:root{--bg:#f5f7fb;--card:#fff;--text:#152033;--muted:#667085;--brand:#0b6bcb;--ok:#12b76a;--warn:#f79009;--bad:#f04438;--line:#e4e7ec}*{box-sizing:border-box}body{margin:0;font-family:Inter,Arial,sans-serif;background:var(--bg);color:var(--text)}a{text-decoration:none;color:var(--brand)}.app{display:flex;min-height:100vh}.side{width:270px;background:#101828;color:white;padding:20px;position:sticky;top:0;height:100vh;overflow:auto}.brand{font-weight:800;font-size:20px;margin-bottom:18px}.side a{display:block;color:#d0d5dd;padding:10px 12px;border-radius:10px;margin:3px 0}.side a:hover,.side a.active{background:#1d2939;color:white}.main{flex:1;padding:24px}.top{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}.grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}.card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:18px;box-shadow:0 4px 18px rgba(16,24,40,.04)}.kpi{font-size:28px;font-weight:800}.muted{color:var(--muted)}table{width:100%;border-collapse:collapse;background:white;border-radius:14px;overflow:hidden}th,td{text-align:left;padding:12px;border-bottom:1px solid var(--line);vertical-align:top}th{background:#f9fafb;font-size:13px;color:#475467}.btn{display:inline-block;border:0;border-radius:10px;padding:10px 14px;background:var(--brand);color:white;cursor:pointer}.btn.gray{background:#667085}.btn.ok{background:var(--ok)}.btn.warn{background:var(--warn)}.btn.bad{background:var(--bad)}input,select,textarea{width:100%;padding:11px;border:1px solid #d0d5dd;border-radius:10px;background:white}label{font-size:13px;font-weight:700;margin:10px 0 5px;display:block}.formgrid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.pill{display:inline-block;padding:4px 9px;border-radius:999px;background:#eef4ff;color:#175cd3;font-size:12px}.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.alert{padding:12px;border-radius:12px;background:#ecfdf3;border:1px solid #abefc6}.login{max-width:430px;margin:8vh auto}.chatbox{height:320px;overflow:auto;background:#f9fafb;border:1px solid var(--line);padding:12px;border-radius:12px}.msg{padding:8px 11px;margin:6px 0;border-radius:10px;background:white}.msg.me{background:#e0f2fe}@media(max-width:900px){.app{display:block}.side{width:auto;height:auto;position:relative}.grid{grid-template-columns:1fr 1fr}.formgrid{grid-template-columns:1fr}}@media(max-width:560px){.grid{grid-template-columns:1fr}.main{padding:14px}}