:root{--bg: #f3efe8;--bg-elevated: #fffdf9;--ink: #1c1916;--muted: #6b645c;--line: #ddd4c8;--accent: #0f6b5c;--accent-soft: #d8efe9;--danger: #9b2c2c;--warn: #9a6700;--shadow: 0 18px 50px rgba(28, 25, 22, .08);--radius: 16px;font-family:DM Sans,system-ui,sans-serif;color:var(--ink);background:radial-gradient(circle at top left,rgba(15,107,92,.12),transparent 32%),linear-gradient(180deg,#f7f2ea,#efe7db)}*{box-sizing:border-box}html,body,#root{margin:0;min-height:100%}body{min-height:100vh}button,input,select,textarea{font:inherit}.app-shell{display:grid;grid-template-rows:auto 1fr;min-height:100vh}.topbar{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:1rem 1.25rem;border-bottom:1px solid var(--line);background:#fffdf9d9;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.brand{display:flex;flex-direction:column;gap:.15rem}.brand strong{font-family:Fraunces,Georgia,serif;font-size:1.25rem;font-weight:700}.brand span,.muted{color:var(--muted);font-size:.875rem}.topbar-actions{display:flex;gap:.5rem;flex-wrap:wrap}.btn{border:1px solid transparent;border-radius:999px;padding:.55rem 1rem;cursor:pointer;background:var(--ink);color:#fff;transition:transform .15s ease,opacity .15s ease}.btn:hover{transform:translateY(-1px)}.btn.secondary{background:transparent;border-color:var(--line);color:var(--ink)}.btn.ghost{background:var(--accent-soft);color:var(--accent)}.btn:disabled{opacity:.5;cursor:not-allowed;transform:none}.layout{display:grid;grid-template-columns:320px 1fr;min-height:0}.sidebar,.thread,.settings-panel{min-height:0}.sidebar{border-right:1px solid var(--line);background:#fffdf9b3;display:flex;flex-direction:column}.filters{display:flex;flex-direction:column;gap:.75rem;padding:1rem;border-bottom:1px solid var(--line)}.filters select,.composer textarea,.settings-panel input,.settings-panel select{width:100%;border:1px solid var(--line);border-radius:12px;padding:.7rem .85rem;background:var(--bg-elevated)}.conversation-list{overflow:auto;flex:1}.conversation-item{width:100%;text-align:left;border:0;border-bottom:1px solid var(--line);background:transparent;padding:.95rem 1rem;cursor:pointer}.conversation-item.active,.conversation-item:hover{background:#0f6b5c14}.conversation-item .row{display:flex;justify-content:space-between;gap:.5rem;margin-bottom:.35rem}.conversation-item .preview{color:var(--muted);font-size:.875rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.badge{display:inline-flex;align-items:center;justify-content:center;min-width:1.4rem;height:1.4rem;border-radius:999px;background:var(--accent);color:#fff;font-size:.75rem;padding:0 .35rem}.thread{display:grid;grid-template-rows:auto 1fr auto;background:var(--bg-elevated)}.thread-header{display:flex;justify-content:space-between;gap:1rem;align-items:flex-start;padding:1rem 1.25rem;border-bottom:1px solid var(--line)}.thread-header h2{margin:0;font-family:Fraunces,Georgia,serif;font-size:1.35rem}.thread-actions{display:flex;gap:.5rem;flex-wrap:wrap}.messages{overflow:auto;padding:1.25rem;display:flex;flex-direction:column;gap:.75rem}.bubble{max-width:min(70%,520px);padding:.85rem 1rem;border-radius:18px;line-height:1.45;box-shadow:var(--shadow)}.bubble.inbound{align-self:flex-start;background:#fff;border:1px solid var(--line)}.bubble.outbound{align-self:flex-end;background:var(--accent);color:#fff}.bubble time{display:block;margin-top:.4rem;opacity:.7;font-size:.75rem}.composer{display:grid;grid-template-columns:1fr auto;gap:.75rem;padding:1rem 1.25rem;border-top:1px solid var(--line);background:#fffdf9eb}.empty{display:grid;place-items:center;padding:2rem;color:var(--muted);text-align:center}.settings-panel{padding:1.25rem;overflow:auto}.settings-grid{display:grid;gap:1rem;max-width:760px}.card{background:var(--bg-elevated);border:1px solid var(--line);border-radius:var(--radius);padding:1.1rem;box-shadow:var(--shadow)}.card h3{margin:0 0 .35rem;font-family:Fraunces,Georgia,serif}.owner-list{display:grid;gap:.5rem;margin-top:.75rem}.owner-list label{display:flex;gap:.6rem;align-items:center;padding:.55rem .7rem;border:1px solid var(--line);border-radius:12px;background:#fff}.status-pills{display:flex;gap:.5rem;flex-wrap:wrap}.pill{border-radius:999px;padding:.35rem .7rem;font-size:.8rem;background:#eee7dc}.pill.ok{background:var(--accent-soft);color:var(--accent)}.pill.warn{background:#fff1c9;color:var(--warn)}.error{color:var(--danger);font-size:.875rem}@media(max-width:900px){.layout{grid-template-columns:1fr}.sidebar{max-height:40vh}}