/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #2c3e50;
    --secondary-color: #e67e22;
    --accent-color: #3498db;
    --text-color: #333;
    --light-text: #fff;
    --bg-light: #f9f9f9;
    --bg-dark: #34495e;
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: #fff;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Reveal Animation */
.reveal {
    position: relative;
    transform: translateY(50px);
    opacity: 0;
    transition: all 0.8s ease;
}

.reveal.active {
    transform: translateY(0);
    opacity: 1;
}

/* Navigation */
.navbar {
    background-color: var(--primary-color);
    padding: 1rem 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

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

.logo {
    color: var(--light-text);
    font-size: 1.5rem;
    font-weight: bold;
}

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

.nav-menu a {
    color: var(--light-text);
    text-decoration: none;
    font-size: 1rem;
    transition: var(--transition);
    position: relative;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--secondary-color);
    transition: var(--transition);
}

.nav-menu a:hover::after {
    width: 100%;
}

.hamburger {
    display: none;
    cursor: pointer;
}

.bar {
    display: block;
    width: 25px;
    height: 3px;
    margin: 5px auto;
    background-color: var(--light-text);
    transition: var(--transition);
}

/* Hero Section */
.hero {
    height: 100vh;
    background: linear-gradient(135deg, rgba(44,62,80,0.95), rgba(52,152,219,0.8)), url('https://via.placeholder.com/1920x1080/2c3e50/ffffff?text=Raw+Materials');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    display: flex;
    align-items: center;
    text-align: center;
    color: var(--light-text);
    padding-top: 80px;
}

.hero-content h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.hero-content span {
    color: var(--secondary-color);
}

.hero-text {
    font-size: 1.2rem;
    margin-bottom: 2rem;
}

.btn {
    display: inline-block;
    padding: 12px 30px;
    background-color: var(--secondary-color);
    color: var(--light-text);
    text-decoration: none;
    border-radius: 5px;
    transition: var(--transition);
    border: none;
    cursor: pointer;
}

.btn:hover {
    background-color: #d35400;
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0,0,0,0.3);
}

/* Section Styles */
section {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 50px;
}

.section-header h2 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.underline {
    width: 80px;
    height: 4px;
    background-color: var(--secondary-color);
    margin: 0 auto;
}

/* About Section */
.about {
    background-color: var(--bg-light);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.about-text p {
    margin-bottom: 20px;
    font-size: 1.1rem;
}

.about-image img {
    width: 100%;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
}

/* Activities Section */
.activities-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.activity-card {
    background: #fff;
    border-radius: 10px;
    padding: 30px;
    text-align: center;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    transition: var(--transition);
}

.activity-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.2);
}

.card-icon {
    width: 70px;
    height: 70px;
    background: var(--accent-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    color: var(--light-text);
    font-size: 30px;
}

.activity-card h3 {
    color: var(--primary-color);
    margin-bottom: 15px;
}

.img-placeholder {
    margin-top: 20px;
    overflow: hidden;
    border-radius: 8px;
}

.img-placeholder img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    transition: var(--transition);
}

.activity-card:hover .img-placeholder img {
    transform: scale(1.1);
}

/* Products Section */
.products {
    background: linear-gradient(135deg, #f9f9f9, #eaeaea);
}

.products-showcase {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
}

.product-category {
    background: #fff;
    padding: 25px;
    border-radius: 8px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: var(--transition);
    border-bottom: 3px solid transparent;
}

.product-category:hover {
    border-bottom-color: var(--secondary-color);
    transform: translateY(-5px);
}

.product-category h3 {
    color: var(--primary-color);
    margin-bottom: 10px;
}

.product-category p {
    color: #666;
}

/* Contact Section */
.contact {
    background-color: var(--bg-light);
}

.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

.contact-info {
    display: grid;
    gap: 25px;
}

.info-item {
    background: #fff;
    padding: 25px;
    border-radius: 8px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: var(--transition);
}

.info-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.15);
}

.info-item i {
    font-size: 40px;
    color: var(--secondary-color);
    margin-bottom: 15px;
}

.info-item h3 {
    margin-bottom: 10px;
    color: var(--primary-color);
}

.info-item p {
    color: #666;
}

.info-item a {
    color: var(--secondary-color);
    text-decoration: none;
    transition: var(--transition);
}

.info-item a:hover {
    color: #d35400;
}

/* Contact Form */
.contact-form {
    background: #fff;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 5px 30px rgba(0,0,0,0.1);
}

.form-group {
    margin-bottom: 20px;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(52,152,219,0.1);
}

.contact-form textarea {
    resize: vertical;
    min-height: 120px;
}

.submit-btn {
    width: 100%;
    font-size: 1.1rem;
}

/* Footer */
.footer {
    background-color: var(--primary-color);
    color: var(--light-text);
    text-align: center;
    padding: 20px 0;
}

/* Responsive Design */
@media (max-width: 768px) {
    .hamburger {
        display: block;
    }

    .hamburger.active .bar:nth-child(2) {
        opacity: 0;
    }

    .hamburger.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

    .hamburger.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        gap: 0;
        flex-direction: column;
        background-color: var(--primary-color);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        padding: 20px 0;
    }

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

    .nav-menu li {
        margin: 16px 0;
    }

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

    .about-content,
    .contact-wrapper {
        grid-template-columns: 1fr;
    }

    .section-header h2 {
        font-size: 2rem;
    }

    .activities-grid {
        grid-template-columns: 1fr;
    }

    .products-showcase {
        grid-template-columns: 1fr;
    }
}

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

    .hero-text {
        font-size: 1rem;
    }

    .btn {
        padding: 10px 20px;
    }

    .section-header h2 {
        font-size: 1.5rem;
    }

    .contact-form {
        padding: 20px;
    }
}