:root {
    --primary-color: #0056b3;
    --secondary-color: #333;
    --bg-light: #f9f9f9;
    --text-color: #444;
    --accent-color: #e74c3c;
    --nav-bg: #2c3e50;
}
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0; padding: 0; color: var(--text-color); line-height: 1.6;
    display: flex; flex-direction: column; min-height: 100vh;
}

/* --- NAVIGATION BAR (Now at Top) --- */
nav {
    background: var(--nav-bg);
    position: sticky;
    top: 0;
    z-index: 2000; /* Higher than everything else */
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
    padding: 0 20px;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: center; /* Centered on Desktop */
    align-items: center;
}

/* Mobile Brand (Hidden on Desktop) */
.mobile-brand {
    display: none;
    color: white;
    font-weight: bold;
    font-size: 1.2rem;
    flex-grow: 1;
}

/* Mobile Toggle Icon (Hidden on Desktop) */
.menu-toggle {
    display: none;
    color: white;
    font-size: 1.8rem;
    cursor: pointer;
    padding: 10px 0;
}

nav ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-wrap: wrap;
}

nav ul li { position: relative; }

nav ul li a {
    display: block;
    padding: 15px 25px;
    color: white;
    text-decoration: none;
    font-weight: 600;
    transition: background 0.3s;
    text-transform: uppercase;
    font-size: 0.9rem;
}

nav ul li a:hover, nav ul li a.active {
    background: #34495e;
    border-bottom: 4px solid var(--accent-color);
}

/* Dropdown Menu (Desktop) */
.dropdown-content {
    display: none;
    position: absolute;
    background-color: var(--nav-bg);
    min-width: 220px;
    box-shadow: 0 8px 16px rgba(0,0,0,0.2);
    z-index: 2001;
    top: 100%;
    left: 0;
}
.dropdown-content li { width: 100%; }
.dropdown-content li a {
    padding: 12px 20px;
    text-transform: none;
    border-bottom: 1px solid #34495e;
    font-size: 0.95rem;
}
/* Show dropdown on hover (Desktop) */
nav ul li:hover .dropdown-content { display: block; }


/* --- HEADER (Banner) --- */
header {
    background-color: var(--primary-color);
    color: white;
    padding: 4rem 0;
    text-align: center;
    background-image: linear-gradient(rgba(0, 40, 85, 0.7), rgba(0, 40, 85, 0.8)), url('banner.jpg');
    background-size: cover;
    background-position: center;
}
header h1 { margin: 0; font-size: 3rem; letter-spacing: 1px; text-shadow: 2px 2px 4px rgba(0,0,0,0.5); }
header h2 { margin: 10px 0 0; font-weight: 400; font-size: 1.5rem; opacity: 0.95; text-shadow: 1px 1px 3px rgba(0,0,0,0.5); }


/* --- LAYOUT & CONTENT --- */
.container { display: flex; flex-wrap: wrap; max-width: 1200px; margin: 40px auto; padding: 0 20px; gap: 40px; flex: 1; }
.main-content { flex: 3; min-width: 60%; }
.sidebar { flex: 1; min-width: 250px; }
h2.section-title { color: var(--primary-color); border-bottom: 2px solid #eee; padding-bottom: 10px; margin-top: 0; }
h3 { color: var(--secondary-color); margin-top: 25px; }
ul.topic-list { padding-left: 20px; margin-bottom: 20px; }
ul.topic-list li { margin-bottom: 8px; }
.sidebar-box { background: var(--bg-light); padding: 25px; border-radius: 8px; border: 1px solid #eee; margin-bottom: 30px; }
.sidebar-box h3 { color: var(--primary-color); margin-top: 0; border-bottom: 1px solid #ddd; padding-bottom: 10px; }
.date-item { margin-bottom: 15px; display: flex; justify-content: space-between; }
.date-value { color: var(--accent-color); font-weight: 700; }
footer { background: #2c3e50; color: #ccc; text-align: center; padding: 30px 20px; margin-top: auto; }

/* ORGANIZER LOGOS */
.organizer-section { margin-top: 40px; border-top: 2px solid #eee; padding-top: 20px; }
.organizer-logos { display: flex; gap: 30px; align-items: center; flex-wrap: wrap; }
.organizer-logo-link { display: block; border: 1px solid #ddd; padding: 10px; border-radius: 5px; transition: transform 0.2s; background: white; }
.organizer-logo-link:hover { transform: scale(1.05); border-color: var(--primary-color); }
.organizer-img { height: 60px; width: auto; display: block; }

/* COMMITTEE MEMBER STYLES */
.committee-group { margin-bottom: 40px; }
.committee-role-title { 
    font-size: 1.3rem; font-weight: bold; color: var(--secondary-color); 
    border-left: 5px solid var(--primary-color); padding-left: 15px; margin-bottom: 20px; background: #f0f4f8; padding: 10px 15px;
}
.member-grid { display: flex; flex-wrap: wrap; gap: 25px; }
.member-card { 
    display: flex; align-items: center; gap: 20px; width: 100%; max-width: 480px; 
    background: white; border: 1px solid #eee; padding: 20px; border-radius: 8px; 
    box-shadow: 0 2px 5px rgba(0,0,0,0.05); transition: transform 0.2s;
}
.member-card:hover { transform: translateY(-3px); box-shadow: 0 5px 15px rgba(0,0,0,0.1); border-color: var(--primary-color); }
.member-photo { 
    width: 90px; height: 90px; border-radius: 50%; object-fit: cover; 
    border: 3px solid #eef; background-color: #ddd; flex-shrink: 0;
}
.member-info { display: flex; flex-direction: column; }
.member-name { font-size: 1.15rem; font-weight: bold; color: var(--primary-color); text-decoration: none; margin-bottom: 5px; }
.member-name:hover { text-decoration: underline; }
.member-affil { font-size: 0.95rem; color: #555; font-style: italic; }


/* --- MOBILE RESPONSIVE STYLES --- */
@media (max-width: 768px) {
    .nav-container {
        justify-content: space-between;
        align-items: center;
    }
    .mobile-brand { display: block; }
    .menu-toggle { display: block; }

    /* Hide the menu by default on mobile */
    nav ul {
        display: none;
        flex-direction: column;
        width: 100%;
        position: absolute;
        top: 100%; /* Puts it right below the nav bar */
        left: 0;
        background: var(--nav-bg);
        box-shadow: 0 5px 10px rgba(0,0,0,0.2);
    }

    /* Class added via JS to show menu */
    nav ul.show-menu { display: flex; }

    nav ul li { width: 100%; text-align: left; }
    nav ul li a { border-bottom: 1px solid #3a5065; padding: 15px 20px; }

    /* Mobile Dropdown Behavior */
    nav ul li:hover .dropdown-content {
        position: static; /* Stacks vertically instead of floating */
        display: block;
        box-shadow: none;
        background: #243342; /* Slightly darker */
        padding-left: 20px; /* Indent sub-items */
    }
    
    /* Header Text adjustments for mobile */
    header h1 { font-size: 2rem; }
    header h2 { font-size: 1.2rem; }
    
    .container { flex-direction: column; }
    .sidebar { order: 1; /* Sidebar comes after content on mobile */ }
}