/* AP-15 (owner, 28 Oct 2026) — the sign-in flow's frame: the sign-in page, the two-factor challenge and the forced password
   change, all rendered inside components/auth/shell. The tokens are the design system's (assets/css/osm.css — the FRTS blue
   #6571ff of AP-7, the navy-tinted surfaces, the semantic pair for an error) copied here because this page never loads
   osm.css; the faces are the shell's Khmer OS Siemreap (public/css/frts-fonts.css) and Moul for the official lines (the
   letterhead's face, self-hosted from assets/fonts/print like complaint-print.css does). Scoped under .frts-auth; the
   shell's `html *` font rule and its 12-px grey `label` are overridden inside it. */
@font-face { font-family: 'Moul'; font-style: normal; font-weight: 400; font-display: swap; src: url('../fonts/print/Moul-Regular.ttf') format('truetype'); }

.frts-auth {
  --fa-brand: #6571ff; --fa-brand-600: #5761e0; --fa-brand-700: #4852c2; --fa-ink-900: #2a3181; --fa-ink-950: #1b2162;
  --fa-brand-100: #eceefe; --fa-brand-200: #cbcfff;
  --fa-gold: #d4a017;
  --fa-text: #1f2433; --fa-muted: #6b7186; --fa-border: #d9dce4; --fa-border-strong: #c2c7d3; --fa-surface: #f6f7f9; --fa-surface-100: #eceef2;
  --fa-danger: #b91c1c; --fa-danger-bg: #fee2e2; --fa-danger-line: #fecaca; --fa-warn: #a16207;
  --fa-radius: .5rem; --fa-radius-card: 1rem;
  min-height: 100vh; box-sizing: border-box;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 1.1rem;
  padding: 2rem 1rem;
  background: radial-gradient(900px 480px at 12% -8%, var(--fa-brand-100) 0, rgba(236, 238, 254, 0) 62%), var(--fa-surface);
  color: var(--fa-text);
}
.frts-auth *, .frts-auth *::before, .frts-auth *::after { box-sizing: border-box; }

/* the card: brand pane left, form pane right */
.frts-auth .fa-card {
  display: grid; grid-template-columns: minmax(280px, 2fr) 3fr;
  width: 100%; max-width: 940px;
  background: #fff; border: 1px solid var(--fa-border); border-radius: var(--fa-radius-card);
  box-shadow: 0 1px 2px rgba(8, 15, 36, .04), 0 14px 36px rgba(8, 15, 36, .10);
  overflow: hidden;
}
.frts-auth .fa-brand {
  position: relative;
  display: flex; flex-direction: column; gap: 1rem;
  padding: 2.5rem 2rem 2rem;
  background: linear-gradient(165deg, var(--fa-ink-900) 0%, var(--fa-ink-950) 100%);
  color: #fff;
}
.frts-auth .fa-brand::before { content: ''; position: absolute; left: 0; right: 0; top: 0; height: 3px; background: var(--fa-gold); }
.frts-auth .fa-lockup {   /* the letterhead lockup: the emblem over the two official lines, centred as one group, the group anchored left (owner, 28 Oct 2026) */
  display: inline-flex; flex-direction: column; align-items: center; gap: .55rem;
  align-self: flex-start; max-width: 100%; text-align: center;
}
.frts-auth .fa-emblem { width: 96px; height: 96px; display: block; filter: drop-shadow(0 2px 6px rgba(0, 0, 0, .35)); }
.frts-auth .fa-official .fa-line { font-size: .8rem; line-height: 2; opacity: .92; }   /* both lines the same size */
.frts-auth.km .fa-official .fa-line, .frts-auth.km .fa-system-name { font-family: 'Moul', 'Khmer OS Muol Light', 'Khmer OS Siemreap', serif; font-weight: 400; }
.frts-auth.en .fa-official .fa-line, .frts-auth.en .fa-system-name { font-family: Georgia, 'Times New Roman', serif; font-weight: 700; }
.frts-auth.en .fa-official .fa-line { line-height: 1.6; letter-spacing: .01em; }
.frts-auth .fa-rule { width: 44px; height: 2px; border: 0; margin: 0; background: var(--fa-gold); opacity: .95; }
.frts-auth .fa-system-name { font-size: 1.1rem; line-height: 2; text-wrap: balance; }   /* an even two-line split keeps «ជនបរទេស» whole (rc49 look) */
.frts-auth.en .fa-system-name { font-size: 1.3rem; line-height: 1.35; }
.frts-auth .fa-system-other { margin-top: .35rem; font-size: .8rem; line-height: 1.6; opacity: .72; }
.frts-auth .fa-env {
  align-self: flex-start; margin-top: auto;
  padding: .2rem .65rem; border-radius: 999px;
  background: var(--fa-gold); color: #3d2e00;
  font-size: .72rem; font-weight: 700; letter-spacing: .06em; line-height: 1.6;
}

/* the form pane */
.frts-auth .fa-pane { display: flex; flex-direction: column; gap: .6rem; padding: 1.5rem 2.5rem 2.25rem; }
.frts-auth .fa-topbar { display: flex; justify-content: flex-end; margin-bottom: .4rem; }
.frts-auth .fa-lang {
  display: inline-flex; align-items: center; gap: .4rem;
  padding: .3rem .7rem; border: 1px solid var(--fa-border); border-radius: 999px;
  color: var(--fa-brand-700); font-size: .85rem; line-height: 1.6; text-decoration: none;
}
.frts-auth .fa-lang:hover { background: var(--fa-brand-100); border-color: var(--fa-brand-200); color: var(--fa-brand-700); text-decoration: none; }
.frts-auth .fa-lang svg { width: 15px; height: 15px; }
.frts-auth.en .fa-lang span { font-size: .95rem; }   /* the Khmer label sits small beside Latin at the same size */
.frts-auth .fa-heading { margin: 0; font-size: 1.45rem; font-weight: 700; line-height: 1.6; color: var(--fa-text); }
.frts-auth .fa-lead { margin: 0 0 .3rem; font-size: .9rem; line-height: 1.75; color: var(--fa-muted); }
.frts-auth .fa-account { display: inline-flex; align-items: center; gap: .4rem; font-size: .88rem; color: var(--fa-muted); }
.frts-auth .fa-account svg { width: 15px; height: 15px; }
.frts-auth .fa-account b { color: var(--fa-text); font-weight: 700; }

/* notices: an error above the fields, an information line for a guest sent here */
.frts-auth .fa-alert {
  display: flex; align-items: flex-start; gap: .6rem;
  margin: .2rem 0 .3rem; padding: .7rem .9rem;
  border: 1px solid transparent; border-radius: var(--fa-radius);
  font-size: .88rem; line-height: 1.65;
}
.frts-auth .fa-alert svg { flex: none; width: 18px; height: 18px; margin-top: .2rem; }
.frts-auth .fa-alert.is-error { background: var(--fa-danger-bg); border-color: var(--fa-danger-line); color: #7f1d1d; }
.frts-auth .fa-alert.is-info { background: var(--fa-brand-100); border-color: var(--fa-brand-200); color: var(--fa-ink-900); }

/* fields */
.frts-auth .fa-form { display: flex; flex-direction: column; gap: .9rem; margin-top: .2rem; }
.frts-auth .fa-field { display: flex; flex-direction: column; gap: .35rem; }
.frts-auth .fa-field label { margin: 0; font-size: .86rem; font-weight: 700; line-height: 1.6; color: var(--fa-text); }
.frts-auth .fa-input {
  width: 100%; height: 46px; padding: 0 .9rem;
  font-size: 1rem; line-height: 1.5; color: var(--fa-text);
  background: #fff; border: 1px solid var(--fa-border-strong); border-radius: var(--fa-radius);
  outline: 0; transition: border-color .12s ease, box-shadow .12s ease;
  -webkit-appearance: none; appearance: none;
}
.frts-auth .fa-input::placeholder { color: var(--fa-border-strong); }
.frts-auth .fa-input:focus { border-color: var(--fa-brand); box-shadow: 0 0 0 3px rgba(101, 113, 255, .22); }
.frts-auth .fa-field.is-invalid .fa-input { border-color: var(--fa-danger); }
.frts-auth .fa-field.is-invalid .fa-input:focus { box-shadow: 0 0 0 3px rgba(185, 28, 28, .16); }
.frts-auth .fa-err { display: none; font-size: .82rem; line-height: 1.6; color: var(--fa-danger); }
.frts-auth .fa-field.is-invalid .fa-err:not(:empty) { display: block; }
.frts-auth .fa-hint { font-size: .8rem; line-height: 1.6; color: var(--fa-muted); }
.frts-auth .fa-hint[hidden] { display: none; }
.frts-auth .fa-caps { color: var(--fa-warn); font-weight: 700; }

/* the password eye */
.frts-auth .fa-pass { position: relative; }
.frts-auth .fa-pass .fa-input { padding-right: 3rem; }
.frts-auth .fa-eye {
  position: absolute; right: .3rem; top: 50%; transform: translateY(-50%);
  width: 36px; height: 36px; display: grid; place-items: center;
  border: 0; border-radius: .4rem; background: transparent; color: var(--fa-muted); cursor: pointer;
}
.frts-auth .fa-eye:hover { background: var(--fa-surface-100); color: var(--fa-text); }
.frts-auth .fa-eye svg { width: 18px; height: 18px; }
.frts-auth .fa-eye .ico-off { display: none; }
.frts-auth .fa-eye.is-shown .ico-on { display: none; }
.frts-auth .fa-eye.is-shown .ico-off { display: block; }

/* the challenge's code fields — tabular digits in the Latin face the shell already loads */
.frts-auth .fa-code { height: 56px; text-align: center; font-family: Roboto, 'Khmer OS Siemreap', system-ui, sans-serif; font-size: 1.6rem; letter-spacing: .4em; font-variant-numeric: tabular-nums; padding-left: 1.2rem; }
.frts-auth .fa-code::placeholder { letter-spacing: .25em; }
.frts-auth .fa-recovery { font-size: 1.25rem; letter-spacing: .18em; text-transform: uppercase; }

/* the one action */
.frts-auth .fa-submit {
  width: 100%; height: 48px; margin-top: .35rem;
  border: 0; border-radius: var(--fa-radius);
  background: var(--fa-brand); color: #fff;
  font-size: 1rem; font-weight: 700; line-height: 1.5; cursor: pointer;
  transition: background-color .12s ease;
}
.frts-auth .fa-submit:hover { background: var(--fa-brand-600); }
.frts-auth .fa-submit[disabled] { opacity: .6; cursor: default; }
.frts-auth .fa-links { display: flex; flex-wrap: wrap; justify-content: center; gap: .5rem 1.25rem; margin-top: .9rem; font-size: .86rem; }
.frts-auth .fa-link { color: var(--fa-brand-700); text-decoration: none; }
.frts-auth .fa-link:hover { color: var(--fa-brand-700); text-decoration: underline; }
.frts-auth [data-fa-panel][hidden] { display: none; }

/* keyboard focus, always visible */
.frts-auth .fa-submit:focus-visible, .frts-auth .fa-eye:focus-visible, .frts-auth .fa-lang:focus-visible, .frts-auth .fa-link:focus-visible, .frts-auth .fa-foot a:focus-visible {
  outline: 2px solid var(--fa-brand); outline-offset: 2px;
}

/* the footer under the card */
.frts-auth .fa-foot { max-width: 940px; text-align: center; font-size: .78rem; line-height: 1.8; color: var(--fa-muted); }
.frts-auth .fa-foot a { color: var(--fa-brand-700); text-decoration: none; white-space: nowrap; }
.frts-auth .fa-foot a:hover { text-decoration: underline; }

/* one column on a phone: the brand pane becomes a band */
@media (max-width: 760px) {
  .frts-auth { padding: 1rem; justify-content: flex-start; }
  .frts-auth .fa-card { grid-template-columns: 1fr; }
  .frts-auth .fa-brand { display: grid; grid-template-columns: auto 1fr; align-items: center; column-gap: 1rem; row-gap: .6rem; padding: 1.1rem 1.25rem; }
  .frts-auth .fa-lockup { display: block; }
  .frts-auth .fa-emblem { width: 52px; height: 52px; }
  .frts-auth .fa-official, .frts-auth .fa-rule, .frts-auth .fa-system-other { display: none; }
  .frts-auth .fa-system { min-width: 0; }
  .frts-auth .fa-system-name { font-size: .95rem; line-height: 1.9; }
  .frts-auth.en .fa-system-name { font-size: 1.05rem; line-height: 1.3; }
  .frts-auth .fa-env { grid-column: 2; justify-self: start; margin: 0; }   /* its own row under the name, a pill still */
  .frts-auth .fa-pane { padding: 1.1rem 1.25rem 1.5rem; }
}
@media (prefers-reduced-motion: reduce) {
  .frts-auth .fa-input, .frts-auth .fa-submit { transition: none; }
}