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

html {
    scroll-behavior: smooth;
}

body {
    font-family: Arial, sans-serif;
    background: #080b10;
    color: #ffffff;
    line-height: 1.6;
}


/* NAVBAR */

header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(8, 11, 16, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid #202630;
}

.navbar {
    max-width: 1200px;
    margin: auto;
    padding: 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    color: white;
    text-decoration: none;
    font-size: 24px;
    font-weight: bold;
}

.logo span {
    color: #00ff88;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 30px;
}

.nav-links a {
    color: #b8c0cc;
    text-decoration: none;
}

.nav-links a:hover {
    color: #00ff88;
}

.login-button {
    padding: 10px 18px;
    border: 1px solid #00ff88;
    background: transparent;
    color: #00ff88;
    border-radius: 6px;
    cursor: pointer;
}

.menu-button {
    display: none;
    background: none;
    color: white;
    border: none;
    font-size: 25px;
    cursor: pointer;
}


/* HERO */

.hero {
    max-width: 1200px;
    min-height: 750px;
    margin: auto;
    padding: 100px 20px;

    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    align-items: center;
    gap: 70px;
}

.small-heading {
    color: #00ff88;
    font-size: 13px;
    font-weight: bold;
    letter-spacing: 2px;
}

.hero h1 {
    font-size: clamp(45px, 6vw, 78px);
    line-height: 1.05;
    margin: 20px 0;
}

.hero h1 span {
    color: #00ff88;
}

.hero-text {
    max-width: 600px;
    color: #a8b0bc;
    font-size: 18px;
}

.hero-buttons {
    margin-top: 35px;
    display: flex;
    gap: 15px;
}

.primary-button,
.secondary-button {
    padding: 14px 24px;
    border-radius: 7px;
    font-size: 15px;
    cursor: pointer;
}

.primary-button {
    background: #00ff88;
    border: none;
    color: #06100b;
    font-weight: bold;
}

.primary-button:hover {
    transform: translateY(-2px);
}

.secondary-button {
    background: transparent;
    border: 1px solid #343c47;
    color: white;
}

.secondary-button:hover {
    border-color: #00ff88;
}

.stats {
    margin-top: 60px;
    display: flex;
    gap: 50px;
}

.stats strong {
    font-size: 28px;
}

.stats p {
    color: #8c96a4;
}


/* TERMINAL */

.terminal {
    background: #0d1117;
    border: 1px solid #28303b;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 20px 70px rgba(0, 0, 0, 0.5);
}

.terminal-header {
    padding: 14px;
    background: #151a21;
    display: flex;
    align-items: center;
    gap: 7px;
}

.dot {
    width: 11px;
    height: 11px;
    border-radius: 50%;
}

.red {
    background: #ff5f56;
}

.yellow {
    background: #ffbd2e;
}

.green {
    background: #27c93f;
}

.terminal-title {
    margin-left: 15px;
    color: #788291;
    font-size: 13px;
}

.terminal-body {
    padding: 30px;
    font-family: monospace;
    font-size: 15px;
}

.terminal-body p {
    margin-bottom: 12px;
}

.green-text {
    color: #00ff88;
}

.output {
    color: #9da8b6;
    margin-left: 20px;
}

.success {
    color: #00ff88;
}

.cursor {
    color: #00ff88;
}


/* SECTIONS */

.section {
    max-width: 1200px;
    margin: auto;
    padding: 100px 20px;
}

.section-heading {
    max-width: 650px;
    margin-bottom: 50px;
}

.section-heading h2 {
    font-size: 45px;
    margin: 10px 0;
}

.section-heading > p:last-child {
    color: #8e98a6;
}


/* FEATURES */

.features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.card {
    padding: 35px;
    background: #0d1117;
    border: 1px solid #222a34;
    border-radius: 10px;
    transition: 0.3s;
}

.card:hover {
    transform: translateY(-8px);
    border-color: #00ff88;
}

.icon {
    font-size: 35px;
    margin-bottom: 20px;
}

.card h3 {
    font-size: 22px;
    margin-bottom: 10px;
}

.card p {
    color: #8d97a5;
}


/* COURSES */

.courses-section {
    border-top: 1px solid #202630;
}

.courses {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.course {
    display: flex;
    gap: 30px;
    padding: 30px;
    background: #0d1117;
    border: 1px solid #222a34;
    border-radius: 10px;
}

.course-number {
    font-size: 25px;
    color: #00ff88;
    font-family: monospace;
}

.course p {
    color: #8d97a5;
    margin: 5px 0 15px;
}

.course-button {
    background: none;
    border: none;
    color: #00ff88;
    cursor: pointer;
}


/* ABOUT */

.about {
    max-width: 1200px;
    margin: auto;
    padding: 100px 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    border-top: 1px solid #202630;
}

.about h2 {
    font-size: 45px;
    margin-top: 10px;
}

.about > p {
    color: #929baa;
    font-size: 18px;
}


/* CONTACT */

.contact {
    text-align: center;
}

.contact .section-heading {
    margin-left: auto;
    margin-right: auto;
}

form {
    max-width: 500px;
    margin: auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

input {
    padding: 16px;
    background: #0d1117;
    border: 1px solid #29313c;
    color: white;
    border-radius: 7px;
    outline: none;
}

input:focus {
    border-color: #00ff88;
}

#message {
    margin-top: 20px;
    color: #00ff88;
}


/* FOOTER */

footer {
    padding: 50px 20px;
    text-align: center;
    border-top: 1px solid #202630;
}

footer p {
    color: #7f8997;
    margin-top: 8px;
}

.copyright {
    font-size: 13px;
    margin-top: 25px;
}


/* MOBILE */

@media (max-width: 800px) {

    .menu-button {
        display: block;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: #080b10;
        padding: 25px;
        flex-direction: column;
    }

    .nav-links.active {
        display: flex;
    }

    .hero {
        grid-template-columns: 1fr;
        padding-top: 70px;
    }

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

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

    .stats {
        gap: 25px;
    }

}