/* ═══════════════════════════════════════════════════════════════
   curriculum.css — Styles for Full Course / Curriculum UI
   Matches the warm almond/walnut/gold theme from styles.css.
   WCAG 2.2 AA compliant: 4.5:1 text contrast, 3:1 controls,
   visible focus indicators, reduced-motion support.
   ═══════════════════════════════════════════════════════════════ */

/* ── CONTAINER ── */
.cur-root{display:none;padding:2rem;max-width:84rem;margin:0 auto}
.cur-root.cur-active{display:block;animation:curFadeIn .3s ease}
@keyframes curFadeIn{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}
@media(prefers-reduced-motion:reduce){
  .cur-root.cur-active{animation:none}
  .cur-unit-lessons{transition:none}
  .cur-chip,.cur-chip-order{transition:none}
  .cur-grammar-guide>summary::before{transition:none}
}

/* ── PERSISTENT SAVE STATUS ── */
.cur-save-panel{display:flex;align-items:center;justify-content:flex-end;gap:.75rem;min-width:0;margin:0 0 1rem;padding:.65rem .8rem;background:rgba(44,30,16,.72);border:1px solid rgba(139,122,102,.65);border-radius:10px}
.cur-save-btn{min-height:44px;padding:.55rem 1rem;border:1px solid var(--accent,#C9A84C);border-radius:8px;background:rgba(201,168,76,.12);color:var(--text,#FFFBF5);font:600 .82rem var(--font-body,Inter,sans-serif);cursor:pointer;white-space:nowrap}
.cur-save-btn:hover{background:rgba(201,168,76,.22)}
.cur-save-btn:focus-visible{outline:3px solid var(--accent,#C9A84C);outline-offset:2px}
.cur-save-status{min-width:0;color:var(--muted,#C9B8A4);font-size:.75rem;line-height:1.4;overflow-wrap:anywhere}

/* ── LEVEL SELECTOR ── */
.cur-level-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:1.25rem;margin-bottom:2rem}
.cur-level-card{background:var(--card,#2C1E10);border:2px solid var(--border,#8B7A66);border-radius:14px;padding:1.75rem 1.5rem;cursor:pointer;transition:background-color .2s,border-color .2s,transform .2s,box-shadow .2s;text-align:center;position:relative;overflow:hidden}
.cur-level-card:hover,.cur-level-card:focus-visible{border-color:var(--accent,#C9A84C);background:var(--card-hover,#3A2817);transform:translateY(-2px);box-shadow:0 8px 24px rgba(0,0,0,.35)}
.cur-level-card:focus-visible{outline:3px solid var(--accent,#C9A84C);outline-offset:2px}
.cur-level-card::before{content:'';position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,#1a1a1a 33%,#D98C6A 33% 66%,#C9A84C 66%);opacity:0;transition:opacity .2s}
.cur-level-card:hover::before{opacity:1}
.cur-level-name{font-family:var(--font-display,'Playfair Display',serif);font-size:1.6rem;font-weight:700;margin-bottom:.4rem;color:var(--text,#FFFBF5)}
.cur-level-sub{font-size:.82rem;color:var(--muted,#C9B8A4);margin-bottom:.75rem}
.cur-level-bar{height:6px;background:rgba(255,255,255,.06);border-radius:3px;overflow:hidden;margin-bottom:.4rem}
.cur-level-bar-fill{height:100%;background:linear-gradient(90deg,#D98C6A,#C9A84C);border-radius:3px;transition:width .3s ease}
.cur-level-stat{font-size:.72rem;color:var(--muted,#C9B8A4)}

/* ── UNIT MAP ── */
.cur-map-header{display:flex;align-items:center;gap:1rem;margin-bottom:1.5rem;flex-wrap:wrap}
.cur-map-title{font-family:var(--font-display,'Playfair Display',serif);font-size:1.8rem;font-weight:700}
.cur-map-stats{font-size:.82rem;color:var(--muted,#C9B8A4)}
.cur-continue-btn{margin-left:auto;background:linear-gradient(135deg,#A87B1A,#C9A84C);color:#000;font-weight:700;font-size:.85rem;padding:.55rem 1.2rem;border:none;border-radius:8px;cursor:pointer;transition:transform .15s,box-shadow .15s}
.cur-continue-btn:hover{transform:translateY(-1px);box-shadow:0 4px 12px rgba(201,168,76,.4)}
.cur-continue-btn:focus-visible{outline:3px solid var(--accent,#C9A84C);outline-offset:2px}
.cur-continue-btn:disabled{opacity:.5;cursor:not-allowed;transform:none;box-shadow:none}
.cur-back-btn{background:var(--card,#2C1E10);border:1px solid var(--border,#8B7A66);color:var(--text,#FFFBF5);padding:.45rem .9rem;border-radius:8px;cursor:pointer;font-size:.82rem;transition:background .15s}
.cur-back-btn:hover{background:var(--card-hover,#3A2817)}
.cur-back-btn:focus-visible{outline:3px solid var(--accent,#C9A84C);outline-offset:2px}

/* ── UNIT ACCORDION ── */
.cur-unit{background:var(--card,#2C1E10);border:1px solid var(--border,#8B7A66);border-radius:12px;margin-bottom:.75rem;overflow:hidden}
.cur-unit-header{display:flex;align-items:center;gap:.75rem;padding:1rem 1.25rem;cursor:pointer;transition:background .15s;border:none;background:transparent;width:100%;text-align:left;color:var(--text,#FFFBF5);font-family:inherit;font-size:inherit}
.cur-unit-header:hover{background:var(--card-hover,#3A2817)}
.cur-unit-header:focus-visible{outline:3px solid var(--accent,#C9A84C);outline-offset:-2px;border-radius:12px}
.cur-unit-chevron{width:20px;height:20px;transition:transform .2s;flex-shrink:0;color:var(--muted,#C9B8A4)}
.cur-unit.cur-expanded .cur-unit-chevron{transform:rotate(90deg)}
.cur-unit-title{font-family:var(--font-display,'Playfair Display',serif);font-size:1.05rem;font-weight:600;flex:1}
.cur-unit-progress{font-size:.72rem;color:var(--muted,#C9B8A4);white-space:nowrap}
.cur-unit-lessons{max-height:0;overflow:hidden;transition:max-height .3s ease;padding:0 1.25rem}
.cur-unit.cur-expanded .cur-unit-lessons{max-height:9000px;padding:.5rem 1.25rem 1rem}
.cur-unit-lessons .cur-grammar-guide{margin:.25rem 0 .75rem}
@media(prefers-reduced-motion:reduce){.cur-unit-lessons{transition:none}}

/* ── LESSON ITEMS ── */
.cur-lesson{display:flex;align-items:center;gap:.75rem;padding:.6rem .5rem;border-radius:8px;cursor:pointer;transition:background .12s}
.cur-lesson:hover:not(.cur-lesson-locked){background:rgba(201,168,76,.06)}
.cur-lesson:focus-visible{outline:2px solid var(--accent,#C9A84C);outline-offset:1px}
.cur-lesson-locked{opacity:.5;cursor:not-allowed}
.cur-lesson-icon{width:28px;height:28px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:.75rem;font-weight:700;flex-shrink:0;border:2px solid var(--border,#8B7A66)}
.cur-lesson-icon--available{border-color:var(--accent,#C9A84C);color:var(--accent,#C9A84C)}
.cur-lesson-icon--progress{border-color:#E8B87A;color:#E8B87A;background:rgba(232,184,122,.1)}
.cur-lesson-icon--completed{border-color:var(--correct,#9BC4B0);color:var(--correct,#9BC4B0);background:rgba(155,196,176,.12)}
.cur-lesson-icon--mastered{border-color:#C9A84C;color:#000;background:linear-gradient(135deg,#A87B1A,#C9A84C)}
.cur-lesson-icon--review{border-color:var(--wrong,#FF8A7A);color:var(--wrong,#FF8A7A)}
.cur-lesson-icon--locked{border-color:rgba(139,122,102,.4);color:rgba(139,122,102,.5)}
.cur-lesson-name{font-size:.88rem;flex:1;color:var(--text,#FFFBF5)}
.cur-lesson-locked .cur-lesson-name{color:var(--muted,#C9B8A4)}
.cur-lesson-score{font-size:.72rem;color:var(--muted,#C9B8A4)}

/* ── LESSON VIEW / EXERCISE ── */
.cur-lesson-view{background:var(--card,#2C1E10);border:1px solid var(--border,#8B7A66);border-radius:16px;padding:2rem;margin-bottom:1.25rem}
.cur-lesson-header{display:flex;align-items:center;gap:1rem;margin-bottom:1.25rem;flex-wrap:wrap}
.cur-lesson-info{flex:1;min-width:200px}
.cur-lesson-title{font-size:.78rem;text-transform:uppercase;letter-spacing:.08em;color:var(--muted,#C9B8A4);margin-bottom:.4rem}
.cur-progress-bar{height:6px;background:rgba(255,255,255,.06);border-radius:3px;overflow:hidden}
.cur-progress-fill{height:100%;background:linear-gradient(90deg,#D98C6A,#C9A84C);border-radius:3px;transition:width .28s ease}
.cur-progress-text{font-size:.75rem;color:var(--muted,#C9B8A4);margin-top:.3rem;display:flex;justify-content:space-between}
.cur-score-box{background:var(--card,#2C1E10);border:1px solid var(--border,#8B7A66);border-radius:8px;padding:.5rem 1rem;font-size:.82rem;white-space:nowrap;text-align:center}
.cur-score-box strong{color:var(--accent,#C9A84C);font-size:1rem}

/* ── OPTIONAL GRAMMAR GUIDE ── */
.cur-grammar-guide{background:#241708;border:1px solid var(--border,#8B7A66);border-left:4px solid var(--accent,#C9A84C);border-radius:12px;margin-bottom:1.25rem;overflow:hidden}
.cur-grammar-guide>summary{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:.65rem;min-height:48px;padding:.85rem 1.1rem;cursor:pointer;list-style:none;color:var(--text,#FFFBF5)}
.cur-grammar-guide>summary::-webkit-details-marker{display:none}
.cur-grammar-guide>summary::before{content:'›';color:var(--accent,#C9A84C);font-size:1.45rem;line-height:1;transform-origin:center;transition:transform .15s ease}
.cur-grammar-guide[open]>summary::before{transform:rotate(90deg)}
.cur-grammar-guide>summary:hover{background:rgba(201,168,76,.06)}
.cur-grammar-guide>summary:focus-visible{outline:3px solid var(--accent,#C9A84C);outline-offset:-3px}
.cur-grammar-guide__label{font-weight:700;font-size:.92rem}
.cur-grammar-guide__optional{color:var(--muted,#C9B8A4);font-size:.74rem;text-align:right}
.cur-grammar-guide__body{border-top:1px solid rgba(139,122,102,.65);padding:1.15rem 1.25rem 1.25rem;color:#E8DCCB;font-size:.9rem;line-height:1.75;overflow-wrap:anywhere}
.cur-grammar-guide__body h2{color:var(--text,#FFFBF5);font-family:var(--font-display,'Playfair Display',serif);font-size:1.25rem;line-height:1.35;margin:0 0 .45rem}
.cur-grammar-guide__summary{color:var(--muted,#C9B8A4);margin:0 0 .9rem;line-height:1.6}
.cur-grammar-guide__sub{color:var(--accent,#C9A84C);font-weight:600;font-size:.82rem;letter-spacing:.03em;margin:0 0 .5rem}
.cur-grammar-guide__heading{color:var(--text,#FFFBF5);font-family:var(--font-display,'Playfair Display',serif);font-size:.95rem;margin:1.1rem 0 .5rem;padding-top:.6rem;border-top:1px solid rgba(139,122,102,.35)}
.cur-grammar-guide__rule strong{color:var(--text,#FFFBF5)}
.cur-grammar-guide__rule em{color:#E8B87A;font-style:normal;font-weight:600}
.cur-grammar-guide__rule u{text-decoration-thickness:1px;text-underline-offset:3px}
.cur-grammar-guide__vocab{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:1fr 1fr;gap:.4rem .9rem}
.cur-grammar-guide__vocab li{display:flex;flex-direction:column;gap:.1rem;padding:.4rem .6rem;background:rgba(255,255,255,.03);border:1px solid rgba(139,122,102,.4);border-radius:8px;min-width:0}
.cur-grammar-guide__term{color:var(--text,#FFFBF5);font-weight:600;overflow-wrap:anywhere}
.cur-grammar-guide__gloss{color:var(--muted,#C9B8A4);font-size:.82rem;overflow-wrap:anywhere}
.cur-grammar-guide__reference{color:var(--muted,#C9B8A4);font-size:.73rem;margin:.9rem 0 0;padding-top:.65rem;border-top:1px solid rgba(139,122,102,.35)}

/* ── QUESTION ── */
.cur-q-card{background:var(--card,#2C1E10);border:1px solid var(--border,#8B7A66);border-radius:16px;padding:2rem;margin-bottom:1.25rem}
.cur-q-label{font-size:.72rem;text-transform:uppercase;letter-spacing:.1em;color:var(--muted,#C9B8A4);margin-bottom:1rem;display:flex;align-items:center;gap:.5rem}
.cur-q-label span{background:#D98C6A;color:#fff;font-size:.68rem;padding:.15rem .45rem;border-radius:4px}
.cur-q-text{font-size:1.15rem;line-height:1.75;margin-bottom:1.5rem;color:var(--text,#FFFBF5)}
.cur-q-hint{font-size:.8rem;color:var(--muted,#C9B8A4);margin-bottom:1rem;font-style:italic}

/* ── MCQ CHOICES ── */
.cur-choices{display:grid;gap:.6rem}
.cur-chip{background:rgba(255,255,255,.04);border:2px solid var(--border,#8B7A66);border-radius:10px;padding:.75rem 1.1rem;cursor:pointer;font-size:.92rem;color:var(--text,#FFFBF5);transition:border-color .15s,background .15s,transform .1s;text-align:left;font-family:inherit;width:100%;display:block}
.cur-chip:hover:not(:disabled){border-color:var(--accent,#C9A84C);background:rgba(201,168,76,.06);transform:translateX(3px)}
.cur-chip:focus-visible{outline:3px solid var(--accent,#C9A84C);outline-offset:2px}
.cur-chip:disabled{cursor:not-allowed}
.cur-chip--correct{border-color:var(--correct,#9BC4B0)!important;background:rgba(155,196,176,.12)!important;color:var(--correct,#9BC4B0)!important}
.cur-chip--wrong{border-color:var(--wrong,#FF8A7A)!important;background:rgba(255,138,122,.08)!important;color:var(--wrong,#FF8A7A)!important}
.cur-chip--reveal{border-color:var(--correct,#9BC4B0)!important;background:rgba(155,196,176,.06)!important}

/* ── ORDER / SORT CHIPS ── */
.cur-order-pool{display:flex;flex-wrap:wrap;gap:.5rem;margin-bottom:1rem;min-height:44px}
.cur-order-answer{display:flex;flex-wrap:wrap;gap:.5rem;min-height:44px;padding:.75rem;border:2px dashed var(--border,#8B7A66);border-radius:10px;margin-bottom:1rem}
.cur-chip-order{background:rgba(201,168,76,.08);border:2px solid var(--border,#8B7A66);border-radius:8px;padding:.5rem .9rem;cursor:pointer;font-size:.88rem;color:var(--text,#FFFBF5);transition:border-color .12s,background .12s,transform .1s;user-select:none;-webkit-user-select:none}
.cur-chip-order:hover{border-color:var(--accent,#C9A84C);transform:scale(1.03)}
.cur-chip-order:focus-visible{outline:3px solid var(--accent,#C9A84C);outline-offset:2px}
.cur-chip-order.cur-placed{opacity:.35;pointer-events:none}
.cur-chip-order--correct{border-color:var(--correct,#9BC4B0)!important;background:rgba(155,196,176,.12)!important}
.cur-chip-order--wrong{border-color:var(--wrong,#FF8A7A)!important;background:rgba(255,138,122,.08)!important}

/* ── FEEDBACK ── */
.cur-feedback{padding:1rem 1.25rem;border-radius:10px;margin-bottom:1rem;font-size:.88rem;line-height:1.6;animation:curFadeIn .2s ease}
.cur-feedback--correct{background:rgba(155,196,176,.1);border:1px solid var(--correct,#9BC4B0);color:var(--correct,#9BC4B0)}
.cur-feedback--wrong{background:rgba(255,138,122,.08);border:1px solid var(--wrong,#FF8A7A);color:var(--wrong,#FF8A7A)}
.cur-feedback strong{color:var(--text,#FFFBF5)}

/* ── NEXT / ACTIONS ── */
.cur-next-btn{background:linear-gradient(135deg,#A87B1A,#C9A84C);color:#000;font-weight:700;font-size:.88rem;padding:.6rem 1.5rem;border:none;border-radius:8px;cursor:pointer;transition:transform .12s,box-shadow .12s;margin-top:.5rem}
.cur-next-btn:hover{transform:translateY(-1px);box-shadow:0 4px 12px rgba(201,168,76,.4)}
.cur-next-btn:focus-visible{outline:3px solid var(--accent,#C9A84C);outline-offset:2px}

/* ── RESULTS ── */
.cur-results{text-align:center;padding:2rem}
.cur-results-score{font-family:var(--font-display,'Playfair Display',serif);font-size:2.5rem;font-weight:700;color:var(--accent,#C9A84C);margin-bottom:.5rem}
.cur-results-sub{color:var(--muted,#C9B8A4);font-size:.92rem;margin-bottom:1.5rem}
.cur-results-badge{display:inline-block;padding:.4rem 1rem;border-radius:20px;font-size:.82rem;font-weight:600;margin-bottom:1.5rem}
.cur-results-badge--mastered{background:linear-gradient(135deg,#A87B1A,#C9A84C);color:#000}
.cur-results-badge--passed{background:rgba(155,196,176,.15);border:1px solid var(--correct,#9BC4B0);color:var(--correct,#9BC4B0)}
.cur-results-badge--retry{background:rgba(255,138,122,.1);border:1px solid var(--wrong,#FF8A7A);color:var(--wrong,#FF8A7A)}
.cur-results-actions{display:flex;gap:.75rem;justify-content:center;flex-wrap:wrap}

/* ── LIVE REGION (sr-only) ── */
.cur-sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* ── RESPONSIVE ── */
@media(max-width:600px){
  .cur-root{padding:1rem;max-width:100%;overflow-x:hidden}
  .cur-save-panel{align-items:stretch;flex-direction:column;gap:.45rem}
  .cur-save-btn{width:100%}
  .cur-save-status{text-align:center}
  .cur-level-grid{grid-template-columns:1fr 1fr;gap:.75rem}
  .cur-level-card{padding:1.25rem .85rem;min-width:0}
  .cur-map-header{flex-direction:column;align-items:stretch}
  .cur-continue-btn{margin-left:0;width:100%;min-height:44px}
  .cur-back-btn,.cur-next-btn{min-height:44px}
  .cur-unit-header{padding:.9rem .85rem}
  .cur-unit-lessons,.cur-unit.cur-expanded .cur-unit-lessons{padding-left:.85rem;padding-right:.85rem}
  .cur-lesson{min-height:44px;padding:.55rem .25rem}
  .cur-lesson-name{min-width:0;overflow-wrap:anywhere}
  .cur-lesson-header{align-items:stretch}
  .cur-lesson-info{min-width:0;width:100%}
  .cur-progress-text{gap:.5rem;flex-wrap:wrap}
  .cur-score-box{margin-left:auto}
  .cur-grammar-guide>summary{grid-template-columns:auto 1fr;padding:.8rem .9rem}
  .cur-grammar-guide__optional{grid-column:2;text-align:left}
  .cur-grammar-guide__body{padding:1rem;font-size:.88rem}
  .cur-grammar-guide__vocab{grid-template-columns:1fr}
  .cur-q-card,.cur-lesson-view{padding:1.1rem;min-width:0}
  .cur-q-text{font-size:1.05rem;overflow-wrap:anywhere}
  .cur-chip,.cur-chip-order{min-height:44px;overflow-wrap:anywhere;word-break:break-word}
  .cur-order-answer,.cur-order-pool{max-width:100%}
  .cur-results{padding:1.25rem .25rem}
  .cur-results-score{font-size:2rem}
}
@media(max-width:380px){
  .cur-level-grid{grid-template-columns:1fr}
  .cur-map-title{font-size:1.55rem}
}