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#4f2d1c47;box-sizing:border-box;color:#20130f;display:grid;gap:.75rem;max-height:min(86vh,620px);max-width:440px;overflow:auto;padding:1.25rem;width:100%}.linguide-adapt-dialog h2{color:#20130f;font-family:var(--app-font-heading, "Inter", system-ui, sans-serif);font-size:1.45rem;letter-spacing:0;line-height:1.08;margin:0}.linguide-adapt-dialog p{color:#674a3d;line-height:1.45;margin:0}.linguide-adapt-steps{display:grid;gap:.55rem}.linguide-adapt-steps article{background:#ffffff94;border:1px solid rgba(105,72,48,.13);border-radius:12px;display:grid;gap:.25rem;padding:.72rem .8rem}.linguide-adapt-steps b{color:#20130f}.linguide-adapt-close{background:linear-gradient(135deg,#3a261f,#8d5130);border:1px solid rgba(255,255,255,.2);border-radius:999px;color:#fff8ef;cursor:pointer;font-weight:900;justify-self:stretch;min-height:44px;padding:.65rem 1rem}.dashboard-home.linguide-today .dashboard-cta-btn{animation:linguideCtaGlowBreathe 2.8s ease-in-out infinite;background:linear-gradient(135deg,#3a261f,#8d5130);border-color:#a05c3257;box-shadow:0 12px 30px #7b4a263d,0 0 34px #c0813f33,inset 0 0 12px #fff8ec14;width:min(340px,calc(100vw - 4rem))}.dashboard-home.linguide-today .cta-pulse-ring{animation:linguideCtaPulse 2s ease-out infinite;border-color:#c0813f85;box-shadow:0 0 14px #c0813f57,inset 0 0 6px #8d51302e}.dashboard-home.linguide-today .cta-pulse-ring-2{animation-delay:.65s}.dashboard-home.linguide-today .dashboard-cta-btn:active{box-shadow:0 0 14px #c0813f40,0 4px 12px #7b4a2629}@keyframes linguideCtaGlowBreathe{0%,to{box-shadow:0 12px 30px #7b4a2638,0 0 28px #c0813f2e,inset 0 0 12px #fff8ec14}50%{box-shadow:0 14px 36px #7b4a2647,0 0 46px #c0813f4d,0 8px 24px #a05c3233,inset 0 0 16px #fff8ec1f}}@keyframes linguideCtaPulse{0%{border-color:#c0813f85;box-shadow:0 0 14px #c0813f57;height:100%;opacity:.78;width:100%}40%{opacity:.38}to{border-color:#c0813f00;box-shadow:0 0 26px #a05c3200;height:210%;opacity:0;width:128%}}[data-skin=midnight-slate] .linguide-today .next-card-countdown,[data-skin=midnight-slate] .linguide-today .next-card-countdown.none,[data-skin=midnight-slate] .linguide-today .next-card-countdown.loading,[data-skin=midnight-slate] .linguide-today .next-card-countdown.active{background:#ffffff9e!important;border-color:#a05c3233!important;color:#674a3d!important}[data-skin=midnight-slate] .linguide-today .next-card-countdown .countdown-label{color:#6d4d3f!important}[data-skin=midnight-slate] .linguide-today .next-card-countdown .countdown-time{color:#5b4636!important}.linguide-today .dashboard-firstwords-failed{color:#9a3412}.linguide-today .first-words-progress-label{color:#674a3d}.linguide-today .first-words-progress-track{background:#a05c3229;border-color:#a05c3247}.linguide-today .first-words-progress-fill{background:linear-gradient(90deg,#a05c32,#c0813f);box-shadow:0 0 12px 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56%,#2d1d19);border:1px solid rgba(255,255,255,.18);box-shadow:0 18px 42px #4222153d;border-radius:18px;padding:1.15rem 1rem 1.3rem;display:flex;flex-direction:column;align-items:center;gap:.5rem;width:100%;box-sizing:border-box}[data-skin=midnight-slate] .study-active .card-main-line .mc-quick-check{align-self:flex-end;background:#efe7ff;color:#6b3fa2!important;-webkit-text-fill-color:#6b3fa2!important;border-radius:999px;font-size:.72rem;font-weight:900;letter-spacing:.02em;padding:.18rem .6rem}[data-skin=midnight-slate] .study-active .card-main-line .mc-card-prompt{margin:.1rem 0 0;font-size:1rem;color:#ffead3!important;-webkit-text-fill-color:#ffead3!important}[data-skin=midnight-slate] .study-active .card-main-line,[data-skin=midnight-slate] .study-active .card-main-line *{color:#fff7ed}[data-skin=midnight-slate] .study-active .card-main-line .card-text,[data-skin=midnight-slate] .study-active .card-main-line .thai-word-text,[data-skin=midnight-slate] .study-active .card-main-line 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.example-pronunciation,[data-skin=midnight-slate] .study-active .example-english,[data-skin=midnight-slate] .study-active .example-literal,[data-skin=midnight-slate] .study-active .translation-label{color:#674a3d;-webkit-text-fill-color:#674a3d}[data-skin=midnight-slate] .study-active .tone-details summary,[data-skin=midnight-slate] .study-active .tone-label,[data-skin=midnight-slate] .study-active .tone-hint{color:#674a3d}[data-skin=midnight-slate] .study-active .stuck-word-aid-body{color:#20130f;-webkit-text-fill-color:#20130f}[data-skin=midnight-slate] .study-active .stuck-word-aid-body::selection,[data-skin=midnight-slate] .study-active .stuck-word-aid-body *::selection{background:#f3c982;color:#20130f;-webkit-text-fill-color:#20130f}[data-skin=midnight-slate] .study-active .review-card .no-cards,[data-skin=midnight-slate] .study-active .review-card .no-cards h2{color:#20130f}[data-skin=midnight-slate] .study-active .review-card .no-cards p{color:#674a3d}[data-skin=midnight-slate] 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2.5rem;font-weight:700}.action-btn.small{font-size:.9rem;padding:.5rem 1rem;font-weight:500}.auto-refresh-info{text-align:center;margin:.5rem 0}.auto-refresh-info small{color:#64748b;font-style:italic;background:#f1f5f9;padding:.25rem .75rem;border-radius:12px;border:1px solid #e2e8f0}.welcome-message{text-align:center;background:#f8fafc;border:1px solid #e2e8f0;border-radius:12px;padding:2rem;color:#475569}.welcome-message h3{color:#334155;margin-top:0}.header-nav,.header-actions{display:flex;gap:1rem;align-items:center}.nav-btn{background:#fff3;border:1px solid rgba(255,255,255,.3);color:#fff;padding:.5rem 1rem;border-radius:6px;cursor:pointer;transition:all .2s ease;font-size:.9rem;font-weight:500;display:inline-flex;align-items:center;justify-content:center;gap:.4rem}.click-to-speak-hint{background:#e3f2fd;border:1px solid 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var(--app-border)}.settings-subsection:last-child{border-bottom:none;margin-bottom:0;padding-bottom:0}.settings-advanced-sub>summary{list-style:none;cursor:pointer;font-weight:600;color:var(--app-text);margin-bottom:.75rem}.settings-advanced-sub>summary::-webkit-details-marker{display:none}.settings-advanced-sub>summary:after{content:"+";float:right;color:var(--app-muted);font-weight:600}.settings-advanced-sub[open]>summary:after{content:"-"}.settings-tech{background:var(--app-surface-alt);border:1px solid var(--app-border);border-radius:10px;padding:.75rem 1rem}.settings-tech-row{display:flex;justify-content:space-between;color:var(--app-muted);font-size:.9rem}.settings-danger{border:1px solid #fecaca;background:#fff1f2}.settings-danger h2{color:#b91c1c;border-bottom-color:#fecaca}.settings-advanced-toggle{border:1px solid var(--app-border);border-radius:10px;padding:.75rem 1rem;background:var(--app-surface-alt);margin-bottom:1.5rem}.settings-advanced-toggle summary{cursor:pointer;font-weight:600;color:var(--app-text);list-style:none}.settings-advanced-toggle summary::-webkit-details-marker{display:none}.settings-advanced-toggle summary:after{content:"+";float:right;color:var(--app-muted)}.settings-advanced-toggle[open] summary:after{content:"-"}.settings-advanced-body{margin-top:1rem}.settings-simple-header{font-size:.95rem;font-weight:700;color:var(--app-text);margin-bottom:.75rem}.retention-explanation{margin:1rem 0 0;border:1px solid var(--app-border);border-radius:10px;padding:.75rem 1rem;background:var(--app-surface-alt)}.retention-explanation summary{cursor:pointer;font-weight:600;color:var(--app-text);list-style:none}.retention-explanation summary::-webkit-details-marker{display:none}.retention-explanation summary:after{content:"+";float:right;color:var(--app-muted)}.retention-explanation[open] summary:after{content:"-"}.retention-explanation ul{margin:.75rem 0 0;padding-inline-start:1.1rem;color:var(--app-muted);font-size:.9rem}.settings-closure{text-align:center;box-shadow:none;border:1px dashed var(--app-border);background:var(--app-surface-alt)}.settings-closure-text{font-size:1rem;color:var(--app-text);margin-bottom:1rem}[data-skin=midnight-slate]{color-scheme:dark}[data-skin=midnight-slate] .settings-nav-btn{background:#0f172aa6;color:var(--app-text);border-color:var(--app-border)}[data-skin=midnight-slate] .settings-nav-btn.active{background:#3b82f633;border-color:#60a5fa;color:#e0f2fe}[data-skin=midnight-slate] .settings-back-btn{color:var(--app-text);background:#0f172a99;border-color:var(--app-border)}[data-skin=midnight-slate] .settings-section:not(.settings-danger):not(.settings-closure){background:var(--app-surface)!important;border-color:var(--app-border)!important;color:var(--app-text)!important}[data-skin=midnight-slate] .settings-form{background:var(--app-surface)!important;border-color:var(--app-border)!important;color:var(--app-text)!important}[data-skin=midnight-slate] .settings-section h2,[data-skin=midnight-slate] .settings-section h3,[data-skin=midnight-slate] .settings-section h4{color:var(--app-text)!important}[data-skin=midnight-slate] .settings-description{background:var(--app-surface-alt)!important;border-color:var(--app-border)!important;color:var(--app-muted)!important}[data-skin=midnight-slate] .settings-muted{color:var(--app-muted)!important}[data-skin=midnight-slate] .settings-section p,[data-skin=midnight-slate] .settings-section label,[data-skin=midnight-slate] .settings-section summary,[data-skin=midnight-slate] .settings-section li{color:var(--app-text)!important}[data-skin=midnight-slate] .settings-export-import{background:var(--app-surface)!important;border-color:var(--app-border)!important;color:var(--app-text)!important}[data-skin=midnight-slate] .settings-export-import h2{color:var(--app-text)!important}[data-skin=midnight-slate] .settings-export-import .settings-description{color:var(--app-muted)!important}[data-skin=midnight-slate] .preview-modal{background:var(--app-surface)!important;color:var(--app-text)!important;border:1px solid var(--app-border)}[data-skin=midnight-slate] .modal-header,[data-skin=midnight-slate] .modal-footer{border-color:var(--app-border)!important}[data-skin=midnight-slate] .modal-header h3,[data-skin=midnight-slate] .settings-list h4{color:var(--app-text)!important}[data-skin=midnight-slate] .setting-item,[data-skin=midnight-slate] .import-info{background:var(--app-surface-alt)!important;border-color:var(--app-border)!important}[data-skin=midnight-slate] .setting-label,[data-skin=midnight-slate] .info-item,[data-skin=midnight-slate] .info-item strong{color:var(--app-text)!important}[data-skin=midnight-slate] .setting-value{background:var(--app-surface)!important;border-color:var(--app-border)!important;color:var(--app-text)!important}[data-skin=midnight-slate] .import-modes{background:#3b82f626!important;border-color:#60a5fa73!important}[data-skin=midnight-slate] .import-modes h4,[data-skin=midnight-slate] .mode-option,[data-skin=midnight-slate] .mode-option strong{color:#e0f2fe!important}[data-skin=midnight-slate] .security-warning{background:#facc151f!important;border-color:#facc1580!important}[data-skin=midnight-slate] .warning-content,[data-skin=midnight-slate] .warning-content strong{color:#fde68a!important}[data-skin=midnight-slate] .status-message.info{background:#3b82f62e!important;border-color:#60a5fa80!important;color:#e0f2fe!important}[data-skin=midnight-slate] .status-message.error{background:#ef44442e!important;border-color:#f871718c!important;color:#fecaca!important}[data-skin=midnight-slate] .status-message.success{background:#10b9812e!important;border-color:#6ee7b780!important;color:#d1fae5!important}[data-skin=midnight-slate] .settings-danger{background:#1f1417!important;border-color:#7f1d1d!important}[data-skin=midnight-slate] .settings-danger h2{color:#fecaca!important;border-bottom-color:#f8717173!important}[data-skin=midnight-slate] .settings-danger .settings-muted{color:#fca5a5!important}[data-skin=midnight-slate] .llm-settings,[data-skin=midnight-slate] .azure-tts-settings,[data-skin=midnight-slate] .azure-aoai-settings,[data-skin=midnight-slate] .contact-section-card,[data-skin=midnight-slate] .spaced-repetition-settings{background:var(--app-surface)!important;border-color:var(--app-border)!important;color:var(--app-text)!important}[data-skin=midnight-slate] .llm-settings h3,[data-skin=midnight-slate] .llm-settings h4,[data-skin=midnight-slate] .llm-settings h5,[data-skin=midnight-slate] .azure-tts-settings h4,[data-skin=midnight-slate] .azure-aoai-settings h4,[data-skin=midnight-slate] .contact-section-title{color:var(--app-text)!important}[data-skin=midnight-slate] .llm-settings .settings-description,[data-skin=midnight-slate] .llm-settings .help-text,[data-skin=midnight-slate] .llm-settings .privacy-note,[data-skin=midnight-slate] .llm-settings .section-description,[data-skin=midnight-slate] .llm-settings label,[data-skin=midnight-slate] .contact-section-description,[data-skin=midnight-slate] .contact-section-email-text,[data-skin=midnight-slate] .contact-section-link{color:var(--app-muted)!important}[data-skin=midnight-slate] .llm-settings .provider-info,[data-skin=midnight-slate] .llm-settings .privacy-note,[data-skin=midnight-slate] .llm-settings .settings-description,[data-skin=midnight-slate] .azure-config-form,[data-skin=midnight-slate] .voice-info,[data-skin=midnight-slate] .quick-start,[data-skin=midnight-slate] .spaced-repetition-settings .settings-section,[data-skin=midnight-slate] .spaced-repetition-settings .retention-explanation,[data-skin=midnight-slate] .spaced-repetition-settings .data-management-warning,[data-skin=midnight-slate] .spaced-repetition-settings .auto-backup-section,[data-skin=midnight-slate] .spaced-repetition-settings .auto-backup-description{background:var(--app-surface-alt)!important;border-color:var(--app-border)!important;color:var(--app-text)!important}[data-skin=midnight-slate] .llm-settings .form-input,[data-skin=midnight-slate] .llm-settings .form-select,[data-skin=midnight-slate] .llm-settings .api-key-input{background:var(--app-surface)!important;color:var(--app-text)!important;border-color:var(--app-border)!important}[data-skin=midnight-slate] .llm-settings .provider-info summary,[data-skin=midnight-slate] .spaced-repetition-settings summary,[data-skin=midnight-slate] .spaced-repetition-settings .retention-explanation h4,[data-skin=midnight-slate] .spaced-repetition-settings .retention-explanation strong,[data-skin=midnight-slate] .spaced-repetition-settings .settings-section h4{color:var(--app-text)!important}[data-skin=midnight-slate] .spaced-repetition-settings .section-description,[data-skin=midnight-slate] .spaced-repetition-settings .settings-description,[data-skin=midnight-slate] .spaced-repetition-settings .status-label,[data-skin=midnight-slate] .spaced-repetition-settings .data-management-description{color:var(--app-muted)!important}[data-skin=midnight-slate] .spaced-repetition-settings .status-value{color:#86efac!important}[data-skin=midnight-slate] .spaced-repetition-settings h3{color:var(--app-text)!important}[data-skin=midnight-slate] .contact-section-button{background:var(--app-surface)!important;color:#93c5fd!important;border-color:#334155!important}[data-skin=midnight-slate] .contact-section-button:hover{background:#3b82f626!important}[data-skin=midnight-slate] .azure-tts-settings .config-select,[data-skin=midnight-slate] .azure-tts-settings .config-input{background:var(--app-surface)!important;color:var(--app-text)!important;border-color:var(--app-border)!important}[data-skin=midnight-slate] .azure-tts-settings .status-badge.configured,[data-skin=midnight-slate] .azure-aoai-settings .status-badge.configured{background:#10b98133!important;color:#d1fae5!important}[data-skin=midnight-slate] .azure-tts-settings .status-badge.not-configured{background:#f59e0b33!important;color:#fde68a!important}[data-skin=midnight-slate] .azure-tts-settings .voices-list ul{background:var(--app-surface)!important;border-color:var(--app-border)!important}[data-skin=midnight-slate] .azure-tts-settings .voice-details{color:var(--app-muted)!important}[data-skin=midnight-slate] .azure-aoai-settings .server-note,[data-skin=midnight-slate] .azure-tts-settings .server-note{background:#3b82f626!important;border-color:#3b82f666!important;color:#dbeafe!important}[data-skin=midnight-slate] .home-stats .stat-card,[data-skin=midnight-slate] .stat-card{background:var(--app-surface);border-color:var(--app-border);box-shadow:0 10px 24px #0f172a59}[data-skin=midnight-slate] .home-stats .stat-number,[data-skin=midnight-slate] .stat-number{color:#e2e8f0}[data-skin=midnight-slate] .stat-label,[data-skin=midnight-slate] .stat-meta,[data-skin=midnight-slate] .weekly-total{color:var(--app-muted)}[data-skin=midnight-slate] .stat-progress{background:#94a3b833}[data-skin=midnight-slate] .home-secondary-cta{background:var(--app-surface);color:#93c5fd;border-color:#334155}[data-skin=midnight-slate] .home-actions .action-btn.primary{background:linear-gradient(135deg,#3b82f6,#6366f1);color:#f8fafc;border:1px solid rgba(59,130,246,.6);box-shadow:0 16px 24px #2563eb59}[data-skin=midnight-slate] .home-actions .action-btn.primary:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 20px 28px #3b82f673}[data-skin=midnight-slate] .home-actions .action-btn.primary:disabled{background:#1f2937;color:#64748b;border-color:#1f2937;box-shadow:none}[data-skin=midnight-slate] .link-btn{color:#93c5fd}[data-skin=midnight-slate] .link-btn:hover{color:#bfdbfe}[data-skin=midnight-slate] .review-card{background:#111827d9;border:1px solid rgba(148,163,184,.1);color:var(--app-text);box-shadow:0 8px 32px #0006;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}[data-skin=midnight-slate] .review-header{border-bottom-color:#94a3b81a}[data-skin=midnight-slate] .review-header h2,[data-skin=midnight-slate] .review-title-section,[data-skin=midnight-slate] .review-stats,[data-skin=midnight-slate] .card-info,[data-skin=midnight-slate] .no-cards,[data-skin=midnight-slate] .loading,[data-skin=midnight-slate] .no-cards h2{color:var(--app-text)}[data-skin=midnight-slate] .no-cards{color:#94a3b8}[data-skin=midnight-slate] .no-cards h2{color:#f1f5f9;font-size:1.8rem}[data-skin=midnight-slate] .due-count{background:#6366f126;color:#a5b4fc}[data-skin=midnight-slate] .lapse-count{background:#ef444426;color:#fca5a5}[data-skin=midnight-slate] .review-actions .explore-toggle,[data-skin=midnight-slate] .explore-toggle{color:#94a3b8}[data-skin=midnight-slate] .explore-toggle:hover{color:#cbd5f5}[data-skin=midnight-slate] .explore-actions .ghost-link,[data-skin=midnight-slate] .explore-actions .explain-button.ghost,[data-skin=midnight-slate] .explore-actions .example-button.ghost{color:#818cf8}[data-skin=midnight-slate] .explore-actions .ghost-link:hover,[data-skin=midnight-slate] .explore-actions .explain-button.ghost:hover,[data-skin=midnight-slate] .explore-actions .example-button.ghost:hover{color:#a5b4fc}[data-skin=midnight-slate] .tone-details{background:var(--app-surface-alt);border-color:var(--app-border)}[data-skin=midnight-slate] .tone-details summary{color:var(--app-muted)}[data-skin=midnight-slate] .card-front:after{background:linear-gradient(90deg,transparent,rgba(99,102,241,.2),transparent)}[data-skin=midnight-slate] .reveal-btn{background:var(--teacher-accent-strong);color:#fff8ef;border:none;box-shadow:0 4px 16px #a05c3247}[data-skin=midnight-slate] .reveal-btn:hover:not(:disabled){box-shadow:0 6px 24px #a05c325c;transform:translateY(-2px)}[data-skin=midnight-slate] .reveal-btn.secondary{background:#ffffff0f;color:#cbd5f5;border:1px solid rgba(148,163,184,.2);box-shadow:none}[data-skin=midnight-slate] .reveal-btn.secondary:hover:not(:disabled){background:#ffffff1a;border-color:#94a3b84d;box-shadow:none;transform:translateY(-1px)}[data-skin=midnight-slate] .reveal-btn.demoted{background:var(--app-surface-alt);color:var(--app-muted)}[data-skin=midnight-slate] .already-known-btn:disabled{background:var(--app-surface-alt);color:var(--app-muted)}[data-skin=midnight-slate] .no-cards,[data-skin=midnight-slate] .loading,[data-skin=midnight-slate] .card-info{color:var(--app-muted)}[data-skin=midnight-slate] .local-badge{background:#22c55e33;color:#86efac}[data-skin=midnight-slate] .answer-text{background:#22c55e14;border:2px solid rgba(34,197,94,.3);color:#4ade80;box-shadow:0 0 20px #22c55e14}[data-skin=midnight-slate] .answer-text.sentence{background:#22c55e0f;border-color:#22c55e33;color:#86efac}[data-skin=midnight-slate] .again-btn{background:transparent;border:2px solid rgba(239,68,68,.5);color:#f87171;box-shadow:0 0 16px #ef44441a}[data-skin=midnight-slate] .again-btn:hover:not(:disabled){background:#ef444414;border-color:#ef4444b3;box-shadow:0 0 24px #ef444426}[data-skin=midnight-slate] .good-btn{background:linear-gradient(135deg,#22c55e,#16a34a);border:none;color:#fff;box-shadow:0 4px 20px #22c55e4d}[data-skin=midnight-slate] .good-btn:hover:not(:disabled){box-shadow:0 6px 28px #22c55e66;transform:translateY(-2px)}[data-skin=midnight-slate] .again-btn:disabled,[data-skin=midnight-slate] .good-btn:disabled{background:#ffffff0a;color:#475569;border-color:#94a3b81a;box-shadow:none}[data-skin=midnight-slate] .grade-actions.first-presentation .continue-btn{background:var(--teacher-accent-strong);box-shadow:0 4px 20px #a05c3247;color:#fff8ef;border:none}[data-skin=midnight-slate] .grade-actions.first-presentation .continue-btn:hover:not(:disabled){box-shadow:0 6px 28px #a05c325c;transform:translateY(-2px)}[data-skin=midnight-slate] .grade-actions.first-presentation .continue-btn:disabled{background:linear-gradient(135deg,#2f211b80,#8d513080);color:#fff8ef99;box-shadow:none;border:none}[data-skin=midnight-slate] .grade-actions.first-presentation .already-know-btn{background:transparent;border:none;color:#64748b;font-size:.85rem;font-weight:500;opacity:.7}[data-skin=midnight-slate] .grade-actions.first-presentation .already-know-btn:hover:not(:disabled){background:#ffffff0f;border-color:#94a3b859;color:#cbd5e1}[data-skin=midnight-slate] .grade-honesty-hint{color:#64748b}[data-skin=midnight-slate] .explore-panel{background:#ffffff08;border-color:#94a3b81a}[data-skin=midnight-slate] .progress-badge.compact.pending.active{background:#6366f11f;color:#a5b4fc}[data-skin=midnight-slate] .card-state-chip.state-new{background:linear-gradient(135deg,#ef444433,#ef44441f);color:#f87171;border-color:#ef444440}[data-skin=midnight-slate] .card-state-chip.state-learning{background:linear-gradient(135deg,#facc1526,#eab3081a);color:#fbbf24;border-color:#facc1540}[data-skin=midnight-slate] .card-state-chip.state-review{background:linear-gradient(135deg,#22c55e26,#22c55e1a);color:#4ade80;border-color:#22c55e40}[data-skin=midnight-slate] .quality-badge{background:#3b82f633;color:#bfdbfe}.explain-button{display:inline-flex;align-items:center;gap:.5rem;padding:.5rem 1rem;background:var(--teacher-accent-strong);color:#fff;border:none;border-radius:6px;font-size:.9rem;font-weight:500;cursor:pointer;transition:all .2s ease;min-height:38px;box-shadow:0 4px 8px #a05c324d,0 2px 4px #0000001a,inset 0 1px #fff3;border:1px solid rgba(255,255,255,.1)}.explain-button:hover:not(:disabled){transform:translateY(-1px);box-shadow:0 6px 12px #a05c3266,0 3px 6px #00000026,inset 0 1px #ffffff4d;background:linear-gradient(135deg,#5a6fd8,#6a4190)}.sh-overlay{position:fixed;inset:0;background:#0b1120;z-index:1000;display:flex;flex-direction:column}.sh-container{display:flex;flex-direction:column;height:100%;max-width:480px;margin:0 auto;width:100%}.sh-header{display:flex;align-items:center;padding:1rem 1.25rem;gap:1rem}.sh-back{background:none;border:none;color:#f1f5f9;font-size:1.5rem;cursor:pointer;padding:.25rem .5rem;line-height:1;border-radius:8px;transition:background .2s}.sh-back:hover{background:#f1f5f91a}.sh-title{margin:0;font-size:1.25rem;font-weight:700;color:#f1f5f9;flex:1;text-align:center;padding-inline-end:2rem}.sh-scroll{flex:1;overflow-y:auto;padding:0 1rem 2rem;-webkit-overflow-scrolling:touch}.sh-empty{text-align:center;color:#94a3b8;padding:4rem 1rem;font-size:1rem}.sh-empty .sh-muted{color:#64748b;font-size:.875rem;margin-top:.5rem}.sh-week-card{position:relative;background:#162137b3;backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid rgba(148,163,184,.1);border-radius:18px;padding:1.25rem;margin-bottom:.75rem;overflow:hidden}.sh-week-card:before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,#3b82f6,#8b5cf6,#06b6d4);border-radius:18px 18px 0 0}.sh-week-summary{color:#f1f5f9;font-size:1rem;font-weight:600;margin-bottom:1rem}.sh-streak{display:flex;justify-content:space-between;align-items:flex-end;position:relative;padding-top:1.25rem}.sh-streak-day{display:flex;flex-direction:column;align-items:center;gap:.35rem;position:relative;flex:1}.sh-streak-indicators{display:flex;flex-direction:column;align-items:center;height:1.5rem;justify-content:flex-end}.sh-streak-check{font-size:.65rem;color:#4ade80}.sh-streak-fire{font-size:.75rem}.sh-streak-dot{width:14px;height:14px;border-radius:50%;background:#94a3b826;border:2px solid rgba(148,163,184,.2);position:relative;z-index:1;transition:all .3s ease}.sh-streak-dot.sh-streak-active{background:linear-gradient(135deg,#3b82f6,#8b5cf6);border-color:transparent;box-shadow:0 0 10px #3b82f673}.sh-streak-dot.sh-streak-future{opacity:.25}.sh-streak-line{position:absolute;top:calc(3.1rem + 5px);left:50%;width:100%;height:2px;background:#94a3b81a;z-index:0}.sh-streak-line.sh-streak-line-active{background:linear-gradient(90deg,#3b82f6,#8b5cf6);opacity:.5}.sh-streak-label{font-size:.7rem;color:#64748b;font-weight:500}.sh-session-card{background:#162137a6;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid rgba(148,163,184,.08);border-radius:16px;padding:1rem 1.25rem;margin-bottom:.625rem;transition:transform .15s ease,border-color .15s ease}.sh-session-card:active{transform:scale(.985)}.sh-session-date{color:#f1f5f9;font-weight:600;font-size:.95rem;margin-bottom:.5rem}.sh-session-stats{display:grid;grid-template-columns:1fr 1fr;gap:.25rem 1rem}.sh-stat{display:flex;align-items:center;gap:.4rem;color:#94a3b8;font-size:.85rem}.sh-stat-icon{font-size:.8rem;width:1.1rem;text-align:center}.explain-button:active:not(:disabled){transform:translateY(2px);box-shadow:inset 0 3px 8px #0000004d,inset 0 1px 4px #0003,0 1px 2px #a05c3233;background:linear-gradient(135deg,#4a5cb8,#5a356e);border:1px solid rgba(0,0,0,.1)}.explain-button:disabled{opacity:.6;cursor:not-allowed;transform:none;box-shadow:0 1px 2px #0000001a}.explain-button.loading{pointer-events:none}.explain-button.compact{padding:.4rem .8rem;font-size:.8rem;min-height:32px}.explain-button.large{padding:.75rem 1.5rem;font-size:1rem;min-height:44px}.feedback-modal{width:min(680px,100%);overflow:hidden}.feedback-form{display:flex;flex-direction:column;gap:.75rem}.feedback-actions{align-items:center}.feedback-submit-btn{background:linear-gradient(135deg,#5f7bff,#4f46e5);color:#f8fafc;box-shadow:0 14px 28px #4c57e659}.feedback-submit-btn:hover:not(:disabled){box-shadow:0 18px 32px #4c57e673}.feedback-cancel-btn{background:transparent;border:1px solid rgba(148,163,184,.45);color:#94a3b8;padding:.6rem 1.2rem;border-radius:10px;font-weight:600;cursor:pointer}.feedback-cancel-btn:hover:not(:disabled){color:#e2e8f0;border-color:#94a3b8cc;background:#94a3b81f}.feedback-label{font-weight:600;color:#1f2937}.feedback-input{width:100%;border-radius:10px;border:1px solid #e2e8f0;background:#f8fafc;padding:.75rem .9rem;font-size:.95rem;color:#1f2937;transition:border-color .2s ease,box-shadow .2s ease}.feedback-input:focus{outline:none;border-color:#7c74f4;box-shadow:0 0 0 3px #7c74f433}.feedback-textarea{min-height:140px;resize:vertical}.feedback-select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,#64748b 50%),linear-gradient(135deg,#64748b 50%,transparent 50%);background-position:calc(100% - 20px) calc(50% - 3px),calc(100% - 14px) calc(50% - 3px);background-size:6px 6px,6px 6px;background-repeat:no-repeat;padding-inline-end:2.5rem}.feedback-status{padding:.6rem 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.example-button{flex:1;min-height:40px;font-size:.85rem;padding:.5rem .75rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.action-buttons-section .example-button-container .examples-container{display:none!important}.action-buttons-section .example-button-container{margin:0}.explore-actions .example-button-container .examples-container{display:none}@media(max-width:768px){.buttons-horizontal-layout{flex-direction:column;gap:1rem;align-items:stretch}.score-buttons-section,.action-buttons-section{max-width:100%;width:100%}.action-buttons-row{justify-content:center}.action-buttons-row .explain-button,.action-buttons-row .speak-assess-toggle-btn,.action-buttons-row .example-button{min-width:80px;font-size:.8rem}}[data-skin=midnight-slate] .review-card{background:#0f172aa6;border:1px solid rgba(99,102,241,.12);border-radius:20px;padding:1.25rem;box-shadow:0 8px 32px #00000073,0 0 0 1px #94a3b80f,inset 0 1px 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.romanization-inline{color:#64748b;font-size:.95rem;margin-top:.3rem}[data-skin=midnight-slate] .card-main-line .pronunciation-text-inline{color:#818cf8;opacity:1}[data-skin=midnight-slate] .multiple-choice-panel{background:#0f172a66;border:1px solid rgba(99,102,241,.1);border-radius:18px;padding:1rem;backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px)}[data-skin=midnight-slate] .multiple-choice-header{color:#64748b;font-size:.8rem;font-weight:500;letter-spacing:.03em;margin-bottom:.25rem}[data-skin=midnight-slate] .choice-option{background:#1e293b8c;border:1.5px solid rgba(148,163,184,.1);border-radius:14px;padding:.9rem 1.1rem;color:#e2e8f0;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);transition:all .2s ease;box-shadow:0 2px 8px #00000026}@media(hover:hover){[data-skin=midnight-slate] .choice-option:hover:not(:disabled):not(.correct):not(.incorrect){background:#6366f11a;border-color:#818cf866;box-shadow:0 0 20px #6366f126,0 4px 12px 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.again-btn{background:#ffffff8c;border:1.5px solid rgba(160,92,50,.35);color:#8d5130;border-radius:14px;box-shadow:none;font-weight:700;font-size:1.05rem;padding:1rem;letter-spacing:.02em}[data-skin=midnight-slate] .again-btn:hover:not(:disabled){background:#a05c321a;border-color:#a05c3280;box-shadow:0 2px 10px #a05c321f;transform:translateY(-1px)}[data-skin=midnight-slate] .good-btn{background:var(--teacher-accent-strong);border:none;color:#fff8ef;border-radius:14px;box-shadow:0 4px 16px #a05c3247,0 0 8px #a05c3224;font-weight:700;font-size:1.05rem;padding:1rem;letter-spacing:.02em}[data-skin=midnight-slate] .good-btn:hover:not(:disabled){box-shadow:0 6px 24px #a05c3259,0 0 12px #a05c322e;transform:translateY(-2px)}[data-skin=midnight-slate] .grade-actions.first-presentation .continue-btn{background:var(--teacher-accent-strong);border:none;color:#fff8ef;border-radius:14px;box-shadow:0 4px 16px #a05c3247,0 0 8px 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