:root {
  color-scheme: light dark;
  --bg: #faf9f5;
  --surface: #ffffff;
  --text: #1f1e1d;
  --muted: #6b6a66;
  --line: #e6e3da;
  --accent: #c6613f;
  --accent-text: #ffffff;
  --good: #2f7d4f;
  --bad: #b3362b;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1f1e1d;
    --surface: #2a2926;
    --text: #f2f0e8;
    --muted: #b0ada4;
    --line: #3d3b36;
    --accent: #d97757;
    --accent-text: #1f1e1d;
    --good: #6fc08d;
    --bad: #ef8a7e;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 -apple-system, BlinkMacSystemFont, "PingFang SC", "Microsoft YaHei", sans-serif;
}

.screen { max-width: 860px; margin: 0 auto; padding: 24px 16px 48px; }
.narrow { max-width: 480px; margin: 8vh auto 0; }

h1 { margin: 0 0 8px; font-size: 24px; }
h2 { margin: 0 0 8px; font-size: 18px; }
p { margin: 0 0 12px; }
.muted { color: var(--muted); }
.bad { color: var(--bad); }
.good { color: var(--good); }

.card {
  margin-top: 16px;
  padding: 16px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
}

button, .button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 16px;
  border: 0;
  border-radius: 10px;
  background: var(--accent);
  color: var(--accent-text);
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}

button.secondary, .button.secondary {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--line);
}

button.link {
  min-height: 32px;
  padding: 0 8px;
  background: transparent;
  color: var(--accent);
  font-weight: 500;
}

button:disabled { opacity: .55; cursor: default; }

.zone { padding: 8px 0; border-top: 1px solid var(--line); }
.zone .actions { align-items: center; margin-top: 0; }
.zone input[type="text"] { width: 96px; }

select {
  min-height: 44px;
  padding: 0 8px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--bg);
  color: var(--text);
  font: inherit;
}

input[type="text"] {
  width: 100%;
  min-height: 44px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--bg);
  color: var(--text);
  font: inherit;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip-path: inset(50%);
}

.actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }

.topbar { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; justify-content: space-between; }
.usage { color: var(--muted); font-size: 14px; }

.crumbs { display: flex; flex-wrap: wrap; align-items: center; margin-top: 12px; color: var(--muted); }

.list { margin: 12px 0 0; padding: 0; list-style: none; }
.row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 0;
  border-top: 1px solid var(--line);
}
.row:first-child { border-top: 0; }
.row .name {
  flex: 1 1 auto;
  min-width: 0;
  padding: 4px 0;
  border: 0;
  background: transparent;
  color: var(--text);
  font: inherit;
  text-align: left;
  overflow-wrap: anywhere;
  cursor: pointer;
}
.row .meta { flex: none; color: var(--muted); font-size: 13px; }
.row .tools { flex: none; display: flex; }

.code {
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--bg);
  font: 18px/1.7 ui-monospace, Menlo, Consolas, monospace;
  word-spacing: 6px;
  overflow-wrap: anywhere;
}

.progress { margin-top: 12px; color: var(--muted); font-size: 14px; overflow-wrap: anywhere; }

.preview {
  position: fixed;
  inset: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 16px;
  background: rgba(0, 0, 0, .85);
}
.preview img { flex: 1 1 auto; min-height: 0; object-fit: contain; }
.preview button { align-self: flex-end; }

.banner {
  margin-top: 12px;
  padding: 12px;
  border: 1px solid var(--bad);
  border-radius: 10px;
  color: var(--bad);
}

.toast {
  position: fixed;
  left: 16px;
  right: 16px;
  bottom: 16px;
  max-width: 520px;
  margin: 0 auto;
  padding: 12px 16px;
  border-radius: 10px;
  background: var(--text);
  color: var(--bg);
}

@media (max-width: 520px) {
  .row { flex-wrap: wrap; }
  .row .name { flex-basis: 100%; }
}