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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
}

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

/* Header */
header {
    background: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
}

.navbar {
    padding: 1rem 0;
}

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

.nav-brand h1 {
    color: #1e40af;
    font-size: 1.5rem;
    font-weight: 700;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-links a:hover {
    color: #1e40af;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #1e40af 0%, #0891b2 100%);
    color: white;
    padding: 120px 0 80px;
    margin-top: 80px;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.5rem;
    font-weight: 300;
    margin-bottom: 1.5rem;
    opacity: 0.9;
}

.hero-description {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    line-height: 1.7;
}

.hero-details {
    display: flex;
    gap: 2rem;
    margin-bottom: 2.5rem;
    font-size: 1.1rem;
}

.cta-button {
    display: inline-block;
    background: #f97316;
    color: white;
    padding: 1rem 2.5rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(249, 115, 22, 0.3);
}

.cta-button:hover {
    background: #ea580c;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(249, 115, 22, 0.4);
}

.hero-image img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    border-radius: 15px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.2);
}

/* About Section */
.about {
    padding: 80px 0;
    background: #f8fafc;
}

.about h2 {
    text-align: center;
    font-size: 2.5rem;
    color: #1e40af;
    margin-bottom: 3rem;
    font-weight: 700;
}

.about-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2.5rem;
}

.about-card {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.about-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
}

.about-card img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 10px;
    margin-bottom: 1.5rem;
}

.about-card h3 {
    font-size: 1.5rem;
    color: #1e40af;
    margin-bottom: 1rem;
    font-weight: 600;
}

.about-card p {
    color: #666;
    line-height: 1.6;
}

/* Speakers Section */
.speakers {
    padding: 80px 0;
    background: white;
}

.speakers h2 {
    text-align: center;
    font-size: 2.5rem;
    color: #1e40af;
    margin-bottom: 1rem;
    font-weight: 700;
}

.section-subtitle {
    text-align: center;
    font-size: 1.2rem;
    color: #666;
    margin-bottom: 3rem;
}

.speakers-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.speaker-card {
    text-align: center;
    padding: 2rem;
    border-radius: 15px;
    transition: transform 0.3s ease;
}

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

.speaker-card img {
    width: 150px;
    height: 150px;
    object-fit: cover;
    border-radius: 50%;
    margin-bottom: 1.5rem;
    border: 4px solid #1e40af;
}

.speaker-card h3 {
    font-size: 1.3rem;
    color: #1e40af;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.speaker-card p {
    color: #666;
    font-weight: 500;
}

/* Testimonials Section */
.testimonials {
    padding: 80px 0;
    background: #f8fafc;
}

.testimonials h2 {
    text-align: center;
    font-size: 2.5rem;
    color: #1e40af;
    margin-bottom: 3rem;
    font-weight: 700;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.testimonial-card {
    background: white;
    padding: 2.5rem;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.08);
    position: relative;
}

.testimonial-card::before {
    content: '"';
    font-size: 4rem;
    color: #1e40af;
    position: absolute;
    top: -10px;
    left: 20px;
    font-weight: bold;
}

.testimonial-card p {
    font-size: 1.1rem;
    line-height: 1.7;
    margin-bottom: 1.5rem;
    color: #333;
    font-style: italic;
}

.testimonial-author strong {
    color: #1e40af;
    font-weight: 600;
}

.testimonial-author span {
    color: #666;
    display: block;
    font-size: 0.9rem;
    margin-top: 0.25rem;
}

/* Contact Section */
.contact {
    padding: 80px 0;
    background: linear-gradient(135deg, #1e40af 0%, #0891b2 100%);
    color: white;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.contact-info h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    font-weight: 700;
}

.contact-info p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    line-height: 1.6;
}

.pricing {
    list-style: none;
    margin-bottom: 2rem;
}

.pricing li {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    padding: 0.5rem 0;
    border-bottom: 1px solid rgba(255,255,255,0.2);
}

.pricing span {
    text-decoration: line-through;
    opacity: 0.7;
    font-size: 1rem;
}

.contact-note {
    font-weight: 600;
    background: rgba(255,255,255,0.1);
    padding: 1rem;
    border-radius: 10px;
    margin-top: 1rem;
}

.contact-form {
    background: white;
    padding: 2.5rem;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
}

.contact-form h3 {
    color: #1e40af;
    font-size: 1.8rem;
    margin-bottom: 2rem;
    font-weight: 600;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: #333;
    font-weight: 500;
}

.form-group input {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid #e5e7eb;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
}

.form-group input:focus {
    outline: none;
    border-color: #1e40af;
}

.checkbox-group {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
}

.checkbox-group input {
    width: auto;
    margin-top: 0.25rem;
}

.checkbox-group label {
    margin-bottom: 0;
    font-size: 0.9rem;
    line-height: 1.4;
}

.checkbox-group a {
    color: #1e40af;
    text-decoration: underline;
}

.submit-button {
    width: 100%;
    background: #f97316;
    color: white;
    padding: 1rem;
    border: none;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s ease;
    margin-top: 1rem;
}

.submit-button:hover {
    background: #ea580c;
}

/* Footer */
footer {
    background: #1f2937;
    color: white;
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-brand h3 {
    color: #1e40af;
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.footer-links h4, .footer-contact h4 {
    margin-bottom: 1rem;
    color: #f3f4f6;
}

.footer-links ul {
    list-style: none;
}

.footer-links a {
    color: #d1d5db;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: #1e40af;
}

.footer-contact p {
    color: #d1d5db;
    margin-bottom: 0.5rem;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #374151;
    color: #9ca3af;
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
}

.modal-content {
    background-color: white;
    margin: 5% auto;
    padding: 2rem;
    border-radius: 15px;
    width: 90%;
    max-width: 600px;
    max-height: 80vh;
    overflow-y: auto;
    position: relative;
}

.close {
    color: #aaa;
    float: right;
    font-size: 2rem;
    font-weight: bold;
    position: absolute;
    right: 1rem;
    top: 1rem;
    cursor: pointer;
}

.close:hover {
    color: #333;
}

.modal-content h2 {
    color: #1e40af;
    margin-bottom: 1rem;
}

.modal-content h3 {
    color: #333;
    margin: 1.5rem 0 0.5rem;
    font-size: 1.2rem;
}

.modal-content p {
    margin-bottom: 1rem;
    line-height: 1.6;
    color: #666;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero-content,
    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .hero-details {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .about-grid,
    .speakers-grid,
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
    
    .container {
        padding: 0 15px;
    }
    
    .hero,
    .about,
    .speakers,
    .testimonials,
    .contact {
        padding: 60px 0;
    }
    
    .modal-content {
        margin: 10% auto;
        width: 95%;
        padding: 1.5rem;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
    
    .hero-description {
        font-size: 1rem;
    }
    
    .cta-button {
        padding: 0.8rem 1.5rem;
        font-size: 1rem;
    }
    
    .about h2,
    .speakers h2,
    .testimonials h2 {
        font-size: 2rem;
    }
    
    .contact-info h2 {
        font-size: 2rem;
    }
}