:root {
    --primary: #3a7f7f;
    --dark: #1c2b2b;
    --gray: #6b7c7c;
    --light: #f4f8f8;
}

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Arial;
    color: var(--dark);
}

/* NAV */
nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 50px;
    background: white;
    border-bottom: 1px solid #eee;
}

nav img { height: 60px; }

nav a {
    margin-left: 25px;
    text-decoration: none;
    color: var(--dark);
    font-weight: 500;
}

/* HERO */
.hero {
    position: relative;
    padding: 140px 20px;
    text-align: center;
    color: white;
    background: linear-gradient(135deg, #3a7f7f, #6fa9a9);
}

.hero h1 {
    font-size: 2.8em;
    max-width: 800px;
    margin: auto;
}

.hero p {
    max-width: 700px;
    margin: 20px auto;
}

.cta {
    display: inline-block;
    margin-top: 30px;
    padding: 14px 30px;
    background: white;
    color: var(--primary);
    text-decoration: none;
    border-radius: 6px;
    font-weight: 600;
}

/* SECTION */
section {
    padding: 90px 20px;
    max-width: 1100px;
    margin: auto;
}

/* GRID */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 25px;
}

/* CARD */
.card {
    background: #f8fbfb;
    padding: 30px;
    border-radius: 12px;
    border: 1px solid #e3eded;
}

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

/* ABOUT */
.about-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 50px;
}

.profile {
    width: 100%;
    max-width: 260px;
    border-radius: 10px;
}

/* CONTACT */
.contact-box {
    background: var(--light);
    padding: 30px;
    border-radius: 10px;
}

/* FORM */
form input, form textarea {
    width: 100%;
    padding: 14px;
    margin: 10px 0;
}

form button {
    background: var(--primary);
    color: white;
    padding: 14px;
    border: none;
    width: 100%;
}

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

footer a { color: #ccc; margin: 0 10px; }

/* MOBILE */
@media(max-width: 768px) {
    nav { flex-direction: column; }
    .about-grid { grid-template-columns: 1fr; }
}