:root {
    --primary-color: #009639;
    --secondary-color: #FFF;
    --background-color: #1e1e1e;
    --text-color: #FFF;
    --accent-color: #07A33A;
    --hover-color: #07A33A;
}

body {
    margin: 0;
    font-family: 'Arial', sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
}
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 60px;
    background-color: rgba(30, 30, 30, 0.8);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 4%;
    z-index: 1000;
}
.logo {
    font-weight: bold;
    font-size: 20px;
    color: var(--text-color);
}
@media (max-width: 768px) {
    .logo {
        display: none;
    }
}
.nav {
    display: flex;
    height: 100%;
    position: fixed;
    right: 10px;
}
.nav-item {
    position: relative;
    display: flex;
    align-items: center;
    padding: 0 20px;
    color: var(--text-color);
    text-decoration: none;
    font-size: 16px;
    transition: color 0.3s;
}
.nav-item:hover {
    color: var(--hover-color);
}
.nav-item.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background-color: var(--hover-color);
}
@media (max-width: 768px) {
    .nav {
        justify-content: space-around;
        width: 100%;
        left: 5px;
    }
    .nav-item {
        align-items: center;
        padding: 2px;
    }
    .nav-item i {
        font-size: 20px;
        margin-bottom: 5px;
    }
    .nav-text {
        display: none;
    }
}
.content {
    margin-top: 20px;
    padding: 30px 5%;
}
.section {
    margin-bottom: 80px;
}
h1 {
    font-size: 3em;
    margin-bottom: 30px;
    color: var(--primary-color);
}
h2 {
    font-size: 2.2em;
    margin-bottom: 20px;
    color: var(--primary-color);
}
p {
    font-size: 1.1em;
    margin-bottom: 20px;
    max-width: 800px;
}
@media (max-width: 768px) {
    h1 {
        font-size: 2.2em;
        margin-bottom: 30px;
        color: var(--primary-color);
    }
    h2 {
        font-size: 1.8em;
        margin-bottom: 20px;
        color: var(--primary-color);
    }
    p {
        font-size: 1em;
        margin-bottom: 20px;
        max-width: 800px;
    }
}
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}
.grid-item {
    background-color: rgba(255, 255, 255, 0.05);
    padding: 30px;
    border-radius: 10px;
    transition: transform 0.3s, box-shadow 0.3s;
}
.grid-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(229, 198, 255, 0.2);
}
.grid-item h3 {
    font-size: 1.5em;
    margin-bottom: 15px;
    color: var(--accent-color);
}
@media (max-width: 768px) {
    .grid-item h3 {
        font-size: 1.3em;
        margin-bottom: 15px;
        color: var(--accent-color);
    }
}
.location-image {
    width: 100%;
    height: auto;
    max-width: 600px;
    border-radius: 10px;
    margin-top: 30px;
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
}
.gallery-content {
    margin-top: 90px;
}
.gallery {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 15px;
    padding: 20px;
}
.gallery-item {
    position: relative;
    overflow: hidden;
    border-radius: 4px;
    aspect-ratio: 16 / 9;
    cursor: pointer;
    transition: transform 0.3s ease;
}
.gallery-item:hover {
    transform: scale(1.05);
}
.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}
@media (max-width: 1024px) {
    .gallery-content {
        margin-top: 80px;
    }
    .gallery {
        grid-template-columns: repeat(3, 1fr);
        gap: 15px;
        padding: 20px;
    }
}
@media (max-width: 768px) {
    .gallery-content {
        margin-top: 80px;
    }
    .gallery {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
        padding: 20px;
    }
}
@media (max-width: 480px) {
    .gallery {
        grid-template-columns: 1fr;
    }
}
.like-button {
    position: absolute;
    bottom: 15px;
    right: 15px;
    background-color: rgba(0, 0, 0, 0.6);
    color: white;
    padding: 8px 15px;
    border-radius: 25px;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
}
.like-button:hover {
    background-color: rgba(0, 0, 0, 0.8);
    transform: scale(1.1);
}
.like-button.liked {
    color: #ff4136;
}
.like-button i {
    margin-right: 8px;
    font-size: 18px;
}
@media (max-width: 768px) {
    .like-button {
        bottom: 10px;
        right: 10px;
        padding: 6px 12px;
        font-size: 14px;
    }
    .like-button i {
        font-size: 16px;
    }
}
.speakers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
    margin-top: 50px;
}
.speaker-card {
    background-color: rgba(255, 255, 255, 0.05);
    border-radius: 15px;
    overflow: hidden;
    transition: transform 0.3s, box-shadow 0.3s;
}
.speaker-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 20px rgba(229, 198, 255, 0.2);
}
.speaker-image {
    width: 100%;
    height: 300px;
    object-fit: cover;
}
.speaker-info {
    padding: 20px;
}
.speaker-name {
    font-size: 1.5em;
    color: var(--accent-color);
    margin-bottom: 10px;
}
.speaker-title {
    font-size: 1em;
    color: var(--secondary-color);
    margin-bottom: 15px;
    font-style: italic;
}
.speaker-bio {
    font-size: 0.9em;
    color: var(--text-color);
}
.schedule {
    margin-top: 50px;
    display: flex;
    flex-direction: column;
    gap: 30px;
}
.day {
    background-color: rgba(255, 255, 255, 0.05);
    border-radius: 15px;
    padding: 0 30px 5px 30px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}
.day-title {
    font-size: 1.8em;
    color: var(--primary-color);
    margin-bottom: 20px;
    border-bottom: 2px solid var(--primary-color);
    padding-bottom: 10px;
}
.session {
    margin-bottom: 25px;
    padding: 20px;
    position: relative;
    background-color: rgba(255, 255, 255, 0.03);
    border-radius: 10px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.session:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(229, 198, 255, 0.2);
}
.session-time {
    font-weight: bold;
    color: var(--secondary-color);
    margin-bottom: 5px;
}
.session-title {
    font-size: 1.2em;
    margin: 10px 0;
    color: var(--accent-color);
}
.session-speaker {
    font-style: italic;
    color: var(--secondary-color);
    margin-top: 5px;
}
.loading-indicator {
    display: none;
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    padding: 20px;
    border-radius: 10px;
    text-align: center;
    z-index: 1000;
}
.loading-indicator i {
    font-size: 48px;
    margin-bottom: 10px;
}
.organizer {
    width: auto;
    text-align: center;
}
.organizer img {
    align-content: center;
    width: 200px;
    height: 200px;
    border-radius: 50%;
    object-fit: cover;
    margin-bottom: 15px;
}
.organizer p {
    font-size: 0.9em;
}
.filter-dropdown {
    position: fixed;
    top: 65px; /* Position it right below the header */
    right: 20px;
    z-index: 1000;
    backdrop-filter: blur(8px);
    border-bottom-left-radius: 4px;
    border-bottom-right-radius: 4px;
}
.filter-button {
    background-color: transparent;
    color: #ffffff;
    border: none;
    padding: 10px 15px;
    font-size: 14px;
    cursor: pointer;
    display: flex;
    align-items: center;
}
.filter-button i {
    margin-left: 5px;
}
.filter-options {
    display: none;
    position: absolute;
    right: 0;
    top: 100%;
    background-color: #ffffff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    border-radius: 4px;
    overflow: hidden;
    min-width: 200px;
}
.filter-options a {
    display: block;
    padding: 10px 15px;
    color: #333333;
    text-decoration: none;
    transition: background-color 0.3s;
}
.filter-options a:hover {
    background-color: #f0f0f0;
}
.filter-dropdown:hover .filter-options {
    display: block;
}
.delete-button {
    position: absolute;
    top: 10px;
    right: 10px;
    background-color: rgba(255, 0, 0, 0.7);
    color: white;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 14px;
    transition: background-color 0.3s ease;
}
.delete-button:hover {
    background-color: rgba(255, 0, 0, 0.9);
}