:root{--bg: #ffffff;--surface: #f6f7f9;--surface-2: #ebedf0;--surface-3: #e2e5ea;--accent: #0DBD8E;--accent-hover: #0aa67e;--accent-deep: #093b34;--accent-tint: #e2f7f1;--on-accent: #ffffff;--text: #1e2329;--text-muted: #6a737d;--text-faint: #aab2bd;--border: #e4e7ec;--bubble-other: #ffffff;--bubble-own: #e2f7f1;--danger: #e74c3c;--danger-tint: #fdecea;--warn: #b9770e;--warn-tint: #fef5e7;--success: #16a085;--shadow-sm: 0 1px 2px rgba(16,24,40,.06);--shadow-md: 0 8px 24px rgba(16,24,40,.12);--shadow-lg: 0 24px 64px rgba(16,24,40,.18);--radius: 10px;--radius-sm: 6px;--radius-lg: 16px;--serif-display: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", Palatino, serif}body.dark{--bg: #1a1d21;--surface: #121418;--surface-2: #1e2127;--surface-3: #282c34;--accent-tint: #0e3a32;--on-accent: #e0e3e8;--text: #d8dce2;--text-muted: #868e9b;--text-faint: #545b66;--border: #2a2f36;--bubble-other: #1e2127;--bubble-own: #0e3a32;--danger-tint: #301a1a;--warn-tint: #30240e;--shadow-sm: 0 1px 2px rgba(0,0,0,.35);--shadow-md: 0 8px 24px rgba(0,0,0,.45);--shadow-lg: 0 24px 64px rgba(0,0,0,.55)}*{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,Roboto,Helvetica,Arial,sans-serif;color:var(--text);background:var(--surface);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}button{font:inherit;cursor:pointer;border:1px solid var(--border);background:var(--bg);color:var(--text);border-radius:var(--radius-sm);padding:7px 14px;transition:background .12s,border-color .12s,color 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55%,#d3ebe6);padding:24px}.login-form{width:100%;max-width:880px;min-height:460px;display:grid;grid-template-columns:1fr;background:var(--bg);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);overflow:hidden}@media(min-width:760px){.login-form{grid-template-columns:1.05fr 1fr}}.login-brand{background:linear-gradient(160deg,var(--accent-deep) 0%,#0b4f47 55%,#0DBD8E 140%);color:#eafaf4;padding:40px 36px;display:flex;flex-direction:column;gap:14px;justify-content:center}.login-mark{width:52px;height:52px;border-radius:14px;background:#ffffff1f;display:grid;place-items:center;color:#d6f5ec}.login-brand-name{font-family:var(--serif-display);font-size:24px;font-weight:600;letter-spacing:-.01em;color:#fff}.login-brand-tag{margin:0;font-size:14px;color:#c9ece3;line-height:1.5}.login-brand-points{list-style:none;margin:8px 0 0;padding:0;display:flex;flex-direction:column;gap:8px}.login-brand-points li{font-size:13px;color:#b8e4d8;padding-left:18px;position:relative}.login-brand-points li:before{content:"";position:absolute;left:0;top:7px;width:7px;height:7px;border-radius:50%;background:var(--accent)}@media(max-width:760px){.login-brand{display:none}}.login-fields{padding:44px 40px;display:flex;flex-direction:column;gap:16px;align-self:center;width:100%;justify-content:center}.login-fields h1{font-family:var(--serif-display);font-weight:600;font-size:26px;letter-spacing:-.01em;margin:0}.login-sub{margin:-8px 0 8px;font-size:13px;color:var(--text-muted)}.login-fields .error{background:var(--danger-tint);color:var(--danger);border-radius:var(--radius-sm);padding:10px 12px;font-size:13px}.login-fields label span{display:block;font-size:12px;font-weight:600;color:var(--text-muted);letter-spacing:.04em;text-transform:uppercase;margin-bottom:6px}.login-fields label>input{margin-top:0}.login-fields button[type=submit]{margin-top:6px;padding:11px 16px}.main-shell{display:flex;height:100vh;height:100dvh;overflow:hidden;background:var(--bg)}.sidebar{width:var(--sidebar-width, 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10px;border-radius:var(--radius-sm);cursor:pointer;transition:background .1s}.room-list li:hover{background:var(--surface-2)}.room-list li.active{background:var(--accent-tint)}.room-avatar{width:38px;height:38px;border-radius:var(--radius);background:var(--accent);display:grid;place-items:center;color:var(--on-accent);font-weight:600;font-size:15px;flex-shrink:0;overflow:hidden;object-fit:cover}.room-avatar.no-img{background:linear-gradient(135deg,#0dbd8e,#0b4f47)}.room-meta{flex:1;min-width:0}.room-name{font-size:14px;font-weight:500;color:var(--text);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.room-last{font-size:12px;color:var(--text-faint);margin-top:2px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.enc-badge{font-size:11px;color:var(--accent-hover)}.user-avatar-wrap{position:relative}.user-avatar{width:38px;height:38px;border-radius:var(--radius);background:var(--accent);display:grid;place-items:center;color:var(--on-accent);font-weight:600;font-size:15px;flex-shrink:0;overflow:hidden;object-fit:cover;cursor:pointer;transition:opacity 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.upload-btn:hover{background:var(--surface-2);color:var(--accent-hover)}.message-input button[type=submit]{width:auto;padding:9px 18px}.emoji-btn{width:36px;height:36px;padding:0;display:grid;place-items:center;font-size:18px;border-radius:50%;border:1px solid var(--border);background:var(--bg);color:var(--text-muted)}.emoji-btn:hover{background:var(--surface-2)}.emoji-picker{position:absolute;bottom:44px;left:0;z-index:100;width:280px;max-height:200px;overflow-y:auto;display:flex;flex-wrap:wrap;gap:2px;padding:8px;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-md)}.emoji-item{width:34px;height:34px;padding:0;display:grid;place-items:center;font-size:20px;border:none;background:transparent;border-radius:var(--radius-sm);cursor:pointer}.emoji-item:hover{background:var(--surface-2)}.decrypt-banner{display:flex;flex-wrap:wrap;align-items:center;gap:10px;padding:10px 16px;background:var(--warn-tint);border-bottom:1px solid #f3d79e;color:var(--warn);font-size:13px}.decrypt-banner>span{flex:1;min-width:200px;font-weight:500}.decrypt-banner button{border-color:var(--warn);color:var(--warn);background:transparent;padding:5px 12px;font-size:12px}.decrypt-banner button:hover{background:var(--warn);color:var(--on-accent)}.decrypt-banner form.inline{display:flex;gap:6px;align-items:center;flex-basis:100%}.decrypt-banner form.inline input{padding:6px 10px;font-size:13px}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;z-index:1000;background:#10182873;display:grid;place-items:center;padding:24px;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px)}.modal{width:100%;max-width:480px;max-height:86vh;background:var(--bg);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);display:flex;flex-direction:column}.modal.verification-modal{max-width:420px}.modal.settings-modal{max-width:560px}.modal header,.modal>header{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid var(--border)}.modal header h2,.modal h2,.modal h3{margin:0;font-size:16px;font-weight:600}.modal header button,.modal h2+button,.modal h3+button{width:30px;height:30px;padding:0;line-height:1;border-radius:50%;border:none;background:transparent;color:var(--text-muted);font-size:20px}.modal header button:hover,.modal h2+button:hover{background:var(--surface-2);color:var(--text)}.modal section,.modal>section{padding:18px 20px;overflow-y:auto}.modal h3{font-size:13px;text-transform:uppercase;letter-spacing:.06em;color:var(--text-muted);margin:18px 0 10px}.modal h3:first-child,.modal h4:first-child{margin-top:0}.modal h4{font-size:13px;color:var(--text-muted);margin:14px 0 8px;font-weight:600}.modal ul{list-style:none;margin:0;padding:0}.modal label{font-size:13px;color:var(--text-muted);margin-bottom:6px}.modal footer{padding:12px 20px;border-top:1px solid var(--border);display:flex;gap:8px;justify-content:flex-end}.verification-modal h3{margin-top:0}.sas-emoji-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin:14px 0}.sas-emoji{background:var(--accent-tint);border-radius:var(--radius);padding:10px 6px;text-align:center;display:flex;flex-direction:column;align-items:center;gap:4px}.sas-emoji .emoji{font-size:26px;line-height:1.1}.sas-emoji .name{font-size:11px;color:var(--accent-deep)}.sas-numbers{text-align:center;font-family:ui-monospace,SF Mono,Menlo,monospace;font-size:20px;letter-spacing:.14em;color:var(--text);margin:6px 0 14px}.verification-modal button{margin-right:8px}.warn{background:var(--warn-tint);border:1px solid #f3d79e;border-radius:var(--radius);padding:12px 14px;color:var(--warn);font-size:13px;margin-bottom:14px}.warn form.inline{display:flex;gap:6px;margin-top:8px;align-items:center}.warn form.inline input{flex:1;padding:7px 10px;font-size:13px}.warn .error{margin-top:6px}.device-list{display:flex;flex-direction:column;gap:8px;margin:6px 0 16px}.device-list li{display:grid;grid-template-columns:1fr auto;gap:4px 10px;padding:10px 12px;border:1px solid var(--border);border-radius:var(--radius);align-items:center}.device-list li button{grid-row:span 2;padding:5px 10px;font-size:12px}.device-actions{grid-row:span 2;display:flex;gap:4px;align-items:flex-start}.device-list li>div:first-child{font-weight:500;font-size:13px}.device-id{font-family:ui-monospace,SF Mono,Menlo,monospace;font-size:11px;color:var(--text-faint)}.trust{font-size:12px}.device-list li.unverified .trust{color:var(--danger)}.device-list li.verified .trust,.device-list li.cross-signed-verified .trust{color:var(--success)}.chat-info-btn{margin-left:auto;width:30px;height:30px;padding:0;border-radius:50%;border:none;background:transparent;color:var(--text-muted);font-size:18px;line-height:1}.chat-info-btn:hover{background:var(--surface-2);color:var(--text)}.chat-panel{position:relative}.room-drawer{position:absolute;top:0;right:0;bottom:0;z-index:200;width:380px;max-width:100%;background:var(--bg);border-left:1px solid var(--border);display:flex;flex-direction:column}.room-drawer header{display:flex;align-items:center;gap:6px;padding:16px 20px;border-bottom:1px solid var(--border)}.room-drawer header h2{margin:0;font-size:15px;font-weight:600;flex:1}.room-drawer header button{width:30px;height:30px;padding:0;line-height:1;border-radius:50%;border:none;background:transparent;color:var(--text-muted);font-size:18px}.room-drawer header button:hover{background:var(--surface-2);color:var(--text)}.room-drawer section{padding:16px 20px;overflow-y:auto;flex:1}.drawer-back{font-size:16px!important}.drawer-field{margin-bottom:16px}.drawer-field label{display:block;font-size:12px;font-weight:600;color:var(--text-muted);letter-spacing:.04em;text-transform:uppercase;margin-bottom:6px}.drawer-value{font-size:14px;color:var(--text);word-break:break-all}.drawer-edit-row{display:flex;gap:6px;align-items:center}.drawer-edit-row input{flex:1;padding:8px 10px;font-size:13px}.drawer-edit-row button{padding:6px 10px;font-size:12px;white-space:nowrap}.drawer-edit-btn{padding:4px 8px!important;font-size:11px!important}.drawer-room-avatar{width:64px;height:64px;border-radius:var(--radius);background:var(--accent);display:grid;place-items:center;color:var(--on-accent);font-weight:600;font-size:22px;flex-shrink:0;overflow:hidden;object-fit:cover}.drawer-room-avatar.no-img{background:linear-gradient(135deg,#0dbd8e,#0b4f47)}.drawer-room-avatar-sm{width:48px;height:48px;font-size:18px}.drawer-member-list{list-style:none;margin:6px 0 0;padding:0}.drawer-member-list li{display:flex;align-items:center;gap:8px;padding:7px 8px;border-radius:var(--radius-sm);font-size:13px}.drawer-member-list li:hover{background:var(--surface)}.member-avatar{width:28px;height:28px;border-radius:var(--radius);background:var(--accent);color:var(--on-accent);display:grid;place-items:center;font-size:12px;font-weight:600;flex-shrink:0}.member-name{flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.member-badge{font-size:10px;color:var(--accent);background:var(--accent-tint);padding:1px 6px;border-radius:999px}.member-more{color:var(--text-muted);font-style:italic}.drawer-actions{margin-top:16px}.drawer-action-btn{width:100%;padding:10px 14px;font-size:13px;text-align:left;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--bg);color:var(--text)}.drawer-action-btn:hover{background:var(--surface-2)}.drawer-action-btn.danger{border-color:var(--danger);color:var(--danger)}.drawer-action-btn.danger:hover{background:var(--danger-tint)}.drawer-tabs{display:flex;overflow-x:auto;gap:0;border-bottom:1px solid var(--border);padding:0 12px}.drawer-tab{padding:10px 12px;font-size:12px;white-space:nowrap;border:none;border-bottom:2px solid transparent;background:transparent;color:var(--text-muted);cursor:pointer}.drawer-tab:hover{color:var(--text);background:transparent}.drawer-tab.active{color:var(--accent);border-bottom-color:var(--accent);font-weight:600}.drawer-save-btn{width:100%;padding:10px;font-size:13px;font-weight:600;margin-top:8px}.drawer-hint{font-size:12px;color:var(--text-faint);margin:6px 0;line-height:1.5}.drawer-mono{font-family:ui-monospace,SF Mono,Menlo,monospace;font-size:12px}.drawer-perms{list-style:none;margin:4px 0 0;padding:0}.drawer-perms li{display:flex;justify-content:space-between;gap:8px;padding:4px 0;font-size:13px;border-bottom:1px solid var(--border)}.perm-user{color:var(--text);flex:1}.perm-level{color:var(--text-muted);font-family:monospace}.toast{padding:8px 12px;font-size:13px;border-radius:var(--radius-sm);background:var(--accent-tint);color:var(--accent-deep);margin-bottom:12px}.toast.error{background:var(--danger-tint);color:var(--danger)}.notif-badge{display:inline-flex;align-items:center;justify-content:center;min-width:18px;height:18px;border-radius:9px;background:var(--surface-3);color:var(--text);font-size:11px;font-weight:600;padding:0 5px;flex-shrink:0}.notif-badge.notif-highlight{background:var(--danger);color:#fff}.room-list li.has-unread .room-name{font-weight:700}.room-list li.has-highlight .room-name{color:var(--danger);font-weight:700}.mobile-menu-btn{width:36px;height:36px;padding:0;border:none;background:transparent;color:var(--text-muted);font-size:22px;cursor:pointer;border-radius:var(--radius-sm);flex-shrink:0}.mobile-menu-btn:hover{background:var(--surface-2);color:var(--text)}.mobile-close-btn{margin-left:auto;width:30px;height:30px;padding:0;border:none;background:transparent;color:var(--text-muted);font-size:20px;cursor:pointer;border-radius:50%;flex-shrink:0}.mobile-close-btn:hover{background:var(--surface-2);color:var(--text)}.sidebar-overlay{display:none;position:fixed;top:0;right:0;bottom:0;left:0;background:#10182873;z-index:200}.main-shell.mobile .sidebar{position:fixed;top:0;left:0;bottom:0;z-index:300;width:80vw;max-width:320px;box-shadow:var(--shadow-lg);transition:none}.main-shell.mobile .sidebar{display:none}.main-shell.mobile .sidebar.mobile.open{display:flex}.main-shell.mobile .sidebar .sidebar-separator{display:none}.main-shell.mobile .chat-panel{flex:1}.dialog-overlay{position:fixed;top:0;right:0;bottom:0;left:0;z-index:1100;background:#1018288c;display:grid;place-items:center;padding:24px;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px)}.dialog{width:100%;max-width:400px;background:var(--bg);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);display:flex;flex-direction:column}.dialog header{display:flex;align-items:center;justify-content:space-between;padding:14px 18px;border-bottom:1px solid var(--border)}.dialog header h3{margin:0;font-size:15px;font-weight:600}.dialog header .close-btn{width:28px;height:28px;padding:0;line-height:1;border-radius:50%;border:none;background:transparent;color:var(--text-muted);font-size:18px}.dialog header .close-btn:hover{background:var(--surface-2);color:var(--text)}.dialog section{padding:16px 18px}.dialog section p{margin:0 0 12px;font-size:14px;color:var(--text)}.dialog footer{padding:12px 18px;border-top:1px solid var(--border);display:flex;gap:8px;justify-content:flex-end}.dialog footer button{padding:7px 16px;font-size:13px}.dialog-error{background:#ffe8e8;border:1px solid #eebaba;border-radius:var(--radius);padding:8px 12px;color:var(--danger);font-size:13px;margin-bottom:10px}.dialog section input[type=password]{width:100%;padding:10px 14px;font-size:14px;border:1px solid var(--border);border-radius:var(--radius);background:var(--bg);color:var(--text);box-sizing:border-box}.dialog section input[type=password]:focus{border-color:var(--accent);outline:none;box-shadow:0 0 0 2px var(--accent-tint)}.device-meta{font-size:12px;color:var(--text-muted);display:flex;flex-wrap:wrap;gap:4px}.device-meta .dot{color:var(--text-faint)}.new-login-toasts{position:fixed;top:12px;left:50%;transform:translate(-50%);z-index:1200;display:flex;flex-direction:column;gap:8px;width:100%;max-width:480px}.new-login-toast{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);padding:14px 18px;animation:slideDown .25s ease}.new-login-toast .nl-title{font-weight:600;font-size:14px;margin-bottom:4px}.new-login-toast .nl-meta{font-size:12px;color:var(--text-muted);margin-bottom:10px;display:flex;flex-wrap:wrap;gap:0 6px}.new-login-toast .nl-actions{display:flex;gap:8px;justify-content:flex-end}.new-login-toast .nl-actions button{padding:6px 14px;font-size:12px}@keyframes slideDown{0%{opacity:0;transform:translateY(-12px)}to{opacity:1;transform:translateY(0)}}@media(max-width:720px){.sidebar.collapsed{width:64px}.message{max-width:88%}.message-list{padding:14px 12px 8px}.sas-emoji-grid{grid-template-columns:repeat(4,1fr)}}@media(max-width:520px){.sidebar.mobile.open{display:flex;width:80vw;max-width:320px}.main-shell.mobile .sidebar.mobile.open{display:flex}}.message-list::-webkit-scrollbar,.room-list::-webkit-scrollbar,.modal section::-webkit-scrollbar,.drawer section::-webkit-scrollbar{width:6px;height:6px}.message-list::-webkit-scrollbar-thumb,.room-list::-webkit-scrollbar-thumb,.modal section::-webkit-scrollbar-thumb,.drawer section::-webkit-scrollbar-thumb{background:var(--surface-3);border-radius:4px}