/* Kairos auth surfaces — 2026-10-19 (v3 "Quiet Instrument")
   Shared by /kairos/login, /kairos/account and their /zh mirrors.
   Light paper, ink, one accent for status only. No new fonts or dependencies. */

.kc-auth-page{
  --auth-bg:#ffffff;
  --auth-surface:#ffffff;
  --auth-surface-2:#f7f7f5;
  --auth-ink:#0e0f11;
  --auth-muted:#696969;
  --auth-line:#e5e5e2;
  --auth-line-strong:#cfcfca;
  --auth-signal:#0f766e;
  --auth-danger:#a33a2b;
  min-height:100dvh;
  margin:0;
  background:var(--auth-bg);
  color:var(--auth-ink);
}
.kc-auth-page *{box-sizing:border-box}
.kc-auth-page .ev-page{min-height:100dvh;background:var(--auth-bg)}

/* ── top bar ───────────────────────────────────────────────── */
.kc-auth-top{
  width:100%;
  max-width:1440px;
  height:72px;
  margin:0 auto;
  padding:0 80px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  border-bottom:1px solid var(--auth-line);
}
.kc-auth-brand{
  display:inline-flex;
  align-items:center;
  gap:9px;
  color:var(--auth-ink);
  text-decoration:none;
  font-size:16px;
  font-weight:600;
  letter-spacing:-.02em;
}
.kc-auth-brand svg{display:block;color:var(--auth-ink)}
.kc-auth-top-side{display:flex;align-items:center;gap:22px;min-width:0}
.kc-auth-kicker{
  font-family:var(--font-mono);
  font-size:10.5px;
  letter-spacing:.09em;
  text-transform:uppercase;
  color:var(--auth-muted);
}
.kc-auth-lang{
  font-size:12px;
  color:var(--auth-ink);
  text-decoration:none;
  padding:4px 9px;
  border:1px solid var(--auth-line);
  border-radius:999px;
}
.kc-auth-lang:hover{border-color:var(--auth-line-strong)}
.kc-auth-back{
  font-size:13px;
  color:var(--auth-muted);
  text-decoration:none;
  white-space:nowrap;
}
.kc-auth-back:hover{color:var(--auth-ink)}
.kc-auth-back::after{content:" →"}

/* ── login card ────────────────────────────────────────────── */
.kc-auth-page .kc-gate{
  min-height:calc(100dvh - 72px);
  display:flex;
  align-items:center;
  justify-content:center;
  padding:48px 24px 64px;
  background:transparent;
}
.kc-auth-page .kc-gate-card{
  width:100%;
  max-width:420px;
  padding:38px 36px 30px;
  text-align:left;
  background:var(--auth-surface);
  border:1px solid var(--auth-line);
  border-radius:10px;
  box-shadow:0 1px 2px rgba(14,15,17,.03),0 20px 48px -36px rgba(14,15,17,.18);
}
.kc-auth-page .kc-gate-card h1{
  margin:0 0 7px;
  color:var(--auth-ink);
  font-size:30px;
  line-height:1.15;
  font-weight:500;
  letter-spacing:-.035em;
  text-align:left;
}
.kc-auth-page .kc-gate-card p{
  margin:0 0 22px;
  color:var(--auth-muted);
  font-size:14px;
  line-height:1.55;
  text-align:left;
}
.kc-auth-page .kc-login-sub{
  margin:-2px 0 22px;
  color:var(--auth-muted);
  font-size:14px;
  line-height:1.55;
}
.kc-login-sub .kc-mono{
  font-family:var(--font-mono);
  font-size:12px;
  color:var(--auth-ink);
}
.kc-auth-page .kc-gate .kc-input{
  height:44px;
  margin:0 0 13px;
  padding:11px 13px;
  color:var(--auth-ink);
  background:var(--auth-surface-2);
  border:1px solid var(--auth-line-strong);
  border-radius:8px;
  font-family:var(--font-sans);
  font-size:14px;
  line-height:20px;
}
.kc-auth-page .kc-gate .kc-input:focus{
  border-color:var(--auth-ink);
  box-shadow:0 0 0 3px rgba(19,21,17,.08);
  outline:none;
}
.kc-auth-page .kc-gate .kc-input::placeholder{color:#9a9d94}
.kc-auth-page .kc-gate .kc-btn{
  width:100%;
  height:44px;
  padding:0 16px;
  color:#fff;
  background:var(--auth-ink);
  border:1px solid var(--auth-ink);
  border-radius:8px;
  font-family:var(--font-sans);
  font-size:14px;
  font-weight:600;
  letter-spacing:.01em;
}
.kc-auth-page .kc-gate .kc-btn:hover{opacity:.88}
.kc-auth-page .kc-gate .kc-btn:disabled{
  color:#8b8e85;
  background:#e9e6dc;
  border-color:#e9e6dc;
  opacity:1;
  cursor:not-allowed;
}
.kc-auth-page .kc-gate .kc-err{
  margin:0 0 14px;
  padding:8px 10px;
  color:var(--auth-danger);
  background:rgba(163,58,43,.06);
  border-left:2px solid var(--auth-danger);
  border-radius:3px;
  font-size:12.5px;
  line-height:1.45;
}
.kc-login-row{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  margin:0 0 16px;
  color:var(--auth-muted);
  font-size:12.5px;
}
.kc-login-remember{
  display:inline-flex;
  align-items:center;
  gap:8px;
  color:var(--auth-muted);
  font-size:12.5px;
  cursor:pointer;
  user-select:none;
}
.kc-login-remember input{
  appearance:none;
  width:15px;
  height:15px;
  margin:0;
  flex:none;
  border:1px solid var(--auth-line-strong);
  border-radius:3px;
  background:var(--auth-surface-2);
  display:grid;
  place-content:center;
  cursor:pointer;
}
.kc-login-remember input:checked{background:var(--auth-ink);border-color:var(--auth-ink)}
.kc-login-remember input:checked::after{
  content:"";
  width:7px;
  height:4px;
  border-left:1.5px solid #fff;
  border-bottom:1.5px solid #fff;
  transform:rotate(-45deg) translateY(-1px);
}
.kc-login-remember input:focus-visible{outline:2px solid var(--auth-ink);outline-offset:2px}
.kc-login-link{
  padding:0;
  border:0;
  background:none;
  color:var(--auth-ink);
  font:inherit;
  font-size:12.5px;
  text-decoration:none;
  border-bottom:1px solid var(--auth-line-strong);
  cursor:pointer;
}
.kc-login-link:hover{border-bottom-color:var(--auth-ink)}
.kc-login-link:disabled{color:var(--auth-muted);border-bottom-color:transparent;cursor:default}
.kc-login-back{
  display:inline-flex;
  align-items:center;
  gap:5px;
  margin-top:15px;
  padding:0;
  border:0;
  background:none;
  color:var(--auth-muted);
  font:inherit;
  font-size:12.5px;
  text-decoration:none;
  cursor:pointer;
}
.kc-login-back:hover{color:var(--auth-ink)}
.kc-login-guest::after{content:"→";font-size:13px}
.kc-login-ok{
  display:none;
  margin:8px 0 14px;
  color:var(--auth-signal);
  font-size:13px;
}
.kc-login-ok.show{display:block}
.kc-login-invite{
  margin:18px 0 0;
  padding:14px 0 0;
  border-top:1px solid var(--auth-line);
  color:var(--auth-muted);
  font-size:12.5px;
}
.kc-login-invite summary{
  color:var(--auth-muted);
  font-size:12.5px;
  cursor:pointer;
  user-select:none;
}
.kc-login-invite summary:hover{color:var(--auth-ink)}
.kc-login-invite[open] summary{margin-bottom:10px}
.kc-login-invite .kc-input{margin-top:4px}
.kc-google-sep{
  display:flex;
  align-items:center;
  gap:10px;
  margin:18px 0 12px;
  color:#9a9d94;
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.08em;
  text-transform:uppercase;
}
.kc-google-sep::before,.kc-google-sep::after{content:"";height:1px;flex:1;background:var(--auth-line)}
.kc-login-foot{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  margin:24px 0 0;
  padding:16px 0 0;
  border-top:1px solid var(--auth-line);
  color:#8b8e85;
  font-family:var(--font-mono);
  font-size:10.5px;
  line-height:1.6;
  letter-spacing:.01em;
  text-align:left;
}
.kc-login-foot a{color:var(--auth-muted);text-decoration:none;border-bottom:1px solid transparent}
.kc-login-foot a:hover{color:var(--auth-ink);border-bottom-color:var(--auth-ink)}
.kc-login-foot .kc-foot-links{white-space:nowrap}
.kc-hp{position:absolute;left:-9999px;width:1px;height:1px;opacity:0}

/* ── account ───────────────────────────────────────────────── */
.kc-auth-page-account .kc-gate{
  align-items:flex-start;
  padding:40px 24px 64px;
}
.kc-auth-page-account .kc-gate-card{
  max-width:980px;
  padding:34px 40px 30px;
  border-radius:10px;
}
.kc-auth-page-account .kc-gate-card h1{font-size:32px;margin-bottom:20px !important}
.kc-auth-page-account .kc-gate-card > p#sub{
  margin:0 0 26px;
  color:var(--auth-muted);
  font-size:13.5px;
}
.kc-acct-hero{
  display:flex;
  align-items:flex-end;
  justify-content:space-between;
  gap:24px;
  padding:0 0 24px;
  margin:0 0 30px;
  border-bottom:1px solid var(--auth-line);
}
.kc-acct-balance{display:flex;align-items:baseline;gap:9px;line-height:1}
.kc-acct-bal{
  color:var(--auth-ink);
  font-family:var(--font-head);
  font-size:52px;
  font-weight:500;
  letter-spacing:-.04em;
  line-height:.9;
}
.kc-acct-unit{
  color:var(--auth-muted);
  font-family:var(--font-mono);
  font-size:11px;
  letter-spacing:.08em;
  text-transform:uppercase;
}
.kc-acct-hero-actions{display:flex;align-items:center;gap:14px;flex-wrap:wrap;justify-content:flex-end}
.kc-acct-plan{
  display:inline-flex;
  align-items:center;
  height:24px;
  padding:0 8px;
  border:1px solid var(--auth-line-strong);
  border-radius:999px;
  color:var(--auth-muted);
  font-family:var(--font-mono);
  font-size:10px;
  letter-spacing:.08em;
  text-transform:uppercase;
}
.kc-acct-hero .kc-acct-cta{width:auto;height:36px;padding:0 14px;font-size:12.5px;border-radius:8px}
.kc-acct-layout{
  display:grid;
  grid-template-columns:minmax(0,1.45fr) minmax(260px,.85fr);
  gap:38px;
  align-items:start;
}
.kc-acct-main,.kc-acct-side{min-width:0}
.kc-acct-section{margin:0 0 30px}
.kc-acct-section:last-child{margin-bottom:0}
.kc-acct-h2{
  display:flex;
  align-items:center;
  gap:10px;
  margin:0 0 12px;
  color:var(--auth-muted);
  font-family:var(--font-mono);
  font-size:10.5px;
  font-weight:500;
  letter-spacing:.09em;
  text-transform:uppercase;
}
.kc-acct-h2::after{content:"";height:1px;flex:1;background:var(--auth-line)}
.kc-acct-profile{
  margin:0;
  padding:0;
  border:0;
  color:var(--auth-ink);
  font-size:13.5px;
  line-height:2.05;
  text-align:left;
}
.kc-acct-profile b{
  display:inline-block;
  min-width:72px;
  color:var(--auth-muted);
  font-family:var(--font-mono);
  font-size:10.5px;
  font-weight:400;
  letter-spacing:.06em;
  text-transform:uppercase;
}
.kc-acct-profile span{color:var(--auth-ink)}
.kc-acct-grid{
  display:grid;
  grid-template-columns:repeat(4,minmax(0,1fr));
  gap:1px;
  padding:1px;
  background:var(--auth-line);
  border:1px solid var(--auth-line);
  border-radius:10px;
  overflow:hidden;
}
.kc-acct-stat{
  min-width:0;
  padding:12px 12px 11px;
  background:var(--auth-surface);
}
.kc-acct-stat b{
  display:block;
  margin:0 0 5px;
  color:var(--auth-muted);
  font-family:var(--font-mono);
  font-size:9.5px;
  font-weight:400;
  letter-spacing:.06em;
  line-height:1.35;
  text-transform:uppercase;
}
.kc-acct-stat span{color:var(--auth-ink);font-size:12.5px;white-space:nowrap}
.kc-sess-row{
  display:flex;
  align-items:center;
  gap:12px;
  margin:0;
  padding:12px 0;
  border:0;
  border-bottom:1px solid var(--auth-line);
  border-radius:0;
  font-size:12.5px;
  text-align:left;
}
.kc-sess-row:first-child{padding-top:0}
.kc-sess-main{flex:1;min-width:0}
.kc-sess-line1{color:var(--auth-ink);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.kc-sess-line2{margin-top:3px;color:var(--auth-muted);font-family:var(--font-mono);font-size:10px;line-height:1.5}
.kc-sess-badge{
  flex:none;
  padding:3px 7px;
  border:1px solid rgba(15,118,110,.2);
  border-radius:999px;
  color:var(--auth-signal);
  background:rgba(15,118,110,.06);
  font-family:var(--font-mono);
  font-size:9px;
  font-weight:500;
  letter-spacing:.04em;
  text-transform:uppercase;
}
.kc-sess-revoke{
  flex:none;
  padding:4px 8px;
  border:1px solid var(--auth-line-strong);
  border-radius:6px;
  background:transparent;
  color:var(--auth-muted);
  font:inherit;
  font-size:11px;
  cursor:pointer;
}
.kc-sess-revoke:hover{border-color:var(--auth-danger);color:var(--auth-danger)}
.kc-ledger{width:100%;border-collapse:collapse;font-size:12px}
.kc-ledger th{
  padding:0 0 8px;
  color:var(--auth-muted);
  font-family:var(--font-mono);
  font-size:9.5px;
  font-weight:400;
  letter-spacing:.06em;
  text-align:left;
  text-transform:uppercase;
  border-bottom:1px solid var(--auth-line);
}
.kc-ledger td{padding:8px 0;border-bottom:1px solid var(--auth-line);color:var(--auth-ink);font-variant-numeric:tabular-nums}
.kc-ledger td.num{text-align:right}
.kc-acct-empty,.kc-acct-sub{margin:0;color:var(--auth-muted);font-size:12px;line-height:1.6}
.kc-acct-actions{display:flex;flex-wrap:wrap;gap:8px;margin:16px 0 0}
.kc-acct-danger{
  padding:6px 9px;
  border:1px solid var(--auth-line-strong);
  border-radius:6px;
  background:transparent;
  color:var(--auth-muted);
  font:inherit;
  font-size:11.5px;
  cursor:pointer;
}
.kc-acct-danger:hover{border-color:var(--auth-danger);color:var(--auth-danger)}
.kc-acct-cta{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width:100%;
  height:44px;
  padding:0 16px;
  border:1px solid var(--auth-ink);
  border-radius:10px;
  background:var(--auth-ink);
  color:#fff;
  font-size:13px;
  font-weight:600;
  text-decoration:none;
}
.kc-acct-cta:hover{opacity:.88;color:#fff}
.kc-acct-cta.ghost{
  margin-top:8px;
  border-color:var(--auth-line-strong);
  background:transparent;
  color:var(--auth-ink);
  font-weight:400;
}
.kc-acct-cta.ghost:hover{border-color:var(--auth-ink);color:var(--auth-ink);opacity:1}
.kc-acct-p1{margin:16px 0 0;color:#8b8e85;font-size:10.5px;line-height:1.6}
.kc-acct-p1 a{color:var(--auth-muted)}
#body-loading{padding:18px 0 8px}
#body-loading .kc-acct-sub{display:inline-flex;align-items:center;gap:8px}
#body-loading .kc-acct-sub::before{
  content:"";
  width:10px;height:10px;
  border:1.5px solid var(--auth-line-strong);
  border-top-color:var(--auth-ink);
  border-radius:50%;
  animation:kc-auth-spin .8s linear infinite;
}
@keyframes kc-auth-spin{to{transform:rotate(360deg)}}
#body-guest{padding:8px 0 0}
#body-guest .kc-acct-sub{margin-bottom:16px}

/* ── mobile ────────────────────────────────────────────────── */
@media (max-width:720px){
  .kc-auth-top{height:56px;padding:0 18px}
  .kc-auth-kicker{display:none}
  .kc-auth-page .kc-gate{min-height:calc(100dvh - 56px);padding:28px 16px 40px;align-items:flex-start}
  .kc-auth-page .kc-gate-card{padding:30px 22px 24px;border-radius:10px}
  .kc-auth-page .kc-gate-card h1{font-size:27px}
  .kc-auth-page-account .kc-gate{padding-top:24px}
  .kc-auth-page-account .kc-gate-card{padding:26px 20px 24px}
  .kc-auth-page-account .kc-gate-card h1{font-size:28px;margin-bottom:18px !important}
  .kc-acct-hero{align-items:flex-start;flex-direction:column;gap:16px;padding-bottom:20px;margin-bottom:24px}
  .kc-acct-bal{font-size:44px}
  .kc-acct-hero-actions{width:100%;justify-content:space-between}
  .kc-acct-layout{grid-template-columns:1fr;gap:0}
  .kc-acct-main,.kc-acct-side{display:contents}
  .kc-acct-section{margin-bottom:24px}
  .kc-acct-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .kc-ledger{font-size:11px}
  .kc-login-foot{display:block;font-size:10px}
  .kc-login-foot .kc-foot-links{display:block;margin-top:6px}
}
@media (prefers-reduced-motion:reduce){
  #body-loading .kc-acct-sub::before{animation:none}
}

/* Defeat the legacy global landing-page h1/focus rules that load after this
   file in the auth templates. Scoped to auth surfaces only. */
.kc-auth-page .kc-gate-card h1{
  font-size:30px !important;
  line-height:1.15 !important;
  font-weight:500 !important;
  letter-spacing:-.035em !important;
  margin:0 0 7px !important;
  color:var(--auth-ink) !important;
  text-align:left !important;
}
.kc-auth-page-account .kc-gate-card h1{font-size:32px !important;margin-bottom:20px !important}
.kc-auth-page .kc-gate .kc-input:focus,
.kc-auth-page .kc-gate .kc-input:focus-visible{
  outline:none !important;
  border-color:var(--auth-ink) !important;
  box-shadow:0 0 0 3px rgba(19,21,17,.08) !important;
}
.kc-auth-top-side a[href$="/chat/"]::after{content:" →"}
@media (max-width:720px){
  .kc-auth-page .kc-gate-card h1{font-size:27px !important}
  .kc-auth-page-account .kc-gate-card h1{font-size:28px !important;margin-bottom:18px !important}
}

/* Reset the legacy dark stat-card shell from base-*.css */
.kc-auth-page .kc-acct-grid{gap:1px !important;padding:1px !important;background:var(--auth-line) !important;border:1px solid var(--auth-line) !important;border-radius:10px !important;overflow:hidden !important}
.kc-auth-page .kc-acct-stat{background:var(--auth-surface) !important;border:0 !important;border-radius:0 !important;padding:12px 12px 11px !important}

/* Guest account: keep actions readable instead of stretching to 900px */
#body-guest .kc-acct-cta{width:100%;max-width:320px;margin-left:0;margin-right:auto}
#body-guest .kc-acct-cta.ghost{margin-top:8px}
.kc-auth-page .kc-gate .kc-btn:disabled{color:#6f7268}

#body-guest .kc-acct-cta{display:flex;width:100%;max-width:320px;margin:0 0 8px}
.kc-auth-page-account .kc-gate-card.kc-guest-card{max-width:420px}
@media (max-width:720px){.kc-auth-page-account .kc-gate-card.kc-guest-card{max-width:100%}}