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

body {
    font-family: "Inter", sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

/* Navbar Styles */
.navbar {
    background-color: white;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
}

.logo img {
    height: 40px;
    width: auto;
}

.nav-menu {
    flex-grow: 1;
    margin: 0 20px;
}

.nav-links {
    display: flex;
    list-style: none;
    justify-content: center;
}

.nav-links li {
    position: relative;
    margin: 0 15px;
}

.nav-links a {
    color: #333;
    text-decoration: none;
    font-weight: 500;
    font-size: 14px;
    padding: 10px 0;
    display: block;
    transition: color 0.3s ease;
}

.nav-links a:hover,
.nav-links a.active {
    color: #3b5aab;
}

.nav-links a.active {
    border-bottom: 2px solid #3b5aab;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background-color: white;
    min-width: 180px;
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.1);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.3s ease;
    z-index: 1;
    border-radius: 4px;
    padding: 10px 0;
    list-style-type: none;
}

.dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu li {
    margin: 0;
}

.dropdown-menu a {
    padding: 8px 15px;
    font-size: 13px;
}

.dropdown-menu a:hover {
    background-color: #f5f5f5;
}

.fa-chevron-down {
    font-size: 10px;
    margin-left: 5px;
}

/* Social Icons */
.social-icons {
    display: flex;
    align-items: center;
}

.social-icons a {
    color: #3b5aab;
    margin-left: 15px;
    font-size: 18px;
    transition: color 0.3s ease, transform 0.2s ease;
}

.social-icons a:hover {
    color: #1e3a8a;
    transform: translateY(-2px);
}

/* Mobile Toggle Button */
.mobile-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 21px;
    cursor: pointer;
}

.mobile-toggle .bar {
    height: 3px;
    width: 100%;
    background-color: #3b5aab;
    border-radius: 10px;
    transition: all 0.3s ease;
}

/* Event Page Header Styles */
.event-header {
    background-color: #004ce5;
    color: white;
    padding: 60px 0;
    text-align: center;
}

.event-header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 15px;
}

.event-header p {
    font-size: 1.1rem;
    max-width: 800px;
    margin: 0 auto;
    opacity: 0.9;
}

/* Event Content Section */
.event-content-section {
    padding: 70px 0;
}

.event-info {
    display: flex;
    margin-bottom: 60px;
    gap: 40px;
    align-items: center;
    justify-content: center;
    flex-direction: column-reverse;
}

.event-text {
    flex: 1.5;
}

.event-text.full-width {
    flex: 1;
}

.event-image {
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    width: 100%;
}

.event-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.event-section-subtitle {
    color: #004ce5;
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 15px;
    position: relative;
    display: inline-block;
    padding-left: 15px;
}

.event-section-subtitle::before {
    content: "";
    position: absolute;
    left: 0;
    top: 50%;
    width: 5px;
    height: 25px;
    background-color: #004ce5;
    transform: translateY(-50%);
}

.event-section-title {
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 20px;
    color: #222;
}

.event-details {
    display: flex;
    gap: 2rem;
    align-items: flex-start;
    flex-wrap: wrap;
}

.detail {
    display: flex;
    align-items: center;
    gap: 15px;
    color: #004ce5;
    font-weight: 400;
    line-height: 29px;
    font-size: 0.9rem;
}

.detail .icon {
    width: 28px;
    height: 28px;
}

.event-text p {
    color: #555;
    margin-bottom: 20px;
    line-height: 1.8;
    margin-top: 47px;
}

.register-btn {
    display: inline-flex;
    align-items: center;
    background-color: #cccccc;
    color: #666666;
    text-decoration: none;
    padding: 12px 30px;
    border-radius: 50px;
    font-weight: 500;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(204, 204, 204, 0.2);
    cursor: not-allowed;
}

.register-btn i {
    margin-left: 10px;
    transition: transform 0.3s ease;
}

.register-btn:hover {
    background-color: #cccccc;
    transform: none;
    box-shadow: 0 4px 15px rgba(204, 204, 204, 0.2);
}

.register-btn:hover i {
    transform: none;
}

/* Event Image Collage for Student Symposium */
.event-image-collage {
    display: flex;
    gap: 15px;
    width: 100%;
    height: 400px;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    border-radius: 12px;
}

.main-image {
    flex: 2;
    height: 100%;
    overflow: hidden;
    border-radius: 12px 0 0 12px;
}

.main-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.side-images {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 15px;
    height: 100%;
}

.side-image {
    flex: 1;
    overflow: hidden;
    border-radius: 8px;
}

.side-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.side-image:first-child {
    border-radius: 8px 8px 8px 8px;
}

.side-image:last-child {
    border-radius: 8px 8px 8px 8px;
}

/* Responsive adjustments for collage */
@media (max-width: 768px) {
    .event-image-collage {
        flex-direction: column;
        height: auto;
        gap: 10px;
    }

    .main-image {
        height: 250px;
        border-radius: 12px;
    }

    .side-images {
        flex-direction: row;
        height: 150px;
        gap: 10px;
    }

    .side-image {
        flex: 1;
    }
}

@media (max-width: 576px) {
    .event-image-collage {
        height: auto;
    }

    .main-image {
        height: 200px;
    }

    .side-images {
        height: 120px;
    }
}

/* Footer Styles */
.footer {
    background-color: #f9fbff;
    padding-top: 70px;
    border-top: 1px solid #eaeef5;
}

.footer-content {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 40px;
    padding-bottom: 50px;
}

.footer-brand {
    flex: 1;
    min-width: 250px;
    max-width: 350px;
}

.footer-logo {
    width: 180px;
    margin-bottom: 20px;
}

.footer-tagline {
    color: #3b5aab;
    font-weight: 600;
    margin-bottom: 25px;
    line-height: 1.5;
}

.footer-social p {
    color: #555;
    margin-bottom: 10px;
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-links a {
    color: #3b5aab;
    font-size: 18px;
    transition: color 0.3s ease, transform 0.2s ease;
}

.social-links a:hover {
    color: #004ce5;
    transform: translateY(-2px);
}

.footer-links {
    flex: 1;
    min-width: 200px;
}

.footer-links h3,
.footer-newsletter h3 {
    color: #222;
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 25px;
    position: relative;
}

.footer-links h3::after,
.footer-newsletter h3::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -10px;
    width: 40px;
    height: 3px;
    background-color: #004ce5;
}

.footer-links ul {
    list-style: none;
}

.footer-links li {
    margin-bottom: 15px;
}

.footer-links a {
    color: #555;
    text-decoration: none;
    transition: color 0.3s ease, padding-left 0.3s ease;
    display: inline-block;
}

.footer-links a:hover {
    color: #004ce5;
    padding-left: 5px;
}

.footer-newsletter {
    flex: 1.5;
    min-width: 300px;
}

.footer-newsletter p {
    color: #555;
    margin-bottom: 20px;
    line-height: 1.6;
}

.newsletter-form {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.newsletter-form input {
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 30px;
    font-family: "Inter", sans-serif;
    font-size: 0.95rem;
    outline: none;
    transition: border-color 0.3s ease;
}

.newsletter-form input:focus {
    border-color: #004ce5;
}

.subscribe-btn {
    background-color: #004ce5;
    color: white;
    border: none;
    padding: 12px 20px;
    border-radius: 50px;
    font-family: "Inter", sans-serif;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.3s ease, transform 0.2s ease;
}

.subscribe-btn:hover {
    background-color: #003bb2;
    transform: translateY(-2px);
}

.footer-bottom {
    background-color: #f0f5ff;
    padding: 20px 0;
    text-align: center;
    color: #555;
    font-size: 0.9rem;
}

/* Responsive Styles */
@media (max-width: 992px) {
    .nav-links li {
        margin: 0 10px;
    }

    .nav-links a {
        font-size: 13px;
    }

    .social-icons a {
        font-size: 16px;
        margin-left: 10px;
    }

    .about-info {
        gap: 30px;
    }

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

    .about-header h1 {
        font-size: 2.2rem;
    }
}

@media (max-width: 768px) {
    /* Navbar Mobile Styles */
    .navbar-content {
        flex-wrap: wrap;
    }

    .logo {
        order: 1;
    }

    .mobile-toggle {
        display: flex;
        order: 3;
    }

    .nav-menu {
        order: 4;
        flex-basis: 100%;
        margin: 0;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.5s ease;
    }

    .nav-menu.active {
        max-height: 1000px;
        margin-top: 15px;
        overflow-y: auto;
    }

    .nav-links {
        flex-direction: column;
        align-items: flex-start;
    }

    .nav-links li {
        margin: 0;
        width: 100%;
        border-bottom: 1px solid #eee;
    }

    .nav-links a {
        padding: 12px 0;
    }

    .dropdown-menu {
        position: static;
        box-shadow: none;
        opacity: 1;
        visibility: visible;
        transform: none;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease, padding 0.3s ease;
        padding: 0;
    }

    .show-dropdown .dropdown-menu {
        max-height: 500px;
        padding: 5px 0;
    }

    .dropdown-menu a {
        padding-left: 20px;
    }

    .social-icons {
        order: 2;
        margin-left: auto;
    }

    .mobile-toggle.active .bar:nth-child(1) {
        transform: translateY(9px) rotate(45deg);
    }

    .mobile-toggle.active .bar:nth-child(2) {
        opacity: 0;
    }

    .mobile-toggle.active .bar:nth-child(3) {
        transform: translateY(-9px) rotate(-45deg);
    }

    /* About Page Mobile Styles */
    .about-header {
        padding: 40px 0;
    }

    .about-header h1 {
        font-size: 2rem;
    }

    .about-header p {
        font-size: 1rem;
    }

    .about-content-section {
        padding: 50px 0;
    }

    .about-info {
        flex-direction: column;
        gap: 30px;
    }

    /* .about-image {
        max-width: 100%;
    } */

    .section-title {
        font-size: 1.6rem;
    }

    .annual-meeting-title {
        font-size: 1.5rem;
    }

    /* Footer Mobile Styles */
    .footer {
        padding-top: 50px;
    }

    .footer-content {
        flex-direction: column;
        gap: 40px;
    }

    .footer-brand,
    .footer-links,
    .footer-newsletter {
        max-width: 100%;
    }

    .footer-bottom {
        padding: 15px 0;
    }
}

@media (max-width: 576px) {
    .social-icons {
        display: none;
    }

    .navbar-content {
        justify-content: space-between;
    }

    .about-header h1 {
        font-size: 1.8rem;
    }

    .about-header p {
        font-size: 0.9rem;
    }

    .section-subtitle {
        font-size: 0.9rem;
    }

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

    .about-text p {
        font-size: 0.95rem;
    }

    .annual-meeting-title {
        font-size: 1.3rem;
    }
}