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(max-width:760px){.decks-grid{grid-template-columns:1fr}}.profile-card{background:var(--bg-primary);border:.5px solid var(--border);border-radius:var(--radius-lg);align-items:center;gap:16px;margin-bottom:1.5rem;padding:1.5rem;display:flex}.avatar{background:var(--purple-light);width:64px;height:64px;color:var(--purple-text);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;font-size:22px;font-weight:500;display:flex}.prof-name{font-size:18px;font-weight:500}.prof-email{color:var(--text-secondary);margin-top:2px;font-size:14px}.prof-since{color:var(--text-secondary);margin-top:6px;font-size:13px}.profile-stats{grid-template-columns:repeat(3,1fr);gap:12px;margin-bottom:1.5rem;display:grid}.btn-logout{border-radius:var(--radius-md);border:.5px solid var(--border-hover);width:100%;color:var(--danger);cursor:pointer;background:0 0;padding:10px;font-size:14px}.btn-logout:hover{background:var(--danger-light)}.qp-row{gap:6px;margin-bottom:1.5rem;display:flex}.qp-dot{background:var(--bg-secondary);border-radius:2px;flex:1;height:4px}.qp-dot.done{background:var(--purple)}.qp-dot.cur{background:#afa9ec}.quiz-q{margin-bottom:1.5rem;font-size:16px;font-weight:500;line-height:1.5}.quiz-opts{flex-direction:column;gap:10px;display:flex}.quiz-opt{border-radius:var(--radius-md);border:.5px solid var(--border);background:var(--bg-primary);text-align:left;padding:12px 16px;font-size:15px;transition:all .15s}.quiz-opt:hover:not(:disabled):not(.correct):not(.wrong):not(.selected){border-color:var(--border-hover);background:var(--bg-secondary)}.quiz-opt.selected{border-color:var(--purple);background:var(--purple-light)}.multi-hint{color:var(--text-secondary);margin:-.5rem 0 .75rem;font-size:13px;line-height:1.4}.quiz-opt.correct{border-color:var(--success);background:var(--success-light);color:#0f6e56}.quiz-opt.wrong{border-color:var(--danger);background:var(--danger-light);color:#a32d2d}.quiz-opt.picked{box-shadow:0 0 0 2px var(--purple);font-weight:500}.quiz-opt.picked.correct{box-shadow:0 0 0 2px var(--purple),inset 0 0 0 1px #0f6e5626}.quiz-opt.picked.wrong{box-shadow:0 0 0 2px var(--danger)}.quiz-score{text-align:center;background:var(--bg-secondary);border-radius:var(--radius-lg);padding:2rem}.score-val{font-size:48px;font-weight:500}.score-label{color:var(--text-secondary);margin-top:4px;font-size:16px}.score-pct{color:var(--text-secondary);margin-top:8px;font-size:13px}.btn-restart{border-radius:var(--radius-md);border:.5px solid var(--border-hover);background:0 0;margin-top:1.5rem;padding:10px 24px;font-size:14px}.btn-restart:hover{background:var(--bg-primary)}.study-header{justify-content:space-between;align-items:flex-start;gap:12px;margin-bottom:1.25rem;display:flex}.study-header-actions{flex-direction:column;flex-shrink:0;align-items:flex-end;gap:8px;display:flex}.btn-reset-progress{border-radius:var(--radius-md);border:.5px solid var(--border-hover);color:var(--text-secondary);background:0 0;padding:6px 12px;font-size:12px}.btn-reset-progress:hover:not(:disabled){background:var(--bg-secondary);color:var(--text-primary)}.btn-reset-progress:disabled{opacity:.5;cursor:default}.study-header-main{align-items:flex-start;gap:8px;min-width:0;display:flex}.study-title{font-size:16px;font-weight:500}.study-sub{color:var(--text-secondary);margin-top:2px;font-size:13px}.mode-badge{color:var(--purple-text);background:var(--purple-light);border-radius:999px;flex-shrink:0;padding:4px 10px;font-size:12px;font-weight:500}.study-header-main .btn-back{align-items:center;padding:2px 4px;line-height:1;text-decoration:none;display:inline-flex}.question-meta{color:var(--text-secondary);margin-bottom:.75rem;font-size:12px}.reveal-panel{border-radius:var(--radius-lg);background:var(--bg-secondary);border:.5px solid var(--border);margin-top:1.25rem;padding:14px}.reveal-title{margin-bottom:10px;font-size:14px;font-weight:500}.expl-block{border-top:.5px solid var(--border);padding:10px 0}.expl-block:first-of-type{border-top:none;padding-top:0}.expl-answer{margin-bottom:4px;font-size:14px;font-weight:500}.expl-block--correct .expl-answer{color:#0f6e56}.expl-text{color:var(--text-primary);font-size:13px;line-height:1.5}.study-actions{justify-content:space-between;align-items:center;gap:12px;margin-top:1.25rem;display:flex}.study-actions .btn-action--next{margin-left:auto}.btn-action{border-radius:var(--radius-md);background:var(--purple);color:#fff;border:none;justify-content:center;align-items:center;padding:10px 20px;font-size:14px;font-weight:500;text-decoration:none;display:inline-flex}.btn-action:hover{background:var(--purple-dark)}.btn-action--ghost{color:var(--text-primary);border:.5px solid var(--border-hover);background:0 0}.btn-action--ghost:hover{background:var(--bg-primary)}.quiz-score .btn-action--ghost{margin-left:8px}.quiz-score .score-pct{margin-bottom:1rem}.empty-panel{text-align:center;background:var(--bg-secondary);border-radius:var(--radius-lg);padding:1.5rem;font-size:14px}.btn-link{color:var(--purple-text);margin-top:12px;font-size:14px;display:inline-block}.quiz-list-toolbar{justify-content:space-between;align-items:center;gap:12px;margin-bottom:4px;display:flex}.quiz-select-all{margin-bottom:0;padding:4px 2px 8px}.btn-share{border-radius:var(--radius-md);background:var(--purple);color:#fff;cursor:pointer;border:none;flex-shrink:0;padding:6px 14px;font-size:13px;font-weight:500}.btn-share:hover{background:var(--purple-dark)}.pick-item--with-check{background:0 0;border:none;align-items:center;gap:10px;margin-block:.5rem;padding:0;display:flex}.pick-item--with-check:hover{background:0 0;border:none}.quiz-check{flex-shrink:0;padding:12px 0 12px 14px}.pick-item-link{border-radius:var(--radius-md);border:.5px solid var(--border);background:var(--bg-primary);color:inherit;flex:1;justify-content:space-between;align-items:center;padding:12px 14px;font-size:14px;text-decoration:none;display:flex}.pick-item-link:hover{border-color:var(--border-hover);background:var(--bg-secondary)}.share-form .form-group{margin-bottom:1.25rem}.modal-actions{justify-content:flex-end;gap:10px;display:flex}.btn-modal-cancel{border-radius:var(--radius-md);border:.5px solid var(--border-hover);color:var(--text-primary);cursor:pointer;background:0 0;padding:10px 16px;font-size:14px}.btn-modal-cancel:hover:not(:disabled){background:var(--bg-secondary)}.btn-modal-cancel:disabled{opacity:.5;cursor:default}