:root{--blue:#2563eb;--ink:#172033;--muted:#6b7280;--line:#e5e7eb;--soft:#f6f8fc;--green:#168a50;--amber:#a35b00;--panel:#fff;--internal:#fff4cc}*{box-sizing:border-box}html,body{height:100%;margin:0;font:14px/1.4 Inter,system-ui,-apple-system,"Segoe UI",sans-serif;color:var(--ink);background:#fff}button,input,select,textarea{font:inherit}.app-shell{display:grid;grid-template-columns:220px 330px minmax(430px,1fr) 300px;height:100vh;overflow:hidden}.nav-panel,.thread-list-panel,.conversation-panel,.details-panel{min-width:0;border-right:1px solid var(--line);background:var(--panel)}.nav-panel{padding:18px 14px;background:#f8fafc}.brand-row{display:flex;gap:10px;align-items:center;margin-bottom:20px}.brand-row small{display:block;color:var(--muted)}.brand-mark,.avatar{display:grid;place-items:center;border-radius:50%;background:#dbeafe;color:#1d4ed8;font-weight:700}.brand-mark{width:38px;height:38px}.wide{width:100%}.primary{border:0;border-radius:7px;background:var(--blue);color:white;padding:9px 15px;font-weight:650;cursor:pointer}.primary:disabled{opacity:.45;cursor:not-allowed}.search{display:flex;align-items:center;gap:7px;margin:12px 0;padding:8px 10px;border:1px solid var(--line);border-radius:7px;background:#fff}.search input{width:100%;border:0;outline:0}.scope,.view{display:flex;justify-content:space-between;width:100%;padding:9px 10px;border:0;border-radius:6px;background:transparent;text-align:left;cursor:pointer}.scope.active,.view.active{background:#e8f0ff;color:#164dcc;font-weight:650}.view-title{margin:18px 8px 7px;color:var(--muted);font-size:12px;text-transform:uppercase}.count{border-radius:10px;background:#dbeafe;padding:0 7px}.panel-header,.conversation-header,.details-panel header{display:flex;align-items:center;justify-content:space-between;height:72px;padding:14px 16px;border-bottom:1px solid var(--line)}h1,h2{margin:0;font-size:18px}.panel-header small{color:var(--muted)}.icon{border:0;background:transparent;padding:7px;border-radius:6px;cursor:pointer;font-size:18px}.icon:hover{background:#eef2f7}.thread-list{height:calc(100vh - 72px);overflow:auto}.thread{display:grid;grid-template-columns:42px 1fr auto;gap:10px;padding:13px 12px;border-bottom:1px solid #edf0f4;cursor:pointer}.thread:hover,.thread.selected{background:#edf4ff}.thread .avatar{width:38px;height:38px}.thread-main{min-width:0}.thread-name-row{display:flex;gap:6px;align-items:center}.thread-name{font-weight:700;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.thread-preview{margin-top:4px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.thread-meta{text-align:right;color:var(--muted);font-size:12px}.badge{display:inline-block;margin-top:6px;min-width:20px;padding:2px 6px;border-radius:10px;background:var(--blue);color:#fff;text-align:center}.channel-dot{width:8px;height:8px;border-radius:50%;display:inline-block}.channel-dot.SMS,.channel-dot.MMS{background:#2563eb}.channel-dot.WhatsApp{background:#18a558}.conversation-panel{display:flex;flex-direction:column}.conversation-header{flex:none}.conversation-title{flex:1;margin-left:10px}.conversation-title div{color:var(--muted);margin-top:2px}.avatar{width:42px;height:42px}.header-actions{display:flex}.timeline{flex:1;overflow:auto;padding:20px;background:var(--soft)}.date-divider{text-align:center;color:var(--muted);font-size:12px;margin:14px}.message-row{display:flex;margin:8px 0}.message-row.outbound{justify-content:flex-end}.message{max-width:75%;padding:10px 12px;border-radius:12px;background:#fff;border:1px solid #e9edf3;box-shadow:0 1px 2px #00000008}.outbound .message{background:#e7efff;border-color:#d3e1ff}.message.internal{background:var(--internal);border-color:#f5dd8c}.message-meta{margin-top:5px;color:var(--muted);font-size:11px}.media-thumb{display:block;max-width:360px;max-height:280px;margin-top:8px;border-radius:7px}.composer{flex:none;margin:0 12px 12px;border:1px solid #cbd5e1;border-radius:8px;background:#fff;overflow:hidden;transition:.15s}.composer:focus-within{box-shadow:0 0 0 2px #dbeafe}.composer.disabled{opacity:.55;pointer-events:none}.composer-toolbar,.composer-footer{display:flex;align-items:center;gap:12px;justify-content:space-between;padding:9px 12px}.composer-toolbar{border-bottom:1px solid var(--line)}.composer-toolbar select{margin-left:5px}.composer textarea{display:block;width:100%;min-height:64px;max-height:220px;padding:12px;border:0;outline:0;resize:vertical}.composer-footer{color:var(--muted)}.composer-footer>div{display:flex;align-items:center;gap:8px}.right{margin-left:auto}.banner{padding:9px 12px;font-weight:600}.banner.open{background:#e9f9ef;color:#126b3d}.banner.closed{background:#fff4dc;color:#8a4c00}.hint{color:var(--green);font-size:12px}.template-area{padding:10px 12px;background:#effcf4;border-bottom:1px solid #ccebd8}.template-area label{display:flex;align-items:center;gap:8px}.template-area select{flex:1}.template-vars{display:grid;grid-template-columns:130px 1fr;gap:7px;margin-top:8px}.template-preview{margin-top:8px;padding:8px;border-radius:6px;background:white;color:#374151}.details-panel{overflow:auto}.details-body{padding:14px}.detail-card{padding:12px;border:1px solid var(--line);border-radius:8px;margin-bottom:12px}.detail-card h3{margin:0 0 10px}.detail-row{display:grid;grid-template-columns:90px 1fr;gap:8px;margin:8px 0}.detail-row label{color:var(--muted)}.detail-actions{display:grid;grid-template-columns:1fr 1fr;gap:8px}.detail-actions button{padding:8px;border:1px solid var(--line);border-radius:6px;background:#fff;cursor:pointer}.empty{padding:30px;text-align:center;color:var(--muted)}.hidden{display:none!important}dialog{width:min(620px,90vw);border:0;border-radius:12px;box-shadow:0 15px 50px #0003;padding:0}dialog::backdrop{background:#17203377}dialog form{padding:18px}dialog header,dialog footer{display:flex;align-items:center;justify-content:space-between}#newSearch{width:100%;padding:10px;border:1px solid var(--line);border-radius:7px}.search-results{max-height:340px;overflow:auto;margin:10px 0}.search-result{display:flex;justify-content:space-between;padding:10px;border-bottom:1px solid var(--line);cursor:pointer}.search-result:hover{background:#eef4ff}.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);padding:10px 16px;border-radius:7px;background:#172033;color:white;z-index:20}@media(max-width:1150px){.app-shell{grid-template-columns:190px 300px 1fr}.details-panel{position:fixed;right:0;top:0;bottom:0;width:310px;z-index:10;box-shadow:-6px 0 20px #0002}.details-panel.collapsed{display:none}}@media(max-width:820px){.app-shell{grid-template-columns:270px 1fr}.nav-panel{display:none}.details-panel{display:none}.thread-list-panel{display:none}.thread-list-panel.mobile-open{display:block;position:fixed;inset:0 30% 0 0;z-index:12}}