/* Reset and base styles */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    --primary-color: #1E88E5;
    --primary-dark: #1565C0;
    --primary-light: #64B5F6;
    --secondary-color: #FF9800;
    --secondary-dark: #F57C00;
    --secondary-light: #FFB74D;
    --text-color: #333333;
    --light-text: #757575;
    --white: #FFFFFF;
    --light-grey: #F5F5F5;
    --grey: #E0E0E0;
    --dark-grey: #616161;
    --success: #4CAF50;
    --error: #F44336;
    --warning: #FFC107;
    --info: #2196F3;

    --header-height: 80px;
    --footer-height: 300px;
    --container-width: 1200px;
    --grid-gap: 20px;
    --border-radius: 8px;
    --box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

body {
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

ul {
    list-style: none;
}

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

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

.section-title {
    font-size: 2.5rem;
    margin-bottom: 2rem;
    text-align: center;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background-color: var(--primary-color);
    margin: 0.5rem auto 0;
    border-radius: 2px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    margin-top: 0;
    margin-bottom: 0.5rem;
    font-weight: 700;
    line-height: 1.2;
}

h1 {
    font-size: 3rem;
}

h2 {
    font-size: 2.25rem;
}

h3 {
    font-size: 1.75rem;
}

h4 {
    font-size: 1.5rem;
}

h5 {
    font-size: 1.25rem;
}

h6 {
    font-size: 1rem;
}

p {
    margin-top: 0;
    margin-bottom: 1rem;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 10px 20px;
    border-radius: var(--border-radius);
    font-weight: 600;
    text-align: center;
    text-transform: uppercase;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    font-size: 0.875rem;
}

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

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

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

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

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

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

/* Header */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    background-color: var(--white);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    transition: var(--transition);
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
}

.logo a {
    display: block;
}

nav ul {
    display: flex;
}

nav ul li {
    margin-left: 1.5rem;
}

nav ul li a {
    color: var(--text-color);
    font-weight: 600;
    padding: 0.5rem 0;
    position: relative;
}

nav ul li a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: var(--transition);
}

nav ul li a:hover::after,
nav ul li a.active::after {
    width: 100%;
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 21px;
    cursor: pointer;
}

.mobile-menu-toggle span {
    width: 100%;
    height: 3px;
    background-color: var(--text-color);
    border-radius: 3px;
    transition: var(--transition);
}

/* Hero Section */
.hero {
    padding: 120px 0 80px;
    background-color: var(--light-grey);
}

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

.hero-content {
    flex: 1;
    padding-right: 40px;
}

.hero-content h1 {
    margin-bottom: 1rem;
    color: var(--text-color);
}

.hero-content p {
    font-size: 1.125rem;
    margin-bottom: 2rem;
    color: var(--light-text);
}

.hero-image {
    flex: 1;
    padding-left: 40px;
}

/* Courses Section */
.courses {
    padding: 80px 0;
    background-color: var(--white);
}

.courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--grid-gap);
}

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

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

.course-image {
    height: 200px;
    background-color: var(--light-grey);
}

.course-image svg {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.course-content {
    padding: 20px;
}

.course-content h3 {
    margin-bottom: 10px;
    font-size: 1.25rem;
}

.course-content p {
    color: var(--light-text);
    margin-bottom: 15px;
}

.course-details {
    display: flex;
    justify-content: space-between;
    margin-bottom: 15px;
    font-size: 0.875rem;
    color: var(--dark-grey);
}

/* About Section */
.about {
    padding: 80px 0;
    background-color: var(--light-grey);
}

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

.about-content {
    flex: 1;
    padding-right: 40px;
}

.about-image {
    flex: 1;
    padding-left: 40px;
}

.stats {
    display: flex;
    justify-content: space-between;
    margin-top: 30px;
}

.stat-item {
    text-align: center;
    padding: 20px;
    background-color: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
}

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 5px;
}

.stat-label {
    color: var(--light-text);
    font-size: 0.875rem;
}

/* Features Section */
.features {
    padding: 80px 0;
    background-color: var(--white);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--grid-gap);
}

.feature-card {
    text-align: center;
    padding: 30px;
    background-color: var(--light-grey);
    border-radius: var(--border-radius);
    transition: var(--transition);
}

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

.feature-icon {
    margin: 0 auto 20px;
    width: 60px;
    height: 60px;
}

.feature-card h3 {
    margin-bottom: 10px;
    font-size: 1.25rem;
}

.feature-card p {
    color: var(--light-text);
}

/* Testimonials Section */
.testimonials {
    padding: 80px 0;
    background-color: var(--light-grey);
}

.testimonials-slider {
    display: flex;
    flex-wrap: wrap;
    gap: var(--grid-gap);
}

.testimonial-card {
    flex: 1;
    min-width: 300px;
    background-color: var(--white);
    border-radius: var(--border-radius);
    padding: 30px;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

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

.testimonial-content {
    margin-bottom: 20px;
}

.testimonial-content p {
    font-style: italic;
    color: var(--text-color);
}

.testimonial-author {
    display: flex;
    align-items: center;
}

.author-avatar {
    width: 50px;
    height: 50px;
    margin-right: 15px;
    border-radius: 50%;
    overflow: hidden;
}

.author-info h4 {
    margin-bottom: 5px;
    font-size: 1rem;
}

.author-info p {
    color: var(--light-text);
    font-size: 0.875rem;
}

/* Newsletter Section */
.newsletter {
    padding: 80px 0;
    background-color: var(--primary-dark);
    color: var(--white);
}

.newsletter-content {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

.newsletter-content h2 {
    margin-bottom: 1rem;
}

.newsletter-content p {
    margin-bottom: 2rem;
    opacity: 0.8;
}

.newsletter form {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.form-group {
    text-align: left;
}

.form-group input[type="text"],
.form-group input[type="email"] {
    width: 100%;
    padding: 12px 15px;
    border: none;
    border-radius: var(--border-radius);
    font-size: 1rem;
}

.checkbox-container {
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.checkbox-container input[type="checkbox"] {
    margin-top: 5px;
}

.checkbox-container label {
    font-size: 0.875rem;
}

.checkbox-container label a {
    color: var(--white);
    text-decoration: underline;
}

.checkbox-container label a:hover {
    color: var(--secondary-light);
}

/* Contact Section */
.contact {
    padding: 80px 0;
    background-color: var(--white);
}

.contact-content {
    display: flex;
    flex-wrap: wrap;
    gap: var(--grid-gap);
}

.contact-info, .contact-map {
    flex: 1;
    min-width: 300px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    margin-bottom: 20px;
}

.contact-icon {
    margin-right: 15px;
    flex-shrink: 0;
}

.contact-item h3 {
    margin-bottom: 5px;
    font-size: 1.25rem;
}

.social-media {
    margin-top: 30px;
}

.social-links {
    display: flex;
    gap: 15px;
    margin-top: 10px;
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: var(--light-grey);
    border-radius: 50%;
    transition: var(--transition);
}

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

.social-links a:hover svg path {
    fill: var(--white);
}

.map-container {
    width: 100%;
    height: 400px;
    background-color: var(--light-grey);
    border-radius: var(--border-radius);
    overflow: hidden;
}

/* Footer */
footer {
    background-color: var(--dark-grey);
    color: var(--white);
    padding: 60px 0 20px;
}

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

.footer-logo {
    flex: 2;
    min-width: 300px;
}

.footer-logo p {
    margin-top: 20px;
    opacity: 0.8;
}

.footer-links {
    flex: 3;
    display: flex;
    flex-wrap: wrap;
    gap: 40px;
}

.footer-links-column {
    flex: 1;
    min-width: 150px;
}

.footer-links-column h3 {
    margin-bottom: 20px;
    font-size: 1.25rem;
    color: var(--white);
}

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

.footer-links-column ul li a {
    color: var(--grey);
    transition: var(--transition);
}

.footer-links-column ul li a:hover {
    color: var(--white);
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.875rem;
    opacity: 0.6;
}

/* Responsive styles */
@media screen and (max-width: 992px) {
    h1 {
        font-size: 2.5rem;
    }
    
    h2 {
        font-size: 2rem;
    }
    
    .hero .container,
    .about .container {
        flex-direction: column;
    }
    
    .hero-content,
    .about-content {
        padding-right: 0;
        margin-bottom: 40px;
    }
    
    .hero-image,
    .about-image {
        padding-left: 0;
    }
    
    .stats {
        flex-direction: column;
        gap: 20px;
    }
}

@media screen and (max-width: 768px) {
    h1 {
        font-size: 2rem;
    }
    
    h2 {
        font-size: 1.75rem;
    }
    
    nav {
        position: fixed;
        top: var(--header-height);
        left: -100%;
        width: 100%;
        height: calc(100vh - var(--header-height));
        background-color: var(--white);
        box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
        transition: var(--transition);
        overflow-y: auto;
    }
    
    nav.active {
        left: 0;
    }
    
    nav ul {
        flex-direction: column;
        padding: 20px;
    }
    
    nav ul li {
        margin: 0;
        width: 100%;
        border-bottom: 1px solid var(--grey);
    }
    
    nav ul li a {
        display: block;
        padding: 15px 0;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .mobile-menu-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 6px);
    }
    
    .mobile-menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    
    .mobile-menu-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -6px);
    }
}

@media screen and (max-width: 576px) {
    .section-title {
        font-size: 1.75rem;
    }
    
    .hero {
        padding: 100px 0 60px;
    }
    
    .courses,
    .about,
    .features,
    .testimonials,
    .newsletter,
    .contact {
        padding: 60px 0;
    }
    
    .testimonial-card {
        min-width: 100%;
    }
    
    .footer-content {
        flex-direction: column;
        gap: 30px;
    }
    
    .footer-logo,
    .footer-links-column {
        min-width: 100%;
    }
}