body {
    margin: 0;
    font-family: "Helvetica Neue", Arial, sans-serif;
    background: #fff;
    color: #333;
}

/* HEADER */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 40px;
    background: white;
    position: sticky;
    top: 0;
    border-bottom: 1px solid #eee;
    z-index: 1000;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    letter-spacing: 2px;
}

.nav a {
    margin-left: 20px;
    text-decoration: none;
    color: #333;
    font-weight: 500;
}

.nav a:hover {
    color: #555;
}

/* HERO */
.hero {
    background: url("https://via.placeholder.com/1600x900") center/cover no-repeat;
    height: 90vh;
    display: flex;
    align-items: center;
    padding-left: 60px;
    color: white;
    position: relative;
}

.hero::after {
    content: "";
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.45);
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 500px;
}

.hero h1 {
    font-size: 3.2rem;
    margin: 0;
}

.btn {
    display: inline-block;
    padding: 12px 28px;
    margin-top: 20px;
    background: black;
    color: white;
    text-decoration: none;
    border-radius: 5px;
}

.btn:hover {
    opacity: 0.85;
}

/* SECTIONS */
.section {
    padding: 80px 60px;
}

.section.dark {
    background: #f5f5f5;
}

h2 {
    margin-bottom: 40px;
    font-size: 2.4rem;
    letter-spacing: 1px;
    text-align: center;
}

/* GRID */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.card img {
    width: 100%;
    border-radius: 6px;
}

.card h3 {
    margin-top: 15px;
    font-size: 1.2rem;
    text-align: center;
}

.center-text {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 50px;
}

/* ABOUT */
.about-text {
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.7;
    text-align: center;
}

/* CONTACT FORM */
.contact-form {
    max-width: 600px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.contact-form input,
.contact-form textarea {
    padding: 15px;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 1rem;
}

.contact-form textarea {
    height: 150px;
}

/* FOOTER */
.footer {
    text-align: center;
    padding: 30px;
    background: #111;
    color: white;
    margin-top: 40px;
}