:root{--bg:#f5f7fb;--card:#fff;--text:#152033;--muted:#667085;--line:#e6eaf0;--blue:#1d72f3;--blue2:#eef5ff;--red:#d92d20;--green:#039855;--dark:#101828}*{box-sizing:border-box}body{margin:0;font-family:Tahoma,Arial,sans-serif;background:var(--bg);color:var(--text)}a{text-decoration:none;color:inherit}.layout{display:flex;min-height:100vh}.sidebar{width:245px;background:var(--dark);color:white;padding:22px 16px;position:sticky;top:0;height:100vh}.brand{font-size:20px;font-weight:700;margin-bottom:24px}.sidebar nav{display:grid;gap:8px}.sidebar a{padding:12px 14px;border-radius:12px;color:#e5e7eb}.sidebar a:hover{background:#1f2937}.content{flex:1;padding:24px;overflow:auto}.page-head{display:flex;justify-content:space-between;align-items:flex-start;gap:16px;margin-bottom:18px}.page-head h1{margin:0 0 6px;font-size:28px}.page-head p{margin:0;color:var(--muted)}form{margin:0}input,select,button{font:inherit;border:1px solid var(--line);border-radius:10px;padding:10px 12px;background:white}button{background:var(--blue);border-color:var(--blue);color:white;font-weight:700;cursor:pointer}button:hover{filter:brightness(.96)}.cards{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-bottom:18px}.card,.panel{background:var(--card);border:1px solid var(--line);border-radius:18px;box-shadow:0 8px 24px rgba(16,24,40,.05)}.card{padding:18px}.card span{display:block;color:var(--muted);font-size:14px}.card strong{display:block;margin-top:8px;font-size:26px}.panel{padding:18px;margin-bottom:18px}.panel h2{margin:0 0 14px;font-size:20px}table{width:100%;border-collapse:collapse;overflow:hidden}th,td{padding:12px;border-bottom:1px solid var(--line);text-align:left;vertical-align:middle}thead th{background:var(--blue2);font-weight:700}tbody tr:nth-child(even){background:#fbfdff}.right{text-align:right}.red{color:var(--red)!important}.green{color:var(--green)!important}.dot{display:inline-block;width:12px;height:12px;border-radius:999px;margin-right:8px;vertical-align:-1px}.grid-form{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;align-items:end}.grid-form label{display:grid;gap:6px;color:var(--muted);font-size:14px}.grid-form label input,.grid-form label select{color:var(--text)}.grid-form .wide{grid-column:span 2}.danger-link{color:var(--red);font-weight:700}.alert{padding:12px 14px;border-radius:12px;margin-bottom:14px}.alert.danger{background:#fff1f3;color:var(--red)}.alert.success{background:#ecfdf3;color:var(--green)}.mt{margin-top:14px}.login-page{min-height:100vh;display:grid;place-items:center;background:linear-gradient(135deg,#101828,#1d72f3)}.login-card{width:min(420px,92vw);background:white;padding:28px;border-radius:22px;box-shadow:0 24px 60px rgba(0,0,0,.25);display:grid;gap:12px}.login-card h1{margin:0}.login-card p{margin:0 0 8px;color:var(--muted)}.login-card small{color:var(--muted);line-height:1.5}@media(max-width:900px){.layout{display:block}.sidebar{position:relative;width:100%;height:auto}.sidebar nav{grid-template-columns:repeat(2,minmax(0,1fr))}.cards{grid-template-columns:1fr}.page-head{display:block}.page-head form{margin-top:12px}.grid-form{grid-template-columns:1fr}.grid-form .wide{grid-column:auto}.content{padding:14px}table{font-size:13px}}