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

:root {
    --primary-blue: #2B6CB0;
    --secondary-orange: #F39C12;
    --dark-bg: #0A1628;
    --light-text: #ffffff;
    --gray-text: #94A3B8;
    --card-bg: #1E293B;
    --accent-gradient: linear-gradient(135deg, #2B6CB0 0%, #1E40AF 100%);
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--gray-text);
    background-color: var(--dark-bg);
}

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

/* Header and Navigation */
header {
    background-color: rgba(10, 22, 40, 0.95);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.navbar {
    padding: 15px 0;
}

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

.logo img {
    height: 50px;
    width: auto;
}


.nav-links {
    display: flex;
    list-style: none;
    gap: 30px;
    align-items: center;
}

.nav-links a {
    color: var(--light-text);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--secondary-orange);
    transition: width 0.3s ease;
}

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

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

.menu-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
}

.menu-toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--light-text);
    margin: 3px 0;
    transition: all 0.3s ease;
    border-radius: 2px;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #0A1628 0%, #1E293B 100%);
    position: relative;
    overflow: hidden;
    padding-top: 80px;
}

.hero::before {
    content: '';
    position: absolute;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(43, 108, 176, 0.15) 0%, transparent 70%);
    top: -200px;
    right: -200px;
}

.hero::after {
    content: '';
    position: absolute;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(243, 156, 18, 0.1) 0%, transparent 70%);
    bottom: -150px;
    left: -150px;
}

.hero-content {
    text-align: center;
    z-index: 1;
    max-width: 800px;
    padding: 20px;
}

.hero-logo img {
    max-width: 300px;
    width: 100%;
    height: auto;
    margin-bottom: 20px;
    animation: fadeInDown 1s ease;
}

.hero h1 {
    font-size: 3.5rem;
    color: var(--light-text);
    margin-bottom: 20px;
    animation: fadeInUp 1s ease;
}

.tagline {
    font-size: 1.8rem;
    margin-bottom: 15px;
    animation: fadeInUp 1.2s ease;
}

.highlight {
    color: var(--secondary-orange);
    font-weight: 700;
}

.description {
    font-size: 1.2rem;
    color: var(--gray-text);
    margin-bottom: 30px;
    animation: fadeInUp 1.4s ease;
}

.cta-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 1.6s ease;
}

.btn {
    padding: 15px 35px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    display: inline-block;
}

.btn-primary {
    background: var(--accent-gradient);
    color: var(--light-text);
    box-shadow: 0 4px 15px rgba(43, 108, 176, 0.4);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(43, 108, 176, 0.6);
}

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

.btn-secondary:hover {
    background: var(--secondary-orange);
    color: var(--dark-bg);
    transform: translateY(-3px);
}

/* About Section */
.about {
    padding: 100px 0;
    background-color: var(--card-bg);
}

.about h2 {
    font-size: 2.5rem;
    color: var(--light-text);
    text-align: center;
    margin-bottom: 30px;
}

.about p {
    font-size: 1.1rem;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.8;
}

/* Courses Section */
.courses {
    padding: 100px 0;
    background-color: var(--dark-bg);
}

.courses h2 {
    font-size: 2.5rem;
    color: var(--light-text);
    text-align: center;
    margin-bottom: 15px;
}

.section-subtitle {
    text-align: center;
    font-size: 1.1rem;
    margin-bottom: 50px;
    color: var(--gray-text);
}

.playlists-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
    gap: 40px;
    margin-top: 40px;
}

.playlist-card {
    background: var(--card-bg);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.playlist-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(43, 108, 176, 0.3);
}

.video-wrapper {
    position: relative;
    padding-bottom: 56.25%;
    height: 0;
    overflow: hidden;
}

.video-wrapper iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.playlist-info {
    padding: 25px;
}

.playlist-info h3 {
    font-size: 1.5rem;
    color: var(--light-text);
    margin-bottom: 10px;
}

.playlist-info p {
    color: var(--gray-text);
    margin-bottom: 15px;
}

.playlist-link {
    color: var(--secondary-orange);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
    display: inline-block;
}

.playlist-link:hover {
    color: #FFA500;
}

/* Contact Section */
.contact {
    padding: 100px 0;
    background-color: var(--card-bg);
    text-align: center;
}

.contact h2 {
    font-size: 2.5rem;
    color: var(--light-text);
    margin-bottom: 15px;
}

.contact > p {
    font-size: 1.1rem;
    margin-bottom: 40px;
}

.contact-info {
    display: flex;
    justify-content: center;
    gap: 50px;
    flex-wrap: wrap;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.1rem;
}

.contact-item .icon {
    font-size: 1.5rem;
}

.contact-item a {
    color: var(--secondary-orange);
    text-decoration: none;
    transition: color 0.3s ease;
}

.contact-item a:hover {
    color: #FFA500;
}

/* Footer */
footer {
    background-color: #0A1628;
    padding: 30px 0;
    text-align: center;
}

footer p {
    margin: 5px 0;
    color: var(--gray-text);
}

/* Animations */
@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

/* Mobile Responsive */
@media (max-width: 768px) {
    .menu-toggle {
        display: flex;
    }

    .nav-links {
        position: fixed;
        left: -100%;
        top: 80px;
        flex-direction: column;
        background-color: rgba(10, 22, 40, 0.98);
        width: 100%;
        text-align: center;
        transition: left 0.3s ease;
        padding: 30px 0;
        gap: 20px;
    }

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

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

    .tagline {
        font-size: 1.3rem;
    }

    .description {
        font-size: 1rem;
    }

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

    .btn {
        width: 100%;
        max-width: 300px;
    }

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

    .about h2,
    .courses h2,
    .contact h2 {
        font-size: 2rem;
    }

    .hero-logo img {
        max-width: 200px;
    }

    .contact-info {
        flex-direction: column;
        gap: 20px;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 2rem;
    }

    .tagline {
        font-size: 1.1rem;
    }

    .playlists-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}