body { margin: 0; font-family: 'Segoe UI', sans-serif; background: #f0f2f5; }
.layout { display: flex; }

.sidebar {
    width: 260px;
    height: 100vh;
    background: #1a2f1b;
    color: white;
    position: fixed;
    padding: 20px 0;
}

.sidebar-header { text-align: center; padding-bottom: 20px; border-bottom: 1px solid #34495e; }

.nav-menu { list-style: none; padding: 0; margin-top: 20px; }

.nav-btn, .dropbtn {
    width: 100%;
    padding: 12px 20px;
    background: none;
    border: none;
    color: #ecf0f1;
    text-align: left;
    font-size: 15px;
    cursor: pointer;
    display: block;
    text-decoration: none;
}

.dropdown { position: relative; }
.dropdown-content {
    display: none;
    background: #2c3e50;
    padding-left: 10px;
}

.dropdown:hover .dropdown-content {
    display: block;
}

.dropdown-content a {
    color: #bdc3c7;
    padding: 10px 20px;
    display: block;
    text-decoration: none;
    font-size: 13px;
}

.dropdown-content a:hover { background: #3498db; color: white; }

.main-content { margin-left: 260px; padding: 40px; width: 100%; }

.hero-card {
    background: white;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    text-align: center;
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-top: 30px;
}

.member img {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    border: 3px solid #34db63;
    object-fit: cover;
}
.sidebar {
    width: 260px;
    height: 100vh;
    position: fixed;
    background: #1a252f;
    color: white;
    
    overflow-y: auto;  
    overflow-x: hidden; 
}
:root {
    --primary: #1e293b;
    --accent: #3b82f6;
    --text-main: #334155;
    --bg-body: #f8fafc;
    --white: #ffffff;
}

body {
    margin: 0;
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-body);
    color: var(--text-main);
}

.layout { display: flex; }
.sidebar {
    width: 280px;
    height: 100vh;
    background: var(--primary);
    color: white;
    position: fixed;
    overflow-y: auto;
    transition: all 0.3s;
}

.sidebar-header {
    padding: 30px 20px;
    text-align: center;
    background: #0f172a;
}

.logo-placeholder {
    font-size: 24px;
    font-weight: bold;
    color: var(--accent);
    letter-spacing: 2px;
}
.nav-menu { list-style: none; padding: 0; margin: 0; }

.dropbtn, .nav-btn {
    width: 100%;
    padding: 15px 20px;
    background: none;
    border: none;
    color: #94a3b8;
    text-align: left;
    cursor: pointer;
    font-size: 14px;
    border-bottom: 1px solid #334155;
    transition: 0.3s;
}

.dropdown:hover .dropbtn { color: white; background: #334155; }

.dropdown-content {
    display: none;
    background: #0f172a;
}

.dropdown:hover .dropdown-content { display: block; }

.dropdown-content a {
    color: #94a3b8;
    padding: 10px 30px;
    display: block;
    text-decoration: none;
    font-size: 13px;
}

.dropdown-content a:hover { color: var(--accent); background: #1e293b; }
.main-content {
    margin-left: 280px;
    padding: 40px;
    width: 100%;
}

.content-header { margin-bottom: 30px; border-bottom: 2px solid #e2e8f0; padding-bottom: 20px; }

.research-card {
    background: var(--white);
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 4px 6px -1px rgba(0,0,0,0.1);
    line-height: 1.8;
}

.highlight-text {
    font-size: 1.2em;
    color: var(--primary);
    border-left: 4px solid var(--accent);
    padding-left: 20px;
    margin: 20px 0;
}
.impact-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-top: 30px;
}

.card {
    background: #f1f5f9;
    padding: 20px;
    border-radius: 8px;
    text-align: center;
    transition: 0.3s;
}
.card:hover { transform: translateY(-5px); background: #e2e8f0; }

.icon { font-size: 30px; margin-bottom: 10px; }