:root{--vw-primary: var(--tg-theme-button-color, #3390ec);--vw-primary-text: var(--tg-theme-button-text-color, #ffffff);--vw-bg: var(--tg-theme-bg-color, #ffffff);--vw-bg-secondary: var(--tg-theme-secondary-bg-color, #f0f2f5);--vw-text: var(--tg-theme-text-color, #1a1a1a);--vw-hint: var(--tg-theme-hint-color, #8e8e93);--vw-link: var(--tg-theme-link-color, #3390ec);--vw-destructive: var(--tg-theme-destructive-text-color, #ff3b30);--vw-header-bg: var(--tg-theme-header-bg-color, #ffffff);--vw-primary-soft: color-mix(in srgb, var(--vw-primary) 12%, transparent);--vw-primary-hover: color-mix(in srgb, var(--vw-primary) 85%, black);--vw-success: #34c759;--vw-success-soft: rgba(52, 199, 89, .12);--vw-warning: #ff9f0a;--vw-separator: rgba(60, 60, 67, .08);--vw-card-bg: var(--vw-bg);--vw-radius: 14px;--vw-radius-sm: 10px;--vw-radius-xs: 6px;--vw-radius-full: 9999px;--vw-shadow-sm: 0 1px 2px rgba(0, 0, 0, .04);--vw-shadow: 0 2px 8px rgba(0, 0, 0, .06), 0 0 1px rgba(0, 0, 0, .08);--vw-shadow-lg: 0 8px 24px rgba(0, 0, 0, .1), 0 0 1px rgba(0, 0, 0, .1);--vw-transition: .2s cubic-bezier(.25, .1, .25, 1);--vw-transition-spring: .3s cubic-bezier(.34, 1.56, .64, 1)}*{margin:0;padding:0;box-sizing:border-box;-webkit-tap-highlight-color:transparent}body{font-family:-apple-system,BlinkMacSystemFont,SF Pro Display,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;background:var(--vw-bg-secondary);color:var(--vw-text);font-size:15px;line-height:1.5;overflow-x:hidden;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}#root{min-height:100vh;display:flex;flex-direction:column}.card{background:var(--vw-card-bg);border-radius:var(--vw-radius);border:1px solid var(--vw-separator);padding:16px;margin-bottom:12px;transition:box-shadow var(--vw-transition)}.card:active{box-shadow:var(--vw-shadow-sm)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:11px 22px;border:none;border-radius:var(--vw-radius-sm);font-size:15px;font-weight:600;cursor:pointer;transition:all var(--vw-transition);-webkit-user-select:none;user-select:none;position:relative;overflow:hidden;letter-spacing:-.01em}.btn:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:currentColor;opacity:0;transition:opacity var(--vw-transition)}.btn:active:after{opacity:.1}.btn:active{transform:scale(.97)}.btn:disabled{opacity:.4;cursor:not-allowed;transform:none}.btn:disabled:after{display:none}.btn-primary{background:var(--vw-primary);color:var(--vw-primary-text);box-shadow:0 2px 8px color-mix(in srgb,var(--vw-primary) 30%,transparent)}.btn-primary:active{box-shadow:0 1px 4px color-mix(in srgb,var(--vw-primary) 20%,transparent)}.btn-secondary{background:var(--vw-bg-secondary);color:var(--vw-text);border:1px solid var(--vw-separator)}.btn-danger{background:var(--vw-destructive);color:#fff;box-shadow:0 2px 8px #ff3b3040}.btn-ghost{background:transparent;color:var(--vw-primary);padding:8px 16px}.btn-full{width:100%}.btn-icon{width:44px;height:44px;padding:0;border-radius:50%;font-size:20px}.input{width:100%;padding:12px 16px;border:1.5px solid var(--vw-separator);border-radius:var(--vw-radius-sm);font-size:16px;background:var(--vw-card-bg);color:var(--vw-text);outline:none;transition:border-color var(--vw-transition),box-shadow var(--vw-transition)}.input:focus{border-color:var(--vw-primary);box-shadow:0 0 0 3px var(--vw-primary-soft)}.input::placeholder{color:var(--vw-hint)}textarea.input{resize:vertical;min-height:88px;font-family:inherit;line-height:1.5}.select{width:100%;padding:12px 36px 12px 16px;border:1.5px solid var(--vw-separator);border-radius:var(--vw-radius-sm);font-size:15px;font-weight:500;background:var(--vw-card-bg);color:var(--vw-text);outline:none;-webkit-appearance:none;-moz-appearance:none;appearance:none;cursor:pointer;transition:border-color var(--vw-transition),box-shadow var(--vw-transition);background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='7' fill='none'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%238e8e93' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 14px center}.select:focus{border-color:var(--vw-primary);box-shadow:0 0 0 3px var(--vw-primary-soft)}.label{display:block;font-size:13px;font-weight:600;color:var(--vw-hint);margin-bottom:6px;text-transform:uppercase;letter-spacing:.5px}.page{flex:1;padding:16px 16px 88px;background:var(--vw-bg-secondary)}.page-title{font-size:24px;font-weight:700;margin-bottom:16px;letter-spacing:-.02em}.lang-pill{display:inline-flex;align-items:center;gap:6px;padding:8px 16px;background:var(--vw-primary-soft);color:var(--vw-primary);border-radius:var(--vw-radius-full);font-size:14px;font-weight:600;cursor:pointer;transition:all var(--vw-transition);-webkit-user-select:none;user-select:none;border:1.5px solid transparent}.lang-pill:active{background:var(--vw-primary);color:var(--vw-primary-text);border-color:var(--vw-primary)}.spinner{width:24px;height:24px;border:2.5px solid var(--vw-separator);border-top:2.5px solid var(--vw-primary);border-radius:50%;animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.recording-dot{width:10px;height:10px;background:#fff;border-radius:50%;animation:recordPulse 1.2s ease-in-out infinite}@keyframes recordPulse{0%,to{opacity:1;transform:scale(1)}50%{opacity:.4;transform:scale(.7)}}.toast{position:fixed;bottom:96px;left:50%;transform:translate(-50%);padding:10px 24px;background:var(--vw-text);color:var(--vw-bg);border-radius:var(--vw-radius-full);font-size:14px;font-weight:500;z-index:10000;animation:toastIn .3s cubic-bezier(.34,1.56,.64,1);box-shadow:var(--vw-shadow-lg);white-space:nowrap;max-width:calc(100vw - 48px);overflow:hidden;text-overflow:ellipsis}@keyframes toastIn{0%{opacity:0;transform:translate(-50%,12px) scale(.9)}to{opacity:1;transform:translate(-50%) scale(1)}}.swap-btn{display:flex;align-items:center;justify-content:center;width:40px;height:40px;border:1.5px solid var(--vw-separator);background:var(--vw-card-bg);border-radius:50%;font-size:18px;cursor:pointer;transition:all var(--vw-transition-spring);flex-shrink:0;color:var(--vw-primary)}.swap-btn:active{transform:rotate(180deg);background:var(--vw-primary-soft);border-color:var(--vw-primary)}.bubble{max-width:80%;padding:10px 14px;border-radius:18px;margin-bottom:6px;font-size:15px;line-height:1.45;word-wrap:break-word;position:relative;animation:bubbleIn .25s cubic-bezier(.34,1.56,.64,1)}@keyframes bubbleIn{0%{opacity:0;transform:translateY(8px) scale(.95)}to{opacity:1;transform:translateY(0) scale(1)}}.bubble-mine{background:var(--vw-primary);color:var(--vw-primary-text);margin-left:auto;border-bottom-right-radius:6px}.bubble-other{background:var(--vw-card-bg);color:var(--vw-text);border:1px solid var(--vw-separator);border-bottom-left-radius:6px}.bubble-translated{font-size:13px;opacity:.8;margin-top:4px;font-style:italic}.tab-bar{position:fixed;bottom:0;left:0;right:0;display:flex;background:var(--vw-card-bg);border-top:1px solid var(--vw-separator);padding:6px 0 2px;padding-bottom:max(6px,env(safe-area-inset-bottom));z-index:100;backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px)}.tab-item{flex:1;display:flex;flex-direction:column;align-items:center;gap:2px;padding:4px;background:none;border:none;color:var(--vw-hint);font-size:10px;font-weight:500;cursor:pointer;transition:color var(--vw-transition);position:relative}.tab-item.active{color:var(--vw-primary)}.tab-icon{font-size:24px;line-height:1;transition:transform var(--vw-transition-spring)}.tab-item.active .tab-icon{transform:scale(1.08)}.empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:48px 24px;text-align:center;color:var(--vw-hint)}.empty-state-icon{font-size:56px;margin-bottom:16px;opacity:.8}.toggle-switch{position:relative;width:51px;height:31px;flex-shrink:0}.toggle-switch input{opacity:0;width:0;height:0;position:absolute}.toggle-slider{position:absolute;top:0;right:0;bottom:0;left:0;background:var(--vw-separator);border-radius:var(--vw-radius-full);cursor:pointer;transition:background var(--vw-transition)}.toggle-slider:before{content:"";position:absolute;height:27px;width:27px;left:2px;bottom:2px;background:#fff;border-radius:50%;transition:transform var(--vw-transition-spring);box-shadow:0 1px 3px #00000026}.toggle-switch input:checked+.toggle-slider{background:var(--vw-primary)}.toggle-switch input:checked+.toggle-slider:before{transform:translate(20px)}.divider{height:1px;background:var(--vw-separator);margin:0}.settings-row{display:flex;justify-content:space-between;align-items:center;padding:12px 0}.settings-row+.settings-row{border-top:1px solid var(--vw-separator)}.settings-row-label{font-size:15px;font-weight:500}.settings-row-hint{font-size:12px;color:var(--vw-hint);margin-top:2px}.badge{display:inline-flex;align-items:center;justify-content:center;min-width:18px;height:18px;padding:0 5px;border-radius:var(--vw-radius-full);font-size:11px;font-weight:700;line-height:1}.badge-primary{background:var(--vw-primary-soft);color:var(--vw-primary)}.badge-danger{background:var(--vw-destructive);color:#fff}.voice-btn{width:52px;height:52px;border-radius:50%;border:none;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all var(--vw-transition-spring);position:relative;overflow:visible}.voice-btn-idle{background:var(--vw-primary);color:var(--vw-primary-text);box-shadow:0 4px 16px color-mix(in srgb,var(--vw-primary) 35%,transparent)}.voice-btn-idle:active{transform:scale(.92);box-shadow:0 2px 8px color-mix(in srgb,var(--vw-primary) 25%,transparent)}.voice-btn-recording{background:var(--vw-destructive);color:#fff;box-shadow:0 4px 16px #ff3b3059;animation:voiceBtnPulse 1.5s ease-in-out infinite}.voice-btn-recording:active{transform:scale(.92)}@keyframes voiceBtnPulse{0%,to{box-shadow:0 4px 16px #ff3b3059}50%{box-shadow:0 4px 24px #ff3b308c,0 0 0 8px #ff3b301a}}.voice-btn svg{width:22px;height:22px;fill:currentColor;transition:transform var(--vw-transition)}.voice-btn-recording svg{animation:micShake .4s ease-in-out}@keyframes micShake{0%,to{transform:scale(1)}25%{transform:scale(1.15)}50%{transform:scale(.95)}75%{transform:scale(1.05)}}.voice-timer{display:flex;align-items:center;gap:6px;font-size:14px;font-weight:600;color:var(--vw-destructive);font-variant-numeric:tabular-nums}::-webkit-scrollbar{width:4px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--vw-separator);border-radius:2px}.text-hint{color:var(--vw-hint)}.text-primary{color:var(--vw-primary)}.text-danger{color:var(--vw-destructive)}.font-mono{font-variant-numeric:tabular-nums}.chat-header{position:sticky;top:0;z-index:10;display:flex;align-items:center;gap:10px;padding:10px 0;background:color-mix(in srgb,var(--vw-bg) 85%,transparent);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border-bottom:1px solid var(--vw-separator)}.chat-input-bar{display:flex;gap:8px;align-items:center;padding:10px 0;background:var(--vw-bg-secondary);border-top:1px solid var(--vw-separator)}.chat-input-bar .input{flex:1;padding:10px 14px;font-size:15px;border-radius:var(--vw-radius-full);background:var(--vw-card-bg)}.send-btn{width:40px;height:40px;border-radius:50%;border:none;background:var(--vw-primary);color:var(--vw-primary-text);display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all var(--vw-transition-spring);flex-shrink:0;box-shadow:0 2px 8px color-mix(in srgb,var(--vw-primary) 30%,transparent)}.send-btn:active{transform:scale(.9)}.send-btn:disabled{opacity:.3;cursor:not-allowed;transform:none;box-shadow:none}.send-btn svg{width:18px;height:18px}.status-dot{width:8px;height:8px;border-radius:50%;flex-shrink:0;transition:background var(--vw-transition)}.status-dot-online{background:var(--vw-success);box-shadow:0 0 6px #34c75966}.status-dot-offline{background:var(--vw-hint);opacity:.5}.session-code{font-size:28px;font-weight:700;font-family:SF Mono,Menlo,Monaco,Courier New,monospace;letter-spacing:4px;padding:12px 0;color:var(--vw-primary);cursor:pointer;transition:all var(--vw-transition)}.session-code:active{transform:scale(.97);opacity:.7}.qr-invite{margin-top:16px;display:flex;flex-direction:column;align-items:center;animation:fadeIn .3s ease}.qr-invite-code{padding:16px;background:var(--vw-bg);border-radius:var(--vw-radius);border:1px solid var(--vw-separator);display:flex;align-items:center;justify-content:center;color:var(--vw-text)}.qr-invite-instructions{margin-top:12px;font-size:13px;color:var(--vw-hint);text-align:center;line-height:1.5;max-width:260px}.session-item{display:flex;align-items:center;gap:12px;cursor:pointer;transition:all var(--vw-transition)}.session-item:active{transform:scale(.98)}.session-avatar{width:44px;height:44px;border-radius:50%;background:var(--vw-primary-soft);color:var(--vw-primary);display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:700;flex-shrink:0}.typing-indicator{display:flex;gap:4px;align-items:center;padding:4px 0}.typing-dot{width:6px;height:6px;border-radius:50%;background:var(--vw-hint);animation:typingBounce 1.4s ease-in-out infinite}.typing-dot:nth-child(2){animation-delay:.15s}.typing-dot:nth-child(3){animation-delay:.3s}@keyframes typingBounce{0%,60%,to{opacity:.3;transform:translateY(0)}30%{opacity:1;transform:translateY(-4px)}}.icon-btn{width:36px;height:36px;border-radius:50%;border:1px solid var(--vw-separator);background:var(--vw-card-bg);color:var(--vw-hint);display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all var(--vw-transition);flex-shrink:0}.icon-btn:active{background:var(--vw-primary-soft);color:var(--vw-primary);border-color:var(--vw-primary);transform:scale(.92)}.icon-btn svg{width:18px;height:18px}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes slideUp{0%{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}.animate-fade-in{animation:fadeIn .3s ease}.animate-slide-up{animation:slideUp .35s cubic-bezier(.34,1.56,.64,1)}