:root{--bg: #0b0e1a;--bg-elevated: #12162a;--bg-card: rgba(255, 255, 255, .04);--border: rgba(255, 255, 255, .08);--text: #f2f4ff;--text-dim: #8b92b3;--text-faint: #565d7d;--accent-a: #4f6cff;--accent-b: #8c5cff;--accent: #5c74ff;--danger: #ff5470;--online: #2fbf8f;--safe-top: env(safe-area-inset-top, 0px);--safe-bottom: env(safe-area-inset-bottom, 0px)}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}html{height:100%;overscroll-behavior:none;-webkit-text-size-adjust:100%;text-size-adjust:100%;background:var(--bg)}body{position:fixed;top:0;left:0;right:0;height:100%;margin:0;overscroll-behavior:none;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,SF Pro Text,Segoe UI,Roboto,sans-serif;-webkit-font-smoothing:antialiased;overflow:hidden}#app{height:100%;display:flex;flex-direction:column}button{font:inherit;color:inherit;background:none;border:none;padding:0;cursor:pointer;touch-action:manipulation}img,svg{display:block}.screen{flex:1;min-height:0;display:flex;flex-direction:column}.topbar{padding:calc(var(--safe-top) + 10px) 16px 12px;display:flex;align-items:center;gap:12px;border-bottom:1px solid var(--border);background:#0b0e1ad9;backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);flex-shrink:0;z-index:5}.topbar h1{font-size:22px;font-weight:700;margin:0;flex:1}.icon-btn{width:34px;height:34px;display:flex;align-items:center;justify-content:center;border-radius:10px;color:var(--text);transition:background .15s ease,transform .1s ease}.icon-btn:active{background:var(--bg-card);transform:scale(.92)}.search-wrap{padding:8px 16px 4px;flex-shrink:0}.search-box{display:flex;align-items:center;gap:8px;background:var(--bg-card);border:1px solid var(--border);border-radius:12px;padding:9px 12px;color:var(--text-dim)}.search-box input{flex:1;background:none;border:none;outline:none;color:var(--text);font-size:15px;font-family:inherit}.search-box input::placeholder{color:var(--text-faint)}.chat-list{flex:1;overflow-y:auto;-webkit-overflow-scrolling:touch;overscroll-behavior-y:contain;padding-bottom:calc(var(--safe-bottom) + 8px)}.chat-row{display:flex;align-items:center;gap:12px;padding:10px 16px;position:relative;transition:background .12s ease}.chat-row:active{background:#ffffff0d}.avatar{width:52px;height:52px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:600;font-size:17px;color:#fff;flex-shrink:0;position:relative;overflow:hidden}.avatar-img{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%;object-fit:cover;border-radius:50%}.avatar.sm{width:30px;height:30px;font-size:12px}.online-dot{position:absolute;right:-1px;bottom:-1px;width:13px;height:13px;border-radius:50%;background:var(--online);border:2.5px solid var(--bg)}.chat-main{flex:1;min-width:0;display:flex;flex-direction:column;gap:3px}.chat-top-line{display:flex;align-items:baseline;gap:8px}.chat-name{font-size:16px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;flex:1}.chat-time{font-size:13px;color:var(--text-faint);flex-shrink:0}.chat-bottom-line{display:flex;align-items:center;gap:6px}.chat-preview{font-size:14.5px;color:var(--text-dim);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;flex:1;display:flex;align-items:center;gap:4px}.chat-preview .draft{color:var(--danger);font-weight:600}.chat-preview .status-icon{color:var(--text-faint);flex-shrink:0}.unread-badge{min-width:20px;height:20px;padding:0 6px;border-radius:10px;background:var(--accent);color:#fff;font-size:12px;font-weight:700;display:flex;align-items:center;justify-content:center;flex-shrink:0}.muted-dot{color:var(--text-faint);flex-shrink:0}.tabbar{display:flex;border-top:1px solid var(--border);background:#0b0e1ae6;backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);padding-bottom:max(0px,calc(var(--safe-bottom) - 50px));flex-shrink:0}.tab-btn{flex:1;display:flex;flex-direction:column;align-items:center;gap:3px;padding:8px 0 6px;color:var(--text-faint);transition:color .15s ease,transform .1s ease}.tab-btn.active{color:var(--accent)}.tab-btn:active{transform:scale(.94)}.tab-btn span{font-size:10.5px;font-weight:600}.thread-topbar{display:flex;align-items:center;gap:10px}.thread-topbar .peer-meta{display:flex;flex-direction:column;min-width:0}.thread-topbar .peer-name{font-size:16px;font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.thread-topbar .peer-status{font-size:12.5px;color:var(--text-dim)}.thread-scroll{flex:1;min-height:0;overflow-y:auto;-webkit-overflow-scrolling:touch;overscroll-behavior-y:contain;position:relative;padding:10px 12px}.msg-row{display:flex;padding:3px 0}.msg-row.mine{justify-content:flex-end}.bubble{max-width:78%;padding:9px 12px 7px;border-radius:18px;font-size:15.5px;line-height:21px;position:relative;word-wrap:break-word;white-space:pre-wrap}.msg-row:not(.mine) .bubble{background:var(--bg-elevated);border-bottom-left-radius:5px}.msg-row.mine .bubble{background:linear-gradient(135deg,var(--accent-a),var(--accent-b));border-bottom-right-radius:5px;color:#fff}.bubble .reply-strip{display:block;border-left:2.5px solid rgba(255,255,255,.35);padding-left:7px;margin-bottom:4px;font-size:12.5px;opacity:.75}.bubble .meta{display:flex;align-items:center;gap:3px;justify-content:flex-end;margin-top:3px;font-size:11px;opacity:.7}.bubble .meta .status-icon{display:flex}.status-icon.read{color:#7fe0c8}.sticker-wrap{display:flex;flex-direction:column;max-width:148px}.msg-row.mine .sticker-wrap{align-items:flex-end}.sticker-media{width:132px;height:132px;object-fit:contain}.sticker-author{font-size:12.5px;font-weight:600;color:var(--accent);margin-bottom:2px}.sticker-meta{display:flex;align-items:center;gap:3px;font-size:11px;color:var(--text-faint);margin-top:2px}.sticker-picker{position:absolute;bottom:calc(100% + 8px);left:10px;right:10px;max-height:260px;overflow-y:auto;background:var(--bg-elevated);border:1px solid var(--border);border-radius:16px;padding:10px;display:grid;grid-template-columns:repeat(4,1fr);gap:8px;box-shadow:0 12px 32px #00000073}.sticker-picker-item{aspect-ratio:1;border-radius:10px;overflow:hidden;background:var(--bg-card);display:flex;align-items:center;justify-content:center}.sticker-picker-item img,.sticker-picker-item video{width:100%;height:100%;object-fit:contain}.composer{position:relative;display:flex;align-items:flex-end;gap:8px;padding:8px 10px max(8px,calc(var(--safe-bottom) - 50px + 8px));border-top:1px solid var(--border);background:#0b0e1aeb;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);flex-shrink:0}.composer-input{flex:1;background:var(--bg-elevated);border-radius:20px;padding:9px 14px;max-height:120px;overflow-y:auto;color:var(--text);font-size:15.5px;line-height:20px;outline:none;border:1px solid var(--border)}.composer-input:empty:before{content:attr(data-placeholder);color:var(--text-faint)}.composer .icon-btn{flex-shrink:0;color:var(--text-dim)}.send-btn{width:36px;height:36px;border-radius:50%;background:linear-gradient(135deg,var(--accent-a),var(--accent-b));display:flex;align-items:center;justify-content:center;color:#fff;flex-shrink:0;transition:transform .12s ease,opacity .15s ease}.send-btn:active{transform:scale(.9)}.send-btn[disabled]{opacity:.35;pointer-events:none}.empty-state{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;color:var(--text-dim);padding:32px;text-align:center}.empty-state .icon-circle{width:64px;height:64px;border-radius:50%;background:var(--bg-card);display:flex;align-items:center;justify-content:center;color:var(--accent);margin-bottom:4px}.empty-state h2{font-size:17px;margin:0;color:var(--text)}.empty-state p{font-size:14px;margin:0;max-width:260px}.contact-list,.list-scroll{flex:1;overflow-y:auto;-webkit-overflow-scrolling:touch;padding-bottom:calc(var(--safe-bottom) + 8px)}.link-up-btn{padding:7px 14px;border-radius:14px;background:var(--bg-card);border:1px solid var(--border);color:var(--accent);font-size:13.5px;font-weight:600}.profile-header{display:flex;flex-direction:column;align-items:center;gap:10px;padding:24px 16px}.profile-header .avatar{width:88px;height:88px;font-size:28px}.profile-header h2{margin:0;font-size:20px}.section-label{padding:14px 16px 6px;font-size:12.5px;font-weight:700;color:var(--text-faint);text-transform:uppercase;letter-spacing:.4px}.settings-row{display:flex;align-items:center;justify-content:space-between;padding:13px 16px;border-bottom:1px solid var(--border);font-size:15px}.settings-row .value{color:var(--text-dim);font-size:14px}.swipe-actions{position:absolute;right:0;top:0;bottom:0;display:flex}.swipe-actions-left{position:absolute;left:0;top:0;bottom:0;display:flex}.swipe-action{width:72px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;color:#fff;font-size:11.5px;font-weight:600}.swipe-action.archive{background:#4a6dff}.swipe-action.delete{background:var(--danger)}.swipe-action.pin{background:#2fbf8f}.swipe-action.unread{background:#ffb020}.chat-row-wrap{position:relative;overflow:hidden;touch-action:pan-y}.chat-row-slide{position:relative;z-index:1;transition:transform .2s cubic-bezier(.2,.8,.2,1);background:var(--bg)}.ctx-overlay{position:fixed;top:0;right:0;bottom:0;left:0;z-index:40;background:#05060c00;transition:background .18s ease}.ctx-overlay.show{background:#05060c8c;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px)}.ctx-menu{position:fixed;min-width:200px;background:var(--bg-elevated);border:1px solid var(--border);border-radius:14px;overflow:hidden;box-shadow:0 12px 32px #00000073;transform:scale(.9);opacity:0;transition:transform .16s cubic-bezier(.2,.8,.2,1),opacity .16s ease}.ctx-overlay.show .ctx-menu{transform:scale(1);opacity:1}.ctx-item{display:flex;align-items:center;gap:10px;padding:12px 14px;font-size:15px;color:var(--text);border-bottom:1px solid var(--border)}.ctx-item:last-child{border-bottom:none}.ctx-item.danger{color:var(--danger)}.ctx-item:active{background:#ffffff0f}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;z-index:50;display:flex;align-items:center;justify-content:center;padding:24px;background:#05060c00;opacity:0;transition:opacity .18s ease;pointer-events:none}.modal-overlay.show{background:#05060c99;opacity:1;pointer-events:auto}.modal-card{width:100%;max-width:320px;background:var(--bg-elevated);border:1px solid var(--border);border-radius:18px;padding:20px;transform:scale(.92) translateY(8px);transition:transform .18s cubic-bezier(.2,.8,.2,1)}.modal-overlay.show .modal-card{transform:scale(1) translateY(0)}.modal-card h3{margin:0 0 8px;font-size:17px}.modal-card p{margin:0 0 18px;font-size:14.5px;color:var(--text-dim);line-height:1.4}.modal-actions{display:flex;gap:10px}.modal-btn{flex:1;padding:11px 0;border-radius:12px;font-size:15px;font-weight:600;text-align:center}.modal-btn.cancel{background:var(--bg-card);color:var(--text)}.modal-btn.confirm{background:var(--accent);color:#fff}.modal-btn.confirm.danger{background:var(--danger)}.login-screen{flex:1;display:flex;flex-direction:column;justify-content:center;padding:32px 28px calc(32px + var(--safe-bottom));gap:22px}.login-brand{display:flex;flex-direction:column;align-items:center;gap:12px;margin-bottom:8px}.login-brand .mark{width:64px;height:64px;border-radius:20px;background:linear-gradient(135deg,var(--accent-a),var(--accent-b));display:flex;align-items:center;justify-content:center;font-size:24px;font-weight:800;color:#fff}.login-brand h1{margin:0;font-size:22px}.login-field label{display:block;font-size:13px;color:var(--text-dim);margin-bottom:6px}.login-field input{width:100%;background:var(--bg-elevated);border:1px solid var(--border);border-radius:12px;padding:13px 14px;color:var(--text);font-size:16px;outline:none;font-family:inherit}.login-field input:focus{border-color:var(--accent)}.pin-dots{display:flex;justify-content:center;gap:14px;margin:6px 0}.pin-dots .dot{width:16px;height:16px;border-radius:50%;border:1.5px solid var(--text-faint);transition:background .12s ease,border-color .12s ease,transform .12s ease}.pin-dots .dot.filled{background:var(--accent);border-color:var(--accent);transform:scale(1.1)}.pin-dots.error .dot{border-color:var(--danger)}.login-btn{width:100%;padding:13px 0;border-radius:12px;background:linear-gradient(135deg,var(--accent-a),var(--accent-b));color:#fff;font-size:15.5px;font-weight:700;text-align:center;transition:opacity .15s ease,transform .1s ease}.login-btn:active{transform:scale(.98)}.login-btn[disabled]{opacity:.4;pointer-events:none}.login-error{color:var(--danger);font-size:13.5px;text-align:center;min-height:18px}.login-hint{text-align:center;color:var(--text-faint);font-size:12.5px}.update-toast{position:fixed;left:12px;right:12px;bottom:calc(var(--safe-bottom) + 12px);z-index:60;display:flex;align-items:center;gap:12px;background:var(--bg-elevated);border:1px solid var(--border);border-radius:16px;padding:12px 14px;box-shadow:0 12px 32px #00000080;transform:translateY(calc(100% + 24px));opacity:0;transition:transform .22s cubic-bezier(.2,.8,.2,1),opacity .22s ease}.update-toast.show{transform:translateY(0);opacity:1}.update-toast-text{flex:1;display:flex;flex-direction:column;gap:2px;min-width:0}.update-toast-text strong{font-size:14px}.update-toast-text span{font-size:12.5px;color:var(--text-dim);line-height:1.35}.update-toast-btn{flex-shrink:0;padding:9px 14px;border-radius:12px;background:linear-gradient(135deg,var(--accent-a),var(--accent-b));color:#fff;font-size:13.5px;font-weight:700}