/* =========================================================================
 * chapter-linguaskill-presentation.css — SYSTÈME AUTONOME (présentation Linguaskill)
 * Thème clair = :root ; thème sombre = body.dark-mode (toggle par le JS).
 * Contient : thème + accordéons + sidebar + recherche + tableaux + .o/.dropzone
 * + exemples interactifs (.iq-ex). Aucune dépendance à chapter-ielts-light/dark.css.
 * ========================================================================= */

:root{color-scheme:light;--primary-color:#BDBDD9;--secondary-color:black;--text-color:#333;--label-color:black;--label-bg-color:#7f8c8d;--sublabel-color:#102a43;--sublabel-bg-color:#f0f4f8;--bg:#f8f8f8;--bg-article:#fff;--bg-writing-example:#ffffff;--sidebar-bg:#EDEDED;--bg-mark:yellow;--link-color:#3498db;--hover-color:#555;--search-color:black;--border-color:#ddd;--shadow-color:rgba(0, 0, 0, 0.2);--feedback-color:#7f8c8d;--reset-bg:#D6D6D6;--reset-bg-hover:white;--o-bg:#f8f9fa;--o-hover-bg:#E0E0E0;--o-hover:black;--o-selected-bg:#6c757d;--o-correct-bg:#28a745;--o-incorrect-bg:#dc3545;--o-correct-missed-bg:#a8e6a3;--bg-ligne-header:#E8E8E8;--doc-bg:#EBEBF5;--doc-border:#bbb;--bullet-bg:#007bff;--bullet-text:#fff;--search-bg:rgba(255, 255, 255, 0.85);--search-box-bg:rgba(255, 255, 255, 0.95);--search-border:var(--border-color);--search-shadow:rgba(0, 0, 0, 0.15);--enex-text:#4241AB;--frex-text:#55615E;--content-bg:#F5F5F5;--accordion-bg:#e0e0e0;--link-bg:#3498db;--link-bga:white;--link-bgah:#3498db;--sentence-bg:#fafafa;--question-bg:#f5f5f5;--writing-border:#28a745;--ipa-symbol-color:#2a9d8f;--ipa-example-color:#2a9d8f;--exercise-bg:#f8f9fa;--exercise-border:#dee2e6;--input-bg:#ffffff;--input-border:#ced4da;--input-focus:#2a9d8f;--button-bg:#2a9d8f;--button-hover:#238276;--word-btn-bg:#e9ecef;--word-btn-hover:#dee2e6;--word-btn-selected:#2a9d8f;--word-btn-correct:#2d7a2d;--word-btn-incorrect:#c92a2a;--word-btn-missed:#3498db;--dropzone-bg:#f8f9fa;--feedback-blue:#0b66c3;--vc-info-bg:#e8f1fb;--vc-info-fg:#0c447c;--vc-info-bd:#b5d4f4;--vc-warn-bg:#faeeda;--vc-warn-fg:#854f0b;--vc-warn-bd:#fac775;--vc-ok-bg:#e1f5ee;--vc-ok-fg:#0f6e56;--vc-ok-bd:#9fe1cb;--vc-card-bg:var(--bg-article);--vc-card-bd:var(--border-color);--vc-muted:var(--secondary-color)}
html body.dark-mode{color-scheme:dark;--primary-color:#7f8c8d;--secondary-color:#A1A1A1;--text-color:#f0f0f0;--label-color:#d9e2ec;--label-bg-color:#243b53;--sublabel-color:#d9e2ec;--sublabel-bg-color:#243b53;--bg:#121212;--bg-article:#222;--bg-writing-example:#2a2a2a;--sidebar-bg:#2B2A2A;--bg-mark:#FFFDB5;--link-color:#2c3e50;--hover-color:#555;--search-color:white;--border-color:#444;--shadow-color:rgba(0, 0, 0, 0.4);--feedback-color:#7f8c8d;--reset-bg:black;--reset-bg-hover:#404040;--o-bg:#2a2a2a;--o-hover-bg:#3a3a3a;--o-hover:white;--o-selected-bg:#555;--o-correct-bg:#1f7a31;--o-incorrect-bg:#922626;--o-correct-missed-bg:#3f7f3f;--bg-ligne-header:#545454;--doc-bg:#222;--doc-border:#555;--bullet-bg:#555;--bullet-text:#f0f0f0;--search-bg:rgba(34, 34, 34, 0.85);--search-box-bg:rgba(40, 40, 40, 0.95);--search-border:var(--border-color);--search-shadow:rgba(0, 0, 0, 0.6);--enex-text:#8A88FF;--frex-text:#A7C4BC;--content-bg:black;--accordion-bg:#4F4F4F;--link-bg:#2c3e50;--link-bga:gray;--link-bgah:white;--sentence-bg:#2a2a2a;--question-bg:#1a1a1a;--writing-border:#555;--ipa-symbol-color:#d3d3d3;--ipa-example-color:#d3d3d3;--exercise-bg:#2d3748;--exercise-border:#4a5568;--input-bg:#1a202c;--input-border:#4a5568;--input-focus:#63b3a8;--button-bg:#2a9d8f;--button-hover:#238276;--word-btn-bg:#4a5568;--word-btn-hover:#718096;--word-btn-selected:#2a9d8f;--word-btn-correct:#48bb78;--word-btn-incorrect:#f56565;--word-btn-missed:#2980b9}
body.dark-mode{color-scheme:dark;--primary-color:#7f8c8d;--secondary-color:#A1A1A1;--text-color:#f0f0f0;--label-color:#d9e2ec;--label-bg-color:#243b53;--sublabel-color:#d9e2ec;--sublabel-bg-color:#243b53;--bg:#121212;--bg-article:#222;--bg-writing-example:#2a2a2a;--sidebar-bg:#2B2A2A;--bg-mark:#FFFDB5;--link-color:#2c3e50;--hover-color:#555;--search-color:white;--border-color:#444;--shadow-color:rgba(0, 0, 0, 0.4);--feedback-color:#7f8c8d;--reset-bg:black;--reset-bg-hover:#404040;--o-bg:#2a2a2a;--o-hover-bg:#3a3a3a;--o-hover:white;--o-selected-bg:#555;--o-correct-bg:#1f7a31;--o-incorrect-bg:#922626;--o-correct-missed-bg:#3f7f3f;--bg-ligne-header:#545454;--doc-bg:#222;--doc-border:#555;--bullet-bg:#555;--bullet-text:#f0f0f0;--search-bg:rgba(34, 34, 34, 0.85);--search-box-bg:rgba(40, 40, 40, 0.95);--search-border:var(--border-color);--search-shadow:rgba(0, 0, 0, 0.6);--enex-text:#8A88FF;--frex-text:#A7C4BC;--content-bg:black;--accordion-bg:#4F4F4F;--link-bg:#2c3e50;--link-bga:gray;--link-bgah:white;--sentence-bg:#2a2a2a;--question-bg:#1a1a1a;--writing-border:#555;--ipa-symbol-color:#d3d3d3;--ipa-example-color:#d3d3d3;--exercise-bg:#2d3748;--exercise-border:#4a5568;--input-bg:#1a202c;--input-border:#4a5568;--input-focus:#63b3a8;--button-bg:#2a9d8f;--button-hover:#238276;--word-btn-bg:#4a5568;--word-btn-hover:#718096;--word-btn-selected:#2a9d8f;--word-btn-correct:#48bb78;--word-btn-incorrect:#f56565;--word-btn-missed:#2980b9;--dropzone-bg:#1e1e1e;--feedback-blue:#7fb2ff;--vc-info-bg:#13243a;--vc-info-fg:#85b7eb;--vc-info-bd:#1c3454;--vc-warn-bg:#3a2e16;--vc-warn-fg:#ef9f27;--vc-warn-bd:#5a481f;--vc-ok-bg:#103029;--vc-ok-fg:#5dcaa5;--vc-ok-bd:#1d4a3e;--vc-card-bg:var(--bg-article);--vc-card-bd:var(--border-color);--vc-muted:#b8b8b8}

/* ---- Thème, accordéons, sidebar, recherche, tableaux, QCM, drag&drop ---- */
.theme-toggle{cursor:pointer;font-size:1.3rem;background:0 0;border:none;color:var(--text-color);padding:5px 10px}.enex{color:var(--enex-text);font-weight:700}.frex{color:var(--frex-text);font-weight:700}.chapter-header{display:flex;align-items:center;justify-content:space-between;padding:10px 20px;background-color:var(--bg)}.chapter-header h1{margin:0;font-size:1.5rem;color:var(--text-color)}.container{display:flex;align-items:stretch;background-color:var(--content-bg)}.content{flex:1;padding:10px;box-sizing:border-box;overflow:visible;background-color:var(--content-bg)}.sidebar{width:220px;background-color:var(--sidebar-bg);color:var(--text-color);padding:20px;position:sticky;top:0;height:100vh;overflow-y:auto;box-shadow:2px 0 5px var(--shadow-color);transition:background-color .5s,color .5s;z-index:1000;box-sizing:border-box}.sidebar a{color:var(--text-color);text-decoration:none;display:block;padding:8px 12px;border-radius:4px;transition:background-color .3s ease,color .3s ease,font-weight .3s ease;font-weight:400;word-wrap:break-word;overflow-wrap:break-word}.sidebar a.active,.sidebar a:hover{background-color:var(--link-bg);color:#fff;font-weight:700;border-radius:8px}.sidebar ul{list-style:none;padding-left:0;margin-left:0}.btn-container{display:flex;justify-content:center;align-items:center;gap:10px;margin:20px 0;width:100%}.btn{display:inline-block;padding:10px 20px;border:none;border-radius:6px;cursor:pointer;text-decoration:none;text-align:center;background-color:var(--link-bg);color:#fff;font-weight:700}.btn:hover{background-color:var(--link-bga);color:var(--link-bgah)}.icon-btn{width:32px;height:32px;border:none;border-radius:6px;cursor:pointer;display:flex;justify-content:center;align-items:center;font-size:18px;position:relative;transition:background-color .3s ease,color .3s ease;background-color:var(--link-bg);color:#fff;font-weight:700}.icon-btn:hover{background-color:var(--link-bga);color:var(--link-bgah)}.icon-btn.prev::before{content:"▲"}.icon-btn.next::before{content:"▼"}.accordion{background-color:var(--accordion-bg);color:var(--text-color);cursor:pointer;padding:16px;width:100%;border:none;text-align:left;outline:0;font-size:1.15em;font-weight:700;transition:background-color .3s ease,color .3s ease;margin-top:10px;border-radius:8px;box-shadow:0 1px 3px var(--shadow-color)}
.accordion.active,.accordion:hover{background-color:var(--primary-color);color:#fff}
.accordion{
  position:relative;
  padding-right:48px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
}
.accordion::after{
  content:"";
  flex:0 0 auto;
  width:10px;
  height:10px;
  margin-right:4px;
  border-right:2.5px solid currentColor;
  border-bottom:2.5px solid currentColor;
  transform:rotate(45deg);
  transform-origin:center;
  transition:transform .3s ease;
  opacity:.85;
  position:absolute;
  right:18px;
  top:50%;
  margin-top:-6px;
}
.accordion.active::after{
  transform:rotate(-135deg);
}
@media (prefers-reduced-motion:reduce){
  .accordion::after{transition:none}
}
.panel{max-height:0;overflow:hidden;padding:0 12px;margin-top:6px;background-color:var(--bg-article);border-radius:8px;box-sizing:border-box}.panel,.panel li,.panel p{text-align:justify;line-height:1.1}.search-container{display:flex;align-items:center;gap:6px;padding:8px 12px;border-radius:6px;background-color:var(--search-bg);backdrop-filter:blur(8px);width:100%;box-sizing:border-box;margin:0 auto;position:relative;z-index:100;box-shadow:0 2px 8px var(--search-shadow)}.search-container.sticky-controls{background-color:transparent;position:fixed;top:30px;left:50%;transform:translateX(-50%);width:auto;max-width:600px;min-width:300px;border:1px solid var(--search-border);border-radius:8px;padding:12px 18px;z-index:2000;box-shadow:0 4px 16px var(--search-shadow);animation:slideInDesktop .3s ease-out}.search-box{flex:1;min-width:150px;padding:8px 12px;border:1px solid var(--search-border);border-radius:6px;font-size:1rem;color:var(--text-color);background-color:var(--search-box-bg);transition:background-color .3s ease,color .3s ease,border-color .3s ease}.search-box:focus{outline:0;border-color:var(--primary-color);box-shadow:0 0 5px var(--primary-color)}.search-controls{display:flex;align-items:center;gap:6px;flex-shrink:0}#search-count{font-weight:600;color:var(--text-color);min-width:30px;text-align:center}p.q{font-weight:600;margin:10px 0 4px 0;line-height:1.1}p.o{display:block;margin:.4em 0;padding:8px 12px;cursor:pointer;border-radius:6px;line-height:1.3;transition:background-color .3s ease,color .3s ease;background-color:var(--o-bg);color:var(--text-color)}p.o:hover{background-color:var(--o-hover-bg);color:var(--o-hover)}p.o.correct{background-color:var(--o-correct-bg);color:#fff;font-weight:700}p.o.incorrect{background-color:var(--o-incorrect-bg);color:#fff;font-weight:700}p.o.selected{background-color:var(--o-selected-bg);color:#fff;font-weight:700}p.o.correct-missed{background-color:var(--o-correct-missed-bg);color:var(--text-color);font-weight:700}.section audio{width:100%;max-width:500px;margin:1em auto;display:block}.video-container{width:60%;max-width:60%;margin:1em auto}.video-container video{width:100%;aspect-ratio:16/9;border-radius:8px;box-shadow:0 1px 3px var(--shadow-color);display:block;object-fit:cover}.accordion+.panel img,.panel img{width:100%;max-width:500px;height:auto;display:block;margin:10px auto;border-radius:8px;box-shadow:0 4px 8px rgba(0,0,0,.1);object-fit:cover;transition:transform .3s ease,box-shadow .3s ease;cursor:pointer}.accordion+.panel img:hover,.panel img:hover{transform:scale(1.05);box-shadow:0 6px 14px rgba(0,0,0,.15)}mark{background-color:var(--bg-mark);color:var(--text-color);transition:background-color .5s ease,color .5s ease;padding:0 2px}.doc,.transcript{background-color:var(--doc-bg);font-size:.9rem;line-height:1.3;padding:15px 20px;border-radius:6px;margin:15px 0;white-space:pre-wrap;overflow-x:auto;color:var(--text-color)}.transcript{font-size:.8rem}.label{font-weight:700;display:block;margin:15px 0 5px 0;color:var(--text-color)}.writing{background-color:var(--bg-writing-example);padding:20px 25px;border-radius:10px;margin:20px 0;line-height:1.6;font-size:.95rem;font-family:Inter,"Helvetica Neue",Helvetica,Arial,sans-serif;box-shadow:0 4px 12px var(--shadow-color);transition:transform .2s ease,box-shadow .2s ease;overflow-x:auto;white-space:pre-wrap;color:var(--text-color)}.writing:hover{transform:translateY(-2px);box-shadow:0 6px 16px var(--shadow-color)}ul.tirets{list-style-type:none;padding-left:20px;margin:10px 0}ul.tirets li::marker{content:"– ";color:var(--text-color);font-weight:700}.no-bullet{list-style:none}.bullet{display:inline-block;width:20px;height:20px;border:2px solid #333;border-radius:50%;text-align:center;line-height:18px;font-weight:700;margin:0 4px;font-size:14px;background-color:var(--bullet-bg);color:var(--bullet-text);border-color:var(--bullet-bg)}.sentence{display:block;width:fit-content;margin:0 auto 10px auto;text-align:center;font-size:1em;background:var(--sentence-bg);color:var(--text-color);padding:5px;border:1px solid var(--border-color);border-radius:8px;white-space:pre-wrap;box-shadow:0 2px 5px var(--shadow-color);max-width:90%;transition:background-color .3s ease,color .3s ease,border-color .3s ease}.question{background:var(--question-bg);color:var(--text-color);border:1px solid var(--border-color);border-radius:8px;margin-bottom:15px;padding:15px;text-align:justify;transition:background-color .3s ease,color .3s ease,border-color .3s ease}p{margin:0;padding-bottom:10px;text-align:justify}.table-scroll{width:fit-content;max-width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch;margin-left:auto;margin-right:auto}.table,.table-2cols,.table-3cols,.table-4cols,.table-7cols{background-color:var(--bg-article);display:grid;width:fit-content;max-width:100%;margin:1.2em 0;border-radius:8px;overflow:hidden;box-shadow:0 1px 3px var(--shadow-color)}.table,.table-2cols{grid-template-columns:minmax(100px,max-content) minmax(200px,max-content)}.table-3cols{grid-template-columns:minmax(100px,max-content) minmax(120px,max-content) minmax(200px,max-content)}.table-4cols{grid-template-columns:minmax(80px,max-content) minmax(80px,max-content) minmax(100px,max-content) minmax(150px,max-content)}.table-7cols{grid-template-columns:minmax(80px,max-content) minmax(100px,max-content) minmax(100px,max-content) minmax(120px,max-content) minmax(140px,max-content) minmax(160px,max-content) minmax(200px,max-content)}.ligne-header{display:contents}.ligne-header>*{background-color:var(--bg-ligne-header);color:var(--label-color);font-weight:700;padding:12px}.ligne{display:contents}.ligne>.col{padding:5px;color:var(--text-color);line-height:1.4;background-color:var(--bg-article);border-bottom:1px solid var(--border-color);transition:background-color .3s ease}.ligne:last-child>.col{border-bottom:none}.ligne:hover>.col{background-color:var(--sublabel-bg-color)}.table .ligne:nth-child(even)>.col,.table-2cols .ligne:nth-child(even)>.col,.table-3cols .ligne:nth-child(even)>.col{background-color:rgba(0,0,0,.03)}.drop-enabled .options-container{display:flex;flex-direction:column;max-height:200px;overflow-y:auto;margin-bottom:.4em;gap:.25em}.drop-enabled .options-container .o{display:block;padding:4px 8px;border-radius:4px;cursor:grab;background-color:var(--o-bg);transition:background-color .25s ease;line-height:1.15;margin:0;color:var(--text-color)}.drop-enabled .options-container .o:hover{background-color:var(--o-hover-bg)}.drop-enabled .dropzone{border:2px solid var(--border-color);min-height:55px;padding:6px;border-radius:4px;background-color:var(--dropzone-bg);margin-top:.3em;transition:background-color .3s,border-color .3s}.drop-enabled .dropzone ul{list-style:none;padding:0;margin:0}.drop-enabled .dropzone li{margin-bottom:.3em}.drop-enabled .feedbk{margin-top:.3em;font-weight:600;color:var(--feedback-blue);font-size:.95rem}.drop-enabled .dropzone .o.correct{background-color:#28a745;color:#fff;font-weight:700}.drop-enabled .dropzone .o.incorrect{background-color:#dc3545;color:#fff;font-weight:700}.drop-enabled .dropzone .o.correct-missed{background-color:#a8e6a3;color:#000;font-weight:700;opacity:.85;position:relative;padding-left:70px}.drop-enabled .dropzone .o.correct-missed::before{content:"missed";position:absolute;left:8px;top:50%;transform:translateY(-50%);background-color:#28a745;color:#fff;font-size:.7em;font-weight:700;padding:2px 6px;border-radius:3px;white-space:nowrap}#reset-all-btn{padding:6px 14px;font-size:.95rem;border:1px solid var(--border-color);background:var(--reset-bg);border-radius:4px;cursor:pointer;margin:1em auto;color:var(--text-color);transition:background-color .3s,color .3s,border-color .3s;display:block}#reset-all-btn:hover{background:var(--reset-bg-hover)}@keyframes slideIn{from{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}@keyframes slideInDesktop{from{opacity:0;transform:translate(-50%,-10px)}to{opacity:1;transform:translateX(-50%)}}@media (max-width:850px){.table,.table-2cols{grid-template-columns:minmax(80px,max-content) minmax(150px,max-content)}.table-3cols{grid-template-columns:minmax(70px,max-content) minmax(90px,max-content) minmax(150px,max-content)}.table-4cols{grid-template-columns:minmax(60px,max-content) minmax(70px,max-content) minmax(100px,max-content) minmax(130px,max-content)}.table-7cols{grid-template-columns:minmax(50px,max-content) minmax(70px,max-content) minmax(70px,max-content) minmax(80px,max-content) minmax(100px,max-content) minmax(120px,max-content) minmax(150px,max-content)}}@media (max-width:768px){.search-container{position:relative;width:100%;padding:8px 12px;box-sizing:border-box;backdrop-filter:blur(8px);display:flex;align-items:center;gap:8px;border-radius:6px;margin:0 auto}.search-container.sticky-controls{position:fixed;top:20px;left:10px;right:10px;width:auto;min-width:0;max-width:none;margin:0;z-index:2000;padding:10px 15px;background:rgba(var(--bg-color-rgb),.95);backdrop-filter:blur(10px);border-radius:8px;box-shadow:0 4px 12px rgba(0,0,0,.15);animation:slideIn .3s ease-out;transform:none}.search-box{width:100%;min-width:0;flex:1;font-size:.9rem}.search-controls{display:flex;align-items:center;gap:5px;flex-shrink:0}.icon-btn{width:28px;height:28px;font-size:14px;padding:0}#search-count{font-size:.8rem;min-width:24px;text-align:center}.chapter-header{flex-direction:column;align-items:flex-start;gap:10px}.container{flex-direction:column}.sidebar{width:100%;max-height:200px;overflow-y:auto;position:relative;z-index:1000;height:auto;padding:15px}.sidebar a{padding:6px 10px;font-size:.95rem}main{padding:10px;margin:0;overflow:visible}}@media (max-width:600px){.search-container{padding:6px 10px;gap:6px}.search-box{font-size:.85rem;padding:6px 10px}.icon-btn{width:24px;height:24px;font-size:12px}#search-count{font-size:.7rem;min-width:20px}.sidebar{font-size:.9rem;padding:10px}.btn{font-size:12px;padding:6px 12px}p.o,p.q{font-size:.95rem}.accordion+.panel .video-container{margin:.5em 0}.accordion+.panel .video-container video{width:100%;height:auto}.table-scroll{width:100%}.table-2cols{width:100%;grid-template-columns:minmax(100px,1fr) minmax(150px,1fr)}.table,.table-3cols,.table-4cols,.table-7cols{width:100%;min-width:max-content}.table .col,.table-2cols .col,.table-3cols .col,.table-4cols .col,.table-7cols .col{text-align:left;text-align:start}}.quiz-wrapper{background-color:#fff;border-radius:8px;padding:20px;transition:background-color .3s ease}.quiz-question{background-color:#f9fafb;border:1px solid #e5e7eb;border-radius:6px;padding:15px;margin-bottom:20px;transition:background-color .3s ease,border-color .3s ease,opacity .3s ease;max-width:500px}.quiz-question.disabled{pointer-events:none}.quiz-title{color:#111827;font-weight:600;margin-bottom:12px;line-height:1.4;transition:color .3s ease}.quiz-options{display:flex;flex-direction:column;gap:10px}.quiz-option-label{display:flex;align-items:flex-start;gap:12px;padding:12px 14px;background-color:#fff;border:2px solid #d1d5db;border-radius:6px;cursor:pointer;transition:all .3s ease;position:relative}.quiz-option-label::before{content:attr(data-letter);display:inline-flex;align-items:center;justify-content:center;min-width:26px;height:26px;border-radius:50%;background-color:#e5e7eb;color:#374151;font-weight:700;font-size:.85rem;transition:all .3s ease;flex-shrink:0;margin-top:2px}.quiz-option-label:hover{background-color:#f3f4f6;border-color:#9ca3af;transform:translateX(4px)}.quiz-option-label input[type=radio]{position:absolute;opacity:0;width:0;height:0;pointer-events:none}.quiz-option-label span{flex:1;color:#1f2937;line-height:1.5;transition:color .3s ease}.quiz-option-label:has(input:checked){background-color:#dbeafe;border-color:#2563eb}.quiz-option-label:has(input:checked)::before{background-color:#2563eb;color:#fff}.quiz-option-label:has(input:checked) span{color:#1e40af;font-weight:600}.quiz-feedback{margin-top:12px;padding:0;border-radius:6px;line-height:1.5;transition:all .3s ease;background-color:transparent;color:#6b7280}.quiz-feedback:empty{display:none}.quiz-feedback.correct{padding:12px;background-color:#d1fae5;color:#065f46;border:1px solid #a7f3d0;display:block}.quiz-feedback.incorrect{padding:12px;background-color:#fee2e2;color:#991b1b;border:1px solid #fecaca;display:block}.quiz-reset,.quiz-submit{padding:12px 28px;border:none;border-radius:6px;font-weight:600;font-size:1rem;cursor:pointer;transition:all .3s ease;margin-right:12px;margin-top:20px}.quiz-submit{background-color:#2563eb;color:#fff}.quiz-submit:hover{background-color:#1d4ed8;transform:translateY(-2px);box-shadow:0 4px 10px rgba(37,99,235,.3)}.quiz-reset{background-color:#6b7280;color:#fff}.quiz-reset:hover{background-color:#4b5563;transform:translateY(-2px);box-shadow:0 4px 10px rgba(0,0,0,.2)}@keyframes scoreShine{0%,100%{box-shadow:0 4px 15px rgba(37,99,235,.3),inset 0 1px 0 rgba(255,255,255,.8),0 2px 8px rgba(0,0,0,.1)}50%{box-shadow:0 4px 15px rgba(37,99,235,.3),inset 0 1px 0 rgba(255,255,255,.8),0 0 25px 5px rgba(37,99,235,.2)}}.quiz-score{display:inline-block;padding:16px 32px;background:linear-gradient(135deg,#2563eb 0,#3b82f6 50%,#60a5fa 100%);color:#fff;border:2px solid #2563eb;border-radius:12px;font-weight:700;font-size:1.3rem;margin-left:12px;margin-top:20px;transition:all .3s ease;vertical-align:top;box-shadow:0 4px 15px rgba(37,99,235,.3),inset 0 1px 0 rgba(255,255,255,.8),0 2px 8px rgba(0,0,0,.1);text-align:center;letter-spacing:.5px;position:relative;overflow:hidden}.quiz-score::before{content:'';position:absolute;top:-50%;left:-50%;width:200%;height:200%;background:linear-gradient(45deg,transparent 30%,rgba(255,255,255,.3) 50%,transparent 70%);transform:rotate(45deg);transition:all .5s ease}.quiz-score:hover{transform:translateY(-3px) scale(1.02);box-shadow:0 6px 25px rgba(37,99,235,.4),inset 0 1px 0 rgba(255,255,255,.9),0 4px 12px rgba(0,0,0,.15);border-color:#1d4ed8;background:linear-gradient(135deg,#1e40af 0,#2563eb 50%,#3b82f6 100%);animation:scoreShine 2s ease-in-out infinite}.quiz-score:hover::before{left:100%}.quiz-score-text{position:relative;z-index:1;text-shadow:0 1px 3px rgba(0,0,0,.2);font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,'Helvetica Neue',Arial,sans-serif}.quiz-question.disabled .quiz-option-label{cursor:not-allowed}.quiz-question.disabled .quiz-option-label:hover{transform:none}@media (max-width:768px){.quiz-wrapper{padding:15px}.quiz-question{padding:12px}.quiz-option-label{padding:10px 12px;gap:10px}.quiz-option-label::before{min-width:24px;height:24px;font-size:.8rem}.quiz-reset,.quiz-submit{padding:10px 20px;font-size:.95rem;margin-right:8px;width:100%;margin-top:15px}.quiz-score{padding:14px 24px;font-size:1.15rem;margin-left:0;margin-right:0;margin-top:15px;display:block;text-align:center;width:100%;box-sizing:border-box}}@media (max-width:480px){.quiz-wrapper{padding:12px}.quiz-title{font-size:.95rem}.quiz-option-label{padding:8px 10px}.quiz-option-label span{font-size:.9rem}.quiz-reset,.quiz-submit{font-size:.9rem;padding:8px 16px}.quiz-score{padding:12px 20px;font-size:1.05rem}}

/* ============================ EXEMPLES INTERACTIFS ====================== */
/* ---- Variables locales ------------------------------------------------- */
.iq-ex{
  --iq-green:#28a745;
  --iq-red:#dc3545;
  --feedback-blue:#0b66c3;
  color:#1f2937}

/* ---- Texte d'intro et garde-fous de visibilité ------------------------- */
.iq-ex .iq-note{font-size:.9em;opacity:.85;margin:.2rem 0 1.2rem}
.iq-ex p,.iq-ex div{visibility:visible}

/* ---- Groupe (un type de question + son passage) ------------------------ */
.iq-ex .iq-group{
  border:1px solid rgba(127,127,127,.32);
  border-radius:12px;
  padding:1rem 1.1rem;
  margin:1.4rem 0;
  background:rgba(127,127,127,.04)}
.iq-ex .iq-prompt{font-weight:700;font-size:1.05em;margin:0 0 .7rem}
.iq-ex .iq-num{
  display:inline-block;min-width:1.7em;height:1.7em;line-height:1.7em;
  text-align:center;border-radius:50%;
  background:var(--feedback-blue);color:#fff;
  font-size:.8em;margin-right:.5em;font-weight:700}
.iq-ex .iq-lim{font-weight:400;font-size:.82em;opacity:.7}

/* ---- Passage de lecture / transcription -------------------------------- */
.iq-ex .iq-passage{
  display:block !important;visibility:visible !important;
  height:auto !important;max-height:none !important;overflow:visible !important;
  font-size:.95em;line-height:1.55;padding:.7rem .9rem;
  
  margin:0 0 .8rem;background:rgba(127,127,127,.10);
  border-radius:6px;color:#1f2937}
.iq-ex .iq-instr{font-style:italic;opacity:.85;margin:0 0 .8rem;font-size:.92em}

/* ---- Bloc question (séparateur entre questions d'un même groupe) -------- */
.iq-ex .iq-q,.iq-ex .iq-text{padding:.6rem .2rem;margin:.5rem 0;border-top:1px solid rgba(127,127,127,.18)}
.iq-ex .iq-q:first-of-type,.iq-ex .iq-text:first-of-type{border-top:none}

/* ---- Options QCM (.o) -------------------------------------------------- */
.iq-ex .o{
  display:block;width:fit-content;max-width:100%;padding:.45rem .6rem;margin:.28rem 0;
  border:1px solid rgba(127,127,127,.3);border-radius:7px;
  cursor:pointer;transition:background .15s,border-color .15s}
.iq-ex .o:hover{background:rgba(127,127,127,.12)}
.iq-ex .o.selected{font-weight:700;border-color:var(--feedback-blue)}
.iq-ex .o.correct,.iq-ex .iq-input.correct{background:rgba(40,167,69,.18);border-color:var(--iq-green);color:#14532d !important}
.iq-ex .o.incorrect,.iq-ex .iq-input.incorrect{background:rgba(220,53,69,.16);border-color:var(--iq-red);color:#7f1d1d !important}
.iq-ex .o.correct-missed{background:rgba(40,167,69,.10);border:1px dashed var(--iq-green);font-style:italic;color:#14532d !important}

/* ---- Champs texte (complétion / réponse courte) ------------------------ */
.iq-ex .iq-input{padding:.32rem .5rem;border:1px solid rgba(127,127,127,.5);border-radius:6px;font-size:1em;min-width:8rem}

/* ---- Boutons d'action (Vérifier / Réinitialiser) — style unifié ------- */
.iq-ex .iq-check,
.iq-ex .iq-reset,
.iq-ex .iq-dd-check,
.iq-ex .iq-reset-one{
  font:inherit;margin-top:.6rem;margin-right:.5rem;padding:.4rem .9rem;border-radius:7px;
  border:1px solid rgba(127,127,127,.5);cursor:pointer;
  background:rgba(127,127,127,.1);font-weight:600;
  transition:background .15s}
.iq-ex .iq-check:hover,
.iq-ex .iq-reset:hover,
.iq-ex .iq-dd-check:hover,
.iq-ex .iq-reset-one:hover{background:rgba(127,127,127,.22)}
.iq-ex .iq-check:disabled,
.iq-ex .iq-dd-check:disabled{opacity:.5;cursor:default}

/* Le bouton « Réinitialiser » par question reste caché tant que la
   question n'a pas été corrigée ; .iq-revealed l'affiche. */
.iq-ex .iq-reset-one{display:none}
.iq-ex .iq-reset-one.iq-revealed{display:inline-block}

/* ---- Feedback --------------------------------------------------------- */
.iq-ex .feedbk{display:none;margin-top:.6rem;font-size:.94em;color:var(--feedback-blue);font-weight:600}

/* ---- Divers ----------------------------------------------------------- */
.iq-ex details{margin:.4rem 0 .8rem}
.iq-ex summary{cursor:pointer;font-size:.9em;opacity:.8}
.iq-ex audio{width:100%;margin:.3rem 0}
.iq-ex .iq-actions{margin-top:1.3rem}

/* =======================================================================
 * Glisser-déposer (.drop-enabled)
 * ===================================================================== */
.iq-ex .drop-enabled{margin:.4rem 0 .2rem}
.iq-ex .options-container{display:flex;flex-wrap:wrap;gap:.4rem;margin:.2rem 0 .6rem}
.iq-ex .options-container .o{display:inline-block;margin:0;cursor:grab;user-select:none}
.iq-ex .options-container .o:active{cursor:grabbing}
.iq-ex .dropzone{min-height:2.6rem;border:2px dashed rgba(127,127,127,.5);border-radius:8px;padding:.4rem;margin:.2rem 0 .6rem;background:rgba(127,127,127,.05)}
.iq-ex .dropzone ul{list-style:none;display:flex;flex-wrap:wrap;gap:.4rem;margin:0;padding:0}
.iq-ex .dropzone li.empty{min-width:8rem;min-height:2rem;border:1px dashed rgba(127,127,127,.4);border-radius:6px;display:flex;align-items:center;justify-content:center}
.iq-ex .dropzone li.empty .o{margin:0;cursor:default}
.iq-ex .iq-dd-check{margin-top:.3rem}

/* Options déposées : même rendu pâle que les QCM (surcharge éventuelle de CSS_IELTS) */
.iq-ex .dropzone li .o{display:inline-block;padding:.45rem .6rem;border-radius:7px;border:1px solid rgba(127,127,127,.3);background:rgba(127,127,127,.05) !important;color:#1f2937 !important;font-weight:400 !important}
.iq-ex .dropzone li .o.correct{background:rgba(40,167,69,.18) !important;border-color:var(--iq-green) !important;color:#14532d !important}
.iq-ex .dropzone li .o.incorrect{background:rgba(220,53,69,.16) !important;border-color:var(--iq-red) !important;color:#7f1d1d !important}
.iq-ex .dropzone li .o.correct-missed{background:rgba(40,167,69,.10) !important;border:1px dashed var(--iq-green) !important;color:#14532d !important;font-style:italic;font-weight:400 !important}

/* Neutralise tout pseudo-badge hérité, puis recrée le badge « missed » */
.iq-ex .dropzone li .o::before,.iq-ex .dropzone li .o::after{content:none !important;display:none !important}
.iq-ex .dropzone li .o.correct-missed{position:relative;padding-left:4.6rem !important}
.iq-ex .dropzone li .o.correct-missed::before{
  content:'missed' !important;display:inline-flex !important;align-items:center;
  position:absolute;left:.35rem;top:50%;transform:translateY(-50%);
  background:var(--iq-green);color:#fff !important;font-style:normal;font-weight:600;
  font-size:.72em;line-height:1;padding:.18rem .4rem;border-radius:4px;letter-spacing:.02em}

/* =======================================================================
 * Mode sombre (body.dark-mode)
 * ===================================================================== */
.dark-mode .iq-ex{color:#e5e7eb}
.dark-mode .iq-ex .iq-passage{background:rgba(255,255,255,.06);color:#e5e7eb}
.dark-mode .iq-ex .o.correct,.dark-mode .iq-ex .iq-input.correct,.dark-mode .iq-ex .o.correct-missed{color:#86efac !important}
.dark-mode .iq-ex .o.incorrect,.dark-mode .iq-ex .iq-input.incorrect{color:#fca5a5 !important}
.dark-mode .iq-ex .feedbk{color:#7fb2ff}
.dark-mode .iq-ex .dropzone{background:rgba(255,255,255,.05)}
.dark-mode .iq-ex .dropzone li .o{background:rgba(255,255,255,.06) !important;color:#e5e7eb !important}
.dark-mode .iq-ex .dropzone li .o.correct,.dark-mode .iq-ex .dropzone li .o.correct-missed{color:#86efac !important}
.dark-mode .iq-ex .dropzone li .o.incorrect{color:#fca5a5 !important}

/* Bouton global « Reset all examples » : adopte le style des boutons de question */
.iq-ex #reset-all-btn{
  font:inherit;font-weight:600;font-size:1em;
  margin:.6rem 0 0;padding:.4rem .9rem;
  border-radius:7px;border:1px solid rgba(127,127,127,.5);
  background:rgba(127,127,127,.1);color:inherit;cursor:pointer;
  display:inline-block;width:auto;
  transition:background .15s}
.iq-ex #reset-all-btn:hover{background:rgba(127,127,127,.22)}
/* ielts-presentation-visuals — composants illustrés (fusionné) */.vc-hero{display:flex;align-items:center;gap:20px;background-color:var(--doc-bg);border-radius:12px;padding:22px 24px;margin:4px 0 18px;box-shadow:0 1px 3px var(--shadow-color)}.vc-hero__icon{flex-shrink:0;width:84px;height:84px;border-radius:12px;background-color:var(--vc-info-bg);display:flex;align-items:center;justify-content:center}.vc-hero__icon svg{width:50px;height:50px;color:var(--vc-info-fg)}.vc-hero__eyebrow{font-size:.82rem;color:var(--vc-muted);letter-spacing:.04em;margin-bottom:4px}.vc-hero__title{margin:0;font-size:1.5rem;font-weight:700;color:var(--text-color);line-height:1.2}.vc-hero__sub{margin:7px 0 0;font-size:.92rem;color:var(--vc-muted);line-height:1.5}.vc-stats{display:flex;gap:10px;flex-wrap:wrap;margin-top:14px}.vc-stat{display:inline-flex;align-items:center;gap:7px;font-size:.84rem;padding:6px 12px;border-radius:8px;background-color:var(--vc-card-bg);border:1px solid var(--vc-card-bd);color:var(--text-color)}.vc-stat svg{width:15px;height:15px;color:var(--vc-muted);flex-shrink:0}@media (max-width:560px){.vc-hero{flex-direction:column;align-items:flex-start;gap:14px;padding:18px}.vc-hero__icon{width:64px;height:64px}.vc-hero__icon svg{width:38px;height:38px}}.vc-callouts{display:flex;flex-direction:column;gap:13px;margin:16px 0}.vc-callout{display:flex;gap:13px;padding:14px 16px;border-radius:10px;border:1px solid transparent}.vc-callout svg{width:20px;height:20px;flex-shrink:0;margin-top:1px}.vc-callout__title{font-weight:700;font-size:.92rem;margin-bottom:3px}.vc-callout p{margin:0;font-size:.92rem;line-height:1.55;color:var(--text-color);text-align:left}.vc-callout--info{background-color:var(--vc-info-bg);border-color:var(--vc-info-bd)}.vc-callout--info svg,.vc-callout--info .vc-callout__title{color:var(--vc-info-fg)}.vc-callout--warn{background-color:var(--vc-warn-bg);border-color:var(--vc-warn-bd)}.vc-callout--warn svg,.vc-callout--warn .vc-callout__title{color:var(--vc-warn-fg)}.vc-callout--ok{background-color:var(--vc-ok-bg);border-color:var(--vc-ok-bd)}.vc-callout--ok svg,.vc-callout--ok .vc-callout__title{color:var(--vc-ok-fg)}.vc-gauge{margin:18px 0;background-color:var(--vc-card-bg);border:1px solid var(--vc-card-bd);border-radius:12px;padding:18px 20px}.vc-gauge__title{font-weight:700;font-size:1rem;color:var(--text-color);margin:0 0 3px}.vc-gauge__sub{font-size:.82rem;color:var(--vc-muted);margin:0 0 14px}.vc-gauge__bar{display:flex;gap:4px;margin-bottom:6px}.vc-gauge__seg{flex:1;border-radius:6px;padding:9px 4px 7px;text-align:center;display:flex;flex-direction:column;gap:2px}.vc-gauge__band{font-weight:700;font-size:.95rem;line-height:1}.vc-gauge__cefr{font-size:.74rem;opacity:.85;line-height:1}.vc-gauge__seg.s-red{background-color:#f7c1c1;color:#791f1f}.vc-gauge__seg.s-amber{background-color:#fac775;color:#633806}.vc-gauge__seg.s-blue{background-color:#b5d4f4;color:#0c447c}.vc-gauge__seg.s-teal{background-color:#9fe1cb;color:#085041}.vc-gauge__seg.s-green{background-color:#c0dd97;color:#27500a}body.dark-mode .vc-gauge__seg.s-red{background-color:#5a2020;color:#f09595}body.dark-mode .vc-gauge__seg.s-amber{background-color:#4d3a12;color:#fac775}body.dark-mode .vc-gauge__seg.s-blue{background-color:#143150;color:#85b7eb}body.dark-mode .vc-gauge__seg.s-teal{background-color:#0f3d33;color:#5dcaa5}body.dark-mode .vc-gauge__seg.s-green{background-color:#274d12;color:#97c459}.vc-gauge__marks{margin-top:14px;padding-top:12px;border-top:1px solid var(--vc-card-bd);display:flex;flex-direction:column;gap:9px}.vc-mark{display:flex;gap:10px;align-items:flex-start}.vc-mark__dot{width:9px;height:9px;border-radius:50%;margin-top:5px;flex-shrink:0}.vc-mark__dot.d-blue{background-color:#378add}.vc-mark__dot.d-teal{background-color:#1d9e75}.vc-mark__txt{font-size:.86rem;line-height:1.4;color:var(--text-color)}.vc-mark__txt b{font-weight:700}.vc-mark__txt span{display:block;color:var(--vc-muted);font-size:.8rem}.vc-countries{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:12px;margin:16px 0}.vc-country{background-color:var(--vc-card-bg);border:1px solid var(--vc-card-bd);border-radius:12px;padding:15px 17px}.vc-country__head{display:flex;align-items:center;gap:9px;margin-bottom:9px}.vc-flag{width:26px;height:18px;border-radius:3px;flex-shrink:0;box-shadow:0 0 0 1px var(--vc-card-bd)}.vc-country__name{font-weight:700;font-size:.98rem;color:var(--text-color)}.vc-country__note{margin:0 0 9px;font-size:.8rem;color:var(--vc-muted);line-height:1.45}.vc-country__rows{display:flex;flex-direction:column;gap:6px}.vc-country__row{display:flex;justify-content:space-between;gap:10px;font-size:.84rem;align-items:baseline}.vc-country__row span{color:var(--vc-muted)}.vc-country__row b{font-weight:700;color:var(--text-color);white-space:nowrap}.vc-countries__foot{margin:8px 2px 0;font-size:.76rem;color:var(--vc-muted);line-height:1.5}
.vc-parts{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:12px;margin:16px 0}.vc-part{background-color:var(--vc-card-bg);border:1px solid var(--vc-card-bd);border-radius:12px;padding:15px 17px;position:relative}.vc-part__num{display:inline-flex;align-items:center;justify-content:center;width:26px;height:26px;border-radius:50%;background-color:var(--vc-info-bg);color:var(--vc-info-fg);font-weight:700;font-size:.84rem;margin-bottom:9px}.vc-part__title{font-weight:700;font-size:.95rem;color:var(--text-color);margin:0 0 5px;line-height:1.25}.vc-part__meta{font-size:.76rem;color:var(--vc-info-fg);font-weight:700;margin:0 0 6px}.vc-part__desc{margin:0;font-size:.84rem;color:var(--vc-muted);line-height:1.45}
.vc-qtypes{display:grid;grid-template-columns:repeat(auto-fit,minmax(215px,1fr));gap:12px;margin:16px 0}.vc-qtype{background-color:var(--vc-card-bg);border:1px solid var(--vc-card-bd);border-radius:12px;padding:14px 16px}.vc-qtype__head{display:flex;align-items:center;gap:9px;margin-bottom:7px}.vc-qtype__ic{display:inline-flex;align-items:center;justify-content:center;width:30px;height:30px;border-radius:8px;background-color:var(--vc-info-bg);color:var(--vc-info-fg);flex-shrink:0}.vc-qtype__ic svg{width:17px;height:17px}.vc-qtype__name{font-weight:700;font-size:.9rem;color:var(--text-color);line-height:1.2}.vc-qtype p{margin:0;font-size:.82rem;color:var(--vc-muted);line-height:1.5}.vc-tips{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:12px;margin:16px 0}.vc-tip{background-color:var(--doc-bg);border-radius:12px;padding:14px 16px}.vc-tip__head{display:flex;align-items:center;gap:9px;margin-bottom:6px}.vc-tip__head svg{width:19px;height:19px;color:var(--vc-info-fg);flex-shrink:0}.vc-tip__title{font-weight:700;font-size:.9rem;color:var(--text-color);line-height:1.25}.vc-tip p{margin:0;font-size:.82rem;color:var(--vc-muted);line-height:1.55}

/* pv responsive video-container */
@media(max-width:768px){.video-container{width:100%;max-width:100%}}