:root {
  --bg: #f6f7f9;
  --surface: #ffffff;
  --text: #16191d;
  --muted: #5e6670;
  --border: #dde1e6;
  --accent: #1f5fbf;
  --accent-text: #ffffff;
  --found: #177245;
  --found-bg: #e6f4ec;
  --missing: #b3261e;
  --missing-bg: #fbeae9;
  --empty: #6b7280;
  --empty-bg: #eef0f3;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #111418;
    --surface: #1a1e24;
    --text: #e8eaed;
    --muted: #9aa3ad;
    --border: #2c323a;
    --accent: #5b93e6;
    --accent-text: #0b0d10;
    --found: #5fcf94;
    --found-bg: #15291f;
    --missing: #f08a82;
    --missing-bg: #321a19;
    --empty: #9aa3ad;
    --empty-bg: #21262d;
    color-scheme: dark;
  }
}

:root[data-theme="dark"] {
  --bg: #111418;
  --surface: #1a1e24;
  --text: #e8eaed;
  --muted: #9aa3ad;
  --border: #2c323a;
  --accent: #5b93e6;
  --accent-text: #0b0d10;
  --found: #5fcf94;
  --found-bg: #15291f;
  --missing: #f08a82;
  --missing-bg: #321a19;
  --empty: #9aa3ad;
  --empty-bg: #21262d;
  color-scheme: dark;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif;
}

.wrap { max-width: 860px; margin: 0 auto; padding: 40px 16px 64px; }

.head { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; }
.head h1 { margin: 0 0 4px; font-size: 1.75rem; letter-spacing: -0.01em; }
.sub { margin: 0 0 28px; color: var(--muted); }

.lists, .uploads { display: grid; gap: 12px; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); }
.uploads { margin-top: 24px; }

.list-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 16px;
}
.list-card h2 { margin: 0 0 6px; font-size: 1rem; }
.list-card .count { margin: 0; font-weight: 600; }
.list-card .meta { margin: 2px 0 0; color: var(--muted); font-size: 0.85rem; overflow-wrap: anywhere; }
.list-card.is-empty .count { color: var(--empty); }

.search { margin-top: 32px; }
label { display: block; font-weight: 600; margin-bottom: 6px; }
.search-row { display: flex; gap: 8px; }

input[type="text"], input[type="password"] {
  flex: 1;
  min-width: 0;
  width: 100%;
  padding: 11px 12px;
  font: 15px var(--mono);
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
}
input:focus-visible, button:focus-visible, a:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

button {
  padding: 11px 20px;
  font: inherit;
  font-weight: 600;
  color: var(--accent-text);
  background: var(--accent);
  border: 0;
  border-radius: 8px;
  cursor: pointer;
}
.theme-toggle {
  flex: none;
  padding: 8px 14px;
  font-size: 0.85rem;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border);
}

button:disabled { opacity: 0.6; cursor: progress; }

.hint { margin: 8px 0 0; color: var(--muted); font-size: 0.85rem; }
.message { margin: 20px 0 0; padding: 10px 14px; border-radius: 8px; background: var(--missing-bg); color: var(--missing); }

.results { margin-top: 24px; display: grid; gap: 10px; }
.query { margin: 0 0 4px; color: var(--muted); font-size: 0.85rem; overflow-wrap: anywhere; }

.result { border-radius: 10px; padding: 12px 16px; border: 1px solid var(--border); background: var(--surface); }
.result-head { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.result-head h2 { margin: 0; font-size: 1rem; }
.result-icon {
  display: inline-grid; place-items: center;
  width: 24px; height: 24px; border-radius: 50%;
  font-weight: 700; font-size: 0.85rem;
}
.result-status { margin-left: auto; font-weight: 600; }
.is-found .result-icon { background: var(--found-bg); color: var(--found); }
.is-found .result-status { color: var(--found); }
.is-found { border-color: var(--found); }
.is-missing .result-icon { background: var(--missing-bg); color: var(--missing); }
.is-missing .result-status { color: var(--missing); }
.is-empty .result-icon { background: var(--empty-bg); color: var(--empty); }
.is-empty .result-status { color: var(--empty); }

.match { margin-top: 12px; padding-top: 12px; border-top: 1px solid var(--border); }
.match-subject { margin: 0 0 8px; font-weight: 500; overflow-wrap: anywhere; }
.match dl { margin: 0; display: grid; grid-template-columns: max-content 1fr; gap: 4px 16px; font-size: 0.9rem; }
.match dt { color: var(--muted); }
.match dd { margin: 0; overflow-wrap: anywhere; }
.mono { font-family: var(--mono); font-size: 0.85rem; }

.field { max-width: 360px; }
.upload-slot { display: grid; gap: 8px; align-content: start; }
.upload-form { display: grid; gap: 8px; }
.upload-form input[type="file"] { font-size: 0.85rem; color: var(--muted); max-width: 100%; }
.upload-status { margin: 0; font-size: 0.85rem; color: var(--muted); min-height: 1.3em; }
.upload-status.ok { color: var(--found); }
.upload-status.err { color: var(--missing); }

.foot { margin-top: 40px; font-size: 0.9rem; }
.foot a { color: var(--accent); }

@media (max-width: 520px) {
  .wrap { padding-top: 24px; }
  .search-row { flex-direction: column; }
  .match dl { grid-template-columns: 1fr; gap: 0; }
  .match dd { margin-bottom: 6px; }
}