/*
 * Auth split layout (D-01–D-04, S-05): two equal columns with a 16px gap. Left: 240px logo above the
 * form column (padded 0 96px, vertically centered, forms max 440px). Right: sage photo panel
 * (radius 28px, padding 64px) with the classroom photo, the heading and three check rows.
 */
@layer layout {
  .auth {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 16px;
    min-height: 100vh;
    min-height: 100dvh;
    padding: 16px;
    background: var(--color-bg);
    color: var(--color-text);
  }

  .auth__main {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 32px;
    padding: 0 96px;
  }

  .auth__logo {
    display: block;
    width: 240px;
    height: auto;
    margin-left: -8px;
  }

  /* Heading block: optional chip/back link, H1 38px, intro paragraph */
  .auth__head {
    display: flex;
    flex-direction: column;
    gap: 10px;
  }
  .auth__head--loose { gap: 14px; }

  .auth__title {
    margin: 0;
    font-size: 38px;
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.08;
  }

  .auth__lead {
    margin: 0;
    font-size: 15px;
    line-height: 1.55;
    color: var(--color-neutral-800);
    text-wrap: pretty;
  }
  .auth__lead b { color: var(--color-text); }

  .auth__form {
    display: flex;
    flex-direction: column;
    gap: 18px;
    max-width: 440px;
  }

  .auth__note {
    font-size: 13px;
    line-height: 1.5;
    color: var(--color-neutral-700);
  }

  .auth__panel {
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    gap: 20px;
    padding: 64px;
    overflow: hidden;
    border-radius: var(--radius-card);
    background: var(--color-rail);
    color: var(--color-rail-text-bright);
  }

  .auth__photo {
    flex: 1;
    min-height: 360px;
    overflow: hidden;
    border-radius: var(--radius-row);
    background: var(--color-rail-strong);
  }
  .auth__photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: 50% 40%;
    filter: saturate(0.85) sepia(0.12);
  }

  .auth__panel-title {
    max-width: 460px;
    margin: 0;
    font-size: 40px;
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.1;
    color: var(--color-rail-contrast);
  }

  /* The panel's text (Admin → General, Sign-in page): paragraphs and line breaks. */
  .auth__panel-body {
    max-width: 520px;
    font-size: 15px;
    line-height: 1.6;
  }
  .auth__panel-body p { margin: 0; }
  .auth__panel-body p + p { margin-top: 10px; }

  @media (max-width: 1199px) {
    .auth__main { padding: 0 56px; }
    .auth__panel { padding: 48px; }
  }

  @media (max-width: 1023px) {
    .auth { grid-template-columns: minmax(0, 1fr); }
    .auth__panel { display: none; }
    .auth__main {
      width: 100%;
      max-width: 560px;
      margin: 0 auto;
      padding: 48px 24px;
    }
  }

  @media (max-width: 767px) {
    .auth { padding: 0; }
    .auth__main {
      justify-content: flex-start;
      gap: 26px;
      padding: max(28px, env(safe-area-inset-top)) 22px 32px;
    }
    .auth__logo { width: 180px; margin-left: -6px; }
    .auth__title { font-size: 28px; }
    .auth__form { max-width: none; }
  }
}