:root{--brand-blue: #315097;--brand-blue-dark: #243c75;--brand-red: #a02122;--bg-app: #eef1f6;--bg-panel: #ffffff;--bg-chat: #f6f7fb;--text-main: #1e2a3a;--text-muted: #8893a1;--text-faint: #b7bfc9;--online: #34b97a;--away: #e8a33d;--offline: #c4cad2;--border: #e3e7ee;--radius-lg: 18px;--radius-md: 12px;--radius-sm: 8px}*{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;font-family:Inter,system-ui,sans-serif;background:var(--bg-app);color:var(--text-main);-webkit-font-smoothing:antialiased}button{font-family:inherit}.login-screen{min-height:100%;display:flex;align-items:center;justify-content:center;padding:24px;background:linear-gradient(180deg,#d7deea,#c9d3e4)}.login-card{background:var(--bg-panel);border-radius:var(--radius-lg);box-shadow:0 30px 60px -20px #283c6459,0 0 0 1px #283c640f;padding:36px 32px;width:100%;max-width:380px}.login-logo{width:48px;height:48px;position:relative;margin-bottom:18px}.login-logo span{position:absolute;border-radius:50%}.login-logo .c1{width:30px;height:30px;background:var(--brand-blue);top:0;left:0}.login-logo .c2{width:30px;height:30px;background:var(--brand-red);bottom:0;right:0;opacity:.92}.login-logo .c3{width:16px;height:16px;background:#fff;top:15px;left:15px;border:3px solid var(--brand-blue-dark)}.login-card h1{font-family:Space Grotesk,sans-serif;font-size:22px;margin:0 0 4px}.login-card p.subtitle{color:var(--text-muted);font-size:13px;margin:0 0 24px}.field-group{margin-bottom:16px}.field-group label{display:block;font-size:12.5px;font-weight:600;margin-bottom:6px;color:var(--text-main)}.field-group input{width:100%;padding:11px 14px;border-radius:var(--radius-sm);border:1px solid var(--border);background:var(--bg-app);font-size:14px;color:var(--text-main)}.field-group input:focus{outline:2px solid var(--brand-blue);outline-offset:1px;background:#fff}.btn-primary{width:100%;padding:12px 14px;border-radius:var(--radius-sm);border:none;background:var(--brand-blue);color:#fff;font-size:14px;font-weight:600;cursor:pointer;transition:background .15s ease}.btn-primary:hover{background:var(--brand-blue-dark)}.btn-primary:disabled{opacity:.6;cursor:default}.form-error{background:#fdecec;color:var(--brand-red);border:1px solid #f4c7c8;border-radius:var(--radius-sm);padding:10px 12px;font-size:12.5px;margin-bottom:16px}.app-shell{display:grid;grid-template-columns:300px 1fr;height:100vh}@media (max-width: 800px){.app-shell{grid-template-columns:1fr}}.sidebar{background:var(--bg-panel);border-right:1px solid var(--border);display:flex;flex-direction:column;min-width:0}@media (max-width: 800px){.sidebar{border-right:none}}.sidebar-head{padding:18px 20px 14px;display:flex;align-items:center;gap:12px;border-bottom:1px solid var(--border)}.logo-mark{width:30px;height:30px;position:relative;flex-shrink:0}.logo-mark span{position:absolute;border-radius:50%}.logo-mark .c1{width:18px;height:18px;background:var(--brand-blue);top:0;left:0}.logo-mark .c2{width:18px;height:18px;background:var(--brand-red);bottom:0;right:0;opacity:.92}.logo-mark .c3{width:10px;height:10px;background:#fff;top:9px;left:9px;border:2px solid var(--brand-blue-dark)}.sidebar-head .title{font-family:Space Grotesk,sans-serif;font-weight:700;font-size:15px;line-height:1.2;flex:1;min-width:0}.sidebar-head .title small{display:block;font-family:Inter,sans-serif;font-weight:500;font-size:11px;color:var(--text-muted);letter-spacing:.02em;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.logout-btn{border:none;background:var(--bg-app);color:var(--text-muted);width:32px;height:32px;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;flex-shrink:0}.logout-btn:hover{background:#fdecec;color:var(--brand-red)}.connection-banner{font-size:12px;text-align:center;padding:6px 12px;background:#fdecec;color:var(--brand-red)}.contact-list{flex:1;overflow-y:auto;padding:4px 8px 16px}.section-label{font-size:11px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--text-faint);padding:16px 12px 6px}.group-section-label{display:flex;align-items:center;justify-content:space-between;padding-right:8px}.empty-hint{font-size:12.5px;color:var(--text-muted);padding:8px 12px 16px;line-height:1.5}.contact{display:flex;align-items:center;gap:12px;padding:9px 12px;border-radius:var(--radius-sm);cursor:pointer}.contact:hover,.contact.active{background:var(--bg-app)}.contact.offline .contact-name,.contact.offline .avatar,.contact.offline .contact-sub{opacity:.45}.unread{background:var(--brand-red);color:#fff;font-size:11px;font-weight:700;min-width:20px;height:20px;border-radius:10px;display:flex;align-items:center;justify-content:center;padding:0 6px;flex-shrink:0}.avatar{width:36px;height:36px;border-radius:11px;color:#fff;display:flex;align-items:center;justify-content:center;font-size:13px;font-weight:700;position:relative;flex-shrink:0}.avatar.group{background:linear-gradient(135deg,#5c6b85,#3a4660)}.status-dot{position:absolute;width:10px;height:10px;border-radius:50%;border:2px solid #fff;bottom:-2px;right:-2px}.status-dot.online{background:var(--online)}.status-dot.away{background:var(--away)}.status-dot.offline{background:var(--offline)}.contact-meta{flex:1;min-width:0}.contact-name{font-size:13.5px;font-weight:600;color:var(--text-main)}.contact-sub{font-size:11.5px;color:var(--text-muted);margin-top:1px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.main-area{display:flex;flex-direction:column;min-width:0;height:100%;background:var(--bg-chat)}@media (max-width: 800px){.main-area{display:none}.app-shell.chat-active .main-area{display:flex}.app-shell.chat-active .sidebar{display:none}}.main-area-placeholder{flex:1;display:flex;align-items:center;justify-content:center;padding:40px;text-align:center}.main-area-inner{max-width:360px}.main-area-inner .logo-mark{width:56px;height:56px;margin:0 auto 18px}.main-area-inner .logo-mark .c1,.main-area-inner .logo-mark .c2{width:34px;height:34px}.main-area-inner .logo-mark .c3{width:18px;height:18px;top:17px;left:17px;border-width:3px}.main-area-inner h2{font-family:Space Grotesk,sans-serif;font-size:19px;margin:0 0 8px}.main-area-inner p{color:var(--text-muted);font-size:13.5px;line-height:1.6;margin:0}.badge-phase{display:inline-block;margin-top:18px;font-size:11px;letter-spacing:.08em;text-transform:uppercase;font-weight:700;color:var(--brand-blue-dark);background:var(--bg-app);border:1px solid var(--border);border-radius:20px;padding:6px 14px}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#1e2a3a73;display:flex;align-items:center;justify-content:center;padding:20px;z-index:50}.modal-card{background:var(--bg-panel);border-radius:var(--radius-lg);box-shadow:0 30px 60px -20px #283c6459;padding:24px;width:100%;max-width:420px;max-height:calc(100vh - 40px);overflow-y:auto}.modal-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:4px}.modal-head h2{font-family:Space Grotesk,sans-serif;font-size:18px;margin:0}.modal-close{border:none;background:var(--bg-app);color:var(--text-muted);width:30px;height:30px;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer}.modal-close:hover{background:#fdecec;color:var(--brand-red)}.modal-subtitle{color:var(--text-muted);font-size:13px;line-height:1.5;margin:4px 0 18px}.toggle-row{display:flex;align-items:center;justify-content:space-between;font-size:13.5px;font-weight:600;padding:10px 0;border-bottom:1px solid var(--border);margin-bottom:16px;cursor:pointer}.toggle-row input[type=checkbox]{width:18px;height:18px;accent-color:var(--brand-blue)}.sound-section.disabled{opacity:.45}.sound-section .field-group input[type=range]{width:100%;accent-color:var(--brand-blue)}.sound-list{display:flex;flex-direction:column;gap:4px;margin-top:14px}.sound-option{display:flex;align-items:center;gap:10px;padding:9px 10px;border-radius:var(--radius-sm);cursor:pointer;font-size:13px}.sound-option:hover{background:var(--bg-app)}.sound-option input[type=radio]{accent-color:var(--brand-blue);width:16px;height:16px;flex-shrink:0}.sound-label{flex:1}.preview-btn{border:1px solid var(--border);background:var(--bg-app);color:var(--brand-blue-dark);font-size:11.5px;font-weight:600;border-radius:20px;padding:5px 12px;cursor:pointer;flex-shrink:0}.preview-btn:hover{background:#fff;border-color:var(--brand-blue)}.preview-btn:disabled{cursor:default;opacity:.6}.modal-actions{display:flex;align-items:center;justify-content:flex-end;gap:12px;margin-top:22px}.modal-actions .btn-primary{width:auto;padding:10px 22px}.saved-hint{font-size:12.5px;color:var(--online);font-weight:600}.chat{display:flex;flex-direction:column;flex:1;min-height:0;background:var(--bg-chat);min-width:0}.chat-loading{display:flex;align-items:center;justify-content:center;height:100%;color:var(--text-muted);font-size:13.5px}.chat-head{height:64px;flex-shrink:0;background:var(--bg-panel);border-bottom:1px solid var(--border);display:flex;align-items:center;gap:12px;padding:0 20px}.back-btn{display:none;border:none;background:var(--bg-app);color:var(--text-muted);width:32px;height:32px;border-radius:50%;align-items:center;justify-content:center;cursor:pointer;flex-shrink:0}@media (max-width: 800px){.back-btn{display:flex}}.chat-head .contact-name{font-size:14.5px}.chat-head .contact-sub{font-size:12px}.messages{flex:1;padding:20px 24px;display:flex;flex-direction:column;gap:12px;overflow-y:auto}.load-more-btn{align-self:center;font-size:12px;font-weight:600;color:var(--brand-blue-dark);background:var(--bg-panel);border:1px solid var(--border);border-radius:20px;padding:6px 16px;cursor:pointer;margin-bottom:8px}.load-more-btn:disabled{opacity:.6;cursor:default}.day-divider{align-self:center;font-size:11px;color:var(--text-muted);background:var(--bg-panel);border:1px solid var(--border);border-radius:20px;padding:4px 14px;margin:6px 0 12px}.bubble-row{display:flex;gap:10px;max-width:78%}.bubble-row.out{align-self:flex-end;flex-direction:row-reverse}.msg-avatar{width:28px;height:28px;border-radius:9px;font-size:11px;flex-shrink:0;align-self:flex-end}.bubble{padding:10px 14px;border-radius:var(--radius-md);font-size:13.5px;line-height:1.5;white-space:pre-wrap;word-break:break-word;box-shadow:0 1px 2px #141e320a}.bubble-row.in .bubble{background:var(--bg-panel);border:1px solid var(--border);border-top-left-radius:4px}.bubble-row.out .bubble{background:var(--brand-blue);color:#fff;border-top-right-radius:4px}.bubble-time{font-size:10.5px;color:var(--text-faint);margin-top:4px}.bubble-row.out .bubble-time{text-align:right}.composer{flex-shrink:0;background:var(--bg-panel);border-top:1px solid var(--border);padding:12px 16px;display:flex;align-items:flex-end;gap:12px}.composer-input{flex:1;resize:none;border:1px solid var(--border);background:var(--bg-app);border-radius:18px;padding:10px 16px;font-size:13.5px;font-family:inherit;color:var(--text-main);max-height:120px;line-height:1.4}.composer-input:focus{outline:2px solid var(--brand-blue);outline-offset:1px;background:#fff}.send{width:38px;height:38px;border-radius:50%;background:var(--brand-blue);color:#fff;border:none;display:flex;align-items:center;justify-content:center;flex-shrink:0;cursor:pointer}.send:hover{background:var(--brand-blue-dark)}.send:disabled{opacity:.5;cursor:default}.composer-error{padding:6px 16px 10px;font-size:12px;color:var(--brand-red);background:var(--bg-panel)}.composer-error.upload-progress{color:var(--brand-blue-dark)}.composer .icon-btn{border:none;background:var(--bg-app);color:var(--text-muted);width:36px;height:36px;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;flex-shrink:0}.composer .icon-btn:hover{color:var(--brand-blue-dark)}.composer .icon-btn:disabled{opacity:.5;cursor:default}.msg-sender-name{font-size:11.5px;font-weight:700;color:var(--brand-blue-dark);margin:0 2px 3px}.image-attachment{display:inline-block;border-radius:var(--radius-md);overflow:hidden;border:1px solid var(--border);max-width:240px}.image-attachment img{display:block;width:100%;max-height:240px;object-fit:cover}.file-chip{display:flex;align-items:center;gap:10px;background:var(--bg-panel);border:1px solid var(--border);border-radius:var(--radius-md);padding:10px 14px;font-size:13px;text-decoration:none;color:var(--text-main);max-width:260px}.bubble-row.out .file-chip{background:#ffffff1f;border-color:#ffffff59;color:#fff}.file-chip .ico{width:34px;height:34px;border-radius:8px;background:var(--bg-app);color:var(--brand-blue);display:flex;align-items:center;justify-content:center;flex-shrink:0}.bubble-row.out .file-chip .ico{background:#ffffff2e;color:#fff}.file-chip-meta{display:flex;flex-direction:column;min-width:0}.file-chip-name{font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.file-chip-meta small{color:var(--text-muted);font-size:11px}.bubble-row.out .file-chip-meta small{color:#ffffffbf}.admin-page{max-width:720px;margin:0 auto;padding:32px 20px 60px}.admin-header{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;flex-wrap:wrap;margin-bottom:24px}.admin-header h1{font-family:Space Grotesk,sans-serif;font-size:22px;margin:0 0 4px}.admin-header p{color:var(--text-muted);font-size:13px;margin:0}.admin-header-actions{display:flex;gap:10px;align-items:center}.btn-secondary{display:inline-flex;align-items:center;justify-content:center;padding:9px 16px;border-radius:var(--radius-sm);border:1px solid var(--border);background:var(--bg-panel);color:var(--text-main);font-size:13px;font-weight:600;text-decoration:none;cursor:pointer}.btn-secondary:hover{background:var(--bg-app)}.btn-secondary:disabled{opacity:.5;cursor:default}.btn-secondary.btn-danger{color:var(--brand-red);border-color:#f4c7c8}.btn-secondary.btn-danger:hover{background:#fdecec}.admin-user-list{display:flex;flex-direction:column;gap:8px}.admin-user-row{display:flex;align-items:center;gap:14px;background:var(--bg-panel);border:1px solid var(--border);border-radius:var(--radius-md);padding:12px 14px}.admin-user-meta{flex:1;min-width:0}.admin-user-name{font-weight:700;font-size:14px;display:flex;align-items:center;gap:8px;flex-wrap:wrap}.admin-user-sub{color:var(--text-muted);font-size:12.5px;margin-top:2px}.admin-user-actions{display:flex;gap:8px;flex-shrink:0}.tag{font-size:10.5px;font-weight:700;letter-spacing:.04em;text-transform:uppercase;border-radius:12px;padding:2px 8px}.tag-admin{background:var(--bg-app);color:var(--brand-blue-dark)}.tag-inactive{background:#fdecec;color:var(--brand-red)}@media (max-width: 640px){.admin-user-row{flex-wrap:wrap}.admin-user-actions{width:100%;margin-top:8px}.admin-user-actions button{flex:1}}.member-list{max-height:240px;overflow-y:auto;border:1px solid var(--border);border-radius:var(--radius-sm);margin-top:4px}.member-option{display:flex;align-items:center;gap:10px;padding:8px 10px;cursor:pointer;font-size:13px;border-bottom:1px solid var(--border)}.member-option:last-child{border-bottom:none}.member-option:hover{background:var(--bg-app)}.member-option input[type=checkbox]{accent-color:var(--brand-blue);width:16px;height:16px;flex-shrink:0}.member-option .avatar{width:28px;height:28px;border-radius:9px;font-size:11px;flex-shrink:0}.member-name{flex:1;font-weight:600}.member-station{color:var(--text-muted);font-size:11.5px}.new-group-btn{border:none;background:var(--bg-app);color:var(--brand-blue-dark);width:24px;height:24px;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;margin-left:auto}.new-group-btn:hover{background:#fff;box-shadow:inset 0 0 0 1px var(--brand-blue)}