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

body {
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
    color: #333;
    overflow-x: hidden;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    background-attachment: fixed;
}

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

/* Contact Header */
.contact-header {
    background: #2c3e50;
    color: white;
    padding: 10px 0;
    font-size: 14px;
}

.contact-info {
    display: flex;
    justify-content: center;
    gap: 30px;
    flex-wrap: wrap;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 5px;
}

.contact-item a {
    color: white;
    text-decoration: none;
    transition: color 0.3s;
}

.contact-item a:hover {
    color: #3498db;
}

/* Navigation */
.navbar {
    background: white;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 20px;
}

.nav-brand h1 {
    color: #2c3e50;
    font-size: 2rem;
    font-weight: bold;
    position: relative;
}

.nav-brand h1::before {
    content: "🎯";
    margin-right: 10px;
    font-size: 1.5rem;
}

.nav-brand h1::after {
    content: "";
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 2px;
}

.nav-menu {
    display: flex;
    gap: 2rem;
}

.nav-link {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s;
    position: relative;
}

.nav-link:hover {
    color: #3498db;
}

.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -5px;
    left: 0;
    background: #3498db;
    transition: width 0.3s;
}

.nav-link:hover::after {
    width: 100%;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.nav-toggle span {
    width: 25px;
    height: 3px;
    background: #333;
    margin: 3px 0;
    transition: 0.3s;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 100px 0;
    text-align: center;
}

.hero-content h2 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.hero-content p {
    font-size: 1.3rem;
    margin-bottom: 2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

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

/* Buttons */
.btn {
    display: inline-block;
    padding: 15px 30px;
    text-decoration: none;
    border-radius: 5px;
    font-weight: 600;
    text-align: center;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
    font-size: 16px;
}

.btn-primary {
    background: #3498db;
    color: white;
}

.btn-primary:hover {
    background: #2980b9;
    transform: translateY(-2px);
}

.btn-secondary {
    background: transparent;
    color: white;
    border: 2px solid white;
}

.btn-secondary:hover {
    background: white;
    color: #333;
}

.btn-outline {
    background: transparent;
    color: #3498db;
    border: 2px solid #3498db;
}

.btn-outline:hover {
    background: #3498db;
    color: white;
}

/* Services Section */
.services {
    padding: 80px 0;
    background: rgba(255,255,255,0.9);
    backdrop-filter: blur(10px);
}

.services h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #2c3e50;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.service-card {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s;
}

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

.service-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.service-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: #2c3e50;
}

.service-card p {
    color: #666;
    line-height: 1.8;
}

/* About Section */
.about {
    padding: 80px 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.about-content {
    max-width: 1000px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 300px 1fr;
    gap: 3rem;
    align-items: center;
}

.about-image {
    text-align: center;
}

.about-image img {
    width: 250px;
    height: 250px;
    border-radius: 50%;
    border: 5px solid rgba(255,255,255,0.2);
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
    object-fit: cover;
}

.about-text {
    text-align: left;
}

.about h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: white;
}

.about h3 {
    font-size: 1.5rem;
    color: #b8e6b8;
    margin-bottom: 2rem;
}

.about p {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 1.5rem;
    color: rgba(255,255,255,0.9);
}

/* Process Section */
.process {
    padding: 80px 0;
    background: rgba(255,255,255,0.8);
    backdrop-filter: blur(10px);
}

/* Smart Assistant Section */
.assistant {
    padding: 80px 0;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
}

.assistant h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: #2c3e50;
}

.assistant p {
    text-align: center;
    font-size: 1.2rem;
    color: #666;
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.chat-container {
    max-width: 800px;
    margin: 0 auto;
    background: #f8f9fa;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    overflow: hidden;
}

.chat-header {
    background: linear-gradient(135deg, #4CAF50 0%, #45a049 100%);
    color: white;
    padding: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.chat-header h3 {
    margin: 0;
    font-size: 1.3rem;
}

.chat-status {
    display: flex;
    align-items: center;
    font-size: 0.9rem;
}

.chat-status.online::before {
    content: '';
    width: 8px;
    height: 8px;
    background: #2ecc71;
    border-radius: 50%;
    margin-right: 8px;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { opacity: 1; }
    50% { opacity: 0.5; }
    100% { opacity: 1; }
}

.chat-messages {
    height: 400px;
    overflow-y: auto;
    padding: 20px;
    background: white;
}

.message {
    margin-bottom: 20px;
    max-width: 80%;
}

.assistant-message {
    margin-right: auto;
}

.user-message {
    margin-left: auto;
    text-align: right;
}

.message-content {
    background: #e8f5e8;
    padding: 15px;
    border-radius: 15px;
    margin-bottom: 5px;
    line-height: 1.5;
    border: 1px solid #c8e6c9;
}

.user-message .message-content {
    background: #4CAF50;
    color: white;
    border: 1px solid #45a049;
}

.message-time {
    font-size: 0.8rem;
    color: #666;
    padding: 0 15px;
}

.chat-input-container {
    display: flex;
    padding: 20px;
    background: white;
    border-top: 1px solid #eee;
}

#chat-input {
    flex: 1;
    padding: 15px;
    border: 2px solid #ddd;
    border-radius: 25px;
    margin-right: 10px;
    font-size: 16px;
    outline: none;
    transition: border-color 0.3s;
}

#chat-input:focus {
    border-color: #3498db;
}

#send-button {
    background: #4CAF50;
    color: white;
    border: none;
    padding: 15px 25px;
    border-radius: 25px;
    cursor: pointer;
    font-weight: 600;
    transition: background 0.3s;
    box-shadow: 0 2px 5px rgba(76, 175, 80, 0.3);
}

#send-button:hover {
    background: #45a049;
    box-shadow: 0 4px 8px rgba(76, 175, 80, 0.4);
}

.quick-questions {
    padding: 20px;
    background: #f8f9fa;
    border-top: 1px solid #eee;
}

.quick-questions h4 {
    margin-bottom: 15px;
    color: #2c3e50;
    font-size: 1.1rem;
}

.quick-question-buttons {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 10px;
}

.quick-question {
    background: white;
    border: 2px solid #3498db;
    color: #3498db;
    padding: 10px 15px;
    border-radius: 20px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.3s;
    text-align: left;
}

.quick-question:hover {
    background: #3498db;
    color: white;
    transform: translateY(-2px);
}

.typing-indicator {
    display: flex;
    align-items: center;
    padding: 15px;
    margin-bottom: 20px;
    max-width: 80px;
}

.typing-indicator .dot {
    width: 8px;
    height: 8px;
    background: #bbb;
    border-radius: 50%;
    margin: 0 2px;
    animation: typing 1.4s infinite ease-in-out;
}

.typing-indicator .dot:nth-child(1) { animation-delay: -0.32s; }
.typing-indicator .dot:nth-child(2) { animation-delay: -0.16s; }

@keyframes typing {
    0%, 80%, 100% { transform: scale(0.8); opacity: 0.5; }
    40% { transform: scale(1); opacity: 1; }
}

/* Pricing Section */
.pricing {
    padding: 80px 0;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(15px);
}

.pricing h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: #2c3e50;
}

.pricing p {
    text-align: center;
    font-size: 1.2rem;
    color: #666;
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.pricing-card {
    background: white;
    border-radius: 15px;
    padding: 2rem;
    box-shadow: 0 10px 30px rgba(0,0,0,0.1);
    position: relative;
    transition: transform 0.3s, box-shadow 0.3s;
    text-align: center;
}

.pricing-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.15);
}

.pricing-card.featured {
    border: 3px solid #3498db;
    transform: scale(1.05);
}

.popular-badge {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: #3498db;
    color: white;
    padding: 8px 20px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
}

.package-header h3 {
    font-size: 1.5rem;
    color: #2c3e50;
    margin-bottom: 1rem;
}

.price-container {
    margin: 1.5rem 0;
}

.currency-symbol {
    font-size: 1.5rem;
    vertical-align: top;
    color: #3498db;
}

.price {
    font-size: 3rem;
    font-weight: 700;
    color: #2c3e50;
}

.period {
    font-size: 1rem;
    color: #666;
}

.package-header p {
    color: #666;
    font-size: 1rem;
    margin-bottom: 2rem;
}

.package-features ul {
    list-style: none;
    padding: 0;
    margin: 2rem 0;
    text-align: left;
}

.package-features li {
    padding: 0.5rem 0;
    color: #555;
    border-bottom: 1px solid #f0f0f0;
    line-height: 1.6;
}

.package-features li:last-child {
    border-bottom: none;
}

.pricing-btn {
    width: 100%;
    margin-top: 1rem;
}

/* One-time Services */
.onetime-services {
    margin: 4rem 0;
}

.onetime-services h3 {
    text-align: center;
    font-size: 2rem;
    color: #2c3e50;
    margin-bottom: 2rem;
}

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

.onetime-card {
    background: white;
    border-radius: 10px;
    padding: 2rem;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s;
}

.onetime-card:hover {
    transform: translateY(-3px);
}

.onetime-card h4 {
    color: #2c3e50;
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.onetime-price {
    margin: 1rem 0;
}

.onetime-price .price {
    font-size: 2rem;
    font-weight: 700;
    color: #3498db;
}

.onetime-card p {
    color: #666;
    margin-bottom: 1.5rem;
    font-size: 0.95rem;
    line-height: 1.5;
}

/* Guarantee Section */
.guarantee-section {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 15px;
    padding: 3rem;
    text-align: center;
    color: white;
    margin-top: 3rem;
}

.guarantee-section h3 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
}

.guarantee-section p {
    font-size: 1.1rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto;
}

.process h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #2c3e50;
}

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

.step {
    text-align: center;
    padding: 2rem;
}

.step-number {
    width: 60px;
    height: 60px;
    background: #3498db;
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: bold;
    margin: 0 auto 1rem;
}

.step h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: #2c3e50;
}

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

/* Contact Section */
.contact {
    padding: 80px 0;
}

.contact h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #2c3e50;
}

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

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

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 15px;
    border: 2px solid #ddd;
    border-radius: 5px;
    font-size: 16px;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #3498db;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.detail h4 {
    color: #2c3e50;
    margin-bottom: 0.5rem;
    font-size: 1.2rem;
}

.detail a {
    color: #3498db;
    text-decoration: none;
}

.detail a:hover {
    text-decoration: underline;
}

/* Footer */
.footer {
    background: #2c3e50;
    color: white;
    padding: 40px 0 20px;
}

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

.footer-section h4 {
    margin-bottom: 1rem;
    color: #3498db;
}

.footer-section a {
    display: block;
    color: #bdc3c7;
    text-decoration: none;
    margin-bottom: 0.5rem;
    transition: color 0.3s;
}

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

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #34495e;
    color: #bdc3c7;
}

/* Language Switcher */
.language-switcher {
    position: fixed;
    top: 100px;
    right: 20px;
    z-index: 1000;
    background: white;
    border-radius: 5px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    overflow: hidden;
}

.language-switcher select {
    border: none;
    padding: 10px 15px;
    background: white;
    cursor: pointer;
    font-size: 14px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: white;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0,0,0,0.05);
        padding: 2rem 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-toggle {
        display: flex;
    }

    .hero-content h2 {
        font-size: 2.5rem;
    }

    .hero-content p {
        font-size: 1.1rem;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .contact-info {
        flex-direction: column;
        gap: 10px;
        text-align: center;
    }

    .process-steps {
        grid-template-columns: 1fr;
    }

    .services-grid {
        grid-template-columns: 1fr;
    }

    .about-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }

    .about-text {
        text-align: center;
    }

    .language-switcher {
        position: static;
        margin: 20px auto;
        width: fit-content;
    }

    .pricing-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .pricing-card.featured {
        transform: none;
        order: -1;
    }

    .onetime-grid {
        grid-template-columns: 1fr;
    }

    .guarantee-section {
        padding: 2rem;
        margin-top: 2rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .hero {
        padding: 60px 0;
    }

    .hero-content h2 {
        font-size: 2rem;
    }

    .services, .about, .process, .contact {
        padding: 60px 0;
    }

    .btn {
        padding: 12px 25px;
        font-size: 14px;
    }
}

/* Dark mode support */
@media (prefers-color-scheme: dark) {
    body {
        background: #1a1a1a;
        color: #e0e0e0;
    }

    .navbar {
        background: #2d3748;
    }

    .service-card {
        background: #2d3748;
        color: #e0e0e0;
    }

    .form-group input,
    .form-group textarea {
        background: #2d3748;
        color: #e0e0e0;
        border-color: #4a5568;
    }
}

/* Performance optimizations */
.hero {
    will-change: transform;
}

.service-card,
.btn {
    will-change: transform;
}

/* Accessibility improvements */
.nav-link:focus,
.btn:focus,
input:focus,
textarea:focus {
    outline: 2px solid #3498db;
    outline-offset: 2px;
}

/* Print styles */
/* ========================================
   AI RESOURCES SECTION
   ======================================== */

.resources {
    padding: 80px 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.resources h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: white;
}

.resources .section-subtitle {
    text-align: center;
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.9);
    max-width: 800px;
    margin: 0 auto 3rem;
    line-height: 1.8;
}

/* Resource Stats */
.resources-hero {
    margin-bottom: 4rem;
}

.resource-stats {
    display: flex;
    justify-content: center;
    gap: 4rem;
    flex-wrap: wrap;
}

.stat-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 2rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    backdrop-filter: blur(10px);
    min-width: 150px;
    transition: transform 0.3s ease, background 0.3s ease;
}

.stat-item:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.15);
}

.stat-number {
    font-size: 3rem;
    font-weight: bold;
    color: white;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.9);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Courses Grid */
.courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.course-card {
    background: white;
    border-radius: 15px;
    padding: 2rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    position: relative;
    overflow: hidden;
}

.course-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.course-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);
}

.course-card.featured {
    border: 2px solid #f39c12;
}

.course-card.featured::before {
    height: 6px;
    background: linear-gradient(135deg, #f39c12 0%, #e67e22 100%);
}

.popular-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    background: linear-gradient(135deg, #f39c12 0%, #e67e22 100%);
    color: white;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.course-header {
    margin-bottom: 1.5rem;
}

.course-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.course-header h3 {
    font-size: 1.5rem;
    color: #2c3e50;
    margin-bottom: 0.5rem;
}

.lecture-count {
    display: inline-block;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: bold;
}

.course-description {
    color: #666;
    line-height: 1.8;
    margin-bottom: 1.5rem;
    min-height: 80px;
}

.course-topics {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.topic-tag {
    background: #f0f3f7;
    color: #2c3e50;
    padding: 5px 12px;
    border-radius: 15px;
    font-size: 0.85rem;
    font-weight: 500;
    transition: background 0.3s ease;
}

.topic-tag:hover {
    background: #e0e6ed;
}

/* Download Options */
.download-options {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.download-btn {
    flex: 1;
    min-width: 80px;
    padding: 10px 15px;
    text-align: center;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.download-btn.pdf {
    background: linear-gradient(135deg, #e74c3c 0%, #c0392b 100%);
    color: white;
}

.download-btn.pdf:hover {
    background: linear-gradient(135deg, #c0392b 0%, #a93226 100%);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(231, 76, 60, 0.4);
}

.download-btn.txt {
    background: linear-gradient(135deg, #3498db 0%, #2980b9 100%);
    color: white;
}

.download-btn.txt:hover {
    background: linear-gradient(135deg, #2980b9 0%, #21618c 100%);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(52, 152, 219, 0.4);
}

.download-btn.browse {
    background: white;
    color: #2c3e50;
    border: 2px solid #2c3e50;
}

.download-btn.browse:hover {
    background: #2c3e50;
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(44, 62, 80, 0.4);
}

/* Resources CTA */
.resources-cta {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 3rem;
    text-align: center;
}

.resources-cta h3 {
    font-size: 2rem;
    color: white;
    margin-bottom: 1rem;
}

.resources-cta p {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 2rem;
}

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

.cta-buttons .btn {
    min-width: 200px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .courses-grid {
        grid-template-columns: 1fr;
    }

    .resource-stats {
        gap: 2rem;
    }

    .stat-item {
        min-width: 120px;
    }

    .stat-number {
        font-size: 2.5rem;
    }

    .download-options {
        flex-direction: column;
    }

    .download-btn {
        min-width: 100%;
    }

    .resources h2 {
        font-size: 2rem;
    }

    .resources .section-subtitle {
        font-size: 1rem;
    }

    .cta-buttons {
        flex-direction: column;
    }

    .cta-buttons .btn {
        width: 100%;
    }
}

@media print {
    .contact-header,
    .navbar,
    .language-switcher {
        display: none;
    }

    .hero {
        background: none;
        color: #000;
    }

    .btn {
        border: 1px solid #000;
        background: none;
        color: #000;
    }
}

/* ===============================================
   SYLLABUS SECTION
   =============================================== */

.syllabus-toggle {
    display: block;
    width: 100%;
    margin: 1.5rem 0;
    padding: 1rem 1.5rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: left;
}

.syllabus-toggle:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

.syllabus-toggle:active {
    transform: translateY(0);
}

.syllabus-content {
    margin: 1rem 0;
    padding: 1.5rem;
    background: #f8f9fa;
    border-radius: 8px;
    border-left: 4px solid #667eea;
    max-height: 400px;
    overflow-y: auto;
}

.syllabus-loading {
    text-align: center;
    color: #666;
    padding: 2rem;
    font-style: italic;
}

.lecture-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.lecture-item {
    padding: 0.75rem 1rem;
    margin-bottom: 0.5rem;
    background: white;
    border-radius: 6px;
    border-left: 3px solid #667eea;
    transition: all 0.2s ease;
}

.lecture-item:hover {
    background: #f0f4ff;
    transform: translateX(5px);
}

.lecture-number {
    display: inline-block;
    min-width: 35px;
    padding: 0.25rem 0.5rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-radius: 4px;
    font-size: 0.85rem;
    font-weight: 700;
    margin-right: 0.75rem;
}

.lecture-title {
    color: #333;
    font-size: 0.95rem;
    line-height: 1.5;
}

/* Scrollbar styling for syllabus */
.syllabus-content::-webkit-scrollbar {
    width: 8px;
}

.syllabus-content::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 10px;
}

.syllabus-content::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 10px;
}

.syllabus-content::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, #5568d3 0%, #6a3f8a 100%);
}