html.auth-checking {
  min-height: 100%;
  background: var(--ui-color-surface-muted);
}

html.auth-checking::after {
  content: "";
  position: fixed;
  z-index: 1000;
  top: 50%;
  left: 50%;
  width: 28px;
  height: 28px;
  margin: -14px 0 0 -14px;
  border: 3px solid var(--ui-color-border);
  border-top-color: var(--ui-color-primary);
  border-radius: 50%;
  animation: auth-session-spin 0.7s linear infinite;
}

html.auth-checking body { visibility: hidden !important; }

@keyframes auth-session-spin {
  to { transform: rotate(360deg); }
}

.auth-gate { display: none; }

body.auth-locked {
  min-height: 100vh;
  padding: var(--ui-space-6);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--ui-color-surface-muted);
  overflow: auto;
}

body.auth-locked > header,
body.auth-locked > div:not(.auth-gate),
body.auth-locked > footer { display: none !important; }

body.auth-locked .auth-gate {
  width: min(100%, 1040px);
  height: min(620px, calc(100vh - 48px));
  min-height: 560px;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  align-items: stretch;
  margin: auto;
  font-family: var(--ui-font-sans);
  background: var(--ui-color-surface);
  border-radius: var(--ui-radius-xl);
  box-shadow: var(--ui-shadow-overlay);
  overflow: hidden;
}

.auth-card {
  width: 100%;
  padding: 56px var(--ui-space-16);
  background: var(--ui-color-surface-subtle);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.auth-brand { display: flex; align-items: center; gap: var(--ui-space-3); margin-bottom: var(--ui-space-6); }
.auth-logo { width: 112px; height: auto; display: block; }
.auth-brand > span {
  padding: var(--ui-space-1) var(--ui-space-2);
  border: var(--ui-border-width) solid var(--ui-color-border-subtle);
  border-radius: var(--ui-radius-sm);
  background: var(--ui-color-page);
  color: var(--ui-color-text-muted);
  font-size: var(--ui-font-size-label);
  font-weight: var(--ui-font-weight-bold);
}

.auth-language { position: relative; margin-left: auto; }
.auth-language > [data-auth-language-trigger] {
  height: var(--ui-control-h-compact);
  padding: 0 var(--ui-control-padding-x-compact);
  border: var(--ui-border-width) solid var(--ui-color-border-subtle);
  border-radius: var(--ui-radius-md);
  background: var(--ui-color-surface);
  color: var(--ui-color-text-muted);
  display: flex;
  align-items: center;
  gap: var(--ui-space-2);
  font: var(--ui-font-weight-bold) var(--ui-font-size-caption)/var(--ui-line-height-caption) var(--ui-font-sans);
  cursor: pointer;
}
.auth-language > [data-auth-language-trigger] .material-symbols-outlined { font-size: 17px; }
.auth-language [data-auth-language-menu] {
  position: absolute;
  z-index: 20;
  right: 0;
  top: var(--ui-control-h-default);
  width: 148px;
  padding: var(--ui-space-2);
  border: var(--ui-border-width) solid var(--ui-color-border-subtle);
  border-radius: var(--ui-radius-md);
  background: var(--ui-color-surface);
  box-shadow: var(--ui-shadow-raised);
}
.auth-language [data-auth-language-menu].hidden { display: none; }
.auth-language [data-auth-language-menu] button {
  width: 100%;
  min-height: var(--ui-control-h-compact);
  padding: 0 var(--ui-control-padding-x-compact);
  border: 0;
  border-radius: var(--ui-radius-sm);
  background: transparent;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--ui-color-text-muted);
  font: var(--ui-font-weight-semibold) var(--ui-font-size-label)/var(--ui-line-height-label) var(--ui-font-sans);
  cursor: pointer;
}
.auth-language [data-auth-language-menu] button:hover { background: var(--ui-color-surface-muted); }
.auth-language [data-auth-language-menu] button.active {
  background: var(--ui-color-primary-subtle);
  color: var(--ui-color-primary);
}
.auth-language [data-auth-locale-check] { font-size: 18px; }

body.auth-locked .auth-gate:is([data-auth-state="password-setup"], [data-auth-state="password-setup-error"]) {
  height: auto;
  max-height: none;
  grid-template-columns: minmax(0, 1.16fr) minmax(360px, .84fr);
}
.auth-gate:is([data-auth-state="password-setup"], [data-auth-state="password-setup-error"]) .auth-card { padding-block: var(--ui-space-8); }
.auth-gate:is([data-auth-state="password-setup"], [data-auth-state="password-setup-error"]) .auth-brand { margin-bottom: var(--ui-space-5); }
.auth-gate:is([data-auth-state="password-setup"], [data-auth-state="password-setup-error"]) .auth-copy { margin-bottom: var(--ui-space-6); }
.auth-gate:is([data-auth-state="password-setup"], [data-auth-state="password-setup-error"]) .auth-copy h2 { font-size: var(--ui-font-size-title-lg); }
.auth-gate:is([data-auth-state="password-setup"], [data-auth-state="password-setup-error"]) .auth-schematic-card { width: min(100%, 340px); }
.auth-gate:is([data-auth-state="password-setup"], [data-auth-state="password-setup-error"]) .auth-visual-copy { max-width: 360px; }
.auth-gate:is([data-auth-state="password-setup"], [data-auth-state="password-setup-error"]) .auth-mode.hidden,
.auth-gate:is([data-auth-state="password-setup"], [data-auth-state="password-setup-error"]) .auth-field.hidden,
.auth-gate:is([data-auth-state="password-setup"], [data-auth-state="password-setup-error"]) .auth-forgot.hidden,
.auth-gate:is([data-auth-state="password-setup"], [data-auth-state="password-setup-error"]) .auth-remember.hidden { display: none; }
.auth-invited-account {
  display: flex;
  align-items: center;
  gap: var(--ui-space-3);
  margin-bottom: var(--ui-space-5);
  padding: var(--ui-space-3) var(--ui-space-4);
  border: var(--ui-border-width) solid var(--ui-color-border-subtle);
  border-radius: var(--ui-radius-md);
  background: var(--ui-color-page);
  color: var(--ui-color-text-muted);
}
.auth-invited-account > .material-symbols-outlined {
  color: var(--ui-color-primary);
  font-size: 22px;
}
.auth-invited-account > span:last-child { min-width: 0; display: grid; gap: var(--ui-space-1); }
.auth-invited-account small {
  font-size: var(--ui-font-size-caption);
  line-height: var(--ui-line-height-caption);
}
.auth-invited-account strong {
  overflow: hidden;
  color: var(--ui-color-text);
  font-size: var(--ui-font-size-label);
  line-height: var(--ui-line-height-label);
  text-overflow: ellipsis;
  white-space: nowrap;
}
.auth-password-rule {
  display: flex;
  align-items: flex-start;
  gap: var(--ui-space-2);
  margin: calc(-1 * var(--ui-space-1)) 0 var(--ui-space-5);
  padding: var(--ui-space-3) var(--ui-space-4);
  border: var(--ui-border-width) solid var(--ui-color-primary-soft);
  border-radius: var(--ui-radius-md);
  background: var(--ui-color-primary-subtle);
  color: var(--ui-color-text-muted);
  font-size: var(--ui-font-size-caption);
  line-height: var(--ui-line-height-body);
}
.auth-password-rule .material-symbols-outlined { color: var(--ui-color-primary); font-size: 18px; }
.auth-field[data-invalid="true"] .auth-input-wrap input {
  border-color: var(--ui-color-danger);
  background: var(--ui-color-surface);
  box-shadow: 0 0 0 3px rgb(var(--ui-rgb-danger) / .14);
}
.auth-field[data-invalid="true"] .auth-input-wrap > .app-icon,
.auth-field[data-invalid="true"] .auth-input-wrap > .material-symbols-outlined { color: var(--ui-color-danger); }
.auth-field-error {
  display: flex;
  align-items: flex-start;
  min-height: 17px;
  color: var(--ui-color-danger);
  font-size: var(--ui-font-size-caption);
  font-weight: var(--ui-font-weight-semibold);
  line-height: var(--ui-line-height-caption);
}
.auth-field-error[hidden] { display: none; }
.auth-invite-recovery {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--ui-space-3);
  padding: var(--ui-space-5);
  border: var(--ui-border-width) solid var(--ui-color-warning-border);
  border-radius: var(--ui-radius-lg);
  background: var(--ui-color-warning-soft);
  color: var(--ui-color-text);
}
.auth-invite-recovery[hidden] { display: none; }
.auth-invite-recovery > .app-icon,
.auth-invite-recovery > .material-symbols-outlined {
  width: 22px;
  height: 22px;
  color: var(--ui-color-warning);
  font-size: 22px;
}
.auth-invite-recovery strong {
  display: block;
  margin-bottom: var(--ui-space-1);
  font-size: var(--ui-font-size-body);
  line-height: var(--ui-line-height-body);
}
.auth-invite-recovery p {
  font-size: var(--ui-font-size-label);
  line-height: var(--ui-line-height-body);
}
.auth-recovery-action {
  grid-column: 1 / -1;
  min-height: var(--ui-control-h-default);
  padding: 0 var(--ui-control-padding-x-default);
  border: var(--ui-border-width) solid var(--ui-color-primary);
  border-radius: var(--ui-radius-md);
  color: var(--ui-color-primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: var(--ui-font-size-body);
  font-weight: var(--ui-font-weight-bold);
  text-decoration: none;
}
.auth-recovery-action:hover { background: var(--ui-color-primary-subtle); }
.auth-invite-invalid .auth-invited-account,
.auth-invite-invalid .auth-field,
.auth-invite-invalid .auth-password-rule,
.auth-invite-invalid .auth-submit,
.auth-invite-invalid .auth-status { display: none; }

.auth-copy { margin-bottom: var(--ui-space-8); }
.auth-mode {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  height: var(--ui-control-h-default);
  margin: -8px 0 var(--ui-space-6);
  padding: var(--ui-space-1);
  border: var(--ui-border-width) solid var(--ui-color-border-subtle);
  border-radius: var(--ui-radius-md);
  background: var(--ui-color-page);
}
.auth-mode-slider {
  position: absolute;
  inset-block: var(--ui-space-1);
  left: var(--ui-space-1);
  width: calc(50% - var(--ui-space-1));
  border-radius: var(--ui-radius-sm);
  background: var(--ui-color-surface);
  box-shadow: var(--ui-shadow-card);
  transition: transform .2s ease;
}
.auth-mode:has(input[value="admin"]:checked) .auth-mode-slider { transform: translateX(100%); }
.auth-mode label {
  position: relative;
  z-index: 1;
  display: grid;
  place-items: center;
  cursor: pointer;
  color: var(--ui-color-text-muted);
  font-size: var(--ui-font-size-label);
  font-weight: var(--ui-font-weight-bold);
}
.auth-mode input { position: absolute; opacity: 0; pointer-events: none; }
.auth-mode label:has(input:checked) { color: var(--ui-color-primary); }
.auth-mode label:has(input:focus-visible) {
  outline: 2px solid var(--ui-color-primary);
  outline-offset: 2px;
  border-radius: var(--ui-radius-sm);
}

.auth-card h2 {
  margin: 0 0 var(--ui-space-2);
  color: var(--ui-color-text);
  font-size: var(--ui-font-size-display);
  line-height: var(--ui-line-height-display);
  font-weight: var(--ui-font-weight-semibold);
  letter-spacing: -.02em;
}
.auth-card p {
  margin: 0;
  color: var(--ui-color-text-muted);
  font-size: var(--ui-font-size-body-lg);
  line-height: var(--ui-line-height-body-lg);
}
.auth-field { display: grid; gap: var(--ui-space-2); margin-bottom: var(--ui-space-5); }
.auth-field label { color: var(--ui-color-text-muted); font-size: var(--ui-font-size-label); font-weight: var(--ui-font-weight-bold); }
.auth-label-row { display: flex; align-items: center; justify-content: space-between; }
.auth-forgot {
  padding: 0;
  border: 0;
  background: none;
  color: var(--ui-color-primary);
  font: var(--ui-font-weight-bold) var(--ui-font-size-label)/var(--ui-line-height-label) var(--ui-font-sans);
  cursor: pointer;
}
.auth-input-wrap { position: relative; }
.auth-input-wrap > .material-symbols-outlined {
  position: absolute;
  z-index: 1;
  left: var(--ui-space-4);
  top: 50%;
  transform: translateY(-50%);
  color: var(--ui-color-text-muted);
  pointer-events: none;
}
.auth-card .auth-input-wrap input {
  width: 100%;
  height: var(--ui-control-h-default);
  padding: 0 var(--ui-control-h-default);
  border: var(--ui-border-width) solid var(--ui-color-border);
  border-radius: var(--ui-radius-md);
  background: var(--ui-color-page);
  color: var(--ui-color-text);
  font: var(--ui-font-weight-medium) 15px/20px var(--ui-font-sans);
  outline: none;
  transition: border-color .16s, box-shadow .16s, background .16s;
}
.auth-card .auth-input-wrap input:focus {
  border-color: var(--ui-color-primary);
  background: var(--ui-color-surface);
  box-shadow: var(--ui-focus-ring);
}
.auth-password-toggle {
  position: absolute;
  right: 2px;
  top: 2px;
  width: var(--ui-control-icon);
  height: var(--ui-control-icon);
  border: 0;
  border-radius: var(--ui-radius-sm);
  background: transparent;
  color: var(--ui-color-text-muted);
  display: grid;
  place-items: center;
  cursor: pointer;
}
.auth-remember {
  display: inline-flex;
  align-items: center;
  gap: var(--ui-space-2);
  margin: 0 0 var(--ui-space-5);
  color: var(--ui-color-text-muted);
  font-size: var(--ui-font-size-body);
  cursor: pointer;
}
.auth-remember input { width: 18px; height: 18px; accent-color: var(--ui-color-primary); }
.auth-submit {
  width: 100%;
  height: var(--ui-control-h-prominent);
  border: var(--ui-border-width) solid var(--ui-color-primary);
  border-radius: var(--ui-radius-md);
  background: var(--ui-color-primary);
  color: var(--ui-color-on-primary);
  font: var(--ui-font-weight-bold) var(--ui-font-size-body)/var(--ui-line-height-body) var(--ui-font-sans);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--ui-space-2);
  cursor: pointer;
  transition: background .16s, transform .16s;
}
.auth-submit:hover { background: var(--ui-color-primary-hover); }
.auth-submit:active { transform: translateY(1px); }
.auth-submit:disabled { opacity: .65; cursor: wait; }
.auth-card .auth-status {
  min-height: 17px;
  margin-top: var(--ui-space-4);
  color: var(--ui-color-text-muted);
  line-height: var(--ui-line-height-caption);
  text-align: center;
  font-size: var(--ui-font-size-caption);
  font-weight: var(--ui-font-weight-semibold);
}
.auth-card .auth-status[data-error="true"] { color: var(--ui-color-danger); }

.auth-visual {
  min-width: 0;
  padding: var(--ui-space-8) var(--ui-space-10);
  border-left: var(--ui-border-width) solid var(--ui-color-border-subtle);
  background: var(--ui-color-surface);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}
.auth-schematic-card {
  position: relative;
  width: min(100%, 405px);
  padding: var(--ui-space-5);
  overflow: hidden;
  border: var(--ui-border-width) solid var(--ui-color-border);
  border-radius: var(--ui-radius-lg);
  background: var(--ui-color-surface-subtle);
  box-shadow: var(--ui-shadow-raised);
}
.auth-schematic-card::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: var(--ui-space-1);
  background: var(--ui-color-primary);
}
.auth-schematic-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--ui-space-3);
  color: var(--ui-color-text-muted);
  font-size: 13px;
  font-weight: var(--ui-font-weight-semibold);
}
.auth-schematic-head > span { display: flex; align-items: center; gap: var(--ui-space-2); }
.auth-schematic-head .material-symbols-outlined { color: var(--ui-color-primary); font-size: 23px; }
.auth-schematic-head b {
  padding: var(--ui-space-1) var(--ui-space-2);
  border-radius: var(--ui-radius-sm);
  background: var(--ui-color-primary-soft);
  color: var(--ui-color-text-muted);
  font-size: 10px;
  letter-spacing: .08em;
}
.auth-schematic-frame {
  aspect-ratio: 1;
  padding: var(--ui-space-3);
  overflow: hidden;
  border: var(--ui-border-width) solid var(--ui-color-border);
  border-radius: var(--ui-radius-md);
  background: var(--ui-color-surface-strong);
}
.auth-schematic-frame img { display: block; width: 100%; height: 100%; object-fit: contain; }
.auth-schematic-lines { display: grid; gap: var(--ui-space-2); margin-top: var(--ui-space-3); }
.auth-schematic-lines i { display: block; height: var(--ui-space-2); border-radius: var(--ui-radius-full); background: var(--ui-color-page); }
.auth-schematic-lines i:first-child { width: 72%; }
.auth-schematic-lines i:last-child { width: 48%; }
.auth-visual-copy { max-width: 430px; text-align: center; margin-top: var(--ui-space-5); }
.auth-visual-copy h3 {
  margin: 0 0 var(--ui-space-1);
  color: var(--ui-color-text);
  font-size: var(--ui-font-size-title-sm);
  line-height: var(--ui-line-height-title-sm);
  font-weight: var(--ui-font-weight-semibold);
}
.auth-visual-copy p {
  margin: 0;
  color: var(--ui-color-text-muted);
  font-size: var(--ui-font-size-label);
  line-height: var(--ui-line-height-body);
}

@media (max-width: 820px) {
  body.auth-locked { padding: 0; }
  .auth-locked .auth-gate {
    display: block !important;
    width: 100% !important;
    height: auto !important;
    min-height: 100vh !important;
    border-radius: 0 !important;
  }
  .auth-card { min-height: 100vh; padding: var(--ui-space-10) var(--ui-space-8); }
  .auth-visual { display: none; }
  .auth-card h2 { font-size: var(--ui-font-size-display); line-height: var(--ui-line-height-display); }
}

@media (max-width: 480px) {
  .auth-brand > [data-auth-product-label] { display: none; }
  .auth-card { padding-inline: var(--ui-space-8); }
  .auth-logo { width: 108px; }
}