/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: Helvetica, Arial, sans-serif;
    line-height: 1.6;
    color: #000;
    background-color: #fff;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-content: center;
    text-align: left;
}

/* ── Header styles ── */
header {
    padding: 1.5rem 2rem 0.5rem;
    text-align: center;
}

.header-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    gap: 0.75rem;
}

.logo {
    font-size: 2rem;
    font-weight: normal;
    text-align: center;
    margin-bottom: 0.25rem;
}

/* ── Navigation as a list on top ── */
nav {
    width: 100%;
}

nav ul {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    list-style: none;
    gap: 1.2rem 2rem;
    padding: 0.4rem 0;
    margin: 0;
}

nav a {
    color: #000;
    text-decoration: none;
    font-size: 0.95rem;
    letter-spacing: 0.02em;
    padding-bottom: 0.15rem;
    border-bottom: 1px solid transparent;
    transition: border-color 0.2s;
}

nav a:hover {
    text-decoration: none;
    border-bottom: 1px solid #999;
}

/* ── Main content styles ── */
main {
    flex: 1;
    padding: 2rem;
    text-align: center;
    max-width: 700px;
    margin: 0 auto;
    width: 100%;
}

section {
    margin-bottom: 3rem;
}

h1 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    font-weight: bold;
    color: gray;
}

h2 {
    font-size: 1.2rem;
    margin-bottom: 1rem;
    color: gray;
}

h3 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: black;
}

a {
    text-decoration: none;
    color: black;
}

a:hover {
    text-decoration: underline;
}

b {
    color: gray;
    font-size: 1.1rem;
    text-decoration: none;
}

b:hover {
    text-decoration: underline;
}

p {
    margin-bottom: 1rem;
}

/* ── Footer styles ── */
footer {
    padding: 1.5rem 2rem;
    text-align: right;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
}

ul { 
    margin: 0px 0px 30px 0px; 
}

/* ── Responsive design ── */
@media (max-width: 768px) {
    header {
        padding: 1rem 1rem 0.25rem;
    }

    .logo {
        font-size: 1.6rem;
    }

    nav ul {
        gap: 0.6rem 1.2rem;
        font-size: 0.9rem;
    }

    main {
        padding: 1.5rem 1rem;
    }

    h1 {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    nav ul {
        gap: 0.4rem 0.8rem;
    }

    nav a {
        font-size: 0.82rem;
    }

    .logo {
        font-size: 1.4rem;
    }
}