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

:root {
    --primary-color: #667eea;
    --primary-dark: #5a6fd8;
    --secondary-color: #764ba2;
    --text-color: #2d3748;
    --text-light: #718096;
    --background: #ffffff;
    --background-alt: #f7fafc;
    --border-color: #e2e8f0;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

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

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

/* Navigation */
.navbar {
    background: var(--background);
    box-shadow: var(--shadow);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
}

.nav-logo a {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    text-decoration: none;
}

.nav-menu {
    display: flex;
    gap: 2rem;
    flex: 1;
    justify-content: center;
}

.nav-menu a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: color 0.3s;
}

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

.nav-language {
    margin-right: 1rem;
}

.nav-language select {
    padding: 0.5rem;
    border: 2px solid var(--border-color);
    border-radius: 6px;
    background: white;
    color: var(--text-color);
    font-size: 0.875rem;
    cursor: pointer;
}

.nav-language select:focus {
    outline: none;
    border-color: var(--primary-color);
}

.cta-button {
    background: var(--primary-color);
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: background 0.3s;
    white-space: nowrap;
}

.cta-button:hover {
    background: var(--primary-dark);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 24px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
    text-align: center;
}

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

.btn.primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

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

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

/* Hero Sections */
.hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    color: white;
    padding: 160px 0 80px;
    text-align: center;
}

.hero-content h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.hero-content p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

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

.features h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
}

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

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: transform 0.3s;
}

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

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

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

/* Courses Section */
.courses-hero, .biography-hero, .payment-hero, .about-hero, .contact-hero {
    background: var(--background-alt);
    padding: 140px 0 60px;
    text-align: center;
}

.courses-list {
    padding: 80px 0;
}

.course-card {
    display: grid;
    grid-template-columns: 400px 1fr;
    gap: 2rem;
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    margin-bottom: 2rem;
}

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

.course-content {
    padding: 2rem;
}

.course-content h3 {
    font-size: 1.75rem;
    margin-bottom: 1rem;
    color: var(--text-color);
}

.course-description {
    color: var(--text-light);
    margin-bottom: 1.5rem;
}

.course-features {
    list-style: none;
    margin-bottom: 1.5rem;
}

.course-features li {
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
}

.course-features i {
    color: var(--primary-color);
    margin-right: 0.5rem;
}

.course-price {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

/* Biography Section */
.bio-content {
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 3rem;
    align-items: start;
}

.bio-image img {
    width: 100%;
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
}

.bio-text h1 {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
}

.bio-text h2 {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.bio-tagline {
    font-size: 1.25rem;
    color: var(--text-light);
    margin-bottom: 2rem;
}

.bio-details p {
    margin-bottom: 1rem;
}

.bio-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin: 2rem 0;
}

.stat {
    text-align: center;
}

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

.stat-label {
    color: var(--text-light);
}

.bio-contact {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.whatsapp-link, .instagram-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
}

.whatsapp-link {
    background: #25D366;
    color: white;
}

.instagram-link {
    background: #E4405F;
    color: white;
}

.whatsapp-link:hover, .instagram-link:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

/* Payment Section */
.payment-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    max-width: 800px;
    margin: 0 auto;
}

.course-summary, .payment-details {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
}

.course-summary h3, .payment-details h3 {
    margin-bottom: 1.5rem;
    color: var(--text-color);
}

.summary-item, .summary-total {
    display: flex;
    justify-content: space-between;
    padding: 1rem 0;
    border-bottom: 1px solid var(--border-color);
}

.summary-total {
    font-weight: 700;
    font-size: 1.25rem;
    border-bottom: none;
}

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

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

.form-group input, .form-group textarea, .form-group select {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s;
}

.form-group input:focus, .form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.payment-btn {
    width: 100%;
    margin-bottom: 1rem;
}

.security-note {
    text-align: center;
    color: var(--text-light);
    font-size: 0.875rem;
}

.security-note i {
    color: var(--primary-color);
    margin-right: 0.5rem;
}

/* About Section */
.about-grid {
    max-width: 800px;
    margin: 0 auto;
}

.about-text h2 {
    margin: 2rem 0 1rem;
    color: var(--text-color);
}

.about-text ul {
    list-style: none;
    margin: 1rem 0 2rem;
}

.about-text li {
    padding: 0.5rem 0;
    display: flex;
    align-items: center;
}

.about-text li:before {
    content: "✓";
    color: var(--primary-color);
    font-weight: bold;
    margin-right: 0.5rem;
}

.connect-section {
    background: var(--background-alt);
    padding: 2rem;
    border-radius: 12px;
    margin-top: 2rem;
}

.connect-links {
    display: flex;
    gap: 1rem;
    margin: 1rem 0;
    flex-wrap: wrap;
}

.whatsapp-connect, .instagram-connect {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
    background: white;
    color: var(--text-color);
    border: 2px solid var(--border-color);
    transition: all 0.3s;
}

.whatsapp-connect:hover {
    border-color: #25D366;
    color: #25D366;
}

.instagram-connect:hover {
    border-color: #E4405F;
    color: #E4405F;
}

.qr-code {
    text-align: center;
    margin-top: 2rem;
}

.qr-code img {
    max-width: 200px;
    border-radius: 8px;
    margin-bottom: 1rem;
}

/* Contact Section */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    max-width: 1000px;
    margin: 0 auto;
}

.contact-form-container, .contact-info {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
}

.contact-method {
    display: flex;
    align-items: start;
    gap: 1rem;
    margin-bottom: 2rem;
}

.contact-method i {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-top: 0.25rem;
}

.contact-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
}

.contact-link:hover {
    text-decoration: underline;
}

.response-time {
    background: var(--background-alt);
    padding: 1.5rem;
    border-radius: 8px;
    margin-top: 2rem;
}

/* Footer */
.footer {
    background: var(--text-color);
    color: white;
    padding: 3rem 0 1rem;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.footer-section h3, .footer-section h4 {
    margin-bottom: 1rem;
}

.footer-section a {
    color: #cbd5e0;
    text-decoration: none;
    display: block;
    margin-bottom: 0.5rem;
    transition: color 0.3s;
}

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

.social-links {
    display: flex;
    gap: 1rem;
}

.social-links a {
    font-size: 1.5rem;
}

.footer-bottom {
    text-align: center;
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid #4a5568;
    color: #cbd5e0;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-container {
        flex-wrap: wrap;
    }
    
    .nav-menu {
        order: 3;
        width: 100%;
        justify-content: center;
        margin-top: 1rem;
    }
    
    .hero-content h1 {
        font-size: 2rem;
    }
    
    .course-card {
        grid-template-columns: 1fr;
    }
    
    .bio-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .payment-container {
        grid-template-columns: 1fr;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .bio-stats {
        grid-template-columns: 1fr;
    }
    
    .nav-language {
        margin-right: 0;
    }
}

/* Utility Classes */
.text-center {
    text-align: center;
}

.mt-4 {
    margin-top: 2rem;
}

.mb-4 {
    margin-bottom: 2rem;
}