:root {
    /* Colors - Dark Mode Theme */
    --color-bg: #000000;
    --color-bg-alt: #1a1a1a;
    --color-text: #e2e8f0;
    --color-text-light: #94a3b8;
    --color-heading: #ffffff;
    
    --color-primary: #ffffff; /* Primary brand color (often used for text/borders in dark mode) */
    --color-accent: #39ff14; /* Neon Green */
    --color-accent-hover: #32d913;
    --color-accent-text: #000000; /* Text on top of neon green */
    
    --color-border: #333333;
    --color-card-bg: #111111;
    --color-input-bg: #1a1a1a;
    
    /* Typography */
    --font-heading: 'Playfair Display', serif;
    --font-body: 'Plus Jakarta Sans', sans-serif;
    
    /* Spacing */
    --container-width: 1200px;
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    /* Transitions */
    --transition: all 0.3s ease;
    --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.5);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.5);
    --neon-glow: 0 0 10px rgba(57, 255, 20, 0.3);
}

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

body {
    font-family: var(--font-body);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--color-heading);
    line-height: 1.2;
    text-transform: uppercase;
    letter-spacing: 1px;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    display: block;
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 32px;
    border-radius: 2px; /* Sharper edges for modern feel */
    font-weight: 700;
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    cursor: pointer;
    transition: var(--transition);
    border: 1px solid transparent;
}

.btn-primary {
    background-color: var(--color-accent);
    color: var(--color-accent-text);
    box-shadow: var(--neon-glow);
}

.btn-primary:hover {
    background-color: var(--color-accent-hover);
    box-shadow: 0 0 20px rgba(57, 255, 20, 0.5);
    transform: translateY(-2px);
}

.btn-outline {
    border: 1px solid var(--color-accent);
    color: var(--color-accent);
    background: transparent;
}

.btn-outline:hover {
    background-color: var(--color-accent);
    color: var(--color-accent-text);
    box-shadow: var(--neon-glow);
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(0, 0, 0, 0.85); /* Dark semi-transparent */
    backdrop-filter: blur(12px);
    z-index: 1000;
    padding: 1rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    transition: var(--transition);
}

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

.logo {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--color-heading);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    letter-spacing: 2px;
}

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

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

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

.nav-links a {
    font-weight: 500;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-text);
    position: relative;
}

.nav-links a:hover, .nav-links a.active {
    color: var(--color-accent);
}

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

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

/* Country Selector */
.selector-wrapper {
    position: relative;
}

.selector-btn {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--color-border);
    color: var(--color-heading);
    padding: 8px 16px;
    border-radius: 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-body);
    font-weight: 500;
    transition: var(--transition);
}

.selector-btn:hover {
    border-color: var(--color-accent);
}

.selector-dropdown {
    position: absolute;
    top: 120%;
    right: 0;
    background-color: var(--color-bg-alt);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    width: 200px;
    box-shadow: var(--shadow-lg);
    padding: 0.5rem 0;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: var(--transition);
    z-index: 1001;
}

.selector-dropdown.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.selector-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 20px;
    cursor: pointer;
    transition: background 0.2s;
    color: var(--color-text);
}

.selector-item:hover {
    background-color: rgba(255, 255, 255, 0.05);
    color: var(--color-heading);
}

/* Mobile Toggle */
.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
}

.mobile-toggle span {
    width: 25px;
    height: 2px;
    background-color: var(--color-heading);
    transition: var(--transition);
}

/* Hero Section */
.hero {
    position: relative;
    height: 100vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    overflow: hidden;
    padding-top: 80px;
    background-color: #000;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 0;
    opacity: 0.6; /* Darken image */
    transition: opacity 1s ease-in-out;
}

/* Overlay gradient for better text readability */
.hero::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, #000 0%, rgba(0,0,0,0.6) 50%, rgba(0,0,0,0) 100%);
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    color: #fff;
    max-width: 800px;
}

.hero-title {
    font-size: 4rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    line-height: 1.1;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s forwards 0.2s;
}

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

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 2.5rem;
    opacity: 0;
    color: var(--color-text-light);
    transform: translateY(30px);
    animation: fadeInUp 0.8s forwards 0.4s;
    max-width: 600px;
    font-weight: 300;
}

.hero-cta {
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s forwards 0.6s;
    display: flex;
    gap: 1rem;
}

/* Stats Section */
.stats-section {
    padding: var(--spacing-lg) 0;
    background-color: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    text-align: center;
}

.stat-item h3 {
    color: var(--color-accent);
    font-size: 3rem;
    margin-bottom: 0.5rem;
}

.stat-item p {
    color: var(--color-text-light);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 2px;
}

/* Courses Section */
.courses-section {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-bg-alt);
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.section-subtitle {
    color: var(--color-text-light);
    max-width: 600px;
    margin: 0 auto;
}

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

.course-card {
    background: var(--color-card-bg);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    overflow: hidden;
    transition: var(--transition);
    cursor: pointer;
    position: relative;
}

.course-card:hover {
    transform: translateY(-10px);
    border-color: var(--color-accent);
    box-shadow: 0 10px 30px -10px rgba(57, 255, 20, 0.15);
}

.course-image-wrapper {
    position: relative;
    height: 240px;
    overflow: hidden;
}

.course-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.course-card:hover .course-image {
    transform: scale(1.05);
}

.course-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    background-color: var(--color-accent);
    color: var(--color-accent-text);
    padding: 4px 12px;
    border-radius: 2px;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.course-content {
    padding: 1.5rem;
}

.course-category {
    color: var(--color-accent);
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 0.5rem;
}

.course-title {
    font-size: 1.4rem;
    margin-bottom: 1rem;
    color: #fff;
}

.course-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 1.5rem;
    padding-top: 1rem;
    border-top: 1px solid var(--color-border);
}

.course-price {
    font-size: 1.2rem;
    font-weight: 700;
    color: #fff;
}

.course-rating {
    display: flex;
    align-items: center;
    gap: 5px;
    color: var(--color-accent); /* Green stars */
    font-size: 0.9rem;
}

/* Course Details Page */
.course-details-header {
    margin-bottom: 2rem;
}

.course-syllabus-item {
    background: var(--color-card-bg);
    padding: 1.5rem;
    margin-bottom: 1rem;
    border-left: 3px solid var(--color-accent);
    border-radius: 0 4px 4px 0;
}

.course-syllabus-item h4 {
    color: #fff;
    margin-bottom: 0.5rem;
}

.course-sidebar {
    background: var(--color-card-bg);
    padding: 2rem;
    border: 1px solid var(--color-border);
}

.feature-list-item {
    display: flex;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 1px solid var(--color-border);
    color: var(--color-text-light);
}

.feature-list-item span:last-child {
    color: #fff;
}

/* Instructors Section */
.instructors-section {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-bg);
}

.instructors-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: var(--spacing-lg);
}

.instructor-card {
    text-align: center;
    background: var(--color-card-bg);
    padding: 2rem;
    border: 1px solid var(--color-border);
    transition: var(--transition);
}

.instructor-card:hover {
    border-color: var(--color-accent);
}

.instructor-image {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    object-fit: cover;
    margin: 0 auto 1.5rem;
    border: 3px solid var(--color-accent);
    padding: 4px;
    background: var(--color-bg);
}

.instructor-name {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    color: #fff;
}

.instructor-role {
    color: var(--color-accent);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Contact Page (Form) */
.contact-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    padding: var(--spacing-lg) 0;
}

.contact-info h3 {
    margin-bottom: 1.5rem;
    font-size: 2rem;
    color: #fff;
}

.info-item {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 2rem;
    align-items: center;
}

.info-icon {
    width: 50px;
    height: 50px;
    background-color: rgba(57, 255, 20, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-accent);
    font-size: 1.2rem;
    border: 1px solid var(--color-accent);
}

.contact-form {
    background-color: var(--color-card-bg);
    padding: 2rem;
    border-radius: 4px;
    border: 1px solid var(--color-border);
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--color-text-light);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 12px;
    background-color: var(--color-input-bg);
    border: 1px solid var(--color-border);
    border-radius: 4px;
    font-family: inherit;
    color: #fff;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 10px rgba(57, 255, 20, 0.1);
}

/* Footer */
.footer {
    background-color: #050505;
    color: #fff;
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--color-border);
}

.footer-container {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 3rem;
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
}

.footer-logo {
    font-family: var(--font-heading);
    font-size: 2rem;
    color: #fff;
    margin-bottom: 1rem;
    display: block;
    letter-spacing: 2px;
}

.footer-desc {
    color: var(--color-text-light);
    margin-bottom: 1.5rem;
    max-width: 300px;
}

.footer-col h4 {
    color: #fff;
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.footer-col ul li {
    margin-bottom: 0.8rem;
}

.footer-col ul li a {
    color: var(--color-text-light);
    transition: var(--transition);
}

.footer-col ul li a:hover {
    color: var(--color-accent);
    padding-left: 5px;
}

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

.social-links a {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255,255,255,0.05);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    transition: var(--transition);
}

.social-links a:hover {
    background: var(--color-accent);
    color: #000;
}

.footer-bottom {
    padding: 2rem 0;
    text-align: center;
    color: var(--color-text-light);
    font-size: 0.9rem;
}

/* Animations */
@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.fade-in {
    animation: fadeIn 0.5s ease-in forwards;
}

/* Responsive */
@media (max-width: 992px) {
    .hero-title { font-size: 3rem; }
    .footer-container { grid-template-columns: 1fr 1fr; }
    .contact-wrapper { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 85%;
        height: 100vh;
        background-color: var(--color-bg-alt);
        flex-direction: column;
        justify-content: center;
        padding: 2rem;
        transition: right 0.3s cubic-bezier(0.77, 0, 0.175, 1);
        box-shadow: -10px 0 30px rgba(0,0,0,0.5);
        border-left: 1px solid var(--color-border);
        z-index: 1002;
    }
    
    .nav-menu.active {
        right: 0;
    }
    
    .nav-links {
        flex-direction: column;
        align-items: center;
        margin-bottom: 2rem;
    }
    
    .nav-links a {
        font-size: 1.2rem;
    }

    .mobile-toggle {
        display: flex;
        z-index: 1003;
    }
    
    .mobile-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 6px);
        background-color: var(--color-accent);
    }
    .mobile-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    .mobile-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -6px);
        background-color: var(--color-accent);
    }
    
    .hero-title { font-size: 2.5rem; }
    .footer-container { grid-template-columns: 1fr; }
    
    .stats-grid { grid-template-columns: 1fr 1fr; }
}