:root{
  --bg:#f5f7fa;
  --text:#1a202c;
  --card-bg:#ffffff;
  --nav-bg:#0d6efd;
  --nav-text:#ffffff;
  --muted:#718096;
  --input-bg:#f7fafc;
  --input-border:#e2e8f0;
  --focus-color:#0d6efd;
  --error-color:#dc3545;
  --table-hover:#f0f4f8;
}
[data-theme="dark"]{
  --bg:#0f172a;
  --text:#e2e8f0;
  --card-bg:#1a202c;
  --nav-bg:#0b5ed7;
  --nav-text:#e2e8f0;
  --muted:#a0aec0;
  --input-bg:#2d3748;
  --input-border:#4a5568;
  --focus-color:#4c9aff;
  --error-color:#f56565;
  --table-hover:#2d3748;
}
*{box-sizing:border-box;}
html,body{height:100%;margin:0;padding:0;}
body{background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;transition:background-color 0.3s,color 0.3s;}
.navbar{background-color:var(--nav-bg)!important;color:var(--nav-text)!important;}
.navbar-brand{color:var(--nav-text)!important;font-weight:600;}
.btn-light{background-color:#ffffff;color:#000;border:1px solid #dee2e6;}
.btn-light:hover{background-color:#f8f9fa;}
[data-theme="dark"] .btn-light{background-color:#4a5568;color:#e2e8f0;border:1px solid #718096;}
[data-theme="dark"] .btn-light:hover{background-color:#5a6b7a;}
.btn-danger{background-color:#dc3545;border-color:#dc3545;}
.btn-danger:hover{background-color:#c82333;}
.card{background:var(--card-bg);color:var(--text);border:1px solid var(--input-border);box-shadow:0 2px 8px rgba(0,0,0,0.08);}
.card:hover{box-shadow:0 4px 12px rgba(0,0,0,0.12);transition:box-shadow 0.3s;}
.form-control{background:var(--input-bg);border:1px solid var(--input-border);color:var(--text);transition:border-color 0.2s;}
.form-control:focus{background:var(--input-bg);border-color:var(--focus-color);color:var(--text);box-shadow:0 0 0 3px rgba(13,110,253,0.1);}
.form-control::placeholder{color:var(--muted);}
.btn-primary{background:var(--focus-color);border:none;transition:background-color 0.2s;}
.btn-primary:hover{background:linear-gradient(135deg, var(--focus-color) 0%, #0a58ca 100%);}
.btn-success{background-color:#198754;border-color:#198754;}
.btn-success:hover{background-color:#157347;}
.table{color:var(--text);border-collapse:collapse;background:var(--card-bg)!important;}
.table thead th{background:var(--card-bg)!important;border-bottom:2px solid var(--input-border);color:var(--text)!important;font-weight:600;padding:12px;}
.table tbody td{border-bottom:1px solid var(--input-border);padding:12px;color:var(--text)!important;background:var(--card-bg)!important;}
.table tbody tr{background:var(--card-bg)!important;transition:background-color 0.2s;}
.table-striped>tbody>tr:nth-of-type(odd){background:var(--table-hover)!important;}
.table-striped>tbody>tr:hover{background:rgba(13,110,253,0.12)!important;}
[data-theme="dark"] .table-striped>tbody>tr:nth-of-type(odd){background:#2d3748!important;}
[data-theme="dark"] .table-striped>tbody>tr:hover{background:rgba(76,154,255,0.15)!important;}
[data-theme="dark"] .table{background:#1a202c!important;}
[data-theme="dark"] .table thead th{background:#1a202c!important;color:#e2e8f0!important;}
[data-theme="dark"] .table tbody td{background:#1a202c!important;color:#e2e8f0!important;border-bottom-color:#4a5568!important;}
[data-theme="dark"] .table tbody tr{background:#1a202c!important;}
pre{background:transparent;color:var(--text);}