/* 2FA settings — professional single-panel layout, Mail Admin theme */

.tfa-page {
  --tfa-ink: #0a0a0a;
  --tfa-muted: #6b7280;
  --tfa-line: #e5e7eb;
  --tfa-bg0: #f3f4f6;
  --tfa-bg1: #fafafa;
  --tfa-surface: #ffffff;
  --tfa-accent: #06b6d4;
  --tfa-accent-hover: #0891b2;
  --tfa-accent-soft: rgba(6, 182, 212, 0.1);
  --tfa-ok: #0e7490;
  --tfa-ok-bg: #ecfeff;
  --tfa-warn: #b45309;
  --tfa-warn-bg: #fff7ed;
  --tfa-danger: #b91c1c;
  --tfa-radius: 6px;
  --tfa-radius-lg: 10px;
  --tfa-font: Inter, "Segoe UI", sans-serif;
  --tfa-mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;

  max-width: 56rem;
  width: 100%;
  margin: 0 auto;
  padding: 1rem 1.25rem 2rem;
  color: var(--tfa-ink);
  font-family: var(--tfa-font);
  box-sizing: border-box;
}

.tfa-shell {
  background: var(--tfa-surface);
  border: 1px solid var(--tfa-line);
  border-radius: var(--tfa-radius-lg);
  box-shadow:
    0 1px 2px rgba(10, 10, 10, 0.04),
    0 8px 24px rgba(10, 10, 10, 0.04);
  overflow: hidden;
}

.tfa-sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Header */
.tfa-hero {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.5rem 1.75rem 0.75rem;
}

.tfa-hero-text {
  min-width: 0;
}

.tfa-page .prefs-title {
  margin: 0;
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.2;
  color: var(--tfa-ink);
}

.tfa-subtitle {
  margin: 0.35rem 0 0;
  font-size: 0.875rem;
  color: var(--tfa-muted);
  font-family: var(--tfa-mono);
  word-break: break-all;
}

.tfa-lede {
  margin: 0;
  padding: 0 1.75rem 1.25rem;
  max-width: 40rem;
  font-size: 0.95rem;
  line-height: 1.5;
  color: var(--tfa-muted);
}

/* Enable */
.tfa-enable-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  padding: 1.15rem 1.75rem;
  border-top: 1px solid var(--tfa-line);
  background: linear-gradient(90deg, var(--tfa-accent-soft), transparent 70%);
}

.tfa-enable-label {
  display: flex;
  align-items: flex-start;
  gap: 0.85rem;
  margin: 0;
  cursor: pointer;
  flex: 1 1 20rem;
  min-width: 0;
}

.tfa-enable-label input[type="checkbox"] {
  margin-top: 0.25rem;
  width: 1.2rem;
  height: 1.2rem;
  flex: 0 0 auto;
  accent-color: var(--tfa-accent);
}

.tfa-enable-copy {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  min-width: 0;
}

.tfa-enable-title {
  font-size: 1.05rem;
  font-weight: 650;
  color: var(--tfa-ink);
}

.tfa-enable-desc {
  font-size: 0.875rem;
  line-height: 1.45;
  color: var(--tfa-muted);
}

.tfa-enable-save-off[hidden],
.tfa-setup-body[hidden] {
  display: none !important;
}

.tfa-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 650;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  white-space: nowrap;
}

.tfa-badge::before {
  content: "";
  width: 0.4rem;
  height: 0.4rem;
  border-radius: 50%;
  background: currentColor;
}

.tfa-badge-on {
  background: var(--tfa-ok-bg);
  color: var(--tfa-ok);
  border: 1px solid rgba(14, 116, 144, 0.22);
}

.tfa-badge-off {
  background: var(--tfa-warn-bg);
  color: var(--tfa-warn);
  border: 1px solid rgba(180, 83, 9, 0.22);
}

/* Buttons */
.tfa-page .button.mainaction,
.tfa-page input.button.mainaction,
.tfa-page button.button.mainaction {
  background: var(--tfa-accent) !important;
  border: 1px solid var(--tfa-accent) !important;
  color: #fff !important;
  border-radius: var(--tfa-radius) !important;
  box-shadow: none !important;
  font-weight: 600 !important;
}

.tfa-page .button.mainaction:hover,
.tfa-page input.button.mainaction:hover,
.tfa-page button.button.mainaction:hover {
  background: var(--tfa-accent-hover) !important;
  border-color: var(--tfa-accent-hover) !important;
}

.tfa-page .button.mainaction:disabled,
.tfa-page input.button.mainaction:disabled,
.tfa-page button.button.mainaction:disabled {
  opacity: 0.45 !important;
  cursor: not-allowed !important;
}

/* Setup */
.tfa-setup-body {
  border-top: 1px solid var(--tfa-line);
}

.tfa-progress {
  list-style: none;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 2rem;
  margin: 0;
  padding: 1rem 1.75rem;
  border-bottom: 1px solid var(--tfa-line);
  background: var(--tfa-bg1);
}

.tfa-progress li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--tfa-muted);
  font-size: 0.85rem;
  font-weight: 550;
  position: relative;
}

.tfa-progress li + li::before {
  content: "";
  position: absolute;
  left: -1.35rem;
  top: 50%;
  width: 0.7rem;
  height: 1px;
  background: var(--tfa-line);
}

.tfa-progress .n {
  width: 1.6rem;
  height: 1.6rem;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--tfa-surface);
  border: 1px solid var(--tfa-line);
  font-size: 0.75rem;
  font-weight: 700;
}

.tfa-progress li.is-active {
  color: var(--tfa-ink);
}

.tfa-progress li.is-active .n {
  background: var(--tfa-accent);
  border-color: var(--tfa-accent);
  color: #fff;
}

.tfa-progress li.is-done {
  color: var(--tfa-ok);
}

.tfa-progress li.is-done .n {
  background: var(--tfa-ok);
  border-color: var(--tfa-ok);
  color: #fff;
}

.tfa-enroll {
  display: grid;
  grid-template-columns: minmax(17rem, 0.95fr) minmax(18rem, 1.05fr);
  gap: 0;
  min-height: 22rem;
}

.tfa-enroll > section {
  padding: 1.75rem 1.75rem 1.85rem;
}

.tfa-enroll-qr {
  border-right: 1px solid var(--tfa-line);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  background:
    radial-gradient(ellipse 80% 60% at 50% 40%, var(--tfa-accent-soft), transparent 70%),
    var(--tfa-surface);
}

.tfa-enroll h3 {
  margin: 0 0 0.4rem;
  font-size: 1.05rem;
  font-weight: 650;
  letter-spacing: -0.015em;
  color: var(--tfa-ink);
  align-self: stretch;
  text-align: left;
}

.tfa-enroll-qr h3 {
  text-align: center;
}

.tfa-hint {
  margin: 0 0 1.15rem;
  font-size: 0.875rem;
  line-height: 1.5;
  color: var(--tfa-muted);
}

.tfa-enroll-qr .tfa-hint {
  text-align: center;
  max-width: 20rem;
}

.tfa-qr-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  flex: 1;
  margin: 0.25rem 0 0;
}

#2FA_qr_code.tfa-qr {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin: 0;
  min-height: 236px;
  min-width: 236px;
  padding: 0.75rem;
  background: #fff;
  border-radius: var(--tfa-radius-lg);
  border: 1px solid var(--tfa-line);
  box-shadow: 0 10px 28px rgba(6, 182, 212, 0.12);
}

#2FA_qr_code.tfa-qr img,
#2FA_qr_code.tfa-qr canvas {
  display: block !important;
  background: #fff !important;
  padding: 0 !important;
  border: 0 !important;
  max-width: 100%;
}

.tfa-enroll-verify {
  display: flex;
  flex-direction: column;
}

.tfa-verify-row {
  display: flex;
  flex-wrap: wrap;
  align-items: stretch;
  gap: 0.65rem;
  margin-bottom: 0.75rem;
}

.tfa-verify-row #2FA_code_to_check {
  flex: 1 1 10rem;
  min-width: 0;
  max-width: 14rem;
  height: 2.85rem;
  padding: 0 0.9rem;
  border: 1px solid var(--tfa-line);
  border-radius: var(--tfa-radius);
  background: var(--tfa-surface);
  color: var(--tfa-ink);
  font-family: var(--tfa-mono);
  font-size: 1.35rem;
  letter-spacing: 0.32em;
  text-align: center;
  text-indent: 0.32em;
}

.tfa-verify-row #2FA_code_to_check:focus {
  outline: none;
  border-color: var(--tfa-accent);
  box-shadow: 0 0 0 3px var(--tfa-accent-soft);
}

.tfa-verify-row #2FA_check_code {
  height: 2.85rem;
  padding: 0 1.25rem;
  border-radius: var(--tfa-radius);
  font-weight: 600;
}

#tfa-check-result {
  min-height: 1.25rem;
  font-weight: 600;
  font-size: 0.9rem;
}

#tfa-check-result.is-ok { color: var(--tfa-ok); }
#tfa-check-result.is-err { color: var(--tfa-danger); }

#tfa-inline-help {
  margin-top: 0.35rem;
  font-size: 0.85rem;
  color: var(--tfa-muted);
  line-height: 1.45;
}

.tfa-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: auto;
  padding-top: 1.35rem;
  border-top: 1px solid var(--tfa-line);
}

.tfa-actions #2FA_save,
.tfa-actions .button.mainaction {
  min-width: 8rem;
  height: 2.6rem;
}

.tfa-btn-ghost,
.tfa-page .button.tfa-btn-ghost {
  background: transparent !important;
  border: 1px solid var(--tfa-line) !important;
  color: var(--tfa-ink) !important;
  border-radius: var(--tfa-radius) !important;
  box-shadow: none !important;
}

.tfa-btn-ghost:hover,
.tfa-page .button.tfa-btn-ghost:hover {
  background: var(--tfa-accent-soft) !important;
  border-color: rgba(6, 182, 212, 0.4) !important;
  color: var(--tfa-accent-hover) !important;
}

.tfa-apps {
  margin: 0.9rem 0 0;
  font-size: 0.8rem;
  color: var(--tfa-muted);
  line-height: 1.4;
}

/* Advanced */
.tfa-advanced {
  border-top: 1px solid var(--tfa-line);
  background: var(--tfa-bg1);
}

.tfa-advanced > summary {
  cursor: pointer;
  list-style: none;
  padding: 1rem 1.75rem;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--tfa-muted);
  user-select: none;
}

.tfa-advanced > summary::-webkit-details-marker {
  display: none;
}

.tfa-advanced > summary::after {
  content: "▾";
  float: right;
  opacity: 0.55;
  color: var(--tfa-accent);
}

.tfa-advanced[open] > summary {
  color: var(--tfa-ink);
  border-bottom: 1px solid var(--tfa-line);
  background: var(--tfa-accent-soft);
}

.tfa-advanced[open] > summary::after {
  transform: rotate(180deg);
}

.tfa-advanced-body {
  padding: 0.35rem 1.75rem 1.35rem;
  background: var(--tfa-surface);
}

.tfa-adv-block {
  padding: 1rem 0;
}

.tfa-adv-block + .tfa-adv-block {
  border-top: 1px solid var(--tfa-line);
}

.tfa-adv-block h4 {
  margin: 0 0 0.35rem;
  font-size: 0.92rem;
  font-weight: 650;
}

.tfa-adv-block .tfa-hint {
  margin-bottom: 0.7rem;
}

.tfa-field-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  align-items: center;
}

.tfa-field-row input[type="text"],
.tfa-field-row input[type="password"] {
  flex: 1 1 16rem;
  min-width: 0;
  font-family: var(--tfa-mono);
  font-size: 0.9rem;
  letter-spacing: 0.03em;
  border-radius: var(--tfa-radius);
  border: 1px solid var(--tfa-line);
  background: var(--tfa-surface);
  color: var(--tfa-ink);
  height: 2.5rem;
  padding: 0 0.75rem;
}

.tfa-field-row input:focus {
  outline: none;
  border-color: var(--tfa-accent);
  box-shadow: 0 0 0 3px var(--tfa-accent-soft);
}

.tfa-recovery-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.55rem;
  margin: 0 0 0.75rem;
  max-width: 24rem;
}

.tfa-recovery-grid input {
  width: 100%;
  box-sizing: border-box;
  text-align: center;
  font-family: var(--tfa-mono);
  font-size: 0.875rem;
  letter-spacing: 0.04em;
  border-radius: var(--tfa-radius);
  border: 1px solid var(--tfa-line);
  background: var(--tfa-bg1);
  color: var(--tfa-ink);
  height: 2.4rem;
}

/* Dark mode */
html.dark-mode .tfa-page,
.dark-mode .tfa-page {
  --tfa-ink: #f3f4f6;
  --tfa-muted: #9ca3af;
  --tfa-line: #262626;
  --tfa-bg0: #0a0a0a;
  --tfa-bg1: #111111;
  --tfa-surface: #171717;
  --tfa-ok-bg: rgba(14, 116, 144, 0.2);
  --tfa-warn-bg: rgba(180, 83, 9, 0.2);
}

html.dark-mode .tfa-badge-on,
.dark-mode .tfa-badge-on {
  color: #67e8f9;
  border-color: rgba(6, 182, 212, 0.35);
}

html.dark-mode .tfa-badge-off,
.dark-mode .tfa-badge-off {
  color: #fdba74;
}

html.dark-mode .tfa-shell,
.dark-mode .tfa-shell {
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.35);
}

@media (max-width: 820px) {
  .tfa-page {
    max-width: none;
    padding: 0.75rem;
  }

  .tfa-enroll {
    grid-template-columns: 1fr;
    min-height: 0;
  }

  .tfa-enroll-qr {
    border-right: 0;
    border-bottom: 1px solid var(--tfa-line);
  }

  .tfa-enroll h3,
  .tfa-enroll-qr h3 {
    text-align: left;
  }

  .tfa-enroll-qr .tfa-hint {
    text-align: left;
    max-width: none;
  }

  .tfa-progress {
    gap: 1.25rem;
  }

  .tfa-progress li + li::before {
    display: none;
  }

  .tfa-verify-row #2FA_code_to_check {
    max-width: none;
  }

  .tfa-hero,
  .tfa-lede,
  .tfa-enable-bar,
  .tfa-enroll > section,
  .tfa-advanced > summary,
  .tfa-advanced-body {
    padding-left: 1.15rem;
    padding-right: 1.15rem;
  }
}