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

body {
    background: #f5f7fb;
}

/* CONTAINER */
.container {
    width: 90%;
    margin: auto;
}

/* HEADER */
header {
    background: #0d1b2a;
    color: white;
    padding: 15px 0;
}

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

nav a {
    color: white;
    margin-left: 20px;
    text-decoration: none;
}

.logo {
    color: #00b4d8;
}

/* BUTTON */
.btn {
    background: #00b4d8;
    color: white;
    padding: 10px 20px;
    border-radius: 5px;
    text-decoration: none;
}

.btn.secondary {
    background: transparent;
    border: 1px solid white;
}

/* HERO */
.hero {
    background: linear-gradient(to right, #0d1b2a, #1b263b);
    color: white;
    padding: 100px 0;
    text-align: center;
}

.hero h1 {
    font-size: 40px;
}

.hero p {
    margin: 20px 0;
}

.buttons a {
    margin: 10px;
}

/* SECTIONS */
section {
    padding: 60px 0;
    text-align: center;
}

h2 {
    margin-bottom: 30px;
}

/* GRID */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

/* CARD */
.card {
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: 0.3s;
}

.card:hover {
    transform: translateY(-5px);
}

/* WHY */
.why {
    background: #e0f7fa;
}

/* PORTFOLIO */
.portfolio {
    background: #edf2f4;
}

/* CTA */
.cta {
    background: #00b4d8;
    color: white;
    padding: 60px 0;
}

/* FOOTER */
footer {
    background: #0d1b2a;
    color: white;
    text-align: center;
    padding: 20px;
}