/* --- Professional CSS Styling --- */
:root {
    --primary-color: #007bff; /* A vibrant blue for a professional look */
    --secondary-color: #2c3e50; /* Darker blue/grey for contrast */
    --accent-color: #28a745; /* A success green for CTAs */
    --text-color: #34495e;
    --light-text: #7f8c8d;
    --light-bg: #f4f7f9;
    --dark-bg: #2c3e50;
    --white-text: #fff;
    --card-bg: #ffffff;
    --border-color: #ecf0f1;
    --code-bg: #ecf0f1;
    --code-border: #bdc3c7;
}

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

body {
    font-family: 'Poppins', sans-serif;
    color: var(--text-color);
    background-color: var(--light-bg);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* --- Header and Navigation --- */
header {
    background-color: var(--dark-bg);
    color: var(--white-text);
    padding: 1rem 5%;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.site-logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: var(--white-text);
    gap: 10px;
}
        
.site-logo img {
    height: 40px;
}
        
.site-logo h1 {
    font-size: 1.5rem;
    font-weight: 600;
    margin: 0;
}

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

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

.nav-menu li a {
    color: var(--white-text);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease, border-bottom 0.3s ease;
    padding-bottom: 5px;
    border-bottom: 2px solid transparent;
}

.nav-menu li a:hover {
    color: var(--primary-color);
    border-bottom: 2px solid var(--primary-color);
}

.menu-toggle {
    display: none;
    font-size: 1.8rem;
    background: none;
    border: none;
    color: var(--white-text);
    cursor: pointer;
    padding: 5px;
}

/* --- Main Content Sections --- */
.container {
    max-width: 1200px;
    margin: 20px auto;
    padding: 0 5%;
    flex-grow: 1;
}
        
/* Reduced space between hero and next section */
#hero-section {
    margin-bottom: 0 !important;
    padding: 20px 40px;
}
        
section {
    background-color: var(--card-bg);
    padding: 60px 40px;
    margin-bottom: 20px;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease;
}
        
section:hover {
    transform: translateY(-5px);
}
        
/* MODIFIED HERO SECTION STYLES */
.hero-section {
    text-align: center;
    padding: 20px 40px;
    background: linear-gradient(135deg, #e3f2fd 0%, #bbdefb 100%);
}
.hero-section p {
    font-size: 1.5rem;
    font-weight: 600;
    max-width: 800px;
    margin: 0 auto;
    color: var(--secondary-color);
}

h2 {
    font-size: 2.2rem;
    color: var(--primary-color);
    text-align: center;
    margin-bottom: 30px;
    font-weight: 600;
    position: relative;
}
h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background-color: var(--accent-color);
    border-radius: 2px;
}
h3 {
    font-size: 1.8rem;
    color: var(--secondary-color);
    margin-top: 25px;
    margin-bottom: 15px;
    font-weight: 600;
}
h4 {
    font-size: 1.4rem;
    color: var(--primary-color);
    margin-top: 20px;
    margin-bottom: 10px;
    font-weight: 500;
}

p {
    margin-bottom: 15px;
    font-size: 1rem;
    color: var(--light-text);
}

ul, ol {
    margin-left: 20px;
    margin-bottom: 15px;
    color: var(--light-text);
}
ul li, ol li {
    margin-bottom: 8px;
}
        
.services-grid, .career-options-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
    margin-top: 30px;
}
.service-card, .career-card {
    background-color: #f8f9fa;
    border-radius: 10px;
    padding: 25px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    text-align: center;
    transition: transform 0.3s ease;
}
.service-card:hover, .career-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}
.service-card i, .career-card i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 15px;
}
.service-card h3, .career-card h3 {
    font-size: 1.4rem;
    margin-top: 0;
}
        
.courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
    margin-top: 30px;
}

.course-card {
    background-color: var(--card-bg);
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.course-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.15);
    border-color: var(--primary-color);
}

.course-card .course-icon {
    font-size: 3.5rem;
    color: var(--primary-color);
    margin-bottom: 20px;
    text-align: center;
}
.course-card h3 {
    font-size: 1.6rem;
    margin-top: 0;
    color: var(--secondary-color);
    text-align: center;
}
.course-card ul {
    list-style-type: none;
    margin-left: 0;
    padding-left: 0;
}
.course-card li {
    font-size: 0.95rem;
    color: var(--light-text);
    margin-bottom: 5px;
}
.course-card li::before {
    content: "✓ ";
    color: var(--accent-color);
    font-weight: bold;
    display: inline-block;
    width: 1.5em;
    margin-left: -1.5em;
}

.course-detail {
    display: none;
    padding: 40px;
    background-color: var(--card-bg);
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
    margin-bottom: 20px;
}
.course-detail.active {
    display: block;
}

.code-block {
    background-color: var(--code-bg);
    border: 1px solid var(--code-border);
    border-left: 5px solid var(--primary-color);
    border-radius: 8px;
    padding: 20px;
    margin: 25px 0;
    overflow-x: auto;
}
.code-block pre {
    margin: 0;
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 0.95rem;
    line-height: 1.5;
    color: var(--text-color);
}
.cta-button {
    display: inline-block;
    background-color: var(--accent-color);
    color: var(--white-text);
    padding: 14px 30px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: background-color 0.3s ease, transform 0.2s ease;
    text-align: center;
    margin-top: 20px;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}
.cta-button:hover {
    background-color: var(--primary-color);
    transform: translateY(-3px);
    box-shadow: 0 5px 10px rgba(0, 0, 0, 0.2);
}
.back-button {
    margin-top: 40px;
    text-align: center;
}

/* New Interview Questions Section */
#interview-questions-section {
    background: var(--light-bg);
}

.question-answer-container {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.platform-qa {
    background: var(--white-color);
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.05);
}

.platform-qa h3 {
    text-align: center;
    color: var(--primary-color);
    margin-bottom: 20px;
    position: relative;
}

.platform-qa h3::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background: var(--accent-color);
    margin: 10px auto 0;
}

.qa-item {
    margin-bottom: 20px;
}

.qa-item h4 {
    color: var(--dark-color);
    margin-bottom: 5px;
    display: flex;
    align-items: center;
}

.qa-item h4::before {
    content: 'Q: ';
    color: var(--primary-color);
    font-weight: 700;
    margin-right: 5px;
}

.qa-item p {
    padding-left: 25px;
    border-left: 3px solid var(--secondary-color);
    margin: 10px 0;
}

.qa-item p::before {
    content: 'A: ';
    color: var(--accent-color);
    font-weight: 700;
    margin-right: 5px;
}

/* --- Contact Form --- */
.contact-form {
    display: grid;
    gap: 20px;
    max-width: 600px;
    margin: 0 auto;
}
.contact-form label {
    font-weight: 500;
    color: var(--secondary-color);
}
.contact-form input, .contact-form textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-family: 'Poppins', sans-serif;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}
.contact-form input:focus, .contact-form textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.1);
}
.contact-form textarea {
    resize: vertical;
}
.contact-form button {
    background-color: var(--primary-color);
    color: var(--white-text);
    padding: 15px;
    border: none;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.3s ease;
}
.contact-form button:hover {
    background-color: var(--secondary-color);
}

/* --- Footer --- */
footer {
    background-color: var(--dark-bg);
    color: var(--white-text);
    text-align: center;
    padding: 2rem 5%;
    margin-top: auto;
}
.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
}
.social-links {
    display: flex;
    gap: 20px;
}
.social-links a {
    color: var(--white-text);
    font-size: 1.5rem;
    transition: color 0.3s ease;
}
.social-links a:hover {
    color: var(--primary-color);
}

/* --- Mobile Responsiveness --- */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
        flex-direction: column;
        position: absolute;
        top: 60px;
        right: 0;
        background-color: var(--dark-bg);
        width: 100%;
        text-align: center;
        box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
        padding: 20px 0;
    }
    .nav-menu.active {
        display: flex;
    }
    .nav-menu li {
        margin: 10px 0;
    }
    .menu-toggle {
        display: block;
    }
            
    h2 {
        font-size: 1.8rem;
    }
            
    section {
        padding: 30px 20px;
    }
            
    .hero-section p {
        font-size: 1.2rem;
    }
            
    .cta-button {
        padding: 12px 25px;
        font-size: 0.9rem;
    }
            
    .service-card, .career-card {
        padding: 20px;
    }
}