:root {
  --bg: #f5f6f8;
  --card: #ffffff;
  --text: #1c1f24;
  --muted: #6b7280;
  --line: #e3e6ea;
  --accent: #1f6feb;
  --accent-dark: #174ea6;
  --ok: #1a7f37;
  --warn-bg: #fff8e1;
  --warn-line: #f0c36d;
  --err-bg: #fdecea;
  --err-line: #e5484d;
  --code-bg: #f0f2f5;
}
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font: 15px/1.45 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--text); background: var(--bg);
}
h1 { font-size: 20px; margin: 0; }
h2 { font-size: 16px; margin: 0 0 8px; }
code, pre, textarea, .mono {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
code { background: var(--code-bg); padding: 1px 5px; border-radius: 4px; font-size: 13px; }
code.big { font-size: 15px; padding: 4px 8px; }
.muted { color: var(--muted); }
.small { font-size: 12.5px; }
.hidden { display: none !important; }
.grow { flex: 1; }
.row { display: flex; align-items: center; gap: 10px; margin-top: 12px; flex-wrap: wrap; }

.topbar {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 16px 24px; background: var(--card); border-bottom: 1px solid var(--line);
}
.topbar p { margin: 2px 0 0; }
.topbar-right { display: flex; align-items: center; gap: 10px; }
.pill { padding: 4px 10px; border-radius: 999px; font-size: 12.5px; border: 1px solid var(--line); }
.pill.ok { background: #e6f4ea; color: var(--ok); border-color: #b7e1c1; }
.pill.off { background: #f3f4f6; color: var(--muted); }

main { max-width: 1100px; margin: 0 auto; padding: 20px 24px 60px; }

.dropzone {
  border: 2px dashed #b9c0ca; border-radius: 12px; background: var(--card);
  padding: 34px 20px; text-align: center; cursor: pointer; transition: border-color .15s, background .15s;
}
.dropzone.over { border-color: var(--accent); background: #eef4ff; }
.dz-inner strong { font-size: 16px; }
.linklike { background: none; border: 0; color: var(--accent); cursor: pointer; font: inherit; padding: 0; text-decoration: underline; }

.toolbar { display: flex; align-items: center; gap: 12px; margin: 16px 0 6px; }
label.inline { display: inline-flex; align-items: center; gap: 6px; }

.btn {
  display: inline-flex; align-items: center; gap: 6px; padding: 8px 14px; border-radius: 8px;
  border: 1px solid #c9ced6; background: #fff; color: var(--text); cursor: pointer; font: inherit;
  text-decoration: none; line-height: 1.2;
}
.btn:hover { border-color: #9aa3af; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover { background: var(--accent-dark); border-color: var(--accent-dark); }
.btn.ghost { background: transparent; border-color: transparent; color: var(--muted); }
.btn.ghost:hover { background: #eef0f3; color: var(--text); }
.btn.small { padding: 4px 8px; font-size: 12.5px; }
.btn:disabled { opacity: .5; cursor: default; }

.card { background: var(--card); border: 1px solid var(--line); border-radius: 12px; margin-top: 14px; overflow: hidden; }
.card-head { display: flex; align-items: center; justify-content: space-between; padding: 12px 16px; border-bottom: 1px solid var(--line); gap: 12px; }
.file-meta { display: flex; flex-direction: column; min-width: 0; }
.fname { font-weight: 600; word-break: break-all; }
.card-actions { display: flex; align-items: center; gap: 8px; }
.status { font-size: 12.5px; color: var(--muted); }
.status.busy::before { content: ""; display: inline-block; width: 10px; height: 10px; border: 2px solid #c9ced6; border-top-color: var(--accent); border-radius: 50%; margin-right: 6px; animation: spin .8s linear infinite; vertical-align: -1px; }
.status.ok { color: var(--ok); }
.status.err { color: var(--err-line); }
@keyframes spin { to { transform: rotate(360deg); } }
.card-body { padding: 14px 16px 16px; }
.card-error { padding: 12px 16px; background: var(--err-bg); color: #8a1c1c; border-top: 1px solid var(--err-line); }

.grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px 16px; }
@media (max-width: 820px) { .grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 560px) { .grid { grid-template-columns: 1fr; } }
label { display: flex; flex-direction: column; gap: 4px; font-size: 13px; color: #374151; }
select, input[type=text], input[type=date], input[type=password] {
  font: inherit; font-size: 14px; padding: 7px 9px; border: 1px solid #c9ced6; border-radius: 8px; background: #fff; color: var(--text);
}
select:focus, input:focus, textarea:focus { outline: 2px solid #bcd3ff; border-color: var(--accent); }
.hint { min-height: 1em; }
.hint.good { color: var(--ok); }
.hint.bad { color: var(--err-line); }

fieldset.modes { border: 1px solid var(--line); border-radius: 10px; margin: 14px 0 0; padding: 8px 12px 10px; display: flex; flex-direction: column; gap: 6px; }
fieldset.modes legend { font-size: 12.5px; color: var(--muted); padding: 0 6px; }
fieldset.modes label { flex-direction: row; align-items: baseline; gap: 8px; font-size: 14px; color: var(--text); }
fieldset.modes label.disabled { opacity: .5; }

.chips { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 6px; }
.chips label { flex-direction: row; align-items: center; gap: 5px; border: 1px solid var(--line); border-radius: 999px; padding: 3px 10px; font-size: 12.5px; background: #fafbfc; }
.f-sections-wrap { margin-top: 12px; }

.analysis-warnings, .r-warnings, .r-problems { margin-top: 10px; display: flex; flex-direction: column; gap: 6px; }
.note { padding: 8px 12px; border-radius: 8px; font-size: 13px; border: 1px solid; }
.note.warn { background: var(--warn-bg); border-color: var(--warn-line); }
.note.err { background: var(--err-bg); border-color: var(--err-line); }
.note.ok { background: #e6f4ea; border-color: #b7e1c1; }
.r-drive { margin-top: 10px; }
.btn.primary:disabled { background: #a9bff0; border-color: #a9bff0; color: #fff; cursor: not-allowed; }
.note.info { background: #eef4ff; border-color: #bcd3ff; }

.filename-preview code { font-size: 14px; }

.result { margin-top: 16px; border-top: 1px solid var(--line); padding-top: 14px; }
.result-head { display: flex; gap: 20px; align-items: flex-start; flex-wrap: wrap; }
.r-target { margin-top: 4px; }
.tabs { display: flex; gap: 2px; border-bottom: 1px solid var(--line); margin-top: 12px; }
.tab { background: none; border: 0; border-bottom: 2px solid transparent; padding: 8px 12px; cursor: pointer; font: inherit; color: var(--muted); }
.tab.active { color: var(--text); border-bottom-color: var(--accent); }
.tabpane { padding-top: 10px; }
textarea.r-md { width: 100%; min-height: 420px; resize: vertical; font-size: 13px; line-height: 1.45; padding: 10px; border: 1px solid #c9ced6; border-radius: 8px; }
pre.r-raw { white-space: pre-wrap; word-break: break-word; background: var(--code-bg); padding: 12px; border-radius: 8px; max-height: 480px; overflow: auto; font-size: 12.5px; }

.chunk { border: 1px solid var(--line); border-radius: 8px; margin-bottom: 8px; overflow: hidden; }
.chunk-head { display: flex; justify-content: space-between; gap: 10px; padding: 6px 10px; background: #fafbfc; font-size: 12.5px; }
.chunk-head .sec { font-weight: 600; }
.chunk-head .sec.empty { color: var(--err-line); font-weight: 400; font-style: italic; }
.chunk pre { margin: 0; padding: 8px 10px; white-space: pre-wrap; word-break: break-word; font-size: 12.5px; max-height: 240px; overflow: auto; }
.chunk.big .chunk-head { background: var(--warn-bg); }

.help { margin-top: 26px; }
.help details { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 10px 16px; }
.help summary { cursor: pointer; font-weight: 600; }
.help ol { padding-left: 20px; }
.help li { margin: 6px 0; }

.login-body { display: grid; place-items: center; min-height: 100vh; }
.login-card { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 28px 30px; width: min(420px, 92vw); }
.login-card h1 { font-size: 18px; margin-bottom: 4px; }
.login-card form { display: flex; flex-direction: column; gap: 10px; margin-top: 18px; }
.error { color: var(--err-line); margin: 0; font-size: 13px; }