/* Nature Explorer - CSS Stylesheet */
/* Assignment 3 - Flexbox Responsive Design */

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #2d3436;
}

/* Header with Flexbox Navigation */
header {
    background: linear-gradient(135deg, #2d6a4f 0%, #1b4332 100%);
    color: white;
    padding: 1rem 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
}

.nav-links {
    display: flex;
    gap: 2rem;
    list-style: none;
}

.nav-links a {
    color: white;
    text-decoration: none;
    transition: opacity 0.3s;
}

.nav-links a:hover {
    opacity: 0.8;
}

/* Hero Section - Flexbox */
.hero {
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #52b788 0%, #2d6a4f 100%);
    color: white;
    padding: 4rem 2rem;
    text-align: center;
}

.hero-content h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 1.5rem;
}

.btn {
    display: inline-block;
    padding: 0.8rem 2rem;
    background: white;
    color: #2d6a4f;
    text-decoration: none;
    border-radius: 25px;
    font-weight: bold;
    transition: transform 0.3s;
}

.btn:hover {
    transform: translateY(-2px);
}

/* Features Section - Flexbox Grid */
.features {
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
    max-width: 1200px;
    margin: 4rem auto;
    padding: 0 2rem;
}

.feature-card {
    flex: 1 1 300px;
    display: flex;
    flex-direction: column;
    padding: 2rem;
    background: white;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #52b788 0%, #2d6a4f 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
    margin-bottom: 1rem;
}

.feature-card h3 {
    margin-bottom: 0.5rem;
    color: #2d6a4f;
}

/* Gallery Section - Flexbox */
.gallery {
    background: #f8f9fa;
    padding: 4rem 2rem;
}

.gallery h2 {
    text-align: center;
    margin-bottom: 2rem;
    color: #2d6a4f;
}

.gallery-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    max-width: 1200px;
    margin: 0 auto;
}

.gallery-item {
    flex: 1 1 calc(33.333% - 1.5rem);
    min-width: 250px;
    aspect-ratio: 1;
    background: linear-gradient(135deg, #95d5b2 0%, #52b788 100%);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: white;
    font-weight: bold;
    overflow: hidden;
    position: relative;
}

.photo-box {
    background: none;
}

.photo-box img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.photo-box:hover img {
    transform: scale(1.1);
}

.photo-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(45, 106, 79, 0.9);
    color: white;
    padding: 1rem;
    font-size: 1.1rem;
    font-weight: bold;
    text-align: center;
    transform: translateY(100%);
    transition: transform 0.3s ease;
}

.photo-box:hover .photo-caption {
    transform: translateY(0);
}

/* Footer - Flexbox */
footer {
    background: #2c3e50;
    color: white;
    padding: 2rem;
}

.footer-content {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.footer-section {
    flex: 1 1 250px;
}

.footer-section h3 {
    margin-bottom: 1rem;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: #ecf0f1;
    text-decoration: none;
}

.footer-section a:hover {
    color: #95d5b2;
}

.footer-bottom {
    text-align: center;
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid #34495e;
}

/* Responsive Design */
@media (max-width: 768px) {
    nav {
        flex-direction: column;
        gap: 1rem;
    }

    .nav-links {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }

    .hero-content h1 {
        font-size: 2rem;
    }

    .features {
        flex-direction: column;
    }

    .gallery-item {
        flex: 1 1 100%;
    }

    .footer-content {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .hero-content h1 {
        font-size: 1.5rem;
    }

    .hero-content p {
        font-size: 1rem;
    }

    .feature-card {
        flex: 1 1 100%;
    }
}