@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;600;700&display=swap');

:root {
    /* Color Palette */
    --primary: #1E4D6B; /* River Blue */
    --primary-light: #2C6E97;
    --secondary: #2D5A27; /* Darker Brand Green */
    --secondary-light: #4CAF50;
    --accent: #8D6E63; /* Earth Clay */
    --bg-sand: #F5F1E9;
    --white: #FFFFFF;
    --dark: #2C3E50;
    --text-main: #455A64;
    --text-muted: #78909C;
    
    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 2rem;
    --space-lg: 4rem;
    --space-xl: 8rem;
    
    /* Transitions */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
    --shadow-lg: 0 10px 30px rgba(0,0,0,0.1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    line-height: 1.6;
    color: var(--text-main);
    background-color: var(--bg-sand);
    overflow-x: hidden;
}

h1, h2, h3, h4, .font-heading {
    font-family: 'Outfit', sans-serif;
    color: var(--primary);
    font-weight: 700;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

/* --- Navigation --- */
header {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

header.scrolled {
    padding: 0.5rem 0;
    background: var(--white);
    box-shadow: var(--shadow-md);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo img {
    height: 45px;
}

.logo-text h1 {
    font-size: 1.5rem;
    margin: 0;
    line-height: 1;
}

.logo-text span {
    font-size: 0.75rem;
    color: var(--secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.nav-links {
    display: flex;
    gap: 1.5rem;
}

.nav-item {
    position: relative;
    padding: 0.5rem 0;
}

.nav-link {
    font-weight: 500;
    font-size: 0.95rem;
}

.nav-link:hover, .nav-link.active {
    color: var(--secondary);
}

/* Dropdown styling */
.has-dropdown:hover .dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--white);
    min-width: 200px;
    box-shadow: var(--shadow-lg);
    border-radius: 8px;
    padding: 1rem 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: var(--transition);
}

.dropdown-item {
    padding: 0.5rem 1.5rem;
    display: block;
    font-size: 0.9rem;
    white-space: nowrap;
}

.dropdown-item:hover {
    background: rgba(46, 125, 50, 0.05);
    color: var(--secondary);
}

.btn-cta {
    background: var(--secondary);
    color: var(--white);
    padding: 0.75rem 1.5rem;
    border-radius: 50px;
    font-weight: 600;
    transition: var(--transition);
}

.btn-cta:hover {
    background: var(--primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    color: var(--white);
}

.mobile-menu-btn {
    display: none;
    font-size: 1.5rem;
    cursor: pointer;
}

/* --- Hero Section --- */
.hero {
    height: 90vh;
    background: linear-gradient(rgba(0,0,0,0.4), rgba(0,0,0,0.4)), url('../images/hero.png');
    background-size: cover;
    background-position: center;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--white);
}

.hero-content {
    max-width: 800px;
}

.hero-branding {
    font-size: 0.9rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--secondary-light);
    margin-bottom: 1rem;
    display: block;
    background: rgba(0,0,0,0.3);
    padding: 5px 15px;
    border-radius: 5px;
    width: fit-content;
    margin-left: auto;
    margin-right: auto;
}

.hero h1 {
    font-size: 3.5rem;
    color: var(--white);
    margin-bottom: 1.5rem;
    animation: fadeInUp 1s ease;
}

.hero p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    animation: fadeInUp 1s ease 0.2s both;
}

/* --- Sections --- */
section {
    padding: var(--space-lg) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-lg);
}

.section-header h2 {
    font-size: 2.5rem;
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 15px;
    padding-bottom: 1rem;
}

.section-header h2::before {
    content: '';
    display: inline-block;
    width: 40px;
    height: 40px;
    background: url('../images/logo.png') no-repeat center center;
    background-size: contain;
}

.section-header h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: var(--secondary);
    border-radius: 2px;
}

/* --- Cards --- */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-md);
}

.card {
    background: var(--white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.card-img {
    height: 200px;
    overflow: hidden;
}

.card-img img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.card-content {
    padding: var(--space-md);
}

.card-title {
    margin-bottom: 0.5rem;
}

.sdg-badge {
    display: inline-block;
    background: var(--primary);
    color: var(--white);
    font-size: 0.7rem;
    padding: 2px 8px;
    border-radius: 4px;
    margin-bottom: 0.75rem;
    font-weight: 600;
}

/* --- Impact Stats --- */
.stats-bg {
    background: var(--primary);
    color: var(--white);
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    color: var(--secondary-light);
    display: block;
}

.stat-label {
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 0.9rem;
}

/* --- Footer --- */
footer {
    background: #1a2a35;
    color: rgba(255,255,255,0.8);
    padding: var(--space-lg) 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--space-md);
    padding-bottom: var(--space-lg);
}

.footer-col h3 {
    color: var(--white);
    margin-bottom: 1.5rem;
    font-size: 1.25rem;
}

.footer-col ul li {
    margin-bottom: 0.75rem;
}

.footer-col ul li a:hover {
    color: var(--white);
    padding-left: 5px;
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
}

.social-icon {
    width: 35px;
    height: 35px;
    background: rgba(255,255,255,0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.social-icon:hover {
    background: var(--secondary);
    color: var(--white);
}

.footer-bottom {
    background: #0f1920;
    padding: 1.5rem 0;
    text-align: center;
    font-size: 0.85rem;
}

/* --- Animations --- */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* --- Mobile Drawer --- */
.mobile-drawer {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 300px;
    height: 100vh;
    background: var(--white);
    z-index: 2000;
    transition: var(--transition);
    padding: 2rem;
    box-shadow: -5px 0 15px rgba(0,0,0,0.1);
}

.mobile-drawer.active {
    right: 0;
}

.drawer-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.close-drawer {
    font-size: 2rem;
    cursor: pointer;
    color: var(--primary);
}

.mobile-links li {
    margin-bottom: 1.5rem;
}

.mobile-links a {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--primary);
}

/* --- Responsive --- */
@media (max-width: 992px) {
    .nav-links {
        display: none;
    }
    .mobile-menu-btn {
        display: block;
        color: var(--primary);
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 600px) {
    .hero h1 {
        font-size: 2.5rem;
    }
    .footer-grid {
        grid-template-columns: 1fr;
    }
}