:root {
  --bg: #f6f6fb;
  --panel: #ffffff;
  --panel-soft: #fafafe;
  --border: #e5e5ef;
  --text: #1f1f2e;
  --muted: #5b5b72;
  --violet: #4f46c8;
  --violet-soft: #ecebff;
  --violet-border: #cdc8f5;
  --good: #15803d;
  --warn: #92400e;
  --bad: #b91c1c;
  --good-soft: #eafaf0;
  --warn-soft: #fdf6e7;
  --bad-soft: #fdeeee;
  --on-violet: #ffffff;
  --radius: 16px;
  color-scheme: light;
}

/* Night (dark) mode — same tokens, dark values. The page always offers both. */
:root[data-theme="dark"] {
  --bg: #0e0e16;
  --panel: #1a1a28;
  --panel-soft: #21212f;
  --border: #2d2d40;
  --text: #eceaf6;
  --muted: #a9a7c0;
  --violet: #a79cff;
  --violet-soft: #272144;
  --violet-border: #4a4286;
  --good: #4ade80;
  --warn: #fbbf24;
  --bad: #f87171;
  --good-soft: #14291e;
  --warn-soft: #2b2314;
  --bad-soft: #2c1719;
  --on-violet: #14121f;
  color-scheme: dark;
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  line-height: 1.55;
}

/* Header */
.mt-top { background: var(--panel); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 10; }
.mt-top-inner { max-width: 1180px; margin: 0 auto; padding: 14px clamp(20px, 3vw, 32px); display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.mt-brand { display: flex; align-items: center; gap: 10px; }
.mt-logo { font-size: 20px; color: var(--violet); }
.mt-brand-text h1 { margin: 0; font-size: 15px; letter-spacing: -0.01em; }
.mt-brand-text p { margin: 0; font-size: 12px; color: var(--muted); }

.mt-links { display: flex; align-items: center; gap: 6px; flex-wrap: wrap; justify-content: flex-end; }
.mt-home { font-size: 13px; color: var(--muted); text-decoration: none; white-space: nowrap; padding: 6px 4px; }
.mt-home:hover { color: var(--violet); }

/* Day / night toggle */
.theme-toggle {
  display: inline-flex; align-items: center; gap: 6px;
  font: inherit; font-size: 13px; color: var(--text);
  background: var(--panel-soft); border: 1px solid var(--border);
  border-radius: 999px; padding: 6px 12px; cursor: pointer; white-space: nowrap;
}
.theme-toggle:hover { border-color: var(--violet); color: var(--violet); }

.mt-main { max-width: 1180px; margin: 0 auto; padding: 26px clamp(20px, 3vw, 32px) 40px; }
.mt-foot { max-width: 1180px; margin: 0 auto; padding: 10px clamp(20px, 3vw, 32px) 40px; color: var(--muted); font-size: 12.5px; }
.mt-foot p { margin: 2px 0; }
.muted { color: var(--muted); }
.hidden { display: none !important; }

/* About / Readme */
.about-panel { max-width: 1180px; margin: 0 auto; padding: 26px clamp(20px, 3vw, 32px) 60px; }
.about-panel .lede { max-width: none; }
.about-list { margin: 8px 0 4px; padding-left: 20px; }
.about-list li { margin: 4px 0; font-size: 14px; }
.doc-link { color: var(--violet); font-weight: 600; text-decoration: none; }
.doc-link:hover { text-decoration: underline; }

/* Side-by-side source / draft */
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin: 8px 0 4px; }
.two-col .card-block { margin: 0; }
.two-col .quote { min-height: 120px; }
@media (max-width: 700px) { .two-col { grid-template-columns: 1fr; } }

/* Steps dots */
.mt-steps { list-style: none; margin: 0 0 18px; padding: 0; display: flex; gap: 6px; flex-wrap: wrap; }
.mt-steps li {
  display: flex; align-items: center; gap: 7px;
  font-size: 12px; color: var(--muted);
  background: var(--panel); border: 1px solid var(--border); border-radius: 999px;
  padding: 5px 12px; cursor: pointer;
}
.mt-steps li .n {
  width: 18px; height: 18px; border-radius: 50%;
  background: var(--panel-soft); color: var(--muted);
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 11px; font-weight: 700;
}
.mt-steps li.done { border-color: var(--violet-border); color: var(--violet); }
.mt-steps li.done .n { background: var(--violet); color: var(--on-violet); }
.mt-steps li.active { border-color: var(--violet); color: var(--violet); font-weight: 600; }
.mt-steps li.active .n { background: var(--violet); color: var(--on-violet); }

/* Panels & type */
.panel { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 26px; margin-bottom: 20px; animation: fade .18s ease; }
@keyframes fade { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; } }
.kicker {
  display: inline-block; font-size: 11px; letter-spacing: .12em; text-transform: uppercase;
  color: var(--violet); border: 1px solid var(--violet-border); background: var(--violet-soft);
  border-radius: 999px; padding: 4px 11px; margin-bottom: 10px;
}
.panel h2 { margin: 0 0 4px; font-size: 23px; letter-spacing: -0.02em; }
.panel h3 { margin: 0 0 8px; font-size: 15px; }
.lede { margin: 6px 0 16px; color: var(--muted); font-size: 14.5px; max-width: 66ch; }
.card-block { background: var(--panel-soft); border: 1px solid var(--border); border-radius: 14px; padding: 16px 18px; margin: 10px 0 18px; }
.quote {
  background: var(--panel); border: 1px solid var(--border); border-radius: 12px;
  padding: 12px 14px; white-space: pre-wrap; font-size: 15px; line-height: 1.9;
}
.pill { display: inline-block; font-size: 11px; vertical-align: 2px; border: 1px solid var(--violet-border); color: var(--violet); background: var(--violet-soft); border-radius: 999px; padding: 2px 9px; margin-left: 6px; }

/* Mode cards */
.mode-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 14px; margin-top: 16px; }
.mode-card {
  text-align: left; background: var(--panel); border: 1px solid var(--border); border-radius: 14px;
  padding: 18px; cursor: pointer; font: inherit; color: inherit; transition: .15s;
}
.mode-card b { display: block; color: var(--violet); margin-bottom: 6px; font-size: 15px; }
.mode-card span { font-size: 13.5px; color: var(--muted); }
.mode-card:hover, .mode-card:focus { border-color: var(--violet); box-shadow: 0 10px 26px rgba(109,94,252,.18); transform: translateY(-1px); }

/* Engine cards */
.engine-cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 12px; margin: 4px 0 16px; }
.engine {
  border: 1px solid var(--border); border-radius: 14px; padding: 14px 16px; cursor: pointer;
  background: var(--panel); font: inherit; color: inherit; text-align: left; transition: .15s;
}
.engine b { font-size: 14px; }
.engine .preview { display: block; margin-top: 5px; font-size: 13px; color: var(--muted); line-height: 1.7; }
.engine.sel { border-color: var(--violet); background: var(--violet-soft); box-shadow: 0 0 0 1px var(--violet) inset; }
.draftbox {
  background: var(--panel); border: 1px solid var(--violet-border); border-radius: 12px;
  padding: 14px 16px; white-space: pre-wrap; font-size: 15.5px; line-height: 2;
}
.draftbox mark { background: #fde68a; border-radius: 4px; padding: 0 2px; color: #1f1f2e; }
:root[data-theme="dark"] .draftbox mark { background: #7c5a00; color: #fdf6e3; }

/* Controls */
textarea, input[type="text"], input[type="password"], select {
  width: 100%; padding: 9px 11px; border: 1px solid var(--border); border-radius: 10px;
  font-size: 14px; font-family: inherit; color: var(--text); background: var(--panel);
}
textarea { resize: vertical; line-height: 1.6; }
textarea:focus, input:focus, select:focus { outline: none; border-color: var(--violet); }
textarea::placeholder, input::placeholder { color: var(--muted); opacity: .8; }
.mini-label { font-size: 12px; color: var(--muted); }
.profile-row { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; margin: 6px 0 2px; }
@media (max-width: 700px) { .profile-row { grid-template-columns: 1fr; } }

/* Quick feedback checkpoint */
.feedback-row { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin: 6px 0 8px; }
.feedback-row label { display: flex; flex-direction: column; gap: 4px; font-size: 12px; color: var(--muted); }
.feedback-row select { width: 100%; }
@media (max-width: 700px) { .feedback-row { grid-template-columns: 1fr; } }
.row-actions { display: flex; align-items: center; gap: 10px; margin: 16px 0 6px; flex-wrap: wrap; }
.status { font-size: 13px; color: var(--muted); }
.status.err { color: var(--bad); }
.status.ok { color: var(--good); }
.rule { border: none; border-top: 1px solid var(--border); margin: 24px 0 16px; }

.btn {
  border: none; border-radius: 11px; padding: 10px 18px; font-size: 14px; cursor: pointer; font-weight: 600; font-family: inherit;
  transition: .15s; background: var(--violet); color: var(--on-violet);
}
.btn:hover:not(:disabled) { filter: brightness(1.06); }
.btn:disabled { opacity: .45; cursor: default; }
.btn.ghost { background: var(--panel); color: var(--muted); border: 1px solid var(--border); }
.btn.ghost:hover:not(:disabled) { color: var(--violet); border-color: var(--violet-border); }
.btn.secondary { background: var(--panel); color: var(--violet); border: 1px solid var(--violet); }
.btn.linklike { background: none; color: var(--violet); border: none; padding: 8px 10px; font-size: 13px; }
.btn.linklike:hover { text-decoration: underline; }
.end-actions { justify-content: flex-start; }

/* Term base */
.tb-source { display: flex; flex-direction: column; gap: 8px; background: var(--panel-soft); border: 1px solid var(--border); border-radius: 14px; padding: 14px 16px; margin-bottom: 12px; }
.radio { display: flex; align-items: center; gap: 8px; font-size: 14px; cursor: pointer; }
.file-pick {
  display: inline-block; padding: 9px 14px; border: 1px solid var(--border); border-radius: 10px;
  background: var(--panel); font-size: 13px; cursor: pointer;
}
.file-pick:hover { border-color: var(--violet); color: var(--violet); }
.tb-entries { margin: 12px 0 4px; }
.tb-entries ul { margin: 6px 0 0; padding: 0; display: flex; flex-wrap: wrap; gap: 6px; list-style: none; }
.tb-entries li { font-size: 12.5px; background: var(--panel); border: 1px solid var(--border); border-radius: 999px; padding: 4px 10px; color: var(--muted); }
.tb-entries li b { color: var(--text); }

.flag { display: flex; gap: 10px; align-items: flex-start; background: var(--panel); border: 1px solid var(--border); border-left: 4px solid var(--warn); border-radius: 10px; padding: 10px 12px; margin: 8px 0; font-size: 13.5px; }
.flag.ok { border-left-color: var(--good); }
.flag .flag-text { flex: 1; }
.flag .flag-text b { display: block; font-size: 13px; }
.flag .btn { padding: 6px 10px; font-size: 12px; white-space: nowrap; }

/* Annotations */
.rate-row { display: flex; gap: 18px; flex-wrap: wrap; }
.rate-row label { display: flex; align-items: center; gap: 8px; font-size: 14px; }
.rate-row select { width: auto; }
.ann-add { display: grid; grid-template-columns: 150px 1fr 1fr auto; gap: 8px; align-items: center; }
@media (max-width: 700px) { .ann-add { grid-template-columns: 1fr; } }
.ann-list { list-style: none; margin: 12px 0 0; padding: 0; display: flex; flex-direction: column; gap: 6px; }
.ann-item {
  display: flex; gap: 10px; align-items: center; background: var(--panel); border: 1px solid var(--border);
  border-radius: 10px; padding: 8px 12px; font-size: 13.5px;
}
.ann-item .tag { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: .04em; border-radius: 999px; padding: 3px 9px; color: #fff; flex: 0 0 auto; }
.tag.acc { background: var(--bad); }
.tag.fl { background: var(--warn); }
.tag.te { background: var(--violet); }
.tag.st { background: #0e7490; }
.tag.lo { background: var(--good); }
.tag.ot { background: #6b7280; }
.ann-item .txt { flex: 1; }
.ann-item .txt i { color: var(--muted); font-size: 12.5px; }
.ann-item .rm { background: none; border: none; color: var(--muted); cursor: pointer; font-size: 15px; }
.ann-item .rm:hover { color: var(--bad); }

.msg-box {
  background: var(--violet-soft); border: 1px solid var(--violet-border); border-radius: 14px;
  padding: 14px 18px; margin-top: 10px; font-size: 14px; line-height: 1.65;
}
.msg-box .who { display: block; font-weight: 700; color: var(--violet); font-size: 12px; margin-bottom: 6px; }
.msg-box p { margin: 0 0 8px; }
.msg-box p:last-child { margin-bottom: 0; }
.msg-box ul, .msg-box ol { margin: 4px 0 8px; padding-left: 20px; }
.msg-box li { margin: 3px 0; }
.msg-box b { font-weight: 650; }
.msg-box code { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 12.5px; background: rgba(0,0,0,.08); padding: 1px 5px; border-radius: 5px; }
:root[data-theme="dark"] .msg-box code { background: rgba(255,255,255,.1); }

.compare { margin: 6px 0 12px; font-size: 13.5px; }
.compare summary { cursor: pointer; color: var(--muted); }

@media (max-width: 720px) {
  .mt-top-inner { flex-direction: column; align-items: flex-start; gap: 8px; }
  .mt-links { justify-content: flex-start; }
}