/* ============================================================
   mfa.css — 164.0 ยืนยันตัวตน 2 ชั้น · โหลดโดย mfa.js เมื่อใช้
   ใช้ได้ทั้งหน้าที่ใช้ style.css (--card --line-soft --brand-grad …) และหน้าระบบค่าเคมี (chem-2026.css --surface --n4 --accent …)
   ทุกคลาสขึ้นต้น mfa- (ไม่ชนคลาสเดิม) · ไม่มีแถบสี/หัวสีทึบ · คอนทราสต์ตัวอักษร ≥ 4.5:1 ทุกธีม
   ============================================================ */
.mfa, .mfa-dlg, .mfa-veil {
  --m-card: var(--card, var(--surface, #fff));
  --m-soft: var(--card-2, var(--n1, #f5f5f7));
  --m-text: var(--text, #1d1d1f);
  --m-muted: var(--muted, #5f6368);
  --m-line: var(--line-soft, var(--n4, #e3e3e8));
  --m-line2: var(--line, var(--n4, #d2d2d7));
  --m-ok: var(--ok, #1e7e34);
  --m-okbg: var(--ok-bg, #e8f5ec);
  --m-bad: var(--bad, #c4281c);
  --m-focus: var(--focus, var(--accent, #0a84ff));
  --m-pri: var(--brand-grad, var(--accent, #e60013));
  --m-shadow: var(--shadow-lg, var(--sh-pop, 0 16px 40px rgba(0, 0, 0, .18)));
}
.mfa { color: var(--m-text); text-align: left; }
.mfa-h { font-size: 18px; font-weight: 700; line-height: 1.35; margin: 0 0 4px; color: var(--m-text); }
.mfa-sub { color: var(--m-muted); font-size: 14px; margin: 0 0 14px; overflow-wrap: anywhere; }
.mfa-field { margin: 12px 0 6px; }
.mfa-field label { display: block; font-size: 12.5px; font-weight: 600; color: var(--m-muted); margin-bottom: 6px; }
.mfa-code { width: 100%; box-sizing: border-box; height: 56px; padding: 0 12px; border-radius: 14px; border: 1px solid var(--m-line2); background: var(--m-soft); color: var(--m-text);
  font: 600 24px/1 ui-monospace, "SF Mono", Consolas, monospace; letter-spacing: 8px; text-align: center; outline: none; transition: border-color .15s, box-shadow .15s; }
.mfa-code.rc { font-size: 20px; letter-spacing: 4px; text-transform: uppercase; }
.mfa-code::placeholder { color: var(--m-muted); opacity: .45; letter-spacing: 8px; }
.mfa-code:focus { border-color: var(--m-focus); box-shadow: 0 0 0 3.5px color-mix(in srgb, var(--m-focus) 22%, transparent); }
.mfa-code:disabled { opacity: .55; }
.mfa-err { min-height: 0; font-size: 13px; color: var(--m-bad); margin-top: 6px; display: none; }
.mfa-err.on { display: block; }
.mfa-btn { font: inherit; font-size: 15px; font-weight: 600; min-height: 44px; padding: 10px 16px; border-radius: 12px; border: 1px solid transparent; cursor: pointer;
  display: inline-flex; align-items: center; justify-content: center; text-decoration: none; transition: filter .15s, background .15s, transform .1s; }
.mfa-btn:active { transform: scale(.98); }
.mfa-btn:disabled { opacity: .5; cursor: not-allowed; transform: none; }
.mfa-btn:focus-visible, .mfa-check input:focus-visible, .mfa-later:focus-visible { outline: 2px solid var(--m-focus); outline-offset: 2px; }
.mfa-pri { background: var(--m-pri); color: #fff; }
.mfa-pri:hover:not(:disabled) { filter: brightness(1.06); }
.mfa-danger { background: var(--m-bad); color: #fff; }
.mfa-ghost { background: var(--m-soft); color: var(--m-text); border-color: var(--m-line); }
.mfa-ghost:hover:not(:disabled) { filter: brightness(.97); }
.mfa-link { background: none; border: 0; color: var(--m-focus); padding: 6px 2px; min-height: 36px; }
.mfa-block { width: 100%; }
.mfa-big { min-height: 50px; font-size: 16px; }
.mfa-sm { min-height: 36px; padding: 6px 14px; font-size: 13.5px; }
.mfa-center { display: flex; margin: 6px auto 2px; }
.mfa-row { display: flex; gap: 8px; margin-top: 14px; }
.mfa-row .mfa-btn { flex: 1; }
.mfa-check { display: flex; align-items: center; gap: 10px; font-size: 14px; margin: 12px 0 8px; cursor: pointer; min-height: 32px; color: var(--m-text); }
.mfa-check input { width: 20px; height: 20px; margin: 0; flex: none; accent-color: var(--m-focus); cursor: pointer; }
.mfa-qr { width: 196px; height: 196px; margin: 4px auto 0; padding: 12px; background: #fff; border: 1px solid var(--m-line); border-radius: 14px; box-sizing: content-box; }
.mfa-qr svg { display: block; width: 100%; height: 100%; }
.mfa-manual { background: var(--m-soft); border: 1px solid var(--m-line); border-radius: 14px; padding: 12px 14px; margin: 8px 0 4px; }
.mfa-manual[hidden], .mfa-dl[hidden], .mfa-btn[hidden] { display: none; }
.mfa-kv { display: grid; grid-template-columns: 88px minmax(0, 1fr); gap: 8px; font-size: 13.5px; padding: 3px 0; }
.mfa-kv span { color: var(--m-muted); }
.mfa-kv b { font-weight: 600; overflow-wrap: anywhere; }
.mfa-kv code { font-family: ui-monospace, "SF Mono", Consolas, monospace; font-size: 14px; letter-spacing: .5px; overflow-wrap: anywhere; color: var(--m-text); }
.mfa-manual .mfa-btn { margin-top: 8px; }
.mfa-dl { margin-top: 12px; display: grid; gap: 8px; text-align: center; }
.mfa-dl-t { font-size: 14px; color: var(--m-muted); margin: 0; }
.mfa-codes { list-style: none; margin: 0; padding: 12px; display: grid; grid-template-columns: 1fr 1fr; gap: 8px 12px; background: var(--m-soft); border: 1px solid var(--m-line); border-radius: 14px; }
.mfa-codes li { font-family: ui-monospace, "SF Mono", Consolas, monospace; font-size: 15.5px; letter-spacing: 1px; text-align: center; padding: 6px 0; color: var(--m-text); }
.mfa-list { border: 1px solid var(--m-line); border-radius: 14px; overflow: hidden; }
.mfa-li { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 12px 14px; }
.mfa-li + .mfa-li { border-top: 1px solid var(--m-line); }
.mfa-li > div { min-width: 0; }
.mfa-li b { display: block; font-size: 14.5px; font-weight: 600; }
.mfa-li small { display: block; font-size: 13px; color: var(--m-muted); margin-top: 1px; }
.mfa-li .mfa-btn { flex: none; }

/* ---- หน้าชวน (ไม่บังคับ · แสดงครั้งเดียว) ---- */
.mfa-inv { text-align: center; }
.mfa-art { width: 240px; max-width: 100%; margin: 0 auto 22px; }
.mfa-art svg { display: block; width: 100%; height: auto; overflow: visible; }
.mfa-art .a-bg { fill: var(--m-soft); }
.mfa-art .a-ph { fill: var(--m-card); stroke: var(--m-line2); stroke-width: 2; }
.mfa-art .a-scr { fill: var(--bg-soft, var(--n2, #f0f0f3)); }
.mfa-art .a-card { fill: var(--m-card); stroke: var(--m-line); stroke-width: 1; }
.mfa-art .a-card2 { fill: var(--m-card); stroke: var(--m-line); stroke-width: 1; opacity: .7; }
.mfa-art .a-ln, .mfa-art .a-av { fill: var(--m-line2); }
.mfa-art .a-ln2, .mfa-art .a-av2, .mfa-art .a-bar { fill: var(--m-line); }
.mfa-art .a-code { font: 700 15px ui-monospace, "SF Mono", Consolas, monospace; fill: var(--m-text); }
.mfa-art .a-barf { fill: var(--m-focus); }
.mfa-art .a-badge circle { fill: var(--m-ok); stroke: var(--m-card); stroke-width: 4; }
.mfa-art .a-badge path { fill: none; stroke: #fff; stroke-width: 3.2; stroke-linecap: round; stroke-linejoin: round; }
.mfa-art .a-badge { transform-box: fill-box; transform-origin: center; animation: mfaBadge 520ms cubic-bezier(.16, 1, .3, 1) 160ms backwards; }
@keyframes mfaBadge { from { opacity: 0; transform: scale(.6); } }
.mfa-inv-h { font-size: 22px; font-weight: 700; line-height: 1.35; margin: 0 0 8px; text-wrap: balance; }
.mfa-inv-p { font-size: 15.5px; color: var(--m-muted); margin: 0 auto 26px; max-width: 42ch; text-wrap: balance; }
.mfa-inv-p .nw { white-space: nowrap; }
.mfa-later { display: block; width: 100%; min-height: 46px; margin-top: 6px; border: 0; background: none; font: inherit; font-size: 15px; font-weight: 600; color: var(--m-muted); border-radius: 14px; cursor: pointer; }
@media (hover: hover) { .mfa-later:hover { background: var(--m-soft); color: var(--m-text); } }
.mfa-later:active { background: var(--m-soft); }

/* ---- หน้าเข้าสู่ระบบ (index.html): ไม่มีโลโก้ · การ์ดกว้างกลางจอ ---- */
body.mfa-focus .auth-logo, body.mfa-focus .auth-sub { display: none !important; }
body.mfa-focus .auth-card { max-width: 520px; }
.auth-card .card.mfa-card-wide { padding: 40px 44px 28px; border-radius: 28px; }
.mfa-morph { position: fixed; z-index: 5; pointer-events: none; background: var(--m-card, var(--card, #fff)); border: 1px solid var(--line-soft, #e3e3e8); border-radius: 24px; box-shadow: var(--shadow-lg, 0 16px 40px rgba(0, 0, 0, .18)); }
.mfa-morph.go { border-radius: 28px; transition: left 440ms cubic-bezier(.16, 1, .3, 1), top 440ms cubic-bezier(.16, 1, .3, 1), width 440ms cubic-bezier(.16, 1, .3, 1), height 440ms cubic-bezier(.16, 1, .3, 1), border-radius 440ms cubic-bezier(.16, 1, .3, 1); }

/* ---- กล่องกลางจอ (ทุกหน้า รวมหน้าระบบค่าเคมี) ---- */
.mfa-veil { position: fixed; inset: 0; z-index: 10000; display: grid; place-items: center; padding: 18px; background: rgba(0, 0, 0, .38); opacity: 0; transition: opacity 180ms ease-out; overscroll-behavior: contain; }
.mfa-veil.mfa-veil-top { z-index: 10001; }   /* เหนือทุกชั้นของแอป (ภาพขยาย 9999 · กล่องออกจากระบบ 3000/4000) */
.mfa-veil.open { opacity: 1; }
.mfa-dlg { width: 100%; max-width: 480px; max-height: 88dvh; overflow-y: auto; background: var(--m-card); border: 1px solid var(--m-line); border-radius: 20px; box-shadow: var(--m-shadow);
  padding: 20px 18px calc(18px + env(safe-area-inset-bottom)); box-sizing: border-box; transform: translateY(10px) scale(.97); transition: transform 240ms cubic-bezier(.16, 1, .3, 1); font-family: inherit; }
.mfa-veil.open .mfa-dlg { transform: none; }
.menu-item-badge.mfa-badge { font-weight: 600; }
.menu-item-badge.mfa-badge.on { background: var(--ok-bg, #e8f5ec); color: var(--text, #1d1d1f); }
.menu-item-badge.mfa-badge.on::before { content: ""; display: inline-block; width: 6px; height: 6px; border-radius: 50%; background: var(--ok, #1e7e34); margin-right: 5px; vertical-align: 1px; }

@media (max-width: 480px) {
  .auth-card .card.mfa-card-wide { padding: 32px 22px 22px; border-radius: 24px; }
  .mfa-art { width: 200px; }
  .mfa-inv-h { font-size: 20px; }
}
@media (prefers-reduced-motion: reduce) {
  .mfa-art .a-badge { animation: none; }
  .mfa-veil, .mfa-dlg, .mfa-morph.go { transition: none; }
}