:root{--bg:#f8fafc;--surface:#ffffff;--border:#e2e8f0;--text:#0f172a;--muted:#64748b;--accent:#2563eb;--danger:#dc2626;--success:#047857}*{box-sizing:border-box}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--text)}a{color:var(--accent)}.container{max-width:1100px;margin:0 auto;padding:24px}.topbar{display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--border);padding:14px 24px}.card,.topbar{background:var(--surface)}.card{border:1px solid var(--border);border-radius:14px;padding:18px}.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));grid-gap:12px;gap:12px}.stat-value{font-size:26px;font-weight:700}.stat-label{color:var(--muted);font-size:13px;margin-top:2px}.input{border:1px solid var(--border);border-radius:8px;padding:9px 12px;font-size:14px;outline:none;width:100%}.input:focus{border-color:var(--accent)}.btn{border:1px solid var(--border);background:var(--surface);border-radius:8px;padding:7px 14px;font-size:14px;font-weight:600;cursor:pointer}.btn-primary{background:var(--accent);border-color:var(--accent);color:#fff}.btn-danger{color:var(--danger);border-color:#fecaca}.btn:disabled{opacity:.5}table{width:100%;border-collapse:collapse;font-size:14px}td,th{text-align:left;padding:10px 12px;border-bottom:1px solid var(--border)}th{color:var(--muted);text-transform:uppercase;letter-spacing:.04em}.badge,th{font-weight:600;font-size:12px}.badge{display:inline-block;padding:2px 8px;border-radius:999px}.badge-active{background:#ecfdf5;color:var(--success)}.badge-suspended{background:#fef2f2;color:var(--danger)}.muted{color:var(--muted)}.error{color:var(--danger);font-size:14px}.nav{display:flex;gap:16px;align-items:center}.nav a{font-weight:600;font-size:14px;text-decoration:none;color:var(--muted)}.nav a:hover{color:var(--accent)}.brand,.nav a.nav-active{color:var(--text)}.brand{font-weight:700;font-size:18px;margin-right:8px}.chart-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));grid-gap:16px;gap:16px}@media (max-width:720px){.chart-grid{grid-template-columns:1fr}}.filter-row{gap:12px;align-items:center;justify-content:space-between}.filter-row,.preset-group{display:flex;flex-wrap:wrap}.preset-group{gap:6px}.filter-dates{display:flex;flex-wrap:wrap;gap:10px;align-items:center}.tabs{display:flex;gap:4px;border-bottom:1px solid var(--border)}.tabs a{padding:10px 14px;font-weight:600;font-size:14px;text-decoration:none;color:var(--muted);border-bottom:2px solid transparent;margin-bottom:-1px}.tabs a:hover{color:var(--accent)}.tabs a.tab-active{color:var(--text);border-bottom-color:var(--accent)}.badge-open{background:#fffbeb;color:#b45309}.badge-resolved{background:#ecfdf5;color:var(--success)}.badge-closed{background:#f1f5f9;color:var(--muted)}.badge-replied{background:#eff6ff;color:var(--accent)}.dot{display:inline-block;width:8px;height:8px;border-radius:999px;background:var(--accent);margin-right:6px}.thread{display:flex;flex-direction:column;gap:12px}.bubble{max-width:80%;padding:10px 14px;border-radius:14px;font-size:14px;line-height:1.5;white-space:pre-wrap;word-break:break-word}.bubble-meta{font-size:12px;margin-bottom:4px;opacity:.7}.bubble-user{align-self:flex-start;background:#f1f5f9;color:var(--text)}.bubble-admin{align-self:flex-end;background:var(--accent);color:#fff}.bubble-admin a{color:#fff}.attachment-img{max-height:200px;border-radius:8px;margin-top:8px;display:block}.attachment-link{display:inline-block;margin-top:8px;text-decoration:underline}.textarea{border:1px solid var(--border);border-radius:8px;padding:10px 12px;font-size:14px;outline:none;width:100%;font-family:inherit;resize:vertical}.textarea:focus{border-color:var(--accent)}