:root {
    --primary-blue: #0066CC;
    --dark-blue: #004A99;
    --light-blue: #E6F2FF;
    --accent-blue: #3399FF;
    --success-green: #28A745;
    --danger-red: #DC3545;
    --text-dark: #212529;
    --text-muted: #6C757D;
    --bg-light: #F8F9FA;
    --white: #FFFFFF;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
    overflow-x: hidden;
}

html {
    scroll-behavior: smooth;
}

/* Navbar Styling */
.navbar {
    padding: 1rem 0;
    transition: all 0.3s ease;
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-blue) !important;
}

.logo-placeholder {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
}

.logo-placeholder i {
    font-size: 2rem;
    color: var(--primary-blue);
}

.nav-link {
    font-weight: 500;
    color: var(--text-dark) !important;
    transition: color 0.3s ease;
    margin: 0 0.5rem;
}

.nav-link:hover {
    color: var(--primary-blue) !important;
}

.btn-primary {
    background-color: var(--primary-blue);
    border-color: var(--primary-blue);
    padding: 0.5rem 1.5rem;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    background-color: var(--dark-blue);
    border-color: var(--dark-blue);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 102, 204, 0.3);
}

.btn-outline-primary {
    border-color: var(--primary-blue);
    color: var(--primary-blue);
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-outline-primary:hover {
    background-color: var(--primary-blue);
    border-color: var(--primary-blue);
    transform: translateY(-2px);
}

/* Hero Section */
.hero-section {
    padding: 120px 0 80px;
    background: linear-gradient(135deg, var(--light-blue) 0%, var(--white) 100%);
}

/* How It Works Section */
.step-card {
    background: var(--white);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    height: 100%;
}

.step-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 102, 204, 0.15);
}

.step-number {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-blue), var(--accent-blue));
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 auto 1rem;
}

.step-card h4 {
    color: var(--text-dark);
    font-weight: 700;
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.step-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* Technical Deep Dive Section */
.tech-detail-card {
    background: var(--white);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    height: 100%;
    border-left: 4px solid var(--primary-blue);
}

.tech-detail-card h4 {
    color: var(--text-dark);
    font-weight: 700;
    margin-bottom: 1rem;
}

.tech-detail-card ul {
    color: var(--text-muted);
    padding-left: 1.5rem;
}

.tech-detail-card ul li {
    margin-bottom: 0.75rem;
}

/* Epic Credentials Section */
.credentials-info-card {
    background: var(--white);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
    height: 100%;
}

.credentials-info-card h4 {
    color: var(--text-dark);
    font-weight: 700;
    margin-bottom: 1rem;
}

.email-template-generator {
    background: var(--white);
    padding: 2rem;
    border-radius: 10px;
}

.email-template-generator .card {
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
}

#emailText {
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    resize: none;
}

.drag-race-container {
    background: var(--white);
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.drag-race-container h3 {
    color: var(--primary-blue);
    font-weight: 700;
}

.race-track {
    margin-top: 1.5rem;
}

.race-lane {
    margin-bottom: 1.5rem;
}

.lane-label {
    display: flex;
    align-items: center;
    margin-bottom: 0.5rem;
    font-weight: 600;
    font-size: 1.1rem;
}

.lane-label i {
    font-size: 1.5rem;
    margin-right: 0.5rem;
}

.manual-bar {
    transition: width 3s ease-in-out;
}

.healthprep-bar {
    transition: width 0.5s ease-in-out;
}

.progress-text {
    font-weight: 600;
    font-size: 0.9rem;
}

/* Features Section */
.features-section {
    background: var(--white);
}

.feature-card {
    text-align: center;
    padding: 2rem;
    border-radius: 10px;
    transition: all 0.3s ease;
    height: 100%;
    background: var(--white);
    border: 2px solid var(--bg-light);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 102, 204, 0.15);
    border-color: var(--primary-blue);
}

.feature-icon {
    font-size: 3rem;
    color: var(--primary-blue);
    margin-bottom: 1rem;
}

.feature-card h4 {
    color: var(--text-dark);
    font-weight: 700;
    margin-bottom: 1rem;
}

.feature-card p {
    color: var(--text-muted);
    margin-bottom: 0;
}

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

.stat-box {
    text-align: center;
    padding: 1.5rem;
    background: var(--white);
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.stat-box h3 {
    font-size: 2.5rem;
    font-weight: 700;
}

.about-image-placeholder {
    background: var(--light-blue);
    border-radius: 15px;
    padding: 4rem 2rem;
    text-align: center;
    height: 100%;
    min-height: 400px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.about-image-placeholder i {
    font-size: 5rem;
    color: var(--primary-blue);
    margin-bottom: 1rem;
}

/* Tutorial Videos Section */
.tutorials-section {
    background: var(--white);
}

.video-card {
    background: var(--white);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    height: 100%;
}

.video-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 102, 204, 0.2);
}

.video-placeholder {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--accent-blue) 100%);
    padding: 4rem 2rem;
    text-align: center;
    color: var(--white);
    cursor: pointer;
    transition: all 0.3s ease;
}

.video-placeholder:hover {
    background: linear-gradient(135deg, var(--dark-blue) 0%, var(--primary-blue) 100%);
}

.video-placeholder i {
    font-size: 4rem;
    margin-bottom: 1rem;
    opacity: 0.9;
}

.video-placeholder p {
    margin: 0;
    font-weight: 600;
}

.video-info {
    padding: 1.5rem;
}

.video-info h5 {
    color: var(--text-dark);
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.video-info p {
    margin-bottom: 0;
}

/* FAQ Section */
.faq-section {
    background: var(--bg-light);
}

.accordion-item {
    border: none;
    margin-bottom: 1rem;
    border-radius: 10px;
    overflow: hidden;
}

.accordion-button {
    background: var(--white);
    color: var(--text-dark);
    font-weight: 600;
    font-size: 1.1rem;
    padding: 1.25rem 1.5rem;
    border: 2px solid var(--bg-light);
}

.accordion-button:not(.collapsed) {
    background-color: var(--primary-blue);
    color: var(--white);
    border-color: var(--primary-blue);
}

.accordion-button:focus {
    box-shadow: none;
    border-color: var(--primary-blue);
}

.accordion-body {
    padding: 1.5rem;
    background: var(--white);
    border: 2px solid var(--bg-light);
    border-top: none;
}

/* Contact Form */
.contact-section {
    background: var(--white);
}

.contact-form .form-control {
    padding: 0.75rem;
    border: 2px solid var(--bg-light);
    border-radius: 8px;
    transition: all 0.3s ease;
}

.contact-form .form-control:focus {
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 0.2rem rgba(0, 102, 204, 0.15);
}

.contact-form .form-label {
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

/* CTA Section */
.cta-section {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--dark-blue) 100%);
}

.cta-section .btn-light {
    background: var(--white);
    color: var(--primary-blue);
    font-weight: 600;
    border: none;
    transition: all 0.3s ease;
}

.cta-section .btn-light:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

.cta-section .btn-outline-light {
    border: 2px solid var(--white);
    font-weight: 600;
}

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

/* Footer */
.footer {
    background-color: #1a1a1a !important;
}

.footer a {
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer a:hover {
    color: var(--accent-blue) !important;
}

.footer h5, .footer h6 {
    color: var(--white);
}

.footer ul li {
    margin-bottom: 0.5rem;
}

/* Responsive Design */
@media (max-width: 992px) {
    .hero-section {
        padding: 100px 0 60px;
    }
    
    .drag-race-container {
        margin-top: 2rem;
    }
    
    .navbar-brand {
        font-size: 1.25rem;
    }
    
    .logo-placeholder i {
        font-size: 1.5rem;
    }
}

@media (max-width: 768px) {
    .hero-section {
        padding: 80px 0 40px;
    }
    
    h1.display-4 {
        font-size: 2rem;
    }
    
    h2.display-5 {
        font-size: 1.75rem;
    }
    
    .feature-icon {
        font-size: 2.5rem;
    }
    
    .stat-box h3 {
        font-size: 2rem;
    }
    
    .about-image-placeholder {
        min-height: 300px;
    }
    
    .video-placeholder {
        padding: 3rem 1.5rem;
    }
    
    .video-placeholder i {
        font-size: 3rem;
    }
}

@media (max-width: 576px) {
    .btn-lg {
        padding: 0.75rem 1.5rem;
        font-size: 1rem;
    }
    
    .drag-race-container {
        padding: 1.5rem;
    }
    
    .progress-text {
        font-size: 0.75rem;
    }
    
    .cta-section .d-flex {
        flex-direction: column;
    }
    
    .cta-section .btn {
        width: 100%;
        margin-bottom: 0.5rem;
    }
}

/* Utility Classes */
.shadow-sm {
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05) !important;
}

.text-primary {
    color: var(--primary-blue) !important;
}

.bg-primary {
    background-color: var(--primary-blue) !important;
}

/* Animation Classes */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-on-scroll {
    animation: fadeInUp 0.8s ease-out;
}