/* Public site — plain CSS (AD-010 default; no framework, no Pico). */

:root {
  --bg: #fbfbfd;
  --fg: #1a1a1f;
  --muted: #5a5a66;
  --border: #e2e2ea;
  --accent: #6c2bd9;
  --accent-fg: #ffffff;
  --card: #ffffff;
  --radius: 10px;
  --maxw: 64rem;
  font-size: 16px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #121218;
    --fg: #ececf2;
    --muted: #a0a0b0;
    --border: #2a2a36;
    --accent: #a684ff;
    --accent-fg: #16121f;
    --card: #1b1b24;
  }
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--bg);
  color: var(--fg);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  line-height: 1.55;
}

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

/* Skip link — visually hidden until focused (keyboard bypass, WCAG 2.4.1). */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  padding: 0.5rem 1rem;
  background: var(--accent);
  color: var(--accent-fg);
  border-radius: 0 0 8px 0;
  z-index: 10;
}
.skip-link:focus {
  left: 0;
}

/* Header / nav */
.site-header {
  border-bottom: 1px solid var(--border);
  background: var(--card);
}
.site-nav {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0.75rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}
.site-brand {
  font-weight: 700;
  font-size: 1.1rem;
  text-decoration: none;
  color: var(--fg);
}
.site-nav-links {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin: 0;
  padding: 0;
  list-style: none;
  flex-wrap: wrap;
}
.site-nav-links a {
  text-decoration: none;
  color: var(--muted);
}
.site-nav-links a:hover,
.site-nav-links a[aria-current="page"] {
  color: var(--fg);
}
.site-nav-links a[aria-current="page"] {
  font-weight: 600;
}

/* Main + footer */
.site-main {
  flex: 1;
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 2rem 1rem;
}
.site-footer {
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.875rem;
}
.site-footer p {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 1rem;
}

/* Cards / panels */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
}
.card + .card {
  margin-top: 1rem;
}

/* Forms */
.auth-card {
  max-width: 26rem;
  margin: 1rem auto;
}
form label {
  display: block;
  margin: 0.75rem 0 0.25rem;
  font-weight: 600;
  font-size: 0.9rem;
}
input[type="email"],
input[type="password"],
input[type="text"] {
  width: 100%;
  padding: 0.55rem 0.7rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  color: var(--fg);
  font-size: 1rem;
}
input:focus-visible,
button:focus-visible,
a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

button,
.button {
  display: inline-block;
  margin-top: 1rem;
  padding: 0.55rem 1.1rem;
  border: none;
  border-radius: 8px;
  background: var(--accent);
  color: var(--accent-fg);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
}
button:disabled,
.button[aria-disabled="true"] {
  opacity: 0.55;
  cursor: not-allowed;
}
.inline-form {
  display: inline;
  margin: 0;
}
/* Nav "Log out" submit styled as a link so it sits with the other nav items. */
.link-button {
  margin: 0;
  padding: 0;
  background: none;
  border: none;
  color: var(--muted);
  font: inherit;
  cursor: pointer;
}
.link-button:hover {
  color: var(--fg);
}

/* Flash messages */
.flash {
  margin: 0 0 1.5rem;
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  border-left: 4px solid var(--border);
}
.flash-success {
  border-left-color: #2e7d32;
  background: #e8f5e9;
  color: #1b5e20;
}
.flash-error {
  border-left-color: #c62828;
  background: #ffebee;
  color: #b71c1c;
}
.flash-info {
  border-left-color: #1565c0;
  background: #e3f2fd;
  color: #0d47a1;
}
@media (prefers-color-scheme: dark) {
  .flash-success {
    background: #1b3a1d;
    color: #c8e6c9;
  }
  .flash-error {
    background: #3a1414;
    color: #ffcdd2;
  }
  .flash-info {
    background: #0d2238;
    color: #bbdefb;
  }
}

/* Library / entitlement grid */
.entitlement-list {
  list-style: none;
  margin: 1rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.75rem;
}
.entitlement-list li {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.85rem 1rem;
  background: var(--card);
}
.entitlement-sku {
  font-weight: 600;
}
.entitlement-meta {
  color: var(--muted);
  font-size: 0.85rem;
  margin-top: 0.25rem;
}
.empty-state {
  color: var(--muted);
  margin-top: 1rem;
}

/* Download platform cards */
.platform-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr));
  margin-top: 1.5rem;
  list-style: none;
  padding: 0;
}
.platform-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  background: var(--card);
}
.platform-card.detected {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent);
}
.platform-card h3 {
  margin: 0 0 0.5rem;
}
.coming-soon {
  display: inline-block;
  margin-top: 1rem;
  padding: 0.4rem 0.75rem;
  border-radius: 999px;
  background: var(--border);
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 600;
}

/* Changelog */
.changelog-entry {
  border-bottom: 1px solid var(--border);
  padding: 1.25rem 0;
}
.changelog-entry:first-of-type {
  padding-top: 0;
}
.changelog-entry:last-of-type {
  border-bottom: none;
}
.changelog-version {
  margin: 0;
  font-size: 1.2rem;
}
.changelog-date {
  color: var(--muted);
  font-size: 0.85rem;
}
.changelog-notes {
  margin-top: 0.5rem;
}
.changelog-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1rem 0 1.5rem;
  border-bottom: 1px solid var(--border);
  padding-bottom: 0.75rem;
}
.changelog-tab {
  padding: 0.35rem 0.85rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  color: var(--muted);
  text-decoration: none;
  font-size: 0.9rem;
}
.changelog-tab:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.changelog-tab.active {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-fg);
}