:root {
    --bg-color: #0a0a0a;
    --card-bg: #161616;
    --text-color: #e0e0e0;
    --primary-color: #00f3ff;
    /* Cyan Neon */
    --secondary-color: #7000ff;
    /* Purple Neon */
    --accent-color: #ff0055;
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --font-main: 'Outfit', sans-serif;
    --font-mono: 'Space Grotesk', monospace;
}

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

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

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

ul {
    list-style: none;
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    padding: 1rem 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(10, 10, 10, 0.8);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid var(--glass-border);
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.nav-logo {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    /* box-shadow: 0 0 10px rgba(0, 243, 255, 0.2); */
}

.logo-text {
    font-family: var(--font-mono);
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -1px;
}

.highlight {
    color: var(--primary-color);
}

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

.nav-links a:hover {
    color: var(--primary-color);
    text-shadow: 0 0 10px var(--primary-color);
}

/* Hero Section */
.hero {
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    overflow: hidden;
    text-align: center;
}

.hero-content {
    z-index: 2;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.hero-logo {
    width: 120px;
    height: 120px;
    margin-bottom: 2rem;
    border-radius: 20px;
    /* box-shadow: 0 0 30px rgba(112, 0, 255, 0.4); */
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0% {
        transform: translateY(0px);
    }

    50% {
        transform: translateY(-15px);
    }

    100% {
        transform: translateY(0px);
    }
}

h1 {
    font-size: 4rem;
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.1;
    background: linear-gradient(to right, #fff, var(--primary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.subtitle {
    font-size: 1.2rem;
    color: #888;
    margin-bottom: 2rem;
    font-family: var(--font-mono);
}

.cta-button {
    display: inline-block;
    padding: 1rem 2rem;
    background: var(--primary-color);
    color: #000;
    font-weight: 700;
    border-radius: 5px;
    box-shadow: 0 0 20px rgba(0, 243, 255, 0.4);
}

.cta-button:hover {
    background: #fff;
    box-shadow: 0 0 30px rgba(255, 255, 255, 0.6);
    transform: translateY(-2px);
}

/* Sections */
section {
    padding: 6rem 5%;
}

h2 {
    font-size: 2.5rem;
    margin-bottom: 3rem;
    text-align: center;
    font-family: var(--font-mono);
}

/* About */
.about-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    font-size: 1.1rem;
    color: #ccc;
}

/* Course Grid */
.course-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.course-card {
    background: var(--card-bg);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 2rem;
    transition: 0.3s;
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.course-card:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

.course-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    opacity: 0;
    transition: 0.3s;
}

.course-card:hover::before {
    opacity: 1;
}

.course-date {
    font-size: 0.8rem;
    color: #666;
    margin-bottom: 0.5rem;
    font-family: var(--font-mono);
}

.course-title {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: #fff;
}

.course-desc {
    font-size: 0.95rem;
    color: #aaa;
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

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

.tag {
    font-size: 0.75rem;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
    font-family: var(--font-mono);
}

.view-btn {
    width: 100%;
    padding: 0.8rem;
    background: transparent;
    border: 1px solid var(--glass-border);
    color: #fff;
    cursor: pointer;
    transition: 0.3s;
    border-radius: 6px;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.view-btn:hover {
    background: var(--glass-bg);
    border-color: var(--primary-color);
    color: var(--primary-color);
}

/* Footer */
footer {
    padding: 2rem;
    text-align: center;
    border-top: 1px solid var(--glass-border);
    color: #666;
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    z-index: 2000;
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    pointer-events: none;
    transition: 0.3s;
}

.modal.active {
    opacity: 1;
    pointer-events: auto;
}

.modal-content {
    width: 90%;
    height: 90%;
    background: #fff;
    position: relative;
    border-radius: 8px;
    overflow: hidden;
}

.close-modal {
    position: absolute;
    top: 10px;
    right: 20px;
    font-size: 2rem;
    color: #000;
    cursor: pointer;
    z-index: 10;
    background: rgba(255, 255, 255, 0.8);
    padding: 0 10px;
    border-radius: 5px;
}

.hidden {
    display: none;
}

/* Responsive */
@media (max-width: 768px) {
    h1 {
        font-size: 2.5rem;
    }

    .nav-links {
        display: none;
    }

    /* Mobile menu could be added later */
}