:root {
  --bg: #f6f7f9;
  --surface: #ffffff;
  --text: #1a1d23;
  --muted: #5c6570;
  --border: #d8dde3;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --danger: #dc2626;
  --danger-bg: #fef2f2;
  --ok: #16a34a;
  --chip: #eef2ff;
  --chip-text: #3730a3;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.06);
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC",
    "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1115;
    --surface: #181b22;
    --text: #e8eaed;
    --muted: #9aa3af;
    --border: #2c3340;
    --accent: #60a5fa;
    --accent-hover: #93c5fd;
    --danger: #f87171;
    --danger-bg: #3f1d1d;
    --ok: #4ade80;
    --chip: #1e293b;
    --chip-text: #93c5fd;
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.4);
  }
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  line-height: 1.5;
}

body {
  min-height: 100vh;
}

.wrap {
  max-width: 1100px;
  margin: 0 auto;
  padding: 1.25rem 1rem 2.5rem;
}

header {
  margin-bottom: 1rem;
}

header h1 {
  margin: 0 0 0.25rem;
  font-size: 1.5rem;
  font-weight: 700;
}

header p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
}

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  box-shadow: var(--shadow);
  padding: 1rem;
  margin-bottom: 1rem;
}

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
  margin-bottom: 0.75rem;
}

button,
.file-btn {
  appearance: none;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  border-radius: 8px;
  padding: 0.45rem 0.8rem;
  font-size: 0.9rem;
  cursor: pointer;
  font-family: inherit;
}

button.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}

@media (prefers-color-scheme: dark) {
  button.primary {
    color: #0b1220;
  }
}

button:hover,
.file-btn:hover {
  border-color: var(--accent);
}

button.primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
}

button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.file-btn {
  display: inline-flex;
  align-items: center;
}

.file-btn input {
  display: none;
}

#dropzone {
  border: 1.5px dashed var(--border);
  border-radius: 10px;
  padding: 0.85rem;
  text-align: center;
  color: var(--muted);
  margin-bottom: 0.75rem;
  transition: border-color 0.15s, background 0.15s;
}

#dropzone.dragover {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 8%, transparent);
  color: var(--text);
}

textarea#source {
  width: 100%;
  min-height: 140px;
  resize: vertical;
  font-family: var(--mono);
  font-size: 0.82rem;
  line-height: 1.45;
  padding: 0.75rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
}

.filters {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
}

@media (max-width: 720px) {
  .filters {
    grid-template-columns: 1fr;
  }
}

.field label {
  display: block;
  font-size: 0.8rem;
  color: var(--muted);
  margin-bottom: 0.25rem;
}

.field input {
  width: 100%;
  padding: 0.5rem 0.65rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font-family: inherit;
  font-size: 0.9rem;
}

.stats {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.stat {
  background: var(--chip);
  color: var(--chip-text);
  border-radius: 999px;
  padding: 0.2rem 0.7rem;
  font-size: 0.8rem;
  font-weight: 600;
}

.stat.warn {
  background: var(--danger-bg);
  color: var(--danger);
}

.list {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.row {
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg);
  overflow: hidden;
}

.row.bad {
  border-color: color-mix(in srgb, var(--danger) 45%, var(--border));
  background: var(--danger-bg);
}

.row-head {
  display: flex;
  gap: 0.6rem;
  align-items: flex-start;
  padding: 0.65rem 0.75rem;
  cursor: pointer;
  user-select: none;
}

.row-head:hover {
  filter: brightness(0.98);
}

.ln {
  flex: 0 0 auto;
  min-width: 2.4rem;
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--muted);
  padding-top: 0.15rem;
}

.badge {
  flex: 0 0 auto;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: lowercase;
  padding: 0.15rem 0.45rem;
  border-radius: 6px;
  background: var(--chip);
  color: var(--chip-text);
  margin-top: 0.1rem;
}

.badge.bad {
  background: var(--danger-bg);
  color: var(--danger);
}

.summary {
  flex: 1;
  min-width: 0;
  font-size: 0.9rem;
  word-break: break-word;
}

.chev {
  color: var(--muted);
  font-size: 0.85rem;
  padding-top: 0.1rem;
}

.row.open .chev {
  transform: rotate(90deg);
}

.detail {
  display: none;
  border-top: 1px solid var(--border);
  padding: 0.75rem;
  background: var(--surface);
}

.row.open .detail {
  display: block;
}

.detail pre {
  margin: 0;
  white-space: pre-wrap;
  word-break: break-word;
  font-family: var(--mono);
  font-size: 0.8rem;
  line-height: 1.45;
}

.empty {
  color: var(--muted);
  text-align: center;
  padding: 1.5rem 0.5rem;
}

.hint {
  font-size: 0.8rem;
  color: var(--muted);
  margin-top: 0.5rem;
}

footer {
  margin-top: 1.25rem;
  color: var(--muted);
  font-size: 0.8rem;
  text-align: center;
}

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