:root {
  --bg: #f6f6f8;
  --card: #ffffff;
  --text: #1c1c21;
  --muted: #6b6b76;
  --line: #e3e3e8;
  --accent: #4f46e5;
  --accent-text: #ffffff;
  --ok: #15803d;
  --bad: #b91c1c;
  --warn: #a16207;
  --radius: 12px;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #131316;
    --card: #1c1c21;
    --text: #ececf1;
    --muted: #9a9aa6;
    --line: #2e2e36;
    --accent: #818cf8;
    --accent-text: #111;
    --ok: #4ade80;
    --bad: #f87171;
    --warn: #facc15;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
a { color: var(--accent); }
code { font: 0.9em ui-monospace, SFMono-Regular, Menlo, monospace; background: var(--line); padding: 0.1em 0.35em; border-radius: 4px; }
h1 { font-size: 1.6rem; margin: 0 0 0.5rem; }
h2 { font-size: 1.15rem; margin: 0 0 0.75rem; }

.top {
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  max-width: 760px; margin: 0 auto; padding: 1rem;
}
.brand { font-weight: 800; font-size: 1.3rem; text-decoration: none; color: var(--text); letter-spacing: -0.02em; }
nav { display: flex; gap: 1rem; align-items: center; }
nav a { color: var(--muted); text-decoration: none; }
nav a.on { color: var(--text); font-weight: 600; }
main { max-width: 760px; margin: 0 auto; padding: 0 1rem 4rem; display: grid; gap: 1.25rem; }

.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.25rem; }
.card.center { text-align: center; max-width: 460px; margin: 3rem auto 0; width: 100%; display: grid; gap: 0.75rem; justify-items: center; }
.muted { color: var(--muted); }
.small { font-size: 0.875rem; }
.ok { color: var(--ok); font-weight: 600; }
.bad, .error { color: var(--bad); }
.status { min-height: 1.5em; margin: 0; color: var(--bad); }
.row { display: flex; gap: 0.5rem; align-items: center; flex-wrap: wrap; }

button, .button, select, input {
  font: inherit; color: inherit; border-radius: 8px;
}
button, .button {
  border: 1px solid var(--line); background: var(--card); padding: 0.45rem 0.9rem; cursor: pointer; text-decoration: none; display: inline-block; white-space: nowrap;
}
button:hover:not(:disabled), .button:hover { border-color: var(--muted); }
button:disabled { opacity: 0.5; cursor: default; }
button.primary, .button.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-text); font-weight: 600; }
button.big { padding: 0.7rem 1.4rem; font-size: 1.05rem; }
button.link { border: none; background: none; padding: 0; color: var(--muted); text-decoration: underline; }
button.danger, button.link.danger { color: var(--bad); }
button.chip { padding: 0.1rem 0.6rem; border-radius: 999px; font-size: 0.875rem; margin-right: 0.25rem; }
input, select { border: 1px solid var(--line); background: var(--bg); padding: 0.45rem 0.6rem; }
input:focus, select:focus, button:focus-visible, .drop:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* publish */
.drop {
  border: 2px dashed var(--line); border-radius: var(--radius); padding: 2rem 1rem; text-align: center; cursor: pointer;
  display: grid; gap: 0.5rem; justify-items: center; transition: border-color 0.15s, background 0.15s;
}
.drop strong { font-size: 1.15rem; }
.drop p { margin: 0; color: var(--muted); }
.drop.over, .drop:hover { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 6%, transparent); }
.step, .done { display: grid; gap: 0.75rem; }
.address { display: flex; align-items: center; gap: 0.15rem; font-size: 1.15rem; flex-wrap: wrap; }
.address input.name { font-size: 1.15rem; font-weight: 600; min-width: 8ch; max-width: 100%; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }
.name-status { min-height: 1.6em; }
.problems { display: grid; gap: 0.4rem; }
.problem { border-left: 3px solid var(--line); padding: 0.3rem 0.7rem; display: grid; font-size: 0.925rem; }
.problem.error { border-color: var(--bad); }
.problem.warning { border-color: var(--warn); }
.problem .hint, .hint { color: var(--muted); font-size: 0.875rem; }
.big-link { font-size: 1.3rem; font-weight: 700; word-break: break-all; }
.qr-panel { display: flex; gap: 1rem; align-items: center; flex-wrap: wrap; }
.qr { width: 160px; height: 160px; border-radius: 8px; image-rendering: pixelated; }

/* app list */
.apps { display: grid; gap: 0.6rem; }
.app { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 0.9rem 1.1rem; display: grid; grid-template-columns: 1fr auto; gap: 0.5rem 1rem; align-items: center; }
.app.paused { opacity: 0.75; }
.app-name { font-weight: 650; font-size: 1.05rem; text-decoration: none; }
.app-actions { display: flex; gap: 0.35rem; }
.app .panel { grid-column: 1 / -1; }
.app .panel:empty { display: none; }
.badge { display: inline-block; font-size: 0.75rem; padding: 0.05rem 0.5rem; border-radius: 999px; background: var(--line); margin-left: 0.5rem; vertical-align: middle; }
.versions { list-style: none; margin: 0.5rem 0 0; padding: 0; display: grid; gap: 0.35rem; font-size: 0.925rem; }
.versions li { display: flex; justify-content: space-between; gap: 1rem; align-items: center; padding: 0.35rem 0; border-top: 1px solid var(--line); }
.more { display: grid; gap: 0.75rem; margin-top: 0.5rem; }
.more-row { display: flex; justify-content: space-between; gap: 1rem; align-items: flex-start; border-top: 1px solid var(--line); padding-top: 0.75rem; }
.more-row p { margin: 0.2rem 0 0.5rem; }

/* settings, device */
.list { list-style: none; padding: 0; margin: 0 0 1rem; display: grid; gap: 0.4rem; }
.list li { display: flex; justify-content: space-between; gap: 1rem; align-items: center; border-top: 1px solid var(--line); padding-top: 0.4rem; }
.code { font: 600 1.4rem ui-monospace, monospace; text-align: center; letter-spacing: 0.1em; width: 12ch; text-transform: uppercase; }
.code-show { font: 700 2rem ui-monospace, monospace; letter-spacing: 0.15em; margin: 0; }

@media (max-width: 560px) {
  .app { grid-template-columns: 1fr; }
  nav { gap: 0.75rem; font-size: 0.925rem; }
}