/* Base CSS Variables */
:root {
    --color-primary: #2E7D32;
    --color-secondary: #00ACC1;
    --color-accent: #FFC107;
    --color-light: #F4F9F6;
    --color-dark: #263238;

    --font-primary: 'Poppins', sans-serif;
    --font-secondary: 'Nunito Sans', sans-serif;

    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 2rem;
    --space-xl: 3rem;

    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;

    --shadow-sm: 0 2px 5px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 10px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);

    --transition-fast: 0.3s ease;
    --transition-medium: 0.5s ease;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
    overflow-x: hidden;
}

body {
    font-family: var(--font-secondary);
    line-height: 1.6;
    color: var(--color-dark);
    background-color: var(--color-light);
    overflow-x: hidden;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-primary);
    margin-bottom: var(--space-md);
    line-height: 1.3;
    color: var(--color-primary);
    font-weight: 600;
}

h1 {
    font-size: 2.5rem;
}

h2 {
    font-size: 2rem;
}

h3 {
    font-size: 1.75rem;
}

h4 {
    font-size: 1.5rem;
}

p {
    margin-bottom: var(--space-md);
}

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

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

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

button, .button {
    display: inline-block;
    background-color: var(--color-primary);
    color: white;
    border: none;
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-family: var(--font-primary);
    font-weight: 500;
}

button:hover, .button:hover {
    background-color: var(--color-secondary);
    color: white;
}

.button-accent {
    background-color: var(--color-accent);
    color: var(--color-dark);
}

.button-accent:hover {
    background-color: #FFB300;
    color: var(--color-dark);
}

.button-outline {
    background-color: transparent;
    border: 2px solid var(--color-primary);
    color: var(--color-primary);
}

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

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

/* Header */
.site-header {
    padding: var(--space-md) 0;
    background-color: rgba(244, 249, 246, 0.95);
    position: relative;
    z-index: 100;
}

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

.site-brand {
    font-family: var(--font-primary);
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--color-primary);
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--color-primary);
    cursor: pointer;
}

.main-nav {
    display: flex;
    gap: var(--space-lg);
}

.nav-list {
    display: flex;
    list-style: none;
    gap: var(--space-md);
}

.nav-item a {
    font-family: var(--font-primary);
    font-weight: 500;
    transition: color var(--transition-fast);
    position: relative;
}

.nav-item a::after {
    content: "";
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -4px;
    left: 0;
    background-color: var(--color-secondary);
    transition: width var(--transition-fast);
}

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

.nav-item.active a {
    color: var(--color-primary);
}

.nav-item.active a::after {
    width: 100%;
    background-color: var(--color-primary);
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 80vh;
    display: flex;
    align-items: center;
    background-color: var(--color-light);
    overflow: hidden;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 600px;
}

.hero-title {
    font-size: 3.5rem;
    margin-bottom: var(--space-md);
    color: var(--color-primary);
}

.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: var(--space-lg);
    color: var(--color-dark);
}

.hero-buttons {
    display: flex;
    gap: var(--space-md);
    flex-wrap: wrap;
}

.hero-image {
    position: absolute;
    top: 0;
    right: 0;
    width: 50%;
    height: 100%;
    z-index: 1;
    background-size: cover;
    background-position: center;
}

/* Features Section */
.features {
    padding: var(--space-xl) 0;
}

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

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

.feature-card {
    padding: var(--space-lg);
    border-radius: var(--radius-md);
    background-color: white;
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
    height: 100%;
    display: flex;
    flex-direction: column;
}

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

.feature-icon {
    font-size: 2.5rem;
    color: var(--color-secondary);
    margin-bottom: var(--space-md);
}

.feature-title {
    font-size: 1.5rem;
    margin-bottom: var(--space-md);
}

/* Projects Section */
.projects {
    padding: var(--space-xl) 0;
    background-color: rgba(0, 172, 193, 0.05);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--space-lg);
}

.project-card {
    background-color: white;
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-fast);
}

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

.project-image {
    height: 200px;
    background-size: cover;
    background-position: center;
}

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

.project-category {
    display: inline-block;
    background-color: rgba(46, 125, 50, 0.1);
    color: var(--color-primary);
    font-size: 0.8rem;
    padding: 0.25rem 0.5rem;
    border-radius: 20px;
    margin-bottom: var(--space-sm);
}

.project-title {
    font-size: 1.25rem;
    margin-bottom: var(--space-sm);
}

.project-description {
    font-size: 0.9rem;
    color: #666;
    margin-bottom: var(--space-md);
}

/* About Section */
.about {
    padding: var(--space-xl) 0;
    background-color: white;
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
    align-items: center;
}

.about-content {
    max-width: 500px;
}

.about-image {
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.values-list {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
    margin-top: var(--space-lg);
}

.value-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
}

.value-icon {
    color: var(--color-primary);
    font-size: 1.2rem;
}

/* Testimonials Section */
.testimonials {
    padding: var(--space-xl) 0;
    background-color: rgba(46, 125, 50, 0.05);
}

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

.testimonial-card {
    background-color: white;
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    box-shadow: var(--shadow-md);
    position: relative;
}

.testimonial-text {
    margin-bottom: var(--space-md);
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.testimonial-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    overflow: hidden;
}

.testimonial-name {
    font-weight: 600;
    color: var(--color-primary);
}

.testimonial-position {
    font-size: 0.9rem;
    color: #666;
}

.testimonial-quote {
    position: absolute;
    top: 20px;
    right: 20px;
    font-size: 3rem;
    color: rgba(46, 125, 50, 0.1);
}

/* CTA Section */
.cta {
    padding: var(--space-xl) 0;
    background-color: var(--color-primary);
    color: white;
    text-align: center;
}

.cta-title {
    color: white;
    margin-bottom: var(--space-md);
}

.cta-description {
    max-width: 600px;
    margin: 0 auto var(--space-lg);
}

.cta-button {
    background-color: white;
    color: var(--color-primary);
}

.cta-button:hover {
    background-color: var(--color-accent);
    color: var(--color-dark);
}

/* Contact Form */
.contact {
    padding: var(--space-xl) 0;
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
}

.contact-icon {
    font-size: 1.5rem;
    color: var(--color-primary);
}

.contact-content h4 {
    margin-bottom: var(--space-xs);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.form-label {
    font-weight: 600;
    color: var(--color-dark);
}

.form-input, .form-textarea {
    padding: var(--space-sm) var(--space-md);
    border: 1px solid #ddd;
    border-radius: var(--radius-md);
    font-family: var(--font-secondary);
    transition: border-color var(--transition-fast);
}

.form-input:focus, .form-textarea:focus {
    outline: none;
    border-color: var(--color-secondary);
}

.form-textarea {
    min-height: 150px;
    resize: vertical;
}

.form-checkbox {
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
}

.form-checkbox input {
    margin-top: 5px;
}

/* Map Section */
.map {
    height: 400px;
    width: 100%;
}

.map iframe {
    width: 100%;
    height: 100%;
    border: 0;
}

/* Footer */
.site-footer {
    background-color: var(--color-dark);
    color: white;
    padding: var(--space-xl) 0 var(--space-lg);
    margin-top: auto;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-xl);
}

.footer-column h4 {
    color: white;
    margin-bottom: var(--space-md);
    position: relative;
    padding-bottom: var(--space-sm);
}

.footer-column h4::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 50px;
    height: 2px;
    background-color: var(--color-accent);
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.footer-link a {
    color: #aaa;
    transition: color var(--transition-fast);
}

.footer-link a:hover {
    color: white;
}

.footer-contact-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-sm);
    margin-bottom: var(--space-sm);
}

.footer-contact-icon {
    color: var(--color-accent);
}

.social-links {
    display: flex;
    gap: var(--space-sm);
    margin-top: var(--space-md);
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.1);
    color: white;
    transition: background-color var(--transition-fast);
}

.social-link:hover {
    background-color: var(--color-accent);
    color: var(--color-dark);
}

.copyright {
    text-align: center;
    padding-top: var(--space-lg);
    margin-top: var(--space-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: #aaa;
    font-size: 0.9rem;
}

/* Privacy Policy Popup */
.privacy-popup {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: rgba(38, 50, 56, 0.95);
    color: white;
    padding: var(--space-md);
    z-index: 1000;
}

.privacy-popup.show {
    display: block;
}

.privacy-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-md);
}

.privacy-text {
    margin: 0;
}

.privacy-close {
    flex-shrink: 0;
}

/* 404 Page */
.error-page {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    min-height: 70vh;
    padding: var(--space-xl) var(--space-md);
}

.error-code {
    font-size: 10rem;
    font-weight: 700;
    color: rgba(46, 125, 50, 0.1);
    line-height: 1;
    margin-bottom: var(--space-lg);
}

.error-title {
    font-size: 2.5rem;
    margin-bottom: var(--space-md);
}

.error-description {
    max-width: 600px;
    margin-bottom: var(--space-lg);
}

/* Thank You Page */
.thank-you {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    min-height: 70vh;
    padding: var(--space-xl) var(--space-md);
}

.thank-you-icon {
    font-size: 5rem;
    color: var(--color-primary);
    margin-bottom: var(--space-lg);
}

.thank-you-title {
    font-size: 2.5rem;
    margin-bottom: var(--space-md);
}

.thank-you-description {
    max-width: 600px;
    margin-bottom: var(--space-lg);
}

/* Products Section */
.products {
    padding: var(--space-xl) 0;
}

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

.product-card {
    background-color: white;
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-fast);
}

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

.product-image {
    height: 250px;
    background-size: cover;
    background-position: center;
}

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

.product-title {
    font-size: 1.25rem;
    margin-bottom: var(--space-xs);
}

.product-price {
    color: var(--color-primary);
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.product-description {
    font-size: 0.9rem;
    color: #666;
    margin-bottom: var(--space-md);
}

/* Learning Resources Section */
.resources-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-lg);
}

.resource-card {
    background-color: white;
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-fast);
    display: flex;
    flex-direction: column;
    height: 100%;
}

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

.resource-image {
    height: 200px;
    background-size: cover;
    background-position: center;
}

.resource-content {
    padding: var(--space-md);
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.resource-category {
    display: inline-block;
    background-color: rgba(0, 172, 193, 0.1);
    color: var(--color-secondary);
    font-size: 0.8rem;
    padding: 0.25rem 0.5rem;
    border-radius: 20px;
    margin-bottom: var(--space-sm);
}

.resource-title {
    font-size: 1.25rem;
    margin-bottom: var(--space-sm);
}

.resource-description {
    font-size: 0.9rem;
    color: #666;
    margin-bottom: var(--space-md);
    flex-grow: 1;
}

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

.tutorial-card {
    background-color: white;
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-fast);
    height: 100%;
}

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

.tutorial-image {
    height: 200px;
    background-size: cover;
    background-position: center;
    position: relative;
}

.tutorial-level {
    position: absolute;
    top: var(--space-sm);
    left: var(--space-sm);
    background-color: rgba(0, 0, 0, 0.7);
    color: white;
    font-size: 0.8rem;
    padding: 0.25rem 0.5rem;
    border-radius: 20px;
}

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

.tutorial-title {
    font-size: 1.25rem;
    margin-bottom: var(--space-xs);
}

.tutorial-meta {
    display: flex;
    gap: var(--space-md);
    font-size: 0.8rem;
    color: #666;
    margin-bottom: var(--space-sm);
}

.tutorial-description {
    font-size: 0.9rem;
    color: #666;
    margin-bottom: var(--space-md);
}

/* 3D Viewer */
.model-viewer {
    width: 100%;
    height: 400px;
    background-color: #f5f5f5;
    border-radius: var(--radius-md);
    overflow: hidden;
    margin-bottom: var(--space-lg);
}

/* Plain Pages */
.plain-page {
    background-color: white;
    color: black;
    padding: var(--space-xl) var(--space-md);
}

.plain-content {
    max-width: 800px;
    margin: 0 auto;
}

.plain-title {
    margin-bottom: var(--space-lg);
}

.plain-section {
    margin-bottom: var(--space-xl);
}

.plain-section h3 {
    margin-bottom: var(--space-md);
}

.plain-list {
    margin-left: var(--space-lg);
    margin-bottom: var(--space-md);
}

.plain-list li {
    margin-bottom: var(--space-xs);
}

/* Responsive Styles */
@media (max-width: 992px) {
    .hero-title {
        font-size: 3rem;
    }

    .hero-image {
        opacity: 0.3;
        width: 100%;
    }

    .hero-content {
        max-width: 100%;
        text-align: center;
        margin: 0 auto;
    }

    .hero-buttons {
        justify-content: center;
    }

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

    .about-content {
        max-width: 100%;
        order: 2;
    }

    .about-image {
        order: 1;
    }

    .contact-grid {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }
}

@media (max-width: 768px) {
    .nav-toggle {
        display: block;
    }

    .main-nav {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: white;
        flex-direction: column;
        padding: var(--space-md);
        box-shadow: var(--shadow-md);
        transform: translateY(-10px);
        opacity: 0;
        pointer-events: none;
        transition: all var(--transition-fast);
    }

    .main-nav.show {
        transform: translateY(0);
        opacity: 1;
        pointer-events: auto;
    }

    .nav-list {
        flex-direction: column;
        width: 100%;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.25rem;
    }

    .values-list {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        gap: var(--space-lg);
    }
}

@media (max-width: 576px) {
    html {
        font-size: 14px;
    }

    .hero {
        min-height: 70vh;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

    .section-title {
        font-size: 1.75rem;
    }

    .feature-card, .project-card, .testimonial-card, .product-card, .resource-card, .tutorial-card {
        padding: var(--space-md);
    }
}