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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: transparent;;
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: white;
    font-weight: bold;
    font-size: 1.25rem;
    cursor: pointer;
}

.logo img {
    width: 210px;
    height: 60px;
}

.nav-links {
    display: none;
    list-style: none;
    gap: 2rem;
}

@media (min-width: 768px) {
    .nav-links {
        display: flex;
    }
}

.nav-links a {
    color: white;
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: #ec4899;
}

.btn-primary {
    background: #2068B3;
    color: white;
    border: none;
    text-decoration: none;
    padding: 0.25rem 1.25rem;
    border-radius: 9999px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s;
}

.btn-primary:hover {
    background: #7e22ce;
}
.submenu {
    display: none;
    position: absolute;
    background: white;
    list-style: none;
    margin: 0;
    padding: 8px 0;
    box-shadow: 0 3px 10px rgba(0,0,0,0.15);
    border-radius: 6px;
    min-width: 180px;
    z-index: 1000;
}

li:hover > .submenu {
    display: block;
}
.submenu li a {
    display: block;
    padding: 10px 15px;
    color: #333;
    text-decoration: none;
    font-size: 14px;
    white-space: nowrap;
}

.submenu li a:hover {
    background: #f0f0f0;
    color: #000;
}




/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    background: linear-gradient(0deg, #2068B3, #A2BABC);
    padding-top: 100px;
    overflow: hidden;
}


.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url('https://image-static.collegedunia.com/public/college_data/images/campusimage/1624441644Campus%20Image.jpg') center/cover;
    opacity: 0.3;
    z-index: 1;
}

.hero .container {
    position: relative;
    z-index: 2;
    display: flex;
    align-items: center;
    min-height: calc(100vh - 100px);
}

.hero-content {
    color: white;
}

.hero-content h1 {
    font-size: clamp(3rem, 4vw, 6rem);
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: 2rem;
}

.hero-content .year {
    color: #e0fbff;
    font-size: clamp(2rem, 8vw, 5rem);
}

.hero-info {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 2rem;
}

.info-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.5rem;
}

.info-item svg {
    width: 30px;
    height: 30px;
}

.btn-outline{
    border: 2px solid white;
    background: transparent;
    color: white;
    padding: 0.75rem 2rem;
    border-radius: 9999px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-outline:hover {
    background: white;
    color: #581c87;
}

/* Announcement Section */
.announcement {
    background: white;
    padding: 4rem 0;
    text-align: center;
}

.announcement h3 {
    font-size: 2rem;
    margin-bottom: 3rem;
    line-height: 1.3;
}

.announcement span {
    color: #9333ea;
}

.organizers{
    display: flex;
    gap: 20px;
}

.organizer{
    display: flex;
    /* background-color: #7e22ce; */
    align-items: center;
    justify-content: center;
    flex-grow: 1;
}
.organizer img{
    width: 150px;
    height: 150px;
}
.organizer h2{
    flex-grow: 1;   
}
.container2{
    display: flex;
    align-items: center;
    justify-content: center;
}
.seperator{
    width: 1px;
    background-color: #000;
}

@media (max-width: 768px) {
    .organizers {
        display: flex;
        flex-direction: column;
    }
}

.stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.stat-item {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 900;
    color: #333;
    line-height: 1;
}

.stat-label {
    display: block;
    font-size: 0.75rem;
    color: #999;
    margin-top: 0.5rem;
    letter-spacing: 1px;
}

.stat-divider {
    font-size: 2rem;
    color: #ddd;
    margin: 0 0.5rem;
}

/* About Section */
.welcome {
    background: #f9fafb;
    padding: 2rem 0;
}

.welcome .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

@media (max-width: 768px) {
    .welcome .container {
        grid-template-columns: 1fr;
    }
}

.welcome-images {
    position: relative;
}

.image-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    padding-top: 1rem;
}

.image-grid img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 0.5rem;
}

.welcome-badge {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: white;
    border-radius: 50%;
    width: 120px;
    height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
    z-index: 10;
}

.badge-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.badge-number {
    font-size: 1.5rem;
    font-weight: 900;
    color: #9333ea;
}

.badge-text {
    font-size: 0.75rem;
    color: #666;
    letter-spacing: 1px;
}

.welcome-text h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    line-height: 1.3;
    font-size: clamp(1rem, 3vw, 1.5rem);
}

.welcome-text p {
    color: #666;
    margin-bottom: 2rem;
    line-height: 1.8;
}

.features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 2rem;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: #333;
}

.feature-item svg {
    color: #ec4899;
    flex-shrink: 0;
}

.btn-outline-1 {
    border: 2px solid #ec4899;
    background: transparent;
    color: #ec4899;
    padding: 0.75rem 2rem;
    border-radius: 9999px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-outline-1:hover {
    background: white;
    color: #581c87;
}

/* Schedule Section */
.schedule {
    background: white;
    padding: 5rem 0;
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-subtitle {
    color: #9240df;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.schedule h2 {
    font-size: 2.5rem;
    line-height: 1.3;
}

.schedule-tabs {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.tab-btn {
    background: #f3f4f6;
    border: none;
    padding: 1rem 2rem;
    border-radius: 0.5rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.tab-btn:hover {
    background: #e5e7eb;
}

.tab-btn.active {
    background: #9333ea;
    color: white;
}

.tab-btn span {
    display: block;
    font-size: 0.75rem;
    font-weight: 400;
    margin-top: 0.25rem;
}

.schedule-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.schedule-card {
    background: white;
    border-radius: 0.75rem;
    overflow: hidden;
    transition: all 0.3s;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

.schedule-card:hover {
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
}

.schedule-card img {
    width: 100%;
    height: 150px;
    object-fit: cover;
}

.schedule-content {
    padding: 1.5rem;
}

.schedule-content h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.schedule-content p {
    color: #666;
    font-size: 0.875rem;
    margin-bottom: 1rem;
}

.schedule-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.schedule-meta span {
    color: #666;
    font-size: 0.875rem;
}

/* Speakers Section */
.speakers {
    background: linear-gradient(0deg, #4c7fb5, #A2BABC);
    padding: 3rem 0;
}

.speakers h2 {
    font-size: 2.5rem;
    text-align: center;
    color: white;
    margin-bottom: 4rem;
}

.speakers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 2rem;
}

.dualSections{
    display: flex;
    justify-content: space-evenly;
}

@media (max-width: 768px) {
    .dualSections{
        display: block;
    }
}

.speaker-card {
    text-align: center;
}

.speaker-card img {
    width: 140px;
    height: 140px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid white;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    margin: 0 auto 1rem;
    transition: transform 0.3s;
}

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

.speaker-card h4 {
    color: white;
    font-size: 1.125rem;
    margin-bottom: 0.25rem;
}

.speaker-card p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.875rem;
}

/* Sponsors Section */
.sponsors {
    background: #f9fafb;
    padding: 3rem 0;
}

.sponsors h2 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 3rem;
}

.sponsors-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1.5rem;
}

.sponsor-logo {
    background: white;
    border-radius: 0.5rem;
    padding: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    color: #666;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    transition: all 0.3s;
}

.sponsor-logo:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

/* Gallery Section */
.gallery {
    background: white;
    padding: 3rem 0;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
}

.gallery-grid img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    border-radius: 0.5rem;
    transition: transform 0.3s;
}

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

/* Footer */
.footer {
    background: linear-gradient(0deg, #2068B3, #349ea7);
    color: white;
    padding: 3rem 0 1.5rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    margin-bottom: 2rem;
}

@media (max-width: 768px) {
    .footer-content {
        grid-template-columns: 1fr;
    }
}

.footer-col h4 {
    font-size: 1.125rem;
    margin-bottom: 1rem;
}

.footer-col p {
    color: rgba(255, 255, 255, 0.7);
}

.footer .logo {
    color: white;
    margin-bottom: 1rem;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 1.5rem;
    text-align: center;
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.875rem;
}

/* Responsive */
@media (max-width: 768px) {
    .hero-content h1 {
        font-size: 2rem;
    }

    .hero-content .year {
        font-size: 1.5rem;
    }

    .schedule h2,
    .welcome-text h2,
    .speakers h2,
    .tickets h2,
    .sponsors h2 {
        font-size: 1.5rem;
    }

    .features {
        grid-template-columns: 1fr;
    }
}

/* ===== Conference Tracks Table ===== */
.tracks-table-wrapper {
    margin-top: 4rem;
    text-align: center;
}

.tracks-title {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    color: #333;
}

.tracks-table {
    width: 100%;
    max-width: 800px;
    margin: 0 auto;
    border-collapse: collapse;
    background: white;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
    border-radius: 0.75rem;
    overflow: hidden;
}

.tracks-table th,
.tracks-table td {
    padding: 14px 18px;
    border-bottom: 1px solid #e5e7eb;
    text-align: left;
    font-size: 1rem;
}

.tracks-table th {
    background: #40a6d8;
    color: white;
    font-weight: 600;
}

.tracks-table tbody tr:hover {
    background: #f9fafb;
}

.tracks-table td:first-child {
    font-weight: 600;
    color: #581c87;
    width: 120px;
}