:root {
    --forest-green: #264D3B;
    --sandstone-beige: #D5CBB2;
    --slate-blue: #4C5D73;
    --burnt-orange: #D97C41;
    --white: #ffffff;
    --light-gray: #f8f9fa;
}

body {
    font-family: 'Source Sans Pro', sans-serif;
    line-height: 1.6;
    color: var(--slate-blue);
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Playfair Display', serif;
    color: var(--forest-green);
}

/* Navigation */
.navbar {
    background-color: var(--forest-green) !important;
    padding: 1rem 0;
    box-shadow: 0 2px 10px rgba(38, 77, 59, 0.1);
}

.navbar-brand {
    font-family: 'Playfair Display', serif;
    font-weight: 700;
    font-size: 1.8rem;
    color: var(--white) !important;
}

.navbar-nav .nav-link {
    color: var(--white) !important;
    font-weight: 500;
    margin: 0 0.5rem;
    transition: color 0.3s ease;
}

.navbar-nav .nav-link:hover {
    color: var(--sandstone-beige) !important;
}

.dropdown-menu {
    background-color: var(--white);
    border: none;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.dropdown-item {
    color: var(--slate-blue);
    transition: background-color 0.3s ease;
}

.dropdown-item:hover {
    background-color: var(--sandstone-beige);
    color: var(--forest-green);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--slate-blue) 0%, var(--forest-green) 100%);
    color: var(--white);
    padding: 8rem 0 6rem;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="1" fill="rgba(255,255,255,0.05)"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    opacity: 0.3;
}

.hero-content {
    position: relative;
    z-index: 2;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--white);
}

.hero .lead {
    font-size: 1.3rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

/* Buttons */
.btn-primary {
    background-color: var(--burnt-orange);
    border-color: var(--burnt-orange);
    padding: 0.75rem 2rem;
    font-weight: 600;
    border-radius: 50px;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    background-color: #c26a35;
    border-color: #c26a35;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(217, 124, 65, 0.3);
}

.btn-outline-primary {
    color: var(--burnt-orange);
    border-color: var(--burnt-orange);
    padding: 0.75rem 2rem;
    font-weight: 600;
    border-radius: 50px;
}

.btn-outline-primary:hover {
    background-color: var(--burnt-orange);
    border-color: var(--burnt-orange);
}

/* Sections */
.section {
    padding: 5rem 0;
}

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

.section-title h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    position: relative;
}

.section-title h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background-color: var(--burnt-orange);
}

/* Cards */
.card {
    border: none;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
    overflow: hidden;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0,0,0,0.1);
}

.card-header {
    background-color: var(--forest-green);
    color: var(--white);
    border: none;
    padding: 1.5rem;
}

.card-body {
    padding: 2rem;
}

/* Research Pillars */
.pillar-card {
    background: var(--white);
    border-left: 4px solid var(--burnt-orange);
    margin-bottom: 1.5rem;
}

.pillar-card:hover {
    border-left-color: var(--forest-green);
}

/* News & Events */
.news-item, .event-item {
    border-bottom: 1px solid var(--sandstone-beige);
    padding: 1.5rem 0;
}

.news-item:last-child, .event-item:last-child {
    border-bottom: none;
}

.news-date, .event-date {
    color: var(--burnt-orange);
    font-weight: 600;
    font-size: 0.9rem;
}

/* Footer */
.footer {
    background-color: var(--forest-green);
    color: var(--white);
    padding: 3rem 0 1rem;
}

.footer h5 {
    color: var(--sandstone-beige);
    margin-bottom: 1rem;
}

.footer a {
    color: var(--white);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer a:hover {
    color: var(--sandstone-beige);
}

.social-links a {
    display: inline-block;
    margin: 0 0.5rem;
    padding: 0.5rem;
    background-color: rgba(255,255,255,0.1);
    border-radius: 50%;
    transition: all 0.3s ease;
}

.social-links a:hover {
    background-color: var(--burnt-orange);
    transform: translateY(-2px);
}



/* Custom animations */
.fade-in {
    animation: fadeIn 0.8s ease-in;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero .lead {
        font-size: 1.1rem;
    }
    
    .section {
        padding: 3rem 0;
    }
}