body{background:#f5f6f8;color:#111827}.sidebar{width:260px;min-height:100vh;background:#111827;color:#fff}.sidebar a{display:block;color:#d1d5db;text-decoration:none;padding:10px 12px;border-radius:8px;margin-bottom:4px}.sidebar a:hover{background:#1f2937;color:#fff}.main{min-height:100vh}.card{border:0;border-radius:16px;box-shadow:0 10px 25px rgba(0,0,0,.05)}.btn-dark{border-radius:10px}.table{background:#fff}.form-control,.form-select{border-radius:10px}.auth-card{max-width:520px;margin:8vh auto;background:#fff;border-radius:24px;box-shadow:0 20px 45px rgba(0,0,0,.08);padding:36px}