/* Signin + signin-sent.

   Magic-link sign-in form and the post-submit confirmation page.
   Two BEM blocks (.signin, .signin-sent) live in one file because they
   share an editorial language and always ship together. Composition
   rules — alignment, weight, rhythm, focus, completion — are defined in
   docs/design/principles.md; this file is the implementation.

   Cascade-layer note: lives in `components` so reset/layout never
   overrides it, and utility classes always do. */

@layer components {

/* ==============================================
   AUTH SHELL — shared full-viewport flex centering
   ============================================== */

.signin,
.signin-sent {
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: start;
  padding: var(--space-page);
  gap: var(--space-6);
}

/* Inner content cap. The .signin / .signin-sent roots are full-viewport
   centering shells; the content column inside them takes the --content-form
   tier (spacing-foundation D2). Was 24rem (384px); --content-form is 512px,
   an intended widening. */
.signin > *,
.signin-sent > * {
  width: 100%;
  max-width: var(--content-form);
}

/* ==============================================
   SIGNIN — magic-link form
   ============================================== */

.signin__mascot {
  display: block;
  width: 96px;
  height: 96px;
  flex-shrink: 0;
}

/* Header is a row: mascot left, heading+lede stacked to its right.
   Both columns top-aligned (align-items: flex-start) so the tomato's
   top edge matches the heading's cap height — the literal product ask
   from bug #2's auth-shell follow-up. */
.signin__header {
  display: flex;
  flex-direction: row;
  align-items: flex-start;
  gap: var(--space-4);
}

.signin__header-text {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  align-items: flex-start;
}

.signin__heading {
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: var(--leading-tight);
  text-wrap: balance;
}

.signin__lede {
  font-size: var(--text-sm);
  color: var(--md-on-surface-variant);
}

.signin__form {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.signin__field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  text-align: start;
}

.signin__label {
  font-size: var(--text-sm);
  font-weight: 500;
}

.signin__input {
  /* Form input paired with .signin__submit — shares the --control-h
     row height so input + button align (spacing-foundation D3). */
  height: var(--control-h);
  padding: 0 var(--space-3);
  border: 1px solid var(--md-border);
  border-radius: var(--radius-md);
  background: var(--md-surface-container-low);
  font-size: var(--text-base);
  transition:
    border-color var(--motion-spring-fast-effects-duration) var(--motion-spring-fast-effects),
    box-shadow var(--motion-spring-fast-effects-duration) var(--motion-spring-fast-effects);
}

.signin__input:focus-visible {
  outline: none;
  border-color: var(--md-primary);
  box-shadow: var(--focus-ring);
}

/* Helper-text beneath an input. Used by the display_name field on
   /signin (#273 PR2) to make the returning-user contract visible
   ("Used on first sign-in...") without leaking account existence. */
.signin__helper {
  font-size: var(--text-sm);
  color: var(--md-on-surface-variant);
  line-height: var(--leading-normal);
  text-align: start;
}

.signin__terms {
  display: grid;
  grid-template-columns: var(--space-5) 1fr;
  gap: var(--space-2);
  text-align: start;
  color: var(--md-on-surface-variant);
  font-size: var(--text-sm);
  line-height: var(--leading-normal);
}

.signin__terms-input {
  width: var(--space-5);
  height: var(--space-5);
  margin: 0;
  accent-color: var(--md-primary);
}

.signin__terms a {
  color: var(--md-primary-action);
  text-decoration: underline;
}

.signin__submit {
  height: var(--control-h);
  padding: 0 var(--space-6);
  background: var(--md-primary);
  color: var(--md-on-primary);
  border-radius: var(--radius-md);
  font-weight: 500;
  transition: background-color var(--motion-spring-fast-effects-duration) var(--motion-spring-fast-effects);
}

/* Submit button uses .state-layer (globals.css) for hover/active overlay
   per slice B Drift (g); see paste-form.css for the foreground-overlay
   rationale on white-on-tomato surfaces. */
.signin__submit.state-layer::after {
  background: var(--md-on-surface);
}
.signin__submit:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.signin__error {
  padding: var(--space-3) var(--space-4);
  background: var(--md-error-soft);
  color: var(--md-error);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  border: 1px solid var(--md-error);
  text-align: start;
}

.signin__footnote {
  font-size: var(--text-sm);
  color: var(--md-on-surface-variant);
}

/* ==============================================
   SIGNIN-SENT — post-submit confirmation
   ============================================== */

.signin-sent__mascot {
  display: block;
  width: 96px;
  height: 96px;
  flex-shrink: 0;
}

/* Same row-layout pattern as .signin__header — mascot left, heading+body
   stacked to its right, top-aligned. */
.signin-sent__header {
  display: flex;
  flex-direction: row;
  align-items: flex-start;
  gap: var(--space-4);
}

.signin-sent__header-text {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  align-items: flex-start;
}

.signin-sent__heading {
  font-family: var(--font-heading);
  font-size: var(--text-3xl);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: var(--leading-tight);
  text-wrap: balance;
}

.signin-sent__body {
  font-size: var(--text-sm);
  color: var(--md-on-surface-variant);
}

.signin-sent__email {
  font-family: var(--font-mono);
  font-size: 0.95em;
  color: var(--md-on-surface);
  background: var(--md-primary-container);
  /* 1px block padding keeps this inline mono tag tight to its baseline;
     sub-token, kept raw (allowlisted). */
  padding: 1px var(--space-2);
  border-radius: var(--radius-xs);
}

.signin-sent__footnote {
  font-size: var(--text-sm);
  color: var(--md-on-surface-variant);
}

.signin-sent__footnote a {
  color: var(--md-primary-text);
  text-underline-offset: 2px;
}

.signin-sent__footnote a:hover {
  color: var(--md-primary-action);
  text-decoration: underline;
}
}