/* Reset & base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
html {
    scroll-behavior: smooth;
}
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    line-height: 1.7;
    color: #222;
    background-color: #fafafa;
}
a {
    color: inherit;
    text-decoration: none;
}
ul {
    list-style: none;
}
.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* Header */
.site-header {
    background: #fff;
    border-bottom: 1px solid #eee;
    position: sticky;
    top: 0;
    z-index: 1000;
    height: 4.5rem;
}
.site-header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}
.logo {
    font-size: 1.25rem;
    font-weight: 600;
    color: #111;
}
.nav ul {
    display: flex;
    gap: 1.5rem;
}
.nav a {
    font-weight: 500;
    color: #555;
    transition: color .2s;
}
.nav a:hover {
    color: #111;
}

/* Hero */
.hero {
    text-align: center;
    padding: 6rem 1rem 4rem;
    background: #fff;
}
.hero h2 {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #111;
}
.hero p {
    font-size: 1.1rem;
    color: #555;
    max-width: 38rem;
    margin: 0 auto 2rem;
}
.btn-primary {
    display: inline-block;
    background: #00695c; /* teal-ish accent */
    color: #fff;
    padding: .75rem 1.5rem;
    border-radius: 4px;
    font-weight: 600;
    text-decoration: none;
    transition: background .2s;
}
.btn-primary:hover {
    background: #004d40;
}

/* Features */
.features {
    background: #fff;
    padding: 4rem 1rem;
}
.features h2,
.about h2,
.contact h2 {
    text-align: center;
    margin-bottom: 2.5rem;
    color: #111;
    font-size: 1.8rem;
    font-weight: 600;
}
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 2rem;
}
.feature-card {
    background: #fafafa;
    border: 1px solid #eee;
    border-radius: 6px;
    padding: 2rem;
    text-align: center;
    transition: transform .2s, box-shadow .2s;
}
.feature-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,.05);
}
.feature-card h3 {
    margin-bottom: .75rem;
    color: #111;
    font-size: 1.125rem;
    font-weight: 600;
}
.feature-card p {
    color: #666;
    line-height: 1.6;
}

/* About */
.about {
    background: #fafafa;
    padding: 4rem 1rem;
}
.about p {
    max-width: 38rem;
    margin: 0 auto;
    text-align: center;
    color: #555;
    line-height: 1.7;
}

/* Contact */
.contact {
    background: #fff;
    padding: 4rem 1rem;
}
.contact form {
    display: grid;
    gap: 1.5rem;
    max-width: 38rem;
    margin: 0 auto;
}
.form-group {
    display: flex;
    flex-direction: column;
}
.form-group label {
    margin-bottom: .4rem;
    font-weight: 500;
    color: #222;
}
.form-group input,
.form-group textarea {
    padding: .85rem;
    border: 1px solid #ccc;
    border-radius: 4px;
    font: inherit;
    background: #fff;
}
.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #00695c;
    box-shadow: 0 0 0 2px rgba(0,105,92,.2);
}
#form-status {
    margin-top: 1rem;
    font-weight: 500;
    text-align: center;
    min-height: 1.5em;
}
#form-status.success { color: #00695c; }
#form-status.error { color: #c62828; }

/* Footer */
.site-footer {
    background: #fff;
    border-top: 1px solid #eee;
    color: #555;
    text-align: center;
    padding: 1.5rem 1rem;
    font-size: .9rem;
}

/* Mobile adjustments */
@media (max-width: 600px) {
    .nav {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: #fff;
        border-top: 1px solid #eee;
        max-height: 0;
        overflow: hidden;
        transition: max-height .3s ease-out;
    }
    .nav.open {
        max-height: 200px;
    }
    .nav ul {
        flex-direction: column;
        align-items: stretch;
        padding: 1rem 0;
    }
    .nav a {
        padding: .75rem 1rem;
        text-align: left;
        border-top: 1px solid #eee;
    }
    .nav a:first-child {
        border-top: none;
    }
    /* Hamburger button placeholder – we can add via JS later if needed */
}