:root{
  --bg:#f7fbff;
  --card:#fff;
  --accent:#2563eb; /* blue */
  --accent-2:#06b6d4; /* teal */
  --muted:#6b7280;
  --danger:#ef4444;
  font-family: 'Poppins', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial;
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:#111}
.topbar{display:flex;justify-content:space-between;align-items:center;padding:12px 20px;background:linear-gradient(90deg,var(--card),#f1f7ff);box-shadow:0 2px 8px rgba(0,0,0,0.04)}
.brand{font-weight:700;color:var(--accent)}
.container{max-width:1000px;margin:28px auto;padding:16px}
.card{background:var(--card);padding:16px;border-radius:12px;box-shadow:0 6px 24px rgba(32,41,61,0.04)}
.centered-card{height:100vh;display:flex;align-items:center;justify-content:center}
.centered-card .card{width:360px;padding:28px;text-align:center}
input,select{display:block;width:100%;padding:10px;margin-top:6px;margin-bottom:12px;border-radius:8px;border:1px solid #e6eefb}
label{font-size:14px;color:var(--muted)}
.btn{background:var(--accent);color:white;padding:10px 14px;border-radius:8px;border:none;cursor:pointer}
.btn.outline{background:transparent;border:1px solid var(--accent);color:var(--accent)}
.btn.danger{background:var(--danger)}
.error{color:var(--danger);font-size:13px}
.controls{display:flex;justify-content:space-between;align-items:center;margin-bottom:18px}
table{width:100%;border-collapse:collapse}
th,td{padding:8px;border-bottom:1px solid #f1f5f9;text-align:left}
.total-row{font-weight:700;background:#fbfeff}
@media (max-width:700px){
  .controls{flex-direction:column;gap:12px}
  .centered-card .card{width:92%}
}
table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 20px;
}

table th, table td {
  border: 1px solid #ccc;
  padding: 10px;
  text-align: center;
}

table th {
  background: #3633d8;
}

button {
  padding: 5px 10px;
  margin: 0 2px;
  cursor: pointer;
}

.btn-logout {
  float: right;
  background: #e74c3c;
  color: white;
  border: none;
  border-radius: 5px;
}