:root{--bg: #f1f5f9;--surface: #ffffff;--surface-alt: #f8fafc;--border: #e2e8f0;--text: #0f172a;--muted: #64748b;--accent: #4f46e5;--accent-soft: #eef2ff;--danger: #b91c1c;--danger-soft: #fef2f2;--info-soft: #ecfdf5;--info: #047857;--nursing: #0d9488;--nursing-soft: #ccfbf1;--mbbs: #7c3aed;--mbbs-soft: #ede9fe;--radius: 12px;color-scheme:light}*{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased}h1,h2,p{margin:0}button,input,textarea{font:inherit}button{padding:8px 14px;border:1px solid var(--border);border-radius:8px;background:var(--surface);color:var(--text);cursor:pointer;white-space:nowrap;transition:background .15s,border-color .15s}button:hover:not(:disabled){border-color:#cbd5e1;background:var(--surface-alt)}button:disabled{opacity:.5;cursor:default}button:focus-visible,input:focus-visible,textarea:focus-visible{outline:2px solid var(--accent);outline-offset:2px}button.primary{background:var(--accent);border-color:var(--accent);color:#fff;font-weight:600}button.primary:hover:not(:disabled){background:#4338ca;border-color:#4338ca}button.ghost{background:transparent;border-color:transparent;color:var(--muted);font-weight:500}button.ghost:hover:not(:disabled){background:var(--border);color:var(--text)}button.ghost.danger{color:var(--danger)}button.ghost.danger:hover:not(:disabled){background:var(--danger-soft);color:var(--danger)}button.block{width:100%}label{display:flex;flex-direction:column;gap:6px;font-size:14px;font-weight:500;color:var(--muted)}input[type=email],input[type=password]{padding:10px 12px;border:1px solid var(--border);border-radius:8px;background:var(--surface);color:var(--text);font-size:15px}.muted{color:var(--muted);font-size:14px}.pad{padding:16px}.splash{display:grid;place-items:center;height:100%;color:var(--muted)}.signin{min-height:100%;display:grid;place-items:center;padding:24px}.signin-card{width:100%;max-width:380px;background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:32px 28px;display:flex;flex-direction:column;gap:16px;box-shadow:0 10px 30px #0f172a0f}.signin-card h1{font-size:22px}.signin-card .muted{margin-top:-8px}.brand{display:flex;align-items:center;gap:10px}.brand-home{padding:0;border:0;background:none;color:inherit;font:inherit;cursor:pointer}.brand-mark{width:32px;height:32px;border-radius:9px;background:linear-gradient(135deg,var(--accent),var(--mbbs));color:#fff;font-weight:700;font-size:13px;display:grid;place-items:center;flex-shrink:0}.signin-card .brand-mark{width:44px;height:44px;font-size:16px;border-radius:12px}.brand-text{font-weight:650;font-size:16px}.app{height:100%;display:flex;flex-direction:column}.topbar{height:60px;flex-shrink:0;display:flex;align-items:center;justify-content:space-between;gap:12px;padding:0 20px;background:var(--surface);border-bottom:1px solid var(--border)}.topbar-user{display:flex;align-items:center;gap:8px;min-width:0}.user-email{font-size:14px;color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:260px}.inbox{flex:1;min-height:0;display:grid;grid-template-columns:360px minmax(0,1fr)}.sidebar{background:var(--surface);border-right:1px solid var(--border);display:flex;flex-direction:column;min-height:0}.sidebar-head{padding:14px;display:flex;flex-direction:column;gap:12px;border-bottom:1px solid var(--border)}.segmented{display:grid;grid-template-columns:1fr 1fr;gap:4px;padding:4px;background:var(--bg);border-radius:10px}.segmented button{border:none;background:transparent;color:var(--muted);font-weight:500;padding:7px 10px}.segmented button:hover:not(:disabled){background:transparent;color:var(--text)}.segmented button.active{background:var(--surface);color:var(--text);font-weight:600;box-shadow:0 1px 2px #0f172a14}.count{display:inline-block;min-width:20px;margin-left:4px;padding:0 6px;border-radius:999px;background:var(--danger);color:#fff;font-size:12px;line-height:20px;text-align:center}.chips{display:flex;gap:6px;flex-wrap:wrap}.chip{padding:5px 12px;border-radius:999px;font-size:13px}.chip.active{background:var(--text);border-color:var(--text);color:#fff}.conv-list{list-style:none;margin:0;padding:6px;overflow-y:auto;flex:1}.conv{width:100%;display:flex;align-items:flex-start;gap:12px;text-align:left;padding:12px;border:1px solid transparent;border-radius:10px;background:transparent;white-space:normal}.conv:hover:not(:disabled){background:var(--surface-alt);border-color:transparent}.conv.selected,.conv.selected:hover:not(:disabled){background:var(--accent-soft);border-color:#c7d2fe}.conv-body{flex:1;min-width:0;display:flex;flex-direction:column;gap:4px}.conv-top{display:flex;justify-content:space-between;align-items:baseline;gap:8px}.conv-name{font-weight:600;font-size:14px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.conv time{font-size:12px;color:var(--muted);white-space:nowrap}.conv-preview{font-size:13px;color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.conv-email{font-size:12px;color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.you{color:var(--accent);font-weight:600}.conv-meta{display:flex;align-items:center;gap:8px;margin-top:2px}.unread-dot{font-size:12px;font-weight:600;color:var(--danger)}.avatar{width:40px;height:40px;border-radius:50%;display:grid;place-items:center;flex-shrink:0;font-size:13px;font-weight:700;color:#fff;background:var(--muted)}.avatar.nursing{background:var(--nursing)}.avatar.mbbs{background:var(--mbbs)}.project-badge{display:inline-block;padding:2px 8px;border-radius:6px;font-size:11px;font-weight:700;letter-spacing:.03em}.project-badge.nursing{background:var(--nursing-soft);color:#0f766e}.project-badge.mbbs{background:var(--mbbs-soft);color:#6d28d9}.thread-pane{min-width:0;min-height:0;display:flex;flex-direction:column;background:var(--bg)}.empty{flex:1;display:grid;place-items:center;color:var(--muted);padding:24px;text-align:center}.thread-header{display:flex;align-items:center;gap:12px;padding:12px 20px;background:var(--surface);border-bottom:1px solid var(--border)}.thread-title{flex:1;min-width:0;display:flex;align-items:center;gap:10px;flex-wrap:wrap}.thread-title h2{font-size:15px;font-weight:650}.thread-email{font-size:13px;color:var(--muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:100%}.icon-btn{display:none;width:36px;height:36px;padding:0;border:none;background:transparent;font-size:20px;line-height:1}.load-older{display:flex;justify-content:center}.messages{overflow-y:auto;padding:20px;display:flex;flex-direction:column;gap:10px}.bubble-row{display:flex}.bubble-row.mine{justify-content:flex-end}.bubble{max-width:min(480px,80%);padding:10px 14px;border-radius:14px;box-shadow:0 1px 2px #0f172a0d}.bubble.user{background:var(--surface);border:1px solid var(--border);border-bottom-left-radius:4px}.bubble.admin{background:var(--accent);color:#fff;border-bottom-right-radius:4px}.bubble p{white-space:pre-wrap;overflow-wrap:anywhere;line-height:1.45}.bubble time{display:block;margin-top:4px;font-size:11px;opacity:.7}.bubble-actions{display:flex;gap:12px;margin-top:4px}.bubble-actions button{background:none;border:none;padding:0;font-size:12px;color:inherit;opacity:.75;cursor:pointer}.bubble-actions button:hover:not(:disabled){opacity:1;text-decoration:underline}.bubble-edit{display:flex;flex-direction:column;gap:8px;min-width:min(320px,70vw)}.bubble-edit textarea{width:100%;box-sizing:border-box;padding:8px;font:inherit;color:#0f172a;background:#fff;border:1px solid var(--border);border-radius:8px;resize:vertical}.bubble-edit-actions{display:flex;justify-content:flex-end;gap:8px}.bubble-edit-actions button{padding:4px 12px;font-size:12px}.composer{flex-shrink:0;display:flex;flex-direction:column;gap:10px;padding:14px 20px;background:var(--surface);border-top:1px solid var(--border)}.composer textarea{width:100%;max-height:40vh;resize:none;padding:12px 14px;border:1px solid var(--border);border-radius:10px;background:var(--surface-alt);color:var(--text);font-size:15px;line-height:1.4}.composer-actions{display:flex;align-items:center;justify-content:space-between;gap:12px}.switch{flex-direction:row;align-items:center;gap:8px;font-size:14px;color:var(--muted);cursor:pointer}.switch input{width:16px;height:16px;accent-color:var(--accent);margin:0}.banners{display:flex;flex-direction:column;gap:8px;padding:0 20px}.banners:empty{display:none}.banner{margin:8px 0 0;padding:10px 14px;border-radius:8px;font-size:14px}.banner.error{background:var(--danger-soft);color:var(--danger)}.banner.info{background:var(--info-soft);color:var(--info)}.signin-card .banner{margin:0}@media(max-width:800px){.app{height:100dvh}.inbox{grid-template-columns:minmax(0,1fr);background:var(--surface)}.inbox[data-view=list] .thread-pane,.inbox[data-view=thread] .sidebar{display:none}.app:has(.inbox[data-view=thread]) .topbar{display:none}.topbar{height:auto;padding:12px 16px;padding-top:max(12px,env(safe-area-inset-top))}.user-email{display:none}.sidebar{border-right:none}.sidebar-head{padding:10px 12px;border-bottom:none}.chips{flex-wrap:nowrap;overflow-x:auto;scrollbar-width:none;margin:0 -12px;padding:0 12px}.chip{flex-shrink:0}.conv-list{padding:0}.conv{padding:12px 16px;gap:14px;border-radius:0;border-color:transparent;border-bottom:1px solid var(--border)}.conv.selected,.conv.selected:hover:not(:disabled){border-color:var(--border);border-bottom-color:var(--border)}.avatar{width:48px;height:48px}.icon-btn{display:inline-grid;place-items:center;flex-shrink:0}.thread-header{padding:8px 10px;padding-top:max(8px,env(safe-area-inset-top));gap:8px}.thread-header .avatar{width:38px;height:38px;font-size:12px}.thread-title h2{font-size:16px}.thread-header .ghost{padding:6px 10px;font-size:14px}.messages{padding:12px 10px;gap:4px;background:#efeae2}.bubble{max-width:82%;padding:7px 10px 5px;border-radius:10px;border:none}.bubble.user{background:#fff;border-bottom-left-radius:2px}.bubble.admin{background:#d9fdd3;color:var(--text);border-bottom-right-radius:2px}.bubble p{font-size:15px}.bubble time{text-align:right;font-size:10.5px;color:var(--muted);opacity:1}.composer{padding:8px 10px;padding-bottom:max(8px,env(safe-area-inset-bottom));gap:6px;background:var(--surface-alt);border-top:1px solid var(--border)}.composer textarea{font-size:16px;padding:10px 14px;border-radius:22px;background:#fff}.composer-actions{gap:8px}.switch{font-size:13px}.composer-actions button.primary{padding:8px 18px;border-radius:999px}.banners{padding:0 10px}.banners:not(:empty){padding-bottom:8px}}