:root{color-scheme:light dark;--bg: #F4F2FA;--card: #FFFFFF;--text: #2D2D3F;--text-secondary: #6B6B80;--text-muted: #9D9DB0;--border: #E8E6F0;--divider: #F0EEF5;--primary: #6C5CE7;--primary-dark: #5A4BD1;--primary-light: #8577ED;--primary-bg: #EEEAFF;--success: #059669;--success-bg: #ECFDF5;--error: #DC2626;--error-bg: #FEF2F2;--warning: #D97706;--bubble-me-bg: #EEEAFF;--bubble-me-text: #2D2D3F;--bubble-me-translation: #6B6B80;--bubble-them-bg: #FFFFFF;--bubble-them-text: #2D2D3F;--bubble-them-translation: #6B6B80;--recording-red: #DC2626;--r-sm: 8px;--r-md: 12px;--r-lg: 16px;--r-xl: 20px;--r-full: 9999px;--shadow-sm: 0 1px 3px rgba(45, 45, 63, .05);--shadow-md: 0 4px 12px rgba(45, 45, 63, .07);--shadow-lg: 0 8px 24px rgba(45, 45, 63, .1);--font: -apple-system, BlinkMacSystemFont, "SF Pro Text", system-ui, sans-serif;--max-width: 430px;--header-h: 56px;--nav-h: 60px;--safe-top: env(safe-area-inset-top, 0px);--safe-bottom: env(safe-area-inset-bottom, 0px)}@media(prefers-color-scheme:dark){:root{--bg: #14141A;--card: #1E1E27;--text: #ECECF2;--text-secondary: #B4B4C2;--text-muted: #80808F;--border: #2E2E3B;--divider: #25252F;--primary: #8577ED;--primary-dark: #6C5CE7;--primary-light: #A99EF2;--primary-bg: #2A2542;--success: #34D399;--success-bg: #0E2C24;--error: #F87171;--error-bg: #361D1D;--warning: #FBBF24;--bubble-me-bg: #3A3170;--bubble-me-text: #ECECF2;--bubble-me-translation: #B4B4C2;--bubble-them-bg: #1E1E27;--bubble-them-text: #ECECF2;--bubble-them-translation: #B4B4C2;--recording-red: #F87171;--shadow-sm: 0 1px 3px rgba(0, 0, 0, .3);--shadow-md: 0 4px 12px rgba(0, 0, 0, .4);--shadow-lg: 0 8px 24px rgba(0, 0, 0, .5)}}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{height:100%;-webkit-text-size-adjust:100%;scroll-behavior:smooth}body{font-family:var(--font);font-size:15px;line-height:1.5;color:var(--text);background:var(--bg);height:100%;overflow:hidden;-webkit-tap-highlight-color:transparent;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}#app{max-width:var(--max-width);margin:0 auto;height:100%;display:flex;flex-direction:column;position:relative;background:var(--bg)}input,textarea,select,button{font-family:inherit;font-size:inherit}.header{height:var(--header-h);padding:0 16px;padding-top:var(--safe-top);display:flex;align-items:center;gap:12px;background:var(--card);border-bottom:1px solid var(--border);flex-shrink:0;z-index:10}.header__title{font-size:17px;font-weight:700;flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;letter-spacing:-.2px}.header__subtitle{font-size:12px;color:var(--text-muted);font-weight:400}.header__back{width:36px;height:36px;border-radius:50%;border:none;background:var(--divider);display:flex;align-items:center;justify-content:center;cursor:pointer;flex-shrink:0;transition:transform .15s,background .2s}.header__back:hover{background:var(--border)}.header__back:active{transform:scale(.9)}.header__back svg{width:20px;height:20px;stroke:var(--text)}.header__action{width:36px;height:36px;border-radius:50%;border:none;background:transparent;display:flex;align-items:center;justify-content:center;cursor:pointer;flex-shrink:0;transition:background .2s}.header__action:hover{background:var(--divider)}.header__action svg{width:18px;height:18px;color:var(--text-secondary)}.nav{display:flex;background:var(--card);border-top:1px solid var(--border);padding-bottom:var(--safe-bottom);flex-shrink:0;z-index:10}.nav__item{flex:1;display:flex;flex-direction:column;align-items:center;gap:2px;padding:8px 0;border:none;background:none;color:var(--text-muted);font-size:11px;font-weight:500;cursor:pointer;transition:color .2s;position:relative}.nav__item svg{width:24px;height:24px}.nav__item.active{color:var(--primary)}.nav__item.active:before{content:"";position:absolute;top:0;left:50%;transform:translate(-50%);width:24px;height:2px;background:var(--primary);border-radius:0 0 2px 2px}.nav__item:active{transform:scale(.95)}.main{flex:1;overflow-y:auto;-webkit-overflow-scrolling:touch}.main--padded{padding:16px}.card{background:var(--card);border-radius:var(--r-lg);box-shadow:var(--shadow-sm);padding:20px;margin-bottom:12px;animation:fadeIn .3s ease;border:1px solid var(--divider)}.form-group{margin-bottom:16px}.form-label{display:block;font-size:13px;font-weight:600;color:var(--text-secondary);margin-bottom:6px;text-transform:uppercase;letter-spacing:.5px}.form-input,.form-textarea,.form-select{width:100%;height:44px;padding:10px 14px;border:1.5px solid var(--border);border-radius:var(--r-md);background:var(--card);color:var(--text);font-size:15px;transition:border-color .2s,box-shadow .2s;outline:none}.form-input:focus,.form-textarea:focus,.form-select:focus{border-color:var(--primary);box-shadow:0 0 0 3px #2563eb1a}.form-textarea{height:auto;resize:vertical;min-height:80px}.form-input::placeholder,.form-textarea::placeholder{color:var(--text-muted)}.form-hint{font-size:12px;color:var(--text-muted);margin-top:4px;line-height:1.4}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 24px;min-height:44px;border-radius:var(--r-md);border:none;font-size:15px;font-weight:600;cursor:pointer;transition:transform .15s,opacity .15s,background .2s,box-shadow .2s;-webkit-user-select:none;user-select:none}.btn:active{transform:scale(.97)}.btn:disabled{opacity:.5;pointer-events:none}.btn--primary{background:var(--primary);color:#fff}.btn--primary:hover{background:var(--primary-dark)}.btn--secondary{background:var(--card);color:var(--text);border:1.5px solid var(--border)}.btn--secondary:hover{background:var(--divider)}.btn--danger{background:var(--error);color:#fff}.btn--danger:hover{background:#b91c1c}.btn--full{width:100%}.btn--sm{padding:8px 16px;min-height:36px;font-size:13px}.sync-ind{height:28px;min-width:28px;border-radius:var(--r-full);border:none;display:flex;align-items:center;gap:4px;padding:0 8px;cursor:pointer;font-size:13px;font-weight:600;transition:background .3s,color .3s,opacity .3s;flex-shrink:0}.sync-ind:active{transform:scale(.9)}.sync-ind--idle{background:var(--primary-bg);color:var(--primary);opacity:.7}.sync-ind--syncing{background:var(--primary-bg);color:var(--primary);opacity:1}.sync-ind--success{background:var(--success-bg);color:var(--success);opacity:1}.sync-ind--error,.sync-ind--reauth-needed{background:var(--error-bg);color:var(--error);opacity:1}.sync-ind__icon{display:flex;align-items:center;line-height:1}.sync-ind__icon--spin{animation:sync-spin 1s linear infinite}.sync-ind__text{font-size:11px}@keyframes sync-spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.fab{position:fixed;bottom:calc(var(--nav-h) + var(--safe-bottom) + 16px);right:calc(50% - var(--max-width) / 2 + 16px);width:56px;height:56px;border-radius:50%;background:var(--primary);color:#fff;border:none;box-shadow:var(--shadow-lg),0 2px 8px #2563eb4d;display:flex;align-items:center;justify-content:center;cursor:pointer;z-index:5;transition:transform .15s,box-shadow .2s}.fab:hover{box-shadow:var(--shadow-lg),0 4px 16px #2563eb66}.fab:active{transform:scale(.9)}.fab svg{width:28px;height:28px}@media(max-width:462px){.fab{right:16px}}.empty{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:60px 24px;text-align:center;color:var(--text-muted)}.empty__icon{font-size:48px;margin-bottom:16px;opacity:.5}.empty__icon svg{width:48px;height:48px}.empty__text{font-size:16px;margin-bottom:20px;font-weight:500}.dialog-row{display:flex;align-items:center;gap:12px;padding:14px 16px;background:var(--card);border-radius:var(--r-lg);box-shadow:var(--shadow-sm);border:1px solid var(--divider);margin-bottom:8px;cursor:pointer;transition:transform .15s,box-shadow .2s;animation:fadeIn .3s ease}.dialog-row:active{transform:scale(.98)}.dialog-row__avatar{width:48px;height:48px;border-radius:50%;background:var(--primary-bg);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:20px;font-weight:700;flex-shrink:0}.dialog-row__body{flex:1;min-width:0}.dialog-row__name{font-weight:600;font-size:15px;margin-bottom:2px;color:var(--text)}.dialog-row__preview{font-size:13px;color:var(--text-muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.dialog-row__meta{text-align:right;flex-shrink:0}.dialog-row__time{font-size:12px;color:var(--text-muted);font-weight:500}.dialog-row__delete{width:28px;height:28px;border-radius:50%;border:none;background:none;color:var(--error);display:flex;align-items:center;justify-content:center;cursor:pointer;flex-shrink:0;opacity:.6;transition:opacity .15s,background .15s}.dialog-row__delete svg{width:16px;height:16px}.dialog-row__delete:hover{opacity:.9}.dialog-row__delete:active{opacity:1;background:var(--error-bg)}.dialog-row__incoming{color:var(--primary);font-weight:700;font-size:14px}.contact-card{display:flex;align-items:center;gap:12px;padding:16px;background:var(--card);border-radius:var(--r-lg);box-shadow:var(--shadow-sm);border:1px solid var(--divider);margin-bottom:8px;cursor:pointer;transition:transform .15s,box-shadow .2s;animation:fadeIn .3s ease}.contact-card:active{transform:scale(.98)}.contact-card__avatar{width:44px;height:44px;border-radius:50%;background:var(--primary-bg);color:var(--primary);display:flex;align-items:center;justify-content:center;font-size:18px;font-weight:700;flex-shrink:0}.contact-card__info{flex:1;min-width:0}.contact-card__name{font-weight:600;font-size:15px;color:var(--text)}.contact-card__detail{font-size:13px;color:var(--text-muted)}.chat-container{display:flex;flex-direction:column;height:100%}.chat-messages{flex:1;overflow-y:auto;-webkit-overflow-scrolling:touch;padding:12px 12px 8px}.message{max-width:85%;margin-bottom:10px;animation:fadeIn .25s ease;position:relative}.message--me{margin-left:auto}.message--them{margin-right:auto}.message__sender{font-size:11px;font-weight:600;color:var(--text-muted);margin-bottom:2px;padding:0 4px}.message__content{display:flex;align-items:flex-end;gap:6px}.message__content .message__bubble{flex:1;min-width:0}.msg-qbtn{width:26px;height:26px;border-radius:50%;border:none;background:var(--divider);color:var(--text-secondary);display:flex;align-items:center;justify-content:center;cursor:pointer;padding:0;flex-shrink:0;opacity:.4;transition:opacity .15s,background .15s,color .15s,transform .15s}.msg-qbtn svg{width:14px;height:14px}.msg-qbtn:hover{opacity:.8;background:var(--primary-bg);color:var(--primary)}.msg-qbtn:active{opacity:1;background:var(--primary-bg);color:var(--primary);transform:scale(.9)}.msg-qbtn:disabled{cursor:default}.msg-qbtn.is-loading{opacity:.8;background:var(--primary-bg);color:var(--primary);animation:msg-qbtn-pulse 1s ease-in-out infinite}@keyframes msg-qbtn-pulse{0%,to{opacity:.5}50%{opacity:1}}.message__explanation{margin-top:6px;padding:8px 12px;background:var(--primary-bg, rgba(99, 102, 241, .08));border-left:3px solid var(--primary);border-radius:var(--r-sm, 6px);font-size:13px;line-height:1.45}.message__explanation-label{font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:.5px;color:var(--primary);margin-bottom:4px}.message__explanation-text{color:var(--text-primary);white-space:pre-wrap;word-break:break-word}.message__explanation-text--loading{font-style:italic;opacity:.6}.message__bubble{padding:10px 14px;border-radius:var(--r-lg);position:relative}.message--me .message__bubble{background:var(--bubble-me-bg);color:var(--bubble-me-text);border-bottom-right-radius:4px}.message--them .message__bubble{background:var(--bubble-them-bg);color:var(--bubble-them-text);border-bottom-left-radius:4px;box-shadow:var(--shadow-sm);border:1px solid var(--divider)}.message__original{font-size:15px;line-height:1.45;word-break:break-word}.message__translation{font-size:13px;margin-top:6px;padding-top:6px;line-height:1.4;word-break:break-word}.message--me .message__translation{color:var(--bubble-me-translation);border-top:1px solid rgba(0,0,0,.06)}.message--them .message__translation{color:var(--bubble-them-translation);border-top:1px solid var(--border)}.message__translation--loading{font-style:italic;opacity:.6}.message__time{font-size:10px;color:var(--text-muted);margin-top:4px;padding:0 4px}.message--me .message__time{text-align:right}.message__edited{font-size:10px;color:var(--text-muted);font-style:italic}.message__actions{display:none;position:absolute;top:-8px;gap:4px;z-index:5}.message--me .message__actions{left:-8px;flex-direction:row-reverse}.message--them .message__actions{right:-8px}.message.show-actions .message__actions{display:flex}.message__action-btn{width:28px;height:28px;border-radius:50%;border:none;display:flex;align-items:center;justify-content:center;cursor:pointer;font-size:13px;box-shadow:var(--shadow-md);transition:transform .15s}.message__action-btn:active{transform:scale(.9)}.message__action-btn--edit{background:var(--card);color:var(--text-secondary)}.message__action-btn--delete{background:var(--error-bg);color:var(--error)}.chat-input-bar{padding:8px 12px;padding-bottom:calc(8px + var(--safe-bottom));background:var(--card);border-top:1px solid var(--border);flex-shrink:0}.speaker-toggle{display:flex;background:var(--divider);border-radius:var(--r-full);padding:3px;margin-bottom:8px;position:relative}.speaker-toggle__option{flex:1;padding:6px 12px;text-align:center;font-size:13px;font-weight:600;color:var(--text-muted);border:none;background:none;cursor:pointer;border-radius:var(--r-full);transition:color .25s;z-index:1;position:relative}.speaker-toggle__option.active{color:#fff}.speaker-toggle__slider{position:absolute;top:3px;left:3px;width:calc(50% - 3px);height:calc(100% - 6px);background:var(--primary);border-radius:var(--r-full);transition:transform .25s ease;box-shadow:0 1px 3px #2563eb4d}.speaker-toggle--me .speaker-toggle__slider{transform:translate(100%)}.input-row{display:flex;align-items:flex-end;gap:8px}.input-row__field{flex:1;min-height:40px;max-height:120px;padding:10px 14px;border:1.5px solid var(--border);border-radius:var(--r-xl);background:var(--bg);color:var(--text);font-size:15px;line-height:1.4;resize:none;outline:none;overflow-y:auto;transition:border-color .2s,box-shadow .2s}.input-row__field:focus{border-color:var(--primary);box-shadow:0 0 0 3px #2563eb14}.input-row__field::placeholder{color:var(--text-muted)}.input-btn{width:40px;height:40px;border-radius:50%;border:none;display:flex;align-items:center;justify-content:center;cursor:pointer;flex-shrink:0;transition:transform .15s,background .2s}.input-btn:active{transform:scale(.9)}.input-btn--mic{background:var(--divider);color:var(--text-secondary)}.input-btn--mic:hover{background:var(--border)}.input-btn--mic.recording{background:var(--recording-red);color:#fff;animation:pulse 1.2s ease infinite}.input-btn--send{background:var(--primary);color:#fff}.input-btn--send:hover{background:var(--primary-dark)}.input-btn--send:disabled{background:var(--border);color:var(--text-muted)}.input-btn svg{width:20px;height:20px}.recording-indicator{display:none;align-items:center;gap:8px;padding:8px 0;font-size:13px;color:var(--recording-red);font-weight:600}.recording-indicator.active{display:flex}.recording-dot{width:10px;height:10px;border-radius:50%;background:var(--recording-red);animation:pulse 1.2s ease infinite}.recording-indicator__cancel{margin-left:auto;background:none;border:none;color:var(--text-muted);font-size:13px;font-weight:500;cursor:pointer;padding:4px 8px;border-radius:var(--r-sm);transition:background .15s}.recording-indicator__cancel:hover{background:var(--divider)}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0006;z-index:100;display:flex;align-items:flex-end;justify-content:center;animation:fadeIn .2s ease;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.modal{background:var(--card);border-radius:var(--r-xl) var(--r-xl) 0 0;width:100%;max-width:var(--max-width);max-height:70vh;overflow-y:auto;padding:20px 16px;padding-bottom:calc(20px + var(--safe-bottom));animation:slideUp .3s ease}.modal__title{font-size:17px;font-weight:700;margin-bottom:16px;color:var(--text)}.modal__close{position:absolute;top:16px;right:16px;width:32px;height:32px;border-radius:50%;border:none;background:var(--divider);cursor:pointer;font-size:18px;display:flex;align-items:center;justify-content:center;transition:background .15s}.modal__close:hover{background:var(--border)}.toast{position:fixed;top:calc(16px + var(--safe-top));left:50%;transform:translate(-50%);max-width:calc(var(--max-width) - 32px);padding:12px 24px;border-radius:var(--r-full);font-size:14px;font-weight:500;z-index:200;animation:slideDown .3s ease;pointer-events:none;box-shadow:var(--shadow-md)}.toast--error{background:var(--error);color:#fff}.toast--success{background:var(--success);color:#fff}.message__edit-area{width:100%;padding:8px 12px;border:1.5px solid var(--primary);border-radius:var(--r-sm);font-size:14px;font-family:inherit;resize:none;min-height:60px;outline:none;margin-bottom:6px;background:var(--card);color:var(--text);box-shadow:0 0 0 3px #2563eb1a}.message__edit-actions{display:flex;gap:6px;justify-content:flex-end}.banner{padding:12px 16px;margin:8px 12px;border-radius:var(--r-md);font-size:13px;font-weight:500;display:flex;align-items:center;gap:8px}.banner--warning{background:#fef3c7;color:#92400e}.banner a{color:inherit;font-weight:600;text-decoration:underline;text-underline-offset:2px}@keyframes fadeIn{0%{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}@keyframes slideUp{0%{transform:translateY(100%)}to{transform:translateY(0)}}@keyframes slideDown{0%{opacity:0;transform:translate(-50%,-16px)}to{opacity:1;transform:translate(-50%)}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0);border:0}.hidden{display:none!important}.chat-messages::-webkit-scrollbar{width:4px}.chat-messages::-webkit-scrollbar-track{background:transparent}.chat-messages::-webkit-scrollbar-thumb{background:var(--border);border-radius:2px}.main::-webkit-scrollbar{width:4px}.main::-webkit-scrollbar-track{background:transparent}.main::-webkit-scrollbar-thumb{background:var(--border);border-radius:2px}@media(prefers-color-scheme:dark){.banner--warning{background:#3a2e0a;color:#fbbf24}.message--me .message__translation{border-top-color:#ffffff1a}.modal-overlay{background:#0009}}