:root {
  --accent: #e4572e;
  --bg: #f4f4f2;
  --card: #ffffff;
  --fg: #1b1b1d;
  --muted: #666670;
  --border: rgba(0, 0, 0, 0.12);
  --ok: #1d8a4a;
  --err: #c0362c;
  --warn: #a86b00;
  color-scheme: light dark;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111113;
    --card: #1b1b1f;
    --fg: #f1f1f3;
    --muted: #a0a0aa;
    --border: rgba(255, 255, 255, 0.14);
    --ok: #4cc27a;
    --err: #ff7a6e;
    --warn: #f0b44a;
  }
}
*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
a { color: var(--accent); }
code, pre { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 0.9em; }
pre { background: var(--bg); padding: 10px; border-radius: 8px; overflow: auto; }

.topbar {
  display: flex; justify-content: space-between; align-items: center; gap: 12px;
  padding: 12px 20px; background: var(--card); border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 5;
}
.topbar nav { display: flex; gap: 16px; align-items: center; }

.wrap { max-width: 760px; margin: 0 auto; padding: 20px 16px 120px; }
.card {
  background: var(--card); border: 1px solid var(--border); border-radius: 14px;
  padding: 18px 20px 20px; margin-bottom: 16px;
}
.card.narrow { max-width: 380px; margin: 40px auto; }
h1, h2 { margin: 0 0 8px; line-height: 1.25; }
h1 { font-size: 1.35rem; }
h2 { font-size: 1.1rem; }

label { display: block; font-weight: 600; margin: 14px 0 6px; }
label small, .check small { font-weight: 400; color: var(--muted); }
.check small { display: block; }
.req { color: var(--err); }
.muted { color: var(--muted); }

input[type="text"], input[type="url"], input[type="password"], input[type="number"], textarea {
  width: 100%; padding: 10px 12px; border: 1px solid var(--border); border-radius: 9px;
  background: var(--bg); color: var(--fg); font: inherit;
}
textarea { resize: vertical; min-height: 90px; }
input:focus, textarea:focus { outline: 2px solid var(--accent); outline-offset: 1px; }

.row { display: flex; gap: 8px; align-items: stretch; }
.row input[type="url"] { flex: 1; min-width: 0; }
.color-row { align-items: center; }
input[type="color"] { width: 56px; height: 40px; padding: 2px; border: 1px solid var(--border); border-radius: 8px; background: var(--bg); }

.check { display: flex; gap: 10px; align-items: flex-start; font-weight: 600; margin-top: 16px; }
.check input { margin-top: 4px; width: 18px; height: 18px; accent-color: var(--accent); flex: none; }

button, .button, .file-btn span {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 9px 16px; border-radius: 9px; border: 1px solid var(--border);
  background: var(--card); color: var(--fg); font: inherit; cursor: pointer; text-decoration: none; white-space: nowrap;
}
button:hover, .button:hover, .file-btn span:hover { border-color: var(--accent); }
button:disabled { opacity: 0.6; cursor: progress; }
button.primary { background: var(--accent); border-color: var(--accent); color: #fff; font-weight: 600; }
button.danger { color: var(--err); }
button.link { border: none; background: none; padding: 0; color: var(--accent); text-decoration: underline; }
#loginForm button { margin-top: 14px; width: 100%; }

.file-btn { display: inline-block; margin: 0; font-weight: 400; }
.file-btn input { position: absolute; width: 1px; height: 1px; opacity: 0; }
.file-btn input:focus-visible + span { outline: 2px solid var(--accent); }

.cover-row { display: flex; gap: 16px; align-items: center; flex-wrap: wrap; }
.cover-row img { width: 96px; height: 96px; object-fit: cover; border-radius: 10px; border: 1px solid var(--border); }
.cover-actions { display: flex; gap: 8px; flex-wrap: wrap; }

.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 600px) { .grid2 { grid-template-columns: 1fr; } .row { flex-wrap: wrap; } }

.msg { min-height: 1.3em; margin: 8px 0 0; }
.msg.ok { color: var(--ok); }
.msg.err { color: var(--err); }

.test-result {
  margin-top: 10px; padding: 10px 12px; border-radius: 9px; border: 1px solid var(--border);
  background: var(--bg); font-size: 0.92rem;
}
.test-result.ok { border-color: var(--ok); }
.test-result.err { border-color: var(--err); }
.test-result dl { display: grid; grid-template-columns: max-content 1fr; gap: 2px 12px; margin: 0; }
.test-result dt { color: var(--muted); }
.test-result dd { margin: 0; overflow-wrap: anywhere; }
.test-result .warn { color: var(--warn); margin: 6px 0 0; }

.savebar {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 5;
  display: flex; gap: 10px; align-items: center; justify-content: flex-end;
  padding: 12px max(16px, calc((100vw - 760px) / 2 + 16px));
  background: var(--card); border-top: 1px solid var(--border);
}
.savebar .msg { margin: 0 auto 0 0; }