/* Вход и регистрация (auth.html, T-010). Префикс .auth-. Только токены. */
@layer screens {
  .auth-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: var(--space-6);
    max-width: 30rem;
    margin-inline: auto;
  }
  .auth-aside { display: none; }
  @media (min-width: 900px) {
    .auth-layout {
      grid-template-columns: minmax(0, 1fr) minmax(0, 28rem);
      gap: var(--space-8);
      align-items: center;
      max-width: 64rem;
      min-height: min(72vh, 680px);
    }
    .auth-aside { display: grid; gap: var(--space-5); justify-items: center; text-align: center; }
    /* В состояниях Telegram карточка шире: QR слева, шаги справа */
    body[data-flow-state^="telegram"] .auth-layout { grid-template-columns: minmax(0, 46rem); justify-content: center; }
    body[data-flow-state^="telegram"] .auth-aside { display: none; }
  }
  .auth-aside__photo { width: min(320px, 80%); }
  .auth-aside__text { display: grid; gap: var(--space-3); max-width: 26rem; }
  .auth-aside__quote {
    font-family: var(--font-hand);
    font-style: var(--font-hand-style);
    font-size: calc(var(--fs-xl) * var(--font-display-scale));
    line-height: 1.3;
  }

  .auth-card {
    display: grid;
    gap: var(--space-5);
    padding: var(--space-5) var(--space-4) var(--space-6);
    background: var(--texture-page), var(--color-page);
    border: var(--border-width) var(--border-style) var(--color-line);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-page);
  }
  @media (min-width: 480px) { .auth-card { padding: var(--space-6); } }

  /* Вкладки */
  .auth-tabs {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 4px;
    padding: 4px;
    background: var(--color-surface-2);
    border-radius: var(--radius-btn);
  }
  .auth-tabs__tab {
    min-height: var(--tap);
    border-radius: var(--radius-btn);
    font-weight: 600;
    color: var(--color-ink-muted);
    transition: background-color var(--dur-fast), color var(--dur-fast);
  }
  .auth-tabs__tab[aria-selected="true"] { background: var(--color-page); color: var(--color-ink); box-shadow: var(--shadow-md); font-weight: 700; }
  body:not([data-flow-state="login"]):not([data-flow-state="register"]) .auth-tabs { display: none; }

  /* Панели */
  .auth-panel { display: flex; flex-direction: column; gap: var(--space-4); min-width: 0; }
  .auth-panel__head { display: grid; gap: var(--space-1); }
  .auth-panel__title { font-size: calc(var(--fs-xl) * var(--font-display-scale)); }
  .auth-panel__title:focus { outline: none; }
  .auth-panel--center { align-items: center; text-align: center; padding-block: var(--space-3); }
  .auth-panel--center > .btn--block { margin-top: var(--space-2); }
  .auth-panel__more { justify-content: center; }
  .auth-back { align-self: flex-start; margin-left: calc(var(--space-3) * -1); }
  .auth-email { color: var(--color-ink); overflow-wrap: anywhere; }

  .auth-icon {
    display: grid; place-items: center;
    width: 72px; height: 72px;
    border-radius: var(--radius-pill);
    background: var(--color-accent-soft);
    color: var(--color-accent-ink);
  }
  .auth-icon svg { width: 34px; height: 34px; }
  .auth-icon--ok { background: var(--color-accent); color: var(--color-on-accent); }
  .auth-icon--muted { background: var(--color-surface-2); color: var(--color-ink-muted); }

  /* Форма */
  .auth-form { display: grid; gap: var(--space-4); }
  .auth-form > .btn { margin-top: var(--space-1); }
  .auth-form__row { display: flex; align-items: baseline; justify-content: space-between; gap: var(--space-3); }
  .auth-link { display: inline-flex; align-items: center; min-height: var(--tap); margin-block: calc((var(--tap) - 1.4em) / -2); font-size: var(--fs-sm); font-weight: 600; }
  .auth-switch { text-align: center; color: var(--color-ink-muted); }
  .auth-switch a { font-weight: 700; display: inline-flex; align-items: center; min-height: var(--tap); }
  .auth-social { font-size: var(--fs-base); }

  .auth-pass { position: relative; }
  .auth-pass .input { padding-right: calc(var(--tap) + var(--space-2)); }
  .auth-pass__toggle { position: absolute; right: 2px; top: 50%; translate: 0 -50%; --btn-fg: var(--color-ink-muted); }
  .auth-pass__toggle[aria-pressed="true"] { --btn-fg: var(--color-accent-ink); }

  /* Галочка согласия */
  .auth-check {
    position: relative;
    display: grid;
    grid-template-columns: 26px minmax(0, 1fr);
    gap: var(--space-3);
    align-items: start;
    min-height: var(--tap);
    font-size: var(--fs-sm);
    line-height: 1.45;
    cursor: pointer;
  }
  .auth-check input { position: absolute; left: 0; top: 0; width: 26px; height: 26px; margin: 0; opacity: 0; cursor: pointer; }
  .auth-check__box {
    display: grid; place-items: center;
    width: 26px; height: 26px;
    border: 1.5px solid var(--color-line-strong);
    border-radius: var(--radius-xs);
    background: var(--color-page);
    color: transparent;
    transition: background-color var(--dur-fast), border-color var(--dur-fast);
  }
  .auth-check__box svg { width: 18px; height: 18px; }
  .auth-check input:checked + .auth-check__box { background: var(--color-accent); border-color: var(--color-accent); color: var(--color-on-accent); }
  .auth-check input:focus-visible + .auth-check__box { outline: 3px solid var(--color-focus); outline-offset: 2px; }
  .field--error .auth-check__box { border-color: var(--color-danger); }

  /* ---------- Telegram ---------- */
  .auth-tg__hint {
    font-family: var(--font-hand);
    font-style: var(--font-hand-style);
    font-size: calc(var(--fs-lg) * var(--font-display-scale));
    color: var(--color-secondary-ink);
    line-height: 1.3;
  }
  .auth-tg__body { display: grid; gap: var(--space-5); }
  .auth-tg__steps { display: grid; gap: var(--space-4); align-content: start; }
  .auth-tg__list { display: grid; gap: var(--space-2); padding-left: 1.3em; color: var(--color-ink); }
  .auth-tg__list li::marker { color: var(--color-secondary-ink); font-weight: 700; }

  .auth-qr { display: none; justify-items: center; gap: var(--space-2); margin: 0; text-align: center; }
  .auth-tg__body.is-qr-open .auth-qr { display: grid; order: 2; }
  .auth-qr__code {
    position: relative;
    width: min(240px, 100%);
    padding: var(--space-3);
    background: var(--color-page);
    color: var(--color-ink);
    border: 1px solid var(--color-line-strong);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    transition: transform var(--dur-base) var(--ease-out);
  }
  .auth-qr__code > svg { width: 100%; height: auto; }
  .auth-qr.is-new .auth-qr__code > svg { transform: scaleX(-1); }
  .auth-qr__logo {
    position: absolute;
    left: 50%; top: 50%;
    width: 22%; aspect-ratio: 1;
    translate: -50% -50%;
    padding: 4px;
    background: var(--color-page);
    border-radius: var(--radius-pill);
  }
  .auth-qr-only { display: none; }
  .auth-qr-toggle { justify-self: center; white-space: normal; text-align: center; font-size: var(--fs-sm); }

  .auth-wait {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    min-height: var(--tap);
    padding: var(--space-2) var(--space-4);
    background: var(--color-accent-soft);
    color: var(--color-accent-ink);
    border-radius: var(--radius-btn);
    font-weight: 700;
  }
  .auth-wait__dots { display: inline-flex; gap: 5px; }
  .auth-wait__dots i { width: 8px; height: 8px; border-radius: var(--radius-pill); background: currentColor; animation: auth-dot 1.2s ease-in-out infinite; }
  .auth-wait__dots i:nth-child(2) { animation-delay: 0.2s; }
  .auth-wait__dots i:nth-child(3) { animation-delay: 0.4s; }
  @keyframes auth-dot { 0%, 100% { opacity: 0.25; transform: scale(0.8); } 40% { opacity: 1; transform: none; } }

  .auth-timer { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: var(--space-2); }
  .auth-timer__time { font-weight: 700; color: var(--color-ink); font-variant-numeric: tabular-nums; }
  .auth-timer.is-low .auth-timer__time { color: var(--color-danger); }
  .auth-timer .btn { margin-right: calc(var(--space-3) * -1); }

  .auth-progress { width: min(240px, 100%); height: 4px; border-radius: var(--radius-pill); background: var(--color-line); overflow: hidden; }
  .auth-progress span { display: block; height: 100%; background: var(--color-accent); transform-origin: left; animation: auth-progress 2.4s var(--ease-out) infinite; }
  @keyframes auth-progress { from { transform: scaleX(0); } to { transform: scaleX(1); } }

  /* Десктоп: QR — главный способ, кнопка «Открыть Telegram» вторична */
  @media (min-width: 900px) {
    .auth-tg__body { grid-template-columns: auto minmax(0, 1fr); gap: var(--space-6); align-items: start; }
    .auth-qr { display: grid; order: 0; }
    .auth-tg__body.is-qr-open .auth-qr { order: 0; }
    .auth-qr__code { width: 240px; }
    .auth-qr-only { display: inline; }
    .auth-btn-only, .auth-qr-toggle { display: none; }
    .auth-tg__open { order: 9; --btn-bg: var(--color-page); --btn-fg: var(--color-ink); --btn-border: var(--color-line-strong); box-shadow: none; font-size: var(--fs-base); min-height: var(--tap); }
    .auth-tg__open:hover { --btn-bg: var(--color-surface); }
  }
}