:root{--color-transparent: transparent;--color-text: var(--tg-theme-text-color, #17212b);--color-text-muted: var(--tg-theme-hint-color, #66717d);--color-background: #eef3f7;--color-surface: var(--tg-theme-secondary-bg-color, #ffffff);--color-border: var(--tg-theme-section-separator-color, #d8e0e7);--color-accent: var(--tg-theme-button-color, #2481cc);--color-primary-text: #2164aa;--color-primary-soft: #2c8bff29;--color-primary-strong: #2c8bff47;--color-success-text: #257a4b;--color-success-soft: #2dbe7029;--color-success-strong: #2dbe7047;--color-danger-text: #a83636;--color-danger-soft: #ff5c5c29;--color-danger-strong: #ff5c5c47;--color-danger-border: #a8363652;--color-neutral-text: #43505c;--color-neutral-soft: #77859429;--color-surface-translucent: #ffffffcc;--color-backdrop: #17212b59;--color-shadow-soft: #17212b24;--color-shadow-strong: #17212b33}:root{--app-content-top: 16px;--app-content-bottom: 18px;--bottom-navigation-height: 64px;color:var(--color-text);background:var(--color-background);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-synthesis:none;text-rendering:optimizeLegibility}*{box-sizing:border-box}html,body,#app{min-height:100%;margin:0}body{background:var(--color-background)}button,input{font:inherit}.app-shell{min-height:100vh;min-height:100dvh;color:var(--color-text);background:radial-gradient(circle at 50% -20%,var(--color-surface-translucent),var(--color-transparent) 34%),var(--color-background)}.app-content{width:min(100%,720px);margin:0 auto;padding:calc(var(--app-content-top) + env(safe-area-inset-top)) 16px calc(var(--app-content-bottom) + env(safe-area-inset-bottom))}.app-content-with-navigation{padding-bottom:calc(var(--app-content-bottom) + var(--bottom-navigation-height) + env(safe-area-inset-bottom))}.bottom-navigation{position:fixed;z-index:30;bottom:0;left:50%;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));width:min(100%,720px);min-height:calc(var(--bottom-navigation-height) + env(safe-area-inset-bottom));padding:8px 8px calc(8px + env(safe-area-inset-bottom));border-top:1px solid var(--color-border);background:var(--color-surface);box-shadow:0 -6px 18px var(--color-shadow-soft);transform:translate(-50%)}.bottom-navigation-item{display:grid;place-items:center;align-content:center;gap:2px;min-width:0;min-height:48px;padding:4px;border:0;border-radius:12px;background:var(--color-transparent);color:var(--color-text-muted);cursor:pointer;font-size:11px;font-weight:700;line-height:1;text-decoration:none}.bottom-navigation-item:not(:disabled):hover,.bottom-navigation-item:not(:disabled):focus,.bottom-navigation-item.active{background:var(--color-primary-soft);color:var(--color-primary-text)}.bottom-navigation-item:disabled{cursor:default;opacity:.46}.auth-state,.auth-error-backdrop{min-height:100vh;min-height:100dvh}.auth-state{display:grid;place-items:center;padding:24px;color:var(--color-text-muted);font-weight:700}.auth-error-backdrop{display:grid;place-items:center;padding:24px;background:var(--color-backdrop)}.auth-error{display:grid;gap:16px;width:min(100%,420px);padding:24px;border:1px solid var(--color-border);border-radius:16px;background:var(--color-surface);box-shadow:0 18px 50px var(--color-shadow-strong);text-align:center}.auth-error h1,.auth-error p{margin:0}.auth-error h1{color:var(--color-danger-text);font-size:22px}.auth-error p{color:var(--color-text-muted);line-height:1.5}.screen{display:grid;gap:18px}.screen-header{display:grid;gap:6px}.screen-header h1{margin:0;font-size:28px;line-height:1.12}.eyebrow{margin:0;color:var(--color-text-muted);font-size:13px;font-weight:700;letter-spacing:0;text-transform:uppercase}.answer-panel,.list-row,.metric{border:1px solid var(--color-border);border-radius:8px;background:var(--color-surface)}.answer-panel{display:grid;gap:10px;padding:16px}.answer-panel label{color:var(--color-text-muted);font-size:14px;font-weight:700}.actions{display:grid;grid-template-columns:1fr 1fr;gap:10px}.list{display:grid;gap:10px}.list-row{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:72px;padding:14px}.list-row div{display:grid;gap:4px;min-width:0}.list-row span,.list-row small{color:var(--color-text-muted)}.metrics-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.metric{display:grid;gap:8px;min-height:98px;padding:14px}.metric span{color:var(--color-text-muted)}.metric strong{font-size:30px}.admin-header{grid-template-columns:1fr auto;align-items:end}.home-layout{display:grid;grid-template-rows:auto 1fr;gap:16px;min-height:calc(100vh - var(--app-content-top) - var(--app-content-bottom) - var(--bottom-navigation-height) - env(safe-area-inset-top) - env(safe-area-inset-bottom));min-height:calc(100dvh - var(--app-content-top) - var(--app-content-bottom) - var(--bottom-navigation-height) - env(safe-area-inset-top) - env(safe-area-inset-bottom))}.home-toolbar{display:flex;justify-content:flex-end}.settings-button{display:grid;place-items:center;width:46px;height:46px;padding:0;border:1px solid var(--color-border);border-radius:12px;background:var(--color-surface);color:var(--color-text-muted);cursor:default;opacity:.58}.home-menu{display:grid;align-self:center;gap:12px}.home-menu-button{display:grid;grid-template-columns:40px minmax(0,1fr);align-items:center;width:100%;min-height:74px;padding:16px;border:2px solid var(--color-transparent);border-radius:14px;color:var(--color-text);cursor:pointer;font-size:22px;font-weight:800;text-align:left;text-decoration:none}.home-menu-button:not(:disabled):hover,.home-menu-button:not(:disabled):focus{border-color:var(--color-accent)}.home-menu-button:disabled{cursor:default;opacity:.52}.home-menu-learn{background:var(--color-primary-soft);color:var(--color-primary-text)}.home-menu-repeat{background:var(--color-success-soft);color:var(--color-success-text)}.home-menu-translate{background:var(--color-neutral-soft);color:var(--color-neutral-text)}.home-menu-conversation{background:var(--color-primary-strong);color:var(--color-primary-text)}.practice-layout{position:relative;display:grid;grid-template-rows:auto minmax(280px,1fr) auto;gap:18px;min-height:calc(100vh - var(--app-content-top) - var(--app-content-bottom) - var(--bottom-navigation-height) - env(safe-area-inset-top) - env(safe-area-inset-bottom));min-height:calc(100dvh - var(--app-content-top) - var(--app-content-bottom) - var(--bottom-navigation-height) - env(safe-area-inset-top) - env(safe-area-inset-bottom))}.practice-layout-without-header{grid-template-rows:minmax(280px,1fr) auto}.practice-start-backdrop{position:fixed;z-index:40;top:0;right:0;bottom:0;left:0;display:grid;place-items:center;padding:24px;background:var(--color-backdrop)}.practice-start-dialog{display:grid;gap:14px;width:min(100%,420px);padding:24px;border:1px solid var(--color-border);border-radius:16px;background:var(--color-surface);box-shadow:0 18px 50px var(--color-shadow-strong);text-align:center}.practice-start-dialog h2,.practice-start-dialog p{margin:0}.practice-start-dialog h2{font-size:22px}.practice-start-dialog p{color:var(--color-text-muted);font-size:14px;line-height:1.45}.practice-start-button{min-height:48px;padding:0 18px;border:2px solid var(--color-transparent);border-radius:12px;background:var(--color-primary-soft);color:var(--color-primary-text);cursor:pointer;font-weight:800}.practice-start-button:hover,.practice-start-button:focus{border-color:var(--color-accent)}.error-toast{position:fixed;z-index:20;top:46%;left:50%;display:grid;justify-items:center;gap:14px;width:min(calc(100% - 24px),520px);padding:18px;border:2px solid var(--color-danger-border);border-radius:12px;background:var(--color-danger-soft);box-shadow:0 12px 30px var(--color-shadow-soft);color:var(--color-danger-text);font-size:14px;font-weight:700;line-height:1.25;transform:translate(-50%)}.error-toast span{min-width:0;text-align:center;overflow-wrap:anywhere}.error-toast-close{min-width:128px;min-height:42px;padding:0 16px;border:2px solid var(--color-transparent);border-radius:10px;background:var(--color-danger-soft);color:var(--color-danger-text);cursor:pointer;font-weight:800}.error-toast-close:hover,.error-toast-close:focus{border-color:var(--color-danger-border)}.practice-top{display:grid;gap:12px}.level-grid,.direction-row{gap:8px}.level-grid{display:grid}.level-row{display:grid;gap:8px}.level-row:first-child{grid-template-columns:repeat(4,1fr)}.level-row:last-child{grid-template-columns:repeat(4,1fr)}.direction-row{display:flex;overflow-x:auto;padding-bottom:2px}.level-button,.direction-button,.next-button{min-height:40px;border:2px solid var(--color-transparent);border-radius:12px;background:var(--color-surface);color:var(--color-text);cursor:pointer;font-weight:700;white-space:nowrap}.level-button{width:100%}.level-any{background:var(--color-neutral-soft);color:var(--color-neutral-text)}.level-a1{background:var(--color-danger-soft);color:var(--color-danger-text)}.level-a2{background:var(--color-danger-strong);color:var(--color-danger-text)}.level-b1{background:var(--color-primary-soft);color:var(--color-primary-text)}.level-b2{background:var(--color-primary-strong);color:var(--color-primary-text)}.level-c1{background:var(--color-success-soft);color:var(--color-success-text)}.level-c2{background:var(--color-success-strong);color:var(--color-success-text)}.direction-button{flex:1 1 0;padding:0 12px}.direction-ru-en{background:var(--color-danger-soft);color:var(--color-danger-text)}.direction-en-ru{background:var(--color-primary-soft);color:var(--color-primary-text)}.direction-random{background:var(--color-neutral-soft);color:var(--color-neutral-text)}.level-button.active,.direction-button.active{border-color:var(--color-accent)}.word-stage{display:grid;grid-template-rows:1fr 1fr;gap:0;min-height:100%;border:1px solid var(--color-border);border-radius:8px;background:var(--color-surface);overflow:hidden;text-align:center}.word-stage-half{position:relative;display:grid;place-items:center;align-content:center;gap:10px;min-height:150px;padding:18px}.word-stage-prompt{border-bottom:1px solid var(--color-border)}.word-stage-learn{grid-template-rows:1fr}.learn-word-card{position:relative;display:grid;place-items:center;align-content:center;gap:18px;min-height:100%;padding:24px 18px}.learn-translation{display:grid;justify-items:center;gap:6px;max-width:100%}.learn-translation span{color:var(--color-text-muted);font-size:12px;font-weight:700;letter-spacing:0}.learn-translation strong{max-width:100%;overflow-wrap:anywhere;color:var(--color-success-text);font-size:clamp(24px,9vw,40px);line-height:1.08}.word-language{position:absolute;top:12px;left:14px;margin:0;color:var(--color-text-muted);font-size:12px;font-weight:700;letter-spacing:0}.word-level{position:absolute;top:10px;right:12px;display:inline-grid;place-items:center;min-width:38px;min-height:26px;padding:0 9px;border-radius:999px;background:var(--color-primary-soft);color:var(--color-primary-text);font-size:12px;font-weight:800}.word-info{display:grid;place-items:center;gap:8px;max-width:100%}.word-info-main{display:flex;align-items:center;justify-content:center;gap:10px;width:100%;max-width:100%;min-width:0}.word-info-text-box{display:block;max-width:100%;min-width:0;overflow:visible}.word-info-text{display:block;width:max-content;max-width:none;overflow:visible;font-size:clamp(24px,10vw,44px);line-height:1.04;transform:scale(var(--word-scale, 1));transform-origin:center;white-space:nowrap}.word-info-details{display:grid;justify-items:center;gap:4px;font-size:15px;line-height:1.3}.word-pronunciation{color:var(--color-primary-text);font-weight:700}.word-part-of-speech{color:var(--color-success-text);font-weight:700}.audio-button{display:grid;place-items:center;flex:0 0 42px;width:42px;height:42px;border:2px solid var(--color-transparent);border-radius:12px;background:var(--color-primary-soft);color:var(--color-primary-text);cursor:pointer}.audio-button:hover,.audio-button:focus{border-color:var(--color-accent)}.answer-placeholder{color:var(--color-text-muted);font-size:14px;font-weight:700}.answer-result{display:grid;place-items:center;width:min(100%,420px);gap:10px}.answer-comparison{display:grid;justify-items:center;gap:8px;max-width:100%}.answer-comparison-skipped{gap:4px;width:100%}.answer-line{display:inline-flex;justify-content:center;max-width:100%;margin:0;overflow:visible;line-height:1.08;white-space:pre}.answer-line-submitted{color:var(--color-text-muted);font-size:clamp(15px,6vw,24px);font-weight:700}.answer-line-correct{color:var(--color-success-text);font-size:clamp(24px,10vw,44px);font-weight:800}.answer-line-incorrect{color:var(--color-danger-text)}.answer-line-neutral{color:var(--color-text)}.answer-line-skipped{width:100%;overflow-wrap:anywhere;color:var(--color-primary-text);font-size:clamp(14px,min(7vw,calc(18dvh / var(--skip-answer-count))),34px);line-height:1.05;white-space:normal}.answer-char{display:inline-grid;place-items:center;min-width:.42em;border-radius:6px;white-space:pre}.answer-char-replace,.answer-char-extra{background:var(--color-danger-strong);color:var(--color-danger-text)}.answer-char-missing{min-width:.72em;border:1px dashed var(--color-danger-border);background:var(--color-danger-soft);color:var(--color-danger-text)}.answer-char-expected{background:var(--color-success-soft);color:var(--color-success-text)}.submitted-answer{max-width:100%;overflow-wrap:anywhere;color:var(--color-text-muted);font-size:15px;font-weight:700;line-height:1.2}.word-info-correct .word-info-text,.word-info-correct .word-pronunciation,.word-info-correct .word-part-of-speech{color:var(--color-success-text)}.word-info-incorrect .word-info-text,.word-info-incorrect .word-pronunciation,.word-info-incorrect .word-part-of-speech{color:var(--color-danger-text)}.next-button{min-height:48px;padding:0 18px;background:var(--color-primary-soft);color:var(--color-primary-text)}.practice-actions{display:grid;gap:12px}.word-actions{display:grid;grid-template-columns:1fr}.answer-input-panel{position:relative;display:grid;grid-template-columns:minmax(0,1fr) 48px 48px;gap:8px}.audio-waveform{position:absolute;z-index:15;top:33px;right:30px;display:grid;grid-template-columns:auto minmax(0,1fr);align-items:center;gap:8px;width:min(50vw,540px);min-height:56px;padding:8px 10px;border:1px solid var(--color-border);border-radius:12px;background:var(--color-surface);box-shadow:0 8px 24px var(--color-shadow-soft);pointer-events:none}.audio-waveform-time{color:var(--color-neutral-text);font-size:12px;font-variant-numeric:tabular-nums;font-weight:800}.audio-waveform-canvas{display:block;width:100%;height:34px}.answer-input{min-width:0;min-height:48px;padding:0 14px;border:2px solid var(--color-transparent);border-radius:12px;background:var(--color-surface-translucent);color:var(--color-text);font-weight:700;outline:none}.answer-input::placeholder{color:var(--color-text-muted);font-weight:600}.answer-input:focus{border-color:var(--color-accent)}.answer-icon-button{display:grid;place-items:center;min-width:48px;min-height:48px;border:2px solid var(--color-transparent);border-radius:12px;cursor:pointer}.microphone-button{background:var(--color-danger-soft);color:var(--color-danger-text)}.microphone-button.active{border-color:var(--color-danger-text);background:var(--color-danger-strong)}.submit-answer-button{background:var(--color-primary-soft);color:var(--color-primary-text)}.answer-icon-button:hover,.answer-icon-button:focus{border-color:var(--color-accent)}.level-button:disabled,.direction-button:disabled,.answer-input:disabled,.answer-icon-button:disabled{cursor:wait;opacity:.64}.next-button:disabled{cursor:wait;opacity:.64}.next-button:not(:disabled):hover,.next-button:not(:disabled):focus{border-color:var(--color-accent)}.request-error{margin:0;color:var(--color-danger-text);font-weight:700}@media(min-width:760px){:root{--app-content-top: 32px}}