/* Base Styles and Variables */
:root {
    --primary-color: #4e7de9;
    --primary-dark: #3a5fc8;
    --secondary-color: #6c757d;
    --light-color: #f8f9fa;
    --dark-color: #212529;
    --success-color: #28a745;
    --danger-color: #dc3545;
    --body-color: #f9fbfd;
    --text-color: #333;
    --border-radius: 8px;
    --box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Poppins', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--body-color);
}

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

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

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

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    border-radius: var(--border-radius);
}

.btn {
    display: inline-block;
    padding: 12px 24px;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    font-weight: 500;
    transition: var(--transition);
    text-align: center;
}

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

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

.btn-secondary {
    background-color: var(--secondary-color);
    color: white;
}

.btn-secondary:hover {
    background-color: #5a6268;
    color: white;
}

.btn-large {
    padding: 14px 28px;
    font-size: 1.1rem;
}

.section-title {
    text-align: center;
    margin-bottom: 50px;
    font-size: 2.5rem;
    font-weight: 600;
    color: var(--dark-color);
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background-color: var(--primary-color);
    margin: 15px auto 0;
    border-radius: 2px;
}

/* Navigation */
.navbar {
    background-color: white;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
}

.logo a {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-color);
}

.nav-links {
    display: flex;
    align-items: center;
}

.nav-links li {
    margin-left: 30px;
}

.nav-links a {
    color: var(--dark-color);
    font-weight: 500;
}

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

.github-link {
    display: flex;
    align-items: center;
    background-color: var(--dark-color);
    color: white !important;
    padding: 8px 16px;
    border-radius: var(--border-radius);
}

.github-link i {
    margin-right: 8px;
}

.github-link:hover {
    background-color: #000;
}

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

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

/* Hero Section */
.hero {
    padding: 80px 0;
    background-color: #f0f5ff;
    overflow: hidden;
}

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

.hero-content {
    flex: 1;
    max-width: 550px;
}

.hero-image {
    flex: 1;
    display: flex;
    justify-content: flex-end;
    align-items: center;
}

.hero-image img {
    max-width: 100%;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

.hero h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--dark-color);
    line-height: 1.2;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    color: var(--secondary-color);
}

.cta-buttons {
    display: flex;
    gap: 15px;
}

/* Features Section */
.features {
    padding: 100px 0;
    background-color: white;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.feature-card {
    background-color: white;
    border-radius: var(--border-radius);
    padding: 30px;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.feature-card h3 {
    margin-bottom: 15px;
    font-size: 1.5rem;
}

/* Usage Section */
.usage {
    padding: 100px 0;
    background-color: #f9f9f9;
}

.tabs {
    margin-top: 50px;
}

.tab-buttons {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 30px;
}

.tab-btn {
    background: none;
    border: none;
    padding: 12px 25px;
    margin: 0 5px 10px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 500;
    color: var(--secondary-color);
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.tab-btn.active, .tab-btn:hover {
    background-color: var(--primary-color);
    color: white;
}

.tab-pane {
    display: none;
}

.tab-pane.active {
    display: block;
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.content-with-image {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 40px;
}

.content-text {
    flex: 1;
    min-width: 300px;
}

.content-image {
    flex: 1;
    min-width: 300px;
    display: flex;
    justify-content: center;
}

.content-text h3 {
    margin-bottom: 20px;
    font-size: 1.8rem;
}

.content-text ul {
    list-style: disc;
    padding-left: 20px;
}

.content-text li {
    margin-bottom: 10px;
}

.content-image img {
    max-width: 100%;
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

/* Getting Started Section */
.getting-started {
    padding: 100px 0;
    background-color: white;
}

.columns-2 {
    display: flex;
    flex-wrap: wrap;
    gap: 30px;
}

.col {
    flex: 1;
    min-width: 300px;
}

.col h3 {
    margin-bottom: 20px;
    font-size: 1.8rem;
}

.code-block {
    background-color: #f5f7fa;
    border-radius: var(--border-radius);
    padding: 20px;
    overflow-x: auto;
}

.code-block pre {
    margin: 0;
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.9rem;
    line-height: 1.5;
}

/* Technical Section */
.technical {
    padding: 100px 0;
    background-color: #f9f9f9;
}

.tech-stack {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 40px;
    margin-bottom: 60px;
}

.tech-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.tech-item img {
    width: 60px;
    height: 60px;
}

.tech-item span {
    font-weight: 500;
}

.contribution {
    text-align: center;
    margin-top: 50px;
}

.contribution h3 {
    margin-bottom: 15px;
    font-size: 1.8rem;
}

.contribution p {
    margin-bottom: 25px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* Call to Action */
.cta {
    padding: 80px 0;
    background-color: var(--primary-color);
    color: white;
    text-align: center;
}

.cta h2 {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.cta p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

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

.cta .btn-primary:hover {
    background-color: rgba(255, 255, 255, 0.9);
}

/* Footer */
.footer {
    background-color: var(--dark-color);
    color: white;
    padding: 70px 0 20px;
}

.footer-content {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 40px;
    margin-bottom: 50px;
}

.footer-logo h3 {
    font-size: 1.8rem;
    margin-bottom: 10px;
}

.footer-links h4 {
    margin-bottom: 20px;
    font-size: 1.2rem;
}

.footer-links ul li {
    margin-bottom: 10px;
}

.footer-links a {
    color: #b0b0b0;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* Responsive Styles */
@media (max-width: 992px) {
    .hero .container {
        flex-direction: column;
        text-align: center;
    }
    
    .hero-content {
        margin-bottom: 40px;
        max-width: 100%;
    }
    
    .cta-buttons {
        justify-content: center;
    }
    
    .hero-image {
        justify-content: center;
    }
    
    .content-with-image {
        flex-direction: column;
    }
    
    .content-text, .content-image {
        width: 100%;
    }
}

@media (max-width: 768px) {
    .hamburger {
        display: block;
    }
    
    .nav-links {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: white;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 10px rgba(0, 0, 0, 0.1);
        padding: 20px 0;
    }
    
    .nav-links.active {
        left: 0;
    }
    
    .nav-links li {
        margin: 15px 0;
    }
    
    .github-link {
        margin: 15px auto;
        width: fit-content;
    }
    
    .tab-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .tab-btn {
        width: 80%;
        margin-bottom: 10px;
    }
}