html, body {
    height: 100dvh;
}

body {
    font-family: Montserrat;
    background: white;
    /* use dynamic viewport units for more reliable mobile centering */
    min-height: 100dvh;
    margin: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}
.container {
    background: #fafafa;
    border-radius: 16px;
    box-shadow: 0 4px 24px rgba(0,0,0,0.12);
    padding: 32px 24px;
    max-width: 350px;
    /* width: 100%; */
    position: relative; /* allow absolute-positioned children (floating button) */
    margin: auto 0; /* center vertically when space allows */
    max-height: calc(100dvh - 48px);
    overflow: auto;
    text-align: center;
}
.logo {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    object-fit: cover;
    margin-bottom: 16px;
    border: 1px solid black;
}
h1 {
    margin: 0 0 8px 0;
    font-size: 2rem;
    color: black;
}
p {
    margin: 0 0 24px 0;
    color: #333;
}
.links {
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.link {
    background: #358464;
    color: #fff;
    text-decoration: none;
    padding: 12px;
    border-radius: .375rem;
    font-weight: 500;
    transition: background 0.2s;
}
.link:hover {
    background: rgb(102 204 154)
}
.social-icons {
    display: flex;
    justify-content: center;
    margin-bottom: 16px;
    gap: 12px;
}
.social-icon {
    color: black;
    font-size: 22px;
    transition: transform 0.2s;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.newsletter-list {
    list-style: none;
    padding: 0;
    margin: 0 0 16px 0; /* space below the list to match .links gap */
    display: grid;
    gap: 16px;
    /* responsive, mobile-first: auto-fit columns without media queries */
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    justify-items: center;
}

/* Thumbnail for newsletter PDFs */
.pdf-thumb {
    width: 100%;
    max-width: 220px; /* smaller thumbnail */
    height: auto;
    border-radius: 8px;
    box-shadow: 0 6px 18px rgba(0,0,0,0.12);
    display: block;
}
.pdf-thumb:hover {
    transform: translateY(-3px);
    transition: transform 0.18s ease;
}


/* Floating back-to-home button that sits over the bottom-right of the container */
.floating-back {
    position: fixed; /* fixed to viewport */
    right: 18px;
    bottom: 18px;
    background: #358464;
    color: #fff;
    text-decoration: none;
    padding: 10px 14px;
    border-radius: 999px;
    box-shadow: 0 8px 20px rgba(0,0,0,0.12);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    z-index: 30;
}
.floating-back:hover {
    background: rgb(102 204 154);
}

.newsletter-list li {
        width: 100%;
        display: flex;
        justify-content: center;
}

.newsletter-card {
        background: #fff;
        border-radius: 12px;
        padding: 12px;
        box-shadow: 0 6px 18px rgba(0,0,0,0.06);
        max-width: 280px;
        width: 100%;
        text-align: center;
        box-sizing: border-box;
}

.newsletter-card .pdf-thumb {
        max-width: 100%;
        height: auto;
        border-radius: 8px;
}

.newsletter-caption {
    margin-top: 8px;
    font-weight: 600;
    color: #222;
    text-decoration: none;
    display: block;
    cursor: pointer;
    padding: 6px 4px;
    border-radius: 6px;
}

.newsletter-caption:hover {
    background: rgba(53,132,100,0.06);
    text-decoration: none;
}