/*
SimpleHTMLSkeleton index page styles
Purpose: lightweight hub styling that supports the Bare Bones progression.
*/

:root {
    --bg: #f5f8fc;
    --surface: #ffffff;
    --text: #1f2937;
    --muted: #4b5563;
    --border: #d8e0eb;
    --accent: #0b63ce;
    --accent-strong: #084a9c;
    --focus: #f59e0b;
    --radius: 12px;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text);
    background: linear-gradient(180deg, #f8fbff 0%, var(--bg) 100%);
}

.skip-link {
    position: absolute;
    left: -9999px;
    top: 0;
    background: #111827;
    color: #ffffff;
    padding: 0.5rem 0.75rem;
}

.skip-link:focus {
    left: 1rem;
    top: 0.5rem;
    z-index: 1000;
}

.container {
    width: min(100% - 2rem, 980px);
    margin-inline: auto;
}

header,
main,
footer {
    margin-block: 1rem;
}

header,
main > section,
footer {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1rem 1.1rem;
}

.brand-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    color: var(--text);
    text-decoration: none;
    font-weight: 700;
}

.brand img {
    width: 34px;
    height: 34px;
}

h1,
h2,
h3 {
    line-height: 1.25;
    margin-top: 0;
}

.subtitle {
    color: var(--muted);
}

.nav-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

main > section {
    margin-bottom: 1rem;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 0.8rem;
}

.card {
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 0.85rem;
    background: #fbfdff;
}

.card h3 {
    margin-bottom: 0.45rem;
}

a {
    color: var(--accent);
}

a:hover {
    color: var(--accent-strong);
}

a:focus-visible,
button:focus-visible {
    outline: 3px solid var(--focus);
    outline-offset: 2px;
}

.meta {
    color: var(--muted);
    font-size: 0.95rem;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
}

@media (max-width: 640px) {
    .container {
        width: min(100% - 1rem, 980px);
    }

    .brand-row {
        flex-direction: column;
        align-items: flex-start;
    }
}