:root {
  --bg: #f4f5f2;
  --card: #ffffff;
  --text: #1d2420;
  --muted: #5f6b65;
  --border: #d9ddd8;
  --accent: #2f6f5e;
  --accent-text: #ffffff;
  --accent-soft: #e2efe9;
  --row-alt: #f7f8f6;
  --input-bg: #ffffff;
  --change: #b5480f;
  --success: #2b7a3d;
  --warning: #9a6a00;
  --error: #b42318;
  --stop-text: #ffffff;
  --debug: #8b948f;
  --focus: #3d8b75;
  --radius: 10px;
  --shadow: 0 1px 2px rgba(20, 30, 25, .06), 0 2px 8px rgba(20, 30, 25, .04);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #141816;
    --card: #1c211e;
    --text: #e3e8e4;
    --muted: #9aa69f;
    --border: #2f3732;
    --accent: #5fb39a;
    --accent-text: #0e1512;
    --accent-soft: #23352e;
    --row-alt: #202622;
    --input-bg: #161a18;
    --change: #f08a4b;
    --success: #6cc581;
    --warning: #e0b44a;
    --error: #f2786d;
    --stop-text: #1a0d0b;
    --debug: #6f7a74;
    --focus: #7fcdb5;
    --shadow: none;
  }
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

[hidden] { display: none !important; }

h1, h2, h3 { margin: 0; font-weight: 600; }
h1 { font-size: 1.15rem; display: flex; align-items: center; gap: .5rem; }
h2 { font-size: 1.05rem; }
h3 { font-size: .95rem; }

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

.logo { width: 24px; height: 24px; }

.sr-only {
  position: absolute; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap;
}

/* ── layout ─────────────────────────────────────────────── */

.topbar {
  display: flex; align-items: center; gap: .75rem; flex-wrap: wrap;
  padding: .75rem 16px;
  background: var(--card);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 5;
}
.topbar .status { flex: 1; min-width: 0; }
@media (max-width: 520px) {
  .topbar h1 { flex: 1; }
  .topbar .status { order: 3; flex-basis: 100%; white-space: normal; }
}

main {
  max-width: 1100px;
  margin: 0 auto;
  padding: 16px;
  display: grid;
  gap: 16px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 16px;
  min-width: 0;
}

.card-head {
  display: flex; align-items: center; justify-content: space-between; gap: .75rem;
  margin-bottom: .75rem;
}
.card-head.wrap { flex-wrap: wrap; }

.buttons { display: flex; flex-wrap: wrap; gap: .5rem; margin-top: .75rem; }
.buttons.tight { margin-top: 0; }
.buttons.end { justify-content: flex-end; }

/* ── status ─────────────────────────────────────────────── */

.status {
  font-size: .9rem; color: var(--muted);
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.status.on { color: var(--success); font-weight: 600; }

/* ── controls ───────────────────────────────────────────── */

button {
  font: inherit;
  font-size: .92rem;
  padding: .45rem .85rem;
  min-height: 38px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  cursor: pointer;
}
button:hover { border-color: var(--muted); }
button:disabled { opacity: .5; cursor: default; }
button.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-text); font-weight: 600; }
button.primary.stop { background: var(--error); border-color: var(--error); color: var(--stop-text); }
button.quiet { background: transparent; }
button.small { min-height: 30px; padding: .2rem .6rem; font-size: .85rem; }

input, textarea {
  font: inherit;
  color: var(--text);
  background: var(--input-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: .5rem .6rem;
  width: 100%;
  min-width: 0;
}
textarea { resize: vertical; font-family: ui-monospace, "Cascadia Mono", Consolas, monospace; font-size: .92rem; }
input[type="checkbox"], input[type="radio"] { width: auto; accent-color: var(--accent); margin: 0; }
input[type="number"] { width: 4.2rem; padding: .3rem .4rem; }

:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }

label { display: block; font-weight: 500; font-size: .9rem; margin: .75rem 0 .25rem; }
label.check, label.inline {
  display: inline-flex; align-items: center; gap: .4rem;
  font-weight: 400; margin: 0;
}

.hint { color: var(--muted); font-size: .85rem; margin: .3rem 0 0; }
.msg { margin: .6rem 0 0; font-size: .9rem; min-height: 0; }
.msg:empty { display: none; }
.msg.error { color: var(--error); }
.msg.ok { color: var(--success); }

.form label.check { margin-top: .75rem; }
.two { display: grid; grid-template-columns: 1fr 1fr; gap: 0 .75rem; }

/* ── login ──────────────────────────────────────────────── */

.login { min-height: 100vh; display: grid; place-items: center; padding: 16px; }
.login-card { width: 100%; max-width: 360px; }
.login-card h1 { margin-bottom: .5rem; }
.login-card button { width: 100%; margin-top: 1rem; }

/* ── search links ───────────────────────────────────────── */

.search-links { margin-top: 1rem; border-top: 1px solid var(--border); padding-top: .75rem; }
.search-links .card-head { margin-bottom: 0; }
.search-links ul { list-style: none; padding: 0; margin: .5rem 0 0; display: grid; gap: .25rem; }
.search-links a { word-break: break-all; }

/* ── engines ────────────────────────────────────────────── */

.table-wrap { overflow-x: auto; }
.engines { width: 100%; border-collapse: collapse; font-size: .9rem; }
.engines th {
  text-align: left; font-weight: 600; color: var(--muted); font-size: .8rem;
  padding: .4rem .5rem; border-bottom: 1px solid var(--border); white-space: nowrap;
}
.engines td { padding: .45rem .5rem; border-bottom: 1px solid var(--border); vertical-align: middle; }
.engines tr:last-child td { border-bottom: 0; }
.engines .name { display: flex; align-items: center; gap: .5rem; font-weight: 600; white-space: nowrap; }
.engines .pattern, .engines .code {
  font-family: ui-monospace, "Cascadia Mono", Consolas, monospace; font-size: .82rem;
  word-break: break-all;
}
.engines .pattern { max-width: 360px; }
.engines tr.disabled td { color: var(--muted); }
.engines tr.disabled .name span { text-decoration: line-through; }
.engines .actions { white-space: nowrap; text-align: right; }
.engines .actions button { margin-left: .25rem; }

body:not(.expert) .expert-only { display: none !important; }

@media (max-width: 700px) {
  .engines thead { display: none; }
  .engines, .engines tbody, .engines tr, .engines td { display: block; width: 100%; }
  .engines tr { border-bottom: 1px solid var(--border); padding: .6rem 0; }
  .engines tr:last-child { border-bottom: 0; }
  .engines td { border: 0; padding: .15rem 0; }
  .engines td[data-label]:not(.first)::before {
    content: attr(data-label) ": "; color: var(--muted); font-size: .8rem;
    font-family: system-ui, sans-serif;
  }
  .engines td:empty { display: none; }
  .engines .pattern { max-width: none; }
  .engines .actions { text-align: left; padding-top: .4rem; }
  .engines .actions button { margin: 0 .35rem 0 0; }
  .two { grid-template-columns: 1fr; }
}

/* ── log ────────────────────────────────────────────────── */

.log-controls { display: flex; flex-wrap: wrap; align-items: center; gap: .5rem .75rem; }

.log {
  list-style: none; margin: 0; padding: 0;
  max-height: 60vh; overflow-y: auto;
  font-family: ui-monospace, "Cascadia Mono", Consolas, monospace;
  font-size: .8rem;
  border: 1px solid var(--border); border-radius: 8px;
}
.log:empty { display: none; }
.log li {
  padding: .3rem .55rem; white-space: pre-wrap; overflow-wrap: anywhere;
  color: var(--muted);
}
.log li:nth-child(even) { background: var(--row-alt); }
.log .time { color: var(--debug); margin-right: .5rem; }
.log .debug { color: var(--debug); }
.log .success { color: var(--success); }
.log .change { color: var(--change); font-weight: 600; }
.log .warning { color: var(--warning); font-weight: 600; }
.log .error { color: var(--error); font-weight: 600; }

/* ── dialogs ────────────────────────────────────────────── */

dialog {
  width: min(560px, calc(100vw - 32px));
  max-height: calc(100vh - 32px);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--card);
  color: var(--text);
  padding: 16px;
}
dialog.wide { width: min(820px, calc(100vw - 32px)); }
dialog::backdrop { background: rgba(10, 15, 12, .45); }
dialog h2 { margin-bottom: .25rem; }

fieldset { border: 1px solid var(--border); border-radius: 8px; margin: .75rem 0 0; padding: .4rem .6rem .6rem; }
legend { font-size: .85rem; color: var(--muted); padding: 0 .3rem; }

.candidates { display: grid; gap: .2rem; }
.candidates label.check { padding: .3rem .2rem; font-size: .88rem; align-items: flex-start; }
.candidates label.check input { margin-top: .2rem; }

.details {
  margin: .6rem 0 0; padding: .6rem; max-height: 260px; overflow: auto;
  background: var(--row-alt); border-radius: 8px;
  font-size: .8rem; white-space: pre-wrap; overflow-wrap: anywhere;
}
.details:empty { display: none; }

.crumbs { display: flex; flex-wrap: wrap; gap: .25rem; font-size: .9rem; margin-bottom: .5rem; }
.crumbs button { min-height: 30px; padding: .15rem .5rem; }

.files { list-style: none; margin: 0; padding: 0; border: 1px solid var(--border); border-radius: 8px; max-height: 55vh; overflow-y: auto; }
.files li { display: flex; align-items: center; gap: .5rem; padding: .4rem .6rem; border-bottom: 1px solid var(--border); font-size: .88rem; }
.files li:last-child { border-bottom: 0; }
.files .fname { flex: 1; min-width: 0; overflow-wrap: anywhere; }
.files .fname button { border: 0; background: none; padding: 0; min-height: 0; color: var(--accent); font-weight: 600; text-align: left; }
.files .meta { color: var(--muted); font-size: .8rem; white-space: nowrap; }
.files .empty { color: var(--muted); }
@media (max-width: 520px) { .files .meta.time { display: none; } }