*,*:before,*:after{box-sizing:border-box}body{margin:0;padding:0}.app-layout{display:grid;grid-template-columns:auto 1fr;height:100vh;overflow:hidden}.main-content{display:flex;flex-direction:column;overflow-y:auto}.app-header{display:none;align-items:center;padding:0 2rem;height:70px;border-bottom:1px solid #ddd;background-color:#fff;flex-shrink:0}.title-group h1{font-size:1.5rem;color:#333}.learning-container{flex-grow:1;display:flex;justify-content:center;align-items:center;padding:1rem}.hamburger-menu{display:none;background:none;border:none;padding:10px;margin-right:1rem;cursor:pointer;flex-direction:column;gap:5px;z-index:1001}.hamburger-menu span{display:block;width:25px;height:3px;background-color:#333;border-radius:3px}.overlay{display:none}@media (max-width: 1023px){.app-layout{display:block}.app-header{display:flex}.sidebar{position:fixed;top:0;left:0;height:100%;z-index:1000;transform:translate(-100%);transition:transform .3s ease-in-out;width:300px;max-width:90vw;box-shadow:5px 0 15px #0000001a}.sidebar.open{transform:translate(0)}.hamburger-menu{display:flex}.overlay{display:block;position:fixed;top:0;left:0;width:100%;height:100%;background-color:#00000080;z-index:999}.app-header{padding:0 1rem}}.sidebar{background-color:#f4f4f8;padding:1.5rem;display:flex;flex-direction:column;border-right:1px solid #ddd;transition:transform .3s ease-in-out}.sidebar-header{margin-bottom:2rem;text-align:center}.sidebar-header h1{margin:0;font-size:1.8rem;color:#333;overflow-wrap:break-word}@media (max-width: 1023px){.sidebar-header h1{font-size:1.6rem}}.sidebar-nav{flex-grow:1}.sidebar-nav h2{font-size:.8rem;text-transform:uppercase;color:#888;margin:0 0 .5rem;padding-bottom:.5rem;border-bottom:1px solid #ddd}.sidebar-nav ul{list-style-type:none;padding:0;margin:0}.sidebar-footer{margin-top:auto}.nav-item{display:block;width:100%;padding:.8rem 1rem;margin-bottom:.5rem;background-color:transparent;border:none;border-radius:8px;text-align:left;font-size:1rem;font-family:inherit;cursor:pointer;transition:background-color .2s ease,color .2s ease;color:#444;text-decoration:none}.nav-item:hover{background-color:#e8e8ee}.nav-item.active{background-color:#6a5acd;color:#fff;font-weight:600}.modal-backdrop{position:fixed;top:0;left:0;width:100vw;height:100vh;background-color:#000000b3;display:flex;justify-content:center;align-items:center;z-index:2000;padding:1rem}.modal-content{background-color:#fff;padding:1rem;border-radius:12px;width:100%;max-width:550px;display:flex;flex-direction:column;gap:1.5rem;box-shadow:0 10px 30px #0000004d}.modal-content h2{text-align:center;color:#333;margin-top:0}.modal-scroll-wrapper{padding:1rem;display:flex;flex-direction:column;gap:1.5rem}.settings-section{border-top:1px solid #eee;padding-top:1.5rem}.settings-section:first-of-type{border-top:none;padding-top:0}.settings-section h3{margin:0 0 .5rem;color:#333}.settings-section p{text-align:left;margin:0 0 1rem;font-size:.9rem;color:#666;line-height:1.5}.setting-item{display:flex;flex-direction:column;gap:.5rem;margin-bottom:1.25rem}.setting-item label{font-weight:500;color:#444}.setting-item input,.setting-item select,.settings-section textarea{width:100%;padding:.75rem;font-size:1rem;border:1px solid #ccc;border-radius:6px;background-color:#f9f9f9;font-family:inherit}.setting-item input:focus,.setting-item select:focus,.settings-section textarea:focus{outline:2px solid #6a5acd;border-color:transparent}.modal-content .modal-actions{display:flex;justify-content:flex-end;gap:1rem;margin-top:1rem;border-top:1px solid #eee;padding-top:1.5rem}.modal-actions button{padding:.75rem 1.5rem;font-size:1rem;font-weight:700;border:none;border-radius:8px;cursor:pointer;transition:background-color .2s}.modal-actions button:first-of-type{background-color:#e8e8ee;color:#333}.modal-actions button:first-of-type:hover{background-color:#ddd}.modal-actions button:last-of-type{background-color:#6a5acd;color:#fff}.modal-actions button:last-of-type:hover{background-color:#584aae}.sentence-container{display:flex;flex-direction:column;gap:1.5rem;min-height:120px;justify-content:center}.target-sentence{line-height:1.7;font-size:2rem;font-weight:500;text-align:left}.native-sentence{line-height:1.7;font-size:1.2rem;color:var(--color-text-secondary)}.target-sentence .word{cursor:pointer;transition:filter .2s ease;padding:2px 0}.target-sentence .word:hover{filter:brightness(1.3)}.target-sentence .speak-button{display:inline-block;vertical-align:middle;margin-left:8px;background:none;border:none;font-size:1.8rem;cursor:pointer;color:var(--text-color-secondary);width:44px;height:44px;line-height:44px;text-align:center;padding:0;transition:transform .2s}.target-sentence .speak-button:hover{transform:scale(1.1)}@media (max-width: 767px){.target-sentence{font-size:1.5rem}.native-sentence{font-size:1rem}}.actions{display:flex;justify-content:center;flex-wrap:wrap;gap:1rem}.unscramble-container{display:flex;flex-direction:column;align-items:center;width:100%;max-width:800px;margin:0 auto;padding:1rem}.initial-state-container{text-align:center}.generate-button{padding:12px 25px;font-size:1.1rem;border-radius:8px;border:none;background-color:#6a5acd;color:#fff;cursor:pointer;transition:background-color .2s ease}.generate-button:hover{background-color:#5948b1}.status-message.error{color:#e53e3e}.sentence-counter{font-size:.9rem;color:#666;margin-bottom:1.5rem}.word-bank{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;padding:20px;min-height:80px;width:100%;background-color:#f0f2f5;border-radius:12px;border:2px dashed #d9d9d9;transition:border-color .3s ease,background-color .3s ease}.word-bank.incorrect-dropzone{border-color:#fecaca}.word-bank.correct-dropzone{border-color:#a7f3d0;background-color:#f0fdf4}.word-tile{padding:12px 20px;background-color:#fff;border:1px solid #ccc;border-radius:8px;font-size:1.2rem;cursor:grab;-webkit-user-select:none;user-select:none;box-shadow:0 2px 4px #0000000d;transition:background-color .2s ease,border-color .2s ease,transform .2s ease;touch-action:none}.word-tile.dragging{cursor:grabbing;box-shadow:0 5px 15px #0003;transform:scale(1.05)}.word-tile.incorrect{border-color:#e53e3e;background-color:#fff5f5;color:#c53030;animation:shake .5s}@keyframes shake{0%,to{transform:translate(0)}25%{transform:translate(-5px)}75%{transform:translate(5px)}}.feedback-message{font-weight:700;font-size:1.2rem;margin-top:1.5rem;padding:10px 20px;border-radius:8px}.feedback-message.correct{color:#2f855a;background-color:#c6f6d5}.actions-panel{margin-top:2rem;display:flex;gap:1.5rem}.action-button{background:none;border:none;color:#6a5acd;text-decoration:underline;cursor:pointer;font-size:.9rem;padding:0}.hint-box{margin-top:1rem;padding:15px;background-color:#fafafa;border-left:4px solid #6a5acd;color:#333;width:100%;text-align:center}.hint-label{font-weight:600;color:#555;margin-right:5px}.navigation{margin-top:2rem;display:flex;justify-content:space-between;width:100%}.navigation button{padding:10px 25px;border-radius:8px;border:1px solid #ccc;background-color:#fff;cursor:pointer;transition:background-color .2s ease}.navigation button:hover:not(:disabled){background-color:#f7f7f7}.navigation button:disabled{background-color:#f7f7f7;color:#aaa;cursor:not-allowed;border-color:#ddd}.comprehension-container{display:flex;flex-direction:column;gap:1.5rem;width:100%;max-width:800px;margin:0 auto}.passage-card,.question-card{background-color:var(--card-bg-color);border:1px solid var(--border-color);border-radius:8px;padding:1.5rem;box-shadow:0 2px 8px #0000001a}.passage-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1rem}.passage-header h3{margin:0;font-size:1.2rem;color:var(--text-color-secondary)}.speak-button{background:none;border:none;font-size:1.5rem;cursor:pointer;color:var(--text-color-secondary);transition:transform .2s ease}.speak-button:hover{transform:scale(1.1)}.passage-text{font-size:1.1rem;line-height:1.8;color:var(--text-color)}.passage-word{cursor:pointer;transition:background-color .2s;border-radius:3px;padding:0 2px}.passage-word:hover{background-color:var(--highlight-color)}.comprehension-question{font-size:1.25rem;margin-bottom:1.5rem;font-weight:600;color:var(--text-color)}.mcq-options{display:flex;flex-direction:column;gap:.75rem}.mcq-option{width:100%;padding:1rem;font-size:1rem;text-align:left;background-color:var(--card-bg-color);color:var(--text-color);border:2px solid var(--border-color);border-radius:8px;cursor:pointer;transition:border-color .2s,background-color .2s}.mcq-option:not(:disabled):hover{border-color:var(--primary-color);background-color:var(--hover-bg-color, rgba(0, 0, 0, .03))}.mcq-option:disabled{cursor:not-allowed}.mcq-option.correct{border-color:#28a745;background-color:#28a74526;color:var(--text-color);font-weight:700}.mcq-option.incorrect{border-color:#dc3545;background-color:#dc35451a;color:var(--text-color);opacity:.8}.mcq-option:disabled:not(.correct):not(.incorrect){opacity:.6;background-color:transparent}.feedback-and-navigation{display:flex;flex-direction:column;align-items:center;gap:1rem;margin-top:1rem}.correct-answer-feedback{background-color:var(--highlight-color);color:var(--text-color);padding:.75rem 1.25rem;border-radius:8px;font-weight:500;text-align:center;border:1px solid var(--border-color)}.feedback-and-navigation .continue-button,.feedback-and-navigation .generate-new-button{width:100%;max-width:400px;padding:1rem;font-size:1.1rem;font-weight:700;color:#000;background-color:var(--primary-color);border:none;border-radius:8px;cursor:pointer;transition:background-color .2s}.feedback-and-navigation .continue-button:hover,.feedback-and-navigation .generate-new-button:hover{background-color:var(--primary-color-dark)}.navigation{text-align:center;color:var(--text-color-secondary);margin-top:1rem}.write-a-response-container{display:flex;flex-direction:column;gap:1.5rem;width:100%;max-width:800px;margin:0 auto}.question-card-write{background-color:var(--card-bg-color);border:1px solid var(--border-color);border-radius:8px;padding:1.5rem}.question-header{display:flex;justify-content:space-between;align-items:flex-start;gap:1rem}.question-text{flex-grow:1;font-size:1.5rem;line-height:1.6;font-weight:600;margin:0;color:var(--text-color)}.question-word{cursor:pointer;transition:background-color .2s;border-radius:4px;padding:0 3px}.question-word:hover{background-color:var(--highlight-color)}.response-area{display:flex;flex-direction:column;gap:1rem}.response-input{width:100%;padding:1rem;font-family:inherit;font-size:1.1rem;border:1px solid var(--border-color);border-radius:8px;background-color:var(--card-bg-color);color:var(--text-color);resize:vertical;min-height:120px}.response-input:disabled{background-color:var(--bg-color);cursor:not-allowed}.submit-button{padding:.8rem 1.5rem;font-size:1.1rem;font-weight:700;color:#000;background-color:var(--primary-color);border:none;border-radius:8px;cursor:pointer;align-self:flex-end;transition:background-color .2s}.submit-button:hover:not(:disabled){background-color:var(--primary-color-dark)}.submit-button:disabled{opacity:.7;cursor:wait}.feedback-box{background-color:var(--highlight-color);border:1px solid var(--border-color);border-radius:8px;padding:1rem 1.5rem;animation:fadeIn .5s ease-in-out}.feedback-box h4{margin-top:0;margin-bottom:.5rem;color:var(--text-color)}.feedback-box p{margin-bottom:0;line-height:1.7;color:var(--text-color-secondary)}.navigation-write{display:flex;justify-content:flex-end;gap:1rem;margin-top:1rem}.nav-button{padding:.8rem 1.5rem;font-size:1rem;font-weight:500;border-radius:8px;cursor:pointer;transition:background-color .2s,color .2s}.nav-button.skip{background-color:transparent;color:var(--text-color-secondary);border:1px solid var(--border-color)}.nav-button.skip:hover{background-color:var(--highlight-color)}.nav-button.next,.nav-button.generate-new{background-color:var(--primary-color);color:#000;border:none;font-weight:700}.nav-button.next:hover,.nav-button.generate-new:hover{background-color:var(--primary-color-dark)}@keyframes fadeIn{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}