.header{display:flex;align-items:center;justify-content:space-between;padding:8px 16px;min-height:44px;flex-shrink:0}.header-title{font-size:17px;font-weight:600}.header-btn{font-size:15px;color:var(--color-primary);padding:4px 8px}.session-progress{height:3px;background:var(--color-border);flex-shrink:0}.session-progress-fill{height:100%;background:linear-gradient(90deg,var(--color-primary),var(--color-primary-dark));border-radius:0 2px 2px 0;transition:width .4s ease;min-width:0;box-shadow:0 0 6px rgba(108,142,239,.4)}.counter{text-align:center;padding:4px 16px;font-size:14px;color:var(--color-text-secondary);flex-shrink:0}.counter-current{font-weight:600;color:var(--color-text)}.card-container{flex:1;display:flex;align-items:stretch;justify-content:center;padding:8px 16px;overflow:hidden;min-height:0;contain:layout style paint}.card{width:100%;max-width:400px;background:var(--color-card-bg);border-radius:var(--radius);box-shadow:var(--shadow-lg);display:flex;flex-direction:column;align-items:center;justify-content:center;padding:24px 20px;cursor:pointer;position:relative;transition:transform var(--transition),opacity var(--transition);-webkit-user-select:none;user-select:none}.card-phrase{font-size:28px;font-weight:600;text-align:center;line-height:1.4;word-break:keep-all}.card-divider{width:40px;height:2px;background:var(--color-border);margin:24px auto}.card-translation{font-size:22px;text-align:center;color:var(--color-text-secondary);line-height:1.4;word-break:keep-all}.card-context{font-size:14px;text-align:center;color:var(--color-text-secondary);margin-top:12px;font-style:italic}.card-debug{position:absolute;top:8px;left:8px;right:8px;font-size:11px;font-family:monospace;color:var(--color-text-secondary);background:rgba(0,0,0,.05);padding:6px 8px;border-radius:4px;text-align:left;word-break:break-all;line-height:1.3;opacity:.9}.card-tap-hint{position:absolute;bottom:16px;font-size:13px;color:var(--color-text-secondary);opacity:.6}.card-reveal{display:block;opacity:0;transform:translateY(8px);max-height:0;overflow:hidden;transition:opacity .3s ease,transform .3s ease,max-height .3s ease}.card.revealed{animation:revealBump .3s ease}@keyframes revealBump{0%{transform:scale(1)}50%{transform:scale(1.012)}100%{transform:scale(1)}}.card.revealed .card-reveal{opacity:1;transform:translateY(0);max-height:300px}.card-tap-hint{transition:opacity .2s ease}.card.revealed .card-tap-hint{opacity:0;pointer-events:none}.card-slide-out{animation:slideOut .28s cubic-bezier(.4,0,1,1) forwards}.card-slide-in{animation:slideIn .3s cubic-bezier(0,0,.2,1) forwards}@keyframes slideOut{to{transform:translateX(-110%);opacity:0}}@keyframes slideIn{from{transform:translateX(60%);opacity:0}to{transform:translateX(0);opacity:1}}.rating-buttons{display:flex;gap:12px;padding:12px 16px;justify-content:center;pointer-events:none;flex-shrink:0}.rating-buttons.visible{pointer-events:auto}.rating-btn{flex:1;max-width:120px;padding:14px 8px;border-radius:var(--radius-sm);font-size:15px;font-weight:600;color:#fff;opacity:0;transform:translateY(12px)}.rating-buttons.visible .rating-btn{animation:ratingEnter .25s ease forwards}.rating-buttons.visible .rating-btn:nth-child(2){animation-delay:60ms}.rating-buttons.visible .rating-btn:nth-child(3){animation-delay:120ms}@keyframes ratingEnter{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}.rating-btn:active{animation:btnPress .3s ease}@keyframes btnPress{0%{transform:scale(1)}40%{transform:scale(.92)}70%{transform:scale(1.03)}100%{transform:scale(1)}}.rating-btn--hard{background:var(--color-hard)}.rating-btn--good{background:var(--color-good)}.rating-btn--easy{background:var(--color-easy)}.study-view{display:flex;flex-direction:column;flex:1;min-height:0}.complete-view{display:flex;flex-direction:column;align-items:center;justify-content:center;flex:1;min-height:0;padding:24px;text-align:center;contain:content}.complete-emoji{font-size:56px;margin-bottom:16px}.complete-title{font-size:22px;font-weight:700;margin-bottom:6px}.complete-subtitle{font-size:15px;color:var(--color-text-secondary);margin-bottom:24px}.complete-stats{display:flex;gap:24px;margin-bottom:32px}.complete-stat{text-align:center}.complete-stat-value{font-size:24px;font-weight:700;color:var(--color-primary)}.complete-stat-label{font-size:13px;color:var(--color-text-secondary);margin-top:4px}.btn-primary{background:var(--color-primary);color:#fff;padding:14px 32px;border-radius:var(--radius);font-size:16px;font-weight:600;transition:background var(--transition)}.btn-primary:active{background:var(--color-primary-dark)}.btn-secondary{background:var(--color-surface);color:var(--color-primary);padding:14px 32px;border-radius:var(--radius);font-size:16px;font-weight:600;width:100%;transition:background var(--transition)}.btn-secondary:active{background:var(--color-border)}.complete-actions{display:flex;flex-direction:column;gap:12px;align-items:center;width:100%;max-width:280px}.complete-actions .btn-primary{width:100%}.tts-btn{margin-top:12px;padding:8px;color:var(--color-primary);border-radius:50%;display:flex;align-items:center;justify-content:center;transition:background var(--transition)}.tts-btn:active{background:var(--color-surface)}.tts-btn-hint{animation:tts-pulse .8s ease-in-out 3}@keyframes tts-pulse{0%,100%{transform:scale(1)}50%{transform:scale(1.3)}}.tts-controls{display:flex;align-items:center}.report-btn-corner{position:absolute;top:10px;right:10px}.report-btn{padding:6px;color:var(--color-text-muted,#aaa);border-radius:50%;display:flex;align-items:center;justify-content:center;opacity:.35;transition:opacity var(--transition),color var(--transition)}.report-btn:active{background:var(--color-surface)}.report-btn:hover{opacity:1;color:var(--color-warning,#c9a000)}.report-btn--done{opacity:1;color:var(--color-success,#28a745);pointer-events:none}.report-feedback{position:absolute;right:0;top:calc(100% + 2px);font-size:11px;color:var(--color-text-muted,#888);white-space:nowrap;animation:report-fade 3s ease forwards}.report-feedback--success{color:var(--color-success,#28a745)}@keyframes report-fade{0%,70%{opacity:1}100%{opacity:0}}.report-reminder{position:absolute;right:-6px;top:calc(100% + 12px);background:var(--color-primary,#4a90d9);color:#fff;font-size:12px;line-height:1.4;padding:10px 14px;border-radius:12px;box-shadow:0 4px 14px rgba(0,0,0,.18);white-space:nowrap;cursor:pointer;animation:reminder-in .35s ease;z-index:10;user-select:none;max-width:260px;white-space:normal}.report-reminder::before{content:'';position:absolute;top:-6px;right:14px;width:12px;height:12px;background:var(--color-primary,#4a90d9);transform:rotate(45deg);border-radius:2px 0 0 0}@keyframes reminder-in{from{opacity:0;transform:translateY(-6px) scale(.95)}to{opacity:1;transform:translateY(0) scale(1)}}@keyframes reminder-out{from{opacity:1;transform:translateY(0) scale(1)}to{opacity:0;transform:translateY(-4px) scale(.95)}}.toggle{position:relative;display:inline-block;width:44px;height:26px;flex-shrink:0}.toggle input{opacity:0;width:0;height:0}.toggle-slider{position:absolute;cursor:pointer;inset:0;background:var(--color-border);border-radius:26px;transition:background var(--transition)}.toggle-slider::before{content:'';position:absolute;height:22px;width:22px;left:2px;bottom:2px;background:#fff;border-radius:50%;transition:transform var(--transition)}.toggle input:checked+.toggle-slider{background:var(--color-primary)}.toggle input:checked+.toggle-slider::before{transform:translateX(18px)}.settings-view{padding:16px;max-width:500px;margin:0 auto;width:100%;flex:1;min-height:0;overflow-y:auto;-webkit-overflow-scrolling:touch}.settings-section{margin-bottom:24px}.settings-section-title{font-size:13px;font-weight:600;text-transform:uppercase;color:var(--color-text-secondary);padding:0 4px 8px;letter-spacing:.5px}.settings-group{background:var(--color-surface);border-radius:var(--radius);overflow:hidden}.settings-row{display:flex;align-items:center;justify-content:space-between;padding:14px 16px;border-bottom:1px solid var(--color-border);font-size:15px}.settings-row:last-child{border-bottom:none}.settings-row-label{font-weight:500}.settings-row-value{color:var(--color-text-secondary);font-size:14px}.settings-row--clickable{cursor:pointer}.settings-row--action{cursor:pointer;color:var(--color-primary);justify-content:center;font-weight:500}.settings-row--danger{color:var(--color-hard)}.theme-options{display:flex;gap:4px;background:var(--color-border);border-radius:var(--radius-sm);padding:2px}.theme-option{padding:6px 12px;border-radius:6px;font-size:13px;font-weight:500;color:var(--color-text-secondary);transition:all var(--transition)}.theme-option.active{background:var(--color-card-bg);color:var(--color-text);box-shadow:0 1px 3px rgba(0,0,0,.1)}.lang-tag{display:inline-block;padding:4px 10px;border-radius:20px;font-size:13px;font-weight:500;background:var(--color-surface);color:var(--color-text-secondary)}.lang-tag.active{background:var(--color-primary);color:#fff}.lang-tags{display:flex;gap:8px;flex-wrap:wrap}.confirm-overlay{position:fixed;inset:0;background:var(--color-overlay);display:flex;align-items:center;justify-content:center;z-index:100;padding:24px}.confirm-dialog{background:var(--color-card-bg);border-radius:var(--radius);padding:24px;max-width:320px;width:100%;text-align:center;max-height:calc(100dvh - 48px);overflow-y:auto;-webkit-overflow-scrolling:touch}.confirm-title{font-size:17px;font-weight:600;margin-bottom:8px}.confirm-message{font-size:14px;color:var(--color-text-secondary);margin-bottom:20px;line-height:1.4}.confirm-actions{display:flex;gap:12px;margin-top:16px}.confirm-btn{flex:1;padding:12px;border-radius:var(--radius-sm);font-size:15px;font-weight:600}.confirm-btn--cancel{background:var(--color-surface);color:var(--color-text)}.confirm-btn--danger{background:var(--color-hard);color:#fff}.settings-row-right{display:flex;align-items:center;gap:12px}.reset-lang-btn{font-size:12px;font-weight:600;color:var(--color-hard);padding:3px 8px;border-radius:var(--radius-sm);background:0 0;cursor:pointer;transition:background var(--transition);white-space:nowrap}.reset-lang-btn:active{background:rgba(255,59,48,.1)}.native-lang-picker{max-width:380px}.native-lang-picker .language-grid{margin-bottom:20px}.native-lang-picker .language-card{padding:14px 12px;gap:6px}.add-lang-dialog{max-width:380px}.add-lang-dialog .language-grid{margin-bottom:20px}.add-lang-dialog .language-card{padding:14px 12px;gap:6px}.native-lang-picker .language-card-flag{font-size:24px}.native-lang-picker .language-card-name{font-size:14px}.compat-warning-settings{display:block;font-size:13px;line-height:1.5;color:#664d03;background:#fff3cd}[data-theme=dark] .compat-warning-settings{color:#ffe69c;background:#3d3200}@media (prefers-color-scheme:dark){[data-theme=auto] .compat-warning-settings{color:#ffe69c;background:#3d3200}}.update-banner{position:fixed;bottom:env(safe-area-inset-bottom,0);left:0;right:0;background:var(--color-surface);border-top:1px solid var(--color-border);padding:12px 16px;padding-bottom:max(12px,env(safe-area-inset-bottom,12px));z-index:200;box-shadow:0 -4px 20px rgba(0,0,0,.1);animation:slideUpIn .3s ease}.update-banner-content{display:flex;align-items:center;justify-content:space-between;gap:12px;max-width:500px;margin:0 auto}.update-banner-text{display:flex;flex-direction:column;gap:2px;flex:1;min-width:0}.update-banner-title{font-size:15px;font-weight:600;color:var(--color-text)}.update-banner-message{font-size:13px;color:var(--color-text-secondary)}.update-banner-btn{background:var(--color-primary);color:#fff;padding:10px 20px;border-radius:var(--radius-sm);font-size:15px;font-weight:600;white-space:nowrap;flex-shrink:0;transition:opacity var(--transition)}.update-banner-btn:active{opacity:.8}@keyframes slideUpIn{from{transform:translateY(100%)}to{transform:translateY(0)}}@media (prefers-reduced-motion:no-preference){.card{will-change:transform,opacity}.progress-bar-fill,.session-progress-fill{will-change:width}}@media (prefers-reduced-motion:reduce){.card-slide-in,.card-slide-out,.card.revealed,.rating-btn:active,.rating-buttons.visible .rating-btn{animation-duration:1ms;animation-delay:0s}}@media (max-height:700px){.header{padding:4px 16px;min-height:40px}.counter{padding:2px 16px;font-size:13px}.card-container{padding:4px 12px}.card{padding:16px}.card-phrase{font-size:22px}.card-divider{margin:14px auto}.card-translation{font-size:18px}.card-context{font-size:13px;margin-top:8px}.card-tap-hint{bottom:10px;font-size:12px}.rating-buttons{padding:8px 12px;gap:10px}.rating-btn{padding:10px 6px;font-size:14px}.complete-emoji{font-size:44px;margin-bottom:12px}.complete-title{font-size:20px}.complete-subtitle{font-size:14px;margin-bottom:16px}.complete-stats{margin-bottom:24px}.complete-stat-value{font-size:22px}.btn-primary,.btn-secondary{padding:12px 28px;font-size:15px}.tts-btn{margin-top:8px}}@media (max-height:812px) and (min-height:701px){.card-phrase{font-size:26px}.card-divider{margin:18px auto}.card-translation{font-size:20px}}.card-kbd-hint,.rating-kbd-hint{display:none}@media (min-width:600px){.card-kbd-hint{display:none;font-size:11px;background:rgba(0,0,0,.08);border:1px solid rgba(0,0,0,.15);border-radius:3px;padding:1px 5px;margin-left:6px;font-family:system-ui,sans-serif;font-style:normal;font-weight:500;vertical-align:middle}.card:hover:not(.revealed) .card-kbd-hint{display:inline}.rating-kbd-hint{display:none;font-size:11px;background:rgba(255,255,255,.25);border:1px solid rgba(255,255,255,.4);border-radius:3px;padding:1px 4px;margin-left:4px;font-family:system-ui,sans-serif;font-weight:600;vertical-align:middle}.rating-btn:hover .rating-kbd-hint{display:inline}}@media (min-width:600px){.card{min-height:220px}}.streak-badge{font-size:14px;font-weight:600;color:var(--color-primary);background:var(--color-surface);padding:6px 16px;border-radius:20px;margin-bottom:16px}.complete-progress{width:100%;max-width:280px;margin:0 auto 24px;display:flex;flex-direction:column;gap:8px}.progress-bar-track{height:6px;background:var(--color-border);border-radius:3px;overflow:hidden}.progress-bar-fill{height:100%;background:linear-gradient(90deg,var(--color-good),#5ab87a);border-radius:3px;transition:width .6s ease;min-width:0;box-shadow:0 0 6px rgba(129,201,149,.4)}.progress-label{text-align:center;font-size:13px;color:var(--color-text-secondary)}.settings-row--progress{flex-direction:column;align-items:stretch;gap:8px;padding:12px 16px}.settings-row--progress .progress-bar-track{width:100%}.settings-row--progress .progress-label{text-align:right;font-size:12px}.icon-review-view{flex:1;overflow-y:auto;padding:24px 16px 40px;display:flex;flex-direction:column;gap:24px}.icon-review-header{text-align:center}.icon-review-title{font-size:22px;font-weight:700;color:var(--color-text);margin-bottom:8px}.icon-review-subtitle{font-size:14px;color:var(--color-text-secondary);line-height:1.5;max-width:340px;margin:0 auto}.icon-review-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:16px}.icon-review-card{background:var(--color-card-bg);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px;display:flex;flex-direction:column;align-items:center;gap:16px;position:relative}.icon-review-badge{position:absolute;top:12px;left:12px;background:var(--color-primary);color:#fff;font-size:11px;font-weight:700;letter-spacing:.5px;padding:3px 8px;border-radius:20px}.icon-review-icon{width:140px;height:140px;border-radius:28px;overflow:hidden;box-shadow:0 4px 16px rgba(0,0,0,.18)}.icon-review-icon svg{width:100%;height:100%;display:block}.icon-review-info{text-align:center}.icon-review-name{font-size:15px;font-weight:600;color:var(--color-text);margin-bottom:4px}.icon-review-desc{font-size:13px;color:var(--color-text-secondary);line-height:1.4}.icon-review-footer{text-align:center;font-size:13px;color:var(--color-text-secondary);background:var(--color-surface);border-radius:var(--radius-sm);padding:14px 16px;line-height:1.5}