/* =========================================================
   CIRA CLASSROOM — Unit Grammar page
   Version: 1.0
   Date: 2026-10-07

   Shared page geometry remains in learning-shell.css.
   This file owns only the Unit Grammar content treatment.
   ========================================================= */

.grammar-lesson,
.grammar-next {
  width: min(100%, var(--classroom-training-max, 900px));
  margin-left: auto;
  margin-right: auto;
}

.grammar-lesson {
  padding: clamp(20px, 4vw, 30px);
  border: 1px solid #eadfc8;
  border-top: 6px solid var(--cira-yellow);
  border-radius: 16px;
  background: linear-gradient(180deg, #fffdf7 0%, #fff9e9 100%);
}

.grammar-lesson__intro {
  width: min(100%, 680px);
  margin: 0 auto 24px;
  text-align: center;
}

.grammar-lesson__eyebrow {
  margin: 0 0 7px;
  color: var(--cira-red);
  font-size: 12px;
  font-weight: 900;
  line-height: 1.3;
  letter-spacing: .11em;
  text-transform: uppercase;
}

.grammar-lesson__intro h4 {
  margin: 0 0 9px;
  color: var(--cira-primary);
  font-size: clamp(1.45rem, 3vw, 2rem);
  line-height: 1.2;
  letter-spacing: -.02em;
}

.grammar-lesson__intro p:last-child {
  margin: 0;
  color: var(--cira-text-muted);
  font-size: 15px;
  line-height: 1.55;
}

.grammar-instagram-embed {
  width: min(100%, 580px);
  margin: 0 auto;
  padding: 12px;
  overflow: hidden;
  border: 1px solid var(--cira-border);
  border-radius: 16px;
  background: var(--cira-surface);
  box-shadow: 0 8px 24px rgba(38, 52, 66, .08);
}

.grammar-instagram-embed .instagram-media {
  min-width: 0 !important;
  width: 100% !important;
  max-width: 540px !important;
  margin: 0 auto !important;
}

.grammar-instagram-embed iframe {
  display: block !important;
  width: 100% !important;
  max-width: 540px !important;
  margin: 0 auto !important;
}

.grammar-instagram-embed blockquote > a {
  min-height: 220px;
  display: grid;
  place-items: center;
  padding: 24px;
  color: var(--cira-red);
  background: var(--cira-surface);
  font-weight: 800;
  line-height: 1.4;
  text-align: center;
  text-decoration: none;
}

.grammar-instagram-embed blockquote > a:hover,
.grammar-instagram-embed blockquote > a:focus-visible {
  text-decoration: underline;
}

.grammar-instagram-fallback {
  width: min(100%, 580px);
  margin: 14px auto 0;
  color: var(--cira-text-muted);
  font-size: 13px;
  line-height: 1.5;
  text-align: center;
}

.grammar-instagram-fallback a {
  color: var(--cira-red);
  font-weight: 750;
}

.grammar-next {
  margin-top: 24px;
  padding: 22px;
  border: 1px solid rgba(246, 201, 46, .72);
  border-radius: var(--cira-radius-panel);
  background: linear-gradient(90deg, #fff6c9, #fbe98b);
}

.grammar-next h4 {
  margin: 0 0 6px;
  color: var(--cira-primary);
  font-size: 22px;
}

.grammar-next p {
  margin: 0 0 16px;
  color: var(--cira-text);
  line-height: 1.5;
}

.grammar-next__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

@media (max-width: 620px) {
  .grammar-lesson {
    padding: 18px 12px;
    border-radius: var(--cira-radius-panel);
  }

  .grammar-lesson__intro {
    margin-bottom: 18px;
  }

  .grammar-instagram-embed {
    width: 100%;
    padding: 5px;
    border-radius: 12px;
  }

  .grammar-instagram-fallback {
    padding-inline: 4px;
  }

  .grammar-next__actions {
    flex-direction: column;
  }

  .grammar-next__actions .button {
    width: 100%;
  }
}