/* FirebaseUI v7 overrides — lib owns form markup; we control spacing & theme */

#firebase-custom-auth.light {
  --fui-primary: #3a3a3c;
  --fui-primary-hover: #2c2c2e;
  --fui-primary-surface: #ffffff;
  --fui-text: #3a3a3c;
  --fui-text-muted: rgba(58, 58, 60, 0.72);
  --fui-background: #ffffff;
  --fui-border: rgba(0, 0, 0, 0.12);
  --fui-input: rgba(0, 0, 0, 0.18);
  --fui-error: #c62828;
  --fui-radius: 8px;
  --fui-radius-card: 12px;
  --auth-gap: 12px;
}

#firebase-custom-auth.dark {
  --fui-primary: #ffffff;
  --fui-primary-hover: rgba(255, 255, 255, 0.88);
  --fui-primary-surface: #121212;
  --fui-text: rgba(255, 255, 255, 0.92);
  --fui-text-muted: rgba(255, 255, 255, 0.65);
  --fui-background: #121212;
  --fui-border: rgba(255, 255, 255, 0.2);
  --fui-input: rgba(255, 255, 255, 0.28);
  --fui-error: #ef5350;
  --fui-radius: 8px;
  --fui-radius-card: 12px;
  --auth-gap: 12px;
}

#firebase-custom-auth {
  width: 100%;
  max-width: 100%;
  min-width: 0;
  overflow-x: hidden;
}

#firebase-custom-auth .fui-form,
#firebase-custom-auth .fui-screen,
#firebase-custom-auth .fui-card {
  background: transparent !important;
  box-shadow: none !important;
  border: none !important;
  width: 100%;
  max-width: 100%;
  min-width: 0;
  padding: 0 !important;
  margin: 0 !important;
}

#firebase-custom-auth .fui-form {
  display: flex !important;
  flex-direction: column !important;
  gap: var(--auth-gap) !important;
  min-width: 0;
}

/* Kill FirebaseUI default space-y; flex gap owns vertical rhythm */
#firebase-custom-auth .fui-form > :not(:last-child),
#firebase-custom-auth .fui-content > :not(:last-child),
#firebase-custom-auth .fui-screen__children > :not(:last-child),
#firebase-custom-auth .fui-card > :not(:last-child) {
  margin-block-start: 0 !important;
  margin-block-end: 0 !important;
  margin-top: 0 !important;
  margin-bottom: 0 !important;
}

#firebase-custom-auth .fui-form fieldset,
#firebase-custom-auth .fui-content,
#firebase-custom-auth .fui-screen__children {
  gap: 0 !important;
}

#firebase-custom-auth .fui-form fieldset {
  margin: 0 !important;
  border: none;
  padding: 0;
}

#firebase-custom-auth .fui-form fieldset label {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 4px !important;
  /* Reserve one error line so showing validation doesn't grow the dialog */
  padding-bottom: 18px;
  color: var(--fui-text);
  min-width: 0;
  max-width: 100%;
}

#firebase-custom-auth .fui-form fieldset label div[data-input-label] {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--auth-gap);
  font-size: 12px;
  font-weight: 600;
  line-height: 1.2;
  color: var(--fui-text);
  margin: 0 !important;
}

#firebase-custom-auth .fui-form fieldset label div[data-input-label] > div:first-child {
  flex-grow: 1;
}

#firebase-custom-auth .fui-form fieldset label div[data-input-description] {
  font-size: 12px;
  color: var(--fui-text-muted);
  margin: 0 !important;
}

#firebase-custom-auth .fui-form fieldset label input,
#firebase-custom-auth .fui-form input {
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  min-height: 42px;
  border-radius: 8px;
  padding: 0 12px;
  font: inherit;
  font-size: 14px;
  line-height: 1.4;
  color: var(--fui-text);
  background-color: transparent;
  border: 1px solid var(--fui-input);
  box-shadow: none !important;
  outline: none;
  /* outline instead of outer ring so focus/error never changes layout size */
  transition: border-color 120ms ease, outline-color 120ms ease;
}

#firebase-custom-auth .fui-form fieldset label input:focus,
#firebase-custom-auth .fui-form input:focus {
  border-color: var(--fui-primary);
  outline: 2px solid color-mix(in srgb, var(--fui-primary) 14%, transparent);
  outline-offset: 0;
  box-shadow: none !important;
}

#firebase-custom-auth .fui-form fieldset label input[aria-invalid='true'],
#firebase-custom-auth .fui-form input[aria-invalid='true'] {
  border-color: var(--fui-error);
  outline: 2px solid color-mix(in srgb, var(--fui-error) 12%, transparent);
  outline-offset: 0;
  box-shadow: none !important;
}

#firebase-custom-auth .fui-error {
  margin: 0 !important;
  font-size: 12px;
  line-height: 1.3;
  color: var(--fui-error);
  max-width: 100%;
  overflow-wrap: anywhere;
  word-break: break-word;
}

/* Field errors sit in reserved padding — no height jump when they appear */
#firebase-custom-auth .fui-form fieldset label > .fui-error {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  min-height: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* Form-level error under Sign In / submit button — reserved slot */
#firebase-custom-auth .fui-form fieldset:has(> button[type='submit']),
#firebase-custom-auth .fui-form fieldset:has(> .fui-button) {
  position: relative;
  padding-bottom: 18px;
  min-width: 0;
}

#firebase-custom-auth .fui-form fieldset > .fui-error,
#firebase-custom-auth .fui-form fieldset > .fui-button + .fui-error,
#firebase-custom-auth .fui-form fieldset > button[type='submit'] + .fui-error {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  margin-top: 0 !important;
  min-height: 16px;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

#firebase-custom-auth .auth-oauth-error {
  margin-top: 4px !important;
  max-width: 100%;
  overflow-wrap: anywhere;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

#firebase-custom-auth .fui-button,
#firebase-custom-auth button[type='submit'] {
  width: 100%;
  min-height: 44px;
  border-radius: 8px;
  border: none;
  text-transform: none;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.01em;
  box-shadow: none !important;
  margin: 0 !important;
  padding-block: 10px !important;
}

#firebase-custom-auth .fui-button:not(.fui-button--secondary),
#firebase-custom-auth button[type='submit'] {
  background-color: var(--fui-primary) !important;
  color: var(--fui-primary-surface) !important;
}

#firebase-custom-auth .fui-button:not(.fui-button--secondary):hover,
#firebase-custom-auth button[type='submit']:hover {
  background-color: var(--fui-primary-hover) !important;
}

#firebase-custom-auth .fui-form__action {
  display: inline-flex;
  width: auto;
  margin: 0 !important;
  padding: 0 !important;
  text-align: left;
  background: transparent;
  border: none;
  cursor: pointer;
  font-size: 12px;
  font-weight: 500;
  color: var(--fui-text-muted);
  text-decoration: none;
}

#firebase-custom-auth .fui-form__action:hover {
  color: var(--fui-text);
  text-decoration: underline;
}

#firebase-custom-auth .fui-form > .fui-form__action {
  display: block;
  width: 100%;
  margin-top: 0 !important;
  text-align: center;
  font-size: 13px;
}

#firebase-custom-auth .fui-divider {
  margin-block: var(--auth-gap) !important;
  align-items: center;
  gap: var(--auth-gap);
  display: flex;
}

#firebase-custom-auth .fui-divider__line {
  background-color: var(--fui-border);
  flex: 1;
  height: 1px;
}

#firebase-custom-auth .fui-divider__text {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--fui-text-muted);
}

#firebase-custom-auth .auth-oauth-icon {
  display: inline-flex;
  width: 18px;
  height: 18px;
}

#firebase-custom-auth .auth-oauth-icon svg {
  width: 18px;
  height: 18px;
}

#firebase-custom-auth .fui-success {
  padding: var(--auth-gap);
  border-radius: 8px;
  background: color-mix(in srgb, var(--fui-primary) 8%, transparent);
  color: var(--fui-text);
  font-size: 13px;
}

#firebase-custom-auth .fui-policies {
  display: none;
}