/* Google Fonts Import */
@import url('https://fonts.googleapis.com/css2?family=Barlow:wght@300;400;500;600;700;800&display=swap');

/* CSS Variables */
:root {
    --primary-color: #63B3EF;
    --secondary-color: #4A90E2;
    --text-dark: #333333;
    --text-light: #666666;
    --bg-light: #f8f9fa;
    --white: #ffffff;
    --border-color: #e0e0e0;
}

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

body {
    font-family: 'Barlow', sans-serif;
    font-weight: 400;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--white);
}

main {
    min-height: 600px;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: 'Barlow', sans-serif;
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: 0;
    letter-spacing: 0.15rem;
}

p {
    margin-bottom: 0;
}

.text-primary {
    color: var(--primary-color) !important;
}

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

/* Header Styles */

.header-logo {
    width: 100%;
    max-width: 800px;
    margin: 0 auto;
}

.header-logo-container p {
    color: var(--primary-color);
    font-weight: 600;
    padding: 20px;
}

.site-header {
    background-color: var(--white);
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

.navbar {
    background-color: var(--primary-color);
    color: #ffffff;
    padding: 0;
}

.navbar-brand {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-color);
}

.navbar-nav .nav-link {
    font-weight: 500;
    color: #fff;
    transition: color 0.3s ease;
}

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

/* Dropdown Menu */
.dropdown-menu {
    border: none;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.15);
    border-radius: 8px;
}

.dropdown-item {
    padding: 0.75rem 1.5rem;
    font-weight: 400;
    transition: background-color 0.3s ease;
}

.dropdown-item:hover {
    background-color: var(--bg-light);
    color: var(--primary-color);
}

/* Hamburger Menu */
.hamburger-menu {
    display: none;
    position: fixed;
    top: 10px;
    right: 10px;
    z-index: 1001;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--primary-color);
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
}

.hamburger-menu:hover {
    background-color: var(--secondary-color);
    transform: scale(1.1);
}

.hamburger-menu span {
    display: block;
    width: 20px;
    height: 2px;
    background-color: var(--white);
    margin: 6px auto;
    transition: all 0.3s ease;

}

.hamburger-menu.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

.hamburger-menu.active span:nth-child(2) {
    opacity: 0;
}

.hamburger-menu.active span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -5px);
}

/* Mobile Menu Overlay */
.mobile-menu-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    z-index: 1000;
    display: none;
    align-items: center;
    justify-content: center;
}

.mobile-menu-overlay.active {
    display: flex;
}

.mobile-menu-content {
    text-align: center;
}

.mobile-menu-content .nav-link {
    display: block;
    color: var(--white);
    font-size: 2rem;
    font-weight: 600;
    text-decoration: none;
    margin: 1rem 0;
    transition: all 0.3s ease;
}

.mobile-menu-content .nav-link:hover {
    transform: scale(1.1);
    text-shadow: 0 0 20px rgba(255, 255, 255, 0.5);
}

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white);
    padding: 120px 0 80px;
    margin-top: 70px;
}

.hero-title {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 1rem;
}

.hero-subtitle {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.hero-location {
    font-size: 1.2rem;
    font-weight: 500;
    margin-bottom: 1rem;
}

.hero-description {
    font-size: 1.1rem;
    font-weight: 400;
    opacity: 0.9;
}

.hero-nav .nav {
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
    padding: 1rem;
}

.hero-nav .nav-link {
    color: var(--white);
    font-weight: 500;
    padding: 0.75rem 1rem;
    border-radius: 5px;
    transition: all 0.3s ease;
}

.hero-nav .nav-link:hover {
    background-color: rgba(255, 255, 255, 0.2);
    transform: translateX(5px);
}

/* Section Styles */
.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    position: relative;
    letter-spacing: 0.1rem;
    border-bottom: #000 double;
}

.section-title span {
    color: var(--primary-color);
}

.subsection-title {
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: 2rem;
    color: var(--text-dark);
    letter-spacing: 0.2rem;
}

/* High School Session */
.high-school-section {
    padding: 80px 0;
}

.session-block {
    overflow: hidden;
}

.session-header {
    padding: 0.8rem;
    background-color: var(--primary-color);
    text-align: center;
    letter-spacing: 0.1rem;
    margin-bottom: 15px;
    border-radius: 0.5rem;
    box-shadow: 0 5px 2px rgba(0, 0, 0, 0.1);
}

.session-header h4 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.session-header p {
    margin: 0;
    opacity: 0.9;
}

.schedule-table {
    background-color: var(--white);
}

.schedule-row {
    display: flex;
    border-bottom: 1px solid var(--border-color);
    transition: background-color 0.3s ease;
    text-align: center;
}

.schedule-row:hover {
    background-color: var(--bg-light);
}

.schedule-row:last-child {
    border-bottom: none;
}

.time-col {
    flex: 0 0 120px;
    padding: 1rem;
    background-color: var(--primary-color);
    font-weight: 600;
    color: #fff;
    border-right: 1px solid var(--border-color);
    display: flex;
    justify-content: center;
    align-items: center;
}

.content-col {
    flex: 1;
    padding: 1rem;
    font-weight: 600;
    border-right: 1px solid var(--border-color);
}

/* Sidebar */
.sidebar {
    position: sticky;
    top: 100px;
}

.flyer-card {
    transition: 0.5s;
}

.flyer-card:hover {
    opacity: 0.5;
}

.flyer-card,
.contact-card {
    border-radius: 10px;
    overflow: hidden;
}

.card-header {
    padding: 1rem;
    font-weight: 600;
    background-color: var(--primary-color);
    border-radius: 0.5rem !important;

}

.card-header h5.flyer-title {
    padding: 20px;
    background: #28CADF;
    border-radius: 0.4rem;
}

.card-body {
    padding: 1rem;
    font-weight: 600;
}

.venue-card h6 {
    letter-spacing: 0.03rem;
    font-size: 1.2rem;
}


/* Speakers Section */
.speakers-section {
    padding: 80px 0;
}

.speaker-card {
    background-color: var(--white);
    padding: 1rem;
}

.speaker-card:hover {
    transform: translateY(-5px);
}

.speaker-image img {
    width: 150px;
    height: 200px;
    object-fit: cover;
}

.speaker-info h5 {
    font-weight: 600;
    margin-bottom: 0.5rem;
    letter-spacing: 0;
}

.speaker-info .text-muted {
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
    font-weight: 600;
    border-bottom: #000 solid 1px;
    padding-bottom: 0.5rem;
}

.speaker-info .small {
    font-size: 0.85rem;
    margin-bottom: 1rem;
}

.speaker-title {
    color: var(--primary-color);
}

/* CTA Section */
.cta-section {
    padding: 80px 0;
    border-top: var(--primary-color) 1px solid;
    border-bottom: var(--primary-color) 1px solid;
}

.cta-title {
    font-size: 2rem;
    font-weight: 500;
    color: var(--primary-color-);
    margin-bottom: 1rem;
}

.cta-main {
    font-size: 3rem;
    font-weight: 800;
    color: var(--primary-color);
    letter-spacing: 0.3rem;
}

/* Poster Competition Section */
.poster-competition {
    padding: 80px 0 0px;
}

.competition-content h4 {
    font-size: 1.5rem;
    font-weight: 600;
    padding-bottom: 0.5rem;
    margin-bottom: 1rem;
    border-bottom: 1px solid #000;
    letter-spacing: 0;
}

.competition-content p {
    margin-bottom: 1.5rem;
    line-height: 1.7;
    font-weight: 500;
}

.competition-content ul {
    margin-bottom: 2rem;
    padding-left: 1rem;
    list-style: auto;
    font-weight: 500;
}

.competition-content li {
    margin-bottom: 0.5rem;
    line-height: 1.6;
}

/* Contact Section */
.contact-section {
    padding: 60px 0;
    text-align: center;
}

.contact-section a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
}

.contact-section a:hover {
    text-decoration: underline;
}

/* Sponsorship container */

.sponsorship-container {
    margin-bottom: 20px;
    font-weight: 500;
}

/* Gallery Section */
.gallery-section {
    padding: 20px 0;
}

.gallery-section img {
    transition: transform 0.3s ease;
    cursor: pointer;
}

.gallery-section img:hover {
    transform: scale(1.05);
}



/* Back to Top Button */
.btn-back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: var(--primary-color);
    color: var(--white);
    border: none;
    font-size: 1.2rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 999;
}

.btn-back-to-top.show {
    opacity: 1;
    visibility: visible;
}

.btn-back-to-top:hover {
    background-color: var(--secondary-color);
    transform: scale(1.1);
}

/* Footer */
.site-footer {
    border-top: 1px solid var(--primary-color);
    border-bottom: 1px solid var(--primary-color);
}


.footer-content {
    font-weight: 600;
    color: var(--primary-color);
    padding: 20px 0;
}

.footer-content p {
    font-size: 1.2rem;
}

.corp {
    height: 15px;
    background-color: var(--primary-color);
}

/* Submission */

.btn-submission {
    --bs-btn-color: #fff;
    --bs-btn-bg: var(--primary-color, #4A90E2);
    --bs-btn-border-color: var(--primary-color, #4A90E2);
    --bs-btn-hover-color: #fff;
    --bs-btn-hover-bg: var(--secondary-color, #63B3EF);
    --bs-btn-hover-border-color: var(--secondary-color, #63B3EF);
    --bs-btn-focus-shadow-rgb: 49, 132, 253, .5;
    --bs-btn-active-color: #fff;
    --bs-btn-active-bg: var(--secondary-color, #63B3EF);
    --bs-btn-active-border-color: var(--secondary-color, #63B3EF);
    padding: 12px 45px;
    width: 500px;
    font-size: 1.1rem;
    font-weight: bold;
    border-radius: 0.5rem;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    letter-spacing: 1px;
    text-transform: uppercase;
}

.btn-submission:hover,
.btn-submission:focus {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
}

/* Committee */
/* ========================================
   Committee Page Styles
======================================== */

/* Committee Group */
.committee-group {
    border: 1px solid var(--border-color);
    margin-bottom: 2rem;
}

/* Committee Header */
.committee-header {
    background-color: var(--primary-color);
    padding: 1rem;
    text-align: center;
    border-right: 1px solid var(--border-color);
}

.committee-title {
    color: var(--white);
    font-size: 1.5rem;
    font-weight: 600;
    margin: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.committee-title i {
    font-size: 1.2rem;
    margin-right: 0.5rem;
}

/* Committee Table */
.committee-table-wrapper {
    padding: 0;
}

.committee-table {
    width: 100%;
    border-collapse: collapse;
    margin: 0;
}

.committee-table tbody tr {
    display: flex;
    border-bottom: 1px solid var(--border-color);
    transition: background-color 0.3s ease;
    text-align: center;
}

.committee-table tbody tr:hover {
    background-color: var(--bg-light);
}

.committee-table tbody tr:last-child {
    border-bottom: 1px solid var(--border-color);
}

.committee-table td {
    padding: 1rem;
    vertical-align: middle;
    border-right: 1px solid var(--border-color);
}

.member-name {
    flex: 0 0 400px;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-dark);
    display: flex;
    justify-content: center;
    align-items: center;
}

.member-affiliation {
    flex: 1;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-dark);
    display: flex;
    justify-content: center;
    align-items: center;
}

/* Animation Effects */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.committee-group {
    animation: fadeInUp 0.8s ease-out;
}

.committee-group:nth-child(2) {
    animation-delay: 0.2s;
}

.committee-group:nth-child(3) {
    animation-delay: 0.4s;
}

.committee-group:nth-child(4) {
    animation-delay: 0.6s;
}

/* Responsive Design */
@media (max-width: 991.98px) {
    .committee-title {
        font-size: 1.8rem;
        flex-direction: column;
        gap: 0.5rem;
    }

    .committee-title i {
        font-size: 2rem;
    }



    .member-name {
        font-size: 1.1rem;
    }

    .member-affiliation {
        font-size: 1rem;
    }
}

@media (max-width: 767.98px) {
    .committee-header {
        padding: 1.5rem;
    }

    .committee-title {
        font-size: 1.5rem;
    }

    .committee-table {
        display: block;
        overflow-x: auto;
        white-space: nowrap;
    }

    .committee-table tbody,
    .committee-table tr,
    .committee-table td {
        display: block;
        width: 100%;
    }

    .committee-table tr {
        border: 1px solid var(--border-color);
        background-color: var(--white);
    }

    .committee-table td {
        border: none;
        text-align: center;
        padding: 0.2rem;
        margin-bottom: 0;
    }

    .member-name {
        font-size: 1.2rem;
        font-weight: 700;
        margin-bottom: 0.5rem;
        width: 100%;
    }

    .member-affiliation {
        font-size: 1rem;
        font-weight: 500;
        width: 100%;
    }
}

@media (max-width: 575.98px) {
    .committee-title {
        font-size: 1.3rem;
    }

    .member-name {
        font-size: 1.1rem;
    }

    .member-affiliation {
        font-size: 0.95rem;
    }

    .committee-table tbody tr{
        display: block;
    }
}

/* Responsive Design */
@media (max-width: 991.98px) {

    .header-logo {
        width: 100%;
        max-width: 600px;
        padding-bottom: 10px;
        margin: 10px;
    }

    .navbar-nav {
        display: none;
    }

    .header-logo-container p {
        padding: 10px;
        font-size: 0.8rem;
    }

    .hamburger-menu {
        display: block;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.3rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .cta-main {
        font-size: 2.5rem;
    }

    .sidebar {
        position: static;
        margin-top: 3rem;
    }

    .time-col {
        flex: 0 0 100px;
        font-size: 0.9rem;
    }

    .speaker-card {
        flex-direction: column;
        text-align: center;
    }

    .speaker-image {
        margin-bottom: 1rem;
    }
}

@media (max-width: 767.98px) {
    .hero-section {
        padding: 100px 0 60px;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

    .section-title {
        font-size: 1.8rem;
    }

    .cta-title {
        font-size: 1.5rem;
    }

    .cta-main {
        font-size: 2rem;
    }

    .schedule-row {
        flex-direction: column;
    }

    .time-col {
        flex: none;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
    }

    .competition-content {
        padding: 0 1rem;
    }
}

@media (max-width: 575.98px) {

    .header-logo {
        width: 100%;
        max-width: 250px;
        margin: 10px 10px;
    }

    .hero-title {
        font-size: 1.8rem;
    }

    .section-title {
        font-size: 1.5rem;
        margin-bottom: 15px;
    }

    .subsection-title {
        font-size: 1.4rem;
    }

    .speaker-card {
        padding: 1.5rem;
    }

    .btn-back-to-top {
        width: 45px;
        height: 45px;
        bottom: 20px;
        right: 20px;
    }
}