:root {
    --primary-color: #ff3b30; /* Energetic Red */
    --secondary-color: #1a1a1a; /* Dark Grey */
    --bg-color: #111111; /* Almost Black */
    --text-color: #ffffff;
    --text-muted: #cccccc;
    --font-heading: 'Montserrat', sans-serif;
    --font-body: 'Open Sans', sans-serif;
}

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

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

h1, h2, h3, h4 {
    font-family: var(--font-heading);
    text-transform: uppercase;
    font-weight: 800;
}

a {
    text-decoration: none;
    color: inherit;
    transition: 0.3s;
}

ul {
    list-style: none;
}

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

.hidden {
    display: none !important;
}

/* Header */
.header {
    background-color: transparent;
    position: absolute;
    top: 0;
    width: 100%;
    z-index: 1000;
    padding: 30px 0;
    border-bottom: none;
}

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

.logo img {
    max-height: 90px;
    width: auto;
}

.lang-switch {
    display: flex;
    gap: 10px;
}

.lang-switch button {
    background: rgba(0,0,0,0.5);
    border: 1px solid var(--text-color);
    color: var(--text-color);
    padding: 8px 15px;
    cursor: pointer;
    font-size: 14px;
    font-weight: bold;
    transition: 0.3s;
}

.lang-switch button.active, .lang-switch button:hover {
    background: var(--primary-color);
    border-color: var(--primary-color);
}

/* Hero Section */
.hero {
    height: 100vh;
    background-color: #333; /* Fallback */
    background-image: url('resources/banner/banner.webp');
    background-size: cover;
    background-position: center;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
}

.hero h2 {
    font-size: 60px;
    margin-bottom: 20px;
    line-height: 1.1;
}

.hero p {
    font-size: 18px;
    margin-bottom: 40px;
    color: #f0f0f0;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 15px 40px;
    font-size: 14px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    cursor: pointer;
}

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

.btn-primary:hover {
    background-color: #cc2f26;
}

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

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

/* Features Section */
.section-padding {
    padding: 100px 0;
}

.features .container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.feature-box {
    background: #222;
    padding: 40px;
    text-align: center;
    transition: 0.3s;
    border-bottom: 3px solid transparent;
}

.feature-box:hover {
    transform: translateY(-10px);
    border-bottom-color: var(--primary-color);
}

.feature-box i {
    font-size: 40px;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.feature-box h3 {
    margin-bottom: 15px;
    font-size: 20px;
}

.feature-box p {
    color: var(--text-muted);
    font-size: 14px;
}

/* About Section */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.img-placeholder {
    width: 100%;
    height: 400px;
    background-color: #333;
    background-image: url('https://images.unsplash.com/photo-1571902943202-507ec2618e8f?ixlib=rb-1.2.1&auto=format&fit=crop&w=800&q=80');
    background-size: cover;
    background-position: center;
}

.section-subtitle {
    color: var(--primary-color);
    font-size: 14px;
    margin-bottom: 10px;
}

.section-title {
    font-size: 36px;
    margin-bottom: 30px;
}

.about-text p {
    color: var(--text-muted);
    margin-bottom: 30px;
}

/* Classes Section */
.classes {
    background-color: #0a0a0a;
}

.center {
    text-align: center;
}

.classes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 50px;
}

.class-card {
    position: relative;
    overflow: hidden;
    cursor: pointer;
}

.class-img-placeholder {
    height: 250px;
    background-color: #444;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #777;
    font-weight: bold;
    font-size: 24px;
    transition: 0.5s;
    background-size: cover;
    background-position: center;
}

/* Adding some random images for classes */
.class-card:nth-child(1) .class-img-placeholder { background-image: url('https://images.unsplash.com/photo-1517963879466-e825c2feb99f?ixlib=rb-1.2.1&auto=format&fit=crop&w=500&q=60'); }
.class-card:nth-child(2) .class-img-placeholder { background-image: url('https://images.unsplash.com/photo-1588286840104-4bd508b831fa?ixlib=rb-1.2.1&auto=format&fit=crop&w=500&q=60'); }
.class-card:nth-child(3) .class-img-placeholder { background-image: url('https://images.unsplash.com/photo-1549719386-74dfcbf7dbed?ixlib=rb-1.2.1&auto=format&fit=crop&w=500&q=60'); }

.class-card:hover .class-img-placeholder {
    transform: scale(1.1);
}

.class-info {
    background: #222;
    padding: 20px;
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    transform: translateY(10px);
    transition: 0.3s;
}

.class-card:hover .class-info {
    transform: translateY(0);
    background: var(--primary-color);
}

.class-info h3 {
    font-size: 18px;
    margin-bottom: 5px;
}

.class-info p {
    font-size: 14px;
    opacity: 0.8;
}

/* Footer */
.footer {
    background-color: #050505;
    padding: 80px 0 20px;
    border-top: 1px solid #222;
}

.footer .container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-col h3 {
    color: var(--primary-color);
    margin-bottom: 20px;
}

.footer-col h4 {
    margin-bottom: 20px;
    font-size: 16px;
}

.footer-col p {
    color: #888;
    font-size: 14px;
    margin-bottom: 10px;
}

.social-links a {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    width: 40px;
    height: 40px;
    background: #222;
    color: var(--text-color);
    margin-right: 10px;
    border-radius: 50%;
}

.social-links a:hover {
    background: var(--primary-color);
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #1a1a1a;
    color: #555;
    font-size: 12px;
}

/* Responsive */
@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    
    .menu-toggle {
        display: block;
        color: var(--text-color);
    }

    .hero h2 {
        font-size: 40px;
    }

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