/* polarisneo.net */

:root {
    --bg: #1f2937;
    --surface: #111827;
    --text: #e5e7eb;
    --muted: #9ca3af;
    --accent: #93c5fd;
    --accent-hover: #bfdbfe;
    --radius: 8px;
}

/* Reset */
*, *::before, *::after { box-sizing: border-box; }
body, h1, h2, h3, p, ul { margin: 0; padding: 0; }
ul { list-style: none; }
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }

body {
    background: var(--bg);
    color: var(--text);
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

.page {
    /* Sized so cards land at ~310px, matching the 320px thumbnail YouTube serves */
    max-width: 1060px;
    margin: 0 auto;
    padding: 3rem 1.25rem;
}

/* Hero */
.hero {
    text-align: center;
    margin-bottom: 4rem;
}

.logo {
    width: min(100%, 420px);
    margin: 0 auto 1.5rem;
}

.tagline {
    max-width: 46ch;
    margin: 0 auto;
    color: var(--muted);
}

.actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 1rem 1.5rem;
    margin-top: 2rem;
}

.button {
    background: var(--accent);
    color: var(--surface);
    font-weight: 600;
    padding: 0.6rem 1.25rem;
    border-radius: var(--radius);
    transition: background-color 0.15s;
}

.button:hover,
.button:focus-visible { background: var(--accent-hover); }

.link {
    color: var(--accent);
    transition: color 0.15s;
}

.link:hover,
.link:focus-visible { color: var(--accent-hover); }

/* Videos */
.videos h2 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
}

.video-grid {
    display: grid;
    /* Capped at 320px so the 320px-wide YouTube thumbnail is never upscaled,
       which keeps 1x displays on the 18KB image instead of the 173KB one */
    grid-template-columns: repeat(auto-fill, minmax(min(280px, 100%), 320px));
    justify-content: center;
    gap: 2rem 1.5rem;
}

.video a {
    display: block;
    border-radius: var(--radius);
}

.video-thumb {
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    border-radius: var(--radius);
    background: var(--surface);
    transition: opacity 0.15s;
}

.video a:hover .video-thumb,
.video a:focus-visible .video-thumb { opacity: 0.8; }

.video-title {
    font-size: 1rem;
    font-weight: 600;
    margin-top: 0.75rem;
}

.video a:hover .video-title,
.video a:focus-visible .video-title { color: var(--accent); }

.video-meta {
    color: var(--muted);
    font-size: 0.875rem;
}

/* Footer */
.footer {
    margin-top: 4rem;
    color: var(--muted);
    font-size: 0.875rem;
    text-align: center;
}

/* Keep focus rings visible for keyboard users */
a:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
}

@media (prefers-reduced-motion: reduce) {
    * { transition: none !important; }
}