:root{--bg:#f8f9fa;--card:#fff;--text:#212529;--primary:#0d6efd;}
[data-theme='dark']{--bg:#121212;--card:#1e1e1e;--text:#e9ecef;--primary:#6c63ff;}
[data-theme='blue']{--bg:#e9f2ff;--card:#ffffff;--text:#0b2a4a;--primary:#0d6efd;}
[data-theme='green']{--bg:#eef7ee;--card:#ffffff;--text:#08310a;--primary:#198754;}
body{background:var(--bg);color:var(--text);font-family:Inter,Segoe UI,system-ui;}
.navbar.bg-gradient-primary{background:linear-gradient(90deg,var(--primary),#6610f2);}
.card{background:var(--card);border-radius:10px;}
.btn-primary{background:var(--primary);border-color:var(--primary);}
.table thead{background:rgba(0,0,0,0.05);}