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

/* GLOBAL */
body {
    font-family: 'Segoe UI', Tahoma, sans-serif;
    background-color: #0b0f14;
    color: #e4e4e4;
    line-height: 1.7;
}

a {
    color: #00c4ff;
    text-decoration: none;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: auto;
}

/* HEADER */
header {
    background: #0e131a;
    border-bottom: 1px solid #1f2937;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-flex {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
}

.logo {
    font-size: 28px;
    font-weight: 700;
    color: #00c4ff;
}

nav a {
    margin-left: 20px;
    font-size: 16px;
    color: #cbd5e1;
}

nav a:hover {
    color: #00c4ff;
}

/* HERO */
.hero {
    height: 100vh;
    background:
        linear-gradient(rgba(0,0,0,0.7), rgba(0,0,0,0.7)),
        url('hero.jpg') center/cover no-repeat;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.hero h1 {
    font-size: 56px;
    color: #00c4ff;
}

.hero p {
    font-size: 20px;
    margin: 15px 0 30px;
    color: #d1d5db;
}

.btn {
    padding: 14px 30px;
    background: #00c4ff;
    color: #000;
    font-weight: 600;
    border-radius: 6px;
}

.btn:hover {
    background: #1ad6ff;
}

/* SECTIONS */
.section {
    padding: 80px 0;
}

.section.dark {
    background: #0f172a;
}

.section h2 {
    font-size: 36px;
    color: #00c4ff;
    margin-bottom: 20px;
    text-align: center;
}

.section p {
    font-size: 18px;
    text-align: center;
    max-width: 900px;
    margin: auto;
}

/* CARDS */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
    margin-top: 50px;
}

.card {
    background: #020617;
    padding: 30px;
    border-radius: 10px;
    border: 1px solid #1e293b;
    transition: 0.3s;
}

.card:hover {
    transform: translateY(-8px);
    border-color: #00c4ff;
}

.card h3 {
    color: #38bdf8;
    margin-bottom: 10px;
}

.card p {
    color: #cbd5e1;
}

/* CONTACT */
.contact p {
    margin: 10px 0;
    font-size: 18px;
}

/* FOOTER */
footer {
    background: #020617;
    padding: 20px;
    text-align: center;
    font-size: 15px;
    color: #94a3b8;
}

/* RESPONSIVE */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 40px;
    }
    nav {
        display: none;
    }
}