/* Main Variables */
:root {
    --primary: #2E7D32;
    --primary-dark: #1B5E20;
    --primary-light: #E8F5E9;
    --secondary: #FF6B35;
    --accent: #004E89;
    --text: #333333;
    --text-light: #666666;
    --bg-light: #F8F9FA;
    --white: #FFFFFF;
    --border: #E0E0E0;
    --shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

/* Base Styles */
body {
    font-family: 'Inter', sans-serif;
    color: var(--text);
    line-height: 1.6;
    margin: 0;
    padding: 0;
    overflow-x: hidden;
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: 'Poppins', sans-serif;
    font-weight: 700;
    line-height: 1.2;
}

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

a:hover {
    color: var(--primary-dark);
}

/* Layout */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.section {
    padding: 80px 0;
}

.bg-light {
    background-color: var(--bg-light);
}

.bg-primary {
    background-color: var(--primary);
}

.text-white {
    color: var(--white);
}

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

/* Navigation */
.navbar {
    background: var(--white);
    box-shadow: var(--shadow);
    padding: 15px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand a {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 24px;
    font-weight: 700;
    color: var(--primary);
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 30px;
}

.nav-menu a {
    color: var(--text);
    font-weight: 500;
    font-size: 15px;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--primary);
}

.nav-toggle {
    display: none;
}

/* Hero Section */
.hero-slider {
    height: 80vh;
    min-height: 500px;
}

.heroSwiper,
.heroSwiper .swiper-slide {
    height: 100%;
}

.hero-slide {
    height: 100%;
    background-size: cover;
    background-position: center;
    position: relative;
    display: flex;
    align-items: center;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
}

.hero-content {
    position: relative;
    z-index: 2;
    color: var(--white);
    max-width: 700px;
}

.hero-content h1 {
    font-size: 48px;
    margin-bottom: 20px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-content p {
    font-size: 20px;
    margin-bottom: 30px;
    opacity: 0.9;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: 50px;
    font-weight: 600;
    text-align: center;
    cursor: pointer;
    border: 2px solid transparent;
    transition: var(--transition);
}

.btn-primary {
    background: var(--secondary);
    /* Orange distinctive for CTA */
    color: var(--white);
    border-color: var(--secondary);
}

.btn-primary:hover {
    background: #e55a2b;
    border-color: #e55a2b;
    color: var(--white);
    transform: translateY(-2px);
}

.btn-lg {
    padding: 15px 35px;
    font-size: 18px;
}

.btn-outline-primary {
    background: transparent;
    color: var(--primary);
    border-color: var(--primary);
}

.btn-outline-primary:hover {
    background: var(--primary);
    color: var(--white);
}

.btn-outline-light {
    background: transparent;
    color: var(--white);
    border-color: var(--white);
}

.btn-outline-light:hover {
    background: var(--white);
    color: var(--primary);
}

/* About Grid */
.about-grid {
    display: flex;
    gap: 30px;
}

.about-card {
    background: var(--white);
    padding: 40px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    text-align: center;
    transition: var(--transition);
}

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

.card-icon {
    font-size: 40px;
    color: var(--primary);
    margin-bottom: 20px;
}

/* Projects Grid */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.project-card {
    background: var(--white);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow);
}

.project-image {
    position: relative;
    height: 200px;
    overflow: hidden;
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s;
}

.project-card:hover .project-image img {
    transform: scale(1.1);
}

.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(46, 125, 50, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

.project-card:hover .project-overlay {
    opacity: 1;
}

.project-content {
    padding: 20px;
    text-align: center;
}

.project-content h3 {
    font-size: 18px;
    margin-bottom: 5px;
    color: var(--primary);
}

/* Impact Metrics */
.impact-section {
    padding: 100px 0;
}

.impact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    text-align: center;
}

.impact-icon {
    font-size: 50px;
    margin-bottom: 20px;
    color: rgba(255, 255, 255, 0.8);
}

.impact-item h3 {
    font-size: 48px;
    margin-bottom: 10px;
    color: var(--white);
}

.impact-item p {
    font-size: 18px;
    opacity: 0.9;
}

/* Footer */
.footer {
    background: #1a1a1a;
    color: #cccccc;
    padding: 80px 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    padding-bottom: 60px;
}

.footer h3,
.footer h4 {
    color: var(--white);
    margin-bottom: 20px;
}

.footer-col p {
    font-size: 14px;
    margin-bottom: 12px;
}

.social-links {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}

.social-links a {
    width: 36px;
    height: 36px;
    background: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    color: var(--white);
    transition: var(--transition);
}

.social-links a:hover {
    background: var(--primary);
    transform: translateY(-3px);
}

.footer-col a:not(.social-icon) {
    display: block;
    color: #999;
    margin-bottom: 10px;
    transition: var(--transition);
}

.footer-col a:not(.social-icon):hover {
    color: var(--primary);
    padding-left: 5px;
}

.footer-bottom {
    background: #111;
    padding: 20px 0;
    text-align: center;
    border-top: 1px solid #222;
}

.footer-bottom p {
    font-size: 13px;
    margin-bottom: 5px;
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .nav-toggle {
        display: block;
        background: none;
        border: none;
        font-size: 24px;
        color: var(--text);
        cursor: pointer;
    }

    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: var(--white);
        flex-direction: column;
        padding: 40px;
        transition: var(--transition);
        overflow-y: auto;
    }

    .nav-menu.active {
        left: 0;
    }

    .hero-content h1 {
        font-size: 32px;
    }

    .about-grid {
        flex-direction: column;
    }
}