.host-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    border-radius: var(--radius, 0.65rem) !important;
    transition: transform 0.4s ease;
}

.host-institute-card:hover .host-img {
    transform: scale(1.02);
}

.host-eyebrow {
    color: var(--cirb-success, #1f7a4d) !important;
    font-size: 0.85rem;
    letter-spacing: 0.08em;
}

.host-title {
    color: var(--cirb-navy, #182433);
    font-size: clamp(1.4rem, 2.2vw, 1.85rem);
    line-height: 1.25;
    letter-spacing: -0.02em;
}

.host-description {
    color: var(--cirb-muted, #61706a) !important;
    font-size: 0.95rem;
    line-height: 1.6;
}

/* Custom Button Styling matching design screenshot */
.host-btn {
    color: var(--cirb-green-700, #0b2c1d);
    border-color: var(--cirb-green-700, #0b2c1d);
    border-width: 1.5px;
    border-radius: var(--radius-sm, 0.35rem);
    transition: all 0.25s ease-in-out;
}

    .host-btn:hover,
    .host-btn:focus {
        background-color: var(--cirb-green-700, #0b2c1d);
        border-color: var(--cirb-green-700, #0b2c1d);
        color: #ffffff;
        box-shadow: 0 4px 10px rgba(11, 44, 29, 0.2);
    }



/* ==========================================================================
   Important Dates Section
   ========================================================================== */

.important-dates-section {
    background-color: var(--cirb-page, #f6f8f5);
}

.dates-eyebrow {
    color: var(--cirb-success, #1f7a4d);
    font-size: 0.85rem;
    letter-spacing: 0.1em;
}

.dates-title {
    color: var(--cirb-navy, #182433);
    letter-spacing: -0.02em;
}

/* Date Cards Styling */
.date-card {
    background-color: var(--cirb-card, #ffffff);
    border-radius: var(--radius-lg, 1rem) !important;
    position: relative;
    overflow: hidden;
    /* Soft left accent border using your primary gold/amber variable */
    border-left: 5px solid var(--cirb-gold, #f5a623) !important;
    transition: transform 0.25s ease, box-shadow 0.25s ease;
}

    .date-card:hover {
        transform: translateY(-3px);
        box-shadow: var(--shadow, 0 .75rem 2rem rgba(24, 36, 51, 0.12)) !important;
    }

.date-label {
    font-size: 0.9rem;
    color: var(--cirb-muted, #61706a) !important;
}

.date-value {
    color: var(--cirb-navy, #182433);
    font-size: clamp(1.25rem, 1.8vw, 1.5rem);
    line-height: 1.2;
}

/* ==========================================================================
   Registration & CTA Section (Side-by-Side Single Row)
   ========================================================================== */

.registration-cta-section {
    background-color: var(--cirb-page, #f6f8f5);
}

/* --------------------------------------------------------------------------
   Left Column: Registration Fees Card & Table
   -------------------------------------------------------------------------- */
.registration-fees-card {
    background-color: var(--cirb-card, #ffffff);
    border-radius: var(--radius-lg, 1rem) !important;
}

.registration-eyebrow {
    color: var(--cirb-success, #1f7a4d);
    font-size: 0.8rem;
    letter-spacing: 0.08em;
}

.registration-title {
    color: var(--cirb-navy, #182433);
    letter-spacing: -0.01em;
}

.registration-table {
    border-collapse: separate;
    border-spacing: 0;
    width: 100%;
}

    .registration-table thead tr th {
        background-color: var(--cirb-green-700, #0b2c1d);
        color: #ffffff;
        font-weight: 600;
        font-size: 0.85rem;
        padding: 0.75rem 1rem;
        border: none;
    }

        /* Rounded top corners for table header */
        .registration-table thead tr th:first-child {
            border-top-left-radius: var(--radius-sm, 0.35rem);
        }

        .registration-table thead tr th:last-child {
            border-top-right-radius: var(--radius-sm, 0.35rem);
        }

    .registration-table tbody tr td {
        padding: 0.75rem 1rem;
        color: var(--cirb-text, #1d2924);
        border-bottom: 1px solid var(--cirb-border, #d8e0d8);
        font-size: 0.9rem;
    }

    .registration-table tbody tr:last-child td {
        border-bottom: none;
    }

.table-footnote p {
    font-size: 0.8rem;
}

.fs-xs {
    font-size: 0.75rem;
}

/* --------------------------------------------------------------------------
   Right Column: CTA Banner Card
   -------------------------------------------------------------------------- */
.cta-banner-card {
    background: linear-gradient(135deg, var(--cirb-green-700, #0b2c1d) 0%, var(--cirb-navy, #182433) 100%);
    border-radius: var(--radius-lg, 1rem) !important;
}

.cta-banner-title {
    font-size: clamp(1.2rem, 1.7vw, 1.6rem);
    line-height: 1.3;
    letter-spacing: -0.01em;
}

.cta-banner-subtext {
    max-width: 440px;
    line-height: 1.5;
}

/* CTA Buttons */
.btn-registration {
    background-color: var(--cirb-gold, #b7842f) !important;
    border-color: var(--cirb-gold, #b7842f) !important;
    color: #182433 !important;
    border-radius: var(--radius-sm, 0.35rem);
    transition: all 0.25s ease;
}

    .btn-registration:hover {
        background-color: #a07226 !important;
        border-color: #a07226 !important;
        transform: translateY(-2px);
        box-shadow: 0 4px 12px rgba(183, 132, 47, 0.3);
    }

.btn-abstract {
    border-color: rgba(255, 255, 255, 0.8) !important;
    color: #ffffff !important;
    border-radius: var(--radius-sm, 0.35rem);
    transition: all 0.25s ease;
}

    .btn-abstract:hover {
        background-color: rgba(255, 255, 255, 0.15) !important;
        border-color: #ffffff !important;
        color: #ffffff !important;
        transform: translateY(-2px);
    }



/* ==========================================================================
   Auto-Scrolling Image Grid / Marquee
   ========================================================================== */

.auto-grid-section {
    background-color: var(--cirb-page, #f6f8f5);
}

/* Outer Container hiding scrollbars */
.auto-grid-track-wrapper {
    width: 100%;
    overflow: hidden;
    position: relative;
    padding: 0.5rem 0;
}

    /* Left & Right gradient fade masks for smooth entry/exit */
    .auto-grid-track-wrapper::before,
    .auto-grid-track-wrapper::after {
        content: '';
        position: absolute;
        top: 0;
        width: 80px;
        height: 100%;
        z-index: 2;
        pointer-events: none;
    }

    .auto-grid-track-wrapper::before {
        left: 0;
        background: linear-gradient(to right, var(--cirb-page, #f6f8f5), transparent);
    }

    .auto-grid-track-wrapper::after {
        right: 0;
        background: linear-gradient(to left, var(--cirb-page, #f6f8f5), transparent);
    }

/* Moving Track */
.auto-grid-track {
    display: flex;
    gap: 1rem;
    width: max-content;
    animation: gridContinuousScroll 35s linear infinite;
}

/* Pause Scrolling on Mouse Hover */
.auto-grid-track-wrapper:hover .auto-grid-track {
    animation-play-state: paused;
}

/* Individual Card Sizing */
.auto-grid-card-col {
    width: 280px;
    flex-shrink: 0;
}

.auto-grid-card {
    background-color: var(--cirb-card, #ffffff);
    border-radius: var(--radius, 0.65rem) !important;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

    .auto-grid-card:hover {
        transform: translateY(-4px);
        box-shadow: var(--shadow, 0 .75rem 2rem rgba(24,36,51,.12)) !important;
    }

.grid-img-wrapper {
    width: 100%;
    height: 180px;
    overflow: hidden;
    background-color: #e2e8f0;
}

.grid-card-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.4s ease;
}

.auto-grid-card:hover .grid-card-img {
    transform: scale(1.05);
}

.auto-grid-card .card-title {
    color: var(--cirb-navy, #182433);
}

.auto-grid-card .card-text {
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* Infinite Scrolling Animation Keyframes */
@keyframes gridContinuousScroll {
    0% {
        transform: translateX(0);
    }

    100% {
        transform: translateX(calc(-50% - 0.5rem));
    }
}

/* ==========================================================================
   Gallery & Map Section with Lightbox Popup Modal
   ========================================================================== */

.gallery-map-section {
    background-color: var(--cirb-page, #f6f8f5);
}

.gallery-eyebrow {
    color: var(--cirb-success, #1f7a4d);
    font-size: 0.75rem;
    letter-spacing: 0.08em;
}

.gallery-title {
    color: var(--cirb-navy, #182433);
    letter-spacing: -0.01em;
}

.gallery-card,
.map-card {
    background-color: var(--cirb-card, #ffffff);
    border-radius: var(--radius-lg, 1rem) !important;
}

/* --------------------------------------------------------------------------
   2-Row Grid Layout (8 Columns x 2 Rows)
   -------------------------------------------------------------------------- */
.gallery-2row-grid {
    display: flex;
    flex-wrap: wrap;
}

.gallery-col {
    flex: 0 0 12.5%; /* 8 thumbnails per row = 12.5% */
    max-width: 12.5%;
    padding: 0.25rem;
}

.gallery-zoom-box {
    position: relative;
    width: 100%;
    aspect-ratio: 4 / 3;
    background-color: var(--cirb-page, #f6f8f5);
    cursor: pointer;
}

.gallery-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.35s cubic-bezier(0.165, 0.84, 0.44, 1);
}

.gallery-zoom-box:hover .gallery-img {
    transform: scale(1.18);
}

/* Hover overlay icon */
.gallery-hover-overlay {
    position: absolute;
    inset: 0;
    background: rgba(11, 44, 29, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.25s ease;
}

.gallery-zoom-box:hover .gallery-hover-overlay {
    opacity: 1;
}

/* --------------------------------------------------------------------------
   Google Map Styling
   -------------------------------------------------------------------------- */
.map-container {
    width: 100%;
    min-height: 180px;
    position: relative;
    border: 1px solid var(--cirb-border, #d8e0d8);
}

    .map-container iframe {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
    }

.map-info {
    font-size: 0.78rem;
    line-height: 1.3;
}

/* --------------------------------------------------------------------------
   Lightbox Pop-in Modal Styling & Navigation Buttons
   -------------------------------------------------------------------------- */
.lightbox-modal-img {
    max-height: 70vh;
    object-fit: contain;
}

.lightbox-nav-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0, 0, 0, 0.5);
    color: #ffffff;
    border-radius: 50%;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s ease, transform 0.2s ease;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

    .lightbox-nav-btn:hover {
        background: var(--cirb-gold, #b7842f);
        color: #ffffff;
        transform: translateY(-50%) scale(1.1);
    }

.lightbox-prev-btn {
    left: 15px;
}

.lightbox-next-btn {
    right: 15px;
}

/* Responsive fallbacks for tablet/mobile */
@media (max-width: 1199.98px) {
    .gallery-col {
        flex: 0 0 25%; /* 4 items per row on medium screens */
        max-width: 25%;
    }
}

@media (max-width: 575.98px) {
    .gallery-col {
        flex: 0 0 50%; /* 2 items per row on mobile */
        max-width: 50%;
    }
}
/* ==========================================================================
   Footer
   ========================================================================== */

.site-footer {
    background: var(--cirb-green-700);
    color: #eef7f1;
    margin-top: 0;
}

    .site-footer a {
        display: block;
        color: #fff;
        text-decoration: none;
        margin: 0.35rem 0;
    }

        .site-footer a:hover {
            text-decoration: underline;
        }

/* ==========================================================================
   Footer Section Styles
   ========================================================================== */

.site-footer {
    background-color: var(--cirb-green-700, #071812);
    color: #eef7f1;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-heading {
    letter-spacing: -0.01em;
}

.footer-subheading {
    line-height: 1.5;
    max-width: 380px;
}

/* Footer Navigation Links */
.footer-links li {
    margin-bottom: 0.45rem;
}

.footer-links a,
.footer-contact-link {
    color: rgba(255, 255, 255, 0.75) !important;
    text-decoration: none;
    transition: color 0.2s ease;
    display: inline-block;
}

    .footer-links a:hover,
    .footer-contact-link:hover {
        color: #ffffff !important;
        text-decoration: underline;
    }

/* Download Brochure Button */
.btn-download-brochure {
    background-color: var(--cirb-gold, #f5a623) !important;
    border-color: var(--cirb-gold, #f5a623) !important;
    color: #071812 !important;
    border-radius: var(--radius-sm, 0.25rem);
    transition: all 0.25s ease;
}

    .btn-download-brochure:hover {
        background-color: #d9911b !important;
        border-color: #d9911b !important;
        transform: translateY(-2px);
        box-shadow: 0 4px 10px rgba(245, 166, 35, 0.3);
    }

/* Contact Button */
.btn-contact-outline {
    border-color: rgba(255, 255, 255, 0.6) !important;
    color: #ffffff !important;
    border-radius: var(--radius-sm, 0.25rem);
    transition: all 0.25s ease;
}

    .btn-contact-outline:hover {
        background-color: rgba(255, 255, 255, 0.15) !important;
        border-color: #ffffff !important;
        transform: translateY(-2px);
    }

/* Footer Divider */
.footer-divider {
    border-color: rgba(255, 255, 255, 0.12);
    opacity: 1;
}

/* Bottom Legal Links */
.bottom-legal-links a {
    color: rgba(255, 255, 255, 0.7) !important;
    text-decoration: none;
    transition: color 0.2s ease;
}

    .bottom-legal-links a:hover {
        color: #ffffff !important;
        text-decoration: underline;
    }

/* ==========================================================================
   Media Queries
   ========================================================================== */

@media (max-width: 1199.98px) {
    .primary-nav .navbar-nav {
        flex-wrap: wrap;
    }

    .primary-nav .nav-link {
        white-space: normal;
    }
}

@media (max-width: 767.98px) {
    .hero-panel {
        background: linear-gradient( 180deg, rgba(7, 24, 18, 0.9), rgba(7, 24, 18, 0.68) );
    }

    .hero-carousel .carousel-item {
        min-height: 620px;
    }

    .brand-cta {
        display: none !important;
    }
}