/* ──────────────────────────────────────────────────────────────
   checker.css — /checker, homepage checker slot, /members/monitor,
   pricing monitoring tiers. Loaded after labs.css and findings.css;
   uses labs.css tokens (incl. --tint-*) and the --l451-* colours.
   ────────────────────────────────────────────────────────────── */

:root {
  --ck-present: var(--l451-clean, #16a34a);
  --ck-warn:    var(--l451-medium, #b45309);
  --ck-bad:     var(--l451-critical, #dc2626);
  --ck-idle:    var(--text-3);
  --ck-ease:    cubic-bezier(0.22, 1, 0.36, 1);
}

@keyframes ck-rise {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: none; }
}
@keyframes ck-fade { from { opacity: 0; } to { opacity: 1; } }

/* ── Homepage slot ─────────────────────────────────────────── */
.ck-home {
  padding-top: 6px;
  padding-bottom: 6px;
}
.ck-home__link {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 12px 24px;
  padding: 18px 20px 18px 22px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: linear-gradient(to bottom, var(--bg-2), var(--surface));
  /* accent edge as an inset shadow so hover can't erase it */
  box-shadow: inset 3px 0 0 var(--accent);
  color: var(--text);
  text-decoration: none;
  margin-bottom: 14px;
  transition: border-color .2s, box-shadow .2s;
}
.ck-home__link:hover { border-color: var(--border-strong); box-shadow: inset 3px 0 0 var(--accent), var(--shadow); color: var(--text); }
.ck-home__link:focus-visible { outline: 2px solid var(--focus); outline-offset: 3px; }
.ck-home__title {
  font-family: var(--font-display);
  font-size: clamp(1.1rem, 2vw, 1.3rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.25;
  margin: 0 0 4px;
}
.ck-home__sub { margin: 0; color: var(--text-2); max-width: 62ch; line-height: 1.55; font-size: .95rem; }
/* File names render as small colour-cycled pills (cycle lives in labs.css) */
.ck-home__files {
  margin-top: 10px;
  display: flex; flex-wrap: wrap; gap: 5px;
  font-family: var(--font-mono);
  font-size: .74rem;
  color: var(--text-3);
}
.ck-home__files > * {
  display: inline-flex;
  align-items: center;
  padding: 0 8px;
  line-height: 1.6;
  border-radius: 999px;
  border: 1px solid var(--tone-bd, var(--border));
  background: var(--tone-bg, var(--surface));
  color: var(--tone-fg, var(--text-2));
}
.ck-home__cta { white-space: nowrap; }
.ck-home__then {
  margin: 0 0 10px;
  text-align: center;
  color: var(--text-3);
  font-size: .88rem;
}
@media (max-width: 640px) {
  .ck-home__link { grid-template-columns: 1fr; padding: 16px 16px 16px 18px; }
  .ck-home__cta { justify-self: start; }
}

/* ── Checker form ──────────────────────────────────────────── */
.ck-form { display: flex; gap: 8px; align-items: stretch; flex-wrap: wrap; }
.ck-form .generate__input-wrap { flex: 1 1 320px; }
.ck-form__btn { min-width: 140px; }
.ck-form__btn[disabled] { opacity: .6; cursor: progress; }
.ck-hint { margin: 8px 0 0; font-size: .8rem; color: var(--text-3); }
.ck-hint a { color: inherit; text-decoration: underline; text-decoration-color: var(--border-strong); text-underline-offset: 2px; }

.ck-msg {
  display: none;
  margin-top: 10px;
  padding: 8px 12px;
  border-radius: var(--radius);
  font-size: .88rem;
  border: 1px solid var(--tone-bd, var(--border));
  background: var(--tone-bg, var(--bg-2));
  color: var(--tone-fg, var(--text-2));
}
.ck-msg.is-on { display: block; animation: ck-rise .25s var(--ck-ease); }
.ck-msg--error { --tone-bg: var(--tint-red-bg);   --tone-bd: var(--tint-red-bd);   --tone-fg: var(--tint-red-fg); }
.ck-msg--warn  { --tone-bg: var(--tint-amber-bg); --tone-bd: var(--tint-amber-bd); --tone-fg: var(--tint-amber-fg); }
.ck-msg--info  { --tone-bg: var(--tint-blue-bg);  --tone-bd: var(--tint-blue-bd);  --tone-fg: var(--tint-blue-fg); }

/* Progress: a row per file that settles as the check completes */
.ck-pending { margin-top: 14px; display: none; }
.ck-pending.is-on { display: block; animation: ck-fade .2s ease-out; }
.ck-pending__line {
  font-family: var(--font-mono);
  font-size: .8rem;
  color: var(--text-3);
  padding: 2px 0;
}
.ck-pending__line::before { content: ''; display: inline-block; width: 8px; height: 8px; margin-right: 10px;
  border-radius: 50%; background: var(--ck-idle); animation: ck-pulse 1.2s infinite; vertical-align: middle; }
.ck-pending__line:nth-child(2)::before { animation-delay: .15s; }
.ck-pending__line:nth-child(3)::before { animation-delay: .3s; }
.ck-pending__line:nth-child(4)::before { animation-delay: .45s; }
.ck-pending__line:nth-child(5)::before { animation-delay: .6s; }
@keyframes ck-pulse { 0%,100% { opacity: .25 } 50% { opacity: 1 } }
@media (prefers-reduced-motion: reduce) { .ck-pending__line::before { animation: none; opacity: .6; } }

/* ── Result ────────────────────────────────────────────────── */
.ck-result { margin-top: 18px; animation: ck-rise .35s var(--ck-ease) both; }
.ck-result__head {
  display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px 12px;
  margin-bottom: 10px;
}
.ck-result__domain {
  font-family: var(--font-display);
  font-size: 1.2rem; font-weight: 700; letter-spacing: -0.01em; margin: 0;
  word-break: break-all;
}
.ck-result__meta { font-size: .8rem; color: var(--text-3); }

/* The ledger: the page's one strong element */
.ck-ledger {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--surface);
}
.ck-ledger__row {
  display: grid;
  grid-template-columns: 22px minmax(120px, 170px) minmax(120px, 170px) 1fr;
  gap: 2px 12px;
  align-items: baseline;
  padding: 9px 14px;
  border-top: 1px solid var(--border);
  transition: background-color .15s;
  animation: ck-rise .3s var(--ck-ease) both;
}
.ck-ledger__row:hover { background: var(--bg-2); }
.ck-ledger__row:first-child { border-top: 0; }
.ck-ledger__row:nth-child(1) { animation-delay: .04s; }
.ck-ledger__row:nth-child(2) { animation-delay: .08s; }
.ck-ledger__row:nth-child(3) { animation-delay: .12s; }
.ck-ledger__row:nth-child(4) { animation-delay: .16s; }
.ck-ledger__row:nth-child(5) { animation-delay: .20s; }
.ck-ledger__row:nth-child(n+6) { animation-delay: .24s; }

/* State → tone (drives the mark and the state pill) */
.ck-ledger__row[data-state="present"] { --tone-bg: var(--tint-green-bg); --tone-bd: var(--tint-green-bd); --tone-fg: var(--tint-green-fg); }
.ck-ledger__row[data-state="missing"] { --tone-bg: var(--tint-gray-bg);  --tone-bd: var(--tint-gray-bd);  --tone-fg: var(--text-3); }
.ck-ledger__row[data-state="soft404"],
.ck-ledger__row[data-state="blocked"] { --tone-bg: var(--tint-amber-bg); --tone-bd: var(--tint-amber-bd); --tone-fg: var(--tint-amber-fg); }
.ck-ledger__row[data-state="error"],
.ck-ledger__row[data-issue="critical"] { --tone-bg: var(--tint-red-bg);  --tone-bd: var(--tint-red-bd);   --tone-fg: var(--tint-red-fg); }

.ck-ledger__mark {
  align-self: center;
  width: 10px; height: 10px; border-radius: 3px;
  background: var(--ck-idle);
}
.ck-ledger__row[data-state="present"] .ck-ledger__mark { background: var(--ck-present); }
.ck-ledger__row[data-state="missing"] .ck-ledger__mark { background: transparent; border: 2px solid var(--ck-idle); }
.ck-ledger__row[data-state="soft404"] .ck-ledger__mark,
.ck-ledger__row[data-state="blocked"] .ck-ledger__mark { background: var(--ck-warn); }
.ck-ledger__row[data-state="error"]   .ck-ledger__mark { background: var(--ck-bad); }
.ck-ledger__row[data-issue="critical"] .ck-ledger__mark { background: var(--ck-bad); box-shadow: 0 0 0 3px var(--tint-red-bd); }

.ck-ledger__name { font-family: var(--font-mono); font-size: .86rem; font-weight: 600; }
.ck-ledger__name a { color: inherit; text-decoration: none; border-bottom: 1px dotted var(--border-strong); }
.ck-ledger__name a:hover { border-bottom-color: currentColor; }
.ck-ledger__state {
  justify-self: start;
  display: inline-flex;
  align-items: center;
  padding: 0 8px;
  border-radius: 999px;
  font-size: .75rem;
  font-weight: 600;
  line-height: 1.6;
  border: 1px solid var(--tone-bd, var(--border));
  background: var(--tone-bg, var(--bg-2));
  color: var(--tone-fg, var(--text-2));
}
.ck-ledger__facts { font-size: .84rem; color: var(--text-2); line-height: 1.5; }
.ck-ledger__facts .ck-gen { color: var(--text); font-weight: 600; }

@media (max-width: 640px) {
  .ck-ledger__row { grid-template-columns: 22px 1fr; padding: 9px 12px; }
  .ck-ledger__state, .ck-ledger__facts { grid-column: 2; }
}

/* Diff since last check */
.ck-diff {
  margin-top: 12px;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-2);
  font-size: .86rem;
  animation: ck-rise .3s var(--ck-ease) .2s both;
}
.ck-diff__title { font-weight: 700; margin: 0 0 4px; }
.ck-diff__none { margin: 0; color: var(--text-2); }
.ck-diff__item { margin: 6px 0 0; }
.ck-diff__item summary { cursor: pointer; }
.ck-diff__item summary:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }
.ck-diff__item[open] .ck-diff__lines { animation: ck-rise .22s var(--ck-ease); }
.ck-diff__lines {
  margin: 6px 0 0; padding: 6px 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono); font-size: .76rem;
  overflow-x: auto; white-space: pre;
  list-style: none;
}
.ck-diff__lines li { line-height: 1.55; padding: 0 10px; }
.ck-diff__add { color: var(--tint-green-fg); background: var(--tint-green-bg); }
.ck-diff__del { color: var(--tint-red-fg);   background: var(--tint-red-bg); }
.ck-diff__agent { color: var(--text); font-weight: 600; }

/* Next steps */
.ck-next {
  margin-top: 14px;
  display: flex; flex-wrap: wrap; gap: 8px; align-items: center;
  animation: ck-fade .3s ease-out .3s both;
}
.ck-next__note { font-size: .82rem; color: var(--text-3); margin: 0; flex-basis: 100%; }

/* ── Checker page explainer ────────────────────────────────── */
.ck-about { max-width: 900px; margin: 0 auto; }
.ck-about__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 18px 28px;
}
.ck-about__item h3 { font-family: var(--font-mono); font-size: .9rem; font-weight: 600; margin: 0 0 4px; }
.ck-about__item p  { margin: 0; color: var(--text-2); line-height: 1.6; font-size: .9rem; }

/* ── Members: monitor ──────────────────────────────────────── */
.mon-plan {
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px 18px;
  align-items: center;
  padding: 12px 14px;
  border: 1px solid var(--tint-indigo-bd);
  border-radius: var(--radius-lg);
  background: var(--tint-indigo-bg);
  margin-bottom: 14px;
}
.mon-plan__name { font-family: var(--font-display); font-weight: 700; font-size: 1rem; margin: 0; }
.mon-plan__use  { margin: 1px 0 0; font-size: .84rem; color: var(--text-2); }
.mon-meter { height: 6px; width: 160px; background: var(--surface); border: 1px solid var(--tint-indigo-bd); border-radius: 99px; overflow: hidden; margin-top: 6px; }
.mon-meter span { display: block; height: 100%; background: var(--tint-indigo-fg); transition: width .6s var(--ck-ease); }

.mon-add { margin-bottom: 14px; }
.mon-list { display: flex; flex-direction: column; gap: 6px; }
.mon-empty {
  padding: 22px 16px; text-align: center;
  border: 1px dashed var(--border-strong); border-radius: var(--radius-lg);
  background: var(--bg-2);
  color: var(--text-2);
}

.mon-row {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface);
  overflow: hidden;
  transition: border-color .15s, box-shadow .15s;
  animation: ck-rise .3s var(--ck-ease) both;
}
.mon-row:hover { border-color: var(--border-strong); }
.mon-row:has(> .mon-row__detail:not([hidden])) { border-color: var(--border-strong); box-shadow: var(--shadow-sm); }
.mon-row[data-over="1"] { opacity: .6; }
.mon-row__main {
  display: grid;
  grid-template-columns: 12px minmax(0, 1.6fr) minmax(0, 1.2fr) minmax(0, 1fr) auto;
  gap: 4px 14px;
  align-items: center;
  padding: 10px 14px;
}
.mon-row__dot { width: 10px; height: 10px; border-radius: 50%; background: var(--ck-present); }
.mon-row__dot[data-sev="critical"] { background: var(--l451-critical); box-shadow: 0 0 0 3px var(--tint-red-bd); }
.mon-row__dot[data-sev="high"]     { background: var(--l451-high); }
.mon-row__dot[data-sev="medium"]   { background: var(--l451-medium); }
.mon-row__dot[data-sev="low"]      { background: var(--l451-low); }
.mon-row__dot[data-sev="none"]     { background: transparent; border: 2px solid var(--ck-idle); }
.mon-row__dot[data-paused="1"]     { background: var(--ck-idle); box-shadow: none; }
.mon-row__domain { font-family: var(--font-mono); font-weight: 600; font-size: .9rem; word-break: break-all; }
.mon-row__domain small { display: block; font-family: var(--font-body); font-weight: 400; color: var(--text-3); font-size: .76rem; }
.mon-row__state  { font-size: .84rem; }
.mon-row__when   { font-size: .78rem; color: var(--text-3); line-height: 1.45; }
.mon-row__actions { display: flex; gap: 6px; flex-wrap: wrap; justify-content: flex-end; }
.mon-row__actions .btn { padding: 4px 10px; font-size: .78rem; }
.mon-row__detail {
  border-top: 1px solid var(--border);
  padding: 12px 14px 14px;
  background: var(--bg-2);
  transition: opacity .22s var(--ck-ease), transform .22s var(--ck-ease);
  transition: opacity .22s var(--ck-ease), transform .22s var(--ck-ease), display .22s allow-discrete;
}
.mon-row__detail[hidden] { display: none; opacity: 0; transform: translateY(-3px); }
@starting-style {
  .mon-row__detail { opacity: 0; transform: translateY(-3px); }
}
.mon-row__detail .l451-panel { margin-top: 0; }

@media (max-width: 860px) {
  .mon-row__main { grid-template-columns: 12px 1fr; }
  .mon-row__state, .mon-row__when, .mon-row__actions { grid-column: 2; justify-content: flex-start; }
}

.mon-alerts {
  margin-top: 20px;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: linear-gradient(to bottom, var(--bg-2), var(--surface));
}
.mon-alerts h2 { font-family: var(--font-display); font-size: 1rem; font-weight: 700; margin: 0 0 6px; }
.mon-alerts label { display: flex; gap: 8px; align-items: flex-start; margin: 6px 0; font-size: .88rem; cursor: pointer; }
.mon-alerts input { margin-top: 3px; accent-color: var(--text); }
.mon-alerts small { display: block; color: var(--text-3); font-size: .8rem; }

.mon-tiers {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 8px;
  margin: 10px 0 4px;
}
.mon-tier {
  padding: 10px 12px;
  border: 1px solid var(--tone-bd, var(--border));
  border-radius: var(--radius);
  background: var(--tone-bg, var(--surface));
}
.mon-tiers > :nth-child(4n+1) { --tone-bg: var(--tint-gray-bg);   --tone-bd: var(--tint-gray-bd); }
.mon-tiers > :nth-child(4n+2) { --tone-bg: var(--tint-blue-bg);   --tone-bd: var(--tint-blue-bd); }
.mon-tiers > :nth-child(4n+3) { --tone-bg: var(--tint-indigo-bg); --tone-bd: var(--tint-indigo-bd); }
.mon-tiers > :nth-child(4n+4) { --tone-bg: var(--tint-purple-bg); --tone-bd: var(--tint-purple-bd); }
.mon-tier strong { display: block; font-family: var(--font-display); font-size: 1rem; font-weight: 700; }
.mon-tier span { font-size: .82rem; color: var(--text-2); }

/* ── Pricing: monitoring ───────────────────────────────────── */
.pm { padding-top: 0; }
.pm__intro { max-width: 620px; margin: 0 auto 20px; text-align: center; }
.pm__table {
  max-width: 880px; margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--surface);
}
.pm__tier { padding: 18px 18px; border-left: 1px solid var(--border); }
.pm__tier:first-child { border-left: 0; }
/* Optional hook: add .pm__tier--featured to the tier you want to lead with */
.pm__tier--featured { background: linear-gradient(to bottom, var(--tint-indigo-bg), var(--surface) 150px); }
.pm__count { font-family: var(--font-display); font-weight: 700; font-size: 1.9rem; letter-spacing: -0.02em; line-height: 1; }
.pm__count small { font-size: .9rem; font-weight: 600; color: var(--text-2); margin-left: 4px; letter-spacing: 0; }
.pm__price { margin: 8px 0 2px; font-size: 1.05rem; font-weight: 700; }
.pm__price span { font-weight: 400; color: var(--text-2); font-size: .88rem; }
.pm__per { font-size: .8rem; color: var(--text-3); margin: 0 0 12px; }
.pm__foot {
  max-width: 880px; margin: 10px auto 0;
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: 6px 18px;
  font-size: .88rem; color: var(--text-2);
}
.pm__included {
  max-width: 880px; margin: 18px auto 0;
  display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 12px 20px;
}
.pm__included h3 { font-size: .92rem; margin: 0 0 2px; }
.pm__included p  { margin: 0; font-size: .86rem; color: var(--text-2); line-height: 1.55; }
@media (max-width: 760px) {
  .pm__table { grid-template-columns: 1fr; }
  .pm__tier { border-left: 0; border-top: 1px solid var(--border); }
  .pm__tier:first-child { border-top: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .ck-result, .ck-ledger__row, .ck-diff, .ck-next, .mon-row, .ck-msg.is-on { animation: none; }
  .mon-row__detail { transition: none; }
}