.materials-heading { max-width: 790px; margin-block: 30px 44px; }
.material-editions { border: 0; padding: 0; margin: 0 0 35px; min-width: 0; }
.material-editions legend { font-size: 1.35rem; font-weight: 800; padding: 0 0 18px; }
.material-edition-choices { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.material-edition { display: flex; align-items: center; gap: 15px; padding: 18px; border: 2px solid var(--line); border-radius: 16px; background: var(--paper); cursor: pointer; }
.material-edition:has(input:checked) { border-color: var(--mint-deep); background: #eef5ef; }
.material-edition:focus-within { outline: 3px solid var(--peach-deep); outline-offset: 3px; }
.material-edition input { accent-color: var(--mint-deep); width: 20px; height: 20px; flex-shrink: 0; }
.material-edition img { width: 85px; height: 110px; object-fit: contain; border: 1px solid var(--line); box-shadow: 3px 4px 0 #deddd2; }
.material-edition-description { display: grid; gap: 8px; line-height: 1.8; }
.material-edition-description strong { font-size: 1.1rem; }
.material-edition-description > span, .material-edition-hint { color: var(--muted); font-size: .88rem; line-height: 1.9; }
.book-cover:has(.book-cover-image) { padding: 0; border: 1px solid #c5c8bd; background: white; min-height: 0; }
.book-cover-image { display: block; width: 100%; height: auto; }
@media(max-width: 750px) { .material-edition-choices { grid-template-columns: 1fr; } }
.material-languages { border: 1px solid var(--line); border-radius: 12px; padding: 20px; margin: 0 0 24px; min-width: 0; }
.material-languages legend { font-weight: 700; padding-inline: 8px; }
.material-language-choices { display: flex; flex-wrap: wrap; gap: 12px; }
.material-language { display: flex; align-items: center; gap: 10px; min-height: 48px; padding: 12px 18px; border: 1px solid var(--line); border-radius: 8px; cursor: pointer; background: var(--paper); }
.material-language:has(input:checked) { border-color: var(--mint-deep); background: var(--mint); }
.material-language:focus-within { outline: 3px solid var(--peach-deep); outline-offset: 3px; }
.material-language input { width: 20px; height: 20px; accent-color: var(--mint-deep); }
.material-version { font-size: .9rem; font-weight: 700; line-height: 1.8; margin: 0 0 12px; }
.materials-heading h1 { font-size: clamp(2rem, 4.6vw, 3.7rem); line-height: 1.35; margin-block: 12px; }
.materials-heading > p:last-child { color: var(--muted); line-height: 1.9; max-width: 660px; }
.lesson-material-callout { display: flex; flex-wrap: wrap; gap: 20px; align-items: center; justify-content: space-between; border-block: 1px solid var(--line); padding: 25px 0; margin-top: 32px; }
.lesson-material-callout h2 { margin: 0 0 8px; font-size: 1.35rem; }
.lesson-material-callout p { margin: 0; color: var(--muted); line-height: 1.8; }
.lesson-material-callout > div { flex: 1 1 420px; }
.material-lesson { margin-block: 32px 48px; }
.material-lesson-heading h2 { max-width: 770px; font-size: clamp(1.4rem, 3vw, 2rem); line-height: 1.7; }
.material-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 15px; }
.material-card { display: flex; flex-direction: column; min-width: 0; border: 1px solid var(--line); border-top: 4px solid var(--mint-deep); padding: 22px 18px; background: var(--paper); border-radius: 3px 20px 3px 20px; }
.material-card:nth-child(2) { border-top-color: var(--peach-deep); }
.material-card:nth-child(3) { border-top-color: var(--ink); }
.material-card:nth-child(4) { border-top-color: #8e693d; }
.material-index { color: var(--mint-deep); font-size: 2.1rem; font-weight: 800; }
.material-meta { font-size: .75rem; color: var(--muted); margin-block: 10px; }
.material-card h3 { font-size: 1.15rem; line-height: 1.8; margin: 0 0 8px; }
.material-description { color: var(--muted); font-size: .88rem; line-height: 1.9; margin-top: 0; }
.material-companion-badge { font-size: .72rem; padding: 6px 9px; background: #f7ead5; border-radius: 4px; }
.material-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-top: auto; padding-top: 15px; }
.material-download, .material-preview { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 10px 15px; border: 1px solid var(--mint-deep); border-radius: 6px; line-height: 1.5; font-size: .86rem; font-weight: 700; text-decoration: none; }
.material-actions [hidden] { display: none; }
.material-download { background: var(--mint-deep); color: white; }
.material-preview { color: var(--ink); background: var(--paper); }
.material-download:hover { background: var(--ink); }
.material-preview:hover { background: var(--mint); }
.material-download:focus-visible,.material-preview:focus-visible,.recording-panel button:focus-visible,.recording-panel summary:focus-visible { outline: 3px solid var(--peach-deep); outline-offset: 3px; }
.material-audio-links { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 20px; }
.material-print-note { border-inline-start: 4px solid var(--peach-deep); padding-inline: 20px; max-width: 830px; margin-bottom: 54px; }
.material-print-note h2 { font-size: 1.1rem; }
.material-print-note p { color: var(--muted); line-height: 1.9; }
.book-section { display: grid; grid-template-columns: 240px minmax(0, 1fr); gap: 48px; padding: 42px; background: #efe9dc; border: 1px solid #d6ccb9; border-radius: 5px 30px 5px 30px; }
.book-cover { display: flex; flex-direction: column; align-self: start; justify-content: space-between; min-height: 320px; aspect-ratio: 8.5 / 11; padding: 28px; background: var(--ink); color: var(--paper); border-inline-start: 12px solid #356057; box-shadow: 8px 9px 0 #d0c6b1; font-family: Vazirmatn, Tahoma, sans-serif; }
.book-cover span { font-size: 1.3rem; font-weight: 700; }
.book-cover b { font-size: 7rem; line-height: 1.4; color: #edba80; }
.book-cover small { line-height: 2; }
.book-copy h2 { font-size: 2rem; line-height: 1.5; margin-block: 10px 14px; }
.book-copy > p { line-height: 1.9; }
.book-copy .material-actions { margin-block: 12px; }
.book-smallprint { font-size: .82rem; color: var(--muted); }
.book-sales { border-top: 1px solid #c8beac; margin-top: 25px; padding-top: 10px; }
.book-sales h3 { margin-bottom: 5px; }
.book-sales p { font-size: .88rem; line-height: 1.8; }
.recording-panel { padding: 28px; max-width: 820px; margin: 24px auto; background: var(--paper); border: 1px solid var(--line); border-top: 5px solid var(--mint-deep); border-radius: 4px 22px 4px 22px; }
.dictation-heading { max-width:820px; margin-inline:auto; }
.dictation-mode-nav { display:grid; grid-template-columns:repeat(4,minmax(0,1fr)); gap:12px; max-width:1040px; margin:26px auto 34px; }
.dictation-mode-nav button { display:flex; align-items:flex-start; gap:12px; min-height:92px; padding:16px; text-align:start; color:var(--ink); background:var(--paper); border:1px solid var(--line); border-top:4px solid #7b5e9e; border-radius:4px 16px 4px 16px; cursor:pointer; }
.dictation-mode-nav button:hover { background:var(--cream); }
.dictation-mode-nav button[aria-selected="true"] { border-color:var(--mint-deep); border-top-color:var(--mint-deep); background:var(--mint); box-shadow:0 5px 18px rgba(31,76,64,.12); }
.dictation-mode-nav button:focus-visible { outline:3px solid var(--peach-deep); outline-offset:3px; }
.dictation-mode-nav button > span:last-child { display:grid; gap:5px; }
.dictation-mode-nav strong { font-size:.95rem; line-height:1.55; }
.dictation-mode-nav small { color:var(--muted); font-size:.75rem; line-height:1.65; }
.dictation-mode-number { display:grid; place-items:center; flex:0 0 30px; width:30px; height:30px; border-radius:50%; color:#60477d; background:#eee5f7; font-weight:800; }
.dictation-mode-nav button[aria-selected="true"] .dictation-mode-number { color:white; background:var(--mint-deep); }
.dictation-mode-panel[hidden] { display:none; }
.dictation-mode-panel:focus { outline:none; }
.dictation-resource-panel { max-width:820px; min-height:310px; margin:24px auto; padding:30px; background:var(--paper); border:1px solid var(--line); border-top:5px solid #7b5e9e; border-radius:4px 22px 4px 22px; }
.dictation-resource-panel h2 { margin-block:8px 12px; font-size:clamp(1.45rem,3vw,2rem); }
.dictation-resource-panel > p { max-width:680px; line-height:1.9; }
.dictation-lesson-name { display:inline-flex; padding:7px 12px; border-radius:999px; color:var(--mint-deep); background:var(--mint); font-weight:800; }
.dictation-guide-steps { display:grid; gap:10px; margin-block:24px; padding-inline-start:28px; line-height:1.9; }
.dictation-script-warning { margin-block:20px; padding:12px 15px; border-inline-start:4px solid var(--peach-deep); background:#fff0e5; font-weight:800; }
.dictation-script-panel #dictation-transcript { margin-top:24px; padding-top:22px; border-top:1px solid var(--line); }
.recording-panel h2 { margin-block: 8px; font-size: 1.7rem; }
.recording-panel p { line-height: 1.8; }
.recording-panel audio { display: block; width: 100%; margin-block: 20px 12px; }
.recording-panel audio[hidden],.dictation-model[hidden] { display:none; }
.recording-status { min-height: 2em; font-weight: 700; }
#dictation-countdown { min-height: 1.8em; color: var(--mint-deep); font-variant-numeric: tabular-nums; }
.recording-controls { display: flex; flex-wrap: wrap; gap: 8px; }
.recording-controls[hidden] { display: none; }
.dictation-transcript-group + .dictation-transcript-group { margin-top:18px; }
.dictation-transcript-group h3 { margin-bottom:8px; }
.dictation-transcript-group ol { margin-block:0; }
.dictation-companion-access { margin-top:18px; padding:16px; border:1px solid var(--line); border-inline-start:4px solid var(--peach-deep); border-radius:8px; background:var(--cream); }
.dictation-companion-access[hidden] { display:none; }
.dictation-companion-access h3 { margin:0 0 6px; font-size:1.05rem; }
.dictation-companion-access p { margin:0; }
.recording-controls button { min-height: 44px; padding: 10px 14px; border: 1px solid var(--line); background: var(--cream); color: var(--ink); border-radius: 6px; }
.recording-controls button:disabled { opacity: .45; cursor: default; }
.recording-panel details { border-top: 1px solid var(--line); margin-top: 24px; padding-top: 10px; }
.recording-panel summary { min-height: 44px; padding: 12px 0; cursor: pointer; }
#dictation-transcript { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 14px 34px; font-size: 1.2rem; line-height: 1.8; }
@media(max-width: 1000px) { .material-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media(max-width: 650px) {
  .material-grid { grid-template-columns: 1fr; }
  .book-section { grid-template-columns: 1fr; padding: 24px; gap: 28px; }
  .book-cover { width: min(100%, 220px); min-height: 280px; margin-inline: auto; }
  .book-copy h2 { font-size: 1.6rem; }
  .recording-panel { padding: 19px; }
  .dictation-mode-nav { grid-template-columns:1fr; gap:9px; margin-block:20px 26px; }
  .dictation-mode-nav button { min-height:72px; padding:13px; }
  .dictation-resource-panel { min-height:0; padding:20px; }
  #dictation-transcript { grid-template-columns:1fr; }
  .material-download,.material-preview { max-width: 100%; overflow-wrap: anywhere; }
  .recording-controls button { flex: 1 1 100px; }
}