:root {
  --bg: #f5f7fb;
  --card: #ffffff;
  --text: #1d2939;
  --muted: #667085;
  --primary: #1d4ed8;
  --border: #e5e7eb;
  --success: #16a34a;
  --danger: #dc2626;
  --warning: #d97706;
  --shadow: 0 8px 24px rgba(16,24,40,.08);
}
*{box-sizing:border-box} body{margin:0;font-family:Arial,Helvetica,sans-serif;background:var(--bg);color:var(--text)}
a{text-decoration:none;color:inherit}
.layout{display:flex;min-height:100vh}
.sidebar{width:250px;background:#000;color:#fff;padding:20px;position:sticky;top:0;height:100vh}
.brand{font-weight:700;font-size:22px;margin-bottom:24px}
.sidebar nav{display:flex;flex-direction:column;gap:8px}
.sidebar nav a{padding:12px 14px;border-radius:10px;color:#d0d5dd}
.sidebar nav a:hover{background:rgba(255,255,255,.08);color:#fff}
.main{flex:1;padding:24px}
.topbar{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}
.cards{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-bottom:18px}
.card{background:var(--card);padding:18px;border-radius:16px;box-shadow:var(--shadow);border:1px solid var(--border)}
.metric{font-size:28px;font-weight:700;margin-top:8px}
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.table-wrap{overflow:auto;background:var(--card);padding:12px;border-radius:16px;box-shadow:var(--shadow);border:1px solid var(--border)}
table{width:100%;border-collapse:collapse}
th,td{padding:12px;border-bottom:1px solid var(--border);text-align:left;font-size:14px;vertical-align:top}
th{background:#f8fafc}
.form-card{background:var(--card);padding:18px;border-radius:16px;box-shadow:var(--shadow);border:1px solid var(--border);margin-bottom:18px}
.form-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}
.form-grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:14px}
input,select,textarea,button{width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:10px;font:inherit}
textarea{min-height:100px;resize:vertical}
button,.btn{background:var(--primary);color:#fff;border:none;cursor:pointer;display:inline-block;width:auto;padding:10px 16px}
.btn.secondary{background:#475467}
.btn.success{background:var(--success)}
.btn.warning{background:var(--warning)}
.btn.danger{background:var(--danger)}
.actions{display:flex;gap:8px;flex-wrap:wrap}
.badge{display:inline-block;padding:6px 10px;border-radius:999px;font-size:12px;font-weight:700;background:#eef2ff;color:#3730a3}
.badge.green{background:#ecfdf3;color:#166534}.badge.red{background:#fef2f2;color:#991b1b}.badge.orange{background:#fff7ed;color:#9a3412}
.filters{display:grid;grid-template-columns:2fr 1fr 1fr 1fr auto;gap:12px;align-items:end}
.pagination{display:flex;gap:8px;margin-top:12px;flex-wrap:wrap}
.pagination a{padding:8px 12px;background:#fff;border:1px solid var(--border);border-radius:10px}
.alert{padding:12px 14px;border-radius:12px;margin-bottom:18px}.alert.success{background:#ecfdf3;color:#166534}.alert.error{background:#fef2f2;color:#991b1b}
.login-page{display:flex;align-items:center;justify-content:center;min-height:100vh;padding:20px}
.login-box{max-width:420px;width:100%;background:#fff;padding:28px;border-radius:20px;box-shadow:var(--shadow);border:1px solid var(--border)}
.small{font-size:12px;color:var(--muted)}
@media (max-width: 1100px){.cards,.form-grid,.filters{grid-template-columns:repeat(2,1fr)}.grid-2{grid-template-columns:1fr}.sidebar{width:220px}}
@media (max-width: 760px){.layout{display:block}.sidebar{width:100%;height:auto;position:relative}.main{padding:16px}.cards,.form-grid,.form-grid-2,.filters{grid-template-columns:1fr}.topbar{display:block}.actions{flex-direction:column}}