* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Segoe UI", Arial, sans-serif;
}

body {
    background: #020617;
    color: #e5e7eb;
    line-height: 1.6;
}

/* NAVBAR */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 60px;
    background: #020617;
    border-bottom: 1px solid #0f172a;
    position: sticky;
    top: 0;
    z-index: 100;
}

.logo {
    font-size: 22px;
    font-weight: bold;
    color: #38bdf8;
}

.nav-links a {
    margin-left: 25px;
    text-decoration: none;
    color: #cbd5f5;
    font-weight: 500;
}

.nav-links a:hover {
    color: #38bdf8;
}

/* HERO */
.hero {
    padding: 80px 60px;
    background: linear-gradient(135deg, #0f766e, #0284c7);
    color: white;
}

.hero h1 {
    font-size: 48px;
    max-width: 800px;
}

.hero p {
    font-size: 18px;
    max-width: 700px;
    margin-top: 15px;
}

.hero-tags {
    margin-top: 25px;
}

.hero-tags span {
    background: rgba(255,255,255,0.15);
    padding: 8px 16px;
    border-radius: 20px;
    margin-right: 10px;
    font-size: 14px;
}

/* SECTIONS */
.section {
    padding: 60px;
}

.section h2 {
    font-size: 32px;
    margin-bottom: 25px;
}

/* CARDS */
.card {
    background: #020617;
    border: 1px solid #0f172a;
    border-radius: 16px;
    padding: 30px;
    box-shadow: 0 0 30px rgba(0,0,0,0.3);
    transition: transform 0.3s ease;
}

.card:hover {
    transform: translateY(-6px);
}

/* VIDEO */
video {
    width: 100%;
    border-radius: 12px;
    margin-top: 20px;
}

/* PDF */
embed {
    width: 100%;
    height: 600px;
    margin-top: 20px;
    border-radius: 12px;
}

/* TECH GRID */
.tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
}

.tech-card {
    background: #020617;
    border: 1px solid #0f172a;
    padding: 25px;
    border-radius: 14px;
    text-align: center;
    font-weight: 500;
    transition: 0.3s ease;
}

.tech-card:hover {
    background: #0284c7;
    color: white;
}

/* FOOTER */
footer {
    background: #020617;
    border-top: 1px solid #0f172a;
    padding: 30px;
    text-align: center;
    font-size: 14px;
    opacity: 0.9;
}

footer a {
    color: #38bdf8;
    text-decoration: none;
}

footer a:hover {
    text-decoration: underline;
}

/* RESPONSIVE */
@media(max-width: 768px) {
    .hero h1 {
        font-size: 34px;
    }

    .section {
        padding: 40px 20px;
    }

    .navbar {
        flex-direction: column;
        gap: 10px;
    }
}