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

:root {
    --primary: #0066FF;
    --primary-hover: #1A7AFF;
    --secondary: #00C2A8;
    --secondary-hover: #24D3BD;
    --accent: #FFC857;
    --bg-base: #0B1020;
    --surface-light: #101628;
    --surface-subtle: #151B2E;
    --border: #2A3350;
    --text-primary: #F5F7FF;
    --text-secondary: #C3C8E6;
    --text-muted: #8A92BE;
    --text-on-primary: #FFFFFF;
    --text-on-accent: #1A1A1A;
    --success: #1CC88A;
    --warning: #F6C23E;
    --error: #E74A3B;
    --info: #17A2B8;
    --signal-orange: #FF6B35;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-base);
    color: var(--text-primary);
    line-height: 1.7;
    font-size: 18px;
}

/* Header Styles */
header {
    background-color: var(--surface-light);
    border-bottom: 2px solid var(--border);
    padding: 1.2rem 2rem;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

.header-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    transition: transform 0.3s ease;
}

.logo:hover {
    transform: scale(1.05);
}

.logo-svg {
    width: 50px;
    height: 50px;
}

.logo-text {
    font-size: 26px;
    font-weight: bold;
    color: var(--text-primary);
}

.logo-accent {
    color: var(--accent);
}

nav ul {
    display: flex;
    list-style: none;
    gap: 2.5rem;
}

nav a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 17px;
    font-weight: 500;
    transition: color 0.3s ease;
    cursor: pointer;
}

nav a:hover {
    color: var(--secondary);
}

/* Hero Section */
.hero-section {
    max-width: 1400px;
    margin: 0 auto;
    padding: 4rem 2rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-content h1 {
    font-size: 3rem;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.hero-highlight {
    color: var(--accent);
}

.hero-content p {
    font-size: 20px;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.6;
}

.video-container {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%;
    background-color: var(--surface-subtle);
    border-radius: 16px;
    overflow: hidden;
    border: 2px solid var(--border);
    box-shadow: 0 8px 24px rgba(0, 102, 255, 0.2);
    cursor: pointer;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.video-container:hover {
    transform: scale(1.02);
    box-shadow: 0 12px 32px rgba(0, 102, 255, 0.35);
}

.video-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}

/* Price Card */
.price-card {
    background-color: var(--surface-light);
    border: 2px solid var(--accent);
    border-radius: 16px;
    padding: 2.5rem;
    box-shadow: 0 8px 24px rgba(255, 200, 87, 0.15);
    margin-top: 2rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.price-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 32px rgba(255, 200, 87, 0.25);
}

.early-bird-badge {
    display: inline-block;
    background-color: var(--accent);
    color: var(--text-on-accent);
    text-decoration: none;
    padding: 0.6rem 1.5rem;
    border-radius: 50px;
    font-size: 16px;
    font-weight: bold;
    margin-bottom: 1.5rem;
    animation: pulse 2s infinite;
}

@keyframes pulse {

    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.05);
    }
}

.price-content h3 {
    font-size: 28px;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.pricing {
    display: flex;
    align-items: baseline;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.original-price {
    font-size: 24px;
    color: var(--text-muted);
    text-decoration: line-through;
}

.discounted-price {
    font-size: 42px;
    font-weight: bold;
    color: var(--accent);
}

.discount-badge {
    background-color: var(--success);
    color: white;
    padding: 0.4rem 1rem;
    border-radius: 8px;
    font-size: 16px;
    font-weight: bold;
}

.price-features {
    list-style: none;
    margin: 2rem 0;
}

.price-features li {
    padding: 0.8rem 0;
    font-size: 18px;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 12px;
}

.price-features li:before {
    content: "⚡";
    color: var(--accent);
    font-size: 22px;
}

/* Buttons */
.btn-primary {
    background-color: var(--accent);
    color: var(--text-on-accent);
    padding: 1.2rem 3rem;
    border: none;
    border-radius: 12px;
    font-size: 20px;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
    box-shadow: 0 4px 12px rgba(255, 200, 87, 0.3);
    text-align: center;
}

.btn-primary:hover {
    background-color: #FFD470;
    box-shadow: 0 6px 20px rgba(255, 200, 87, 0.5);
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: var(--surface-light);
    color: var(--text-primary);
    border: 2px solid var(--primary);
    padding: 1rem 2.5rem;
    border-radius: 12px;
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
}

.btn-secondary:hover {
    background-color: var(--surface-subtle);
    box-shadow: 0 4px 12px rgba(0, 102, 255, 0.3);
}

/* Content Sections */
section {
    max-width: 1400px;
    margin: 0 auto;
    padding: 5rem 2rem;
}

.section-title {
    font-size: 2.8rem;
    margin-bottom: 3rem;
    text-align: center;
    color: var(--text-primary);
}

.section-title-accent {
    color: var(--secondary);
}

/* Why Choose Section */
.why-choose-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2.5rem;
    margin-top: 3rem;
}

.feature-card {
    background-color: var(--surface-light);
    border: 2px solid var(--border);
    border-radius: 16px;
    padding: 2.5rem;
    transition: all 0.3s ease;
}

.feature-card:hover {
    border-color: var(--primary);
    transform: translateY(-8px);
    box-shadow: 0 12px 28px rgba(0, 102, 255, 0.2);
}

.feature-icon {
    font-size: 48px;
    margin-bottom: 1.5rem;
}

.feature-card h3 {
    font-size: 24px;
    margin-bottom: 1.2rem;
    color: var(--secondary);
}

.feature-card p {
    font-size: 18px;
    color: var(--text-secondary);
    line-height: 1.7;
}

.feature-card ul {
    list-style: none;
    margin-top: 1.5rem;
}

.feature-card ul li {
    padding: 0.6rem 0;
    font-size: 17px;
    color: var(--text-secondary);
    display: flex;
    align-items: start;
    gap: 10px;
}

.feature-card ul li:before {
    content: "✓";
    color: var(--success);
    font-weight: bold;
    font-size: 20px;
    flex-shrink: 0;
}

/* Syllabus Section */
.syllabus-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.syllabus-card {
    background-color: var(--surface-light);
    border-left: 4px solid var(--signal-orange);
    border-radius: 12px;
    padding: 2rem;
    transition: all 0.3s ease;
}

.syllabus-card:hover {
    background-color: var(--surface-subtle);
    box-shadow: 0 8px 20px rgba(255, 107, 53, 0.2);
    transform: translateX(8px);
}

.syllabus-card h4 {
    font-size: 20px;
    margin-bottom: 1rem;
    color: var(--signal-orange);
}

.syllabus-card ul {
    list-style: none;
}

.syllabus-card ul li {
    padding: 0.5rem 0;
    font-size: 16px;
    color: var(--text-secondary);
}

/* FAQ Section */
.faq-container {
    max-width: 900px;
    margin: 3rem auto 0;
}

.faq-item {
    background-color: var(--surface-light);
    border: 2px solid var(--border);
    border-radius: 12px;
    margin-bottom: 1.5rem;
    overflow: hidden;
    transition: all 0.3s ease;
}

.faq-item:hover {
    border-color: var(--primary);
}

.faq-question {
    padding: 1.8rem;
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background-color 0.3s ease;
}

.faq-question:hover {
    background-color: var(--surface-subtle);
}

.faq-icon {
    font-size: 24px;
    color: var(--secondary);
    transition: transform 0.3s ease;
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.4s ease;
    padding: 0 1.8rem;
    color: var(--text-secondary);
    font-size: 18px;
}

.faq-item.active .faq-answer {
    max-height: 500px;
    padding: 1.5rem 1.8rem;
}

.faq-item.active .faq-icon {
    transform: rotate(180deg);
}

/* Testimonials Section */
.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2.5rem;
    margin-top: 3rem;
}

.testimonial-card {
    background-color: var(--surface-light);
    border: 2px solid var(--border);
    border-radius: 16px;
    padding: 2.5rem;
    transition: all 0.3s ease;
    position: relative;
}

.testimonial-card:hover {
    border-color: var(--secondary);
    box-shadow: 0 12px 28px rgba(0, 194, 168, 0.15);
    transform: translateY(-5px);
}

.quote-icon {
    font-size: 48px;
    color: var(--secondary);
    opacity: 0.3;
    position: absolute;
    top: 20px;
    right: 20px;
}

.testimonial-content {
    font-size: 18px;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 2rem;
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.author-avatar {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    font-weight: bold;
    color: white;
}

.author-info h4 {
    font-size: 19px;
    color: var(--text-primary);
    margin-bottom: 0.3rem;
}

.author-info p {
    font-size: 16px;
    color: var(--text-muted);
}

/* Contact Section */
.contact-section {
    background-color: var(--surface-light);
    border-radius: 16px;
    padding: 4rem;
    max-width: 800px;
    margin: 3rem auto;
    border: 2px solid var(--border);
}

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

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.form-group label {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
}

.form-group input,
.form-group textarea {
    padding: 1.2rem;
    border: 2px solid var(--border);
    border-radius: 12px;
    background-color: var(--surface-subtle);
    color: var(--text-primary);
    font-size: 17px;
    transition: all 0.3s ease;
    font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(0, 102, 255, 0.1);
}

.form-group textarea {
    min-height: 150px;
    resize: vertical;
}

/* Footer */
footer {
    background-color: var(--surface-light);
    border-top: 2px solid var(--border);
    padding: 4rem 2rem 2rem;
    margin-top: 5rem;
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-section h3 {
    font-size: 22px;
    margin-bottom: 1.5rem;
    color: var(--secondary);
}

.footer-section p,
.footer-section a {
    color: var(--text-secondary);
    font-size: 17px;
    line-height: 1.8;
    text-decoration: none;
    display: block;
    margin-bottom: 0.8rem;
    transition: color 0.3s ease;
}

.footer-section a:hover {
    color: var(--secondary);
}

.social-links {
    display: flex;
    gap: 1.5rem;
    margin-top: 1rem;
    flex-wrap: wrap;
}

.social-link {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background-color: var(--surface-subtle);
    border: 2px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    text-decoration: none;
}

.social-link:hover {
    background-color: var(--primary);
    border-color: var(--primary);
    transform: translateY(-3px);
    box-shadow: 0 6px 16px rgba(0, 102, 255, 0.3);
}

.social-link svg {
    width: 24px;
    height: 24px;
    fill: var(--text-secondary);
    transition: fill 0.3s ease;
    margin: 10px;
}

.social-link:hover svg {
    fill: white;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
    color: var(--text-muted);
    font-size: 16px;
}

.quick-links {
    list-style: none;
}

.quick-links li {
    margin-bottom: 0.8rem;
}

.quick-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s ease;
    cursor: pointer;
}

.quick-links a:hover {
    color: var(--secondary);
}

/* Responsive Design */
@media (max-width: 968px) {
    .hero-section {
        grid-template-columns: 1fr;
        gap: 3rem;
        padding: 3rem 2rem;
    }

    .hero-content h1 {
        font-size: 2.5rem;
    }

    .section-title {
        font-size: 2.2rem;
    }

    .why-choose-grid,
    .syllabus-grid,
    .testimonials-grid {
        grid-template-columns: 1fr;
    }

    nav ul {
        gap: 1.5rem;
    }

    nav a {
        font-size: 15px;
    }
}

@media (max-width: 768px) {
    header nav {
        display: none;
    }

    .header-container {
        justify-content: center;
    }

    .hero-content h1 {
        font-size: 2rem;
        text-align: center;
    }

    .hero-content p {
        font-size: 18px;
        text-align: center;
    }

    .section-title {
        font-size: 1.8rem;
    }

    section {
        padding: 3rem 1.5rem;
    }

    .contact-section {
        padding: 2.5rem 1.5rem;
    }

    .price-card {
        padding: 2rem;
    }

    .original-price {
        font-size: 20px;
    }

    .discounted-price{
        font-size: 24px;
    }

    .btn-primary {
        padding: 1rem 2rem;
        font-size: 16px;
    }

    body {
        font-size: 16px;
    }

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

/* Smooth Scrolling */
html {
    scroll-behavior: smooth;
}

/* Animation for elements on scroll */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}