:root{--bg:#f5f7fb;--card:#fff;--text:#172033;--muted:#6b7280;--primary:#2563eb;--danger:#dc2626;--border:#e5e7eb}
*{box-sizing:border-box}body{margin:0;font-family:Arial,Tahoma,sans-serif;background:var(--bg);color:var(--text);direction:ltr}.layout{display:flex;min-height:100vh}.sidebar{width:245px;background:#111827;color:#fff;padding:20px;position:fixed;top:0;bottom:0}.sidebar h2{font-size:20px;margin:0 0 25px}.sidebar a{display:block;color:#d1d5db;text-decoration:none;padding:12px 10px;border-radius:10px;margin-bottom:6px}.sidebar a:hover,.sidebar a.active{background:#1f2937;color:#fff}.main{margin-left:245px;width:calc(100% - 245px);padding:24px}.topbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}.btn{background:var(--primary);color:#fff;border:0;border-radius:10px;padding:10px 14px;text-decoration:none;display:inline-block;cursor:pointer}.btn.gray{background:#6b7280}.btn.red{background:var(--danger)}.grid{display:grid;grid-template-columns:repeat(5,1fr);gap:14px}.card{background:var(--card);border:1px solid var(--border);border-radius:16px;padding:18px;box-shadow:0 8px 20px rgba(0,0,0,.04)}.stat .num{font-size:28px;font-weight:bold;margin-top:8px}.stat .label{color:var(--muted);font-size:14px}table{width:100%;border-collapse:collapse;background:#fff;border-radius:16px;overflow:hidden;border:1px solid var(--border)}th,td{padding:13px;border-bottom:1px solid var(--border);text-align:left;vertical-align:top}th{background:#f9fafb;color:#374151}.form{max-width:850px;background:#fff;padding:22px;border-radius:16px;border:1px solid var(--border)}label{display:block;margin:12px 0 6px;font-weight:bold}input,select,textarea{width:100%;padding:11px;border:1px solid var(--border);border-radius:10px}textarea{min-height:90px}.row{display:grid;grid-template-columns:1fr 1fr;gap:14px}.badge{padding:5px 8px;border-radius:999px;background:#eef2ff;color:#3730a3;font-size:12px;display:inline-block}.kanban{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.column{background:#eef2ff;border-radius:16px;padding:12px;min-height:200px}.column h3{font-size:15px;margin:5px 0 12px}.mini{font-size:13px;color:var(--muted)}.login{max-width:390px;margin:90px auto;background:#fff;padding:26px;border-radius:18px;border:1px solid var(--border);box-shadow:0 15px 40px rgba(0,0,0,.08)}.error{background:#fee2e2;color:#991b1b;padding:10px;border-radius:10px;margin-bottom:12px}@media(max-width:900px){.sidebar{position:static;width:100%;height:auto}.layout{display:block}.main{margin-left:0;width:100%}.grid,.kanban,.row{grid-template-columns:1fr}}