/* Base layout */
body {
    margin: 0;
    padding: 0;
    font-family: "Segoe UI", sans-serif;
    background: #f7f9fa;
    color: #2f3e46;
    line-height: 1.7;
}

/* Navigation */
nav {
    background: #dce7e4;
    padding: 15px;
    border-bottom: 1px solid #c3d4cf;
}

nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    font-size: 1.05rem;
}

nav a {
    color: #2f3e46;
    text-decoration: none;
    font-weight: 500;
}

nav a:hover {
    text-decoration: underline;
}

/* Header */
header {
    background: #dce7e4;
    padding: 40px 20px;
    text-align: center;
    border-bottom: 1px solid #c3d4cf;
}

header h1 {
    margin: 0;
    font-size: clamp(1.8rem, 4vw, 2.4rem);
    color: #2f3e46;
}

header p {
    max-width: 800px;
    margin: 10px auto 0;
    font-size: 1.05rem;
}

/* Content container */
.container {
    max-width: 900px;
    margin: 40px auto;
    padding: 0 20px;
}

/* Sections */
.section {
    margin-bottom: 40px;
}

/* Images */
.section img,
img.responsive {
    width: 100%;
    height: auto;
    border-radius: 12px;
    margin: 20px 0;
}

/* Headings */
h2 {
    color: #3a4f52;
    font-size: clamp(1.4rem, 3vw, 1.8rem);
    margin-bottom: 10px;
}

/* Lists */
ul {
    padding-left: 20px;
}

li {
    margin-bottom: 6px;
}

/* Highlight box */
.highlight {
    background: #eef5f3;
    border-left: 4px solid #9bb7ae;
    padding: 12px 16px;
    border-radius: 8px;
    margin: 20px 0;
}

/* Footer */
footer {
    text-align: center;
    padding: 30px;
    background: #dce7e4;
    margin-top: 40px;
    border-top: 1px solid #c3d4cf;
    font-size: 0.95rem;
}

/* Mobile tweaks */
@media (max-width: 600px) {
    nav ul {
        flex-direction: column;
        gap: 10px;
    }

    .container {
        margin: 30px auto;
        padding: 0 16px;
    }

    .section {
        margin-bottom: 30px;
    }
}